-/* tc-m68k.c All the m68020 specific stuff in one convenient, huge,
- slow to compile, easy to find file.
-
- Copyright (C) 1987, 1991, 1992 Free Software Foundation, Inc.
+/* tc-m68k.c -- Assemble for the m68k family
+ Copyright (C) 1987, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
#include <ctype.h>
-#define NO_RELOC 0
#include "as.h"
-#include "read.h"
-
#include "obstack.h"
+#include "subsegs.h"
-/* note that this file includes real declarations and thus can only be included by one source file per executable. */
#include "opcode/m68k.h"
-
-#ifdef TE_SUN
-/* This variable contains the value to write out at the beginning of
- the a.out file. The 2<<16 means that this is a 68020 file instead
- of an old-style 68000 file */
-
-long omagic = 2<<16|OMAGIC; /* Magic byte for header file */
-#else
-long omagic = OMAGIC;
-#endif
+#include "m68k-parse.h"
/* This array holds the chars that always start a comment. If the
pre-processor is disabled, these aren't very useful */
+#if (defined (OBJ_ELF) && ! defined (TE_PSOS) && ! defined (TE_LINUX)) || defined (TE_DELTA)
+const char comment_chars[] = "|#";
+#else
const char comment_chars[] = "|";
+#endif
/* This array holds the chars that only start a comment at the beginning of
a line. If the line seems to have the form '# 123 filename'
/* Also note that comments like this one will always work. */
const char line_comment_chars[] = "#";
+const char line_separator_chars[] = "";
+
/* Chars that can be used to separate mant from exp in floating point nums */
-const char EXP_CHARS[] = "eE";
+CONST char EXP_CHARS[] = "eE";
-/* Chars that mean this number is a floating point constant */
-/* As in 0f12.456 */
-/* or 0d1.2345e12 */
+/* Chars that mean this number is a floating point constant, as
+ in "0f12.456" or "0d1.2345e12". */
-const char FLT_CHARS[] = "rRsSfFdDxXeEpP";
+CONST char FLT_CHARS[] = "rRsSfFdDxXeEpP";
/* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
changed in read.c . Ideally it shouldn't have to know about it at all,
- but nothing is ideal around here.
- */
+ but nothing is ideal around here. */
+
+const int md_reloc_size = 8; /* Size of relocation record */
+
+/* Are we trying to generate PIC code? If so, absolute references
+ ought to be made into linkage table references or pc-relative
+ references. Not implemented. For ELF there are other means
+ to denote pic relocations. */
+int flag_want_pic;
+
+static int flag_short_refs; /* -l option */
+static int flag_long_jumps; /* -S option */
+
+#ifdef REGISTER_PREFIX_OPTIONAL
+int flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
+#else
+int flag_reg_prefix_optional;
+#endif
-int md_reloc_size = 8; /* Size of relocation record */
+/* Whether --register-prefix-optional was used on the command line. */
+static int reg_prefix_optional_seen;
+
+/* The floating point coprocessor to use by default. */
+static enum m68k_register m68k_float_copnum = COP1;
+
+/* If this is non-zero, then references to number(%pc) will be taken
+ to refer to number, rather than to %pc + number. */
+static int m68k_abspcadd;
+
+/* If this is non-zero, then the quick forms of the move, add, and sub
+ instructions are used when possible. */
+static int m68k_quick = 1;
+
+/* If this is non-zero, then if the size is not specified for a base
+ or outer displacement, the assembler assumes that the size should
+ be 32 bits. */
+static int m68k_rel32 = 1;
/* Its an arbitrary name: This means I don't approve of it */
/* See flames below */
#define LONG 2
#define SZ_UNDEF 3
#undef BRANCH
+/* Case `g' except when BCC68000 is applicable. */
#define ABRANCH 1
+/* Coprocessor branches. */
#define FBRANCH 2
+/* Mode 7.2 -- program counter indirect with (16-bit) displacement,
+ supported on all cpus. Widens to 32-bit absolute. */
#define PCREL 3
+/* For inserting an extra jmp instruction with long offset on 68000,
+ for expanding conditional branches. (Not bsr or bra.) Since the
+ 68000 doesn't support 32-bit displacements for conditional
+ branches, we fake it by reversing the condition and branching
+ around a jmp with an absolute long operand. */
#define BCC68000 4
+/* For the DBcc "instructions". If the displacement requires 32 bits,
+ the branch-around-a-jump game is played here too. */
#define DBCC 5
+/* Not currently used? */
#define PCLEA 6
+/* Mode AINDX (apc-relative) using PC, with variable target, might fit
+ in 16 or 8 bits. */
+#define PCINDEX 7
-/* Operands we can parse: (And associated modes)
-
- numb: 8 bit num
- numw: 16 bit num
- numl: 32 bit num
- dreg: data reg 0-7
- reg: address or data register
- areg: address register
- apc: address register, PC, ZPC or empty string
- num: 16 or 32 bit num
- num2: like num
- sz: w or l if omitted, l assumed
- scale: 1 2 4 or 8 if omitted, 1 assumed
-
- 7.4 IMMED #num --> NUM
- 0.? DREG dreg --> dreg
- 1.? AREG areg --> areg
- 2.? AINDR areg@ --> *(areg)
- 3.? AINC areg@+ --> *(areg++)
- 4.? ADEC areg@- --> *(--areg)
- 5.? AOFF apc@(numw) --> *(apc+numw) -- empty string and ZPC not allowed here
- 6.? AINDX apc@(num,reg:sz:scale) --> *(apc+num+reg*scale)
- 6.? AINDX apc@(reg:sz:scale) --> same, with num=0
- 6.? APODX apc@(num)@(num2,reg:sz:scale) --> *(*(apc+num)+num2+reg*scale)
- 6.? APODX apc@(num)@(reg:sz:scale) --> same, with num2=0
- 6.? AMIND apc@(num)@(num2) --> *(*(apc+num)+num2) (previous mode without an index reg)
- 6.? APRDX apc@(num,reg:sz:scale)@(num2) --> *(*(apc+num+reg*scale)+num2)
- 6.? APRDX apc@(reg:sz:scale)@(num2) --> same, with num=0
- 7.0 ABSL num:sz --> *(num)
- num --> *(num) (sz L assumed)
- *** MSCR otherreg --> Magic
- With -l option
- 5.? AOFF apc@(num) --> *(apc+num) -- empty string and ZPC not allowed here still
- ?.? DINDR dreg@ --> (dreg) -- cas2 only
-
- examples:
- #foo #0x35 #12
- d2
- a4
- a3@
- a5@+
- a6@-
- a2@(12) pc@(14)
- a1@(5,d2:w:1) @(45,d6:l:4)
- pc@(a2) @(d4)
- etc . . .
-
-
- #name@(numw) -->turn into PC rel mode
- apc@(num8,reg:sz:scale) --> *(apc+num8+reg*scale)
+struct m68k_incant
+ {
+ const char *m_operands;
+ unsigned long m_opcode;
+ short m_opnum;
+ short m_codenum;
+ int m_arch;
+ struct m68k_incant *m_next;
+ };
- */
+#define getone(x) ((((x)->m_opcode)>>16)&0xffff)
+#define gettwo(x) (((x)->m_opcode)&0xffff)
-enum operand_type {
- IMMED = 1,
- DREG,
- AREG,
- AINDR,
- ADEC,
- AINC,
- AOFF,
- AINDX,
- APODX,
- AMIND,
- APRDX,
- ABSL,
- MSCR,
- REGLST,
- DINDR
+static const enum m68k_register m68000_control_regs[] = { 0 };
+static const enum m68k_register m68010_control_regs[] = {
+ SFC, DFC, USP, VBR,
+ 0
};
-
-
-struct m68k_exp {
- char *e_beg;
- char *e_end;
- expressionS e_exp;
- short e_siz; /* 0== default 1==short/byte 2==word 3==long */
+static const enum m68k_register m68020_control_regs[] = {
+ SFC, DFC, USP, VBR, CACR, CAAR, MSP, ISP,
+ 0
};
-
-/* DATA and ADDR have to be contiguous, so that reg-DATA gives 0-7==data reg,
- 8-15==addr reg for operands that take both types */
-
-enum _register {
- DATA = 1, /* 1- 8 == data registers 0-7 */
- DATA0 = DATA,
- DATA1,
- DATA2,
- DATA3,
- DATA4,
- DATA5,
- DATA6,
- DATA7,
-
- ADDR,
- ADDR0 = ADDR,
- ADDR1,
- ADDR2,
- ADDR3,
- ADDR4,
- ADDR5,
- ADDR6,
- ADDR7,
-
- /* Note that COPNUM==processor #1 -- COPNUM+7==#8, which stores as 000 */
- /* I think. . . */
-
- SP = ADDR7,
-
- FPREG, /* Eight FP registers */
- FP0 = FPREG,
- FP1,
- FP2,
- FP3,
- FP4,
- FP5,
- FP6,
- FP7,
- COPNUM = (FPREG+8), /* Co-processor #1-#8 */
- COP0 = COPNUM,
- COP1,
- COP2,
- COP3,
- COP4,
- COP5,
- COP6,
- COP7,
- PC, /* Program counter */
- ZPC, /* Hack for Program space, but 0 addressing */
- SR, /* Status Reg */
- CCR, /* Condition code Reg */
-
- /* These have to be in order for the movec instruction to work. */
- USP, /* User Stack Pointer */
- ISP, /* Interrupt stack pointer */
- SFC,
- DFC,
- CACR,
- VBR,
- CAAR,
- MSP,
- ITT0,
- ITT1,
- DTT0,
- DTT1,
- MMUSR,
- TC,
- SRP,
- URP,
- /* end of movec ordering constraints */
-
- FPI,
- FPS,
- FPC,
-
- DRP, /* 68851 or 68030 MMU regs */
- CRP,
- CAL,
- VAL,
- SCC,
- AC,
- BAD,
- BAD0 = BAD,
- BAD1,
- BAD2,
- BAD3,
- BAD4,
- BAD5,
- BAD6,
- BAD7,
- BAC,
- BAC0 = BAC,
- BAC1,
- BAC2,
- BAC3,
- BAC4,
- BAC5,
- BAC6,
- BAC7,
- PSR, /* aka MMUSR on 68030 (but not MMUSR on 68040)
- and ACUSR on 68ec030 */
- PCSR,
-
- IC, /* instruction cache token */
- DC, /* data cache token */
- NC, /* no cache token */
- BC, /* both caches token */
-
- TT0, /* 68030 access control unit regs */
- TT1,
+static const enum m68k_register m68040_control_regs[] = {
+ SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1,
+ USP, VBR, MSP, ISP, MMUSR, URP, SRP,
+ 0
};
-
-/* Internal form of an operand. */
-struct m68k_op {
- char *error; /* Couldn't parse it */
- enum operand_type mode; /* What mode this instruction is in. */
- enum _register reg; /* Base register */
- struct m68k_exp *con1;
- int ireg; /* Index register */
- int isiz; /* 0==unspec 1==byte(?) 2==short 3==long */
- int imul; /* Multipy ireg by this (1,2,4,or 8) */
- struct m68k_exp *con2;
+static const enum m68k_register m68060_control_regs[] = {
+ SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1, BUSCR,
+ USP, VBR, URP, SRP, PCR,
+ 0
};
+#define cpu32_control_regs m68010_control_regs
+
+static const enum m68k_register *control_regs;
/* internal form of a 68020 instruction */
-struct m68k_it {
- char *error;
- char *args; /* list of opcode info */
- int numargs;
-
- int numo; /* Number of shorts in opcode */
- short opcode[11];
-
- struct m68k_op operands[6];
-
- int nexp; /* number of exprs in use */
- struct m68k_exp exprs[4];
-
- int nfrag; /* Number of frags we have to produce */
- struct {
- int fragoff; /* Where in the current opcode[] the frag ends */
- symbolS *fadd;
- long foff;
- int fragty;
- } fragb[4];
-
- int nrel; /* Num of reloc strucs in use */
- struct {
- int n;
- symbolS *add,
- *sub;
- long off;
- char wid;
- char pcrel;
- } reloc[5]; /* Five is enough??? */
+struct m68k_it
+{
+ const char *error;
+ const char *args; /* list of opcode info */
+ int numargs;
+
+ int numo; /* Number of shorts in opcode */
+ short opcode[11];
+
+ struct m68k_op operands[6];
+
+ int nexp; /* number of exprs in use */
+ struct m68k_exp exprs[4];
+
+ int nfrag; /* Number of frags we have to produce */
+ struct
+ {
+ int fragoff; /* Where in the current opcode the frag ends */
+ symbolS *fadd;
+ long foff;
+ int fragty;
+ }
+ fragb[4];
+
+ int nrel; /* Num of reloc strucs in use */
+ struct
+ {
+ int n;
+ expressionS exp;
+ char wid;
+ char pcrel;
+ /* In a pc relative address the difference between the address
+ of the offset and the address that the offset is relative
+ to. This depends on the addressing mode. Basically this
+ is the value to put in the offset field to address the
+ first byte of the offset, without regarding the special
+ significance of some values (in the branch instruction, for
+ example). */
+ int pcrel_fix;
+#ifdef OBJ_ELF
+ /* Whether this expression needs special pic relocation, and if
+ so, which. */
+ enum pic_relocation pic_reloc;
+#endif
+ }
+ reloc[5]; /* Five is enough??? */
};
#define cpu_of_arch(x) ((x) & m68000up)
#define float_of_arch(x) ((x) & mfloat)
#define mmu_of_arch(x) ((x) & mmmu)
-static struct m68k_it the_ins; /* the instruction being assembled */
+static struct m68k_it the_ins; /* the instruction being assembled */
+
+#define op(ex) ((ex)->exp.X_op)
+#define adds(ex) ((ex)->exp.X_add_symbol)
+#define subs(ex) ((ex)->exp.X_op_symbol)
+#define offs(ex) ((ex)->exp.X_add_number)
/* Macros for adding things to the m68k_it struct */
#define addword(w) the_ins.opcode[the_ins.numo++]=(w)
/* Like addword, but goes BEFORE general operands */
-#define insop(w) {int z;\
- for(z=the_ins.numo;z>opcode->m_codenum;--z)\
- the_ins.opcode[z]=the_ins.opcode[z-1];\
- for(z=0;z<the_ins.nrel;z++)\
- the_ins.reloc[z].n+=2;\
- the_ins.opcode[opcode->m_codenum]=w;\
- the_ins.numo++;\
- }
-
-
-#define add_exp(beg,end) (\
- the_ins.exprs[the_ins.nexp].e_beg=beg,\
- the_ins.exprs[the_ins.nexp].e_end=end,\
- &the_ins.exprs[the_ins.nexp++]\
- )
-
-
-/* The numo+1 kludge is so we can hit the low order byte of the prev word. Blecch*/
-#define add_fix(width,exp,pc_rel) {\
- the_ins.reloc[the_ins.nrel].n= ((width)=='B') ? (the_ins.numo*2-1) : \
- (((width)=='b') ? ((the_ins.numo-1)*2) : (the_ins.numo*2));\
- the_ins.reloc[the_ins.nrel].add=adds((exp));\
- the_ins.reloc[the_ins.nrel].sub=subs((exp));\
- the_ins.reloc[the_ins.nrel].off=offs((exp));\
- the_ins.reloc[the_ins.nrel].wid=width;\
- the_ins.reloc[the_ins.nrel++].pcrel=pc_rel;\
- }
-
-#define add_frag(add,off,type) {\
- the_ins.fragb[the_ins.nfrag].fragoff=the_ins.numo;\
- the_ins.fragb[the_ins.nfrag].fadd=add;\
- the_ins.fragb[the_ins.nfrag].foff=off;\
- the_ins.fragb[the_ins.nfrag++].fragty=type;\
- }
-
-#define isvar(exp) ((exp) && (adds(exp) || subs(exp)))
-
-#define seg(exp) ((exp)->e_exp.X_seg)
-#define adds(exp) ((exp)->e_exp.X_add_symbol)
-#define subs(exp) ((exp)->e_exp.X_subtract_symbol)
-#define offs(exp) ((exp)->e_exp.X_add_number)
-
-
-struct m68k_incant {
- char *m_operands;
- unsigned long m_opcode;
- short m_opnum;
- short m_codenum;
- enum m68k_architecture m_arch;
- struct m68k_incant *m_next;
-};
+static void
+insop (w, opcode)
+ int w;
+ struct m68k_incant *opcode;
+{
+ int z;
+ for(z=the_ins.numo;z>opcode->m_codenum;--z)
+ the_ins.opcode[z]=the_ins.opcode[z-1];
+ for(z=0;z<the_ins.nrel;z++)
+ the_ins.reloc[z].n+=2;
+ for (z = 0; z < the_ins.nfrag; z++)
+ the_ins.fragb[z].fragoff++;
+ the_ins.opcode[opcode->m_codenum]=w;
+ the_ins.numo++;
+}
+/* The numo+1 kludge is so we can hit the low order byte of the prev word.
+ Blecch. */
+static void
+add_fix (width, exp, pc_rel, pc_fix)
+ char width;
+ struct m68k_exp *exp;
+ int pc_rel;
+ int pc_fix;
+{
+ the_ins.reloc[the_ins.nrel].n = (((width)=='B')
+ ? (the_ins.numo*2-1)
+ : (((width)=='b')
+ ? (the_ins.numo*2+1)
+ : (the_ins.numo*2)));
+ the_ins.reloc[the_ins.nrel].exp = exp->exp;
+ the_ins.reloc[the_ins.nrel].wid = width;
+ the_ins.reloc[the_ins.nrel].pcrel_fix = pc_fix;
+#ifdef OBJ_ELF
+ the_ins.reloc[the_ins.nrel].pic_reloc = exp->pic_reloc;
+#endif
+ the_ins.reloc[the_ins.nrel++].pcrel = pc_rel;
+}
+/* Cause an extra frag to be generated here, inserting up to 10 bytes
+ (that value is chosen in the frag_var call in md_assemble). TYPE
+ is the subtype of the frag to be generated; its primary type is
+ rs_machine_dependent.
+
+ The TYPE parameter is also used by md_convert_frag_1 and
+ md_estimate_size_before_relax. The appropriate type of fixup will
+ be emitted by md_convert_frag_1.
+
+ ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
+static void
+add_frag(add,off,type)
+ symbolS *add;
+ long off;
+ int type;
+{
+ the_ins.fragb[the_ins.nfrag].fragoff=the_ins.numo;
+ the_ins.fragb[the_ins.nfrag].fadd=add;
+ the_ins.fragb[the_ins.nfrag].foff=off;
+ the_ins.fragb[the_ins.nfrag++].fragty=type;
+}
-#define getone(x) ((((x)->m_opcode)>>16)&0xffff)
-#define gettwo(x) (((x)->m_opcode)&0xffff)
+#define isvar(ex) \
+ (op (ex) != O_constant && op (ex) != O_big)
+
+static char *crack_operand PARAMS ((char *str, struct m68k_op *opP));
+static int get_num PARAMS ((struct m68k_exp *exp, int ok));
+static int reverse_16_bits PARAMS ((int in));
+static int reverse_8_bits PARAMS ((int in));
+static void install_gen_operand PARAMS ((int mode, int val));
+static void install_operand PARAMS ((int mode, int val));
+static void s_bss PARAMS ((int));
+static void s_data1 PARAMS ((int));
+static void s_data2 PARAMS ((int));
+static void s_even PARAMS ((int));
+static void s_proc PARAMS ((int));
+static void mri_chip PARAMS ((void));
+static void s_chip PARAMS ((int));
+static void s_fopt PARAMS ((int));
+static void s_opt PARAMS ((int));
+static void s_reg PARAMS ((int));
+static void s_restore PARAMS ((int));
+static void s_save PARAMS ((int));
+static void s_mri_if PARAMS ((int));
+static void s_mri_else PARAMS ((int));
+static void s_mri_endi PARAMS ((int));
+static void s_mri_break PARAMS ((int));
+static void s_mri_next PARAMS ((int));
+static void s_mri_for PARAMS ((int));
+static void s_mri_endf PARAMS ((int));
+static void s_mri_repeat PARAMS ((int));
+static void s_mri_until PARAMS ((int));
+static void s_mri_while PARAMS ((int));
+static void s_mri_endw PARAMS ((int));
+
+static int current_architecture;
+
+struct m68k_cpu {
+ unsigned long arch;
+ const char *name;
+ int alias;
+};
+static const struct m68k_cpu archs[] = {
+ { m68000, "68000", 0 },
+ { m68010, "68010", 0 },
+ { m68020, "68020", 0 },
+ { m68030, "68030", 0 },
+ { m68040, "68040", 0 },
+ { m68060, "68060", 0 },
+ { cpu32, "cpu32", 0 },
+ { m68881, "68881", 0 },
+ { m68851, "68851", 0 },
+ /* Aliases (effectively, so far as gas is concerned) for the above
+ cpus. */
+ { m68020, "68k", 1 },
+ { m68000, "68302", 1 },
+ { m68000, "68008", 1 },
+ { m68000, "68ec000", 1 },
+ { m68000, "68hc000", 1 },
+ { m68000, "68hc001", 1 },
+ { m68020, "68ec020", 1 },
+ { m68030, "68ec030", 1 },
+ { m68040, "68ec040", 1 },
+ { cpu32, "68330", 1 },
+ { cpu32, "68331", 1 },
+ { cpu32, "68332", 1 },
+ { cpu32, "68333", 1 },
+ { cpu32, "68340", 1 },
+ { cpu32, "68360", 1 },
+ { m68881, "68882", 1 },
+};
-#if __STDC__ == 1
-
-static char *crack_operand(char *str, struct m68k_op *opP);
-static int get_num(struct m68k_exp *exp, int ok);
-static int get_regs(int i, char *str, struct m68k_op *opP);
-static int reverse_16_bits(int in);
-static int reverse_8_bits(int in);
-static int try_index(char **s, struct m68k_op *opP);
-static void install_gen_operand(int mode, int val);
-static void install_operand(int mode, int val);
-static void s_bss(void);
-static void s_data1(void);
-static void s_data2(void);
-static void s_even(void);
-static void s_proc(void);
-
-#else /* not __STDC__ */
-
-static char *crack_operand();
-static int get_num();
-static int get_regs();
-static int reverse_16_bits();
-static int reverse_8_bits();
-static int try_index();
-static void install_gen_operand();
-static void install_operand();
-static void s_bss();
-void s_align_bytes();
-static void s_data1();
-static void s_data2();
-static void s_even();
-static void s_proc();
-
-#endif /* not __STDC__ */
-
-static enum m68k_architecture current_architecture = 0;
+static const int n_archs = sizeof (archs) / sizeof (archs[0]);
/* BCC68000 is for patching in an extra jmp instruction for long offsets
on the 68000. The 68000 doesn't support long branches with branchs */
/* This table desribes how you change sizes for the various types of variable
size expressions. This version only supports two kinds. */
-/* Note that calls to frag_var need to specify the maximum expansion needed */
-/* This is currently 10 bytes for DBCC */
+/* Note that calls to frag_var need to specify the maximum expansion
+ needed; this is currently 10 bytes for DBCC. */
/* The fields are:
How far Forward this mode will reach:
How many bytes this mode will add to the size of the frag
Which mode to go to if the offset won't fit in this one
*/
-const relax_typeS
- md_relax_table[] = {
- { 1, 1, 0, 0 }, /* First entries aren't used */
- { 1, 1, 0, 0 }, /* For no good reason except */
- { 1, 1, 0, 0 }, /* that the VAX doesn't either */
- { 1, 1, 0, 0 },
-
- { (127), (-128), 0, TAB(ABRANCH,SHORT)},
- { (32767), (-32768), 2, TAB(ABRANCH,LONG) },
- { 0, 0, 4, 0 },
- { 1, 1, 0, 0 },
-
- { 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE */
- { (32767), (-32768), 2, TAB(FBRANCH,LONG)},
- { 0, 0, 4, 0 },
- { 1, 1, 0, 0 },
-
- { 1, 1, 0, 0 }, /* PCREL doesn't come BYTE */
- { (32767), (-32768), 2, TAB(PCREL,LONG)},
- { 0, 0, 4, 0 },
- { 1, 1, 0, 0 },
-
- { (127), (-128), 0, TAB(BCC68000,SHORT)},
- { (32767), (-32768), 2, TAB(BCC68000,LONG) },
- { 0, 0, 6, 0 }, /* jmp long space */
- { 1, 1, 0, 0 },
-
- { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE */
- { (32767), (-32768), 2, TAB(DBCC,LONG) },
- { 0, 0, 10, 0 }, /* bra/jmp long space */
- { 1, 1, 0, 0 },
-
- { 1, 1, 0, 0 }, /* PCLEA doesn't come BYTE */
- { 32767, -32768, 2, TAB(PCLEA,LONG) },
- { 0, 0, 6, 0 },
- { 1, 1, 0, 0 },
-
- };
+relax_typeS md_relax_table[] =
+{
+ {1, 1, 0, 0}, /* First entries aren't used */
+ {1, 1, 0, 0}, /* For no good reason except */
+ {1, 1, 0, 0}, /* that the VAX doesn't either */
+ {1, 1, 0, 0},
+
+ {(127), (-128), 0, TAB (ABRANCH, SHORT)},
+ {(32767), (-32768), 2, TAB (ABRANCH, LONG)},
+ {0, 0, 4, 0},
+ {1, 1, 0, 0},
+
+ {1, 1, 0, 0}, /* FBRANCH doesn't come BYTE */
+ {(32767), (-32768), 2, TAB (FBRANCH, LONG)},
+ {0, 0, 4, 0},
+ {1, 1, 0, 0},
+
+ {1, 1, 0, 0}, /* PCREL doesn't come BYTE */
+ {(32767), (-32768), 2, TAB (PCREL, LONG)},
+ {0, 0, 4, 0},
+ {1, 1, 0, 0},
+
+ {(127), (-128), 0, TAB (BCC68000, SHORT)},
+ {(32767), (-32768), 2, TAB (BCC68000, LONG)},
+ {0, 0, 6, 0}, /* jmp long space */
+ {1, 1, 0, 0},
+
+ {1, 1, 0, 0}, /* DBCC doesn't come BYTE */
+ {(32767), (-32768), 2, TAB (DBCC, LONG)},
+ {0, 0, 10, 0}, /* bra/jmp long space */
+ {1, 1, 0, 0},
+
+ {1, 1, 0, 0}, /* PCLEA doesn't come BYTE */
+ {32767, -32768, 2, TAB (PCLEA, LONG)},
+ {0, 0, 6, 0},
+ {1, 1, 0, 0},
+
+ /* For, e.g., jmp pcrel indexed. */
+ {125, -130, 0, TAB (PCINDEX, SHORT)},
+ {32765, -32770, 2, TAB (PCINDEX, LONG)},
+ {0, 0, 4, 0},
+ {1, 1, 0, 0},
+};
/* These are the machine dependent pseudo-ops. These are included so
the assembler can work on the output from the SUN C compiler, which
function to call to execute this pseudo-op
Integer arg to pass to the function
*/
-const pseudo_typeS md_pseudo_table[] = {
- { "data1", s_data1, 0 },
- { "data2", s_data2, 0 },
- { "bss", s_bss, 0 },
- { "even", s_even, 0 },
- { "skip", s_space, 0 },
- { "proc", s_proc, 0 },
-#ifdef TE_SUN3
- { "align", s_align_bytes, 0 },
+const pseudo_typeS md_pseudo_table[] =
+{
+ {"data1", s_data1, 0},
+ {"data2", s_data2, 0},
+ {"bss", s_bss, 0},
+ {"even", s_even, 0},
+ {"skip", s_space, 0},
+ {"proc", s_proc, 0},
+#if defined (TE_SUN3) || defined (OBJ_ELF)
+ {"align", s_align_bytes, 0},
#endif
- { 0, 0, 0 }
+#ifdef OBJ_ELF
+ {"swbeg", s_ignore, 0},
+#endif
+ {"extend", float_cons, 'x'},
+ {"ldouble", float_cons, 'x'},
+
+ /* The following pseudo-ops are supported for MRI compatibility. */
+ {"chip", s_chip, 0},
+ {"comline", s_space, 1},
+ {"fopt", s_fopt, 0},
+ {"mask2", s_ignore, 0},
+ {"opt", s_opt, 0},
+ {"reg", s_reg, 0},
+ {"restore", s_restore, 0},
+ {"save", s_save, 0},
+
+ {"if", s_mri_if, 0},
+ {"if.b", s_mri_if, 'b'},
+ {"if.w", s_mri_if, 'w'},
+ {"if.l", s_mri_if, 'l'},
+ {"else", s_mri_else, 0},
+ {"else.s", s_mri_else, 's'},
+ {"else.l", s_mri_else, 'l'},
+ {"endi", s_mri_endi, 0},
+ {"break", s_mri_break, 0},
+ {"break.s", s_mri_break, 's'},
+ {"break.l", s_mri_break, 'l'},
+ {"next", s_mri_next, 0},
+ {"next.s", s_mri_next, 's'},
+ {"next.l", s_mri_next, 'l'},
+ {"for", s_mri_for, 0},
+ {"for.b", s_mri_for, 'b'},
+ {"for.w", s_mri_for, 'w'},
+ {"for.l", s_mri_for, 'l'},
+ {"endf", s_mri_endf, 0},
+ {"repeat", s_mri_repeat, 0},
+ {"until", s_mri_until, 0},
+ {"until.b", s_mri_until, 'b'},
+ {"until.w", s_mri_until, 'w'},
+ {"until.l", s_mri_until, 'l'},
+ {"while", s_mri_while, 0},
+ {"while.b", s_mri_while, 'b'},
+ {"while.w", s_mri_while, 'w'},
+ {"while.l", s_mri_while, 'l'},
+ {"endw", s_mri_endw, 0},
+
+ {0, 0, 0}
};
/* The mote pseudo ops are put into the opcode table, since they
- don't start with a . they look like opcodes to gas.
+ don't start with a . they look like opcodes to gas.
*/
-extern void obj_coff_section();
+extern void obj_coff_section ();
-const pseudo_typeS mote_pseudo_table[] =
+CONST pseudo_typeS mote_pseudo_table[] =
{
- { "dc.l", cons,4},
- { "dc", cons,2},
- { "dc.w", cons,2},
- { "dc.b", cons,1},
+ {"dcl", cons, 4},
+ {"dc", cons, 2},
+ {"dcw", cons, 2},
+ {"dcb", cons, 1},
- { "ds.l", s_space,4},
- { "ds", s_space,2},
- { "ds.w", s_space,2},
- { "ds.b", s_space,1},
+ {"dsl", s_space, 4},
+ {"ds", s_space, 2},
+ {"dsw", s_space, 2},
+ {"dsb", s_space, 1},
- { "xdef", s_globl, 0},
- { "align", s_align_ptwo, 0},
+ {"xdef", s_globl, 0},
+#ifdef OBJ_ELF
+ {"align", s_align_bytes, 0},
+#else
+ {"align", s_align_ptwo, 0},
+#endif
#ifdef M68KCOFF
- { "sect", obj_coff_section,0},
- { "section", obj_coff_section,0},
+ {"sect", obj_coff_section, 0},
+ {"section", obj_coff_section, 0},
#endif
- 0,
+ {0, 0, 0}
};
-/* #define isbyte(x) ((x)>=-128 && (x)<=127) */
-/* #define isword(x) ((x)>=-32768 && (x)<=32767) */
-
#define issbyte(x) ((x)>=-128 && (x)<=127)
#define isubyte(x) ((x)>=0 && (x)<=255)
#define issword(x) ((x)>=-32768 && (x)<=32767)
#define isuword(x) ((x)>=0 && (x)<=65535)
-#define isbyte(x) ((x)>=-128 && (x)<=255)
-#define isword(x) ((x)>=-32768 && (x)<=65535)
+#define isbyte(x) ((x)>= -255 && (x)<=255)
+#define isword(x) ((x)>=-65536 && (x)<=65535)
#define islong(x) (1)
extern char *input_line_pointer;
-enum {
- FAIL = 0,
- OK = 1,
-};
-
-/* JF these tables here are for speed at the expense of size */
-/* You can replace them with the #if 0 versions if you really
- need space and don't mind it running a bit slower */
-
static char mklower_table[256];
#define mklower(c) (mklower_table[(unsigned char)(c)])
static char notend_table[256];
static char alt_notend_table[256];
-#define notend(s) ( !(notend_table[(unsigned char)(*s)] || (*s==':' &&\
- alt_notend_table[(unsigned char)(s[1])])))
-
-#if 0
-#define mklower(c) (isupper(c) ? tolower(c) : c)
-#endif
-
+#define notend(s) \
+ (! (notend_table[(unsigned char) *s] \
+ || (*s == ':' \
+ && alt_notend_table[(unsigned char) s[1]])))
-/* JF modified this to handle cases where the first part of a symbol name
- looks like a register */
+#if defined (M68KCOFF) && !defined (BFD_ASSEMBLER)
-/*
- * m68k_reg_parse() := if it looks like a register, return it's token &
- * advance the pointer.
- */
+#ifdef NO_PCREL_RELOCS
-enum _register m68k_reg_parse(ccp)
-register char **ccp;
+int
+make_pcrel_absolute(fixP, add_number)
+ fixS *fixP;
+ long *add_number;
{
- char *start = *ccp;
-
- if (isalpha(*start) && is_name_beginner(*start))
- {
- char c;
- char *p = start;
- symbolS *symbolP;
+ register unsigned char *opcode = fixP->fx_frag->fr_opcode;
- c = *p++;
- while (isalpha(c) || isdigit(c))
+ /* rewrite the PC relative instructions to absolute address ones.
+ * these are rumoured to be faster, and the apollo linker refuses
+ * to deal with the PC relative relocations.
+ */
+ if (opcode[0] == 0x60 && opcode[1] == 0xff) /* BRA -> JMP */
{
- c = *p++;
- }
-
- ;
- * -- p = 0;
- symbolP = symbol_find(start);
- *p = c;
-
- if (symbolP && S_GET_SEGMENT(symbolP) == SEG_REGISTER)
+ opcode[0] = 0x4e;
+ opcode[1] = 0xf9;
+ }
+ else if (opcode[0] == 0x61 && opcode[1] == 0xff) /* BSR -> JSR */
{
- *ccp = p;
- return S_GET_VALUE(symbolP);
+ opcode[0] = 0x4e;
+ opcode[1] = 0xb9;
}
- }
- return FAIL;
-
-
+ else
+ as_fatal ("Unknown PC relative instruction");
+ *add_number -= 4;
+ return 0;
}
-#define SKIP_WHITE() { str++; if(*str==' ') str++;}
-#define SKIP_W() { ss++; if(*ss==' ') ss++;}
+#endif /* NO_PCREL_RELOCS */
-/* Parse an index specification using Motorola syntax. */
-
-static int
-try_moto_index(s,opP)
-char **s;
-struct m68k_op *opP;
+short
+tc_coff_fix2rtype (fixP)
+ fixS *fixP;
{
- register int i;
- char *ss;
-
- ss= *s;
- /* SKIP_W(); */
- if(*ss==' ') ss++;
- i=m68k_reg_parse(&ss);
- if(!(i>=DATA+0 && i<=ADDR+7)) { /* if i is not DATA or ADDR reg */
- opP->error="Invalid index register";
- *s=ss;
- return FAIL;
- }
- opP->ireg=i;
- /* SKIP_W(); */
- if(*ss==')') {
- opP->isiz=0;
- opP->imul=1;
- SKIP_W();
- *s=ss;
- return OK;
- }
- if(*ss!='.') {
- opP->error="Missing . in index register";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- if(mklower(*ss)=='w') opP->isiz=2;
- else if(mklower(*ss)=='l') opP->isiz=3;
- else {
- opP->error="Size spec not .W or .L";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- if(*ss=='.' || *ss=='*') {
- SKIP_W();
- switch(*ss) {
- case '1':
- case '2':
- case '4':
- case '8':
- opP->imul= *ss-'0';
- break;
- default:
- opP->error="index multiplier not 1, 2, 4 or 8";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- } else opP->imul=1;
- if(*ss!=')') {
- opP->error="Missing )";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- *s=ss;
- return OK;
+ if (fixP->fx_tcbit && fixP->fx_size == 4)
+ return R_RELLONG_NEG;
+#ifdef NO_PCREL_RELOCS
+ know (fixP->fx_pcrel == 0);
+ return (fixP->fx_size == 1 ? R_RELBYTE
+ : fixP->fx_size == 2 ? R_DIR16
+ : R_DIR32);
+#else
+ return (fixP->fx_pcrel ?
+ (fixP->fx_size == 1 ? R_PCRBYTE :
+ fixP->fx_size == 2 ? R_PCRWORD :
+ R_PCRLONG) :
+ (fixP->fx_size == 1 ? R_RELBYTE :
+ fixP->fx_size == 2 ? R_RELWORD :
+ R_RELLONG));
+#endif
}
-/*
- *
- * try_index := data_or_address_register + ')' + SKIP_W
- * | data_or_address_register + ':' + SKIP_W + size_spec + SKIP_W + multiplier + ')' + SKIP_W
- *
- * multiplier := <empty>
- * | ':' + multiplier_number
- * ;
- *
- * multiplier_number := '1' | '2' | '4' | '8' ;
- *
- * size_spec := 'l' | 'L' | 'w' | 'W' ;
- *
- * SKIP_W := <empty> | ' ' ;
- *
- */
-
-static int try_index(s,opP)
-char **s;
-struct m68k_op *opP;
-{
- register int i;
- char *ss;
-
- ss= *s;
- /* SKIP_W(); */
- i=m68k_reg_parse(&ss);
- if(!(i>=DATA+0 && i<=ADDR+7)) { /* if i is not DATA or ADDR reg */
- *s=ss;
- return FAIL;
- }
- opP->ireg=i;
- /* SKIP_W(); */
- if(*ss==')') {
- opP->isiz=0;
- opP->imul=1;
- SKIP_W();
- *s=ss;
- return OK;
- }
- if(*ss!=':') {
- opP->error="Missing : in index register";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- switch(*ss) {
- case 'w':
- case 'W':
- opP->isiz=2;
- break;
- case 'l':
- case 'L':
- opP->isiz=3;
- break;
- default:
- opP->error="Index register size spec not :w or :l";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- if(*ss==':') {
- SKIP_W();
- switch(*ss) {
- case '1':
- case '2':
- case '4':
- case '8':
- if (cpu_of_arch(current_architecture) < m68020) {
- opP->error="no index scaling in pre-68020's";
- *s=ss;
- return FAIL;
- }
- opP->imul= *ss-'0';
- break;
- default:
- opP->error="index multiplier not 1, 2, 4 or 8";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- } else opP->imul=1;
- if(*ss!=')') {
- opP->error="Missing )";
- *s=ss;
- return FAIL;
- }
- SKIP_W();
- *s=ss;
- return OK;
-} /* try_index() */
-
-/* Ian Taylor expanded this function to accept both MIT and Motorola
- syntax. I removed the old comment, since it was wrong. The syntax
- this accepted even before my changes was complex and undocumented.
- I mainly added a large case when the operand string does not
- contain an '@', since the Motorola syntax does not use the '@'
- character. */
-
-int
- m68k_ip_op(str,opP)
-char *str;
-register struct m68k_op *opP;
-{
- char *strend;
- long i;
- char *parse_index();
- int needp;
-
- if (*str==' ') {
- str++;
- } /* Find the beginning of the string */
-
- if(!*str) {
- opP->error="Missing operand";
- return FAIL;
- } /* Out of gas */
-
- for(strend = str; *strend; strend++)
- ;
- --strend;
-
- if(*str=='#') {
- str++;
- opP->con1=add_exp(str,strend);
- opP->mode=IMMED;
- return OK;
- } /* Guess what: A constant. Shar and enjoy */
-
- i = m68k_reg_parse(&str);
-
- if (i!=FAIL) {
- if(*str=='/' || *str=='-') {
- /* "Rm-Rn/Ro-Rp" Register list for MOVEM instruction */
- opP->mode=REGLST;
- return get_regs(i,str,opP);
- }
- if(*str=='\0') {
- opP->reg=i;
- /* "Rn" Register Direct mode */
- if(i>=DATA+0 && i<=DATA+7)
- opP->mode=DREG;
- else if(i>=ADDR+0 && i<=ADDR+7)
- opP->mode=AREG;
- else
- opP->mode=MSCR;
- return OK;
- }
- }
-
- if (*str!='@') {
- char *stmp;
-
- if ((stmp=strchr(str,'@')) != 0) {
- opP->con1=add_exp(str,stmp-1);
- if(stmp==strend) {
- opP->mode=AINDX;
- return(OK);
- }
-
- if ((current_architecture & m68020up) == 0) {
- return(FAIL);
- } /* if target is not a '20 or better */
-
- stmp++;
- if(*stmp++!='(' || *strend--!=')') {
- opP->error="Malformed operand";
- return(FAIL);
- }
- i=try_index(&stmp,opP);
- opP->con2=add_exp(stmp,strend);
-
- if (i == FAIL) {
- opP->mode=AMIND;
- } else {
- opP->mode=APODX;
- }
- return(OK);
- } /* if there's an '@' */
-
-#ifndef MIT_SYNTAX_ONLY
- /* The operand has no '@'. Try to parse it using
- Motorola syntax. */
- /* Logic of the parsing switch(*str):
- case opP->mode =
- ---- -----------
- #anything IMMED 1
- REG AREG or DREG or MSCR 3 or 2 or 13
- REG- or REG/ REGLST 14
- (REG) AINDR 4
- (REG)+ AINC 6
- (REG,INDX) AINDX 8
- (EXPR,REG) AOFF 7
- (EXPR,REG,INDX) AINDX 8
- -(REG) ADEC 5
- EXP2(REG) AOFF 7
- EXP2(REG,INDX) AINDX 8
- EXP2 ABSL 12
-
- REG means truth(m68k_reg_parse(&str))
- INDX means truth(try_moto_index(&str,opP))
- EXPR means not REG
- EXP2 means not REG and not '(' and not '-('
- */
-
- if(*str=='(') {
- str++;
- i=m68k_reg_parse(&str);
- if((i<ADDR+0 || i>ADDR+7)
- && (i<DATA+0 || i>DATA+7
- || *str != ')' || str[1] != '0')
- && i!=PC && i!=ZPC && i!=FAIL) {
- /* Can't indirect off non address regs */
- opP->error="Invalid indirect register";
- return FAIL;
- }
- if(i!=FAIL) {
- opP->reg=i;
- if(*str==')') {
- str++;
- if(*str=='\0') {
- /* "(An)" Address Register Indirect mode
- or "(Dn)" for cas2. */
- if (i>=DATA+0 && i<=DATA+7)
- opP->mode=DINDR;
- else
- opP->mode=AINDR;
- return OK;
- }
- if(*str=='+') {
- if(str[1]=='\0') {
- /* "(An)+" Register Indirect w Postincrement */
- opP->mode=AINC;
- return OK;
- }
- }
- opP->error="Junk after indirect";
- return FAIL;
- }
- if(*str==',') {
- str++;
- i=try_moto_index(&str,opP);
- if(i==FAIL) return FAIL;
- /* "(An,Rn)" Register Indirect with Index mode*/
- opP->mode=AINDX;
- return OK;
- }
- else {
- opP->error="Bad indirect syntax";
- return FAIL;
- }
- }
- else {
- /* "(EXPR,..." , a displacement */
- char *stmp;
- char *index();
-
- if(stmp=index(str,',')) {
- opP->con1=add_exp(str,stmp-1);
- str=stmp;
- SKIP_WHITE();
- i=m68k_reg_parse(&str);
- if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC) {
- /* Can't indirect off non address regs */
- opP->error="Invalid indirect register";
- return FAIL;
- }
- if(i!=FAIL) {
- opP->reg=i;
- if(*str==')') {
- /* "(d,An)" Register Indirect w Displacement */
- opP->mode=AOFF;
- return OK;
- }
- if(*str==',') {
- str++;
- i=try_moto_index(&str,opP);
- if(i==FAIL) return FAIL;
- /* "(d,An,Rn)" Register Indirect with Index */
- opP->mode=AINDX;
- return OK;
- }
- else {
- opP->error="Bad indirect syntax";
- return FAIL;
- }
- }
- else {
- opP->error="Invalid register";
- return FAIL;
- }
- }
- else {
- opP->mode = ABSL;
- opP->con1 = add_exp(str-1,strend);
- return OK;
- }
- }
- }
+#endif
- if(*str=='-') {
- if(str[1]=='(') {
- str = str+2;
- i=m68k_reg_parse(&str);
- if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC && i!=FAIL) {
- /* Can't indirect off non address regs */
- opP->error="Invalid indirect register";
- return FAIL;
- }
- if(i!=FAIL) {
- opP->reg=i;
- if(*str==')') {
- str++;
- if(*str=='\0') {
- /* "-(An)" Register Indirect with Predecrement */
- opP->mode=ADEC;
- return OK;
- }
- opP->error="Junk after indirect";
- return FAIL;
- }
- opP->error="Bad indirect syntax";
- return FAIL;
- }
- opP->mode = ABSL;
- opP->con1 = add_exp(str-2,strend);
- return OK;
- }
- /* if '-' but not "-(', do nothing */
- }
+#ifdef OBJ_ELF
- /* whether *str=='-' or not */
- {
- /* "EXP2" or "EXP2(REG..." */
- char *stmp;
- char *index();
- if(stmp=index(str,'(')) {
- char *ostr=str;
-
- opP->con1=add_exp(str,stmp-1);
- str=stmp+1;
- i=m68k_reg_parse(&str);
- if((i<ADDR+0 || i>ADDR+7) && i!=PC
- && i!=ZPC && i!=FAIL) {
- /* Can't indirect off non address regs */
- opP->error="Invalid indirect register";
- return FAIL;
- }
- if(i!=FAIL) {
- opP->reg=i;
- if(*str==')') {
- /* "d(An)" Register Indirect w Displacement */
- opP->mode=AOFF;
- return OK;
- }
- if(*str==',') {
- str++;
- i=try_moto_index(&str,opP);
- if(i==FAIL) return FAIL;
- /* "d(An,Rn)" Register Indirect with Index */
- opP->mode=AINDX;
- return OK;
- }
- else {
- opP->error="Bad indirect syntax";
- return FAIL;
- }
- }
- else {
- opP->mode = ABSL;
- opP->con1 = add_exp(ostr,strend);
- return OK;
- }
- }
- else {
- /* "EXP2" Absolute */
- opP->mode=ABSL;
- opP->isiz=0;
- if(strend[-1]=='.' || strend[-1]==':') {
- /* mode ==foo.[wl] */
- switch(*strend) {
- case 'w':
- case 'W':
- opP->isiz=2;
- strend-=2;
- break;
- case 'l':
- case 'L':
- opP->isiz=3;
- strend-=2;
- break;
- }
- }
- opP->con1=add_exp(str,strend);
- return OK;
- }
- }
- /*NOTREACHED*/
-#else /* defined (MIT_SYNTAX_ONLY) */
- opP->mode=ABSL;
- opP->con1=add_exp(str,strend);
- return OK;
-#endif /* defined (MIT_SYNTAX_ONLY) */
- }
+/* Compute the relocation code for a fixup of SIZE bytes, using pc
+ relative relocation if PCREL is non-zero. PIC says whether a special
+ pic relocation was requested. */
- opP->reg=i;
+static bfd_reloc_code_real_type get_reloc_code
+ PARAMS ((int, int, enum pic_relocation));
- /* Can't indirect off non address regs, but Dx@ is OK for cas2 */
- if((i<ADDR+0 || i>ADDR+7) && i!=PC && i!=ZPC && i!=FAIL
- && (str[1] != '\0' || i<DATA+0 || i>DATA+7)) {
- opP->error="Invalid indirect register";
- return FAIL;
+static bfd_reloc_code_real_type
+get_reloc_code (size, pcrel, pic)
+ int size;
+ int pcrel;
+ enum pic_relocation pic;
+{
+ switch (pic)
+ {
+ case pic_got_pcrel:
+ switch (size)
+ {
+ case 1:
+ return BFD_RELOC_8_GOT_PCREL;
+ case 2:
+ return BFD_RELOC_16_GOT_PCREL;
+ case 4:
+ return BFD_RELOC_32_GOT_PCREL;
}
- know(*str == '@');
+ break;
- str++;
- switch(*str) {
- case '\0':
- if (i<DATA+0 || i>DATA+7)
- opP->mode=AINDR;
- else
- opP->mode=DINDR;
- return OK;
- case '-':
- opP->mode=ADEC;
- return OK;
- case '+':
- opP->mode=AINC;
- return OK;
- case '(':
- str++;
- break;
- default:
- opP->error="Junk after indirect";
- return FAIL;
- }
- /* Some kind of indexing involved. Lets find out how bad it is */
- i=try_index(&str,opP);
- /* Didn't start with an index reg, maybe its offset or offset,reg */
- if(i==FAIL) {
- char *beg_str;
-
- beg_str=str;
- for(i=1;i;) {
- switch(*str++) {
- case '\0':
- opP->error="Missing )";
- return FAIL;
- case ',': i=0; break;
- case '(': i++; break;
- case ')': --i; break;
- }
- }
- /* if(str[-3]==':') {
- int siz;
-
- switch(str[-2]) {
- case 'b':
- case 'B':
- siz=1;
- break;
- case 'w':
- case 'W':
- siz=2;
- break;
- case 'l':
- case 'L':
- siz=3;
- break;
- default:
- opP->error="Specified size isn't :w or :l";
- return FAIL;
- }
- opP->con1=add_exp(beg_str,str-4);
- opP->con1->e_siz=siz;
- } else */
- opP->con1=add_exp(beg_str,str-2);
- /* Should be offset,reg */
- if(str[-1]==',') {
- i=try_index(&str,opP);
- if(i==FAIL) {
- opP->error="Malformed index reg";
- return FAIL;
- }
- }
- }
- /* We've now got offset) offset,reg) or reg) */
-
- if (*str == '\0') {
- /* Th-the-thats all folks */
- if (opP->reg == FAIL) opP->mode = AINDX; /* Other form of indirect */
- else if(opP->ireg == FAIL) opP->mode = AOFF;
- else opP->mode = AINDX;
- return(OK);
- }
- /* Next thing had better be another @ */
- if (*str == '@') {
- if (str[1] == '(') {
- needp = 1;
- str+=2;
- }
- else {
- needp = 0;
- str++;
- }
+ case pic_got_off:
+ switch (size)
+ {
+ case 1:
+ return BFD_RELOC_8_GOTOFF;
+ case 2:
+ return BFD_RELOC_16_GOTOFF;
+ case 4:
+ return BFD_RELOC_32_GOTOFF;
}
+ break;
- if ((current_architecture & m68020up) == 0) {
- return(FAIL);
- } /* if target is not a '20 or better */
-
-
- if(opP->ireg != FAIL) {
- opP->mode = APRDX;
-
- i = try_index(&str, opP);
- if (i != FAIL) {
- opP->error = "Two index registers! not allowed!";
- return(FAIL);
- }
- } else {
- i = try_index(&str, opP);
+ case pic_plt_pcrel:
+ switch (size)
+ {
+ case 1:
+ return BFD_RELOC_8_PLT_PCREL;
+ case 2:
+ return BFD_RELOC_16_PLT_PCREL;
+ case 4:
+ return BFD_RELOC_32_PLT_PCREL;
}
+ break;
- if (i == FAIL) {
- char *beg_str;
-
- beg_str = str;
+ case pic_plt_off:
+ switch (size)
+ {
+ case 1:
+ return BFD_RELOC_8_PLTOFF;
+ case 2:
+ return BFD_RELOC_16_PLTOFF;
+ case 4:
+ return BFD_RELOC_32_PLTOFF;
+ }
+ break;
- for (i = 1; i; ) {
- switch(*str++) {
- case '\0':
- if (needp)
- opP->error="Missing )";
- return(FAIL);
- break;
- case ',': i=0; break;
- case '(': i++; break;
- case ')': --i; break;
- }
- }
+ case pic_none:
+ if (pcrel)
+ {
+ switch (size)
+ {
+ case 1:
+ return BFD_RELOC_8_PCREL;
+ case 2:
+ return BFD_RELOC_16_PCREL;
+ case 4:
+ return BFD_RELOC_32_PCREL;
+ }
+ }
+ else
+ {
+ switch (size)
+ {
+ case 1:
+ return BFD_RELOC_8;
+ case 2:
+ return BFD_RELOC_16;
+ case 4:
+ return BFD_RELOC_32;
+ }
+ }
+ }
- opP->con2=add_exp(beg_str,str-2);
+ as_bad ("Can not do %d byte %s%srelocation", size,
+ pcrel ? "pc-relative " : "",
+ pic == pic_none ? "" : "pic ");
+ return BFD_RELOC_NONE;
+}
- if (str[-1] == ',') {
- if (opP->ireg != FAIL) {
- opP->error = "Can't have two index regs";
- return(FAIL);
- }
+/* Here we decide which fixups can be adjusted to make them relative
+ to the beginning of the section instead of the symbol. Basically
+ we need to make sure that the dynamic relocations are done
+ correctly, so in some cases we force the original symbol to be
+ used. */
+int
+tc_m68k_fix_adjustable (fixP)
+ fixS *fixP;
+{
+ /* Prevent all adjustments to global symbols. */
+ if (S_IS_EXTERNAL (fixP->fx_addsy))
+ return 0;
- i = try_index(&str, opP);
+ /* adjust_reloc_syms doesn't know about the GOT */
+ switch (fixP->fx_r_type)
+ {
+ case BFD_RELOC_8_GOT_PCREL:
+ case BFD_RELOC_16_GOT_PCREL:
+ case BFD_RELOC_32_GOT_PCREL:
+ case BFD_RELOC_8_GOTOFF:
+ case BFD_RELOC_16_GOTOFF:
+ case BFD_RELOC_32_GOTOFF:
+ case BFD_RELOC_8_PLT_PCREL:
+ case BFD_RELOC_16_PLT_PCREL:
+ case BFD_RELOC_32_PLT_PCREL:
+ case BFD_RELOC_8_PLTOFF:
+ case BFD_RELOC_16_PLTOFF:
+ case BFD_RELOC_32_PLTOFF:
+ return 0;
- if (i == FAIL) {
- opP->error = "malformed index reg";
- return(FAIL);
- }
+ default:
+ return 1;
+ }
+}
- opP->mode = APODX;
- } else if (opP->ireg != FAIL) {
- opP->mode = APRDX;
- } else {
- opP->mode = AMIND;
- }
- } else {
- opP->mode = APODX;
- }
+#else /* !OBJ_ELF */
- if(*str!='\0') {
- opP->error="Junk after indirect";
- return FAIL;
- }
- return(OK);
-} /* m68k_ip_op() */
+#define get_reloc_code(SIZE,PCREL,OTHER) NO_RELOC
+#endif /* OBJ_ELF */
-#ifdef M68KCOFF
+#ifdef BFD_ASSEMBLER
-short tc_coff_fix2rtype(fixP)
-fixS *fixP;
+arelent *
+tc_gen_reloc (section, fixp)
+ asection *section;
+ fixS *fixp;
{
- return (fixP->fx_pcrel ?
- (fixP->fx_size == 1 ? R_PCRBYTE :
- fixP->fx_size == 2 ? R_PCRWORD :
- R_PCRLONG):
- (fixP->fx_size == 1 ? R_RELBYTE :
- fixP->fx_size == 2 ? R_RELWORD :
- R_RELLONG));
-
-
-}
+ arelent *reloc;
+ bfd_reloc_code_real_type code;
-#endif
+ if (fixp->fx_tcbit)
+ abort ();
-#ifdef TEST1 /* TEST1 tests m68k_ip_op(), which parses operands */
-main()
-{
- char buf[128];
- struct m68k_op thark;
-
- for(;;) {
- if(!gets(buf))
- break;
- memset(&thark, '\0', sizeof(thark));
- if(!m68k_ip_op(buf,&thark)) printf("FAIL:");
- if(thark.error)
- printf("op1 error %s in %s\n",thark.error,buf);
- printf("mode %d, reg %d, ",thark.mode,thark.reg);
- if(thark.b_const)
- printf("Constant: '%.*s',",1+thark.e_const-thark.b_const,thark.b_const);
- printf("ireg %d, isiz %d, imul %d ",thark.ireg,thark.isiz,thark.imul);
- if(thark.b_iadd)
- printf("Iadd: '%.*s'",1+thark.e_iadd-thark.b_iadd,thark.b_iadd);
- printf("\n");
+ if (fixp->fx_r_type != BFD_RELOC_NONE)
+ code = fixp->fx_r_type;
+ else
+ {
+#define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
+ switch (F (fixp->fx_size, fixp->fx_pcrel))
+ {
+#define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
+ MAP (1, 0, BFD_RELOC_8);
+ MAP (2, 0, BFD_RELOC_16);
+ MAP (4, 0, BFD_RELOC_32);
+ MAP (1, 1, BFD_RELOC_8_PCREL);
+ MAP (2, 1, BFD_RELOC_16_PCREL);
+ MAP (4, 1, BFD_RELOC_32_PCREL);
+ default:
+ abort ();
}
- exit(0);
-}
-
+ }
+#undef F
+#undef MAP
+
+ reloc = (arelent *) bfd_alloc_by_size_t (stdoutput, sizeof (arelent));
+ assert (reloc != 0);
+ reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
+ reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+#ifndef OBJ_ELF
+ if (fixp->fx_pcrel)
+ reloc->addend = fixp->fx_addnumber;
+ else
+ reloc->addend = 0;
+#else
+ if (!fixp->fx_pcrel)
+ reloc->addend = fixp->fx_addnumber;
+ else if ((fixp->fx_addsy->bsym->flags & BSF_SECTION_SYM) != 0)
+ reloc->addend = (section->vma
+ + (fixp->fx_pcrel_adjust == 64
+ ? -1 : fixp->fx_pcrel_adjust)
+ + fixp->fx_addnumber
+ + md_pcrel_from (fixp));
+ else
+ reloc->addend = (fixp->fx_offset
+ + (fixp->fx_pcrel_adjust == 64
+ ? -1 : fixp->fx_pcrel_adjust));
#endif
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
+ assert (reloc->howto != 0);
+
+ return reloc;
+}
-static struct hash_control* op_hash = NULL; /* handle of the OPCODE hash table
- NULL means any use before m68k_ip_begin()
- will crash */
+#endif /* BFD_ASSEMBLER */
+/* Handle of the OPCODE hash table. NULL means any use before
+ m68k_ip_begin() will crash. */
+static struct hash_control *op_hash;
\f
-/*
- * m 6 8 k _ i p ( )
- *
- * This converts a string into a 68k instruction.
- * The string must be a bare single instruction in sun format
- * with RMS-style 68020 indirects
- * (example: )
- *
- * It provides some error messages: at most one fatal error message (which
- * stops the scan) and at most one warning message for each operand.
- * The 68k instruction is returned in exploded form, since we have no
- * knowledge of how you parse (or evaluate) your expressions.
- * We do however strip off and decode addressing modes and operation
- * mnemonic.
- *
- * This function's value is a string. If it is not "" then an internal
- * logic error was found: read this code to assign meaning to the string.
- * No argument string should generate such an error string:
- * it means a bug in our code, not in the user's text.
- *
- * You MUST have called m68k_ip_begin() once and m86_ip_end() never before using
- * this function.
- */
+/* Assemble an m68k instruction. */
-/* JF this function no longer returns a useful value. Sorry */
-void m68k_ip (instring)
+void
+m68k_ip (instring)
char *instring;
{
register char *p;
register struct m68k_op *opP;
register struct m68k_incant *opcode;
- register char *s;
+ register const char *s;
register int tmpreg = 0, baseo = 0, outro = 0, nextword;
char *pdot, *pdotmove;
- int siz1, siz2;
- char c;
- int losing;
- int opsfound;
- char *crack_operand();
+ enum m68k_size siz1, siz2;
+ char c;
+ int losing;
+ int opsfound;
+ char *crack_operand ();
LITTLENUM_TYPE words[6];
LITTLENUM_TYPE *wordp;
unsigned long ok_arch = 0;
/* Scan up to end of operation-code, which MUST end in end-of-string
or exactly 1 space. */
pdot = 0;
- for (p = instring; *p != '\0'; p++) {
- if (*p == ' ')
- break;
- if (*p == '.')
- pdot = p;
- }
+ for (p = instring; *p != '\0'; p++)
+ {
+ if (*p == ' ')
+ break;
+ if (*p == '.')
+ pdot = p;
+ }
- if (p == instring) {
- the_ins.error = "No operator";
- the_ins.opcode[0] = NULL;
- /* the_ins.numo=1; */
- return;
- }
+ if (p == instring)
+ {
+ the_ins.error = "No operator";
+ return;
+ }
/* p now points to the end of the opcode name, probably whitespace.
- make sure the name is null terminated by clobbering the whitespace,
- look it up in the hash table, then fix it back.
+ Make sure the name is null terminated by clobbering the
+ whitespace, look it up in the hash table, then fix it back.
Remove a dot, first, since the opcode tables have none. */
- if (pdot != NULL) {
- for (pdotmove=pdot; pdotmove<p; pdotmove++)
- *pdotmove=pdotmove[1];
- p--;
- }
+ if (pdot != NULL)
+ {
+ for (pdotmove = pdot; pdotmove < p; pdotmove++)
+ *pdotmove = pdotmove[1];
+ p--;
+ }
c = *p;
*p = '\0';
- opcode = (struct m68k_incant *)hash_find (op_hash, instring);
+ opcode = (struct m68k_incant *) hash_find (op_hash, instring);
*p = c;
- if (pdot != NULL) {
- for (pdotmove=p; pdotmove>pdot; pdotmove--)
- *pdotmove=pdotmove[-1];
- *pdot='.';
- ++p;
- }
-
- if (opcode == NULL) {
- the_ins.error = "Unknown operator";
- the_ins.opcode[0] = NULL;
- /* the_ins.numo=1; */
- return;
- }
+ if (pdot != NULL)
+ {
+ for (pdotmove = p; pdotmove > pdot; pdotmove--)
+ *pdotmove = pdotmove[-1];
+ *pdot = '.';
+ ++p;
+ }
+
+ if (opcode == NULL)
+ {
+ the_ins.error = "Unknown operator";
+ return;
+ }
/* found a legitimate opcode, start matching operands */
- while (*p == ' ') ++p;
+ while (*p == ' ')
+ ++p;
+
+ if (opcode->m_operands == 0)
+ {
+ char *old = input_line_pointer;
+ *old = '\n';
+ input_line_pointer = p;
+ /* Ahh - it's a motorola style psuedo op */
+ mote_pseudo_table[opcode->m_opnum].poc_handler
+ (mote_pseudo_table[opcode->m_opnum].poc_val);
+ input_line_pointer = old;
+ *old = 0;
+
+ return;
+ }
+
+ if (flag_mri && opcode->m_opnum == 0)
+ {
+ /* In MRI mode, random garbage is allowed after an instruction
+ which accepts no operands. */
+ the_ins.args = opcode->m_operands;
+ the_ins.numargs = opcode->m_opnum;
+ the_ins.numo = opcode->m_codenum;
+ the_ins.opcode[0] = getone (opcode);
+ the_ins.opcode[1] = gettwo (opcode);
+ return;
+ }
+
+ for (opP = &the_ins.operands[0]; *p; opP++)
+ {
+ p = crack_operand (p, opP);
+
+ if (opP->error)
+ {
+ the_ins.error = opP->error;
+ return;
+ }
+ }
+
+ opsfound = opP - &the_ins.operands[0];
+
+ /* This ugly hack is to support the floating pt opcodes in their
+ standard form. Essentially, we fake a first enty of type COP#1 */
+ if (opcode->m_operands[0] == 'I')
+ {
+ int n;
+
+ for (n = opsfound; n > 0; --n)
+ the_ins.operands[n] = the_ins.operands[n - 1];
+
+ memset ((char *) (&the_ins.operands[0]), '\0',
+ sizeof (the_ins.operands[0]));
+ the_ins.operands[0].mode = CONTROL;
+ the_ins.operands[0].reg = m68k_float_copnum;
+ opsfound++;
+ }
+
+ /* We've got the operands. Find an opcode that'll accept them */
+ for (losing = 0;;)
+ {
+ /* If we didn't get the right number of ops, or we have no
+ common model with this pattern then reject this pattern. */
+
+ if (opsfound != opcode->m_opnum
+ || ((opcode->m_arch & current_architecture) == 0))
+ {
+ ++losing;
+ ok_arch |= opcode->m_arch;
+ }
+ else
+ {
+ for (s = opcode->m_operands, opP = &the_ins.operands[0];
+ *s && !losing;
+ s += 2, opP++)
+ {
+ /* Warning: this switch is huge! */
+ /* I've tried to organize the cases into this order:
+ non-alpha first, then alpha by letter. Lower-case
+ goes directly before uppercase counterpart. */
+ /* Code with multiple case ...: gets sorted by the lowest
+ case ... it belongs to. I hope this makes sense. */
+ switch (*s)
+ {
+ case '!':
+ switch (opP->mode)
+ {
+ case IMMED:
+ case DREG:
+ case AREG:
+ case FPREG:
+ case CONTROL:
+ case AINC:
+ case ADEC:
+ case REGLST:
+ losing++;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case '`':
+ switch (opP->mode)
+ {
+ case IMMED:
+ case DREG:
+ case AREG:
+ case FPREG:
+ case CONTROL:
+ case AINC:
+ case REGLST:
+ case AINDR:
+ losing++;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case '#':
+ if (opP->mode != IMMED)
+ losing++;
+ else if (s[1] == 'b'
+ && ! isvar (&opP->disp)
+ && (opP->disp.exp.X_op != O_constant
+ || ! isbyte (opP->disp.exp.X_add_number)))
+ losing++;
+ else if (s[1] == 'w'
+ && ! isvar (&opP->disp)
+ && (opP->disp.exp.X_op != O_constant
+ || ! isword (opP->disp.exp.X_add_number)))
+ losing++;
+ else if (s[1] == 'W'
+ && ! isvar (&opP->disp)
+ && (opP->disp.exp.X_op != O_constant
+ || ! issword (opP->disp.exp.X_add_number)))
+ losing++;
+ break;
+
+ case '^':
+ case 'T':
+ if (opP->mode != IMMED)
+ losing++;
+ break;
+
+ case '$':
+ if (opP->mode == AREG
+ || opP->mode == CONTROL
+ || opP->mode == FPREG
+ || opP->mode == IMMED
+ || opP->mode == REGLST
+ || (opP->mode != ABSL
+ && (opP->reg == PC
+ || opP->reg == ZPC)))
+ losing++;
+ break;
+
+ case '%':
+ if (opP->mode == CONTROL
+ || opP->mode == FPREG
+ || opP->mode == REGLST
+ || opP->mode == IMMED
+ || (opP->mode != ABSL
+ && (opP->reg == PC
+ || opP->reg == ZPC)))
+ losing++;
+ break;
+
+ case '&':
+ switch (opP->mode)
+ {
+ case DREG:
+ case AREG:
+ case FPREG:
+ case CONTROL:
+ case IMMED:
+ case AINC:
+ case ADEC:
+ case REGLST:
+ losing++;
+ break;
+ case ABSL:
+ break;
+ default:
+ if (opP->reg == PC
+ || opP->reg == ZPC)
+ losing++;
+ break;
+ }
+ break;
+
+ case '*':
+ if (opP->mode == CONTROL
+ || opP->mode == FPREG
+ || opP->mode == REGLST)
+ losing++;
+ break;
+
+ case '+':
+ if (opP->mode != AINC)
+ losing++;
+ break;
+
+ case '-':
+ if (opP->mode != ADEC)
+ losing++;
+ break;
+
+ case '/':
+ switch (opP->mode)
+ {
+ case AREG:
+ case CONTROL:
+ case FPREG:
+ case AINC:
+ case ADEC:
+ case IMMED:
+ case REGLST:
+ losing++;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case ';':
+ switch (opP->mode)
+ {
+ case AREG:
+ case CONTROL:
+ case FPREG:
+ case REGLST:
+ losing++;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case '?':
+ switch (opP->mode)
+ {
+ case AREG:
+ case CONTROL:
+ case FPREG:
+ case AINC:
+ case ADEC:
+ case IMMED:
+ case REGLST:
+ losing++;
+ break;
+ case ABSL:
+ break;
+ default:
+ if (opP->reg == PC || opP->reg == ZPC)
+ losing++;
+ break;
+ }
+ break;
+
+ case '@':
+ switch (opP->mode)
+ {
+ case AREG:
+ case CONTROL:
+ case FPREG:
+ case IMMED:
+ case REGLST:
+ losing++;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case '~': /* For now! (JF FOO is this right?) */
+ switch (opP->mode)
+ {
+ case DREG:
+ case AREG:
+ case CONTROL:
+ case FPREG:
+ case IMMED:
+ case REGLST:
+ losing++;
+ break;
+ case ABSL:
+ break;
+ default:
+ if (opP->reg == PC
+ || opP->reg == ZPC)
+ losing++;
+ break;
+ }
+ break;
+
+ case '3':
+ if (opP->mode != CONTROL
+ || (opP->reg != TT0 && opP->reg != TT1))
+ losing++;
+ break;
+
+ case 'A':
+ if (opP->mode != AREG)
+ losing++;
+ break;
+
+ case 'a':
+ if (opP->mode != AINDR)
+ ++losing;
+ break;
+
+ case 'B': /* FOO */
+ if (opP->mode != ABSL
+ || (flag_long_jumps
+ && strncmp (instring, "jbsr", 4) == 0))
+ losing++;
+ break;
+
+ case 'C':
+ if (opP->mode != CONTROL || opP->reg != CCR)
+ losing++;
+ break;
+
+ case 'd':
+ if (opP->mode != DISP
+ || opP->reg < ADDR0
+ || opP->reg > ADDR7)
+ losing++;
+ break;
+
+ case 'D':
+ if (opP->mode != DREG)
+ losing++;
+ break;
+
+ case 'F':
+ if (opP->mode != FPREG)
+ losing++;
+ break;
+
+ case 'I':
+ if (opP->mode != CONTROL
+ || opP->reg < COP0
+ || opP->reg > COP7)
+ losing++;
+ break;
+
+ case 'J':
+ if (opP->mode != CONTROL
+ || opP->reg < USP
+ || opP->reg > last_movec_reg)
+ losing++;
+ else
+ {
+ const enum m68k_register *rp;
+ for (rp = control_regs; *rp; rp++)
+ if (*rp == opP->reg)
+ break;
+ if (*rp == 0)
+ losing++;
+ }
+ break;
+
+ case 'k':
+ if (opP->mode != IMMED)
+ losing++;
+ break;
+
+ case 'l':
+ case 'L':
+ if (opP->mode == DREG
+ || opP->mode == AREG
+ || opP->mode == FPREG)
+ {
+ if (s[1] == '8')
+ losing++;
+ else
+ {
+ switch (opP->mode)
+ {
+ case DREG:
+ opP->mask = 1 << (opP->reg - DATA0);
+ break;
+ case AREG:
+ opP->mask = 1 << (opP->reg - ADDR0 + 8);
+ break;
+ case FPREG:
+ opP->mask = 1 << (opP->reg - FP0 + 16);
+ break;
+ default:
+ abort ();
+ }
+ opP->mode = REGLST;
+ }
+ }
+ else if (opP->mode == CONTROL)
+ {
+ if (s[1] != '8')
+ losing++;
+ else
+ {
+ switch (opP->reg)
+ {
+ case FPI:
+ opP->mask = 1 << 24;
+ break;
+ case FPS:
+ opP->mask = 1 << 25;
+ break;
+ case FPC:
+ opP->mask = 1 << 26;
+ break;
+ default:
+ losing++;
+ break;
+ }
+ opP->mode = REGLST;
+ }
+ }
+ else if (opP->mode == ABSL
+ && opP->disp.size == SIZE_UNSPEC
+ && opP->disp.exp.X_op == O_constant)
+ {
+ /* This is what the MRI REG pseudo-op generates. */
+ opP->mode = REGLST;
+ opP->mask = opP->disp.exp.X_add_number;
+ }
+ else if (opP->mode != REGLST)
+ losing++;
+ else if (s[1] == '8' && (opP->mask & 0x0ffffff) != 0)
+ losing++;
+ else if (s[1] == '3' && (opP->mask & 0x7000000) != 0)
+ losing++;
+ break;
+
+ case 'M':
+ if (opP->mode != IMMED)
+ losing++;
+ else if (opP->disp.exp.X_op != O_constant
+ || ! issbyte (opP->disp.exp.X_add_number))
+ losing++;
+ else if (! m68k_quick
+ && instring[3] != 'q'
+ && instring[4] != 'q')
+ losing++;
+ break;
+
+ case 'O':
+ if (opP->mode != DREG && opP->mode != IMMED)
+ losing++;
+ break;
+
+ case 'Q':
+ if (opP->mode != IMMED)
+ losing++;
+ else if (opP->disp.exp.X_op != O_constant
+ || opP->disp.exp.X_add_number < 1
+ || opP->disp.exp.X_add_number > 8)
+ losing++;
+ else if (! m68k_quick
+ && (strncmp (instring, "add", 3) == 0
+ || strncmp (instring, "sub", 3) == 0)
+ && instring[3] != 'q')
+ losing++;
+ break;
+
+ case 'R':
+ if (opP->mode != DREG && opP->mode != AREG)
+ losing++;
+ break;
+
+ case 'r':
+ if (opP->mode != AINDR
+ && (opP->mode != BASE
+ || (opP->reg != 0
+ && opP->reg != ZADDR0)
+ || opP->disp.exp.X_op != O_absent
+ || ((opP->index.reg < DATA0
+ || opP->index.reg > DATA7)
+ && (opP->index.reg < ADDR0
+ || opP->index.reg > ADDR7))
+ || opP->index.size != SIZE_UNSPEC
+ || opP->index.scale != 1))
+ losing++;
+ break;
+
+ case 's':
+ if (opP->mode != CONTROL
+ || ! (opP->reg == FPI
+ || opP->reg == FPS
+ || opP->reg == FPC))
+ losing++;
+ break;
+
+ case 'S':
+ if (opP->mode != CONTROL || opP->reg != SR)
+ losing++;
+ break;
+
+ case 't':
+ if (opP->mode != IMMED)
+ losing++;
+ else if (opP->disp.exp.X_op != O_constant
+ || opP->disp.exp.X_add_number < 0
+ || opP->disp.exp.X_add_number > 7)
+ losing++;
+ break;
+
+ case 'U':
+ if (opP->mode != CONTROL || opP->reg != USP)
+ losing++;
+ break;
+
+ /* JF these are out of order. We could put them
+ in order if we were willing to put up with
+ bunches of #ifdef m68851s in the code.
+
+ Don't forget that you need these operands
+ to use 68030 MMU instructions. */
+#ifndef NO_68851
+ /* Memory addressing mode used by pflushr */
+ case '|':
+ if (opP->mode == CONTROL
+ || opP->mode == FPREG
+ || opP->mode == DREG
+ || opP->mode == AREG
+ || opP->mode == REGLST)
+ losing++;
+ /* We should accept immediate operands, but they
+ supposedly have to be quad word, and we don't
+ handle that. I would like to see what a Motorola
+ assembler does before doing something here. */
+ if (opP->mode == IMMED)
+ losing++;
+ break;
+
+ case 'f':
+ if (opP->mode != CONTROL
+ || (opP->reg != SFC && opP->reg != DFC))
+ losing++;
+ break;
+
+ case '0':
+ if (opP->mode != CONTROL || opP->reg != TC)
+ losing++;
+ break;
+
+ case '1':
+ if (opP->mode != CONTROL || opP->reg != AC)
+ losing++;
+ break;
+
+ case '2':
+ if (opP->mode != CONTROL
+ || (opP->reg != CAL
+ && opP->reg != VAL
+ && opP->reg != SCC))
+ losing++;
+ break;
+
+ case 'V':
+ if (opP->mode != CONTROL
+ || opP->reg != VAL)
+ losing++;
+ break;
+
+ case 'W':
+ if (opP->mode != CONTROL
+ || (opP->reg != DRP
+ && opP->reg != SRP
+ && opP->reg != CRP))
+ losing++;
+ break;
+
+ case 'X':
+ if (opP->mode != CONTROL
+ || (!(opP->reg >= BAD && opP->reg <= BAD + 7)
+ && !(opP->reg >= BAC && opP->reg <= BAC + 7)))
+ losing++;
+ break;
+
+ case 'Y':
+ if (opP->mode != CONTROL || opP->reg != PSR)
+ losing++;
+ break;
+
+ case 'Z':
+ if (opP->mode != CONTROL || opP->reg != PCSR)
+ losing++;
+ break;
+#endif
+ case 'c':
+ if (opP->mode != CONTROL
+ || (opP->reg != NC
+ && opP->reg != IC
+ && opP->reg != DC
+ && opP->reg != BC))
+ {
+ losing++;
+ } /* not a cache specifier. */
+ break;
+
+ case '_':
+ if (opP->mode != ABSL)
+ ++losing;
+ break;
+
+ default:
+ abort ();
+ } /* switch on type of operand */
+
+ if (losing)
+ break;
+ } /* for each operand */
+ } /* if immediately wrong */
+
+ if (!losing)
+ {
+ break;
+ } /* got it. */
+
+ opcode = opcode->m_next;
+
+ if (!opcode)
+ {
+ if (ok_arch
+ && !(ok_arch & current_architecture))
+ {
+ char buf[200], *cp;
+ int len;
+ strcpy (buf,
+ "invalid instruction for this architecture; needs ");
+ cp = buf + strlen (buf);
+ switch (ok_arch)
+ {
+ case mfloat:
+ strcpy (cp, "fpu (68040, 68060 or 68881/68882)");
+ break;
+ case mmmu:
+ strcpy (cp, "mmu (68030 or 68851)");
+ break;
+ case m68020up:
+ strcpy (cp, "68020 or higher");
+ break;
+ case m68000up:
+ strcpy (cp, "68000 or higher");
+ break;
+ case m68010up:
+ strcpy (cp, "68010 or higher");
+ break;
+ default:
+ {
+ int got_one = 0, idx;
+ for (idx = 0; idx < sizeof (archs) / sizeof (archs[0]);
+ idx++)
+ {
+ if ((archs[idx].arch & ok_arch)
+ && ! archs[idx].alias)
+ {
+ if (got_one)
+ {
+ strcpy (cp, " or ");
+ cp += strlen (cp);
+ }
+ got_one = 1;
+ strcpy (cp, archs[idx].name);
+ cp += strlen (cp);
+ }
+ }
+ }
+ }
+ len = cp - buf + 1;
+ cp = malloc (len);
+ strcpy (cp, buf);
+ the_ins.error = cp;
+ }
+ else
+ the_ins.error = "operands mismatch";
+ return;
+ } /* Fell off the end */
+
+ losing = 0;
+ }
+
+ /* now assemble it */
+
+ the_ins.args = opcode->m_operands;
+ the_ins.numargs = opcode->m_opnum;
+ the_ins.numo = opcode->m_codenum;
+ the_ins.opcode[0] = getone (opcode);
+ the_ins.opcode[1] = gettwo (opcode);
+
+ for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++)
+ {
+ /* This switch is a doozy.
+ Watch the first step; its a big one! */
+ switch (s[0])
+ {
+
+ case '*':
+ case '~':
+ case '%':
+ case ';':
+ case '@':
+ case '!':
+ case '&':
+ case '$':
+ case '?':
+ case '/':
+ case '`':
+#ifndef NO_68851
+ case '|':
+#endif
+ switch (opP->mode)
+ {
+ case IMMED:
+ tmpreg = 0x3c; /* 7.4 */
+ if (strchr ("bwl", s[1]))
+ nextword = get_num (&opP->disp, 80);
+ else
+ nextword = get_num (&opP->disp, 0);
+ if (isvar (&opP->disp))
+ add_fix (s[1], &opP->disp, 0, 0);
+ switch (s[1])
+ {
+ case 'b':
+ if (!isbyte (nextword))
+ opP->error = "operand out of range";
+ addword (nextword);
+ baseo = 0;
+ break;
+ case 'w':
+ if (!isword (nextword))
+ opP->error = "operand out of range";
+ addword (nextword);
+ baseo = 0;
+ break;
+ case 'W':
+ if (!issword (nextword))
+ opP->error = "operand out of range";
+ addword (nextword);
+ baseo = 0;
+ break;
+ case 'l':
+ addword (nextword >> 16);
+ addword (nextword);
+ baseo = 0;
+ break;
+
+ case 'f':
+ baseo = 2;
+ outro = 8;
+ break;
+ case 'F':
+ baseo = 4;
+ outro = 11;
+ break;
+ case 'x':
+ baseo = 6;
+ outro = 15;
+ break;
+ case 'p':
+ baseo = 6;
+ outro = -1;
+ break;
+ default:
+ abort ();
+ }
+ if (!baseo)
+ break;
+
+ /* We gotta put out some float */
+ if (op (&opP->disp) != O_big)
+ {
+ valueT val;
+ int gencnt;
+
+ /* Can other cases happen here? */
+ if (op (&opP->disp) != O_constant)
+ abort ();
+
+ val = (valueT) offs (&opP->disp);
+ gencnt = 0;
+ do
+ {
+ generic_bignum[gencnt] = (LITTLENUM_TYPE) val;
+ val >>= LITTLENUM_NUMBER_OF_BITS;
+ ++gencnt;
+ }
+ while (val != 0);
+ offs (&opP->disp) = gencnt;
+ }
+ if (offs (&opP->disp) > 0)
+ {
+ if (offs (&opP->disp) > baseo)
+ {
+ as_warn ("Bignum too big for %c format; truncated",
+ s[1]);
+ offs (&opP->disp) = baseo;
+ }
+ baseo -= offs (&opP->disp);
+ while (baseo--)
+ addword (0);
+ for (wordp = generic_bignum + offs (&opP->disp) - 1;
+ offs (&opP->disp)--;
+ --wordp)
+ addword (*wordp);
+ break;
+ }
+ gen_to_words (words, baseo, (long) outro);
+ for (wordp = words; baseo--; wordp++)
+ addword (*wordp);
+ break;
+ case DREG:
+ tmpreg = opP->reg - DATA; /* 0.dreg */
+ break;
+ case AREG:
+ tmpreg = 0x08 + opP->reg - ADDR; /* 1.areg */
+ break;
+ case AINDR:
+ tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
+ break;
+ case ADEC:
+ tmpreg = 0x20 + opP->reg - ADDR; /* 4.areg */
+ break;
+ case AINC:
+ tmpreg = 0x18 + opP->reg - ADDR; /* 3.areg */
+ break;
+ case DISP:
+
+ nextword = get_num (&opP->disp, 80);
+
+ if (opP->reg == PC
+ && ! isvar (&opP->disp)
+ && m68k_abspcadd)
+ {
+ opP->disp.exp.X_op = O_symbol;
+#ifndef BFD_ASSEMBLER
+ opP->disp.exp.X_add_symbol = &abs_symbol;
+#else
+ opP->disp.exp.X_add_symbol =
+ section_symbol (absolute_section);
+#endif
+ }
+
+ /* Force into index mode. Hope this works */
+
+ /* We do the first bit for 32-bit displacements, and the
+ second bit for 16 bit ones. It is possible that we
+ should make the default be WORD instead of LONG, but
+ I think that'd break GCC, so we put up with a little
+ inefficiency for the sake of working output. */
+
+ if (!issword (nextword)
+ || (isvar (&opP->disp)
+ && ((opP->disp.size == SIZE_UNSPEC
+ && flag_short_refs == 0
+ && cpu_of_arch (current_architecture) >= m68020)
+ || opP->disp.size == SIZE_LONG)))
+ {
+ if (cpu_of_arch (current_architecture) < m68020)
+ opP->error =
+ "displacement too large for this architecture; needs 68020 or higher";
+ if (opP->reg == PC)
+ tmpreg = 0x3B; /* 7.3 */
+ else
+ tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
+ if (isvar (&opP->disp))
+ {
+ if (opP->reg == PC)
+ {
+ if (opP->disp.size == SIZE_LONG
+#ifdef OBJ_ELF
+ /* If the displacement needs pic
+ relocation it cannot be relaxed. */
+ || opP->disp.pic_reloc != pic_none
+#endif
+ )
+ {
+ addword (0x0170);
+ add_fix ('l', &opP->disp, 1, 2);
+ }
+ else
+ {
+ add_frag (adds (&opP->disp),
+ offs (&opP->disp),
+ TAB (PCLEA, SZ_UNDEF));
+ break;
+ }
+ }
+ else
+ {
+ addword (0x0170);
+ add_fix ('l', &opP->disp, 0, 0);
+ }
+ }
+ else
+ addword (0x0170);
+ addword (nextword >> 16);
+ }
+ else
+ {
+ if (opP->reg == PC)
+ tmpreg = 0x3A; /* 7.2 */
+ else
+ tmpreg = 0x28 + opP->reg - ADDR; /* 5.areg */
+
+ if (isvar (&opP->disp))
+ {
+ if (opP->reg == PC)
+ {
+ add_fix ('w', &opP->disp, 1, 0);
+ }
+ else
+ add_fix ('w', &opP->disp, 0, 0);
+ }
+ }
+ addword (nextword);
+ break;
+
+ case POST:
+ case PRE:
+ case BASE:
+ nextword = 0;
+ baseo = get_num (&opP->disp, 80);
+ if (opP->mode == POST || opP->mode == PRE)
+ outro = get_num (&opP->odisp, 80);
+ /* Figure out the `addressing mode'.
+ Also turn on the BASE_DISABLE bit, if needed. */
+ if (opP->reg == PC || opP->reg == ZPC)
+ {
+ tmpreg = 0x3b; /* 7.3 */
+ if (opP->reg == ZPC)
+ nextword |= 0x80;
+ }
+ else if (opP->reg == 0)
+ {
+ nextword |= 0x80;
+ tmpreg = 0x30; /* 6.garbage */
+ }
+ else if (opP->reg >= ZADDR0 && opP->reg <= ZADDR7)
+ {
+ nextword |= 0x80;
+ tmpreg = 0x30 + opP->reg - ZADDR0;
+ }
+ else
+ tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
+
+ siz1 = opP->disp.size;
+ if (opP->mode == POST || opP->mode == PRE)
+ siz2 = opP->odisp.size;
+ else
+ siz2 = SIZE_UNSPEC;
+
+ /* Index register stuff */
+ if (opP->index.reg != 0
+ && opP->index.reg >= DATA
+ && opP->index.reg <= ADDR7)
+ {
+ nextword |= (opP->index.reg - DATA) << 12;
+
+ if (opP->index.size == SIZE_UNSPEC
+ || opP->index.size == SIZE_LONG)
+ nextword |= 0x800;
+
+ if (cpu_of_arch (current_architecture) < m68020)
+ {
+ if (opP->index.scale != 1)
+ {
+ opP->error =
+ "scale factor invalid on this architecture; needs 68020 or higher";
+ }
+ }
+
+ switch (opP->index.scale)
+ {
+ case 1:
+ break;
+ case 2:
+ nextword |= 0x200;
+ break;
+ case 4:
+ nextword |= 0x400;
+ break;
+ case 8:
+ nextword |= 0x600;
+ break;
+ default:
+ abort ();
+ }
+ /* IF its simple,
+ GET US OUT OF HERE! */
+
+ /* Must be INDEX, with an index register. Address
+ register cannot be ZERO-PC, and either :b was
+ forced, or we know it will fit. For a 68000 or
+ 68010, force this mode anyways, because the
+ larger modes aren't supported. */
+ if (opP->mode == BASE
+ && ((opP->reg >= ADDR0
+ && opP->reg <= ADDR7)
+ || opP->reg == PC))
+ {
+ if (siz1 == SIZE_BYTE
+ || cpu_of_arch (current_architecture) < m68020
+ || (siz1 == SIZE_UNSPEC
+ && ! isvar (&opP->disp)
+ && issbyte (baseo)))
+ {
+ nextword += baseo & 0xff;
+ addword (nextword);
+ if (isvar (&opP->disp))
+ {
+ /* Do a byte relocation. If it doesn't
+ fit (possible on m68000) let the
+ fixup processing complain later. */
+ if (opP->reg == PC)
+ add_fix ('B', &opP->disp, 1, 1);
+ else
+ add_fix ('B', &opP->disp, 0, 0);
+ }
+ else if (siz1 != SIZE_BYTE)
+ {
+ if (siz1 != SIZE_UNSPEC)
+ as_warn ("Forcing byte displacement");
+ if (! issbyte (baseo))
+ opP->error = "byte displacement out of range";
+ }
+
+ break;
+ }
+ else if (siz1 == SIZE_UNSPEC
+ && opP->reg == PC
+ && isvar (&opP->disp)
+ && subs (&opP->disp) == NULL
+#ifdef OBJ_ELF
+ /* If the displacement needs pic
+ relocation it cannot be relaxed. */
+ && opP->disp.pic_reloc == pic_none
+#endif
+ )
+ {
+ nextword += baseo & 0xff;
+ addword (nextword);
+ add_frag (adds (&opP->disp), offs (&opP->disp),
+ TAB (PCINDEX, SZ_UNDEF));
+
+ break;
+ }
+ }
+ }
+ else
+ {
+ nextword |= 0x40; /* No index reg */
+ if (opP->index.reg >= ZDATA0
+ && opP->index.reg <= ZDATA7)
+ nextword |= (opP->index.reg - ZDATA0) << 12;
+ else if (opP->index.reg >= ZADDR0
+ || opP->index.reg <= ZADDR7)
+ nextword |= (opP->index.reg - ZADDR0 + 8) << 12;
+ }
+
+ /* It isn't simple. */
+
+ if (cpu_of_arch (current_architecture) < m68020)
+ opP->error =
+ "invalid operand mode for this architecture; needs 68020 or higher";
+
+ nextword |= 0x100;
+ /* If the guy specified a width, we assume that it is
+ wide enough. Maybe it isn't. If so, we lose. */
+ switch (siz1)
+ {
+ case SIZE_UNSPEC:
+ if (isvar (&opP->disp)
+ ? m68k_rel32
+ : ! issword (baseo))
+ {
+ siz1 = SIZE_LONG;
+ nextword |= 0x30;
+ }
+ else if (! isvar (&opP->disp) && baseo == 0)
+ nextword |= 0x10;
+ else
+ {
+ nextword |= 0x20;
+ siz1 = SIZE_WORD;
+ }
+ break;
+ case SIZE_BYTE:
+ as_warn (":b not permitted; defaulting to :w");
+ /* Fall through. */
+ case SIZE_WORD:
+ nextword |= 0x20;
+ break;
+ case SIZE_LONG:
+ nextword |= 0x30;
+ break;
+ }
+
+ /* Figure out innner displacement stuff */
+ if (opP->mode == POST || opP->mode == PRE)
+ {
+ switch (siz2)
+ {
+ case SIZE_UNSPEC:
+ if (isvar (&opP->odisp)
+ ? m68k_rel32
+ : ! issword (outro))
+ {
+ siz2 = SIZE_LONG;
+ nextword |= 0x3;
+ }
+ else if (! isvar (&opP->odisp) && outro == 0)
+ nextword |= 0x1;
+ else
+ {
+ nextword |= 0x2;
+ siz2 = SIZE_WORD;
+ }
+ break;
+ case 1:
+ as_warn (":b not permitted; defaulting to :w");
+ /* Fall through. */
+ case 2:
+ nextword |= 0x2;
+ break;
+ case 3:
+ nextword |= 0x3;
+ break;
+ }
+ if (opP->mode == POST
+ && (nextword & 0x40) == 0)
+ nextword |= 0x04;
+ }
+ addword (nextword);
+
+ if (siz1 != SIZE_UNSPEC && isvar (&opP->disp))
+ {
+ if (opP->reg == PC || opP->reg == ZPC)
+ add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 1, 2);
+ else
+ add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 0, 0);
+ }
+ if (siz1 == SIZE_LONG)
+ addword (baseo >> 16);
+ if (siz1 != SIZE_UNSPEC)
+ addword (baseo);
+
+ if (siz2 != SIZE_UNSPEC && isvar (&opP->odisp))
+ add_fix (siz2 == SIZE_LONG ? 'l' : 'w', &opP->odisp, 0, 0);
+ if (siz2 == SIZE_LONG)
+ addword (outro >> 16);
+ if (siz2 != SIZE_UNSPEC)
+ addword (outro);
+
+ break;
+
+ case ABSL:
+ nextword = get_num (&opP->disp, 80);
+ switch (opP->disp.size)
+ {
+ default:
+ abort ();
+ case SIZE_UNSPEC:
+ if (!isvar (&opP->disp) && issword (offs (&opP->disp)))
+ {
+ tmpreg = 0x38; /* 7.0 */
+ addword (nextword);
+ break;
+ }
+ /* Don't generate pc relative code on 68010 and
+ 68000. */
+ if (isvar (&opP->disp)
+ && !subs (&opP->disp)
+ && adds (&opP->disp)
+#ifdef OBJ_ELF
+ /* If the displacement needs pic relocation it
+ cannot be relaxed. */
+ && opP->disp.pic_reloc == pic_none
+#endif
+ && S_GET_SEGMENT (adds (&opP->disp)) == now_seg
+ && cpu_of_arch (current_architecture) >= m68020
+ && !flag_long_jumps
+ && !strchr ("~%&$?", s[0]))
+ {
+ tmpreg = 0x3A; /* 7.2 */
+ add_frag (adds (&opP->disp),
+ offs (&opP->disp),
+ TAB (PCREL, SZ_UNDEF));
+ break;
+ }
+ /* Fall through into long */
+ case SIZE_LONG:
+ if (isvar (&opP->disp))
+ add_fix ('l', &opP->disp, 0, 0);
+
+ tmpreg = 0x39;/* 7.1 mode */
+ addword (nextword >> 16);
+ addword (nextword);
+ break;
+
+ case SIZE_WORD: /* Word */
+ if (isvar (&opP->disp))
+ add_fix ('w', &opP->disp, 0, 0);
+
+ tmpreg = 0x38;/* 7.0 mode */
+ addword (nextword);
+ break;
+ }
+ break;
+ case CONTROL:
+ case FPREG:
+ default:
+ as_bad ("unknown/incorrect operand");
+ /* abort(); */
+ }
+ install_gen_operand (s[1], tmpreg);
+ break;
+
+ case '#':
+ case '^':
+ switch (s[1])
+ { /* JF: I hate floating point! */
+ case 'j':
+ tmpreg = 70;
+ break;
+ case '8':
+ tmpreg = 20;
+ break;
+ case 'C':
+ tmpreg = 50;
+ break;
+ case '3':
+ default:
+ tmpreg = 80;
+ break;
+ }
+ tmpreg = get_num (&opP->disp, tmpreg);
+ if (isvar (&opP->disp))
+ add_fix (s[1], &opP->disp, 0, 0);
+ switch (s[1])
+ {
+ case 'b': /* Danger: These do no check for
+ certain types of overflow.
+ user beware! */
+ if (!isbyte (tmpreg))
+ opP->error = "out of range";
+ insop (tmpreg, opcode);
+ if (isvar (&opP->disp))
+ the_ins.reloc[the_ins.nrel - 1].n =
+ (opcode->m_codenum) * 2 + 1;
+ break;
+ case 'w':
+ if (!isword (tmpreg))
+ opP->error = "out of range";
+ insop (tmpreg, opcode);
+ if (isvar (&opP->disp))
+ the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
+ break;
+ case 'W':
+ if (!issword (tmpreg))
+ opP->error = "out of range";
+ insop (tmpreg, opcode);
+ if (isvar (&opP->disp))
+ the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
+ break;
+ case 'l':
+ /* Because of the way insop works, we put these two out
+ backwards. */
+ insop (tmpreg, opcode);
+ insop (tmpreg >> 16, opcode);
+ if (isvar (&opP->disp))
+ the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
+ break;
+ case '3':
+ tmpreg &= 0xFF;
+ case '8':
+ case 'C':
+ install_operand (s[1], tmpreg);
+ break;
+ default:
+ abort ();
+ }
+ break;
+
+ case '+':
+ case '-':
+ case 'A':
+ case 'a':
+ install_operand (s[1], opP->reg - ADDR);
+ break;
+
+ case 'B':
+ tmpreg = get_num (&opP->disp, 80);
+ switch (s[1])
+ {
+ case 'B':
+ /* The pc_fix argument winds up in fx_pcrel_adjust,
+ which is a char, and may therefore be unsigned. We
+ want to pass -1, but we pass 64 instead, and convert
+ back in md_pcrel_from. */
+ add_fix ('B', &opP->disp, 1, 64);
+ break;
+ case 'W':
+ add_fix ('w', &opP->disp, 1, 0);
+ addword (0);
+ break;
+ case 'L':
+ long_branch:
+ if (cpu_of_arch (current_architecture) < m68020)
+ as_warn ("Can't use long branches on 68000/68010");
+ the_ins.opcode[the_ins.numo - 1] |= 0xff;
+ add_fix ('l', &opP->disp, 1, 0);
+ addword (0);
+ addword (0);
+ break;
+ case 'g':
+ if (subs (&opP->disp)) /* We can't relax it */
+ goto long_branch;
+
+#ifdef OBJ_ELF
+ /* If the displacement needs pic relocation it cannot be
+ relaxed. */
+ if (opP->disp.pic_reloc != pic_none)
+ goto long_branch;
+#endif
+
+ /* This could either be a symbol, or an absolute
+ address. No matter, the frag hacking will finger it
+ out. Not quite: it can't switch from BRANCH to
+ BCC68000 for the case where opnd is absolute (it
+ needs to use the 68000 hack since no conditional abs
+ jumps). */
+ if (((cpu_of_arch (current_architecture) < m68020)
+ || (0 == adds (&opP->disp)))
+ && (the_ins.opcode[0] >= 0x6200)
+ && (the_ins.opcode[0] <= 0x6f00))
+ add_frag (adds (&opP->disp), offs (&opP->disp),
+ TAB (BCC68000, SZ_UNDEF));
+ else
+ add_frag (adds (&opP->disp), offs (&opP->disp),
+ TAB (ABRANCH, SZ_UNDEF));
+ break;
+ case 'w':
+ if (isvar (&opP->disp))
+ {
+#if 1
+ /* check for DBcc instruction */
+ if ((the_ins.opcode[0] & 0xf0f8) == 0x50c8)
+ {
+ /* size varies if patch */
+ /* needed for long form */
+ add_frag (adds (&opP->disp), offs (&opP->disp),
+ TAB (DBCC, SZ_UNDEF));
+ break;
+ }
+#endif
+ add_fix ('w', &opP->disp, 1, 0);
+ }
+ addword (0);
+ break;
+ case 'C': /* Fixed size LONG coproc branches */
+ add_fix ('l', &opP->disp, 1, 0);
+ addword (0);
+ addword (0);
+ break;
+ case 'c': /* Var size Coprocesssor branches */
+ if (subs (&opP->disp))
+ {
+ add_fix ('l', &opP->disp, 1, 0);
+ add_frag ((symbolS *) 0, (long) 0, TAB (FBRANCH, LONG));
+ }
+ else if (adds (&opP->disp))
+ add_frag (adds (&opP->disp), offs (&opP->disp),
+ TAB (FBRANCH, SZ_UNDEF));
+ else
+ {
+ /* add_frag((symbolS *) 0, offs(&opP->disp),
+ TAB(FBRANCH,SHORT)); */
+ the_ins.opcode[the_ins.numo - 1] |= 0x40;
+ add_fix ('l', &opP->disp, 1, 0);
+ addword (0);
+ addword (0);
+ }
+ break;
+ default:
+ abort ();
+ }
+ break;
+
+ case 'C': /* Ignore it */
+ break;
+
+ case 'd': /* JF this is a kludge */
+ install_operand ('s', opP->reg - ADDR);
+ tmpreg = get_num (&opP->disp, 80);
+ if (!issword (tmpreg))
+ {
+ as_warn ("Expression out of range, using 0");
+ tmpreg = 0;
+ }
+ addword (tmpreg);
+ break;
+
+ case 'D':
+ install_operand (s[1], opP->reg - DATA);
+ break;
+
+ case 'F':
+ install_operand (s[1], opP->reg - FP0);
+ break;
+
+ case 'I':
+ tmpreg = opP->reg - COP0;
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'J': /* JF foo */
+ switch (opP->reg)
+ {
+ case SFC:
+ tmpreg = 0x000;
+ break;
+ case DFC:
+ tmpreg = 0x001;
+ break;
+ case CACR:
+ tmpreg = 0x002;
+ break;
+ case TC:
+ tmpreg = 0x003;
+ break;
+ case ITT0:
+ tmpreg = 0x004;
+ break;
+ case ITT1:
+ tmpreg = 0x005;
+ break;
+ case DTT0:
+ tmpreg = 0x006;
+ break;
+ case DTT1:
+ tmpreg = 0x007;
+ break;
+ case BUSCR:
+ tmpreg = 0x008;
+ break;
+
+ case USP:
+ tmpreg = 0x800;
+ break;
+ case VBR:
+ tmpreg = 0x801;
+ break;
+ case CAAR:
+ tmpreg = 0x802;
+ break;
+ case MSP:
+ tmpreg = 0x803;
+ break;
+ case ISP:
+ tmpreg = 0x804;
+ break;
+ case MMUSR:
+ tmpreg = 0x805;
+ break;
+ case URP:
+ tmpreg = 0x806;
+ break;
+ case SRP:
+ tmpreg = 0x807;
+ break;
+ case PCR:
+ tmpreg = 0x808;
+ break;
+ default:
+ abort ();
+ }
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'k':
+ tmpreg = get_num (&opP->disp, 55);
+ install_operand (s[1], tmpreg & 0x7f);
+ break;
+
+ case 'l':
+ tmpreg = opP->mask;
+ if (s[1] == 'w')
+ {
+ if (tmpreg & 0x7FF0000)
+ as_bad ("Floating point register in register list");
+ insop (reverse_16_bits (tmpreg), opcode);
+ }
+ else
+ {
+ if (tmpreg & 0x700FFFF)
+ as_bad ("Wrong register in floating-point reglist");
+ install_operand (s[1], reverse_8_bits (tmpreg >> 16));
+ }
+ break;
+
+ case 'L':
+ tmpreg = opP->mask;
+ if (s[1] == 'w')
+ {
+ if (tmpreg & 0x7FF0000)
+ as_bad ("Floating point register in register list");
+ insop (tmpreg, opcode);
+ }
+ else if (s[1] == '8')
+ {
+ if (tmpreg & 0x0FFFFFF)
+ as_bad ("incorrect register in reglist");
+ install_operand (s[1], tmpreg >> 24);
+ }
+ else
+ {
+ if (tmpreg & 0x700FFFF)
+ as_bad ("wrong register in floating-point reglist");
+ else
+ install_operand (s[1], tmpreg >> 16);
+ }
+ break;
+
+ case 'M':
+ install_operand (s[1], get_num (&opP->disp, 60));
+ break;
+
+ case 'O':
+ tmpreg = ((opP->mode == DREG)
+ ? 0x20 + opP->reg - DATA
+ : (get_num (&opP->disp, 40) & 0x1F));
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'Q':
+ tmpreg = get_num (&opP->disp, 10);
+ if (tmpreg == 8)
+ tmpreg = 0;
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'R':
+ /* This depends on the fact that ADDR registers are eight
+ more than their corresponding DATA regs, so the result
+ will have the ADDR_REG bit set */
+ install_operand (s[1], opP->reg - DATA);
+ break;
+
+ case 'r':
+ if (opP->mode == AINDR)
+ install_operand (s[1], opP->reg - DATA);
+ else
+ install_operand (s[1], opP->index.reg - DATA);
+ break;
+
+ case 's':
+ if (opP->reg == FPI)
+ tmpreg = 0x1;
+ else if (opP->reg == FPS)
+ tmpreg = 0x2;
+ else if (opP->reg == FPC)
+ tmpreg = 0x4;
+ else
+ abort ();
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'S': /* Ignore it */
+ break;
+
+ case 'T':
+ install_operand (s[1], get_num (&opP->disp, 30));
+ break;
+
+ case 'U': /* Ignore it */
+ break;
+
+ case 'c':
+ switch (opP->reg)
+ {
+ case NC:
+ tmpreg = 0;
+ break;
+ case DC:
+ tmpreg = 1;
+ break;
+ case IC:
+ tmpreg = 2;
+ break;
+ case BC:
+ tmpreg = 3;
+ break;
+ default:
+ as_fatal ("failed sanity check");
+ } /* switch on cache token */
+ install_operand (s[1], tmpreg);
+ break;
+#ifndef NO_68851
+ /* JF: These are out of order, I fear. */
+ case 'f':
+ switch (opP->reg)
+ {
+ case SFC:
+ tmpreg = 0;
+ break;
+ case DFC:
+ tmpreg = 1;
+ break;
+ default:
+ abort ();
+ }
+ install_operand (s[1], tmpreg);
+ break;
+
+ case '0':
+ case '1':
+ case '2':
+ switch (opP->reg)
+ {
+ case TC:
+ tmpreg = 0;
+ break;
+ case CAL:
+ tmpreg = 4;
+ break;
+ case VAL:
+ tmpreg = 5;
+ break;
+ case SCC:
+ tmpreg = 6;
+ break;
+ case AC:
+ tmpreg = 7;
+ break;
+ default:
+ abort ();
+ }
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'V':
+ if (opP->reg == VAL)
+ break;
+ abort ();
+
+ case 'W':
+ switch (opP->reg)
+ {
+ case DRP:
+ tmpreg = 1;
+ break;
+ case SRP:
+ tmpreg = 2;
+ break;
+ case CRP:
+ tmpreg = 3;
+ break;
+ default:
+ abort ();
+ }
+ install_operand (s[1], tmpreg);
+ break;
+
+ case 'X':
+ switch (opP->reg)
+ {
+ case BAD:
+ case BAD + 1:
+ case BAD + 2:
+ case BAD + 3:
+ case BAD + 4:
+ case BAD + 5:
+ case BAD + 6:
+ case BAD + 7:
+ tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
+ break;
+
+ case BAC:
+ case BAC + 1:
+ case BAC + 2:
+ case BAC + 3:
+ case BAC + 4:
+ case BAC + 5:
+ case BAC + 6:
+ case BAC + 7:
+ tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
+ break;
+
+ default:
+ abort ();
+ }
+ install_operand (s[1], tmpreg);
+ break;
+ case 'Y':
+ know (opP->reg == PSR);
+ break;
+ case 'Z':
+ know (opP->reg == PCSR);
+ break;
+#endif /* m68851 */
+ case '3':
+ switch (opP->reg)
+ {
+ case TT0:
+ tmpreg = 2;
+ break;
+ case TT1:
+ tmpreg = 3;
+ break;
+ default:
+ abort ();
+ }
+ install_operand (s[1], tmpreg);
+ break;
+ case 't':
+ tmpreg = get_num (&opP->disp, 20);
+ install_operand (s[1], tmpreg);
+ break;
+ case '_': /* used only for move16 absolute 32-bit address */
+ tmpreg = get_num (&opP->disp, 80);
+ addword (tmpreg >> 16);
+ addword (tmpreg & 0xFFFF);
+ break;
+ default:
+ abort ();
+ }
+ }
+
+ /* By the time whe get here (FINALLY) the_ins contains the complete
+ instruction, ready to be emitted. . . */
+}
+
+static int
+reverse_16_bits (in)
+ int in;
+{
+ int out = 0;
+ int n;
+
+ static int mask[16] =
+ {
+ 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
+ 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
+ };
+ for (n = 0; n < 16; n++)
+ {
+ if (in & mask[n])
+ out |= mask[15 - n];
+ }
+ return out;
+} /* reverse_16_bits() */
+
+static int
+reverse_8_bits (in)
+ int in;
+{
+ int out = 0;
+ int n;
+
+ static int mask[8] =
+ {
+ 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
+ };
+
+ for (n = 0; n < 8; n++)
+ {
+ if (in & mask[n])
+ out |= mask[7 - n];
+ }
+ return out;
+} /* reverse_8_bits() */
+
+/* Cause an extra frag to be generated here, inserting up to 10 bytes
+ (that value is chosen in the frag_var call in md_assemble). TYPE
+ is the subtype of the frag to be generated; its primary type is
+ rs_machine_dependent.
+
+ The TYPE parameter is also used by md_convert_frag_1 and
+ md_estimate_size_before_relax. The appropriate type of fixup will
+ be emitted by md_convert_frag_1.
+
+ ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
+static void
+install_operand (mode, val)
+ int mode;
+ int val;
+{
+ switch (mode)
+ {
+ case 's':
+ the_ins.opcode[0] |= val & 0xFF; /* JF FF is for M kludge */
+ break;
+ case 'd':
+ the_ins.opcode[0] |= val << 9;
+ break;
+ case '1':
+ the_ins.opcode[1] |= val << 12;
+ break;
+ case '2':
+ the_ins.opcode[1] |= val << 6;
+ break;
+ case '3':
+ the_ins.opcode[1] |= val;
+ break;
+ case '4':
+ the_ins.opcode[2] |= val << 12;
+ break;
+ case '5':
+ the_ins.opcode[2] |= val << 6;
+ break;
+ case '6':
+ /* DANGER! This is a hack to force cas2l and cas2w cmds to be
+ three words long! */
+ the_ins.numo++;
+ the_ins.opcode[2] |= val;
+ break;
+ case '7':
+ the_ins.opcode[1] |= val << 7;
+ break;
+ case '8':
+ the_ins.opcode[1] |= val << 10;
+ break;
+#ifndef NO_68851
+ case '9':
+ the_ins.opcode[1] |= val << 5;
+ break;
+#endif
+
+ case 't':
+ the_ins.opcode[1] |= (val << 10) | (val << 7);
+ break;
+ case 'D':
+ the_ins.opcode[1] |= (val << 12) | val;
+ break;
+ case 'g':
+ the_ins.opcode[0] |= val = 0xff;
+ break;
+ case 'i':
+ the_ins.opcode[0] |= val << 9;
+ break;
+ case 'C':
+ the_ins.opcode[1] |= val;
+ break;
+ case 'j':
+ the_ins.opcode[1] |= val;
+ the_ins.numo++; /* What a hack */
+ break;
+ case 'k':
+ the_ins.opcode[1] |= val << 4;
+ break;
+ case 'b':
+ case 'w':
+ case 'W':
+ case 'l':
+ break;
+ case 'e':
+ the_ins.opcode[0] |= (val << 6);
+ break;
+ case 'L':
+ the_ins.opcode[1] = (val >> 16);
+ the_ins.opcode[2] = val & 0xffff;
+ break;
+ case 'c':
+ default:
+ as_fatal ("failed sanity check.");
+ }
+} /* install_operand() */
+
+static void
+install_gen_operand (mode, val)
+ int mode;
+ int val;
+{
+ switch (mode)
+ {
+ case 's':
+ the_ins.opcode[0] |= val;
+ break;
+ case 'd':
+ /* This is a kludge!!! */
+ the_ins.opcode[0] |= (val & 0x07) << 9 | (val & 0x38) << 3;
+ break;
+ case 'b':
+ case 'w':
+ case 'l':
+ case 'f':
+ case 'F':
+ case 'x':
+ case 'p':
+ the_ins.opcode[0] |= val;
+ break;
+ /* more stuff goes here */
+ default:
+ as_fatal ("failed sanity check.");
+ }
+} /* install_gen_operand() */
+
+/*
+ * verify that we have some number of paren pairs, do m68k_ip_op(), and
+ * then deal with the bitfield hack.
+ */
+
+static char *
+crack_operand (str, opP)
+ register char *str;
+ register struct m68k_op *opP;
+{
+ register int parens;
+ register int c;
+ register char *beg_str;
+ int inquote = 0;
+
+ if (!str)
+ {
+ return str;
+ }
+ beg_str = str;
+ for (parens = 0; *str && (parens > 0 || inquote || notend (str)); str++)
+ {
+ if (! inquote)
+ {
+ if (*str == '(')
+ parens++;
+ else if (*str == ')')
+ {
+ if (!parens)
+ { /* ERROR */
+ opP->error = "Extra )";
+ return str;
+ }
+ --parens;
+ }
+ }
+ if (flag_mri && *str == '\'')
+ inquote = ! inquote;
+ }
+ if (!*str && parens)
+ { /* ERROR */
+ opP->error = "Missing )";
+ return str;
+ }
+ c = *str;
+ *str = '\0';
+ if (m68k_ip_op (beg_str, opP) != 0)
+ {
+ *str = c;
+ return str;
+ }
+ *str = c;
+ if (c == '}')
+ c = *++str; /* JF bitfield hack */
+ if (c)
+ {
+ c = *++str;
+ if (!c)
+ as_bad ("Missing operand");
+ }
+ return str;
+}
+
+/* This is the guts of the machine-dependent assembler. STR points to a
+ machine dependent instruction. This function is supposed to emit
+ the frags/bytes it assembles to.
+ */
+
+void
+insert_reg (regname, regnum)
+ char *regname;
+ int regnum;
+{
+ char buf[100];
+ int i;
+
+#ifdef REGISTER_PREFIX
+ if (!flag_reg_prefix_optional)
+ {
+ buf[0] = REGISTER_PREFIX;
+ strcpy (buf + 1, regname);
+ regname = buf;
+ }
+#endif
+
+ symbol_table_insert (symbol_new (regname, reg_section, regnum,
+ &zero_address_frag));
+
+ for (i = 0; regname[i]; i++)
+ buf[i] = islower (regname[i]) ? toupper (regname[i]) : regname[i];
+ buf[i] = '\0';
+
+ symbol_table_insert (symbol_new (buf, reg_section, regnum,
+ &zero_address_frag));
+}
+
+struct init_entry
+ {
+ const char *name;
+ int number;
+ };
+
+static const struct init_entry init_table[] =
+{
+ { "d0", DATA0 },
+ { "d1", DATA1 },
+ { "d2", DATA2 },
+ { "d3", DATA3 },
+ { "d4", DATA4 },
+ { "d5", DATA5 },
+ { "d6", DATA6 },
+ { "d7", DATA7 },
+ { "a0", ADDR0 },
+ { "a1", ADDR1 },
+ { "a2", ADDR2 },
+ { "a3", ADDR3 },
+ { "a4", ADDR4 },
+ { "a5", ADDR5 },
+ { "a6", ADDR6 },
+ { "fp", ADDR6 },
+ { "a7", ADDR7 },
+ { "sp", ADDR7 },
+ { "ssp", ADDR7 },
+ { "fp0", FP0 },
+ { "fp1", FP1 },
+ { "fp2", FP2 },
+ { "fp3", FP3 },
+ { "fp4", FP4 },
+ { "fp5", FP5 },
+ { "fp6", FP6 },
+ { "fp7", FP7 },
+ { "fpi", FPI },
+ { "fpiar", FPI },
+ { "fpc", FPI },
+ { "fps", FPS },
+ { "fpsr", FPS },
+ { "fpc", FPC },
+ { "fpcr", FPC },
+ { "control", FPC },
+ { "status", FPS },
+ { "iaddr", FPI },
+
+ { "cop0", COP0 },
+ { "cop1", COP1 },
+ { "cop2", COP2 },
+ { "cop3", COP3 },
+ { "cop4", COP4 },
+ { "cop5", COP5 },
+ { "cop6", COP6 },
+ { "cop7", COP7 },
+ { "pc", PC },
+ { "zpc", ZPC },
+ { "sr", SR },
+
+ { "ccr", CCR },
+ { "cc", CCR },
+
+ { "usp", USP },
+ { "isp", ISP },
+ { "sfc", SFC },
+ { "sfcr", SFC },
+ { "dfc", DFC },
+ { "dfcr", DFC },
+ { "cacr", CACR },
+ { "caar", CAAR },
+
+ { "vbr", VBR },
+
+ { "msp", MSP },
+ { "itt0", ITT0 },
+ { "itt1", ITT1 },
+ { "dtt0", DTT0 },
+ { "dtt1", DTT1 },
+ { "mmusr", MMUSR },
+ { "tc", TC },
+ { "srp", SRP },
+ { "urp", URP },
+ { "buscr", BUSCR },
+ { "pcr", PCR },
+
+ { "ac", AC },
+ { "bc", BC },
+ { "cal", CAL },
+ { "crp", CRP },
+ { "drp", DRP },
+ { "pcsr", PCSR },
+ { "psr", PSR },
+ { "scc", SCC },
+ { "val", VAL },
+ { "bad0", BAD0 },
+ { "bad1", BAD1 },
+ { "bad2", BAD2 },
+ { "bad3", BAD3 },
+ { "bad4", BAD4 },
+ { "bad5", BAD5 },
+ { "bad6", BAD6 },
+ { "bad7", BAD7 },
+ { "bac0", BAC0 },
+ { "bac1", BAC1 },
+ { "bac2", BAC2 },
+ { "bac3", BAC3 },
+ { "bac4", BAC4 },
+ { "bac5", BAC5 },
+ { "bac6", BAC6 },
+ { "bac7", BAC7 },
+
+ { "ic", IC },
+ { "dc", DC },
+ { "nc", NC },
+
+ { "tt0", TT0 },
+ { "tt1", TT1 },
+ /* 68ec030 versions of same */
+ { "ac0", TT0 },
+ { "ac1", TT1 },
+ /* 68ec030 access control unit, identical to 030 MMU status reg */
+ { "acusr", PSR },
+
+ /* Suppressed data and address registers. */
+ { "zd0", ZDATA0 },
+ { "zd1", ZDATA1 },
+ { "zd2", ZDATA2 },
+ { "zd3", ZDATA3 },
+ { "zd4", ZDATA4 },
+ { "zd5", ZDATA5 },
+ { "zd6", ZDATA6 },
+ { "zd7", ZDATA7 },
+ { "za0", ZADDR0 },
+ { "za1", ZADDR1 },
+ { "za2", ZADDR2 },
+ { "za3", ZADDR3 },
+ { "za4", ZADDR4 },
+ { "za5", ZADDR5 },
+ { "za6", ZADDR6 },
+ { "za7", ZADDR7 },
+
+ { 0, 0 }
+};
+
+void
+init_regtable ()
+{
+ int i;
+ for (i = 0; init_table[i].name; i++)
+ insert_reg (init_table[i].name, init_table[i].number);
+}
+
+static int no_68851, no_68881;
+
+#ifdef OBJ_AOUT
+/* a.out machine type. Default to 68020. */
+int m68k_aout_machtype = 2;
+#endif
+
+void
+md_assemble (str)
+ char *str;
+{
+ const char *er;
+ short *fromP;
+ char *toP = NULL;
+ int m, n = 0;
+ char *to_beg_P;
+ int shorts_this_frag;
+ fixS *fixP;
+
+ /* In MRI mode, the instruction and operands are separated by a
+ space. Anything following the operands is a comment. The label
+ has already been removed. */
+ if (flag_mri)
+ {
+ char *s;
+ int fields = 0;
+ int infield = 0;
+ int inquote = 0;
+
+ for (s = str; *s != '\0'; s++)
+ {
+ if ((*s == ' ' || *s == '\t') && ! inquote)
+ {
+ if (infield)
+ {
+ ++fields;
+ if (fields >= 2)
+ {
+ *s = '\0';
+ break;
+ }
+ infield = 0;
+ }
+ }
+ else
+ {
+ if (! infield)
+ infield = 1;
+ if (*s == '\'')
+ inquote = ! inquote;
+ }
+ }
+ }
+
+ memset ((char *) (&the_ins), '\0', sizeof (the_ins));
+ m68k_ip (str);
+ er = the_ins.error;
+ if (!er)
+ {
+ for (n = 0; n < the_ins.numargs; n++)
+ if (the_ins.operands[n].error)
+ {
+ er = the_ins.operands[n].error;
+ break;
+ }
+ }
+ if (er)
+ {
+ as_bad ("%s -- statement `%s' ignored", er, str);
+ return;
+ }
+
+ if (the_ins.nfrag == 0)
+ {
+ /* No frag hacking involved; just put it out */
+ toP = frag_more (2 * the_ins.numo);
+ fromP = &the_ins.opcode[0];
+ for (m = the_ins.numo; m; --m)
+ {
+ md_number_to_chars (toP, (long) (*fromP), 2);
+ toP += 2;
+ fromP++;
+ }
+ /* put out symbol-dependent info */
+ for (m = 0; m < the_ins.nrel; m++)
+ {
+ switch (the_ins.reloc[m].wid)
+ {
+ case 'B':
+ n = 1;
+ break;
+ case 'b':
+ n = 1;
+ break;
+ case '3':
+ n = 2;
+ break;
+ case 'w':
+ n = 2;
+ break;
+ case 'l':
+ n = 4;
+ break;
+ default:
+ as_fatal ("Don't know how to figure width of %c in md_assemble()",
+ the_ins.reloc[m].wid);
+ }
+
+ fixP = fix_new_exp (frag_now,
+ ((toP - frag_now->fr_literal)
+ - the_ins.numo * 2 + the_ins.reloc[m].n),
+ n,
+ &the_ins.reloc[m].exp,
+ the_ins.reloc[m].pcrel,
+ get_reloc_code (n, the_ins.reloc[m].pcrel,
+ the_ins.reloc[m].pic_reloc));
+ fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
+ }
+ return;
+ }
+
+ /* There's some frag hacking */
+ for (n = 0, fromP = &the_ins.opcode[0]; n < the_ins.nfrag; n++)
+ {
+ int wid;
+
+ if (n == 0)
+ wid = 2 * the_ins.fragb[n].fragoff;
+ else
+ wid = 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
+ toP = frag_more (wid);
+ to_beg_P = toP;
+ shorts_this_frag = 0;
+ for (m = wid / 2; m; --m)
+ {
+ md_number_to_chars (toP, (long) (*fromP), 2);
+ toP += 2;
+ fromP++;
+ shorts_this_frag++;
+ }
+ for (m = 0; m < the_ins.nrel; m++)
+ {
+ if ((the_ins.reloc[m].n) >= 2 * shorts_this_frag)
+ {
+ the_ins.reloc[m].n -= 2 * shorts_this_frag;
+ break;
+ }
+ wid = the_ins.reloc[m].wid;
+ if (wid == 0)
+ continue;
+ the_ins.reloc[m].wid = 0;
+ wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
+
+ fixP = fix_new_exp (frag_now,
+ ((toP - frag_now->fr_literal)
+ - the_ins.numo * 2 + the_ins.reloc[m].n),
+ wid,
+ &the_ins.reloc[m].exp,
+ the_ins.reloc[m].pcrel,
+ get_reloc_code (wid, the_ins.reloc[m].pcrel,
+ the_ins.reloc[m].pic_reloc));
+ fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
+ }
+ (void) frag_var (rs_machine_dependent, 10, 0,
+ (relax_substateT) (the_ins.fragb[n].fragty),
+ the_ins.fragb[n].fadd, the_ins.fragb[n].foff, to_beg_P);
+ }
+ n = (the_ins.numo - the_ins.fragb[n - 1].fragoff);
+ shorts_this_frag = 0;
+ if (n)
+ {
+ toP = frag_more (n * sizeof (short));
+ while (n--)
+ {
+ md_number_to_chars (toP, (long) (*fromP), 2);
+ toP += 2;
+ fromP++;
+ shorts_this_frag++;
+ }
+ }
+ for (m = 0; m < the_ins.nrel; m++)
+ {
+ int wid;
+
+ wid = the_ins.reloc[m].wid;
+ if (wid == 0)
+ continue;
+ the_ins.reloc[m].wid = 0;
+ wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
+
+ fixP = fix_new_exp (frag_now,
+ ((the_ins.reloc[m].n + toP - frag_now->fr_literal)
+ - shorts_this_frag * 2),
+ wid,
+ &the_ins.reloc[m].exp,
+ the_ins.reloc[m].pcrel,
+ get_reloc_code (wid, the_ins.reloc[m].pcrel,
+ the_ins.reloc[m].pic_reloc));
+ fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
+ }
+}
+
+void
+md_begin ()
+{
+ /*
+ * md_begin -- set up hash tables with 68000 instructions.
+ * similar to what the vax assembler does. ---phr
+ */
+ /* RMS claims the thing to do is take the m68k-opcode.h table, and make
+ a copy of it at runtime, adding in the information we want but isn't
+ there. I think it'd be better to have an awk script hack the table
+ at compile time. Or even just xstr the table and use it as-is. But
+ my lord ghod hath spoken, so we do it this way. Excuse the ugly var
+ names. */
+
+ register const struct m68k_opcode *ins;
+ register struct m68k_incant *hack, *slak;
+ register const char *retval = 0; /* empty string, or error msg text */
+ register unsigned int i;
+ register char c;
+
+ if (flag_mri)
+ {
+ flag_reg_prefix_optional = 1;
+ m68k_abspcadd = 1;
+ m68k_rel32 = 0;
+ }
+
+ op_hash = hash_new ();
+
+ obstack_begin (&robyn, 4000);
+ for (i = 0; i < m68k_numopcodes; i++)
+ {
+ hack = slak = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
+ do
+ {
+ ins = &m68k_opcodes[i];
+ /* We *could* ignore insns that don't match our arch here
+ but just leaving them out of the hash. */
+ slak->m_operands = ins->args;
+ slak->m_opnum = strlen (slak->m_operands) / 2;
+ slak->m_arch = ins->arch;
+ slak->m_opcode = ins->opcode;
+ /* This is kludgey */
+ slak->m_codenum = ((ins->match) & 0xffffL) ? 2 : 1;
+ if (i + 1 != m68k_numopcodes
+ && !strcmp (ins->name, m68k_opcodes[i + 1].name))
+ {
+ slak->m_next = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
+ i++;
+ }
+ else
+ slak->m_next = 0;
+ slak = slak->m_next;
+ }
+ while (slak);
+
+ retval = hash_insert (op_hash, ins->name, (char *) hack);
+ if (retval)
+ as_fatal ("Internal Error: Can't hash %s: %s", ins->name, retval);
+ }
+
+ for (i = 0; i < m68k_numaliases; i++)
+ {
+ const char *name = m68k_opcode_aliases[i].primary;
+ const char *alias = m68k_opcode_aliases[i].alias;
+ PTR val = hash_find (op_hash, name);
+ if (!val)
+ as_fatal ("Internal Error: Can't find %s in hash table", name);
+ retval = hash_insert (op_hash, alias, val);
+ if (retval)
+ as_fatal ("Internal Error: Can't hash %s: %s", alias, retval);
+ }
+
+ /* In MRI mode, all unsized branches are variable sized. Normally,
+ they are word sized. */
+ if (flag_mri)
+ {
+ static struct m68k_opcode_alias mri_aliases[] =
+ {
+ { "bhi", "jhi", },
+ { "bls", "jls", },
+ { "bcc", "jcc", },
+ { "bcs", "jcs", },
+ { "bne", "jne", },
+ { "beq", "jeq", },
+ { "bvc", "jvc", },
+ { "bvs", "jvs", },
+ { "bpl", "jpl", },
+ { "bmi", "jmi", },
+ { "bge", "jge", },
+ { "blt", "jlt", },
+ { "bgt", "jgt", },
+ { "ble", "jle", },
+ { "bra", "jra", },
+ { "bsr", "jbsr", },
+ };
+
+ for (i = 0; i < sizeof mri_aliases / sizeof mri_aliases[0]; i++)
+ {
+ const char *name = mri_aliases[i].primary;
+ const char *alias = mri_aliases[i].alias;
+ PTR val = hash_find (op_hash, name);
+ if (!val)
+ as_fatal ("Internal Error: Can't find %s in hash table", name);
+ retval = hash_jam (op_hash, alias, val);
+ if (retval)
+ as_fatal ("Internal Error: Can't hash %s: %s", alias, retval);
+ }
+ }
+
+ for (i = 0; i < sizeof (mklower_table); i++)
+ mklower_table[i] = (isupper (c = (char) i)) ? tolower (c) : c;
+
+ for (i = 0; i < sizeof (notend_table); i++)
+ {
+ notend_table[i] = 0;
+ alt_notend_table[i] = 0;
+ }
+ notend_table[','] = 1;
+ notend_table['{'] = 1;
+ notend_table['}'] = 1;
+ alt_notend_table['a'] = 1;
+ alt_notend_table['A'] = 1;
+ alt_notend_table['d'] = 1;
+ alt_notend_table['D'] = 1;
+ alt_notend_table['#'] = 1;
+ alt_notend_table['&'] = 1;
+ alt_notend_table['f'] = 1;
+ alt_notend_table['F'] = 1;
+#ifdef REGISTER_PREFIX
+ alt_notend_table[REGISTER_PREFIX] = 1;
+#endif
+
+ /* We need to put '(' in alt_notend_table to handle
+ cas2 %d0:%d2,%d3:%d4,(%a0):(%a1)
+ */
+ alt_notend_table['('] = 1;
+
+ /* We need to put '@' in alt_notend_table to handle
+ cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1)
+ */
+ alt_notend_table['@'] = 1;
+
+#ifndef MIT_SYNTAX_ONLY
+ /* Insert pseudo ops, these have to go into the opcode table since
+ gas expects pseudo ops to start with a dot */
+ {
+ int n = 0;
+ while (mote_pseudo_table[n].poc_name)
+ {
+ hack = (struct m68k_incant *)
+ obstack_alloc (&robyn, sizeof (struct m68k_incant));
+ hash_insert (op_hash,
+ mote_pseudo_table[n].poc_name, (char *) hack);
+ hack->m_operands = 0;
+ hack->m_opnum = n;
+ n++;
+ }
+ }
+#endif
+
+ init_regtable ();
+
+#ifdef OBJ_ELF
+ record_alignment (text_section, 2);
+ record_alignment (data_section, 2);
+ record_alignment (bss_section, 2);
+#endif
+}
+
+void
+m68k_init_after_args ()
+{
+ if (cpu_of_arch (current_architecture) == 0)
+ {
+ int i;
+ const char *default_cpu = TARGET_CPU;
+
+ if (*default_cpu == 'm')
+ default_cpu++;
+ for (i = 0; i < n_archs; i++)
+ if (strcasecmp (default_cpu, archs[i].name) == 0)
+ break;
+ if (i == n_archs)
+ {
+ as_bad ("unrecognized default cpu `%s' ???", TARGET_CPU);
+ current_architecture |= m68020;
+ }
+ else
+ current_architecture |= archs[i].arch;
+ }
+ /* Permit m68881 specification with all cpus; those that can't work
+ with a coprocessor could be doing emulation. */
+ if (current_architecture & m68851)
+ {
+ if (current_architecture & m68040)
+ {
+ as_warn ("68040 and 68851 specified; mmu instructions may assemble incorrectly");
+ }
+ }
+ /* What other incompatibilities could we check for? */
+
+ /* Toss in some default assumptions about coprocessors. */
+ if (!no_68881
+ && (cpu_of_arch (current_architecture)
+ /* Can CPU32 have a 68881 coprocessor?? */
+ & (m68020 | m68030 | cpu32)))
+ {
+ current_architecture |= m68881;
+ }
+ if (!no_68851
+ && (cpu_of_arch (current_architecture) & m68020up) != 0
+ && (cpu_of_arch (current_architecture) & m68040up) == 0)
+ {
+ current_architecture |= m68851;
+ }
+ if (no_68881 && (current_architecture & m68881))
+ as_bad ("options for 68881 and no-68881 both given");
+ if (no_68851 && (current_architecture & m68851))
+ as_bad ("options for 68851 and no-68851 both given");
+
+#ifdef OBJ_AOUT
+ /* Work out the magic number. This isn't very general. */
+ if (current_architecture & m68000)
+ m68k_aout_machtype = 0;
+ else if (current_architecture & m68010)
+ m68k_aout_machtype = 1;
+ else if (current_architecture & m68020)
+ m68k_aout_machtype = 2;
+ else
+ m68k_aout_machtype = 2;
+#endif
+
+ /* Note which set of "movec" control registers is available. */
+ switch (cpu_of_arch (current_architecture))
+ {
+ case m68000:
+ control_regs = m68000_control_regs;
+ break;
+ case m68010:
+ control_regs = m68010_control_regs;
+ break;
+ case m68020:
+ case m68030:
+ control_regs = m68020_control_regs;
+ break;
+ case m68040:
+ control_regs = m68040_control_regs;
+ break;
+ case m68060:
+ control_regs = m68060_control_regs;
+ break;
+ case cpu32:
+ control_regs = cpu32_control_regs;
+ break;
+ default:
+ abort ();
+ }
+
+ if (cpu_of_arch (current_architecture) < m68020)
+ md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
+}
+
+/* This is called if we go in or out of MRI mode because of the .mri
+ pseudo-op. */
+
+void
+m68k_mri_mode_change (on)
+ int on;
+{
+ if (on)
+ {
+ if (! flag_reg_prefix_optional)
+ {
+ flag_reg_prefix_optional = 1;
+#ifdef REGISTER_PREFIX
+ init_regtable ();
+#endif
+ }
+ m68k_abspcadd = 1;
+ m68k_rel32 = 0;
+ }
+ else
+ {
+ if (! reg_prefix_optional_seen)
+ {
+#ifdef REGISTER_PREFIX_OPTIONAL
+ flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
+#else
+ flag_reg_prefix_optional = 0;
+#endif
+#ifdef REGISTER_PREFIX
+ init_regtable ();
+#endif
+ }
+ m68k_abspcadd = 0;
+ m68k_rel32 = 1;
+ }
+}
+
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
+
+/* Turn a string in input_line_pointer into a floating point constant
+ of type type, and store the appropriate bytes in *litP. The number
+ of LITTLENUMS emitted is stored in *sizeP . An error message is
+ returned, or NULL on OK. */
+
+char *
+md_atof (type, litP, sizeP)
+ char type;
+ char *litP;
+ int *sizeP;
+{
+ int prec;
+ LITTLENUM_TYPE words[MAX_LITTLENUMS];
+ LITTLENUM_TYPE *wordP;
+ char *t;
+ char *atof_ieee ();
+
+ switch (type)
+ {
+ case 'f':
+ case 'F':
+ case 's':
+ case 'S':
+ prec = 2;
+ break;
+
+ case 'd':
+ case 'D':
+ case 'r':
+ case 'R':
+ prec = 4;
+ break;
+
+ case 'x':
+ case 'X':
+ prec = 6;
+ break;
+
+ case 'p':
+ case 'P':
+ prec = 6;
+ break;
+
+ default:
+ *sizeP = 0;
+ return "Bad call to MD_ATOF()";
+ }
+ t = atof_ieee (input_line_pointer, type, words);
+ if (t)
+ input_line_pointer = t;
+
+ *sizeP = prec * sizeof (LITTLENUM_TYPE);
+ for (wordP = words; prec--;)
+ {
+ md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
+ litP += sizeof (LITTLENUM_TYPE);
+ }
+ return 0;
+}
+
+void
+md_number_to_chars (buf, val, n)
+ char *buf;
+ valueT val;
+ int n;
+{
+ number_to_chars_bigendian (buf, val, n);
+}
+
+static void
+md_apply_fix_2 (fixP, val)
+ fixS *fixP;
+ offsetT val;
+{
+ addressT upper_limit;
+ offsetT lower_limit;
+
+ /* This is unnecessary but it convinces the native rs6000 compiler
+ to generate the code we want. */
+ char *buf = fixP->fx_frag->fr_literal;
+ buf += fixP->fx_where;
+ /* end ibm compiler workaround */
+
+ if (val & 0x80000000)
+ val |= ~(addressT)0x7fffffff;
+ else
+ val &= 0x7fffffff;
+
+#ifdef OBJ_ELF
+ if (fixP->fx_addsy)
+ {
+ memset (buf, 0, fixP->fx_size);
+ fixP->fx_addnumber = val; /* Remember value for emit_reloc */
+ return;
+ }
+#endif
+
+ switch (fixP->fx_size)
+ {
+ /* The cast to offsetT below are necessary to make code correct for
+ machines where ints are smaller than offsetT */
+ case 1:
+ *buf++ = val;
+ upper_limit = 0x7f;
+ lower_limit = - (offsetT) 0x80;
+ break;
+ case 2:
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ upper_limit = 0x7fff;
+ lower_limit = - (offsetT) 0x8000;
+ break;
+ case 4:
+ *buf++ = (val >> 24);
+ *buf++ = (val >> 16);
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ upper_limit = 0x7fffffff;
+ lower_limit = - (offsetT) 0x7fffffff - 1; /* avoid constant overflow */
+ break;
+ default:
+ BAD_CASE (fixP->fx_size);
+ }
+
+ /* Fix up a negative reloc. */
+ if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
+ {
+ fixP->fx_addsy = fixP->fx_subsy;
+ fixP->fx_subsy = NULL;
+ fixP->fx_tcbit = 1;
+ }
+
+ /* For non-pc-relative values, it's conceivable we might get something
+ like "0xff" for a byte field. So extend the upper part of the range
+ to accept such numbers. We arbitrarily disallow "-0xff" or "0xff+0xff",
+ so that we can do any range checking at all. */
+ if (!fixP->fx_pcrel)
+ upper_limit = upper_limit * 2 + 1;
+
+ if ((addressT) val > upper_limit
+ && (val > 0 || val < lower_limit))
+ as_bad_where (fixP->fx_file, fixP->fx_line, "value out of range");
+
+ /* A one byte PC-relative reloc means a short branch. We can't use
+ a short branch with a value of 0 or -1, because those indicate
+ different opcodes (branches with longer offsets). */
+ if (fixP->fx_pcrel
+ && fixP->fx_size == 1
+ && (fixP->fx_addsy == NULL
+ || S_IS_DEFINED (fixP->fx_addsy))
+ && (val == 0 || val == -1))
+ as_bad_where (fixP->fx_file, fixP->fx_line, "invalid byte branch offset");
+}
+
+#ifdef BFD_ASSEMBLER
+int
+md_apply_fix (fixP, valp)
+ fixS *fixP;
+ valueT *valp;
+{
+ md_apply_fix_2 (fixP, (addressT) *valp);
+ return 1;
+}
+#else
+void md_apply_fix (fixP, val)
+ fixS *fixP;
+ long val;
+{
+ md_apply_fix_2 (fixP, (addressT) val);
+}
+#endif
+
+/* *fragP has been relaxed to its final size, and now needs to have
+ the bytes inside it modified to conform to the new size There is UGLY
+ MAGIC here. ..
+ */
+void
+md_convert_frag_1 (fragP)
+ register fragS *fragP;
+{
+ long disp;
+ long ext = 0;
+ fixS *fixP;
+
+ /* Address in object code of the displacement. */
+ register int object_address = fragP->fr_fix + fragP->fr_address;
+
+ /* Address in gas core of the place to store the displacement. */
+ /* This convinces the native rs6000 compiler to generate the code we
+ want. */
+ register char *buffer_address = fragP->fr_literal;
+ buffer_address += fragP->fr_fix;
+ /* end ibm compiler workaround */
+
+ /* The displacement of the address, from current location. */
+ disp = fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0;
+ disp = (disp + fragP->fr_offset) - object_address;
+
+#ifdef BFD_ASSEMBLER
+ disp += fragP->fr_symbol->sy_frag->fr_address;
+#endif
+
+ switch (fragP->fr_subtype)
+ {
+ case TAB (BCC68000, BYTE):
+ case TAB (ABRANCH, BYTE):
+ know (issbyte (disp));
+ if (disp == 0)
+ as_bad ("short branch with zero offset: use :w");
+ fragP->fr_opcode[1] = disp;
+ ext = 0;
+ break;
+ case TAB (DBCC, SHORT):
+ know (issword (disp));
+ ext = 2;
+ break;
+ case TAB (BCC68000, SHORT):
+ case TAB (ABRANCH, SHORT):
+ know (issword (disp));
+ fragP->fr_opcode[1] = 0x00;
+ ext = 2;
+ break;
+ case TAB (ABRANCH, LONG):
+ if (cpu_of_arch (current_architecture) < m68020)
+ {
+ if (fragP->fr_opcode[0] == 0x61)
+ /* BSR */
+ {
+ fragP->fr_opcode[0] = 0x4E;
+ fragP->fr_opcode[1] = (char) 0xB9; /* JBSR with ABSL LONG offset */
+
+ fix_new (fragP,
+ fragP->fr_fix,
+ 4,
+ fragP->fr_symbol,
+ fragP->fr_offset,
+ 0,
+ NO_RELOC);
+
+ fragP->fr_fix += 4;
+ ext = 0;
+ }
+ /* BRA */
+ else if (fragP->fr_opcode[0] == 0x60)
+ {
+ fragP->fr_opcode[0] = 0x4E;
+ fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG offset */
+ fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ ext = 0;
+ }
+ else
+ {
+ as_bad ("Long branch offset not supported.");
+ }
+ }
+ else
+ {
+ fragP->fr_opcode[1] = (char) 0xff;
+ ext = 4;
+ }
+ break;
+ case TAB (BCC68000, LONG):
+ /* only Bcc 68000 instructions can come here */
+ /* change bcc into b!cc/jmp absl long */
+ fragP->fr_opcode[0] ^= 0x01; /* invert bcc */
+ fragP->fr_opcode[1] = 0x6;/* branch offset = 6 */
+
+ /* JF: these used to be fr_opcode[2,3], but they may be in a
+ different frag, in which case refering to them is a no-no.
+ Only fr_opcode[0,1] are guaranteed to work. */
+ *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
+ *buffer_address++ = (char) 0xf9;
+ fragP->fr_fix += 2; /* account for jmp instruction */
+ fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ ext = 0;
+ break;
+ case TAB (DBCC, LONG):
+ /* only DBcc 68000 instructions can come here */
+ /* change dbcc into dbcc/jmp absl long */
+ /* JF: these used to be fr_opcode[2-7], but that's wrong */
+ *buffer_address++ = 0x00; /* branch offset = 4 */
+ *buffer_address++ = 0x04;
+ *buffer_address++ = 0x60; /* put in bra pc+6 */
+ *buffer_address++ = 0x06;
+ *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
+ *buffer_address++ = (char) 0xf9;
+
+ fragP->fr_fix += 6; /* account for bra/jmp instructions */
+ fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ ext = 0;
+ break;
+ case TAB (FBRANCH, SHORT):
+ know ((fragP->fr_opcode[1] & 0x40) == 0);
+ ext = 2;
+ break;
+ case TAB (FBRANCH, LONG):
+ fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit */
+ ext = 4;
+ break;
+ case TAB (PCREL, SHORT):
+ ext = 2;
+ break;
+ case TAB (PCREL, LONG):
+ /* The thing to do here is force it to ABSOLUTE LONG, since
+ PCREL is really trying to shorten an ABSOLUTE address anyway */
+ /* JF FOO This code has not been tested */
+ fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
+ 0, NO_RELOC);
+ if ((fragP->fr_opcode[1] & 0x3F) != 0x3A)
+ as_bad ("Internal error (long PC-relative operand) for insn 0x%04x at 0x%lx",
+ (unsigned) fragP->fr_opcode[0],
+ (unsigned long) fragP->fr_address);
+ fragP->fr_opcode[1] &= ~0x3F;
+ fragP->fr_opcode[1] |= 0x39; /* Mode 7.1 */
+ fragP->fr_fix += 4;
+ ext = 0;
+ break;
+ case TAB (PCLEA, SHORT):
+ fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ fragP->fr_opcode[1] &= ~0x3F;
+ fragP->fr_opcode[1] |= 0x3A; /* 072 - mode 7.2 */
+ ext = 2;
+ break;
+ case TAB (PCLEA, LONG):
+ fixP = fix_new (fragP, (int) (fragP->fr_fix) + 2, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ fixP->fx_pcrel_adjust = 2;
+ /* Already set to mode 7.3; this indicates: PC indirect with
+ suppressed index, 32-bit displacement. */
+ *buffer_address++ = 0x01;
+ *buffer_address++ = 0x70;
+ fragP->fr_fix += 2;
+ ext = 4;
+ break;
+
+ case TAB (PCINDEX, BYTE):
+ disp += 2;
+ if (!issbyte (disp))
+ {
+ as_bad ("displacement doesn't fit in one byte");
+ disp = 0;
+ }
+ assert (fragP->fr_fix >= 2);
+ buffer_address[-2] &= ~1;
+ buffer_address[-1] = disp;
+ ext = 0;
+ break;
+ case TAB (PCINDEX, SHORT):
+ disp += 2;
+ assert (issword (disp));
+ assert (fragP->fr_fix >= 2);
+ buffer_address[-2] |= 0x1;
+ buffer_address[-1] = 0x20;
+ fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
+ fragP->fr_offset, (fragP->fr_opcode[1] & 077) == 073,
+ NO_RELOC);
+ fixP->fx_pcrel_adjust = 2;
+ ext = 2;
+ break;
+ case TAB (PCINDEX, LONG):
+ disp += 2;
+ fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
+ fragP->fr_offset, (fragP->fr_opcode[1] & 077) == 073,
+ NO_RELOC);
+ fixP->fx_pcrel_adjust = 2;
+ assert (fragP->fr_fix >= 2);
+ buffer_address[-2] |= 0x1;
+ buffer_address[-1] = 0x30;
+ ext = 4;
+ break;
+ }
+
+ if (ext)
+ {
+ md_number_to_chars (buffer_address, (long) disp, (int) ext);
+ fragP->fr_fix += ext;
+ }
+}
+
+#ifndef BFD_ASSEMBLER
+
+void
+md_convert_frag (headers, sec, fragP)
+ object_headers *headers;
+ segT sec;
+ fragS *fragP;
+{
+ md_convert_frag_1 (fragP);
+}
+
+#else
+
+void
+md_convert_frag (abfd, sec, fragP)
+ bfd *abfd;
+ segT sec;
+ fragS *fragP;
+{
+ md_convert_frag_1 (fragP);
+}
+#endif
+
+/* Force truly undefined symbols to their maximum size, and generally set up
+ the frag list to be relaxed
+ */
+int
+md_estimate_size_before_relax (fragP, segment)
+ register fragS *fragP;
+ segT segment;
+{
+ int old_fix;
+ register char *buffer_address = fragP->fr_fix + fragP->fr_literal;
+
+ old_fix = fragP->fr_fix;
+
+ /* handle SZ_UNDEF first, it can be changed to BYTE or SHORT */
+ switch (fragP->fr_subtype)
+ {
+
+ case TAB (ABRANCH, SZ_UNDEF):
+ {
+ if ((fragP->fr_symbol != NULL) /* Not absolute */
+ && S_GET_SEGMENT (fragP->fr_symbol) == segment)
+ {
+ fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
+ break;
+ }
+ else if ((fragP->fr_symbol == 0) || (cpu_of_arch (current_architecture) < m68020))
+ {
+ /* On 68000, or for absolute value, switch to abs long */
+ /* FIXME, we should check abs val, pick short or long */
+ if (fragP->fr_opcode[0] == 0x61)
+ {
+ fragP->fr_opcode[0] = 0x4E;
+ fragP->fr_opcode[1] = (char) 0xB9; /* JBSR with ABSL LONG offset */
+ fix_new (fragP, fragP->fr_fix, 4,
+ fragP->fr_symbol, fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ frag_wane (fragP);
+ }
+ else if (fragP->fr_opcode[0] == 0x60)
+ {
+ fragP->fr_opcode[0] = 0x4E;
+ fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG offset */
+ fix_new (fragP, fragP->fr_fix, 4,
+ fragP->fr_symbol, fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ frag_wane (fragP);
+ }
+ else
+ {
+ as_warn ("Long branch offset to extern symbol not supported.");
+ }
+ }
+ else
+ { /* Symbol is still undefined. Make it simple */
+ fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ fragP->fr_fix += 4;
+ fragP->fr_opcode[1] = (char) 0xff;
+ frag_wane (fragP);
+ break;
+ }
+
+ break;
+ } /* case TAB(ABRANCH,SZ_UNDEF) */
+
+ case TAB (FBRANCH, SZ_UNDEF):
+ {
+ if (S_GET_SEGMENT (fragP->fr_symbol) == segment || flag_short_refs)
+ {
+ fragP->fr_subtype = TAB (FBRANCH, SHORT);
+ fragP->fr_var += 2;
+ }
+ else
+ {
+ fix_new (fragP, (int) fragP->fr_fix, 4, fragP->fr_symbol,
+ fragP->fr_offset, 1, NO_RELOC);
+ fragP->fr_fix += 4;
+ fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit */
+ frag_wane (fragP);
+ }
+ break;
+ } /* TAB(FBRANCH,SZ_UNDEF) */
+
+ case TAB (PCREL, SZ_UNDEF):
+ {
+ if (S_GET_SEGMENT (fragP->fr_symbol) == segment
+ || flag_short_refs
+ || cpu_of_arch (current_architecture) < m68020)
+ {
+ fragP->fr_subtype = TAB (PCREL, SHORT);
+ fragP->fr_var += 2;
+ }
+ else
+ {
+ fragP->fr_subtype = TAB (PCREL, LONG);
+ fragP->fr_var += 4;
+ }
+ break;
+ } /* TAB(PCREL,SZ_UNDEF) */
+
+ case TAB (BCC68000, SZ_UNDEF):
+ {
+ if ((fragP->fr_symbol != NULL)
+ && S_GET_SEGMENT (fragP->fr_symbol) == segment)
+ {
+ fragP->fr_subtype = TAB (BCC68000, BYTE);
+ break;
+ }
+ /* only Bcc 68000 instructions can come here */
+ /* change bcc into b!cc/jmp absl long */
+ fragP->fr_opcode[0] ^= 0x01; /* invert bcc */
+ if (flag_short_refs)
+ {
+ fragP->fr_opcode[1] = 0x04; /* branch offset = 6 */
+ /* JF: these were fr_opcode[2,3] */
+ buffer_address[0] = 0x4e; /* put in jmp long (0x4ef9) */
+ buffer_address[1] = (char) 0xf8;
+ fragP->fr_fix += 2; /* account for jmp instruction */
+ fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 2;
+ }
+ else
+ {
+ fragP->fr_opcode[1] = 0x06; /* branch offset = 6 */
+ /* JF: these were fr_opcode[2,3] */
+ buffer_address[0] = 0x4e; /* put in jmp long (0x4ef9) */
+ buffer_address[1] = (char) 0xf9;
+ fragP->fr_fix += 2; /* account for jmp instruction */
+ fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ }
+ frag_wane (fragP);
+ break;
+ } /* case TAB(BCC68000,SZ_UNDEF) */
+
+ case TAB (DBCC, SZ_UNDEF):
+ {
+ if (fragP->fr_symbol != NULL && S_GET_SEGMENT (fragP->fr_symbol) == segment)
+ {
+ fragP->fr_subtype = TAB (DBCC, SHORT);
+ fragP->fr_var += 2;
+ break;
+ }
+ /* only DBcc 68000 instructions can come here */
+ /* change dbcc into dbcc/jmp absl long */
+ /* JF: these used to be fr_opcode[2-4], which is wrong. */
+ buffer_address[0] = 0x00; /* branch offset = 4 */
+ buffer_address[1] = 0x04;
+ buffer_address[2] = 0x60; /* put in bra pc + ... */
+
+ if (flag_short_refs)
+ {
+ /* JF: these were fr_opcode[5-7] */
+ buffer_address[3] = 0x04; /* plus 4 */
+ buffer_address[4] = 0x4e; /* Put in Jump Word */
+ buffer_address[5] = (char) 0xf8;
+ fragP->fr_fix += 6; /* account for bra/jmp instruction */
+ fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 2;
+ }
+ else
+ {
+ /* JF: these were fr_opcode[5-7] */
+ buffer_address[3] = 0x06; /* Plus 6 */
+ buffer_address[4] = 0x4e; /* put in jmp long (0x4ef9) */
+ buffer_address[5] = (char) 0xf9;
+ fragP->fr_fix += 6; /* account for bra/jmp instruction */
+ fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
+ fragP->fr_offset, 0, NO_RELOC);
+ fragP->fr_fix += 4;
+ }
+
+ frag_wane (fragP);
+ break;
+ } /* case TAB(DBCC,SZ_UNDEF) */
+
+ case TAB (PCLEA, SZ_UNDEF):
+ {
+ if ((S_GET_SEGMENT (fragP->fr_symbol)) == segment
+ || flag_short_refs
+ || cpu_of_arch (current_architecture) < m68020)
+ {
+ fragP->fr_subtype = TAB (PCLEA, SHORT);
+ fragP->fr_var += 2;
+ }
+ else
+ {
+ fragP->fr_subtype = TAB (PCLEA, LONG);
+ fragP->fr_var += 6;
+ }
+ break;
+ } /* TAB(PCLEA,SZ_UNDEF) */
+
+ case TAB (PCINDEX, SZ_UNDEF):
+ if (S_GET_SEGMENT (fragP->fr_symbol) == segment
+ || cpu_of_arch (current_architecture) < m68020)
+ {
+ fragP->fr_subtype = TAB (PCINDEX, BYTE);
+ }
+ else
+ {
+ fragP->fr_subtype = TAB (PCINDEX, LONG);
+ fragP->fr_var += 4;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ /* now that SZ_UNDEF are taken care of, check others */
+ switch (fragP->fr_subtype)
+ {
+ case TAB (BCC68000, BYTE):
+ case TAB (ABRANCH, BYTE):
+ /* We can't do a short jump to the next instruction, so in that
+ case we force word mode. At this point S_GET_VALUE should
+ return the offset of the symbol within its frag. If the
+ symbol is at the start of a frag, and it is the next frag
+ with any data in it (usually this is just the next frag, but
+ assembler listings may introduce empty frags), we must use
+ word mode. */
+ if (fragP->fr_symbol && S_GET_VALUE (fragP->fr_symbol) == 0)
+ {
+ fragS *l;
+
+ for (l = fragP->fr_next;
+ l != fragP->fr_symbol->sy_frag;
+ l = l->fr_next)
+ if (l->fr_fix + l->fr_var != 0)
+ break;
+ if (l == fragP->fr_symbol->sy_frag)
+ {
+ fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
+ fragP->fr_var += 2;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ return fragP->fr_var + fragP->fr_fix - old_fix;
+}
+
+#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
+/* the bit-field entries in the relocation_info struct plays hell
+ with the byte-order problems of cross-assembly. So as a hack,
+ I added this mach. dependent ri twiddler. Ugly, but it gets
+ you there. -KWK */
+/* on m68k: first 4 bytes are normal unsigned long, next three bytes
+ are symbolnum, most sig. byte first. Last byte is broken up with
+ bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower
+ nibble as nuthin. (on Sun 3 at least) */
+/* Translate the internal relocation information into target-specific
+ format. */
+#ifdef comment
+void
+md_ri_to_chars (the_bytes, ri)
+ char *the_bytes;
+ struct reloc_info_generic *ri;
+{
+ /* this is easy */
+ md_number_to_chars (the_bytes, ri->r_address, 4);
+ /* now the fun stuff */
+ the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff;
+ the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff;
+ the_bytes[6] = ri->r_symbolnum & 0x0ff;
+ the_bytes[7] = (((ri->r_pcrel << 7) & 0x80) | ((ri->r_length << 5) & 0x60) |
+ ((ri->r_extern << 4) & 0x10));
+}
+
+#endif /* comment */
+
+#ifndef BFD_ASSEMBLER
+void
+tc_aout_fix_to_chars (where, fixP, segment_address_in_file)
+ char *where;
+ fixS *fixP;
+ relax_addressT segment_address_in_file;
+{
+ /*
+ * In: length of relocation (or of address) in chars: 1, 2 or 4.
+ * Out: GNU LD relocation length code: 0, 1, or 2.
+ */
+
+ static CONST unsigned char nbytes_r_length[] = {42, 0, 1, 42, 2};
+ long r_symbolnum;
+
+ know (fixP->fx_addsy != NULL);
+
+ md_number_to_chars (where,
+ fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
+ 4);
+
+ r_symbolnum = (S_IS_DEFINED (fixP->fx_addsy)
+ ? S_GET_TYPE (fixP->fx_addsy)
+ : fixP->fx_addsy->sy_number);
+
+ where[4] = (r_symbolnum >> 16) & 0x0ff;
+ where[5] = (r_symbolnum >> 8) & 0x0ff;
+ where[6] = r_symbolnum & 0x0ff;
+ where[7] = (((fixP->fx_pcrel << 7) & 0x80) | ((nbytes_r_length[fixP->fx_size] << 5) & 0x60) |
+ (((!S_IS_DEFINED (fixP->fx_addsy)) << 4) & 0x10));
+}
+#endif
+
+#endif /* OBJ_AOUT or OBJ_BOUT */
+
+#ifndef WORKING_DOT_WORD
+CONST int md_short_jump_size = 4;
+CONST int md_long_jump_size = 6;
+
+void
+md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
+ char *ptr;
+ addressT from_addr, to_addr;
+ fragS *frag;
+ symbolS *to_symbol;
+{
+ valueT offset;
+
+ offset = to_addr - (from_addr + 2);
+
+ md_number_to_chars (ptr, (valueT) 0x6000, 2);
+ md_number_to_chars (ptr + 2, (valueT) offset, 2);
+}
+
+void
+md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
+ char *ptr;
+ addressT from_addr, to_addr;
+ fragS *frag;
+ symbolS *to_symbol;
+{
+ valueT offset;
+
+ if (cpu_of_arch (current_architecture) < m68020)
+ {
+ offset = to_addr - S_GET_VALUE (to_symbol);
+ md_number_to_chars (ptr, (valueT) 0x4EF9, 2);
+ md_number_to_chars (ptr + 2, (valueT) offset, 4);
+ fix_new (frag, (ptr + 2) - frag->fr_literal, 4, to_symbol, (offsetT) 0,
+ 0, NO_RELOC);
+ }
+ else
+ {
+ offset = to_addr - (from_addr + 2);
+ md_number_to_chars (ptr, (valueT) 0x60ff, 2);
+ md_number_to_chars (ptr + 2, (valueT) offset, 4);
+ }
+}
+
+#endif
+
+/* Different values of OK tell what its OK to return. Things that
+ aren't OK are an error (what a shock, no?)
+
+ 0: Everything is OK
+ 10: Absolute 1:8 only
+ 20: Absolute 0:7 only
+ 30: absolute 0:15 only
+ 40: Absolute 0:31 only
+ 50: absolute 0:127 only
+ 55: absolute -64:63 only
+ 60: absolute -128:127 only
+ 70: absolute 0:4095 only
+ 80: No bignums
+
+ */
+
+static int
+get_num (exp, ok)
+ struct m68k_exp *exp;
+ int ok;
+{
+ if (exp->exp.X_op == O_absent)
+ {
+ /* Do the same thing the VAX asm does */
+ op (exp) = O_constant;
+ adds (exp) = 0;
+ subs (exp) = 0;
+ offs (exp) = 0;
+ if (ok == 10)
+ {
+ as_warn ("expression out of range: defaulting to 1");
+ offs (exp) = 1;
+ }
+ }
+ else if (exp->exp.X_op == O_constant)
+ {
+ switch (ok)
+ {
+ case 10:
+ if (offs (exp) < 1 || offs (exp) > 8)
+ {
+ as_warn ("expression out of range: defaulting to 1");
+ offs (exp) = 1;
+ }
+ break;
+ case 20:
+ if (offs (exp) < 0 || offs (exp) > 7)
+ goto outrange;
+ break;
+ case 30:
+ if (offs (exp) < 0 || offs (exp) > 15)
+ goto outrange;
+ break;
+ case 40:
+ if (offs (exp) < 0 || offs (exp) > 32)
+ goto outrange;
+ break;
+ case 50:
+ if (offs (exp) < 0 || offs (exp) > 127)
+ goto outrange;
+ break;
+ case 55:
+ if (offs (exp) < -64 || offs (exp) > 63)
+ goto outrange;
+ break;
+ case 60:
+ if (offs (exp) < -128 || offs (exp) > 127)
+ goto outrange;
+ break;
+ case 70:
+ if (offs (exp) < 0 || offs (exp) > 4095)
+ {
+ outrange:
+ as_warn ("expression out of range: defaulting to 0");
+ offs (exp) = 0;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ else if (exp->exp.X_op == O_big)
+ {
+ if (offs (exp) <= 0 /* flonum */
+ && (ok == 80 /* no bignums */
+ || (ok > 10 /* small-int ranges including 0 ok */
+ /* If we have a flonum zero, a zero integer should
+ do as well (e.g., in moveq). */
+ && generic_floating_point_number.exponent == 0
+ && generic_floating_point_number.low[0] == 0)))
+ {
+ /* HACK! Turn it into a long */
+ LITTLENUM_TYPE words[6];
+
+ gen_to_words (words, 2, 8L); /* These numbers are magic! */
+ op (exp) = O_constant;
+ adds (exp) = 0;
+ subs (exp) = 0;
+ offs (exp) = words[1] | (words[0] << 16);
+ }
+ else if (ok != 0)
+ {
+ op (exp) = O_constant;
+ adds (exp) = 0;
+ subs (exp) = 0;
+ offs (exp) = (ok == 10) ? 1 : 0;
+ as_warn ("Can't deal with expression; defaulting to %ld",
+ offs (exp));
+ }
+ }
+ else
+ {
+ if (ok >= 10 && ok <= 70)
+ {
+ op (exp) = O_constant;
+ adds (exp) = 0;
+ subs (exp) = 0;
+ offs (exp) = (ok == 10) ? 1 : 0;
+ as_warn ("Can't deal with expression; defaulting to %ld",
+ offs (exp));
+ }
+ }
+
+ if (exp->size != SIZE_UNSPEC)
+ {
+ switch (exp->size)
+ {
+ case SIZE_UNSPEC:
+ case SIZE_LONG:
+ break;
+ case SIZE_BYTE:
+ if (!isbyte (offs (exp)))
+ as_warn ("expression doesn't fit in BYTE");
+ break;
+ case SIZE_WORD:
+ if (!isword (offs (exp)))
+ as_warn ("expression doesn't fit in WORD");
+ break;
+ }
+ }
+
+ return offs (exp);
+}
+
+/* These are the back-ends for the various machine dependent pseudo-ops. */
+void demand_empty_rest_of_line (); /* Hate those extra verbose names */
+
+static void
+s_data1 (ignore)
+ int ignore;
+{
+ subseg_set (data_section, 1);
+ demand_empty_rest_of_line ();
+}
+
+static void
+s_data2 (ignore)
+ int ignore;
+{
+ subseg_set (data_section, 2);
+ demand_empty_rest_of_line ();
+}
+
+static void
+s_bss (ignore)
+ int ignore;
+{
+ /* We don't support putting frags in the BSS segment, we fake it
+ by marking in_bss, then looking at s_skip for clues. */
+ subseg_set (bss_section, 0);
+ demand_empty_rest_of_line ();
+}
- if (opcode->m_operands == 0) {
- char *old = input_line_pointer;
- *old = '\n';
- input_line_pointer = p;
- /* Ahh - it's a motorola style psuedo op */
- mote_pseudo_table[opcode->m_opnum].poc_handler
- ( mote_pseudo_table[opcode->m_opnum].poc_val);
- input_line_pointer = old;
- *old = 0;
+static void
+s_even (ignore)
+ int ignore;
+{
+ register int temp;
+ register long temp_fill;
+
+ temp = 1; /* JF should be 2? */
+ temp_fill = get_absolute_expression ();
+ if (!need_pass_2) /* Never make frag if expect extra pass. */
+ frag_align (temp, (int) temp_fill);
+ demand_empty_rest_of_line ();
+}
- return;
- }
+static void
+s_proc (ignore)
+ int ignore;
+{
+ demand_empty_rest_of_line ();
+}
+\f
+/* Pseudo-ops handled for MRI compatibility. */
- for(opP = &the_ins.operands[0]; *p; opP++) {
+/* Handle an MRI style chip specification. */
- p = crack_operand(p, opP);
+static void
+mri_chip ()
+{
+ char *s;
+ char c;
+ int i;
- if (opP->error) {
- the_ins.error=opP->error;
+ s = input_line_pointer;
+ c = get_symbol_end ();
+ for (i = 0; i < n_archs; i++)
+ if (strcasecmp (s, archs[i].name) == 0)
+ break;
+ if (i >= n_archs)
+ {
+ as_bad ("%s: unrecognized processor name", s);
+ *input_line_pointer = c;
+ ignore_rest_of_line ();
return;
}
- }
+ *input_line_pointer = c;
- opsfound = opP - &the_ins.operands[0];
+ if (*input_line_pointer == '/')
+ current_architecture = 0;
+ else
+ current_architecture &= m68881 | m68851;
+ current_architecture |= archs[i].arch;
- /* This ugly hack is to support the floating pt opcodes in their standard form */
- /* Essentially, we fake a first enty of type COP#1 */
- if (opcode->m_operands[0]=='I') {
- int n;
+ while (*input_line_pointer == '/')
+ {
+ ++input_line_pointer;
+ s = input_line_pointer;
+ c = get_symbol_end ();
+ if (strcmp (s, "68881") == 0)
+ current_architecture |= m68881;
+ else if (strcmp (s, "68851") == 0)
+ current_architecture |= m68851;
+ *input_line_pointer = c;
+ }
+}
- for(n=opsfound;n>0;--n)
- the_ins.operands[n]=the_ins.operands[n-1];
+/* The MRI CHIP pseudo-op. */
- memset((char *)(&the_ins.operands[0]), '\0', sizeof(the_ins.operands[0]));
- the_ins.operands[0].mode=MSCR;
- the_ins.operands[0].reg=COPNUM; /* COP #1 */
- opsfound++;
- }
+static void
+s_chip (ignore)
+ int ignore;
+{
+ char *stop = NULL;
+ char stopc;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+ mri_chip ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ demand_empty_rest_of_line ();
+}
- /* We've got the operands. Find an opcode that'll accept them */
- for (losing = 0; ; ) {
- /* if we didn't get the right number of ops,
- or we have no common model with this pattern
- then reject this pattern. */
+/* The MRI FOPT pseudo-op. */
- if (opsfound != opcode->m_opnum
- || ((opcode->m_arch & current_architecture) == 0))
- {
- ++losing;
- ok_arch |= opcode->m_arch;
- }
- else {
- for (s=opcode->m_operands, opP = &the_ins.operands[0]; *s && !losing; s += 2, opP++) {
- /* Warning: this switch is huge! */
- /* I've tried to organize the cases into this order:
- non-alpha first, then alpha by letter. lower-case goes directly
- before uppercase counterpart. */
- /* Code with multiple case ...: gets sorted by the lowest case ...
- it belongs to. I hope this makes sense. */
- switch(*s) {
- case '!':
- if (opP->mode == MSCR || opP->mode == IMMED
- || opP->mode == DREG || opP->mode == AREG
- || opP->mode == AINC || opP->mode == ADEC
- || opP->mode == REGLST)
- losing++;
- break;
+static void
+s_fopt (ignore)
+ int ignore;
+{
+ SKIP_WHITESPACE ();
- case '#':
- if(opP->mode!=IMMED)
- losing++;
- else {
- long t;
-
- t=get_num(opP->con1,80);
- if(s[1]=='b' && !isbyte(t))
- losing++;
- else if(s[1]=='w' && !isword(t))
- losing++;
- }
- break;
+ if (strncasecmp (input_line_pointer, "ID=", 3) == 0)
+ {
+ int temp;
- case '^':
- case 'T':
- if(opP->mode!=IMMED)
- losing++;
- break;
+ input_line_pointer += 3;
+ temp = get_absolute_expression ();
+ if (temp < 0 || temp > 7)
+ as_bad ("bad coprocessor id");
+ else
+ m68k_float_copnum = COP0 + temp;
+ }
+ else
+ {
+ as_bad ("unrecognized fopt option");
+ ignore_rest_of_line ();
+ return;
+ }
- case '$':
- if(opP->mode==MSCR || opP->mode==AREG ||
- opP->mode==IMMED || opP->reg==PC || opP->reg==ZPC || opP->mode==REGLST)
- losing++;
- break;
+ demand_empty_rest_of_line ();
+}
- case '%':
- if(opP->mode==MSCR || opP->reg==PC ||
- opP->reg==ZPC || opP->mode==REGLST)
- losing++;
- break;
+/* The structure used to handle the MRI OPT pseudo-op. */
+struct opt_action
+{
+ /* The name of the option. */
+ const char *name;
+
+ /* If this is not NULL, just call this function. The first argument
+ is the ARG field of this structure, the second argument is
+ whether the option was negated. */
+ void (*pfn) PARAMS ((int arg, int on));
+
+ /* If this is not NULL, and the PFN field is NULL, set the variable
+ this points to. Set it to the ARG field if the option was not
+ negated, and the NOTARG field otherwise. */
+ int *pvar;
+
+ /* The value to pass to PFN or to assign to *PVAR. */
+ int arg;
+
+ /* The value to assign to *PVAR if the option is negated. If PFN is
+ NULL, and PVAR is not NULL, and ARG and NOTARG are the same, then
+ the option may not be negated. */
+ int notarg;
+};
- case '&':
- if(opP->mode==MSCR || opP->mode==DREG ||
- opP->mode==AREG || opP->mode==IMMED || opP->reg==PC || opP->reg==ZPC ||
- opP->mode==AINC || opP->mode==ADEC || opP->mode==REGLST)
- losing++;
- break;
+/* The table used to handle the MRI OPT pseudo-op. */
- case '*':
- if(opP->mode==MSCR || opP->mode==REGLST)
- losing++;
- break;
+static void skip_to_comma PARAMS ((int, int));
+static void opt_nest PARAMS ((int, int));
+static void opt_chip PARAMS ((int, int));
+static void opt_list PARAMS ((int, int));
+static void opt_list_symbols PARAMS ((int, int));
- case '+':
- if(opP->mode!=AINC)
- losing++;
- break;
+static const struct opt_action opt_table[] =
+{
+ { "abspcadd", 0, &m68k_abspcadd, 1, 0 },
+
+ /* We do relaxing, so there is little use for these options. */
+ { "b", 0, 0, 0, 0 },
+ { "brs", 0, 0, 0, 0 },
+ { "brb", 0, 0, 0, 0 },
+ { "brl", 0, 0, 0, 0 },
+ { "brw", 0, 0, 0, 0 },
+
+ { "c", 0, 0, 0, 0 },
+ { "cex", 0, 0, 0, 0 },
+ { "case", 0, &symbols_case_sensitive, 1, 0 },
+ { "cl", 0, 0, 0, 0 },
+ { "cre", 0, 0, 0, 0 },
+ { "d", 0, &flag_keep_locals, 1, 0 },
+ { "e", 0, 0, 0, 0 },
+ { "f", 0, &flag_short_refs, 1, 0 },
+ { "frs", 0, &flag_short_refs, 1, 0 },
+ { "frl", 0, &flag_short_refs, 0, 1 },
+ { "g", 0, 0, 0, 0 },
+ { "i", 0, 0, 0, 0 },
+ { "m", 0, 0, 0, 0 },
+ { "mex", 0, 0, 0, 0 },
+ { "mc", 0, 0, 0, 0 },
+ { "md", 0, 0, 0, 0 },
+ { "nest", opt_nest, 0, 0, 0 },
+ { "next", skip_to_comma, 0, 0, 0 },
+ { "o", 0, 0, 0, 0 },
+ { "old", 0, 0, 0, 0 },
+ { "op", skip_to_comma, 0, 0, 0 },
+ { "pco", 0, 0, 0, 0 },
+ { "p", opt_chip, 0, 0, 0 },
+ { "pcr", 0, 0, 0, 0 },
+ { "pcs", 0, 0, 0, 0 },
+ { "r", 0, 0, 0, 0 },
+ { "quick", 0, &m68k_quick, 1, 0 },
+ { "rel32", 0, &m68k_rel32, 1, 0 },
+ { "s", opt_list, 0, 0, 0 },
+ { "t", opt_list_symbols, 0, 0, 0 },
+ { "w", 0, &flag_no_warnings, 0, 1 },
+ { "x", 0, 0, 0, 0 }
+};
- case '-':
- if(opP->mode!=ADEC)
- losing++;
- break;
+#define OPTCOUNT (sizeof opt_table / sizeof opt_table[0])
- case '/':
- if(opP->mode==MSCR || opP->mode==AREG ||
- opP->mode==AINC || opP->mode==ADEC || opP->mode==IMMED || opP->mode==REGLST)
- losing++;
- break;
+/* The MRI OPT pseudo-op. */
- case ';':
- if(opP->mode==MSCR || opP->mode==AREG || opP->mode==REGLST)
- losing++;
- break;
+static void
+s_opt (ignore)
+ int ignore;
+{
+ do
+ {
+ int t;
+ char *s;
+ char c;
+ int i;
+ const struct opt_action *o;
- case '?':
- if(opP->mode==MSCR || opP->mode==AREG ||
- opP->mode==AINC || opP->mode==ADEC || opP->mode==IMMED || opP->reg==PC ||
- opP->reg==ZPC || opP->mode==REGLST)
- losing++;
- break;
+ SKIP_WHITESPACE ();
- case '@':
- if(opP->mode==MSCR || opP->mode==AREG ||
- opP->mode==IMMED || opP->mode==REGLST)
- losing++;
- break;
+ t = 1;
+ if (*input_line_pointer == '-')
+ {
+ ++input_line_pointer;
+ t = 0;
+ }
+ else if (strncasecmp (input_line_pointer, "NO", 2) == 0)
+ {
+ input_line_pointer += 2;
+ t = 0;
+ }
- case '~': /* For now! (JF FOO is this right?) */
- if(opP->mode==MSCR || opP->mode==DREG ||
- opP->mode==AREG || opP->mode==IMMED || opP->reg==PC || opP->reg==ZPC || opP->mode==REGLST)
- losing++;
- break;
+ s = input_line_pointer;
+ c = get_symbol_end ();
- case '3':
- if (opP->mode != MSCR || (opP->reg != TT0 && opP->reg != TT1))
- losing++;
- break;
+ for (i = 0, o = opt_table; i < OPTCOUNT; i++, o++)
+ {
+ if (strcasecmp (s, o->name) == 0)
+ {
+ if (o->pfn)
+ {
+ /* Restore input_line_pointer now in case the option
+ takes arguments. */
+ *input_line_pointer = c;
+ (*o->pfn) (o->arg, t);
+ }
+ else if (o->pvar != NULL)
+ {
+ if (! t && o->arg == o->notarg)
+ as_bad ("option `%s' may not be negated", s);
+ *input_line_pointer = c;
+ *o->pvar = t ? o->arg : o->notarg;
+ }
+ else
+ *input_line_pointer = c;
+ break;
+ }
+ }
+ if (i >= OPTCOUNT)
+ {
+ as_bad ("option `%s' not recognized", s);
+ *input_line_pointer = c;
+ }
+ }
+ while (*input_line_pointer++ == ',');
- case 'A':
- if(opP->mode!=AREG)
- losing++;
- break;
- case 'a':
- if (opP->mode != AINDR) {
- ++losing;
- } /* if not address register indirect */
- break;
- case 'B': /* FOO */
- if(opP->mode!=ABSL || (flagseen['S'] && instring[0] == 'j'
- && instring[1] == 'b'
- && instring[2] == 's'
- && instring[3] == 'r'))
- losing++;
- break;
+ /* Move back to terminating character. */
+ --input_line_pointer;
+ demand_empty_rest_of_line ();
+}
- case 'C':
- if(opP->mode!=MSCR || opP->reg!=CCR)
- losing++;
- break;
+/* Skip ahead to a comma. This is used for OPT options which we do
+ not suppor tand which take arguments. */
- case 'd': /* FOO This mode is a KLUDGE!! */
- if(opP->mode!=AOFF && (opP->mode!=ABSL ||
- opP->con1->e_beg[0]!='(' || opP->con1->e_end[0]!=')'))
- losing++;
- break;
+static void
+skip_to_comma (arg, on)
+ int arg;
+ int on;
+{
+ while (*input_line_pointer != ','
+ && ! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+}
- case 'D':
- if(opP->mode!=DREG)
- losing++;
- break;
+/* Handle the OPT NEST=depth option. */
- case 'F':
- if(opP->mode!=MSCR || opP->reg<(FPREG+0) || opP->reg>(FPREG+7))
- losing++;
- break;
+static void
+opt_nest (arg, on)
+ int arg;
+ int on;
+{
+ if (*input_line_pointer != '=')
+ {
+ as_bad ("bad format of OPT NEST=depth");
+ return;
+ }
- case 'I':
- if(opP->mode!=MSCR || opP->reg<COPNUM ||
- opP->reg>=COPNUM+7)
- losing++;
- break;
+ ++input_line_pointer;
+ max_macro_nest = get_absolute_expression ();
+}
- case 'J':
- if (opP->mode != MSCR
- || opP->reg < USP
- || opP->reg > URP
- || cpu_of_arch(current_architecture) < m68010 /* before 68010 had none */
- || (cpu_of_arch(current_architecture) < m68020
- && opP->reg != SFC
- && opP->reg != DFC
- && opP->reg != USP
- && opP->reg != VBR) /* 68010's had only these */
- || (cpu_of_arch(current_architecture) < m68040
- && opP->reg != SFC
- && opP->reg != DFC
- && opP->reg != USP
- && opP->reg != VBR
- && opP->reg != CACR
- && opP->reg != CAAR
- && opP->reg != MSP
- && opP->reg != ISP) /* 680[23]0's have only these */
- || (cpu_of_arch(current_architecture) == m68040 /* 68040 has all but this */
- && opP->reg == CAAR)) {
- losing++;
- } /* doesn't cut it */
- break;
+/* Handle the OPT P=chip option. */
- case 'k':
- if(opP->mode!=IMMED)
- losing++;
- break;
+static void
+opt_chip (arg, on)
+ int arg;
+ int on;
+{
+ if (*input_line_pointer != '=')
+ {
+ /* This is just OPT P, which we do not support. */
+ return;
+ }
- case 'l':
- case 'L':
- if(opP->mode==DREG || opP->mode==AREG || opP->mode==FPREG) {
- if(s[1]=='8')
- losing++;
- else {
- opP->mode=REGLST;
- opP->reg=1<<(opP->reg-DATA);
- }
- } else if(opP->mode!=REGLST) {
- losing++;
- } else if(s[1]=='8' && opP->reg&0x0FFffFF)
- losing++;
- else if(s[1]=='3' && opP->reg&0x7000000)
- losing++;
- break;
+ ++input_line_pointer;
+ mri_chip ();
+}
- case 'M':
- if(opP->mode!=IMMED)
- losing++;
- else {
- long t;
-
- t=get_num(opP->con1,80);
- if(!issbyte(t) || isvar(opP->con1))
- losing++;
- }
- break;
+/* Handle the OPT S option. */
- case 'O':
- if(opP->mode!=DREG && opP->mode!=IMMED)
- losing++;
- break;
+static void
+opt_list (arg, on)
+ int arg;
+ int on;
+{
+ listing_list (on);
+}
- case 'Q':
- if(opP->mode!=IMMED)
- losing++;
- else {
- long t;
-
- t=get_num(opP->con1,80);
- if(t<1 || t>8 || isvar(opP->con1))
- losing++;
- }
- break;
+/* Handle the OPT T option. */
- case 'R':
- if(opP->mode!=DREG && opP->mode!=AREG)
- losing++;
- break;
+static void
+opt_list_symbols (arg, on)
+ int arg;
+ int on;
+{
+ if (on)
+ listing |= LISTING_SYMBOLS;
+ else
+ listing &=~ LISTING_SYMBOLS;
+}
- case 'r':
- if (opP->mode!=AINDR && opP->mode!=DINDR)
- losing++;
- break;
+/* Handle the MRI REG pseudo-op. */
- case 's':
- if(opP->mode!=MSCR || !(opP->reg==FPI || opP->reg==FPS || opP->reg==FPC))
- losing++;
- break;
+static void
+s_reg (ignore)
+ int ignore;
+{
+ char *s;
+ int c;
+ struct m68k_op rop;
+ unsigned long mask;
+ char *stop = NULL;
+ char stopc;
+
+ if (line_label == NULL)
+ {
+ as_bad ("missing label");
+ ignore_rest_of_line ();
+ return;
+ }
- case 'S':
- if(opP->mode!=MSCR || opP->reg!=SR)
- losing++;
- break;
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
- case 't':
- if (opP->mode != IMMED)
- losing++;
- else
- {
- long t = get_num (opP->con1, 80);
- if (t < 0 || t > 7 || isvar (opP->con1))
- losing++;
- }
- break;
+ SKIP_WHITESPACE ();
- case 'U':
- if(opP->mode!=MSCR || opP->reg!=USP)
- losing++;
- break;
+ s = input_line_pointer;
+ while (isalnum ((unsigned char) *input_line_pointer)
+#ifdef REGISTER_PREFIX
+ || *input_line_pointer == REGISTER_PREFIX
+#endif
+ || *input_line_pointer == '/'
+ || *input_line_pointer == '-')
+ ++input_line_pointer;
+ c = *input_line_pointer;
+ *input_line_pointer = '\0';
- /* JF these are out of order. We could put them
- in order if we were willing to put up with
- bunches of #ifdef m68851s in the code.
+ if (m68k_ip_op (s, &rop) != 0)
+ {
+ if (rop.error == NULL)
+ as_bad ("bad register list");
+ else
+ as_bad ("bad register list: %s", rop.error);
+ *input_line_pointer = c;
+ ignore_rest_of_line ();
+ return;
+ }
- Don't forget that you need these operands
- to use 68030 MMU instructions. */
-#ifndef NO_68851
- /* Memory addressing mode used by pflushr */
- case '|':
- if(opP->mode==MSCR || opP->mode==DREG ||
- opP->mode==AREG || opP->mode==REGLST)
- losing++;
- break;
+ *input_line_pointer = c;
+
+ if (rop.mode == REGLST)
+ mask = rop.mask;
+ else if (rop.mode == DREG)
+ mask = 1 << (rop.reg - DATA0);
+ else if (rop.mode == AREG)
+ mask = 1 << (rop.reg - ADDR0 + 8);
+ else if (rop.mode == FPREG)
+ mask = 1 << (rop.reg - FP0 + 16);
+ else if (rop.mode == CONTROL
+ && rop.reg == FPI)
+ mask = 1 << 24;
+ else if (rop.mode == CONTROL
+ && rop.reg == FPS)
+ mask = 1 << 25;
+ else if (rop.mode == CONTROL
+ && rop.reg == FPC)
+ mask = 1 << 26;
+ else
+ {
+ as_bad ("bad register list");
+ ignore_rest_of_line ();
+ return;
+ }
- case 'f':
- if (opP->mode != MSCR || (opP->reg != SFC && opP->reg != DFC))
- losing++;
- break;
+ S_SET_SEGMENT (line_label, absolute_section);
+ S_SET_VALUE (line_label, mask);
+ line_label->sy_frag = &zero_address_frag;
- case 'P':
- if (opP->mode != MSCR
- || (opP->reg != TC && opP->reg != CAL
- && opP->reg != VAL && opP->reg != SCC && opP->reg != AC))
- losing++;
- break;
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
- case 'V':
- if (opP->reg != VAL)
- losing++;
- break;
+ demand_empty_rest_of_line ();
+}
- case 'W':
- if (opP->mode != MSCR
- || (opP->reg != DRP && opP->reg != SRP
- && opP->reg != CRP))
- losing++;
- break;
+/* This structure is used for the MRI SAVE and RESTORE pseudo-ops. */
- case 'X':
- if (opP->mode != MSCR ||
- (!(opP->reg >= BAD && opP->reg <= BAD+7) &&
- !(opP->reg >= BAC && opP->reg <= BAC+7)))
- losing++;
- break;
+struct save_opts
+{
+ struct save_opts *next;
+ int abspcadd;
+ int symbols_case_sensitive;
+ int keep_locals;
+ int short_refs;
+ int architecture;
+ int quick;
+ int rel32;
+ int listing;
+ int no_warnings;
+ /* FIXME: We don't save OPT S. */
+};
- case 'Y':
- if (opP->reg != PSR)
- losing++;
- break;
+/* This variable holds the stack of saved options. */
- case 'Z':
- if (opP->reg != PCSR)
- losing++;
- break;
-#endif
- case 'c':
- if (opP->reg != NC
- && opP->reg != IC
- && opP->reg != DC
- && opP->reg != BC) {
- losing++;
- } /* not a cache specifier. */
- break;
+static struct save_opts *save_stack;
- case '_':
- if (opP->mode != ABSL) {
- ++losing;
- } /* not absolute */
- break;
+/* The MRI SAVE pseudo-op. */
+
+static void
+s_save (ignore)
+ int ignore;
+{
+ struct save_opts *s;
+
+ s = (struct save_opts *) xmalloc (sizeof (struct save_opts));
+ s->abspcadd = m68k_abspcadd;
+ s->symbols_case_sensitive = symbols_case_sensitive;
+ s->keep_locals = flag_keep_locals;
+ s->short_refs = flag_short_refs;
+ s->architecture = current_architecture;
+ s->quick = m68k_quick;
+ s->rel32 = m68k_rel32;
+ s->listing = listing;
+ s->no_warnings = flag_no_warnings;
+
+ s->next = save_stack;
+ save_stack = s;
+
+ demand_empty_rest_of_line ();
+}
+
+/* The MRI RESTORE pseudo-op. */
+
+static void
+s_restore (ignore)
+ int ignore;
+{
+ struct save_opts *s;
+
+ if (save_stack == NULL)
+ {
+ as_bad ("restore without save");
+ ignore_rest_of_line ();
+ return;
+ }
+
+ s = save_stack;
+ save_stack = s->next;
+
+ m68k_abspcadd = s->abspcadd;
+ symbols_case_sensitive = s->symbols_case_sensitive;
+ flag_keep_locals = s->keep_locals;
+ flag_short_refs = s->short_refs;
+ current_architecture = s->architecture;
+ m68k_quick = s->quick;
+ m68k_rel32 = s->rel32;
+ listing = s->listing;
+ flag_no_warnings = s->no_warnings;
+
+ free (s);
+
+ demand_empty_rest_of_line ();
+}
+
+/* Types of MRI structured control directives. */
+
+enum mri_control_type
+{
+ mri_for,
+ mri_if,
+ mri_repeat,
+ mri_while
+};
- default:
- as_fatal("Internal error: Operand mode %c unknown in line %d of file \"%s\"",
- *s, __LINE__, __FILE__);
- } /* switch on type of operand */
+/* This structure is used to stack the MRI structured control
+ directives. */
- if (losing)
- break;
- } /* for each operand */
- } /* if immediately wrong */
+struct mri_control_info
+{
+ /* The directive within which this one is enclosed. */
+ struct mri_control_info *outer;
- if (!losing) {
- break;
- } /* got it. */
+ /* The type of directive. */
+ enum mri_control_type type;
- opcode = opcode->m_next;
+ /* Whether an ELSE has been in an IF. */
+ int else_seen;
- if (!opcode) {
- if (ok_arch
- && !(ok_arch & current_architecture))
- {
- char buf[200], *cp;
- int len;
- strcpy (buf, "invalid instruction for this architecture; needs ");
- cp = buf + strlen (buf);
- switch (ok_arch)
- {
- case mfloat:
- strcpy (cp, "fpu (68040 or 68881/68882)");
- break;
- case mmmu:
- strcpy (cp, "mmu (68030 or 68851)");
- break;
- case m68020up:
- strcpy (cp, "68020 or higher");
- break;
- case m68000up:
- strcpy (cp, "68000 or higher");
- break;
- case m68010up:
- strcpy (cp, "68010 or higher");
- break;
- default:
- {
- int got_one = 0, idx;
- const static struct {
- enum m68k_architecture arch;
- const char *name;
- } archs[] = {
- m68000, "68000",
- m68010, "68010",
- m68020, "68020",
- m68030, "68030",
- m68040, "68040",
- m68881, "68881",
- m68851, "68851",
- };
- for (idx = 0; idx < sizeof (archs)/sizeof (archs[0]); idx++)
- {
- if (archs[idx].arch & ok_arch)
- {
- if (got_one)
- {
- strcpy (cp, " or ");
- cp += strlen (cp);
- }
- got_one = 1;
- strcpy (cp, archs[idx].name);
- cp += strlen (cp);
- }
- }
- }
- }
- len = cp - buf + 1;
- cp = malloc (len);
- strcpy (cp, buf);
- the_ins.error = cp;
- }
- else
- the_ins.error = "operands mismatch";
- return;
- } /* Fell off the end */
+ /* The add or sub statement at the end of a FOR. */
+ char *incr;
- losing = 0;
- }
+ /* The label of the top of a FOR or REPEAT loop. */
+ char *top;
- /* now assemble it */
+ /* The label to jump to for the next iteration, or the else
+ expression of a conditional. */
+ char *next;
- the_ins.args=opcode->m_operands;
- the_ins.numargs=opcode->m_opnum;
- the_ins.numo=opcode->m_codenum;
- the_ins.opcode[0]=getone(opcode);
- the_ins.opcode[1]=gettwo(opcode);
+ /* The label to jump to to break out of the loop, or the label past
+ the end of a conditional. */
+ char *bottom;
+};
- for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++) {
- /* This switch is a doozy.
- Watch the first step; its a big one! */
- switch(s[0]) {
-
- case '*':
- case '~':
- case '%':
- case ';':
- case '@':
- case '!':
- case '&':
- case '$':
- case '?':
- case '/':
-#ifndef NO_68851
- case '|':
-#endif
- switch(opP->mode) {
- case IMMED:
- tmpreg=0x3c; /* 7.4 */
- if (strchr("bwl",s[1])) nextword=get_num(opP->con1,80);
- else nextword=nextword=get_num(opP->con1,0);
- if(isvar(opP->con1))
- add_fix(s[1],opP->con1,0);
- switch(s[1]) {
- case 'b':
- if(!isbyte(nextword))
- opP->error="operand out of range";
- addword(nextword);
- baseo=0;
- break;
- case 'w':
- if(!isword(nextword))
- opP->error="operand out of range";
- addword(nextword);
- baseo=0;
- break;
- case 'l':
- addword(nextword>>16);
- addword(nextword);
- baseo=0;
- break;
+/* The stack of MRI structured control directives. */
- case 'f':
- baseo=2;
- outro=8;
- break;
- case 'F':
- baseo=4;
- outro=11;
- break;
- case 'x':
- baseo=6;
- outro=15;
- break;
- case 'p':
- baseo=6;
- outro= -1;
- break;
- default:
- as_fatal("Internal error: Can't decode %c%c in line %s of file \"%s\"",
- *s, s[1], __LINE__, __FILE__);
- }
- if(!baseo)
- break;
+static struct mri_control_info *mri_control_stack;
- /* We gotta put out some float */
- if(seg(opP->con1)!=SEG_BIG) {
- int_to_gen(nextword);
- gen_to_words(words,baseo,(long int)outro);
- for(wordp=words;baseo--;wordp++)
- addword(*wordp);
- break;
- } /* Its BIG */
- if(offs(opP->con1)>0) {
- as_warn("Bignum assumed to be binary bit-pattern");
- if(offs(opP->con1)>baseo) {
- as_warn("Bignum too big for %c format; truncated",s[1]);
- offs(opP->con1)=baseo;
- }
- baseo-=offs(opP->con1);
- for(wordp=generic_bignum+offs(opP->con1)-1;offs(opP->con1)--;--wordp)
- addword(*wordp);
- while(baseo--)
- addword(0);
- break;
- }
- gen_to_words(words,baseo,(long)outro);
- for (wordp=words;baseo--;wordp++)
- addword(*wordp);
- break;
- case DREG:
- tmpreg=opP->reg-DATA; /* 0.dreg */
- break;
- case AREG:
- tmpreg=0x08+opP->reg-ADDR; /* 1.areg */
- break;
- case AINDR:
- tmpreg=0x10+opP->reg-ADDR; /* 2.areg */
- break;
- case ADEC:
- tmpreg=0x20+opP->reg-ADDR; /* 4.areg */
- break;
- case AINC:
- tmpreg=0x18+opP->reg-ADDR; /* 3.areg */
- break;
- case AOFF:
-
- nextword=get_num(opP->con1,80);
- /* Force into index mode. Hope this works */
-
- /* We do the first bit for 32-bit displacements,
- and the second bit for 16 bit ones. It is
- possible that we should make the default be
- WORD instead of LONG, but I think that'd
- break GCC, so we put up with a little
- inefficiency for the sake of working output.
- */
-
- if( !issword(nextword)
- || ( isvar(opP->con1)
- && ( ( opP->con1->e_siz==0
- && flagseen['l']==0)
- || opP->con1->e_siz==3))) {
-
- if(opP->reg==PC)
- tmpreg=0x3B; /* 7.3 */
- else
- tmpreg=0x30+opP->reg-ADDR; /* 6.areg */
- if(isvar(opP->con1)) {
- if(opP->reg==PC) {
- add_frag(adds(opP->con1),
- offs(opP->con1),
- TAB(PCLEA,SZ_UNDEF));
- break;
- } else {
- addword(0x0170);
- add_fix('l',opP->con1,0);
- }
- } else
- addword(0x0170);
- addword(nextword>>16);
- } else {
- if(opP->reg==PC)
- tmpreg=0x3A; /* 7.2 */
- else
- tmpreg=0x28+opP->reg-ADDR; /* 5.areg */
-
- if(isvar(opP->con1)) {
- if(opP->reg==PC) {
- add_fix('w',opP->con1,1);
- } else
- add_fix('w',opP->con1,0);
- }
- }
- addword(nextword);
- break;
+/* The current MRI structured control directive index number, used to
+ generate label names. */
- case APODX:
- case AMIND:
- case APRDX:
- know(current_architecture & m68020up);
- /* intentional fall-through */
- case AINDX:
- nextword=0;
- baseo=get_num(opP->con1,80);
- outro=get_num(opP->con2,80);
- /* Figure out the 'addressing mode' */
- /* Also turn on the BASE_DISABLE bit, if needed */
- if(opP->reg==PC || opP->reg==ZPC) {
- tmpreg=0x3b; /* 7.3 */
- if(opP->reg==ZPC)
- nextword|=0x80;
- } else if(opP->reg==FAIL) {
- nextword|=0x80;
- tmpreg=0x30; /* 6.garbage */
- } else tmpreg=0x30+opP->reg-ADDR; /* 6.areg */
-
- siz1= (opP->con1) ? opP->con1->e_siz : 0;
- siz2= (opP->con2) ? opP->con2->e_siz : 0;
-
- /* Index register stuff */
- if(opP->ireg>=DATA+0 && opP->ireg<=ADDR+7) {
- nextword|=(opP->ireg-DATA)<<12;
-
- if(opP->isiz==0 || opP->isiz==3)
- nextword|=0x800;
- switch(opP->imul) {
- case 1: break;
- case 2: nextword|=0x200; break;
- case 4: nextword|=0x400; break;
- case 8: nextword|=0x600; break;
- default: as_fatal("failed sanity check.");
- }
- /* IF its simple,
- GET US OUT OF HERE! */
-
- /* Must be INDEX, with an index
- register. Address register
- cannot be ZERO-PC, and either
- :b was forced, or we know
- it will fit */
- if( opP->mode==AINDX
- && opP->reg!=FAIL
- && opP->reg!=ZPC
- && ( siz1==1
- || ( issbyte(baseo)
- && !isvar(opP->con1)))) {
- nextword +=baseo&0xff;
- addword(nextword);
- if(isvar(opP->con1))
- add_fix('B',opP->con1,0);
- break;
- }
- } else
- nextword|=0x40; /* No index reg */
-
- /* It aint simple */
- nextword|=0x100;
- /* If the guy specified a width, we assume that
- it is wide enough. Maybe it isn't. If so, we lose
- */
- switch(siz1) {
- case 0:
- if(isvar(opP->con1) || !issword(baseo)) {
- siz1=3;
- nextword|=0x30;
- } else if(baseo==0)
- nextword|=0x10;
- else {
- nextword|=0x20;
- siz1=2;
- }
- break;
- case 1:
- as_warn("Byte dispacement won't work. Defaulting to :w");
- case 2:
- nextword|=0x20;
- break;
- case 3:
- nextword|=0x30;
- break;
- }
+static int mri_control_index;
- /* Figure out innner displacement stuff */
- if(opP->mode!=AINDX) {
- switch(siz2) {
- case 0:
- if(isvar(opP->con2) || !issword(outro)) {
- siz2=3;
- nextword|=0x3;
- } else if(outro==0)
- nextword|=0x1;
- else {
- nextword|=0x2;
- siz2=2;
- }
- break;
- case 1:
- as_warn("Byte dispacement won't work. Defaulting to :w");
- case 2:
- nextword|=0x2;
- break;
- case 3:
- nextword|=0x3;
- break;
- }
- if(opP->mode==APODX) nextword|=0x04;
- else if(opP->mode==AMIND) nextword|=0x40;
- }
- addword(nextword);
-
- if(isvar(opP->con1)) {
- if(opP->reg==PC || opP->reg==ZPC) {
- add_fix(siz1==3 ? 'l' : 'w',opP->con1,1);
- opP->con1->e_exp.X_add_number+=6;
- } else
- add_fix(siz1==3 ? 'l' : 'w',opP->con1,0);
- }
- if(siz1==3)
- addword(baseo>>16);
- if(siz1)
- addword(baseo);
-
- if(isvar(opP->con2)) {
- if(opP->reg==PC || opP->reg==ZPC) {
- add_fix(siz2==3 ? 'l' : 'w',opP->con2,1);
- opP->con1->e_exp.X_add_number+=6;
- } else
- add_fix(siz2==3 ? 'l' : 'w',opP->con2,0);
- }
- if(siz2==3)
- addword(outro>>16);
- if(siz2)
- addword(outro);
+/* Some function prototypes. */
- break;
+static char *mri_control_label PARAMS ((void));
+static struct mri_control_info *push_mri_control
+ PARAMS ((enum mri_control_type));
+static void pop_mri_control PARAMS ((void));
+static int parse_mri_condition PARAMS ((int *));
+static int parse_mri_control_operand
+ PARAMS ((int *, char **, char **, char **, char **));
+static int swap_mri_condition PARAMS ((int));
+static int reverse_mri_condition PARAMS ((int));
+static void build_mri_control_operand
+ PARAMS ((int, int, char *, char *, char *, char *, const char *,
+ const char *, int));
+static void parse_mri_control_expression
+ PARAMS ((char *, int, const char *, const char *, int));
- case ABSL:
- nextword=get_num(opP->con1,80);
- switch(opP->con1->e_siz) {
- default:
- as_warn("Unknown size for absolute reference");
- case 0:
- if(!isvar(opP->con1) && issword(offs(opP->con1))) {
- tmpreg=0x38; /* 7.0 */
- addword(nextword);
- break;
- }
- /* Don't generate pc relative code
- on 68010 and 68000 */
- if(isvar(opP->con1)
- && !subs(opP->con1)
- && seg(opP->con1) == SEG_TEXT
- && now_seg == SEG_TEXT
- && cpu_of_arch(current_architecture) >= m68020
- && !flagseen['S']
- && !strchr("~%&$?", s[0])) {
- tmpreg=0x3A; /* 7.2 */
- add_frag(adds(opP->con1),
- offs(opP->con1),
- TAB(PCREL,SZ_UNDEF));
- break;
- }
- case 3: /* Fall through into long */
- if(isvar(opP->con1))
- add_fix('l',opP->con1,0);
+/* Generate a new MRI label structured control directive label name. */
- tmpreg=0x39; /* 7.1 mode */
- addword(nextword>>16);
- addword(nextword);
- break;
+static char *
+mri_control_label ()
+{
+ char *n;
- case 2: /* Word */
- if(isvar(opP->con1))
- add_fix('w',opP->con1,0);
+ n = (char *) xmalloc (20);
+ sprintf (n, "%smc%d", FAKE_LABEL_NAME, mri_control_index);
+ ++mri_control_index;
+ return n;
+}
- tmpreg=0x38; /* 7.0 mode */
- addword(nextword);
- break;
- }
- break;
- case DINDR:
- as_bad("invalid indirect register");
- break;
- case MSCR:
- default:
- as_bad("unknown/incorrect operand");
- /* abort(); */
- }
- install_gen_operand(s[1],tmpreg);
- break;
+/* Create a new MRI structured control directive. */
- case '#':
- case '^':
- switch(s[1]) { /* JF: I hate floating point! */
- case 'j':
- tmpreg=70;
- break;
- case '8':
- tmpreg=20;
- break;
- case 'C':
- tmpreg=50;
- break;
- case '3':
- default:
- tmpreg=80;
- break;
- }
- tmpreg=get_num(opP->con1,tmpreg);
- if(isvar(opP->con1))
- add_fix(s[1],opP->con1,0);
- switch(s[1]) {
- case 'b': /* Danger: These do no check for
- certain types of overflow.
- user beware! */
- if(!isbyte(tmpreg))
- opP->error="out of range";
- insop(tmpreg);
- if(isvar(opP->con1))
- the_ins.reloc[the_ins.nrel-1].n=(opcode->m_codenum)*2;
- break;
- case 'w':
- if(!isword(tmpreg))
- opP->error="out of range";
- insop(tmpreg);
- if(isvar(opP->con1))
- the_ins.reloc[the_ins.nrel-1].n=(opcode->m_codenum)*2;
- break;
- case 'l':
- insop(tmpreg); /* Because of the way insop works, we put these two out backwards */
- insop(tmpreg>>16);
- if(isvar(opP->con1))
- the_ins.reloc[the_ins.nrel-1].n=(opcode->m_codenum)*2;
- break;
- case '3':
- tmpreg&=0xFF;
- case '8':
- case 'C':
- install_operand(s[1],tmpreg);
- break;
- default:
- as_fatal("Internal error: Unknown mode #%c in line %s of file \"%s\"", s[1], __LINE__, __FILE__);
- }
- break;
+static struct mri_control_info *
+push_mri_control (type)
+ enum mri_control_type type;
+{
+ struct mri_control_info *n;
- case '+':
- case '-':
- case 'A':
- case 'a':
- install_operand(s[1],opP->reg-ADDR);
- break;
+ n = (struct mri_control_info *) xmalloc (sizeof (struct mri_control_info));
- case 'B':
- tmpreg=get_num(opP->con1,80);
- switch(s[1]) {
- case 'B':
- /* Needs no offsetting */
- add_fix('B',opP->con1,1);
- break;
- case 'W':
- /* Offset the displacement to be relative to byte disp location */
- opP->con1->e_exp.X_add_number+=2;
- add_fix('w',opP->con1,1);
- addword(0);
- break;
- case 'L':
- long_branch:
- if (cpu_of_arch(current_architecture) < m68020) /* 68000 or 010 */
- as_warn("Can't use long branches on 68000/68010");
- the_ins.opcode[the_ins.numo-1]|=0xff;
- /* Offset the displacement to be relative to byte disp location */
- opP->con1->e_exp.X_add_number+=4;
- add_fix('l',opP->con1,1);
- addword(0);
- addword(0);
- break;
- case 'g':
- if(subs(opP->con1)) /* We can't relax it */
- goto long_branch;
-
- /* This could either be a symbol, or an
- absolute address. No matter, the
- frag hacking will finger it out.
- Not quite: it can't switch from
- BRANCH to BCC68000 for the case
- where opnd is absolute (it needs
- to use the 68000 hack since no
- conditional abs jumps). */
- if (((cpu_of_arch(current_architecture) < m68020) || (0==adds(opP->con1)))
- && (the_ins.opcode[0] >= 0x6200)
- && (the_ins.opcode[0] <= 0x6f00)) {
- add_frag(adds(opP->con1),offs(opP->con1),TAB(BCC68000,SZ_UNDEF));
- } else {
- add_frag(adds(opP->con1),offs(opP->con1),TAB(ABRANCH,SZ_UNDEF));
- }
- break;
- case 'w':
- if(isvar(opP->con1)) {
- /* check for DBcc instruction */
- if ((the_ins.opcode[0] & 0xf0f8) ==0x50c8) {
- /* size varies if patch */
- /* needed for long form */
- add_frag(adds(opP->con1),offs(opP->con1),TAB(DBCC,SZ_UNDEF));
- break;
- }
+ n->type = type;
+ n->else_seen = 0;
+ if (type == mri_if || type == mri_while)
+ n->top = NULL;
+ else
+ n->top = mri_control_label ();
+ n->next = mri_control_label ();
+ n->bottom = mri_control_label ();
- /* Don't ask! */
- opP->con1->e_exp.X_add_number+=2;
- add_fix('w',opP->con1,1);
- }
- addword(0);
- break;
- case 'C': /* Fixed size LONG coproc branches */
- the_ins.opcode[the_ins.numo-1]|=0x40;
- /* Offset the displacement to be relative to byte disp location */
- /* Coproc branches don't have a byte disp option, but they are
- compatible with the ordinary branches, which do... */
- opP->con1->e_exp.X_add_number+=4;
- add_fix('l',opP->con1,1);
- addword(0);
- addword(0);
- break;
- case 'c': /* Var size Coprocesssor branches */
- if(subs(opP->con1)) {
- add_fix('l',opP->con1,1);
- add_frag((symbolS *)0,(long)0,TAB(FBRANCH,LONG));
- } else if(adds(opP->con1)) {
- add_frag(adds(opP->con1),offs(opP->con1),TAB(FBRANCH,SZ_UNDEF));
- } else {
- /* add_frag((symbolS *)0,offs(opP->con1),TAB(FBRANCH,SHORT)); */
- the_ins.opcode[the_ins.numo-1]|=0x40;
- add_fix('l',opP->con1,1);
- addword(0);
- addword(4);
- }
- break;
- default:
- as_fatal("Internal error: operand type B%c unknown in line %s of file \"%s\"",
- s[1], __LINE__, __FILE__);
- }
- break;
+ n->outer = mri_control_stack;
+ mri_control_stack = n;
- case 'C': /* Ignore it */
- break;
+ return n;
+}
- case 'd': /* JF this is a kludge */
- if(opP->mode==AOFF) {
- install_operand('s',opP->reg-ADDR);
- } else {
- char *tmpP;
-
- tmpP=opP->con1->e_end-2;
- opP->con1->e_beg++;
- opP->con1->e_end-=4; /* point to the , */
- baseo=m68k_reg_parse(&tmpP);
- if(baseo<ADDR+0 || baseo>ADDR+7) {
- as_bad("Unknown address reg, using A0");
- baseo=0;
- } else baseo-=ADDR;
- install_operand('s',baseo);
- }
- tmpreg=get_num(opP->con1,80);
- if(!issword(tmpreg)) {
- as_warn("Expression out of range, using 0");
- tmpreg=0;
- }
- addword(tmpreg);
- break;
+/* Pop off the stack of MRI structured control directives. */
- case 'D':
- install_operand(s[1],opP->reg-DATA);
- break;
+static void
+pop_mri_control ()
+{
+ struct mri_control_info *n;
+
+ n = mri_control_stack;
+ mri_control_stack = n->outer;
+ if (n->top != NULL)
+ free (n->top);
+ free (n->next);
+ free (n->bottom);
+ free (n);
+}
- case 'F':
- install_operand(s[1],opP->reg-FPREG);
- break;
+/* Recognize a condition code in an MRI structured control expression. */
- case 'I':
- tmpreg=1+opP->reg-COPNUM;
- if(tmpreg==8)
- tmpreg=0;
- install_operand(s[1],tmpreg);
- break;
+static int
+parse_mri_condition (pcc)
+ int *pcc;
+{
+ char c1, c2;
- case 'J': /* JF foo */
- switch(opP->reg) {
- case SFC: tmpreg=0x000; break;
- case DFC: tmpreg=0x001; break;
- case CACR: tmpreg=0x002; break;
- case TC: tmpreg=0x003; break;
- case ITT0: tmpreg=0x004; break;
- case ITT1: tmpreg=0x005; break;
- case DTT0: tmpreg=0x006; break;
- case DTT1: tmpreg=0x007; break;
-
- case USP: tmpreg=0x800; break;
- case VBR: tmpreg=0x801; break;
- case CAAR: tmpreg=0x802; break;
- case MSP: tmpreg=0x803; break;
- case ISP: tmpreg=0x804; break;
- case MMUSR: tmpreg=0x805; break;
- case URP: tmpreg=0x806; break;
- case SRP: tmpreg=0x807; break;
- default:
- as_fatal("failed sanity check.");
- }
- install_operand(s[1],tmpreg);
- break;
+ know (*input_line_pointer == '<');
- case 'k':
- tmpreg=get_num(opP->con1,55);
- install_operand(s[1],tmpreg&0x7f);
- break;
+ ++input_line_pointer;
+ c1 = *input_line_pointer++;
+ c2 = *input_line_pointer++;
- case 'l':
- tmpreg=opP->reg;
- if(s[1]=='w') {
- if(tmpreg&0x7FF0000)
- as_bad("Floating point register in register list");
- insop(reverse_16_bits(tmpreg));
- } else {
- if(tmpreg&0x700FFFF)
- as_bad("Wrong register in floating-point reglist");
- install_operand(s[1],reverse_8_bits(tmpreg>>16));
- }
- break;
+ if (*input_line_pointer != '>')
+ {
+ as_bad ("syntax error in structured control directive");
+ return 0;
+ }
- case 'L':
- tmpreg=opP->reg;
- if(s[1]=='w') {
- if(tmpreg&0x7FF0000)
- as_bad("Floating point register in register list");
- insop(tmpreg);
- } else if(s[1]=='8') {
- if(tmpreg&0x0FFFFFF)
- as_bad("incorrect register in reglist");
- install_operand(s[1],tmpreg>>24);
- } else {
- if(tmpreg&0x700FFFF)
- as_bad("wrong register in floating-point reglist");
- else
- install_operand(s[1],tmpreg>>16);
- }
- break;
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
- case 'M':
- install_operand(s[1],get_num(opP->con1,60));
- break;
+ if (isupper (c1))
+ c1 = tolower (c1);
+ if (isupper (c2))
+ c2 = tolower (c2);
- case 'O':
- tmpreg= (opP->mode==DREG)
- ? 0x20+opP->reg-DATA
- : (get_num(opP->con1,40)&0x1F);
- install_operand(s[1],tmpreg);
- break;
+ *pcc = (c1 << 8) | c2;
- case 'Q':
- tmpreg=get_num(opP->con1,10);
- if(tmpreg==8)
- tmpreg=0;
- install_operand(s[1],tmpreg);
- break;
+ return 1;
+}
- case 'R':
- case 'r':
- /* This depends on the fact that ADDR registers are
- eight more than their corresponding DATA regs, so
- the result will have the ADDR_REG bit set */
- install_operand(s[1],opP->reg-DATA);
- break;
+/* Parse a single operand in an MRI structured control expression. */
- case 's':
- if(opP->reg==FPI) tmpreg=0x1;
- else if(opP->reg==FPS) tmpreg=0x2;
- else if(opP->reg==FPC) tmpreg=0x4;
- else as_fatal("failed sanity check.");
- install_operand(s[1],tmpreg);
- break;
+static int
+parse_mri_control_operand (pcc, leftstart, leftstop, rightstart, rightstop)
+ int *pcc;
+ char **leftstart;
+ char **leftstop;
+ char **rightstart;
+ char **rightstop;
+{
+ char *s;
- case 'S': /* Ignore it */
- break;
+ SKIP_WHITESPACE ();
- case 'T':
- install_operand(s[1],get_num(opP->con1,30));
- break;
+ *pcc = -1;
+ *leftstart = NULL;
+ *leftstop = NULL;
+ *rightstart = NULL;
+ *rightstop = NULL;
- case 'U': /* Ignore it */
- break;
+ if (*input_line_pointer == '<')
+ {
+ /* It's just a condition code. */
+ return parse_mri_condition (pcc);
+ }
- case 'c':
- switch (opP->reg) {
- case NC: tmpreg = 0; break;
- case DC: tmpreg = 1; break;
- case IC: tmpreg = 2; break;
- case BC: tmpreg = 3; break;
- default:
- as_fatal("failed sanity check");
- } /* switch on cache token */
- install_operand(s[1], tmpreg);
- break;
-#ifndef NO_68851
- /* JF: These are out of order, I fear. */
- case 'f':
- switch (opP->reg) {
- case SFC:
- tmpreg=0;
- break;
- case DFC:
- tmpreg=1;
+ /* Look ahead for the condition code. */
+ for (s = input_line_pointer; *s != '\0'; ++s)
+ {
+ if (*s == '<' && s[1] != '\0' && s[2] != '\0' && s[3] == '>')
break;
- default:
- as_fatal("failed sanity check.");
- }
- install_operand(s[1],tmpreg);
- break;
+ }
+ if (*s == '\0')
+ {
+ as_bad ("missing condition code in structured control directive");
+ return 0;
+ }
- case 'P':
- switch(opP->reg) {
- case TC:
- tmpreg=0;
- break;
- case CAL:
- tmpreg=4;
- break;
- case VAL:
- tmpreg=5;
- break;
- case SCC:
- tmpreg=6;
- break;
- case AC:
- tmpreg=7;
- break;
- default:
- as_fatal("failed sanity check.");
- }
- install_operand(s[1],tmpreg);
- break;
+ *leftstart = input_line_pointer;
+ *leftstop = s;
+ if (*leftstop > *leftstart
+ && ((*leftstop)[-1] == ' ' || (*leftstop)[-1] == '\t'))
+ --*leftstop;
- case 'V':
- if (opP->reg == VAL)
+ input_line_pointer = s;
+ if (! parse_mri_condition (pcc))
+ return 0;
+
+ /* Look ahead for AND or OR or end of line. */
+ for (s = input_line_pointer; *s != '\0'; ++s)
+ {
+ if ((strncasecmp (s, "AND", 3) == 0
+ && (s[3] == '.' || ! is_part_of_name (s[3])))
+ || (strncasecmp (s, "OR", 2) == 0
+ && (s[2] == '.' || ! is_part_of_name (s[2]))))
break;
- as_fatal("failed sanity check.");
+ }
- case 'W':
- switch(opP->reg) {
+ *rightstart = input_line_pointer;
+ *rightstop = s;
+ if (*rightstop > *rightstart
+ && ((*rightstop)[-1] == ' ' || (*rightstop)[-1] == '\t'))
+ --*rightstop;
- case DRP:
- tmpreg=1;
- break;
- case SRP:
- tmpreg=2;
- break;
- case CRP:
- tmpreg=3;
- break;
- default:
- as_fatal("failed sanity check.");
- }
- install_operand(s[1],tmpreg);
- break;
+ input_line_pointer = s;
- case 'X':
- switch (opP->reg) {
- case BAD: case BAD+1: case BAD+2: case BAD+3:
- case BAD+4: case BAD+5: case BAD+6: case BAD+7:
- tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
- break;
+ return 1;
+}
- case BAC: case BAC+1: case BAC+2: case BAC+3:
- case BAC+4: case BAC+5: case BAC+6: case BAC+7:
- tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
- break;
+#define MCC(b1, b2) (((b1) << 8) | (b2))
- default:
- as_fatal("failed sanity check.");
- }
- install_operand(s[1], tmpreg);
- break;
- case 'Y':
- know(opP->reg == PSR);
- break;
- case 'Z':
- know(opP->reg == PCSR);
- break;
-#endif /* m68851 */
- case '3':
- switch (opP->reg)
+/* Swap the sense of a condition. This changes the condition so that
+ it generates the same result when the operands are swapped. */
+
+static int
+swap_mri_condition (cc)
+ int cc;
+{
+ switch (cc)
+ {
+ case MCC ('h', 'i'): return MCC ('c', 's');
+ case MCC ('l', 's'): return MCC ('c', 'c');
+ case MCC ('c', 'c'): return MCC ('l', 's');
+ case MCC ('c', 's'): return MCC ('h', 'i');
+ case MCC ('p', 'l'): return MCC ('m', 'i');
+ case MCC ('m', 'i'): return MCC ('p', 'l');
+ case MCC ('g', 'e'): return MCC ('l', 'e');
+ case MCC ('l', 't'): return MCC ('g', 't');
+ case MCC ('g', 't'): return MCC ('l', 't');
+ case MCC ('l', 'e'): return MCC ('g', 'e');
+ }
+ return cc;
+}
+
+/* Reverse the sense of a condition. */
+
+static int
+reverse_mri_condition (cc)
+ int cc;
+{
+ switch (cc)
+ {
+ case MCC ('h', 'i'): return MCC ('l', 's');
+ case MCC ('l', 's'): return MCC ('h', 'i');
+ case MCC ('c', 'c'): return MCC ('c', 's');
+ case MCC ('c', 's'): return MCC ('c', 'c');
+ case MCC ('n', 'e'): return MCC ('e', 'q');
+ case MCC ('e', 'q'): return MCC ('n', 'e');
+ case MCC ('v', 'c'): return MCC ('v', 's');
+ case MCC ('v', 's'): return MCC ('v', 'c');
+ case MCC ('p', 'l'): return MCC ('m', 'i');
+ case MCC ('m', 'i'): return MCC ('p', 'l');
+ case MCC ('g', 'e'): return MCC ('l', 't');
+ case MCC ('l', 't'): return MCC ('g', 'e');
+ case MCC ('g', 't'): return MCC ('l', 'e');
+ case MCC ('l', 'e'): return MCC ('g', 't');
+ }
+ return cc;
+}
+
+/* Build an MRI structured control expression. This generates test
+ and branch instructions. It goes to TRUELAB if the condition is
+ true, and to FALSELAB if the condition is false. Exactly one of
+ TRUELAB and FALSELAB will be NULL, meaning to fall through. QUAL
+ is the size qualifier for the expression. EXTENT is the size to
+ use for the branch. */
+
+static void
+build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
+ rightstop, truelab, falselab, extent)
+ int qual;
+ int cc;
+ char *leftstart;
+ char *leftstop;
+ char *rightstart;
+ char *rightstop;
+ const char *truelab;
+ const char *falselab;
+ int extent;
+{
+ char *buf;
+ char *s;
+
+ if (leftstart != NULL)
+ {
+ struct m68k_op leftop, rightop;
+ char c;
+
+ /* Swap the compare operands, if necessary, to produce a legal
+ m68k compare instruction. Comparing a register operand with
+ a non-register operand requires the register to be on the
+ right (cmp, cmpa). Comparing an immediate value with
+ anything requires the immediate value to be on the left
+ (cmpi). */
+
+ c = *leftstop;
+ *leftstop = '\0';
+ (void) m68k_ip_op (leftstart, &leftop);
+ *leftstop = c;
+
+ c = *rightstop;
+ *rightstop = '\0';
+ (void) m68k_ip_op (rightstart, &rightop);
+ *rightstop = c;
+
+ if (rightop.mode == IMMED
+ || ((leftop.mode == DREG || leftop.mode == AREG)
+ && (rightop.mode != DREG && rightop.mode != AREG)))
{
- case TT0:
- tmpreg = 2;
- break;
- case TT1:
- tmpreg = 3;
- break;
- default:
- as_fatal ("failed sanity check");
+ char *temp;
+
+ cc = swap_mri_condition (cc);
+ temp = leftstart;
+ leftstart = rightstart;
+ rightstart = temp;
+ temp = leftstop;
+ leftstop = rightstop;
+ rightstop = temp;
}
- install_operand (s[1], tmpreg);
- break;
- case 't':
- tmpreg = get_num (opP->con1, 20);
- install_operand (s[1], tmpreg);
- break;
- case '_': /* used only for move16 absolute 32-bit address */
- tmpreg=get_num(opP->con1,80);
- addword (tmpreg >> 16);
- addword (tmpreg & 0xFFFF);
- break;
- default:
- as_fatal("Internal error: Operand type %c unknown in line %d of file \"%s\"",
- s[0], __LINE__, __FILE__);
}
- }
- /* By the time whe get here (FINALLY) the_ins contains the complete
- instruction, ready to be emitted. . . */
-} /* m68k_ip() */
+ if (truelab == NULL)
+ {
+ cc = reverse_mri_condition (cc);
+ truelab = falselab;
+ }
+
+ if (leftstart != NULL)
+ {
+ buf = (char *) xmalloc (20
+ + (leftstop - leftstart)
+ + (rightstop - rightstart));
+ s = buf;
+ *s++ = 'c';
+ *s++ = 'm';
+ *s++ = 'p';
+ if (qual != '\0')
+ *s++ = qual;
+ *s++ = ' ';
+ memcpy (s, leftstart, leftstop - leftstart);
+ s += leftstop - leftstart;
+ *s++ = ',';
+ memcpy (s, rightstart, rightstop - rightstart);
+ s += rightstop - rightstart;
+ *s = '\0';
+ md_assemble (buf);
+ free (buf);
+ }
+
+ buf = (char *) xmalloc (20 + strlen (truelab));
+ s = buf;
+ *s++ = 'b';
+ *s++ = cc >> 8;
+ *s++ = cc & 0xff;
+ if (extent != '\0')
+ *s++ = extent;
+ *s++ = ' ';
+ strcpy (s, truelab);
+ md_assemble (buf);
+ free (buf);
+}
-/*
- * get_regs := '/' + ?
- * | '-' + <register>
- * | '-' + <register> + ?
- * | <empty>
- * ;
- *
+/* Parse an MRI structured control expression. This generates test
+ and branch instructions. STOP is where the expression ends. It
+ goes to TRUELAB if the condition is true, and to FALSELAB if the
+ condition is false. Exactly one of TRUELAB and FALSELAB will be
+ NULL, meaning to fall through. QUAL is the size qualifier for the
+ expression. EXTENT is the size to use for the branch. */
+
+static void
+parse_mri_control_expression (stop, qual, truelab, falselab, extent)
+ char *stop;
+ int qual;
+ const char *truelab;
+ const char *falselab;
+ int extent;
+{
+ int c;
+ int cc;
+ char *leftstart;
+ char *leftstop;
+ char *rightstart;
+ char *rightstop;
+
+ c = *stop;
+ *stop = '\0';
+
+ if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
+ &rightstart, &rightstop))
+ {
+ *stop = c;
+ return;
+ }
- * The idea here must be to scan in a set of registers but I don't
- * understand it. Looks awfully sloppy to me but I don't have any doc on
- * this format so...
+ if (strncasecmp (input_line_pointer, "AND", 3) == 0)
+ {
+ const char *flab;
- *
- *
- */
+ if (falselab != NULL)
+ flab = falselab;
+ else
+ flab = mri_control_label ();
-static int get_regs(i,str,opP)
-int i;
-struct m68k_op *opP;
-char *str;
-{
- /* 26, 25, 24, 23-16, 15-8, 0-7 */
- /* Low order 24 bits encoded fpc,fps,fpi,fp7-fp0,a7-a0,d7-d0 */
- unsigned long cur_regs = 0;
- int reg1,
- reg2;
-
-#define ADD_REG(x) { if(x==FPI) cur_regs|=(1<<24);\
-else if(x==FPS) cur_regs|=(1<<25);\
-else if(x==FPC) cur_regs|=(1<<26);\
-else cur_regs|=(1<<(x-1)); }
-
- reg1=i;
- for(;;) {
- if(*str=='/') {
- ADD_REG(reg1);
- str++;
- } else if(*str=='-') {
- str++;
- reg2=m68k_reg_parse(&str);
- if(reg2<DATA || reg2>=FPREG+8 || reg1==FPI || reg1==FPS || reg1==FPC) {
- opP->error="unknown register in register list";
- return FAIL;
- }
- while(reg1<=reg2) {
- ADD_REG(reg1);
- reg1++;
- }
- if(*str=='\0')
- break;
- } else if(*str=='\0') {
- ADD_REG(reg1);
- break;
- } else {
- opP->error="unknow character in register list";
- return FAIL;
- }
- /* DJA -- Bug Fix. Did't handle d1-d2/a1 until the following instruction was added */
- if (*str=='/')
- str ++;
- reg1=m68k_reg_parse(&str);
- if((reg1<DATA || reg1>=FPREG+8) && !(reg1==FPI || reg1==FPS || reg1==FPC)) {
- opP->error="unknown register in register list";
- return FAIL;
- }
+ build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
+ rightstop, (const char *) NULL, flab, extent);
+
+ input_line_pointer += 3;
+ if (*input_line_pointer != '.'
+ || input_line_pointer[1] == '\0')
+ qual = '\0';
+ else
+ {
+ qual = input_line_pointer[1];
+ input_line_pointer += 2;
}
- opP->reg=cur_regs;
- return OK;
-} /* get_regs() */
-static int reverse_16_bits(in)
-int in;
-{
- int out=0;
- int n;
-
- static int mask[16] = {
- 0x0001,0x0002,0x0004,0x0008,0x0010,0x0020,0x0040,0x0080,
- 0x0100,0x0200,0x0400,0x0800,0x1000,0x2000,0x4000,0x8000
- };
- for(n=0;n<16;n++) {
- if(in&mask[n])
- out|=mask[15-n];
+ if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
+ &rightstart, &rightstop))
+ {
+ *stop = c;
+ return;
}
- return out;
-} /* reverse_16_bits() */
-static int reverse_8_bits(in)
-int in;
-{
- int out=0;
- int n;
+ build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
+ rightstop, truelab, falselab, extent);
- static int mask[8] = {
- 0x0001,0x0002,0x0004,0x0008,0x0010,0x0020,0x0040,0x0080,
- };
+ if (falselab == NULL)
+ colon (flab);
+ }
+ else if (strncasecmp (input_line_pointer, "OR", 2) == 0)
+ {
+ const char *tlab;
- for(n=0;n<8;n++) {
- if(in&mask[n])
- out|=mask[7-n];
- }
- return out;
-} /* reverse_8_bits() */
+ if (truelab != NULL)
+ tlab = truelab;
+ else
+ tlab = mri_control_label ();
-static void install_operand(mode,val)
-int mode;
-int val;
-{
- switch(mode) {
- case 's':
- the_ins.opcode[0]|=val & 0xFF; /* JF FF is for M kludge */
- break;
- case 'd':
- the_ins.opcode[0]|=val<<9;
- break;
- case '1':
- the_ins.opcode[1]|=val<<12;
- break;
- case '2':
- the_ins.opcode[1]|=val<<6;
- break;
- case '3':
- the_ins.opcode[1]|=val;
- break;
- case '4':
- the_ins.opcode[2]|=val<<12;
- break;
- case '5':
- the_ins.opcode[2]|=val<<6;
- break;
- case '6':
- /* DANGER! This is a hack to force cas2l and cas2w cmds
- to be three words long! */
- the_ins.numo++;
- the_ins.opcode[2]|=val;
- break;
- case '7':
- the_ins.opcode[1]|=val<<7;
- break;
- case '8':
- the_ins.opcode[1]|=val<<10;
- break;
-#ifndef NO_68851
- case '9':
- the_ins.opcode[1]|=val<<5;
- break;
-#endif
+ build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
+ rightstop, tlab, (const char *) NULL, extent);
- case 't':
- the_ins.opcode[1]|=(val<<10)|(val<<7);
- break;
- case 'D':
- the_ins.opcode[1]|=(val<<12)|val;
- break;
- case 'g':
- the_ins.opcode[0]|=val=0xff;
- break;
- case 'i':
- the_ins.opcode[0]|=val<<9;
- break;
- case 'C':
- the_ins.opcode[1]|=val;
- break;
- case 'j':
- the_ins.opcode[1]|=val;
- the_ins.numo++; /* What a hack */
- break;
- case 'k':
- the_ins.opcode[1]|=val<<4;
- break;
- case 'b':
- case 'w':
- case 'l':
- break;
- case 'e':
- the_ins.opcode[0] |= (val << 6);
- break;
- case 'L':
- the_ins.opcode[1] = (val >> 16);
- the_ins.opcode[2] = val & 0xffff;
- break;
- case 'c':
- default:
- as_fatal("failed sanity check.");
+ input_line_pointer += 2;
+ if (*input_line_pointer != '.'
+ || input_line_pointer[1] == '\0')
+ qual = '\0';
+ else
+ {
+ qual = input_line_pointer[1];
+ input_line_pointer += 2;
}
-} /* install_operand() */
-static void install_gen_operand(mode,val)
-int mode;
-int val;
-{
- switch(mode) {
- case 's':
- the_ins.opcode[0]|=val;
- break;
- case 'd':
- /* This is a kludge!!! */
- the_ins.opcode[0]|=(val&0x07)<<9|(val&0x38)<<3;
- break;
- case 'b':
- case 'w':
- case 'l':
- case 'f':
- case 'F':
- case 'x':
- case 'p':
- the_ins.opcode[0]|=val;
- break;
- /* more stuff goes here */
- default:
- as_fatal("failed sanity check.");
+ if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
+ &rightstart, &rightstop))
+ {
+ *stop = c;
+ return;
}
-} /* install_gen_operand() */
-/*
- * verify that we have some number of paren pairs, do m68k_ip_op(), and
- * then deal with the bitfield hack.
- */
+ build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
+ rightstop, truelab, falselab, extent);
-static char *crack_operand(str,opP)
-register char *str;
-register struct m68k_op *opP;
-{
- register int parens;
- register int c;
- register char *beg_str;
-
- if(!str) {
- return str;
- }
- beg_str=str;
- for(parens=0;*str && (parens>0 || notend(str));str++) {
- if(*str=='(') parens++;
- else if(*str==')') {
- if(!parens) { /* ERROR */
- opP->error="Extra )";
- return str;
- }
- --parens;
- }
- }
- if(!*str && parens) { /* ERROR */
- opP->error="Missing )";
- return str;
- }
- c= *str;
- *str='\0';
- if(m68k_ip_op(beg_str,opP)==FAIL) {
- *str=c;
- return str;
- }
- *str=c;
- if(c=='}')
- c= *++str; /* JF bitfield hack */
- if(c) {
- c= *++str;
- if(!c)
- as_bad("Missing operand");
- }
- return str;
-}
+ if (truelab == NULL)
+ colon (tlab);
+ }
+ else
+ {
+ build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
+ rightstop, truelab, falselab, extent);
+ }
-/* See the comment up above where the #define notend(... is */
-#if 0
-notend(s)
-char *s;
-{
- if(*s==',') return 0;
- if(*s=='{' || *s=='}')
- return 0;
- if(*s!=':') return 1;
- /* This kludge here is for the division cmd, which is a kludge */
- if(index("aAdD#",s[1])) return 0;
- return 1;
+ *stop = c;
+ if (input_line_pointer != stop)
+ as_bad ("syntax error in structured control directive");
}
-#endif
-/* This is the guts of the machine-dependent assembler. STR points to a
- machine dependent instruction. This function is supposed to emit
- the frags/bytes it assembles to.
- */
+/* Handle the MRI IF pseudo-op. This may be a structured control
+ directive, or it may be a regular assembler conditional, depending
+ on its operands. */
-void
-insert_reg(regname, regnum)
-char *regname;
-int regnum;
+static void
+s_mri_if (qual)
+ int qual;
{
- char buf[100];
- int i;
- symbol_table_insert(symbol_new(regname, SEG_REGISTER, regnum, &zero_address_frag));
+ char *s;
+ int c;
+ struct mri_control_info *n;
+
+ /* A structured control directive must end with THEN with an
+ optional qualifier. */
+ s = input_line_pointer;
+ while (! is_end_of_line[(unsigned char) *s]
+ && (! flag_mri || *s != '*'))
+ ++s;
+ --s;
+ while (s > input_line_pointer && (*s == ' ' || *s == '\t'))
+ --s;
+
+ if (s - input_line_pointer > 1
+ && s[-1] == '.')
+ s -= 2;
+
+ if (s - input_line_pointer < 3
+ || strncasecmp (s - 3, "THEN", 4) != 0)
+ {
+ if (qual != '\0')
+ {
+ as_bad ("missing then");
+ ignore_rest_of_line ();
+ return;
+ }
- for (i = 0; regname[i]; i++)
- buf[i] = islower (regname[i]) ? toupper (regname[i]) : regname[i];
- buf[i] = '\0';
+ /* It's a conditional. */
+ s_if (O_ne);
+ return;
+ }
- symbol_table_insert(symbol_new(buf, SEG_REGISTER, regnum, &zero_address_frag));
-}
+ /* Since this might be a conditional if, this pseudo-op will be
+ called even if we are supported to be ignoring input. Double
+ check now. Clobber *input_line_pointer so that ignore_input
+ thinks that this is not a special pseudo-op. */
+ c = *input_line_pointer;
+ *input_line_pointer = 0;
+ if (ignore_input ())
+ {
+ *input_line_pointer = c;
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ demand_empty_rest_of_line ();
+ return;
+ }
+ *input_line_pointer = c;
-static const struct {
-char *name;
-int number;
-} init_table[] = {
- "d0", DATA0,
- "d1", DATA1,
- "d2", DATA2,
- "d3", DATA3,
- "d4", DATA4,
- "d5", DATA5,
- "d6", DATA6,
- "d7", DATA7,
- "a0", ADDR0,
- "a1", ADDR1,
- "a2", ADDR2,
- "a3", ADDR3,
- "a4", ADDR4,
- "a5", ADDR5,
- "a6", ADDR6,
- "fp", ADDR6,
- "a7", ADDR7,
- "sp", ADDR7,
- "fp0", FP0,
- "fp1", FP1,
- "fp2", FP2,
- "fp3", FP3,
- "fp4", FP4,
- "fp5", FP5,
- "fp6", FP6,
- "fp7", FP7,
- "fpi", FPI,
- "fpiar", FPI,
- "fpc", FPI,
- "fps", FPS,
- "fpsr", FPS,
- "fpc", FPC,
- "fpcr", FPC,
-
- "cop0", COP0,
- "cop1", COP1,
- "cop2", COP2,
- "cop3", COP3,
- "cop4", COP4,
- "cop5", COP5,
- "cop6", COP6,
- "cop7", COP7,
- "pc", PC,
- "zpc", ZPC,
- "sr", SR,
-
- "ccr", CCR,
- "cc", CCR,
-
- "usp", USP,
- "isp", ISP,
- "sfc", SFC,
- "dfc", DFC,
- "cacr", CACR,
- "caar", CAAR,
-
- "vbr", VBR,
-
- "msp", MSP,
- "itt0", ITT0,
- "itt1", ITT1,
- "dtt0", DTT0,
- "dtt1", DTT1,
- "mmusr", MMUSR,
- "tc", TC,
- "srp", SRP,
- "urp", URP,
-
- "ac", AC,
- "bc", BC,
- "cal", CAL,
- "crp", CRP,
- "drp", DRP,
- "pcsr", PCSR,
- "psr", PSR,
- "scc", SCC,
- "val", VAL,
- "bad0", BAD0,
- "bad1", BAD1,
- "bad2", BAD2,
- "bad3", BAD3,
- "bad4", BAD4,
- "bad5", BAD5,
- "bad6", BAD6,
- "bad7", BAD7,
- "bac0", BAC0,
- "bac1", BAC1,
- "bac2", BAC2,
- "bac3", BAC3,
- "bac4", BAC4,
- "bac5", BAC5,
- "bac6", BAC6,
- "bac7", BAC7,
-
- "ic", IC,
- "dc", DC,
- "nc", NC,
-
- "tt0", TT0,
- "tt1", TT1,
- /* 68ec030 versions of same */
- "ac0", TT0,
- "ac1", TT1,
- /* 68ec030 access control unit, identical to 030 MMU status reg */
- "acusr", PSR,
+ n = push_mri_control (mri_if);
- 0,
+ parse_mri_control_expression (s - 3, qual, (const char *) NULL,
+ n->next, s[1] == '.' ? s[2] : '\0');
-};
+ if (s[1] == '.')
+ input_line_pointer = s + 3;
+ else
+ input_line_pointer = s + 1;
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
-void
-init_regtable()
-{
- int i;
- for (i = 0; init_table[i].name; i++)
- insert_reg(init_table[i].name, init_table[i].number);
+ demand_empty_rest_of_line ();
}
+/* Handle the MRI else pseudo-op. If we are currently doing an MRI
+ structured IF, associate the ELSE with the IF. Otherwise, assume
+ it is a conditional else. */
-void
-md_assemble(str)
- char *str;
+static void
+s_mri_else (qual)
+ int qual;
{
- char *er;
- short *fromP;
- char *toP = NULL;
- int m,n = 0;
- char *to_beg_P;
- int shorts_this_frag;
- static int done_first_time;
-
- if (!done_first_time)
- {
- done_first_time = 1;
+ int c;
+ char *buf;
+ char q[2];
+
+ if (qual == '\0'
+ && (mri_control_stack == NULL
+ || mri_control_stack->type != mri_if
+ || mri_control_stack->else_seen))
+ {
+ s_else (0);
+ return;
+ }
- if (cpu_of_arch (current_architecture) == 0)
- {
- enum m68k_architecture cpu_type;
+ c = *input_line_pointer;
+ *input_line_pointer = 0;
+ if (ignore_input ())
+ {
+ *input_line_pointer = c;
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ demand_empty_rest_of_line ();
+ return;
+ }
+ *input_line_pointer = c;
-#ifndef TARGET_CPU
- cpu_type = m68020;
-#else
- if (strcmp (TARGET_CPU, "m68000") == 0)
- cpu_type = m68000;
- else if (strcmp (TARGET_CPU, "m68010") == 0)
- cpu_type = m68010;
- else if (strcmp (TARGET_CPU, "m68020") == 0
- || strcmp (TARGET_CPU, "m68k") == 0)
- cpu_type = m68020;
- else if (strcmp (TARGET_CPU, "m68030") == 0)
- cpu_type = m68030;
- else if (strcmp (TARGET_CPU, "m68040") == 0)
- cpu_type = m68040;
- else
- cpu_type = m68020;
-#endif
+ if (mri_control_stack == NULL
+ || mri_control_stack->type != mri_if
+ || mri_control_stack->else_seen)
+ {
+ as_bad ("else without matching if");
+ ignore_rest_of_line ();
+ return;
+ }
- /* If float or mmu were specified, just default cpu. */
- if (current_architecture != 0)
- current_architecture |= cpu_type;
- else
- {
- if ((cpu_type & m68020up) != 0)
- current_architecture = (cpu_type
-#ifndef NO_68881
- | m68881
-#endif
-#ifndef NO_68851
- | m68851
-#endif
- );
- else
- current_architecture = cpu_type;
- }
- }
- if (cpu_of_arch (current_architecture) == m68000
- && (current_architecture & m68881) != 0)
- {
- as_bad ("incompatible processors 68000 and 68881 specified");
- }
- done_first_time = 1;
- }
+ mri_control_stack->else_seen = 1;
- memset((char *)(&the_ins), '\0', sizeof(the_ins)); /* JF for paranoia sake */
- m68k_ip(str);
- er=the_ins.error;
- if(!er) {
- for(n=the_ins.numargs;n;--n)
- if(the_ins.operands[n].error) {
- er=the_ins.operands[n].error;
- break;
- }
- }
- if(er) {
- as_bad("%s -- statement `%s' ignored",er,str);
- return;
- }
+ buf = (char *) xmalloc (20 + strlen (mri_control_stack->bottom));
+ q[0] = qual;
+ q[1] = '\0';
+ sprintf (buf, "bra%s %s", q, mri_control_stack->bottom);
+ md_assemble (buf);
+ free (buf);
- if(the_ins.nfrag==0) { /* No frag hacking involved; just put it out */
- toP=frag_more(2*the_ins.numo);
- fromP= &the_ins.opcode[0];
- for(m=the_ins.numo;m;--m) {
- md_number_to_chars(toP,(long)(*fromP),2);
- toP+=2;
- fromP++;
- }
- /* put out symbol-dependent info */
- for(m=0;m<the_ins.nrel;m++) {
- switch(the_ins.reloc[m].wid) {
- case 'B':
- n=1;
- break;
- case 'b':
- n=1;
- break;
- case '3':
- n=2;
- break;
- case 'w':
- n=2;
- break;
- case 'l':
- n=4;
- break;
- default:
- as_fatal("Don't know how to figure width of %c in md_assemble()",the_ins.reloc[m].wid);
- }
+ colon (mri_control_stack->next);
- fix_new(frag_now,
- (toP-frag_now->fr_literal)-the_ins.numo*2+the_ins.reloc[m].n,
- n,
- the_ins.reloc[m].add,
- the_ins.reloc[m].sub,
- the_ins.reloc[m].off,
- the_ins.reloc[m].pcrel,
- NO_RELOC);
- }
- return;
- }
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
- /* There's some frag hacking */
- for(n=0,fromP= &the_ins.opcode[0];n<the_ins.nfrag;n++) {
- int wid;
-
- if(n==0) wid=2*the_ins.fragb[n].fragoff;
- else wid=2*(the_ins.numo-the_ins.fragb[n-1].fragoff);
- toP=frag_more(wid);
- to_beg_P=toP;
- shorts_this_frag=0;
- for(m=wid/2;m;--m) {
- md_number_to_chars(toP,(long)(*fromP),2);
- toP+=2;
- fromP++;
- shorts_this_frag++;
- }
- for(m=0;m<the_ins.nrel;m++) {
- if((the_ins.reloc[m].n)>= 2*shorts_this_frag /* 2*the_ins.fragb[n].fragoff */) {
- the_ins.reloc[m].n-= 2*shorts_this_frag /* 2*the_ins.fragb[n].fragoff */;
- break;
- }
- wid=the_ins.reloc[m].wid;
- if(wid==0)
- continue;
- the_ins.reloc[m].wid=0;
- wid = (wid=='b') ? 1 : (wid=='w') ? 2 : (wid=='l') ? 4 : 4000;
-
- fix_new(frag_now,
- (toP-frag_now->fr_literal)-the_ins.numo*2+the_ins.reloc[m].n,
- wid,
- the_ins.reloc[m].add,
- the_ins.reloc[m].sub,
- the_ins.reloc[m].off,
- the_ins.reloc[m].pcrel,
- NO_RELOC);
- }
- /* know(the_ins.fragb[n].fadd); */
- (void)frag_var(rs_machine_dependent,10,0,(relax_substateT)(the_ins.fragb[n].fragty),
- the_ins.fragb[n].fadd,the_ins.fragb[n].foff,to_beg_P);
- }
- n=(the_ins.numo-the_ins.fragb[n-1].fragoff);
- shorts_this_frag=0;
- if(n) {
- toP=frag_more(n*sizeof(short));
- while(n--) {
- md_number_to_chars(toP,(long)(*fromP),2);
- toP+=2;
- fromP++;
- shorts_this_frag++;
- }
- }
- for(m=0;m<the_ins.nrel;m++) {
- int wid;
-
- wid=the_ins.reloc[m].wid;
- if(wid==0)
- continue;
- the_ins.reloc[m].wid=0;
- wid = (wid=='b') ? 1 : (wid=='w') ? 2 : (wid=='l') ? 4 : 4000;
-
- fix_new(frag_now,
- (the_ins.reloc[m].n + toP-frag_now->fr_literal)-/* the_ins.numo */ shorts_this_frag*2,
- wid,
- the_ins.reloc[m].add,
- the_ins.reloc[m].sub,
- the_ins.reloc[m].off,
- the_ins.reloc[m].pcrel,
- NO_RELOC);
- }
+ demand_empty_rest_of_line ();
}
+/* Handle the MRI ENDI pseudo-op. */
-
-void
- md_begin()
+static void
+s_mri_endi (ignore)
+ int ignore;
{
- /*
- * md_begin -- set up hash tables with 68000 instructions.
- * similar to what the vax assembler does. ---phr
- */
- /* RMS claims the thing to do is take the m68k-opcode.h table, and make
- a copy of it at runtime, adding in the information we want but isn't
- there. I think it'd be better to have an awk script hack the table
- at compile time. Or even just xstr the table and use it as-is. But
- my lord ghod hath spoken, so we do it this way. Excuse the ugly var
- names. */
-
- register const struct m68k_opcode *ins;
- register struct m68k_incant *hack,
- *slak;
- register char *retval = 0; /* empty string, or error msg text */
- register unsigned int i;
- register char c;
-
- if ((op_hash = hash_new()) == NULL)
- as_fatal("Virtual memory exhausted");
-
- obstack_begin(&robyn,4000);
- for (ins = m68k_opcodes; ins < endop; ins++) {
- hack=slak=(struct m68k_incant *)obstack_alloc(&robyn,sizeof(struct m68k_incant));
- do {
- /* we *could* ignore insns that don't match our
- arch here but just leaving them out of the
- hash. */
- slak->m_operands=ins->args;
- slak->m_opnum=strlen(slak->m_operands)/2;
- slak->m_arch = ins->arch;
- slak->m_opcode=ins->opcode;
- /* This is kludgey */
- slak->m_codenum=((ins->match)&0xffffL) ? 2 : 1;
- if((ins+1)!=endop && !strcmp(ins->name,(ins+1)->name)) {
- slak->m_next=(struct m68k_incant *) obstack_alloc(&robyn,sizeof(struct m68k_incant));
- ins++;
- } else
- slak->m_next=0;
- slak=slak->m_next;
- } while(slak);
-
- retval = hash_insert (op_hash, ins->name,(char *)hack);
- /* Didn't his mommy tell him about null pointers? */
- if(retval && *retval)
- as_bad("Internal Error: Can't hash %s: %s",ins->name,retval);
- }
+ if (mri_control_stack == NULL
+ || mri_control_stack->type != mri_if)
+ {
+ as_bad ("endi without matching if");
+ ignore_rest_of_line ();
+ return;
+ }
- for (i = 0; i < sizeof(mklower_table) ; i++)
- mklower_table[i] = (isupper(c = (char) i)) ? tolower(c) : c;
+ /* ignore_input will not return true for ENDI, so we don't need to
+ worry about checking it again here. */
- for (i = 0 ; i < sizeof(notend_table) ; i++) {
- notend_table[i] = 0;
- alt_notend_table[i] = 0;
- }
- notend_table[','] = 1;
- notend_table['{'] = 1;
- notend_table['}'] = 1;
- alt_notend_table['a'] = 1;
- alt_notend_table['A'] = 1;
- alt_notend_table['d'] = 1;
- alt_notend_table['D'] = 1;
- alt_notend_table['#'] = 1;
- alt_notend_table['f'] = 1;
- alt_notend_table['F'] = 1;
-#ifdef REGISTER_PREFIX
- alt_notend_table[REGISTER_PREFIX] = 1;
-#endif
+ if (! mri_control_stack->else_seen)
+ colon (mri_control_stack->next);
+ colon (mri_control_stack->bottom);
-#ifndef MIT_SYNTAX_ONLY
- /* Insert pseudo ops, these have to go into the opcode table since
- gas expects pseudo ops to start with a dot */
- {
- int n = 0;
- while (mote_pseudo_table[n].poc_name)
- {
- hack=(struct m68k_incant *)
- obstack_alloc(&robyn,sizeof(struct m68k_incant));
- hash_insert(op_hash,
- mote_pseudo_table[n].poc_name, (char *)hack);
- hack->m_operands = 0;
- hack->m_opnum = n;
- n++;
- }
- }
-#endif
+ pop_mri_control ();
+
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
- init_regtable();
+ demand_empty_rest_of_line ();
}
-#if 0
-#define notend(s) ((*s == ',' || *s == '}' || *s == '{' \
- || (*s == ':' && strchr("aAdD#", s[1]))) \
- ? 0 : 1)
-#endif
+/* Handle the MRI BREAK pseudo-op. */
-/* This funciton is called once, before the assembler exits. It is
- supposed to do any final cleanup for this part of the assembler.
- */
-void
- md_end()
+static void
+s_mri_break (extent)
+ int extent;
{
-}
+ struct mri_control_info *n;
+ char *buf;
+ char ex[2];
+
+ n = mri_control_stack;
+ while (n != NULL
+ && n->type != mri_for
+ && n->type != mri_repeat
+ && n->type != mri_while)
+ n = n->outer;
+ if (n == NULL)
+ {
+ as_bad ("break outside of structured loop");
+ ignore_rest_of_line ();
+ return;
+ }
-/* Equal to MAX_PRECISION in atof-ieee.c */
-#define MAX_LITTLENUMS 6
+ buf = (char *) xmalloc (20 + strlen (n->bottom));
+ ex[0] = extent;
+ ex[1] = '\0';
+ sprintf (buf, "bra%s %s", ex, n->bottom);
+ md_assemble (buf);
+ free (buf);
-/* Turn a string in input_line_pointer into a floating point constant of type
- type, and store the appropriate bytes in *litP. The number of LITTLENUMS
- emitted is stored in *sizeP . An error message is returned, or NULL on OK.
- */
-char *
- md_atof(type,litP,sizeP)
-char type;
-char *litP;
-int *sizeP;
-{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
- char *atof_ieee();
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
- switch(type) {
- case 'f':
- case 'F':
- case 's':
- case 'S':
- prec = 2;
- break;
+ demand_empty_rest_of_line ();
+}
- case 'd':
- case 'D':
- case 'r':
- case 'R':
- prec = 4;
- break;
+/* Handle the MRI NEXT pseudo-op. */
- case 'x':
- case 'X':
- prec = 6;
- break;
+static void
+s_mri_next (extent)
+ int extent;
+{
+ struct mri_control_info *n;
+ char *buf;
+ char ex[2];
+
+ n = mri_control_stack;
+ while (n != NULL
+ && n->type != mri_for
+ && n->type != mri_repeat
+ && n->type != mri_while)
+ n = n->outer;
+ if (n == NULL)
+ {
+ as_bad ("next outside of structured loop");
+ ignore_rest_of_line ();
+ return;
+ }
- case 'p':
- case 'P':
- prec = 6;
- break;
+ buf = (char *) xmalloc (20 + strlen (n->next));
+ ex[0] = extent;
+ ex[1] = '\0';
+ sprintf (buf, "bra%s %s", ex, n->next);
+ md_assemble (buf);
+ free (buf);
- default:
- *sizeP=0;
- return "Bad call to MD_ATOF()";
- }
- t=atof_ieee(input_line_pointer,type,words);
- if(t)
- input_line_pointer=t;
-
- *sizeP=prec * sizeof(LITTLENUM_TYPE);
- for(wordP=words;prec--;) {
- md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE));
- litP+=sizeof(LITTLENUM_TYPE);
- }
- return ""; /* Someone should teach Dean about null pointers */
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
+
+ demand_empty_rest_of_line ();
}
-/* Turn an integer of n bytes (in val) into a stream of bytes appropriate
- for use in the a.out file, and stores them in the array pointed to by buf.
- This knows about the endian-ness of the target machine and does
- THE RIGHT THING, whatever it is. Possible values for n are 1 (byte)
- 2 (short) and 4 (long) Floating numbers are put out as a series of
- LITTLENUMS (shorts, here at least)
- */
-void
- md_number_to_chars(buf,val,n)
-char *buf;
-long val;
-int n;
+/* Handle the MRI FOR pseudo-op. */
+
+static void
+s_mri_for (qual)
+ int qual;
{
- switch(n) {
- case 1:
- *buf++=val;
- break;
- case 2:
- *buf++=(val>>8);
- *buf++=val;
- break;
- case 4:
- *buf++=(val>>24);
- *buf++=(val>>16);
- *buf++=(val>>8);
- *buf++=val;
- break;
- default:
- as_fatal("failed sanity check.");
+ const char *varstart, *varstop;
+ const char *initstart, *initstop;
+ const char *endstart, *endstop;
+ const char *bystart, *bystop;
+ int up;
+ int by;
+ int extent;
+ struct mri_control_info *n;
+ char *buf;
+ char *s;
+ char ex[2];
+
+ /* The syntax is
+ FOR.q var = init { TO | DOWNTO } end [ BY by ] DO.e
+ */
+
+ SKIP_WHITESPACE ();
+ varstart = input_line_pointer;
+
+ /* Look for the '='. */
+ while (! is_end_of_line[(unsigned char) *input_line_pointer]
+ && *input_line_pointer != '=')
+ ++input_line_pointer;
+ if (*input_line_pointer != '=')
+ {
+ as_bad ("missing =");
+ ignore_rest_of_line ();
+ return;
+ }
+
+ varstop = input_line_pointer;
+ if (varstop > varstart
+ && (varstop[-1] == ' ' || varstop[-1] == '\t'))
+ --varstop;
+
+ ++input_line_pointer;
+
+ initstart = input_line_pointer;
+
+ /* Look for TO or DOWNTO. */
+ up = 1;
+ initstop = NULL;
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (strncasecmp (input_line_pointer, "TO", 2) == 0
+ && ! is_part_of_name (input_line_pointer[2]))
+ {
+ initstop = input_line_pointer;
+ input_line_pointer += 2;
+ break;
}
-}
+ if (strncasecmp (input_line_pointer, "DOWNTO", 6) == 0
+ && ! is_part_of_name (input_line_pointer[6]))
+ {
+ initstop = input_line_pointer;
+ up = 0;
+ input_line_pointer += 6;
+ break;
+ }
+ ++input_line_pointer;
+ }
+ if (initstop == NULL)
+ {
+ as_bad ("missing to or downto");
+ ignore_rest_of_line ();
+ return;
+ }
+ if (initstop > initstart
+ && (initstop[-1] == ' ' || initstop[-1] == '\t'))
+ --initstop;
-void
- md_apply_fix(fixP, val)
-fixS *fixP;
-long val;
-{
- char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
+ SKIP_WHITESPACE ();
+ endstart = input_line_pointer;
- switch(fixP->fx_size) {
- case 1:
- *buf++=val;
- break;
- case 2:
- *buf++=(val>>8);
- *buf++=val;
- break;
- case 4:
- *buf++=(val>>24);
- *buf++=(val>>16);
- *buf++=(val>>8);
- *buf++=val;
- break;
- default:
- BAD_CASE (fixP->fx_size);
+ /* Look for BY or DO. */
+ by = 0;
+ endstop = NULL;
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (strncasecmp (input_line_pointer, "BY", 2) == 0
+ && ! is_part_of_name (input_line_pointer[2]))
+ {
+ endstop = input_line_pointer;
+ by = 1;
+ input_line_pointer += 2;
+ break;
}
-}
+ if (strncasecmp (input_line_pointer, "DO", 2) == 0
+ && (input_line_pointer[2] == '.'
+ || ! is_part_of_name (input_line_pointer[2])))
+ {
+ endstop = input_line_pointer;
+ input_line_pointer += 2;
+ break;
+ }
+ ++input_line_pointer;
+ }
+ if (endstop == NULL)
+ {
+ as_bad ("missing do");
+ ignore_rest_of_line ();
+ return;
+ }
+ if (endstop > endstart
+ && (endstop[-1] == ' ' || endstop[-1] == '\t'))
+ --endstop;
+ if (! by)
+ {
+ bystart = "#1";
+ bystop = bystart + 2;
+ }
+ else
+ {
+ SKIP_WHITESPACE ();
+ bystart = input_line_pointer;
-/* *fragP has been relaxed to its final size, and now needs to have
- the bytes inside it modified to conform to the new size There is UGLY
- MAGIC here. ..
- */
-void
- md_convert_frag(headers, fragP)
-object_headers *headers;
-register fragS *fragP;
-{
- long disp;
- long ext = 0;
-
- /* Address in object code of the displacement. */
- register int object_address = fragP -> fr_fix + fragP -> fr_address;
-
-#ifdef IBM_COMPILER_SUX
- /* This is wrong but it convinces the native rs6000 compiler to
- generate the code we want. */
- register char *buffer_address = fragP -> fr_literal;
- buffer_address += fragP -> fr_fix;
-#else /* IBM_COMPILER_SUX */
- /* Address in gas core of the place to store the displacement. */
- register char *buffer_address = fragP->fr_fix + fragP->fr_literal;
-#endif /* IBM_COMPILER_SUX */
-
- /* No longer true: know(fragP->fr_symbol); */
-
- /* The displacement of the address, from current location. */
- disp = fragP->fr_symbol ? S_GET_VALUE(fragP->fr_symbol) : 0;
- disp = (disp + fragP->fr_offset) - object_address;
-
- switch(fragP->fr_subtype) {
- case TAB(BCC68000,BYTE):
- case TAB(ABRANCH,BYTE):
- know(issbyte(disp));
- if(disp==0)
- as_bad("short branch with zero offset: use :w");
- fragP->fr_opcode[1]=disp;
- ext=0;
- break;
- case TAB(DBCC,SHORT):
- know(issword(disp));
- ext=2;
- break;
- case TAB(BCC68000,SHORT):
- case TAB(ABRANCH,SHORT):
- know(issword(disp));
- fragP->fr_opcode[1]=0x00;
- ext=2;
- break;
- case TAB(ABRANCH,LONG):
- if (cpu_of_arch(current_architecture) < m68020) {
- if (fragP->fr_opcode[0]==0x61) {
- fragP->fr_opcode[0]= 0x4E;
- fragP->fr_opcode[1]= 0xB9; /* JBSR with ABSL LONG offset */
- subseg_change(SEG_TEXT, 0);
-
- fix_new(fragP,
- fragP->fr_fix,
- 4,
- fragP->fr_symbol,
- 0,
- fragP->fr_offset,
- 0,
- NO_RELOC);
-
- fragP->fr_fix+=4;
- ext=0;
- } else if (fragP->fr_opcode[0]==0x60) {
- fragP->fr_opcode[0]= 0x4E;
- fragP->fr_opcode[1]= 0xF9; /* JMP with ABSL LONG offset */
- subseg_change(SEG_TEXT, 0);
- fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, fragP->fr_offset,0,
- NO_RELOC);
- fragP->fr_fix+=4;
- ext=0;
- } else {
- as_bad("Long branch offset not supported.");
- }
- } else {
- fragP->fr_opcode[1]=0xff;
- ext=4;
- }
- break;
- case TAB(BCC68000,LONG):
- /* only Bcc 68000 instructions can come here */
- /* change bcc into b!cc/jmp absl long */
- fragP->fr_opcode[0] ^= 0x01; /* invert bcc */
- fragP->fr_opcode[1] = 0x6; /* branch offset = 6 */
+ /* Look for DO. */
+ bystop = NULL;
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (strncasecmp (input_line_pointer, "DO", 2) == 0
+ && (input_line_pointer[2] == '.'
+ || ! is_part_of_name (input_line_pointer[2])))
+ {
+ bystop = input_line_pointer;
+ input_line_pointer += 2;
+ break;
+ }
+ ++input_line_pointer;
+ }
+ if (bystop == NULL)
+ {
+ as_bad ("missing do");
+ ignore_rest_of_line ();
+ return;
+ }
+ if (bystop > bystart
+ && (bystop[-1] == ' ' || bystop[-1] == '\t'))
+ --bystop;
+ }
- /* JF: these used to be fr_opcode[2,3], but they may be in a
- different frag, in which case refering to them is a no-no.
- Only fr_opcode[0,1] are guaranteed to work. */
- *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
- *buffer_address++ = 0xf9;
- fragP->fr_fix += 2; /* account for jmp instruction */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0,
- fragP->fr_offset,0,
- NO_RELOC);
- fragP->fr_fix += 4;
- ext=0;
- break;
- case TAB(DBCC,LONG):
- /* only DBcc 68000 instructions can come here */
- /* change dbcc into dbcc/jmp absl long */
- /* JF: these used to be fr_opcode[2-7], but that's wrong */
- *buffer_address++ = 0x00; /* branch offset = 4 */
- *buffer_address++ = 0x04;
- *buffer_address++ = 0x60; /* put in bra pc+6 */
- *buffer_address++ = 0x06;
- *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
- *buffer_address++ = 0xf9;
-
- fragP->fr_fix += 6; /* account for bra/jmp instructions */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0,
- fragP->fr_offset,0,
- NO_RELOC);
- fragP->fr_fix += 4;
- ext=0;
- break;
- case TAB(FBRANCH,SHORT):
- know((fragP->fr_opcode[1]&0x40)==0);
- ext=2;
- break;
- case TAB(FBRANCH,LONG):
- fragP->fr_opcode[1]|=0x40; /* Turn on LONG bit */
- ext=4;
- break;
- case TAB(PCREL,SHORT):
- ext=2;
- break;
- case TAB(PCREL,LONG):
- /* The thing to do here is force it to ABSOLUTE LONG, since
- PCREL is really trying to shorten an ABSOLUTE address anyway */
- /* JF FOO This code has not been tested */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0, fragP->fr_offset, 0, NO_RELOC);
- if((fragP->fr_opcode[1] & 0x3F) != 0x3A)
- as_bad("Internal error (long PC-relative operand) for insn 0x%04lx at 0x%lx",
- fragP->fr_opcode[0],fragP->fr_address);
- fragP->fr_opcode[1]&= ~0x3F;
- fragP->fr_opcode[1]|=0x39; /* Mode 7.1 */
- fragP->fr_fix+=4;
- /* md_number_to_chars(buffer_address,
- (long)(fragP->fr_symbol->sy_value + fragP->fr_offset),
- 4); */
- ext=0;
- break;
- case TAB(PCLEA,SHORT):
- subseg_change(SEG_TEXT,0);
- fix_new(fragP,(int)(fragP->fr_fix),2,fragP->fr_symbol,(symbolS *)0,fragP->fr_offset,1,
- NO_RELOC);
- fragP->fr_opcode[1] &= ~0x3F;
- fragP->fr_opcode[1] |= 0x3A;
- ext=2;
- break;
- case TAB(PCLEA,LONG):
- subseg_change(SEG_TEXT,0);
- fix_new(fragP,(int)(fragP->fr_fix)+2,4,fragP->fr_symbol,(symbolS *)0,fragP->fr_offset+2,1,
- NO_RELOC);
- *buffer_address++ = 0x01;
- *buffer_address++ = 0x70;
- fragP->fr_fix+=2;
- /* buffer_address+=2; */
- ext=4;
- break;
+ if (*input_line_pointer != '.')
+ extent = '\0';
+ else
+ {
+ extent = input_line_pointer[1];
+ input_line_pointer += 2;
+ }
-} /* switch on subtype */
+ /* We have fully parsed the FOR operands. Now build the loop. */
+
+ n = push_mri_control (mri_for);
+
+ buf = (char *) xmalloc (50 + (input_line_pointer - varstart));
+
+ /* move init,var */
+ s = buf;
+ *s++ = 'm';
+ *s++ = 'o';
+ *s++ = 'v';
+ *s++ = 'e';
+ if (qual != '\0')
+ *s++ = qual;
+ *s++ = ' ';
+ memcpy (s, initstart, initstop - initstart);
+ s += initstop - initstart;
+ *s++ = ',';
+ memcpy (s, varstart, varstop - varstart);
+ s += varstop - varstart;
+ *s = '\0';
+ md_assemble (buf);
+
+ colon (n->top);
+
+ /* cmp end,var */
+ s = buf;
+ *s++ = 'c';
+ *s++ = 'm';
+ *s++ = 'p';
+ if (qual != '\0')
+ *s++ = qual;
+ *s++ = ' ';
+ memcpy (s, endstart, endstop - endstart);
+ s += endstop - endstart;
+ *s++ = ',';
+ memcpy (s, varstart, varstop - varstart);
+ s += varstop - varstart;
+ *s = '\0';
+ md_assemble (buf);
+
+ /* bcc bottom */
+ ex[0] = extent;
+ ex[1] = '\0';
+ if (up)
+ sprintf (buf, "blt%s %s", ex, n->bottom);
+ else
+ sprintf (buf, "bgt%s %s", ex, n->bottom);
+ md_assemble (buf);
+
+ /* Put together the add or sub instruction used by ENDF. */
+ s = buf;
+ if (up)
+ strcpy (s, "add");
+ else
+ strcpy (s, "sub");
+ s += 3;
+ if (qual != '\0')
+ *s++ = qual;
+ *s++ = ' ';
+ memcpy (s, bystart, bystop - bystart);
+ s += bystop - bystart;
+ *s++ = ',';
+ memcpy (s, varstart, varstop - varstart);
+ s += varstop - varstart;
+ *s = '\0';
+ n->incr = buf;
+
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
- if (ext) {
- md_number_to_chars(buffer_address, (long) disp, (int) ext);
- fragP->fr_fix += ext;
- /* H_SET_TEXT_SIZE(headers, H_GET_TEXT_SIZE(headers) + ext); */
- } /* if extending */
+ demand_empty_rest_of_line ();
+}
- return;
-} /* md_convert_frag() */
+/* Handle the MRI ENDF pseudo-op. */
-/* Force truly undefined symbols to their maximum size, and generally set up
- the frag list to be relaxed
- */
-int md_estimate_size_before_relax(fragP, segment)
-register fragS *fragP;
-segT segment;
+static void
+s_mri_endf (ignore)
+ int ignore;
{
- int old_fix;
- register char *buffer_address = fragP->fr_fix + fragP->fr_literal;
-
- old_fix = fragP->fr_fix;
-
- /* handle SZ_UNDEF first, it can be changed to BYTE or SHORT */
- switch (fragP->fr_subtype) {
-
- case TAB(ABRANCH,SZ_UNDEF): {
- if((fragP->fr_symbol != NULL) /* Not absolute */
- && S_GET_SEGMENT(fragP->fr_symbol) == segment) {
- fragP->fr_subtype=TAB(TABTYPE(fragP->fr_subtype),BYTE);
- break;
- } else if((fragP->fr_symbol == 0) || (cpu_of_arch(current_architecture) < m68020)) {
- /* On 68000, or for absolute value, switch to abs long */
- /* FIXME, we should check abs val, pick short or long */
- if(fragP->fr_opcode[0]==0x61) {
- fragP->fr_opcode[0]= 0x4E;
- fragP->fr_opcode[1]= 0xB9; /* JBSR with ABSL LONG offset */
- subseg_change(SEG_TEXT, 0);
- fix_new(fragP, fragP->fr_fix, 4,
- fragP->fr_symbol, 0, fragP->fr_offset, 0, NO_RELOC);
- fragP->fr_fix+=4;
- frag_wane(fragP);
- } else if(fragP->fr_opcode[0]==0x60) {
- fragP->fr_opcode[0]= 0x4E;
- fragP->fr_opcode[1]= 0xF9; /* JMP with ABSL LONG offset */
- subseg_change(SEG_TEXT, 0);
- fix_new(fragP, fragP->fr_fix, 4,
- fragP->fr_symbol, 0, fragP->fr_offset, 0, NO_RELOC);
- fragP->fr_fix+=4;
- frag_wane(fragP);
- } else {
- as_warn("Long branch offset to extern symbol not supported.");
- }
- } else { /* Symbol is still undefined. Make it simple */
- fix_new(fragP, (int)(fragP->fr_fix), 4, fragP->fr_symbol,
- (symbolS *)0, fragP->fr_offset+4, 1, NO_RELOC);
- fragP->fr_fix+=4;
- fragP->fr_opcode[1]=0xff;
- frag_wane(fragP);
- break;
- }
+ if (mri_control_stack == NULL
+ || mri_control_stack->type != mri_for)
+ {
+ as_bad ("endf without for");
+ ignore_rest_of_line ();
+ return;
+ }
- break;
- } /* case TAB(ABRANCH,SZ_UNDEF) */
-
- case TAB(FBRANCH,SZ_UNDEF): {
- if(S_GET_SEGMENT(fragP->fr_symbol) == segment || flagseen['l']) {
- fragP->fr_subtype = TAB(FBRANCH,SHORT);
- fragP->fr_var += 2;
- } else {
- fragP->fr_subtype = TAB(FBRANCH,LONG);
- fragP->fr_var += 4;
- }
- break;
- } /* TAB(FBRANCH,SZ_UNDEF) */
-
- case TAB(PCREL,SZ_UNDEF): {
- if(S_GET_SEGMENT(fragP->fr_symbol) == segment || flagseen['l']) {
- fragP->fr_subtype = TAB(PCREL,SHORT);
- fragP->fr_var += 2;
- } else {
- fragP->fr_subtype = TAB(PCREL,LONG);
- fragP->fr_var += 4;
- }
- break;
- } /* TAB(PCREL,SZ_UNDEF) */
+ colon (mri_control_stack->next);
- case TAB(BCC68000,SZ_UNDEF): {
- if((fragP->fr_symbol != NULL)
- && S_GET_SEGMENT(fragP->fr_symbol) == segment) {
- fragP->fr_subtype=TAB(BCC68000,BYTE);
- break;
- }
- /* only Bcc 68000 instructions can come here */
- /* change bcc into b!cc/jmp absl long */
- fragP->fr_opcode[0] ^= 0x01; /* invert bcc */
- if(flagseen['l']) {
- fragP->fr_opcode[1] = 0x04; /* branch offset = 6 */
- /* JF: these were fr_opcode[2,3] */
- buffer_address[0] = 0x4e; /* put in jmp long (0x4ef9) */
- buffer_address[1] = 0xf8;
- fragP->fr_fix += 2; /* account for jmp instruction */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 2, fragP->fr_symbol, 0,
- fragP->fr_offset, 0, NO_RELOC);
- fragP->fr_fix += 2;
- } else {
- fragP->fr_opcode[1] = 0x06; /* branch offset = 6 */
- /* JF: these were fr_opcode[2,3] */
- buffer_address[0] = 0x4e; /* put in jmp long (0x4ef9) */
- buffer_address[1] = 0xf9;
- fragP->fr_fix += 2; /* account for jmp instruction */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0,
- fragP->fr_offset, 0, NO_RELOC);
- fragP->fr_fix += 4;
- }
- frag_wane(fragP);
- break;
- } /* case TAB(BCC68000,SZ_UNDEF) */
+ md_assemble (mri_control_stack->incr);
- case TAB(DBCC,SZ_UNDEF): {
- if (fragP->fr_symbol != NULL && S_GET_SEGMENT(fragP->fr_symbol) == segment) {
- fragP->fr_subtype=TAB(DBCC,SHORT);
- fragP->fr_var+=2;
- break;
- }
- /* only DBcc 68000 instructions can come here */
- /* change dbcc into dbcc/jmp absl long */
- /* JF: these used to be fr_opcode[2-4], which is wrong. */
- buffer_address[0] = 0x00; /* branch offset = 4 */
- buffer_address[1] = 0x04;
- buffer_address[2] = 0x60; /* put in bra pc + ... */
-
- if(flagseen['l']) {
- /* JF: these were fr_opcode[5-7] */
- buffer_address[3] = 0x04; /* plus 4 */
- buffer_address[4] = 0x4e;/* Put in Jump Word */
- buffer_address[5] = 0xf8;
- fragP->fr_fix += 6; /* account for bra/jmp instruction */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 2, fragP->fr_symbol, 0,
-
-
- fragP->fr_offset, 0, NO_RELOC);
- fragP->fr_fix += 2;
- } else {
- /* JF: these were fr_opcode[5-7] */
- buffer_address[3] = 0x06; /* Plus 6 */
- buffer_address[4] = 0x4e; /* put in jmp long (0x4ef9) */
- buffer_address[5] = 0xf9;
- fragP->fr_fix += 6; /* account for bra/jmp instruction */
- subseg_change(SEG_TEXT,0);
- fix_new(fragP, fragP->fr_fix, 4, fragP->fr_symbol, 0,
- fragP->fr_offset, 0, NO_RELOC);
- fragP->fr_fix += 4;
- }
+ sprintf (mri_control_stack->incr, "bra %s", mri_control_stack->top);
+ md_assemble (mri_control_stack->incr);
- frag_wane(fragP);
- break;
- } /* case TAB(DBCC,SZ_UNDEF) */
-
- case TAB(PCLEA,SZ_UNDEF): {
- if ((S_GET_SEGMENT(fragP->fr_symbol))==segment || flagseen['l']) {
- fragP->fr_subtype=TAB(PCLEA,SHORT);
- fragP->fr_var+=2;
- } else {
- fragP->fr_subtype=TAB(PCLEA,LONG);
- fragP->fr_var+=6;
- }
- break;
- } /* TAB(PCLEA,SZ_UNDEF) */
+ free (mri_control_stack->incr);
- default:
- break;
+ colon (mri_control_stack->bottom);
- } /* switch on subtype looking for SZ_UNDEF's. */
-
- /* now that SZ_UNDEF are taken care of, check others */
- switch (fragP->fr_subtype) {
- case TAB(BCC68000,BYTE):
- case TAB(ABRANCH,BYTE):
- /* We can't do a short jump to the next instruction,
- so we force word mode. */
- if (fragP->fr_symbol && S_GET_VALUE(fragP->fr_symbol)==0 &&
- fragP->fr_symbol->sy_frag==fragP->fr_next) {
- fragP->fr_subtype=TAB(TABTYPE(fragP->fr_subtype),SHORT);
- fragP->fr_var+=2;
- }
- break;
- default:
- break;
-}
- return fragP->fr_var + fragP->fr_fix - old_fix;
-}
+ pop_mri_control ();
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
-/* the bit-field entries in the relocation_info struct plays hell
- with the byte-order problems of cross-assembly. So as a hack,
- I added this mach. dependent ri twiddler. Ugly, but it gets
- you there. -KWK */
-/* on m68k: first 4 bytes are normal unsigned long, next three bytes
- are symbolnum, most sig. byte first. Last byte is broken up with
- bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower
- nibble as nuthin. (on Sun 3 at least) */
-/* Translate the internal relocation information into target-specific
- format. */
-#ifdef comment
-void
- md_ri_to_chars(the_bytes, ri)
-char *the_bytes;
-struct reloc_info_generic *ri;
-{
- /* this is easy */
- md_number_to_chars(the_bytes, ri->r_address, 4);
- /* now the fun stuff */
- the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff;
- the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff;
- the_bytes[6] = ri->r_symbolnum & 0x0ff;
- the_bytes[7] = (((ri->r_pcrel << 7) & 0x80) | ((ri->r_length << 5) & 0x60) |
- ((ri->r_extern << 4) & 0x10));
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
+
+ demand_empty_rest_of_line ();
}
-#endif /* comment */
-void tc_aout_fix_to_chars(where, fixP, segment_address_in_file)
-char *where;
-fixS *fixP;
-relax_addressT segment_address_in_file;
+/* Handle the MRI REPEAT pseudo-op. */
+
+static void
+s_mri_repeat (ignore)
+ int ignore;
{
- /*
- * In: length of relocation (or of address) in chars: 1, 2 or 4.
- * Out: GNU LD relocation length code: 0, 1, or 2.
- */
+ struct mri_control_info *n;
- static unsigned char nbytes_r_length [] = { 42, 0, 1, 42, 2 };
- long r_symbolnum;
+ n = push_mri_control (mri_repeat);
+ colon (n->top);
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
+ demand_empty_rest_of_line ();
+}
- know(fixP->fx_addsy != NULL);
+/* Handle the MRI UNTIL pseudo-op. */
- md_number_to_chars(where,
- fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
- 4);
+static void
+s_mri_until (qual)
+ int qual;
+{
+ char *s;
- r_symbolnum = (S_IS_DEFINED(fixP->fx_addsy)
- ? S_GET_TYPE(fixP->fx_addsy)
- : fixP->fx_addsy->sy_number);
+ if (mri_control_stack == NULL
+ || mri_control_stack->type != mri_repeat)
+ {
+ as_bad ("until without repeat");
+ ignore_rest_of_line ();
+ return;
+ }
- where[4] = (r_symbolnum >> 16) & 0x0ff;
- where[5] = (r_symbolnum >> 8) & 0x0ff;
- where[6] = r_symbolnum & 0x0ff;
- where[7] = (((fixP->fx_pcrel << 7) & 0x80) | ((nbytes_r_length[fixP->fx_size] << 5) & 0x60) |
- (((!S_IS_DEFINED(fixP->fx_addsy)) << 4) & 0x10));
+ colon (mri_control_stack->next);
- return;
-} /* tc_aout_fix_to_chars() */
+ for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
+ ;
-#endif /* OBJ_AOUT or OBJ_BOUT */
+ parse_mri_control_expression (s, qual, (const char *) NULL,
+ mri_control_stack->top, '\0');
-#ifndef WORKING_DOT_WORD
-const int md_short_jump_size = 4;
-const int md_long_jump_size = 6;
+ colon (mri_control_stack->bottom);
-void
- md_create_short_jump(ptr,from_addr,to_addr,frag,to_symbol)
-char *ptr;
-long from_addr,
- to_addr;
-fragS *frag;
-symbolS *to_symbol;
-{
- long offset;
+ input_line_pointer = s;
- offset = to_addr - (from_addr+2);
+ pop_mri_control ();
- md_number_to_chars(ptr ,(long)0x6000,2);
- md_number_to_chars(ptr+2,(long)offset,2);
-}
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
-void
- md_create_long_jump(ptr,from_addr,to_addr,frag,to_symbol)
-char *ptr;
-long from_addr,
- to_addr;
-fragS *frag;
-symbolS *to_symbol;
-{
- long offset;
-
- if (cpu_of_arch(current_architecture) < m68020) {
- offset=to_addr-S_GET_VALUE(to_symbol);
- md_number_to_chars(ptr ,(long)0x4EF9,2);
- md_number_to_chars(ptr+2,(long)offset,4);
- fix_new(frag,(ptr+2)-frag->fr_literal,4,to_symbol,(symbolS *)0,(long)0,0,
- NO_RELOC);
- } else {
- offset=to_addr - (from_addr+2);
- md_number_to_chars(ptr ,(long)0x60ff,2);
- md_number_to_chars(ptr+2,(long)offset,4);
- }
+ demand_empty_rest_of_line ();
}
-#endif
-/* Different values of OK tell what its OK to return. Things that aren't OK are an error (what a shock, no?)
-
- 0: Everything is OK
- 10: Absolute 1:8 only
- 20: Absolute 0:7 only
- 30: absolute 0:15 only
- 40: Absolute 0:31 only
- 50: absolute 0:127 only
- 55: absolute -64:63 only
- 60: absolute -128:127 only
- 70: absolute 0:4095 only
- 80: No bignums
-
- */
+/* Handle the MRI WHILE pseudo-op. */
-static int get_num(exp,ok)
-struct m68k_exp *exp;
-int ok;
+static void
+s_mri_while (qual)
+ int qual;
{
-#ifdef TEST2
- long l = 0;
+ char *s;
+
+ struct mri_control_info *n;
+
+ s = input_line_pointer;
+ while (! is_end_of_line[(unsigned char) *s]
+ && (! flag_mri || *s != '*'))
+ s++;
+ --s;
+ while (*s == ' ' || *s == '\t')
+ --s;
+ if (s - input_line_pointer > 1
+ && s[-1] == '.')
+ s -= 2;
+ if (s - input_line_pointer < 2
+ || strncasecmp (s - 1, "DO", 2) != 0)
+ {
+ as_bad ("missing do");
+ ignore_rest_of_line ();
+ return;
+ }
- if(!exp->e_beg)
- return 0;
- if(*exp->e_beg=='0') {
- if(exp->e_beg[1]=='x')
- sscanf(exp->e_beg+2,"%x",&l);
- else
- sscanf(exp->e_beg+1,"%O",&l);
- return l;
- }
- return atol(exp->e_beg);
-#else
- char *save_in;
- char c_save;
+ n = push_mri_control (mri_while);
- if(!exp) {
- /* Can't do anything */
- return 0;
- }
- if(!exp->e_beg || !exp->e_end) {
- seg(exp)=SEG_ABSOLUTE;
- adds(exp)=0;
- subs(exp)=0;
- offs(exp)= (ok==10) ? 1 : 0;
- as_warn("Null expression defaults to %ld",offs(exp));
- return 0;
- }
+ colon (n->next);
- exp->e_siz=0;
- if(/* ok!=80 && */ (exp->e_end[-1]==':' || exp->e_end[-1]=='.')
- && (exp->e_end-exp->e_beg)>=2) {
- switch(exp->e_end[0]) {
- case 's':
- case 'S':
- case 'b':
- case 'B':
- exp->e_siz=1;
- exp->e_end-=2;
- break;
- case 'w':
- case 'W':
- exp->e_siz=2;
- exp->e_end-=2;
- break;
- case 'l':
- case 'L':
- exp->e_siz=3;
- exp->e_end-=2;
- break;
- default:
- if (exp->e_end[-1] == ':')
- as_bad("Unknown size for expression \"%c\"",exp->e_end[0]);
- break;
- }
- }
- c_save=exp->e_end[1];
- exp->e_end[1]='\0';
- save_in=input_line_pointer;
- input_line_pointer=exp->e_beg;
- switch(expression(&(exp->e_exp))) {
- case SEG_PASS1:
- seg(exp)=SEG_ABSOLUTE;
- adds(exp)=0;
- subs(exp)=0;
- offs(exp)= (ok==10) ? 1 : 0;
- as_warn("Unknown expression: '%s' defaulting to %d",exp->e_beg,offs(exp));
- break;
+ parse_mri_control_expression (s - 1, qual, (const char *) NULL, n->bottom,
+ s[1] == '.' ? s[2] : '\0');
- case SEG_ABSENT:
- /* Do the same thing the VAX asm does */
- seg(exp)=SEG_ABSOLUTE;
- adds(exp)=0;
- subs(exp)=0;
- offs(exp)=0;
- if(ok==10) {
- as_warn("expression out of range: defaulting to 1");
- offs(exp)=1;
- }
- break;
- case SEG_ABSOLUTE:
- switch(ok) {
- case 10:
- if(offs(exp)<1 || offs(exp)>8) {
- as_warn("expression out of range: defaulting to 1");
- offs(exp)=1;
- }
- break;
- case 20:
- if(offs(exp)<0 || offs(exp)>7)
- goto outrange;
- break;
- case 30:
- if(offs(exp)<0 || offs(exp)>15)
- goto outrange;
- break;
- case 40:
- if(offs(exp)<0 || offs(exp)>32)
- goto outrange;
- break;
- case 50:
- if(offs(exp)<0 || offs(exp)>127)
- goto outrange;
- break;
- case 55:
- if(offs(exp)<-64 || offs(exp)>63)
- goto outrange;
- break;
- case 60:
- if(offs(exp)<-128 || offs(exp)>127)
- goto outrange;
- break;
- case 70:
- if(offs(exp)<0 || offs(exp)>4095) {
- outrange:
- as_warn("expression out of range: defaulting to 0");
- offs(exp)=0;
- }
- break;
- default:
- break;
- }
- break;
- case SEG_TEXT:
- case SEG_DATA:
- case SEG_BSS:
- case SEG_UNKNOWN:
- case SEG_DIFFERENCE:
- if(ok>=10 && ok<=70) {
- seg(exp)=SEG_ABSOLUTE;
- adds(exp)=0;
- subs(exp)=0;
- offs(exp)= (ok==10) ? 1 : 0;
- as_warn("Can't deal with expression \"%s\": defaulting to %ld",exp->e_beg,offs(exp));
- }
- break;
- case SEG_BIG:
- if (offs (exp) < 0 /* flonum */
- && (ok == 80 /* no bignums */
- || (ok > 10 /* small-int ranges including 0 ok */
- /* If we have a flonum zero, a zero integer should
- do as well (e.g., in moveq). */
- && generic_floating_point_number.exponent == 0
- && generic_floating_point_number.low[0] == 0)))
- {
- /* HACK! Turn it into a long */
- LITTLENUM_TYPE words[6];
-
- gen_to_words(words,2,8L);/* These numbers are magic! */
- seg(exp)=SEG_ABSOLUTE;
- adds(exp)=0;
- subs(exp)=0;
- offs(exp)=words[1]|(words[0]<<16);
- }
- else if(ok!=0) {
- seg(exp)=SEG_ABSOLUTE;
- adds(exp)=0;
- subs(exp)=0;
- offs(exp)= (ok==10) ? 1 : 0;
- as_warn("Can't deal with expression \"%s\": defaulting to %ld",exp->e_beg,offs(exp));
- }
- break;
- default:
- as_fatal("failed sanity check.");
- }
- if(input_line_pointer!=exp->e_end+1)
- as_bad("Ignoring junk after expression");
- exp->e_end[1]=c_save;
- input_line_pointer=save_in;
- if(exp->e_siz) {
- switch(exp->e_siz) {
- case 1:
- if(!isbyte(offs(exp)))
- as_warn("expression doesn't fit in BYTE");
- break;
- case 2:
- if(!isword(offs(exp)))
- as_warn("expression doesn't fit in WORD");
- break;
- }
- }
- return offs(exp);
-#endif
-} /* get_num() */
+ input_line_pointer = s + 1;
+ if (*input_line_pointer == '.')
+ input_line_pointer += 2;
-/* These are the back-ends for the various machine dependent pseudo-ops. */
-void demand_empty_rest_of_line(); /* Hate those extra verbose names */
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
-static void s_data1() {
- subseg_new(SEG_DATA,1);
- demand_empty_rest_of_line();
-} /* s_data1() */
+ demand_empty_rest_of_line ();
+}
-static void s_data2() {
- subseg_new(SEG_DATA,2);
- demand_empty_rest_of_line();
-} /* s_data2() */
+/* Handle the MRI ENDW pseudo-op. */
-static void s_bss()
+static void
+s_mri_endw (ignore)
+ int ignore;
{
- /* We don't support putting frags in the BSS segment, we fake it
- by marking in_bss, then looking at s_skip for clues */
+ char *buf;
- subseg_new(SEG_BSS, 0);
- demand_empty_rest_of_line();
-} /* s_bss() */
+ if (mri_control_stack == NULL
+ || mri_control_stack->type != mri_while)
+ {
+ as_bad ("endw without while");
+ ignore_rest_of_line ();
+ return;
+ }
-static void s_even() {
- register int temp;
- register long temp_fill;
+ buf = (char *) xmalloc (20 + strlen (mri_control_stack->next));
+ sprintf (buf, "bra %s", mri_control_stack->next);
+ md_assemble (buf);
+ free (buf);
- temp = 1; /* JF should be 2? */
- temp_fill = get_absolute_expression ();
- if ( ! need_pass_2 ) /* Never make frag if expect extra pass. */
- frag_align (temp, (int)temp_fill);
- demand_empty_rest_of_line();
-} /* s_even() */
+ colon (mri_control_stack->bottom);
-static void s_proc() {
- demand_empty_rest_of_line();
-} /* s_proc() */
+ pop_mri_control ();
-/* s_space is defined in read.c .skip is simply an alias to it. */
+ if (flag_mri)
+ {
+ while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
+ demand_empty_rest_of_line ();
+}
+\f
/*
* md_parse_option
* Invocation line includes a switch not recognized by the base assembler.
* errors. More than one may be specified. The default is
* -m68020 -m68851 -m68881. Note that -m68008 is a synonym
* for -m68000, and -m68882 is a synonym for -m68881.
+ * -[A]m[c]no-68851, -[A]m[c]no-68881
+ * Don't accept 688?1 instructions. (The "c" is kind of silly,
+ * so don't use or document it, but that's the way the parsing
+ * works).
+ *
+ * -pic Indicates PIC.
+ * -k Indicates PIC. (Sun 3 only.)
*
- * MAYBE_FLOAT_TOO is defined below so that specifying a processor type
- * (e.g. m68020) also requests that float instructions be included. This
- * is the default setup, mostly to avoid hassling users. A better
- * rearrangement of this structure would be to add an option to DENY
- * floating point opcodes, for people who want to really know there's none
- * of that funny floaty stuff going on. FIXME-later.
*/
-#ifndef MAYBE_FLOAT_TOO
-#define MAYBE_FLOAT_TOO m68881
+
+#ifdef OBJ_ELF
+CONST char *md_shortopts = "lSA:m:kQ:V";
+#else
+CONST char *md_shortopts = "lSA:m:k";
#endif
-int md_parse_option(argP,cntP,vecP)
-char **argP;
-int *cntP;
-char ***vecP;
-{
- switch(**argP) {
- case 'l': /* -l means keep external to 2 bit offset
- rather than 16 bit one */
- break;
+struct option md_longopts[] = {
+#define OPTION_PIC (OPTION_MD_BASE)
+ {"pic", no_argument, NULL, OPTION_PIC},
+#define OPTION_REGISTER_PREFIX_OPTIONAL (OPTION_MD_BASE + 1)
+ {"register-prefix-optional", no_argument, NULL,
+ OPTION_REGISTER_PREFIX_OPTIONAL},
+ {NULL, no_argument, NULL, 0}
+};
+size_t md_longopts_size = sizeof(md_longopts);
- case 'S': /* -S means that jbsr's always turn into jsr's. */
- break;
+int
+md_parse_option (c, arg)
+ int c;
+ char *arg;
+{
+ switch (c)
+ {
+ case 'l': /* -l means keep external to 2 bit offset
+ rather than 16 bit one */
+ flag_short_refs = 1;
+ break;
- case 'A':
- (*argP)++;
- /* intentional fall-through */
- case 'm':
- (*argP)++;
-
- if (**argP=='c') {
- (*argP)++;
- } /* allow an optional "c" */
-
- if (!strcmp(*argP, "68000")
- || !strcmp(*argP, "68008")) {
- current_architecture |= m68000;
- } else if (!strcmp(*argP, "68010")) {
-#ifdef TE_SUN
- omagic= 1<<16|OMAGIC;
-#endif
- current_architecture |= m68010;
+ case 'S': /* -S means that jbsr's always turn into
+ jsr's. */
+ flag_long_jumps = 1;
+ break;
- } else if (!strcmp(*argP, "68020")) {
- current_architecture |= m68020 | MAYBE_FLOAT_TOO;
+ case 'A':
+ if (*arg == 'm')
+ arg++;
+ /* intentional fall-through */
+ case 'm':
- } else if (!strcmp(*argP, "68030")) {
- current_architecture |= m68030 | MAYBE_FLOAT_TOO;
+ if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-')
+ {
+ int i;
+ unsigned long arch;
+ const char *oarg = arg;
- } else if (!strcmp(*argP, "68040")) {
- current_architecture |= m68040 | MAYBE_FLOAT_TOO;
+ arg += 3;
+ if (*arg == 'm')
+ {
+ arg++;
+ if (arg[0] == 'c' && arg[1] == '6')
+ arg++;
+ }
+ for (i = 0; i < n_archs; i++)
+ if (!strcmp (arg, archs[i].name))
+ break;
+ if (i == n_archs)
+ {
+ unknown:
+ as_bad ("unrecognized option `%s'", oarg);
+ return 0;
+ }
+ arch = archs[i].arch;
+ if (arch == m68881)
+ no_68881 = 1;
+ else if (arch == m68851)
+ no_68851 = 1;
+ else
+ goto unknown;
+ }
+ else
+ {
+ int i;
-#ifndef NO_68881
- } else if (!strcmp(*argP, "68881")) {
- current_architecture |= m68881;
+ if (arg[0] == 'c' && arg[1] == '6')
+ arg++;
- } else if (!strcmp(*argP, "68882")) {
- current_architecture |= m68882;
+ for (i = 0; i < n_archs; i++)
+ if (!strcmp (arg, archs[i].name))
+ {
+ unsigned long arch = archs[i].arch;
+ if (cpu_of_arch (arch))
+ /* It's a cpu spec. */
+ {
+ current_architecture &= ~m68000up;
+ current_architecture |= arch;
+ }
+ else if (arch == m68881)
+ {
+ current_architecture |= m68881;
+ no_68881 = 0;
+ }
+ else if (arch == m68851)
+ {
+ current_architecture |= m68851;
+ no_68851 = 0;
+ }
+ else
+ /* ??? */
+ abort ();
+ break;
+ }
+ if (i == n_archs)
+ {
+ as_bad ("unrecognized architecture specification `%s'", arg);
+ return 0;
+ }
+ }
+ break;
-#endif /* NO_68881 */
-#ifndef NO_68851
- } else if (!strcmp(*argP,"68851")) {
- current_architecture |= m68851;
+ case OPTION_PIC:
+ case 'k':
+ flag_want_pic = 1;
+ break; /* -pic, Position Independent Code */
-#endif /* NO_68851 */
- } else {
- as_warn("Unknown architecture, \"%s\". option ignored", *argP);
- } /* switch on architecture */
+ case OPTION_REGISTER_PREFIX_OPTIONAL:
+ flag_reg_prefix_optional = 1;
+ reg_prefix_optional_seen = 1;
+ break;
- while(**argP) (*argP)++;
+ /* -V: SVR4 argument to print version ID. */
+ case 'V':
+ print_version_id ();
+ break;
- break;
+ /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
+ should be emitted or not. FIXME: Not implemented. */
+ case 'Q':
+ break;
- case 'p':
- if (!strcmp(*argP,"pic")) {
- (*argP) += 3;
- break; /* -pic, Position Independent Code */
- } else {
- return(0);
- } /* pic or not */
+ default:
+ return 0;
+ }
- default:
- return 0;
- }
- return 1;
+ return 1;
}
-
+void
+md_show_usage (stream)
+ FILE *stream;
+{
+ fprintf(stream, "\
+680X0 options:\n\
+-l use 1 word for refs to undefined symbols [default 2]\n\
+-m68000 | -m68008 | -m68010 | -m68020 | -m68030 | -m68040 | -m68060\n\
+ | -m68302 | -m68331 | -m68332 | -m68333 | -m68340 | -m68360\n\
+ | -mcpu32\n\
+ specify variant of 680X0 architecture [default 68020]\n\
+-m68881 | -m68882 | -mno-68881 | -mno-68882\n\
+ target has/lacks floating-point coprocessor\n\
+ [default yes for 68020, 68030, and cpu32]\n");
+ fprintf(stream, "\
+-m68851 | -mno-68851\n\
+ target has/lacks memory-management unit coprocessor\n\
+ [default yes for 68020 and up]\n\
+-pic, -k generate position independent code\n\
+-S turn jbsr into jsr\n\
+--register-prefix-optional\n\
+ recognize register names without prefix character\n");
+}
+\f
#ifdef TEST2
/* TEST2: Test md_assemble() */
/* Warning, this routine probably doesn't work anymore */
-main()
+main ()
{
- struct m68k_it the_ins;
- char buf[120];
- char *cp;
- int n;
-
- m68k_ip_begin();
- for(;;) {
- if(!gets(buf) || !*buf)
- break;
- if(buf[0]=='|' || buf[1]=='.')
- continue;
- for(cp=buf;*cp;cp++)
- if(*cp=='\t')
- *cp=' ';
- if(is_label(buf))
- continue;
- memset(&the_ins, '\0', sizeof(the_ins));
- m68k_ip(&the_ins,buf);
- if(the_ins.error) {
- printf("Error %s in %s\n",the_ins.error,buf);
- } else {
- printf("Opcode(%d.%s): ",the_ins.numo,the_ins.args);
- for(n=0;n<the_ins.numo;n++)
- printf(" 0x%x",the_ins.opcode[n]&0xffff);
- printf(" ");
- print_the_insn(&the_ins.opcode[0],stdout);
- (void)putchar('\n');
- }
- for(n=0;n<strlen(the_ins.args)/2;n++) {
- if(the_ins.operands[n].error) {
- printf("op%d Error %s in %s\n",n,the_ins.operands[n].error,buf);
- continue;
- }
- printf("mode %d, reg %d, ",the_ins.operands[n].mode,the_ins.operands[n].reg);
- if(the_ins.operands[n].b_const)
- printf("Constant: '%.*s', ",1+the_ins.operands[n].e_const-the_ins.operands[n].b_const,the_ins.operands[n].b_const);
- printf("ireg %d, isiz %d, imul %d, ",the_ins.operands[n].ireg,the_ins.operands[n].isiz,the_ins.operands[n].imul);
- if(the_ins.operands[n].b_iadd)
- printf("Iadd: '%.*s',",1+the_ins.operands[n].e_iadd-the_ins.operands[n].b_iadd,the_ins.operands[n].b_iadd);
- (void)putchar('\n');
- }
+ struct m68k_it the_ins;
+ char buf[120];
+ char *cp;
+ int n;
+
+ m68k_ip_begin ();
+ for (;;)
+ {
+ if (!gets (buf) || !*buf)
+ break;
+ if (buf[0] == '|' || buf[1] == '.')
+ continue;
+ for (cp = buf; *cp; cp++)
+ if (*cp == '\t')
+ *cp = ' ';
+ if (is_label (buf))
+ continue;
+ memset (&the_ins, '\0', sizeof (the_ins));
+ m68k_ip (&the_ins, buf);
+ if (the_ins.error)
+ {
+ printf ("Error %s in %s\n", the_ins.error, buf);
+ }
+ else
+ {
+ printf ("Opcode(%d.%s): ", the_ins.numo, the_ins.args);
+ for (n = 0; n < the_ins.numo; n++)
+ printf (" 0x%x", the_ins.opcode[n] & 0xffff);
+ printf (" ");
+ print_the_insn (&the_ins.opcode[0], stdout);
+ (void) putchar ('\n');
}
- m68k_ip_end();
- return 0;
+ for (n = 0; n < strlen (the_ins.args) / 2; n++)
+ {
+ if (the_ins.operands[n].error)
+ {
+ printf ("op%d Error %s in %s\n", n, the_ins.operands[n].error, buf);
+ continue;
+ }
+ printf ("mode %d, reg %d, ", the_ins.operands[n].mode, the_ins.operands[n].reg);
+ if (the_ins.operands[n].b_const)
+ printf ("Constant: '%.*s', ", 1 + the_ins.operands[n].e_const - the_ins.operands[n].b_const, the_ins.operands[n].b_const);
+ printf ("ireg %d, isiz %d, imul %d, ", the_ins.operands[n].ireg, the_ins.operands[n].isiz, the_ins.operands[n].imul);
+ if (the_ins.operands[n].b_iadd)
+ printf ("Iadd: '%.*s',", 1 + the_ins.operands[n].e_iadd - the_ins.operands[n].b_iadd, the_ins.operands[n].b_iadd);
+ (void) putchar ('\n');
+ }
+ }
+ m68k_ip_end ();
+ return 0;
}
-is_label(str)
-char *str;
+is_label (str)
+ char *str;
{
- while(*str==' ')
- str++;
- while(*str && *str!=' ')
- str++;
- if(str[-1]==':' || str[1]=='=')
- return 1;
- return 0;
+ while (*str == ' ')
+ str++;
+ while (*str && *str != ' ')
+ str++;
+ if (str[-1] == ':' || str[1] == '=')
+ return 1;
+ return 0;
}
#endif
*/
-
-
-#ifdef DONTDEF
-abort()
-{
- printf("ABORT!\n");
- exit(12);
-}
-
-print_frags()
-{
- fragS *fragP;
- extern fragS *text_frag_root;
-
- for(fragP=text_frag_root;fragP;fragP=fragP->fr_next) {
- printf("addr %lu next 0x%x fix %ld var %ld symbol 0x%x offset %ld\n",
- fragP->fr_address,fragP->fr_next,fragP->fr_fix,fragP->fr_var,fragP->fr_symbol,fragP->fr_offset);
- printf("opcode 0x%x type %d subtype %d\n\n",fragP->fr_opcode,fragP->fr_type,fragP->fr_subtype);
- }
- fflush(stdout);
- return 0;
-}
-#endif
-
-#ifdef DONTDEF
-/*VARARGS1*/
-panic(format,args)
-char *format;
-{
- fputs("Internal error:",stderr);
- _doprnt(format,&args,stderr);
- (void)putc('\n',stderr);
- as_where();
- abort();
-}
-#endif
-
/* We have no need to default values of symbols. */
/* ARGSUSED */
symbolS *
- md_undefined_symbol (name)
-char *name;
-{
- return 0;
-}
-
-/* Parse an operand that is machine-specific.
- We just return without modifying the expression if we have nothing
- to do. */
-
-/* ARGSUSED */
-void
- md_operand (expressionP)
-expressionS *expressionP;
+md_undefined_symbol (name)
+ char *name;
{
+ return 0;
}
/* Round up a section size to the appropriate boundary. */
-long
- md_section_align (segment, size)
-segT segment;
-long size;
+valueT
+md_section_align (segment, size)
+ segT segment;
+ valueT size;
{
- return size; /* Byte alignment is fine */
+ return size; /* Byte alignment is fine */
}
/* Exactly what point is a PC-relative offset relative TO?
- On the 68k, they're relative to the address of the offset, plus
- its size. (??? Is this right? FIXME-SOON!) */
+ On the 68k, it is relative to the address of the first extension
+ word. The difference between the addresses of the offset and the
+ first extension word is stored in fx_pcrel_adjust. */
long
- md_pcrel_from (fixP)
-fixS *fixP;
+md_pcrel_from (fixP)
+ fixS *fixP;
{
- return(fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address);
+ int adjust;
+
+ /* Because fx_pcrel_adjust is a char, and may be unsigned, we store
+ -1 as 64. */
+ adjust = fixP->fx_pcrel_adjust;
+ if (adjust == 64)
+ adjust = -1;
+ return fixP->fx_where + fixP->fx_frag->fr_address - adjust;
}
-void
-tc_coff_symbol_emit_hook ()
+#ifndef BFD_ASSEMBLER
+/*ARGSUSED*/
+void
+tc_coff_symbol_emit_hook (ignore)
+ symbolS *ignore;
{
}
-int
-tc_coff_sizemachdep(frag)
-fragS *frag;
+int
+tc_coff_sizemachdep (frag)
+ fragS *frag;
{
- switch (frag->fr_subtype & 0x3)
- {
- case BYTE: return 1;
- case SHORT: return 2;
- case LONG: return 4;
- default: abort();
- }
-
+ switch (frag->fr_subtype & 0x3)
+ {
+ case BYTE:
+ return 1;
+ case SHORT:
+ return 2;
+ case LONG:
+ return 4;
+ default:
+ abort ();
+ return 0;
+ }
}
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+#endif
/* end of tc-m68k.c */
-
projects / deliverable / binutils-gdb.git / blobdiff