-/* tc-z8k.c -- Assemble code for the Zilog Z800N
- Copyright (C) 1992 Free Software Foundation.
+/* tc-z8k.c -- Assemble code for the Zilog Z800n
+ Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003,
+ 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
-/*
- Written By Steve Chamberlain
- sac@cygnus.com
- */
+/* Written By Steve Chamberlain <sac@cygnus.com>. */
#include <stdio.h>
-#define DEFINE_TABLE
-#include "../opcodes/z8k-opc.h"
#include "as.h"
#include "bfd.h"
-#include <ctype.h>
+#include "safe-ctype.h"
+#define DEFINE_TABLE
+#include "opcodes/z8k-opc.h"
-const char comment_chars[] =
-{'!', 0};
-const char line_separator_chars[] =
-{';', 0};
-const char line_comment_chars[] = { '#', 0};
+const char comment_chars[] = "!";
+const char line_comment_chars[] = "#";
+const char line_separator_chars[] = ";";
extern int machine;
extern int coff_flags;
int segmented_mode;
-const int md_reloc_size;
-/* This table describes all the machine specific pseudo-ops the assembler
- has to support. The fields are:
- pseudo-op name without dot
- function to call to execute this pseudo-op
- Integer arg to pass to the function
- */
-
-void cons ();
+/* This is non-zero if target was set from the command line. */
+static int z8k_target_from_cmdline;
-void
-s_segm ()
+static void
+s_segm (int segm)
{
- segmented_mode = 1;
- machine = bfd_mach_z8001;
- coff_flags = F_Z8001;
+ if (segm)
+ {
+ segmented_mode = 1;
+ bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8001);
+ }
+ else
+ {
+ segmented_mode = 0;
+ bfd_set_arch_mach (stdoutput, TARGET_ARCH, bfd_mach_z8002);
+ }
}
-void
-s_unseg ()
+static void
+even (int ignore ATTRIBUTE_UNUSED)
{
- segmented_mode = 0;
- machine = bfd_mach_z8002;
- coff_flags = F_Z8002;
+ frag_align (1, 0, 0);
+ record_alignment (now_seg, 1);
}
-static
-void even()
+static int
+tohex (int c)
{
- frag_align (1, 0);
- record_alignment(now_seg,1);
+ if (ISDIGIT (c))
+ return c - '0';
+ if (ISLOWER (c))
+ return c - 'a' + 10;
+ return c - 'A' + 10;
}
-void obj_coff_section();
-int tohex(c)
-int c;
-{
-if (isdigit(c)) return c - '0';
-if (islower(c)) return c - 'a' + 10;
-return c - 'A' + 10;
-}
-void sval()
+static void
+sval (int ignore ATTRIBUTE_UNUSED)
{
-
- SKIP_WHITESPACE();
- if (*input_line_pointer == '\'') {
- int c;
- input_line_pointer++;
- c = *input_line_pointer++;
- while (c != '\'') {
- if (c== '%') {
- c = (tohex(input_line_pointer[0]) << 4)
- | tohex(input_line_pointer[1]);
- input_line_pointer+=2;
- }
- FRAG_APPEND_1_CHAR(c);
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '\'')
+ {
+ int c;
+ input_line_pointer++;
c = *input_line_pointer++;
+ while (c != '\'')
+ {
+ if (c == '%')
+ {
+ c = (tohex (input_line_pointer[0]) << 4)
+ | tohex (input_line_pointer[1]);
+ input_line_pointer += 2;
+ }
+ FRAG_APPEND_1_CHAR (c);
+ c = *input_line_pointer++;
+ }
+ demand_empty_rest_of_line ();
}
- demand_empty_rest_of_line();
- }
-
}
-const pseudo_typeS md_pseudo_table[] =
-{
- {"int", cons, 2},
- {"data.b", cons, 1},
- {"data.w", cons, 2},
- {"data.l", cons, 4},
- {"form", listing_psize, 0},
- {"heading", listing_title, 0},
- {"import", s_ignore, 0},
- {"page", listing_eject, 0},
- {"program", s_ignore, 0},
- {"z8001", s_segm, 0},
- {"z8002", s_unseg, 0},
-
-
- {"segm", s_segm, 0},
- {"unsegm", s_unseg, 0},
- {"name", s_app_file, 0},
- {"global",s_globl,0},
- {"wval",cons,2},
- {"lval",cons,4},
- {"bval",cons,1},
- {"sval",sval,0},
- {"rsect",obj_coff_section,0},
- {"sect",obj_coff_section,0},
- {"block",s_space,0},
- {"even",even,0},
- {0, 0, 0}
+
+/* This table describes all the machine specific pseudo-ops the assembler
+ has to support. The fields are:
+ pseudo-op name without dot
+ function to call to execute this pseudo-op
+ Integer arg to pass to the function
+ */
+
+const pseudo_typeS md_pseudo_table[] = {
+ {"int" , cons , 2},
+ {"data.b" , cons , 1},
+ {"data.w" , cons , 2},
+ {"data.l" , cons , 4},
+ {"form" , listing_psize , 0},
+ {"heading", listing_title , 0},
+ {"import" , s_ignore , 0},
+ {"page" , listing_eject , 0},
+ {"program", s_ignore , 0},
+ {"z8001" , s_segm , 1},
+ {"z8002" , s_segm , 0},
+
+ {"segm" , s_segm , 1},
+ {"unsegm" , s_segm , 0},
+ {"unseg" , s_segm , 0},
+ {"name" , s_app_file , 0},
+ {"global" , s_globl , 0},
+ {"wval" , cons , 2},
+ {"lval" , cons , 4},
+ {"bval" , cons , 1},
+ {"sval" , sval , 0},
+ {"rsect" , obj_coff_section, 0},
+ {"sect" , obj_coff_section, 0},
+ {"block" , s_space , 0},
+ {"even" , even , 0},
+ {0 , 0 , 0}
};
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[] = "rRsSfFdDxXpP";
-const relax_typeS md_relax_table[1];
-
-static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
+/* Opcode mnemonics. */
+static struct hash_control *opcode_hash_control;
void
-md_begin ()
+md_begin (void)
{
- opcode_entry_type *opcode;
- char *prev_name = "";
- int idx = 0;
+ const opcode_entry_type *opcode;
+ int idx = -1;
opcode_hash_control = hash_new ();
for (opcode = z8k_table; opcode->name; opcode++)
{
- /* Only enter unique codes into the table */
- char *src = opcode->name;
-
- if (strcmp (opcode->name, prev_name))
- {
- hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
- idx++;
- }
- opcode->idx = idx;
- prev_name = opcode->name;
+ /* Only enter unique codes into the table. */
+ if (idx != opcode->idx)
+ hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
+ idx = opcode->idx;
}
- /* default to z8002 */
- s_unseg ();
+ /* Default to z8002. */
+ if (! z8k_target_from_cmdline)
+ s_segm (0);
- /* insert the pseudo ops too */
- for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
- {
- opcode_entry_type *fake_opcode;
- fake_opcode = (opcode_entry_type*)malloc(sizeof(opcode_entry_type));
- fake_opcode->name = md_pseudo_table[idx].poc_name,
- fake_opcode->func = (void *)(md_pseudo_table+idx);
- fake_opcode->opcode = 250;
-
- hash_insert(opcode_hash_control,fake_opcode->name,fake_opcode);
-
- }
+ /* Insert the pseudo ops, too. */
+ for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
+ {
+ opcode_entry_type *fake_opcode;
+ fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type));
+ fake_opcode->name = md_pseudo_table[idx].poc_name;
+ fake_opcode->func = (void *) (md_pseudo_table + idx);
+ fake_opcode->opcode = 250;
+ hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
+ }
}
-struct z8k_exp
-{
- char *e_beg;
- char *e_end;
- expressionS e_exp;
-};
-typedef struct z8k_op
-{
- char regsize; /* 'b','w','r','q' */
- unsigned int reg; /* 0..15 */
+typedef struct z8k_op {
+ /* CLASS_REG_xxx. */
+ int regsize;
+
+ /* 0 .. 15. */
+ unsigned int reg;
int mode;
- unsigned int x_reg; /* any other register associated with the mode */
- expressionS exp; /* any expression */
-}
+ /* Any other register associated with the mode. */
+ unsigned int x_reg;
-op_type;
+ /* Any expression. */
+ expressionS exp;
+} op_type;
static expressionS *da_operand;
static expressionS *imm_operand;
-int reg[16];
-int the_cc;
+static int reg[16];
+static int the_cc;
+static int the_ctrl;
+static int the_flags;
+static int the_interrupt;
-char *
-DEFUN (whatreg, (reg, src),
- int *reg AND
- char *src)
+static char *
+whatreg (unsigned int *reg, char *src)
{
- if (isdigit (src[1]))
+ if (ISDIGIT (src[1]))
{
*reg = (src[0] - '0') * 10 + src[1] - '0';
return src + 2;
}
}
-/*
- parse operands
+/* Parse operands
- rh0-rh7, rl0-rl7
- r0-r15
- rr0-rr14
- rq0--rq12
- WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
- r0l,r0h,..r7l,r7h
- @WREG
- @WREG+
- @-WREG
- #const
+ rh0-rh7, rl0-rl7
+ r0-r15
+ rr0-rr14
+ rq0--rq12
+ WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
+ r0l,r0h,..r7l,r7h
+ @WREG
+ @WREG+
+ @-WREG
+ #const
+*/
- */
+/* Try to parse a reg name. Return a pointer to the first character
+ in SRC after the reg name. */
-/* try and parse a reg name, returns number of chars consumed */
-char *
-DEFUN (parse_reg, (src, mode, reg),
- char *src AND
- int *mode AND
- unsigned int *reg)
+static char *
+parse_reg (char *src, int *mode, unsigned int *reg)
{
char *res = 0;
+ char regno;
- if (src[0] == 's' && src[1]=='p') {
- if (segmented_mode) {
- *mode = CLASS_REG_LONG;
- *reg = 14;
- }
- else
- {
- *mode = CLASS_REG_WORD;
- *reg = 15;
- }
- return src+2;
- }
- if (src[0] == 'r')
- {
- if (src[1] == 'r')
- {
- *mode = CLASS_REG_LONG;
- res = whatreg (reg, src + 2);
- }
- else if (src[1] == 'h' )
- {
- *mode = CLASS_REG_BYTE;
- res = whatreg (reg, src + 2) ;
- }
- else if (src[1] == 'l' )
- {
- *mode = CLASS_REG_BYTE;
- res = whatreg (reg, src + 2);
- *reg += 8;
- }
- else if (src[1] == 'q')
+ /* Check for stack pointer "sp" alias. */
+ if ((src[0] == 's' || src[0] == 'S')
+ && (src[1] == 'p' || src[1] == 'P')
+ && (src[2] == 0 || src[2] == ','))
{
- *mode = CLASS_REG_QUAD;
- res = whatreg (reg, src + 2);
+ if (segmented_mode)
+ {
+ *mode = CLASS_REG_LONG;
+ *reg = 14;
+ }
+ else
+ {
+ *mode = CLASS_REG_WORD;
+ *reg = 15;
+ }
+ return src + 2;
}
- else
+
+ if (src[0] == 'r' || src[0] == 'R')
{
- *mode = CLASS_REG_WORD;
- res = whatreg (reg, src + 1);
+ if (src[1] == 'r' || src[1] == 'R')
+ {
+ if (src[2] < '0' || src[2] > '9')
+ return res; /* Assume no register name but a label starting with 'rr'. */
+ *mode = CLASS_REG_LONG;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 14)
+ as_bad (_("register rr%d out of range"), regno);
+ if (regno & 1)
+ as_bad (_("register rr%d does not exist"), regno);
+ }
+ else if (src[1] == 'h' || src[1] == 'H')
+ {
+ if (src[2] < '0' || src[2] > '9')
+ return res; /* Assume no register name but a label starting with 'rh'. */
+ *mode = CLASS_REG_BYTE;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 7)
+ as_bad (_("register rh%d out of range"), regno);
+ }
+ else if (src[1] == 'l' || src[1] == 'L')
+ {
+ if (src[2] < '0' || src[2] > '9')
+ return res; /* Assume no register name but a label starting with 'rl'. */
+ *mode = CLASS_REG_BYTE;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 7)
+ as_bad (_("register rl%d out of range"), regno);
+ *reg += 8;
+ }
+ else if (src[1] == 'q' || src[1] == 'Q')
+ {
+ if (src[2] < '0' || src[2] > '9')
+ return res; /* Assume no register name but a label starting with 'rq'. */
+ *mode = CLASS_REG_QUAD;
+ res = whatreg (reg, src + 2);
+ regno = *reg;
+ if (regno > 12)
+ as_bad (_("register rq%d out of range"), regno);
+ if (regno & 3)
+ as_bad (_("register rq%d does not exist"), regno);
+ }
+ else
+ {
+ if (src[1] < '0' || src[1] > '9')
+ return res; /* Assume no register name but a label starting with 'r'. */
+ *mode = CLASS_REG_WORD;
+ res = whatreg (reg, src + 1);
+ regno = *reg;
+ if (regno > 15)
+ as_bad (_("register r%d out of range"), regno);
+ }
}
- }
return res;
-
}
-char *
-DEFUN (parse_exp, (s, op),
- char *s AND
- expressionS * op)
+static char *
+parse_exp (char *s, expressionS *op)
{
char *save = input_line_pointer;
char *new;
- segT seg;
input_line_pointer = s;
- seg = expr (0, op);
+ expression (op);
+ if (op->X_op == O_absent)
+ as_bad (_("missing operand"));
new = input_line_pointer;
input_line_pointer = save;
- if (SEG_NORMAL (seg))
- return new;
- switch (seg)
- {
- case SEG_ABSOLUTE:
- case SEG_UNKNOWN:
- case SEG_DIFFERENCE:
- case SEG_BIG:
- case SEG_REGISTER:
- return new;
- case SEG_ABSENT:
- as_bad ("Missing operand");
- return new;
- default:
- as_bad ("Don't understand operand of type %s", segment_name (seg));
- return new;
- }
+ return new;
}
/* The many forms of operand:
exp(r)
r(#exp)
r(r)
-
-
-
*/
-static
-char *
-DEFUN (checkfor, (ptr, what),
- char *ptr AND
- char what)
+static char *
+checkfor (char *ptr, char what)
{
if (*ptr == what)
ptr++;
else
- {
- as_bad ("expected %c", what);
- }
+ as_bad (_("expected %c"), what);
+
return ptr;
}
-/* Make sure the mode supplied is the size of a word */
+/* Make sure the mode supplied is the size of a word. */
+
static void
-DEFUN (regword, (mode, string),
- int mode AND
- char *string)
+regword (int mode, char *string)
{
int ok;
ok = CLASS_REG_WORD;
if (ok != mode)
{
- as_bad ("register is wrong size for a word %s", string);
+ as_bad (_("register is wrong size for a word %s"), string);
}
}
-/* Make sure the mode supplied is the size of an address */
+/* Make sure the mode supplied is the size of an address. */
+
static void
-DEFUN (regaddr, (mode, string),
- int mode AND
- char *string)
+regaddr (int mode, char *string)
{
int ok;
ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
if (ok != mode)
{
- as_bad ("register is wrong size for address %s", string);
+ as_bad (_("register is wrong size for address %s"), string);
}
}
-struct cc_names
-{
+struct ctrl_names {
int value;
char *name;
+};
+static struct ctrl_names ctrl_table[] = {
+ { 0x1, "flags" }, /* ldctlb only. */
+ { 0x2, "fcw" }, /* ldctl only. Applies to all remaining control registers. */
+ { 0x3, "refresh" },
+ { 0x4, "psapseg" },
+ { 0x5, "psapoff" },
+ { 0x5, "psap" },
+ { 0x6, "nspseg" },
+ { 0x7, "nspoff" },
+ { 0x7, "nsp" },
+ { 0 , 0 }
};
-struct cc_names table[] =
+static void
+get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
- 0x0, "f",
- 0x1, "lt",
- 0x2, "le",
- 0x3, "ule",
- 0x4, "ov",
- 0x4, "pe",
- 0x5, "mi",
- 0x6, "eq",
- 0x6, "z",
- 0x7, "c",
- 0x7, "ult",
- 0x8, "t",
- 0x9, "ge",
- 0xa, "gt",
- 0xb, "ugt",
- 0xc, "nov",
- 0xc, "po",
- 0xd, "pl",
- 0xe, "ne",
- 0xe, "nz",
- 0xf, "nc",
- 0xf, "uge",
- 0, 0
+ char *src = *ptr;
+ int i, l;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_CTRL;
+ for (i = 0; ctrl_table[i].name; i++)
+ {
+ l = strlen (ctrl_table[i].name);
+ if (! strncasecmp (ctrl_table[i].name, src, l))
+ {
+ the_ctrl = ctrl_table[i].value;
+ if (*(src + l) && *(src + l) != ',')
+ break;
+ *ptr = src + l; /* Valid control name found: "consume" it. */
+ return;
+ }
+ }
+ the_ctrl = 0;
+}
+
+struct flag_names {
+ int value;
+ char *name;
+};
+
+static struct flag_names flag_table[] = {
+ { 0x1, "P" },
+ { 0x1, "V" },
+ { 0x2, "S" },
+ { 0x4, "Z" },
+ { 0x8, "C" },
+ { 0x0, "+" },
+ { 0x0, "," },
+ { 0, 0 }
};
static void
-DEFUN (get_cc_operand, (ptr, mode, dst),
- char **ptr AND
- struct z8k_op *mode AND
- unsigned int dst)
+get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
char *src = *ptr;
- int r;
+ char c;
int i;
+ int j;
while (*src == ' ')
src++;
- mode->mode = CLASS_CC;
- for (i = 0; table[i].name; i++)
+ mode->mode = CLASS_FLAGS;
+ the_flags = 0;
+ for (j = 0; j <= 9; j++)
{
- int j;
+ if (!src[j])
+ goto done;
+ c = TOUPPER(src[j]);
+ for (i = 0; flag_table[i].name; i++)
+ {
+ if (flag_table[i].name[0] == c)
+ {
+ the_flags = the_flags | flag_table[i].value;
+ goto match;
+ }
+ }
+ goto done;
+ match:
+ ;
+ }
+ done:
+ *ptr = src + j;
+}
+
+struct interrupt_names {
+ int value;
+ char *name;
+};
+
+static struct interrupt_names intr_table[] = {
+ { 0x1, "nvi" },
+ { 0x2, "vi" },
+ { 0x3, "both" },
+ { 0x3, "all" },
+ { 0, 0 }
+};
- for (j = 0; table[i].name[j]; j++)
+static void
+get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
+{
+ char *src = *ptr;
+ int i, l;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_IMM;
+ the_interrupt = 0;
+
+ while (*src)
+ {
+ for (i = 0; intr_table[i].name; i++)
{
- if (table[i].name[j] != src[j])
- goto fail;
+ l = strlen (intr_table[i].name);
+ if (! strncasecmp (intr_table[i].name, src, l))
+ {
+ the_interrupt |= intr_table[i].value;
+ if (*(src + l) && *(src + l) != ',')
+ {
+ *ptr = src + l;
+ invalid:
+ as_bad (_("unknown interrupt %s"), src);
+ while (**ptr && ! is_end_of_line[(unsigned char) **ptr])
+ (*ptr)++; /* Consume rest of line. */
+ return;
+ }
+ src += l;
+ if (! *src)
+ {
+ *ptr = src;
+ return;
+ }
+ }
}
- the_cc = table[i].value;
- *ptr = src + j;
- return;
- fail:;
+ if (*src == ',')
+ src++;
+ else
+ {
+ *ptr = src;
+ goto invalid;
+ }
+ }
+
+ /* No interrupt type specified, opcode won't do anything. */
+ as_warn (_("opcode has no effect"));
+ the_interrupt = 0x0;
+}
+
+struct cc_names {
+ int value;
+ char *name;
+};
+
+static struct cc_names table[] = {
+ { 0x0, "f" },
+ { 0x1, "lt" },
+ { 0x2, "le" },
+ { 0x3, "ule" },
+ { 0x4, "ov/pe" },
+ { 0x4, "ov" },
+ { 0x4, "pe/ov" },
+ { 0x4, "pe" },
+ { 0x5, "mi" },
+ { 0x6, "eq" },
+ { 0x6, "z" },
+ { 0x7, "c/ult" },
+ { 0x7, "c" },
+ { 0x7, "ult/c" },
+ { 0x7, "ult" },
+ { 0x8, "t" },
+ { 0x9, "ge" },
+ { 0xa, "gt" },
+ { 0xb, "ugt" },
+ { 0xc, "nov/po" },
+ { 0xc, "nov" },
+ { 0xc, "po/nov" },
+ { 0xc, "po" },
+ { 0xd, "pl" },
+ { 0xe, "ne" },
+ { 0xe, "nz" },
+ { 0xf, "nc/uge" },
+ { 0xf, "nc" },
+ { 0xf, "uge/nc" },
+ { 0xf, "uge" },
+ { 0 , 0 }
+};
+
+static void
+get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
+{
+ char *src = *ptr;
+ int i, l;
+
+ while (*src == ' ')
+ src++;
+
+ mode->mode = CLASS_CC;
+ for (i = 0; table[i].name; i++)
+ {
+ l = strlen (table[i].name);
+ if (! strncasecmp (table[i].name, src, l))
+ {
+ the_cc = table[i].value;
+ if (*(src + l) && *(src + l) != ',')
+ break;
+ *ptr = src + l; /* Valid cc found: "consume" it. */
+ return;
+ }
}
- the_cc = 0x8;
- return;
+ the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */
}
static void
-DEFUN (get_operand, (ptr, mode, dst),
- char **ptr AND
- struct z8k_op *mode AND
- unsigned int dst)
+get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED)
{
char *src = *ptr;
char *end;
- unsigned int num;
- unsigned int len;
- unsigned int size;
mode->mode = 0;
}
else if (*src == '@')
{
- int d;
-
mode->mode = CLASS_IR;
- src = parse_reg (src + 1, &d, &mode->reg);
+ src = parse_reg (src + 1, &mode->regsize, &mode->reg);
}
else
{
- int regn;
+ unsigned int regn;
end = parse_reg (src, &mode->mode, ®n);
if (end)
{
- int nw, nr;
+ int nw;
+ unsigned int nr;
src = end;
if (*src == '(')
end = parse_reg (src, &nw, &nr);
if (end)
{
- /* Got Ra(Rb) */
+ /* Got Ra(Rb). */
src = end;
if (*src != ')')
- {
- as_bad ("Missing ) in ra(rb)");
- }
+ as_bad (_("Missing ) in ra(rb)"));
else
- {
- src++;
- }
+ src++;
regaddr (mode->mode, "ra(rb) ra");
- regword (mode->mode, "ra(rb) rb");
mode->mode = CLASS_BX;
mode->reg = regn;
mode->x_reg = nr;
}
else
{
- /* Got Ra(disp) */
+ /* Got Ra(disp). */
if (*src == '#')
src++;
src = parse_exp (src, &(mode->exp));
}
else
{
- /* No initial reg */
+ /* No initial reg. */
src = parse_exp (src, &(mode->exp));
if (*src == '(')
{
}
else
{
- /* Just an address */
+ /* Just an address. */
mode->mode = CLASS_DA;
mode->reg = 0;
mode->x_reg = 0;
*ptr = src;
}
-static
-char *
-DEFUN (get_operands, (opcode, op_end, operand),
- opcode_entry_type * opcode AND
- char *op_end AND
- op_type * operand)
+static char *
+get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand)
{
char *ptr = op_end;
+ char *savptr;
switch (opcode->noperands)
{
case 0:
operand[0].mode = 0;
operand[1].mode = 0;
+ while (*ptr == ' ')
+ ptr++;
break;
case 1:
- ptr++;
if (opcode->arg_info[0] == CLASS_CC)
+ {
+ get_cc_operand (&ptr, operand + 0, 0);
+ while (*ptr == ' ')
+ ptr++;
+ if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ {
+ as_bad (_("invalid condition code '%s'"), ptr);
+ while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ ptr++; /* Consume rest of line. */
+ }
+ }
+ else if (opcode->arg_info[0] == CLASS_FLAGS)
{
- get_cc_operand (&ptr, operand + 0, 0);
+ get_flags_operand (&ptr, operand + 0, 0);
+ while (*ptr == ' ')
+ ptr++;
+ if (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ {
+ as_bad (_("invalid flag '%s'"), ptr);
+ while (*ptr && ! is_end_of_line[(unsigned char) *ptr])
+ ptr++; /* Consume rest of line. */
+ }
}
+ else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2)))
+ get_interrupt_operand (&ptr, operand + 0, 0);
else
- {
+ get_operand (&ptr, operand + 0, 0);
- get_operand (&ptr, operand + 0, 0);
- }
operand[1].mode = 0;
break;
case 2:
- ptr++;
+ savptr = ptr;
if (opcode->arg_info[0] == CLASS_CC)
+ {
+ get_cc_operand (&ptr, operand + 0, 0);
+ while (*ptr == ' ')
+ ptr++;
+ if (*ptr != ',' && strchr (ptr + 1, ','))
+ {
+ savptr = ptr;
+ while (*ptr != ',')
+ ptr++;
+ *ptr = 0;
+ ptr++;
+ as_bad (_("invalid condition code '%s'"), savptr);
+ }
+ }
+ else if (opcode->arg_info[0] == CLASS_CTRL)
{
- get_cc_operand (&ptr, operand + 0, 0);
+ get_ctrl_operand (&ptr, operand + 0, 0);
+
+ if (the_ctrl == 0)
+ {
+ ptr = savptr;
+ get_operand (&ptr, operand + 0, 0);
+
+ if (ptr == 0)
+ return NULL;
+ if (*ptr == ',')
+ ptr++;
+ get_ctrl_operand (&ptr, operand + 1, 1);
+ if (the_ctrl == 0)
+ return NULL;
+ return ptr;
+ }
}
else
- {
+ get_operand (&ptr, operand + 0, 0);
- get_operand (&ptr, operand + 0, 0);
- }
- if(ptr == 0)
- return;
+ if (ptr == 0)
+ return NULL;
if (*ptr == ',')
ptr++;
get_operand (&ptr, operand + 1, 1);
break;
case 3:
- ptr++;
get_operand (&ptr, operand + 0, 0);
if (*ptr == ',')
ptr++;
break;
case 4:
- ptr++;
get_operand (&ptr, operand + 0, 0);
if (*ptr == ',')
ptr++;
ptr++;
get_cc_operand (&ptr, operand + 3, 3);
break;
+
default:
abort ();
}
}
/* Passed a pointer to a list of opcodes which use different
- addressing modes, return the opcode which matches the opcodes
- provided
- */
-
-static
-opcode_entry_type *
-DEFUN (get_specific, (opcode, operands),
- opcode_entry_type * opcode AND
- op_type * operands)
+ addressing modes. Return the opcode which matches the opcodes
+ provided. */
+static opcode_entry_type *
+get_specific (opcode_entry_type *opcode, op_type *operands)
{
opcode_entry_type *this_try = opcode;
int found = 0;
unsigned int noperands = opcode->noperands;
- unsigned int dispreg;
- unsigned int this_index = opcode->idx;
+ int this_index = opcode->idx;
while (this_index == opcode->idx && !found)
{
this_try = opcode++;
for (i = 0; i < noperands; i++)
{
- int mode = operands[i].mode;
+ unsigned int mode = operands[i].mode;
+
+ if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO))
+ {
+ mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO;
+ }
if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
{
- /* it could be an pc rel operand, if this is a da mode and
- we like disps, then insert it */
+ /* It could be a pc rel operand, if this is a da mode
+ and we like disps, then insert it. */
if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
{
- /* This is the case */
+ /* This is the case. */
operands[i].mode = CLASS_DISP;
}
else if (mode == CLASS_BA && this_try->arg_info[i])
{
- /* Can't think of a way to turn what we've been given into
- something that's ok */
+ /* Can't think of a way to turn what we've been
+ given into something that's OK. */
goto fail;
}
+ else if (this_try->arg_info[i] & CLASS_PR)
+ {
+ if (mode == CLASS_REG_LONG && segmented_mode)
+ {
+ /* OK. */
+ }
+ else if (mode == CLASS_REG_WORD && !segmented_mode)
+ {
+ /* OK. */
+ }
+ else
+ goto fail;
+ }
else
goto fail;
}
{
default:
break;
- case CLASS_X:
+ case CLASS_IRO:
+ if (operands[i].regsize != CLASS_REG_WORD)
+ as_bad (_("invalid indirect register size"));
+ reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+ break;
case CLASS_IR:
+ if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG)
+ || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD))
+ as_bad (_("invalid indirect register size"));
+ reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+ break;
+ case CLASS_X:
case CLASS_BA:
case CLASS_BX:
case CLASS_DISP:
case CLASS_REGN0:
reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
break;
+ case CLASS_CTRL:
+ if (this_try->opcode == OPC_ldctlb && the_ctrl != 1)
+ as_bad (_("invalid control register name"));
+ break;
}
}
found = 1;
- fail:;
+ fail:
+ ;
}
if (found)
return this_try;
return 0;
}
-static void
-DEFUN (check_operand, (operand, width, string),
- struct z8k_op *operand AND
- unsigned int width AND
- char *string)
-{
- if (operand->exp.X_add_symbol == 0
- && operand->exp.X_subtract_symbol == 0)
- {
-
- /* No symbol involved, let's look at offset, it's dangerous if any of
- the high bits are not 0 or ff's, find out by oring or anding with
- the width and seeing if the answer is 0 or all fs*/
- if ((operand->exp.X_add_number & ~width) != 0 &&
- (operand->exp.X_add_number | width) != (~0))
- {
- as_warn ("operand %s0x%x out of range.", string, operand->exp.X_add_number);
- }
- }
-
-}
-
static char buffer[20];
static void
-DEFUN (newfix, (ptr, type, operand),
- int ptr AND
- int type AND
- expressionS * operand)
+newfix (int ptr, int type, int size, expressionS *operand)
{
+ int is_pcrel = 0;
+ fixS *fixP;
+
+ /* Size is in nibbles. */
if (operand->X_add_symbol
- || operand->X_subtract_symbol
+ || operand->X_op_symbol
|| operand->X_add_number)
{
- fix_new (frag_now,
- ptr,
- 1,
- operand->X_add_symbol,
- operand->X_subtract_symbol,
- operand->X_add_number,
- 0,
- type);
+ switch(type)
+ {
+ case BFD_RELOC_8_PCREL:
+ case BFD_RELOC_Z8K_CALLR:
+ case BFD_RELOC_Z8K_DISP7:
+ is_pcrel = 1;
+ }
+ fixP = fix_new_exp (frag_now, ptr, size / 2,
+ operand, is_pcrel, type);
+ if (is_pcrel)
+ fixP->fx_no_overflow = 1;
}
}
static char *
-DEFUN (apply_fix, (ptr, type, operand, size),
- char *ptr AND
- int type AND
- expressionS * operand AND
- int size)
+apply_fix (char *ptr, int type, expressionS *operand, int size)
{
- int n = operand->X_add_number;
+ long n = operand->X_add_number;
- operand->X_add_number = n;
- newfix ((ptr - buffer) / 2, type, operand);
-#if 1
+ /* size is in nibbles. */
+
+ newfix ((ptr - buffer) / 2, type, size + 1, operand);
switch (size)
{
- case 8: /* 8 nibbles == 32 bits */
+ case 8: /* 8 nibbles == 32 bits. */
*ptr++ = n >> 28;
*ptr++ = n >> 24;
*ptr++ = n >> 20;
*ptr++ = n >> 16;
- case 4: /* 4 niblles == 16 bits */
+ case 4: /* 4 nibbles == 16 bits. */
*ptr++ = n >> 12;
*ptr++ = n >> 8;
case 2:
*ptr++ = n >> 0;
break;
}
-#endif
return ptr;
-
}
-/* Now we know what sort of opcodes it is, lets build the bytes -
- */
-#define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y;
+/* Now we know what sort of opcodes it is. Let's build the bytes. */
+
static void
-DEFUN (build_bytes, (this_try, operand),
- opcode_entry_type * this_try AND
- struct z8k_op *operand)
+build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED)
{
- unsigned int i;
-
- int length;
- char *output;
char *output_ptr = buffer;
- char part;
int c;
- char high;
- int nib;
int nibble;
- unsigned short *class_ptr;
+ unsigned int *class_ptr;
frag_wane (frag_now);
frag_new (0);
- memset (buffer, 20, 0);
+ if (frag_room () < 8)
+ frag_grow (8); /* Make room for maximum instruction size. */
+
+ memset (buffer, 0, sizeof (buffer));
class_ptr = this_try->byte_info;
-top:;
- for (nibble = 0; c = *class_ptr++; nibble++)
+ for (nibble = 0; (c = *class_ptr++); nibble++)
{
switch (c & CLASS_MASK)
{
default:
-
abort ();
+
case CLASS_ADDRESS:
- /* Direct address, we don't cope with the SS mode right now */
+ /* Direct address, we don't cope with the SS mode right now. */
if (segmented_mode)
{
- da_operand->X_add_number |= 0x80000000;
- output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8);
+ /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_32, da_operand, 8);
}
else
{
- output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
}
da_operand = 0;
break;
case CLASS_DISP8:
- /* pc rel 8 bit */
- output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2);
+ /* pc rel 8 bit */
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_8_PCREL, da_operand, 2);
+ da_operand = 0;
+ break;
+
+ case CLASS_0DISP7:
+ /* pc rel 7 bit */
+ *output_ptr = 0;
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
da_operand = 0;
+ break;
+ case CLASS_1DISP7:
+ /* pc rel 7 bit */
+ *output_ptr = 0x80;
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_DISP7, da_operand, 2);
+ output_ptr[-2] = 0x8;
+ da_operand = 0;
break;
+
case CLASS_BIT_1OR2:
*output_ptr = c & 0xf;
- if (imm_operand)
- {
- if (imm_operand->X_add_number==2)
- {
- *output_ptr |= 2;
- }
- else if (imm_operand->X_add_number != 1)
+ if (imm_operand)
{
- as_bad("immediate must be 1 or 2");
+ if (imm_operand->X_add_number == 2)
+ *output_ptr |= 2;
+ else if (imm_operand->X_add_number != 1)
+ as_bad (_("immediate must be 1 or 2"));
}
- }
- else
- {
- as_bad("immediate 1 or 2 expected");
- }
+ else
+ as_bad (_("immediate 1 or 2 expected"));
output_ptr++;
break;
case CLASS_CC:
*output_ptr++ = the_cc;
break;
+ case CLASS_0CCC:
+ if (the_ctrl < 2 || the_ctrl > 7)
+ as_bad (_("invalid control register name"));
+ *output_ptr++ = the_ctrl;
+ break;
+ case CLASS_1CCC:
+ if (the_ctrl < 2 || the_ctrl > 7)
+ as_bad (_("invalid control register name"));
+ *output_ptr++ = the_ctrl | 0x8;
+ break;
+ case CLASS_00II:
+ *output_ptr++ = (~the_interrupt & 0x3);
+ break;
+ case CLASS_01II:
+ *output_ptr++ = (~the_interrupt & 0x3) | 0x4;
+ break;
+ case CLASS_FLAGS:
+ *output_ptr++ = the_flags;
+ break;
+ case CLASS_IGNORE:
case CLASS_BIT:
*output_ptr++ = c & 0xf;
break;
case CLASS_REGN0:
if (reg[c & 0xf] == 0)
- {
- as_bad ("can't use R0 here");
- }
+ as_bad (_("can't use R0 here"));
+ /* Fall through. */
case CLASS_REG:
case CLASS_REG_BYTE:
case CLASS_REG_WORD:
case CLASS_REG_LONG:
case CLASS_REG_QUAD:
- /* Insert bit mattern of
- right reg */
+ /* Insert bit mattern of right reg. */
*output_ptr++ = reg[c & 0xf];
break;
case CLASS_DISP:
- output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4);
+ switch (c & ARG_MASK)
+ {
+ case ARG_DISP12:
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_CALLR, da_operand, 4);
+ break;
+ case ARG_DISP16:
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_16_PCREL, da_operand, 4);
+ break;
+ default:
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_16, da_operand, 4);
+ }
da_operand = 0;
break;
-
+
case CLASS_IMM:
{
- nib = 0;
switch (c & ARG_MASK)
{
- case ARG_IMM4:
- output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
+ case ARG_NIM4:
+ if (imm_operand->X_add_number > 15)
+ as_bad (_("immediate value out of range"));
+ imm_operand->X_add_number = -imm_operand->X_add_number;
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
break;
+ /*case ARG_IMMNMINUS1: not used. */
case ARG_IMM4M1:
imm_operand->X_add_number--;
- output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
- break;
- case ARG_IMMNMINUS1:
- imm_operand->X_add_number--;
- output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
+ /* Drop through. */
+ case ARG_IMM4:
+ if (imm_operand->X_add_number > 15)
+ as_bad (_("immediate value out of range"));
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_Z8K_IMM4L, imm_operand, 1);
break;
case ARG_NIM8:
imm_operand->X_add_number = -imm_operand->X_add_number;
+ /* Drop through. */
case ARG_IMM8:
- output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_8, imm_operand, 2);
break;
case ARG_IMM16:
- output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_16, imm_operand, 4);
break;
-
case ARG_IMM32:
- output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
+ output_ptr = apply_fix (output_ptr, BFD_RELOC_32, imm_operand, 8);
break;
-
default:
abort ();
}
}
}
- /* Copy from the nibble buffer into the frag */
-
+ /* Copy from the nibble buffer into the frag. */
{
int length = (output_ptr - buffer) / 2;
char *src = buffer;
src += 2;
fragp++;
}
-
}
-
}
/* This is the guts of the machine-dependent assembler. STR points to a
- machine dependent instruction. This funciton is supposed to emit
- the frags/bytes it assembles to.
- */
+ machine dependent instruction. This function is supposed to emit
+ the frags/bytes it assembles to. */
void
-DEFUN (md_assemble, (str),
- char *str)
+md_assemble (char *str)
{
+ char c;
char *op_start;
char *op_end;
- unsigned int i;
- struct z8k_op operand[3];
+ struct z8k_op operand[4];
opcode_entry_type *opcode;
- opcode_entry_type *prev_opcode;
-
- char *dot = 0;
- char c;
- /* Drop leading whitespace */
+ /* Drop leading whitespace. */
while (*str == ' ')
- str++;
+ str++;
- /* find the op code end */
+ /* Find the op code end. */
for (op_start = op_end = str;
- *op_end != 0 && *op_end != ' ';
+ *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end];
op_end++)
- {
- }
-
- ;
+ ;
if (op_end == op_start)
- {
- as_bad ("can't find opcode ");
- }
+ {
+ as_bad (_("can't find opcode "));
+ }
c = *op_end;
- *op_end = 0;
-
- opcode = (opcode_entry_type *) hash_find (opcode_hash_control,
- op_start);
+ *op_end = 0; /* Zero-terminate op code string for hash_find() call. */
+ opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start);
if (opcode == NULL)
- {
- as_bad ("unknown opcode");
- return;
- }
+ {
+ as_bad (_("unknown opcode"));
+ return;
+ }
- if (opcode->opcode == 250)
- {
- /* was really a pseudo op */
+ *op_end = c; /* Restore original string. */
+
+ if (opcode->opcode == 250)
+ {
+ pseudo_typeS *p;
+ char oc;
+ char *old = input_line_pointer;
- pseudo_typeS *p ;
- char oc;
+ /* Was really a pseudo op. */
- char *old = input_line_pointer;
- *op_end = c;
+ input_line_pointer = op_end;
-
- input_line_pointer = op_end;
+ oc = *old;
+ *old = '\n';
+ while (*input_line_pointer == ' ')
+ input_line_pointer++;
+ p = (pseudo_typeS *) (opcode->func);
- oc = *old;
- *old = '\n';
- while (*input_line_pointer == ' ')
- input_line_pointer++;
- p = (pseudo_typeS *)(opcode->func);
+ (p->poc_handler) (p->poc_val);
+ input_line_pointer = old;
+ *old = oc;
+ }
+ else
+ {
+ char *new_input_line_pointer;
- (p->poc_handler)(p->poc_val);
- input_line_pointer = old;
- *old = oc;
- }
- else {
- input_line_pointer = get_operands (opcode, op_end,
- operand);
- *op_end = c;
- prev_opcode = opcode;
+ new_input_line_pointer = get_operands (opcode, op_end, operand);
+ if (new_input_line_pointer)
+ {
+ input_line_pointer = new_input_line_pointer;
+ opcode = get_specific (opcode, operand);
+ }
- opcode = get_specific (opcode, operand);
+ if (new_input_line_pointer == NULL || opcode == NULL)
+ {
+ /* Couldn't find an opcode which matched the operands. */
+ char *where = frag_more (2);
- if (opcode == 0)
- {
- /* Couldn't find an opcode which matched the operands */
- char *where = frag_more (2);
+ where[0] = 0x0;
+ where[1] = 0x0;
- where[0] = 0x0;
- where[1] = 0x0;
+ as_bad (_("Can't find opcode to match operands"));
+ return;
+ }
- as_bad ("Can't find opcode to match operands");
- return;
+ build_bytes (opcode, operand);
}
-
- build_bytes (opcode, operand);
- }
}
-void
-DEFUN (tc_crawl_symbol_chain, (headers),
- object_headers * headers)
-{
- printf ("call to tc_crawl_symbol_chain \n");
-}
+/* We have no need to default values of symbols. */
symbolS *
-DEFUN (md_undefined_symbol, (name),
- char *name)
+md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
return 0;
}
-void
-DEFUN (tc_headers_hook, (headers),
- object_headers * headers)
-{
- printf ("call to tc_headers_hook \n");
-}
-
-void
-DEFUN_VOID (md_end)
-{
-}
-
-/* Various routines to kill one day */
-/* Equal to MAX_PRECISION in atof-ieee.c */
+/* Various routines to kill one day. */
+/* 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.
- */
+/* 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;
+md_atof (int type, char *litP, int *sizeP)
{
int prec;
LITTLENUM_TYPE words[MAX_LITTLENUMS];
LITTLENUM_TYPE *wordP;
char *t;
- char *atof_ieee ();
switch (type)
{
default:
*sizeP = 0;
- return "Bad call to MD_ATOF()";
+ return _("Bad call to MD_ATOF()");
}
t = atof_ieee (input_line_pointer, type, words);
if (t)
md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
- return ""; /* Someone should teach Dean about null pointers */
+ return 0;
}
+\f
+const char *md_shortopts = "z:";
-int
-md_parse_option (argP, cntP, vecP)
- char **argP;
- int *cntP;
- char ***vecP;
+struct option md_longopts[] =
+ {
+#define OPTION_RELAX (OPTION_MD_BASE)
+ {"linkrelax", no_argument, NULL, OPTION_RELAX},
+ {NULL, no_argument, NULL, 0}
+ };
+
+size_t md_longopts_size = sizeof (md_longopts);
+int
+md_parse_option (int c, char *arg)
{
- if (!strcmp(*argP,"z8001")) {
- s_segm();
- }
- else if (!strcmp(*argP,"z8002")) {
- s_unseg();
- }
- else return 0;
- **argP = 0;
- return 1;
-}
+ switch (c)
+ {
+ case 'z':
+ if (!strcmp (arg, "8001"))
+ s_segm (1);
+ else if (!strcmp (arg, "8002"))
+ s_segm (0);
+ else
+ {
+ as_bad (_("invalid architecture -z%s"), arg);
+ return 0;
+ }
+ z8k_target_from_cmdline = 1;
+ break;
-int md_short_jump_size;
+ case OPTION_RELAX:
+ linkrelax = 1;
+ break;
-void
-tc_aout_fix_to_chars ()
-{
- printf ("call to tc_aout_fix_to_chars \n");
- abort ();
+ default:
+ return 0;
+ }
+
+ return 1;
}
void
-md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
- char *ptr;
- addressT from_addr;
- addressT to_addr;
- fragS *frag;
- symbolS *to_symbol;
+md_show_usage (FILE *stream)
{
- as_fatal ("failed sanity check.");
+ fprintf (stream, _("\
+ Z8K options:\n\
+ -z8001 generate segmented code\n\
+ -z8002 generate unsegmented code\n\
+ -linkrelax create linker relaxable code\n"));
}
-
+\f
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;
+md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
+ segT sec ATTRIBUTE_UNUSED,
+ fragS *fragP ATTRIBUTE_UNUSED)
{
- as_fatal ("failed sanity check.");
+ printf (_("call to md_convert_frag\n"));
+ abort ();
}
-void
-md_convert_frag (headers, fragP)
- object_headers *headers;
- fragS *fragP;
+/* Generate a machine dependent reloc from a fixup. */
+arelent*
+tc_gen_reloc (asection *section ATTRIBUTE_UNUSED,
+ fixS *fixp ATTRIBUTE_UNUSED)
{
- printf ("call to md_convert_frag \n");
- abort ();
+ arelent *reloc;
+
+ reloc = xmalloc (sizeof (*reloc));
+ reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+ reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+ reloc->addend = fixp->fx_offset;
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
+
+ if (! reloc->howto)
+ {
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ "Cannot represent %s relocation in object file",
+ bfd_get_reloc_code_name (fixp->fx_r_type));
+ abort ();
+ }
+ return reloc;
}
valueT
-DEFUN (md_section_align, (seg, size),
- segT seg AND
- valueT size)
+md_section_align (segT seg, valueT size)
{
- return ((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
+ int align = bfd_get_section_alignment (stdoutput, seg);
+ valueT mask = ((valueT) 1 << align) - 1;
+ return (size + mask) & ~mask;
}
+/* Attempt to simplify or eliminate a fixup. To indicate that a fixup
+ has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL,
+ we will have to generate a reloc entry. */
void
-md_apply_fix (fixP, val)
- fixS *fixP;
- long val;
+md_apply_fix (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED)
{
+ long val = * (long *) valP;
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
switch (fixP->fx_r_type)
{
- case R_IMM4L:
- buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf);
+ case BFD_RELOC_Z8K_IMM4L:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ buf[0] = (buf[0] & 0xf0) | (val & 0xf);
break;
- case R_JR:
+ case BFD_RELOC_8:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ *buf++ = val;
+ break;
- *buf++ = val;
- /* if (val != 0) abort();*/
+ case BFD_RELOC_16:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ }
break;
- case R_IMM8:
- buf[0] += val;
+ case BFD_RELOC_32:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ *buf++ = (val >> 24);
+ *buf++ = (val >> 16);
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ }
break;
- case R_IMM16:
- *buf++ = (val >> 8);
- *buf++ = val;
+
+ case BFD_RELOC_8_PCREL:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ if (val & 1)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("cannot branch to odd address"));
+ val /= 2;
+ if (val > 127 || val < -128)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("relative jump out of range"));
+ *buf++ = val;
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
+ break;
+
+ case BFD_RELOC_16_PCREL:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
+ if (val > 32767 || val < -32768)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("relative address out of range"));
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
break;
- case R_IMM32:
- *buf++ = (val >> 24);
- *buf++ = (val >> 16);
- *buf++ = (val >> 8);
- *buf++ = val;
+
+ case BFD_RELOC_Z8K_CALLR:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ if (val & 1)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("cannot branch to odd address"));
+ if (val > 4096 || val < -4095)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("relative call out of range"));
+ val = -val / 2;
+ *buf = (*buf & 0xf0) | ((val >> 8) & 0xf);
+ buf++;
+ *buf++ = val & 0xff;
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
break;
-#if 0
- case R_DA | R_SEG:
- *buf++ = (val >> 16);
- *buf++ = 0x00;
- *buf++ = (val >> 8);
- *buf++ = val;
+
+ case BFD_RELOC_Z8K_DISP7:
+ if (fixP->fx_addsy)
+ {
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 0;
+ }
+ else
+ {
+ if (val & 1)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("cannot branch to odd address"));
+ val /= 2;
+ if (val > 0 || val < -127)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("relative jump out of range"));
+ *buf = (*buf & 0x80) | (-val & 0x7f);
+ fixP->fx_no_overflow = 1;
+ fixP->fx_done = 1;
+ }
break;
-#endif
default:
+ printf(_("md_apply_fix: unknown r_type 0x%x\n"), fixP->fx_r_type);
abort ();
-
}
-}
-void
-DEFUN (md_operand, (expressionP), expressionS * expressionP)
-{
+ if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
+ fixP->fx_done = 1;
}
-int md_long_jump_size;
int
-md_estimate_size_before_relax (fragP, segment_type)
- register fragS *fragP;
- register segT segment_type;
+md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
+ segT segment_type ATTRIBUTE_UNUSED)
{
- printf ("call tomd_estimate_size_before_relax \n");
+ printf (_("call to md_estimate_size_before_relax\n"));
abort ();
}
-/* Put number into target byte order */
+/* Put number into target byte order. */
void
-DEFUN (md_number_to_chars, (ptr, use, nbytes),
- char *ptr AND
- valueT use AND
- int nbytes)
-{
- switch (nbytes)
- {
- case 4:
- *ptr++ = (use >> 24) & 0xff;
- case 3:
- *ptr++ = (use >> 16) & 0xff;
- case 2:
- *ptr++ = (use >> 8) & 0xff;
- case 1:
- *ptr++ = (use >> 0) & 0xff;
- break;
- default:
- abort ();
- }
-}
-long
-md_pcrel_from (fixP)
- fixS *fixP;
+md_number_to_chars (char *ptr, valueT use, int nbytes)
{
- abort ();
+ number_to_chars_bigendian (ptr, use, nbytes);
}
-void
-tc_coff_symbol_emit_hook ()
+/* On the Z8000, a PC-relative offset is relative to the address of the
+ instruction plus its size. */
+long
+md_pcrel_from (fixS *fixP)
{
+ return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
}
void
-tc_reloc_mangle (fix_ptr, intr, base)
- fixS *fix_ptr;
- struct internal_reloc *intr;
- bfd_vma base;
-
+tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED)
{
- symbolS *symbol_ptr;
-
- symbol_ptr = fix_ptr->fx_addsy;
-
- /* If this relocation is attached to a symbol then it's ok
- to output it */
- if (fix_ptr->fx_r_type == 0)
- {
- /* cons likes to create reloc32's whatever the size of the reloc..
- */
- switch (fix_ptr->fx_size)
- {
-
- case 2:
- intr->r_type = R_IMM16;
- break;
- case 1:
- intr->r_type = R_IMM8;
- break;
- case 4:
- intr->r_type = R_IMM32;
- break;
- default:
- abort ();
-
- }
-
- }
- else
- {
- intr->r_type = fix_ptr->fx_r_type;
- }
-
- intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
- intr->r_offset = fix_ptr->fx_offset;
-
- if (symbol_ptr)
- intr->r_symndx = symbol_ptr->sy_number;
- else
- intr->r_symndx = -1;
-
}
projects / deliverable / binutils-gdb.git / blobdiff