-/* tc-h8300.c -- Assemble code for the Hitachi H8/300
- Copyright (C) 1991, 1992 Free Software Foundation.
-
+/* tc-h8300.c -- Assemble code for the Renesas H8/300
+ Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
+ 2001, 2002, 2003 Free Software Foundation, Inc.
+
This file is part of GAS, the GNU Assembler.
-
+
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
-
+
GAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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. */
+ 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, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
-/*
- Written By Steve Chamberlain
- sac@cygnus.com
- */
+/* Written By Steve Chamberlain <sac@cygnus.com>. */
#include <stdio.h>
#include "as.h"
+#include "subsegs.h"
#include "bfd.h"
+
+#ifdef BFD_ASSEMBLER
+#include "dwarf2dbg.h"
+#endif
+
+#define DEFINE_TABLE
+#define h8_opcodes ops
#include "opcode/h8300.h"
-#include <ctype.h>
-#include "listing.h"
+#include "safe-ctype.h"
-char comment_chars[] = { ';',0 };
-char line_separator_chars[] = { '$' ,0};
+#ifdef OBJ_ELF
+#include "elf/h8.h"
+#endif
-/* 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 char comment_chars[] = ";";
+const char line_comment_chars[] = "#";
+const char line_separator_chars[] = "";
+
+void cons PARAMS ((int));
+void sbranch PARAMS ((int));
+void h8300hmode PARAMS ((int));
+void h8300smode PARAMS ((int));
+void h8300hnmode PARAMS ((int));
+void h8300snmode PARAMS ((int));
+void h8300sxmode PARAMS ((int));
+static void pint PARAMS ((int));
+
+int Hmode;
+int Smode;
+int Nmode;
+int SXmode;
+
+#define PSIZE (Hmode ? L_32 : L_16)
+#define DSYMMODE (Hmode ? L_24 : L_16)
-void cons();
+int bsize = L_8; /* Default branch displacement. */
-const pseudo_typeS md_pseudo_table[] =
+struct h8_instruction
{
-{ "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},
-{ 0,0,0 }
+ int length;
+ int noperands;
+ int idx;
+ int size;
+ const struct h8_opcode *opcode;
};
-int md_reloc_size ;
+struct h8_instruction *h8_instructions;
-const char EXP_CHARS[] = "eE";
+void
+h8300hmode (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ Hmode = 1;
+ Smode = 0;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300h))
+ as_warn (_("could not set architecture and machine"));
+#endif
+}
+
+void
+h8300smode (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ Smode = 1;
+ Hmode = 1;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300s))
+ as_warn (_("could not set architecture and machine"));
+#endif
+}
+
+void
+h8300hnmode (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ Hmode = 1;
+ Smode = 0;
+ Nmode = 1;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300hn))
+ as_warn (_("could not set architecture and machine"));
+#endif
+}
-/* Chars that mean this number is a floating point constant */
-/* As in 0f12.456 */
-/* or 0d1.2345e12 */
-char FLT_CHARS[] = "rRsSfFdDxXpP";
+void
+h8300snmode (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ Smode = 1;
+ Hmode = 1;
+ Nmode = 1;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300sn))
+ as_warn (_("could not set architecture and machine"));
+#endif
+}
+void
+h8300sxmode (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ Smode = 1;
+ Hmode = 1;
+ SXmode = 1;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300sx))
+ as_warn (_("could not set architecture and machine"));
+#endif
+}
-const relax_typeS md_relax_table[1];
+void
+h8300sxnmode (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ Smode = 1;
+ Hmode = 1;
+ SXmode = 1;
+ Nmode = 1;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300sxn))
+ as_warn (_("could not set architecture and machine"));
+#endif
+}
+void
+sbranch (size)
+ int size;
+{
+ bsize = size;
+}
-static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
+static void
+pint (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ cons (Hmode ? 4 : 2);
+}
+/* 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. */
-/*
- This function is called once, at assembler startup time. This should
- set up all the tables, etc that the MD part of the assembler needs
- */
-#if 0
-/* encode the size and number into the number field
- xxnnnn
- 00 8 bit
- 01 16 bit
- 10 ccr
- nnnnreg number
- */
-#define WORD_REG 0x10
-#define BYTE_REG 0x00
-#define CCR_REG 0x20
-struct reg_entry
+const pseudo_typeS md_pseudo_table[] =
{
- char *name;
- char number;
+ {"h8300h", h8300hmode, 0},
+ {"h8300hn", h8300hnmode, 0},
+ {"h8300s", h8300smode, 0},
+ {"h8300sn", h8300snmode, 0},
+ {"h8300sx", h8300sxmode, 0},
+ {"h8300sxn", h8300sxnmode, 0},
+ {"sbranch", sbranch, L_8},
+ {"lbranch", sbranch, L_16},
+
+ {"int", pint, 0},
+ {"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},
+ {0, 0, 0}
};
-struct reg_entry reg_list[] = {
- "r0",WORD_REG +0,
- "r1",WORD_REG +1,
- "r2",WORD_REG +2,
- "r3",WORD_REG +3,
- "r4",WORD_REG +4,
- "r5",WORD_REG +5,
- "r6",WORD_REG +6,
- "r7",WORD_REG +7,
- "fp",WORD_REG +6,
- "sp",WORD_REG +7,
- "r0h",BYTE_REG + 0,
- "r0l",BYTE_REG + 1,
- "r1h",BYTE_REG + 2,
- "r1l",BYTE_REG + 3,
- "r2h",BYTE_REG + 4,
- "r2l",BYTE_REG + 5,
- "r3h",BYTE_REG + 6,
- "r3l",BYTE_REG + 7,
- "r4h",BYTE_REG + 8,
- "r4l",BYTE_REG + 9,
- "r5h",BYTE_REG + 10,
- "r5l",BYTE_REG + 11,
- "r6h",BYTE_REG + 12,
- "r6l",BYTE_REG + 13,
- "r7h",BYTE_REG + 14,
- "r7l",BYTE_REG + 15,
- "ccr",CCR_REG,
- 0,0
- }
-;
+const int md_reloc_size;
+
+const char EXP_CHARS[] = "eE";
+/* Chars that mean this number is a floating point constant
+ As in 0f12.456
+ or 0d1.2345e12. */
+const char FLT_CHARS[] = "rRsSfFdDxXpP";
-#endif
+static struct hash_control *opcode_hash_control; /* Opcode mnemonics. */
+/* This function is called once, at assembler startup time. This
+ should set up all the tables, etc. that the MD part of the assembler
+ needs. */
-void md_begin ()
+void
+md_begin ()
{
- struct h8_opcode *opcode;
- const struct reg_entry *reg;
- char prev_buffer[100];
- int idx = 0;
-
- opcode_hash_control = hash_new();
- prev_buffer[0] = 0;
-
- for (opcode = h8_opcodes; opcode->name; opcode++)
+ unsigned int nopcodes;
+ struct h8_opcode *p, *p1;
+ struct h8_instruction *pi;
+ char prev_buffer[100];
+ int idx = 0;
+
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_arch_mach (stdoutput, bfd_arch_h8300, bfd_mach_h8300))
+ as_warn (_("could not set architecture and machine"));
+#endif
+
+ opcode_hash_control = hash_new ();
+ prev_buffer[0] = 0;
+
+ nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);
+
+ h8_instructions = (struct h8_instruction *)
+ xmalloc (nopcodes * sizeof (struct h8_instruction));
+
+ pi = h8_instructions;
+ p1 = h8_opcodes;
+ /* We do a minimum amount of sorting on the opcode table; this is to
+ make it easy to describe the mova instructions without unnecessary
+ code duplication.
+ Sorting only takes place inside blocks of instructions of the form
+ X/Y, so for example mova/b, mova/w and mova/l can be intermixed. */
+ while (p1)
+ {
+ struct h8_opcode *first_skipped = 0;
+ int len, cmplen = 0;
+ char *src = p1->name;
+ char *dst, *buffer;
+
+ if (p1->name == 0)
+ break;
+ /* Strip off any . part when inserting the opcode and only enter
+ unique codes into the hash table. */
+ dst = buffer = malloc (strlen (src) + 1);
+ while (*src)
+ {
+ if (*src == '.')
{
- /* Strip off any . part when inserting the opcode and only enter
- unique codes into the hash table
- */
- char *src= opcode->name;
- unsigned int len = strlen(src);
- char *dst = malloc(len+1);
- char *buffer = dst;
- opcode->size = 0;
- while (*src) {
- if (*src == '.') {
- *dst++ = 0;
- src++;
- opcode->size = *src;
- break;
- }
- *dst++ = *src++;
- }
- if (strcmp(buffer, prev_buffer))
- {
- hash_insert(opcode_hash_control, buffer, (char *)opcode);
- strcpy(prev_buffer, buffer);
- idx++;
- }
- opcode->idx = idx;
-
-
- /* Find the number of operands */
- opcode->noperands = 0;
- while (opcode->args.nib[opcode->noperands] != E)
- opcode->noperands ++;
- /* Find the length of the opcode in bytes */
- opcode->length =0;
- while (opcode->data.nib[opcode->length*2] != E)
- opcode->length++;
+ src++;
+ break;
+ }
+ if (*src == '/')
+ cmplen = src - p1->name + 1;
+ *dst++ = *src++;
+ }
+ *dst = 0;
+ len = dst - buffer;
+ if (cmplen == 0)
+ cmplen = len;
+ hash_insert (opcode_hash_control, buffer, (char *) pi);
+ strcpy (prev_buffer, buffer);
+ idx++;
+
+ for (p = p1; p->name; p++)
+ {
+ /* A negative TIME is used to indicate that we've added this opcode
+ already. */
+ if (p->time == -1)
+ continue;
+ if (strncmp (p->name, buffer, cmplen) != 0
+ || (p->name[cmplen] != '\0' && p->name[cmplen] != '.'
+ && p->name[cmplen - 1] != '/'))
+ {
+ if (first_skipped == 0)
+ first_skipped = p;
+ break;
+ }
+ if (strncmp (p->name, buffer, len) != 0)
+ {
+ if (first_skipped == 0)
+ first_skipped = p;
+ continue;
}
-
-}
+ p->time = -1;
+ pi->size = p->name[len] == '.' ? p->name[len + 1] : 0;
+ pi->idx = idx;
-struct h8_exp {
- char *e_beg;
- char *e_end;
- expressionS e_exp;
-};
-struct h8_op
+ /* Find the number of operands. */
+ pi->noperands = 0;
+ while (pi->noperands < 3 && p->args.nib[pi->noperands] != (op_type) E)
+ pi->noperands++;
+
+ /* Find the length of the opcode in bytes. */
+ pi->length = 0;
+ while (p->data.nib[pi->length * 2] != (op_type) E)
+ pi->length++;
+
+ pi->opcode = p;
+ pi++;
+ }
+ p1 = first_skipped;
+ }
+
+ /* Add entry for the NULL vector terminator. */
+ pi->length = 0;
+ pi->noperands = 0;
+ pi->idx = 0;
+ pi->size = 0;
+ pi->opcode = 0;
+
+ linkrelax = 1;
+}
+
+struct h8_exp
{
- unsigned int dispreg;
- op_type mode;
- unsigned reg;
- expressionS exp;
+ char *e_beg;
+ char *e_end;
+ expressionS e_exp;
};
+struct h8_op
+{
+ op_type mode;
+ unsigned reg;
+ expressionS exp;
+};
+static void clever_message PARAMS ((const struct h8_instruction *, struct h8_op *));
+static void fix_operand_size PARAMS ((struct h8_op *, int));
+static void build_bytes PARAMS ((const struct h8_instruction *, struct h8_op *));
+static void do_a_fix_imm PARAMS ((int, int, struct h8_op *, int));
+static void check_operand PARAMS ((struct h8_op *, unsigned int, char *));
+static const struct h8_instruction * get_specific PARAMS ((const struct h8_instruction *, struct h8_op *, int));
+static char * get_operands PARAMS ((unsigned, char *, struct h8_op *));
+static void get_operand PARAMS ((char **, struct h8_op *, int));
+static char * skip_colonthing PARAMS ((char *, expressionS *, int *));
+static char * parse_exp PARAMS ((char *, expressionS *));
+static int parse_reg PARAMS ((char *, op_type *, unsigned *, int));
+char * colonmod24 PARAMS ((struct h8_op *, char *));
+
+static int constant_fits_width_p PARAMS ((struct h8_op *, unsigned int));
+static int constant_fits_size_p PARAMS ((struct h8_op *, int, int));
/*
- parse operands
+ parse operands
WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
r0l,r0h,..r7l,r7h
@WREG
@WREG+
@-WREG
#const
-
- */
-
-op_type r8_sord[] = {RS8, RD8};
-op_type r16_sord[] = {RS16, RD16};
-op_type rind_sord[] = {RSIND, RDIND};
-op_type abs_sord[2] = {ABS16SRC, ABS16DST};
-op_type disp_sord[] = {DISPSRC, DISPDST};
-
-/* try and parse a reg name, returns number of chars consumed */
-int
- DEFUN(parse_reg,(src, mode, reg, dst),
- char *src AND
- op_type *mode AND
- unsigned int *reg AND
- int dst)
+ ccr
+*/
+
+/* Try to parse a reg name. Return the number of chars consumed. */
+
+static int
+parse_reg (src, mode, reg, direction)
+ char *src;
+ op_type *mode;
+ unsigned int *reg;
+ int direction;
{
- if (src[0] == 's' && src[1] == 'p')
- {
- *mode = r16_sord[dst];
- *reg = 7;
- return 2;
- }
- if (src[0] == 'c' && src[1] == 'c' && src[2] == 'r')
+ char *end;
+ int len;
+
+ /* Cribbed from get_symbol_end. */
+ if (!is_name_beginner (*src) || *src == '\001')
+ return 0;
+ end = src + 1;
+ while ((is_part_of_name (*end) && *end != '.') || *end == '\001')
+ end++;
+ len = end - src;
+
+ if (len == 2 && TOLOWER (src[0]) == 's' && TOLOWER (src[1]) == 'p')
+ {
+ *mode = PSIZE | REG | direction;
+ *reg = 7;
+ return len;
+ }
+ if (len == 3 &&
+ TOLOWER (src[0]) == 'c' &&
+ TOLOWER (src[1]) == 'c' &&
+ TOLOWER (src[2]) == 'r')
+ {
+ *mode = CCR;
+ *reg = 0;
+ return len;
+ }
+ if (len == 3 &&
+ TOLOWER (src[0]) == 'e' &&
+ TOLOWER (src[1]) == 'x' &&
+ TOLOWER (src[2]) == 'r')
+ {
+ *mode = EXR;
+ *reg = 1;
+ return len;
+ }
+ if (len == 3 &&
+ TOLOWER (src[0]) == 'v' &&
+ TOLOWER (src[1]) == 'b' &&
+ TOLOWER (src[2]) == 'r')
+ {
+ *mode = VBR;
+ *reg = 6;
+ return len;
+ }
+ if (len == 3 &&
+ TOLOWER (src[0]) == 's' &&
+ TOLOWER (src[1]) == 'b' &&
+ TOLOWER (src[2]) == 'r')
+ {
+ *mode = SBR;
+ *reg = 7;
+ return len;
+ }
+ if (len == 2 && TOLOWER (src[0]) == 'f' && TOLOWER (src[1]) == 'p')
+ {
+ *mode = PSIZE | REG | direction;
+ *reg = 6;
+ return len;
+ }
+ if (len == 3 && TOLOWER (src[0]) == 'e' && TOLOWER (src[1]) == 'r' &&
+ src[2] >= '0' && src[2] <= '7')
+ {
+ *mode = L_32 | REG | direction;
+ *reg = src[2] - '0';
+ if (!Hmode)
+ as_warn (_("Reg not valid for H8/300"));
+ return len;
+ }
+ if (len == 2 && TOLOWER (src[0]) == 'e' && src[1] >= '0' && src[1] <= '7')
+ {
+ *mode = L_16 | REG | direction;
+ *reg = src[1] - '0' + 8;
+ if (!Hmode)
+ as_warn (_("Reg not valid for H8/300"));
+ return len;
+ }
+
+ if (TOLOWER (src[0]) == 'r')
+ {
+ if (src[1] >= '0' && src[1] <= '7')
+ {
+ if (len == 3 && TOLOWER (src[2]) == 'l')
{
- *mode = CCR;
- *reg = 0;
- return 3;
+ *mode = L_8 | REG | direction;
+ *reg = (src[1] - '0') + 8;
+ return len;
}
- if (src[0] == 'f' && src[1] == 'p')
+ if (len == 3 && TOLOWER (src[2]) == 'h')
{
- *mode = r16_sord[dst];
- *reg = 6;
- return 2;
+ *mode = L_8 | REG | direction;
+ *reg = (src[1] - '0');
+ return len;
}
- if (src[0] == 'r')
+ if (len == 2)
{
- if (src[1] >= '0' && src[1] <= '7')
- {
- if(src[2] == 'l')
- {
- *mode = r8_sord[dst];
- *reg = (src[1] - '0') + 8;
- return 3;
- }
- if(src[2] == 'h')
- {
- *mode = r8_sord[dst];
- *reg = (src[1] - '0') ;
- return 3;
- }
- *mode = r16_sord[dst];
- *reg = (src[1] - '0');
- return 2;
- }
+ *mode = L_16 | REG | direction;
+ *reg = (src[1] - '0');
+ return len;
}
- return 0;
+ }
+ }
+
+ return 0;
}
-char *
- DEFUN(parse_exp,(s, op),
- char *s AND
- expressionS *op)
+static char *
+parse_exp (s, op)
+ char *s;
+ expressionS *op;
{
- char *save = input_line_pointer;
- char *new;
- segT seg;
- input_line_pointer = s;
- seg = expr(0,op);
- 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;
- }
+ char *save = input_line_pointer;
+ char *new;
+
+ input_line_pointer = s;
+ expression (op);
+ if (op->X_op == O_absent)
+ as_bad (_("missing operand"));
+ new = input_line_pointer;
+ input_line_pointer = save;
+ return new;
}
static char *
- DEFUN(skip_colonthing,(ptr),
- char *ptr)
+skip_colonthing (ptr, exp, mode)
+ char *ptr;
+ expressionS *exp ATTRIBUTE_UNUSED;
+ int *mode;
{
- if (*ptr == ':') {
- ptr++;
- while (isdigit(*ptr))
- ptr++;
-
- }
- return ptr;
+ if (*ptr == ':')
+ {
+ ptr++;
+ *mode &= ~SIZE;
+ if (ptr[0] == '8' && ! ISDIGIT (ptr[1]))
+ *mode |= L_8;
+ else if (ptr[0] == '2' && ! ISDIGIT (ptr[1]))
+ *mode |= L_2;
+ else if (ptr[0] == '3' && ! ISDIGIT (ptr[1]))
+ *mode |= L_3;
+ else if (ptr[0] == '4' && ! ISDIGIT (ptr[1]))
+ *mode |= L_4;
+ else if (ptr[0] == '5' && ! ISDIGIT (ptr[1]))
+ *mode |= L_5;
+ else if (ptr[0] == '2' && ptr[1] == '4')
+ *mode |= L_24;
+ else if (ptr[0] == '3' && ptr[1] == '2')
+ *mode |= L_32;
+ else if (ptr[0] == '1' && ptr[1] == '6')
+ *mode |= L_16;
+ else
+ as_bad (_("invalid operand size requested"));
+
+ while (ISDIGIT (*ptr))
+ ptr++;
+ }
+ return ptr;
}
/* The many forms of operand:
-
+
Rn Register direct
@Rn Register indirect
@(exp[:16], Rn) Register indirect with displacement
@Rn+
@-Rn
- @aa:8 absolute 8 bit
- @aa:16 absolute 16 bit
+ @aa:8 absolute 8 bit
+ @aa:16 absolute 16 bit
@aa absolute 16 bit
-
+
#xx[:size] immediate data
- @(exp:[8], pc) pc rel
- @@aa[:8] memory indirect
-
- */
-
-static void
- DEFUN(get_operand,(ptr, op, dst),
- char **ptr AND
- struct h8_op *op AND
- unsigned int dst)
+ @(exp:[8], pc) pc rel
+ @@aa[:8] memory indirect. */
+
+char *
+colonmod24 (op, src)
+ struct h8_op *op;
+ char *src;
{
- char *src = *ptr;
- op_type mode;
- unsigned int num;
- unsigned int len;
- unsigned int size;
- op->mode = E;
-
- len = parse_reg(src, &op->mode, &op->reg, dst);
- if (len) {
- *ptr = src + len;
- return ;
- }
-
- if (*src == '@')
- {
- src++;
- if (*src == '@')
- {
- src++;
- src = parse_exp(src,&op->exp);
- src = skip_colonthing(src);
-
- *ptr = src;
-
- op->mode = MEMIND;
- return;
-
- }
-
-
- if (*src == '-')
- {
- src++;
- len = parse_reg(src, &mode, &num, dst);
- if (len == 0)
- {
- /* Oops, not a reg after all, must be ordinary exp */
- src--;
- /* must be a symbol */
- op->mode = abs_sord[dst];
- *ptr = skip_colonthing(parse_exp(src, &op->exp));
-
- return;
-
-
- }
-
- if (mode != r16_sord[dst])
- {
- as_bad("@- needs word register");
- }
- op->mode = RDDEC;
- op->reg = num;
- *ptr = src + len;
- return;
- }
- if (*src == '(' && ')')
+ int mode = 0;
+ src = skip_colonthing (src, &op->exp, &mode);
+
+ if (!mode)
{
- /* Disp */
- src++;
- src = parse_exp(src, &op->exp);
-
- if (*src == ')')
- {
- src++;
- op->mode = abs_sord[dst];
- *ptr = src;
- return;
- }
- src = skip_colonthing(src);
-
- if (*src != ',')
- {
- as_bad("expected @(exp, reg16)");
- return;
-
- }
- src++;
- len = parse_reg(src, &mode, &op->reg, dst);
- if (len == 0 || mode != r16_sord[dst])
- {
- as_bad("expected @(exp, reg16)");
- return;
- }
- op->mode = disp_sord[dst];
- src += len;
- src = skip_colonthing(src);
-
- if (*src != ')' && '(')
- {
- as_bad("expected @(exp, reg16)");
- return;
- }
- *ptr = src +1;
-
- return;
- }
- len = parse_reg(src, &mode, &num, dst);
-
- if(len) {
- src += len;
- if (*src == '+')
- {
- src++;
- if (mode != RS16)
- {
- as_bad("@Rn+ needs src word register");
- return;
- }
- op->mode = RSINC;
- op->reg = num;
- *ptr = src;
- return;
- }
- if (mode != r16_sord[dst])
+ /* If the operand is a 16-bit constant integer, leave fix_operand_size
+ to calculate its size. Otherwise choose a default here. */
+ if (op->exp.X_add_number < -32768
+ || op->exp.X_add_number > 32767)
{
- as_bad("@Rn needs word register");
- return;
-
+ if (Hmode)
+ mode = L_24;
+ else
+ mode = L_16;
}
- op->mode =rind_sord[dst];
- op->reg = num;
- *ptr = src;
-
- return;
- }
- else
- {
- /* must be a symbol */
- op->mode = abs_sord[dst];
- *ptr = skip_colonthing(parse_exp(src, &op->exp));
-
- return;
- }
- }
-
-
- if (*src == '#') {
- src++;
- op->mode = IMM16;
- src = parse_exp(src, &op->exp);
- *ptr= skip_colonthing(src);
-
- return;
- }
- else {
- *ptr = parse_exp(src, &op->exp);
- op->mode = DISP8;
+ else if (op->exp.X_add_symbol
+ || op->exp.X_op_symbol)
+ mode = DSYMMODE;
}
-}
+ op->mode |= mode;
+ return src;
+}
-static
- char *
- DEFUN(get_operands,(noperands,op_end, operand),
- unsigned int noperands AND
- char *op_end AND
- struct h8_op *operand)
+static int
+constant_fits_width_p (operand, width)
+ struct h8_op *operand;
+ unsigned int width;
{
- char *ptr = op_end;
- switch (noperands)
- {
- case 0:
- operand[0].mode = 0;
- operand[1].mode = 0;
- break;
-
- case 1:
- ptr++;
- get_operand(& ptr, operand +0,0);
- operand[1].mode =0;
- break;
-
- case 2:
- ptr++;
- get_operand(& ptr, operand +0,0);
- if (*ptr == ',') ptr++;
- get_operand(& ptr, operand +1, 1);
- break;
-
- default:
- abort();
- }
-
-
- return ptr;
+ return ((operand->exp.X_add_number & ~width) == 0
+ || (operand->exp.X_add_number | width) == (unsigned)(~0));
}
-/* Passed a pointer to a list of opcodes which use different
- addressing modes, return the opcode which matches the opcodes
- provided
- */
-static
- struct h8_opcode *
- DEFUN(get_specific,(opcode, operands),
- struct h8_opcode *opcode AND
- struct h8_op *operands)
-
+static int
+constant_fits_size_p (operand, size, no_symbols)
+ struct h8_op *operand;
+ int size, no_symbols;
{
- struct h8_opcode *this_try = opcode ;
- int found = 0;
- unsigned int noperands = opcode->noperands;
-
- unsigned int dispreg;
- unsigned int this_index = opcode->idx;
- while (this_index == opcode->idx && !found)
- {
- unsigned int i;
-
- this_try = opcode ++;
- for (i = 0; i < noperands; i++)
- {
- op_type op = (this_try->args.nib[i]) & ~(B30|B31);
- switch (op)
- {
- case Hex0:
- case Hex1:
- case Hex2:
- case Hex3:
- case Hex4:
- case Hex5:
- case Hex6:
- case Hex7:
- case Hex8:
- case Hex9:
- case HexA:
- case HexB:
- case HexC:
- case HexD:
- case HexE:
- case HexF:
- break;
- case DISPSRC:
- case DISPDST:
- operands[0].dispreg = operands[i].reg;
- case RD8:
- case RS8:
- case RDIND:
- case RSIND:
- case RD16:
- case RS16:
- case CCR:
- case RSINC:
- case RDDEC:
- if (operands[i].mode != op) goto fail;
- break;
- case KBIT:
- case IMM16:
- case IMM3:
- case IMM8:
- if (operands[i].mode != IMM16) goto fail;
- break;
- case MEMIND:
- if (operands[i].mode != MEMIND) goto fail;
- break;
- case ABS16SRC:
- case ABS8SRC:
- case ABS16OR8SRC:
- case ABS16ORREL8SRC:
-
- if (operands[i].mode != ABS16SRC) goto fail;
- break;
- case ABS16OR8DST:
- case ABS16DST:
- case ABS8DST:
- if (operands[i].mode != ABS16DST) goto fail;
- break;
- }
- }
- found =1;
- fail: ;
- }
- if (found)
- return this_try;
- else
- return 0;
+ offsetT num = operand->exp.X_add_number;
+ if (no_symbols
+ && (operand->exp.X_add_symbol != 0 || operand->exp.X_op_symbol != 0))
+ return 0;
+ switch (size)
+ {
+ case L_2:
+ return (num & ~3) == 0;
+ case L_3:
+ return (num & ~7) == 0;
+ case L_3NZ:
+ return num >= 1 && num < 8;
+ case L_4:
+ return (num & ~15) == 0;
+ case L_5:
+ return num >= 1 && num < 32;
+ case L_8:
+ return (num & ~0xFF) == 0 || ((unsigned)num | 0x7F) == ~0u;
+ case L_8U:
+ return (num & ~0xFF) == 0;
+ case L_16:
+ return (num & ~0xFFFF) == 0 || ((unsigned)num | 0x7FFF) == ~0u;
+ case L_16U:
+ return (num & ~0xFFFF) == 0;
+ case L_32:
+ return 1;
+ default:
+ abort ();
+ }
}
static void
- DEFUN(check_operand,(operand, width, string),
- struct h8_op *operand AND
- unsigned int width AND
- char *string)
+get_operand (ptr, op, direction)
+ char **ptr;
+ struct h8_op *op;
+ int direction;
{
- 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))
+ char *src = *ptr;
+ op_type mode;
+ unsigned int num;
+ unsigned int len;
+
+ op->mode = 0;
+
+ /* Check for '(' and ')' for instructions ldm and stm. */
+ if (src[0] == '(' && src[8] == ')')
+ ++ src;
+
+ /* Gross. Gross. ldm and stm have a format not easily handled
+ by get_operand. We deal with it explicitly here. */
+ if (TOLOWER (src[0]) == 'e' && TOLOWER (src[1]) == 'r' &&
+ ISDIGIT (src[2]) && src[3] == '-' &&
+ TOLOWER (src[4]) == 'e' && TOLOWER (src[5]) == 'r' && ISDIGIT (src[6]))
{
- as_warn("operand %s0x%x out of range.", string, operand->exp.X_add_number);
+ int low, high;
+
+ low = src[2] - '0';
+ high = src[6] - '0';
+
+ if (high == low)
+ as_bad (_("Invalid register list for ldm/stm\n"));
+
+ if (high < low)
+ as_bad (_("Invalid register list for ldm/stm\n"));
+
+ if (high - low > 3)
+ as_bad (_("Invalid register list for ldm/stm)\n"));
+
+ /* Even sicker. We encode two registers into op->reg. One
+ for the low register to save, the other for the high
+ register to save; we also set the high bit in op->reg
+ so we know this is "very special". */
+ op->reg = 0x80000000 | (high << 8) | low;
+ op->mode = REG;
+ if (src[7] == ')')
+ *ptr = src + 8;
+ else
+ *ptr = src + 7;
+ return;
}
- }
-
-}
-
-/* Now we know what sort of opcodes it is, lets build the bytes -
- */
-static void
- DEFUN (build_bytes,(this_try, operand),
- struct h8_opcode *this_try AND
- struct h8_op *operand)
-{
- unsigned int i;
-
- char *output = frag_more(this_try->length);
- char *output_ptr = output;
- op_type *nibble_ptr = this_try->data.nib;
- char part;
- op_type c;
- char high;
- int nib;
- top: ;
- while (*nibble_ptr != E)
- {
- int nibble;
- for (nibble = 0; nibble <2; nibble++)
- {
- c = *nibble_ptr & ~(B30|B31);
- switch (c)
- {
- default:
- abort();
- case KBIT:
- switch (operand[0].exp.X_add_number)
- {
- case 1:
- nib = 0;
- break;
- case 2:
- nib = 8;
- break;
- default:
- as_bad("Need #1 or #2 here");
- break;
- }
- /* stop it making a fix */
- operand[0].mode = 0;
- break;
- case 0:
- case 1:
- case 2: case 3: case 4: case 5: case 6:
- case 7: case 8: case 9: case 10: case 11:
- case 12: case 13: case 14: case 15:
- nib = c;
- break;
- case DISPREG:
- nib = operand[0].dispreg;
- break;
- case IMM8:
- operand[0].mode = IMM8;
- nib = 0;
- break;
-
- case DISPDST:
- nib = 0;
- break;
- case IMM3:
- if (operand[0].exp.X_add_symbol == 0) {
- operand[0].mode = 0; /* stop it making a fix */
- nib = (operand[0].exp.X_add_number);
- }
- else as_bad("can't have symbol for bit number");
- if (nib < 0 || nib > 7)
- {
- as_bad("Bit number out of range %d", nib);
- }
-
- break;
-
- case ABS16DST:
- nib = 0;
- break;
- case ABS8DST:
- operand[1].mode = ABS8DST;
- nib = 0;
- break;
- case ABS8SRC:
- operand[0].mode = ABS8SRC;
- nib = 0;
- break;
- case ABS16OR8DST:
- operand[1].mode = c;
-
- nib = 0;
-
- break;
-
- case ABS16ORREL8SRC:
- operand[0].mode = c;
- nib=0;
- break;
-
- case ABS16OR8SRC:
- operand[0].mode = ABS16OR8SRC;
- nib = 0;
- break;
- case DISPSRC:
- operand[0].mode = ABS16SRC;
- nib = 0;
- break;
-
- case DISP8:
- operand[0].mode = DISP8;
- nib = 0;
- break;
-
- case ABS16SRC:
- case IMM16:
- case IGNORE:
- case MEMIND:
-
- nib=0;
- break;
- case RS8:
- case RS16:
- case RSIND:
- case RSINC:
- nib = operand[0].reg;
- break;
-
- case RD8:
- case RD16:
- case RDDEC:
- case RDIND:
- nib = operand[1].reg;
- break;
-
- case E:
- abort();
- break;
- }
- if (*nibble_ptr & B31) {
- nib |=0x8;
- }
-
- if (nibble == 0) {
- *output_ptr = nib << 4;
- }
- else {
- *output_ptr |= nib;
- output_ptr++;
- }
- nibble_ptr++;
- }
-
- }
-
- /* output any fixes */
- for (i = 0; i < 2; i++)
+ len = parse_reg (src, &op->mode, &op->reg, direction);
+ if (len)
+ {
+ src += len;
+ if (*src == '.')
+ {
+ int size = op->mode & SIZE;
+ switch (src[1])
{
- switch (operand[i].mode) {
- case 0:
- break;
-
- case DISP8:
- check_operand(operand+i, 0x7f,"@");
-
- if (operand[i].exp.X_add_number & 1) {
- as_warn("branch operand has odd offset (%x)\n",
- operand->exp.X_add_number);
- }
-
- fix_new(frag_now,
- output - frag_now->fr_literal + 1,
- 1,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number -1,
- 1,
- R_PCRBYTE);
- break;
- case IMM8:
- check_operand(operand+i, 0xff,"#");
- /* If there is nothing else going on we can safely
- reloc in place */
- if (operand[i].exp.X_add_symbol == 0)
- {
- output[1] = operand[i].exp.X_add_number;
- }
- else
- {
- fix_new(frag_now,
- output - frag_now->fr_literal + 1,
- 1,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number,
- 0,
- R_RELBYTE);
- }
-
- break;
- case MEMIND:
- check_operand(operand+i, 0xff,"@@");
- fix_new(frag_now,
- output - frag_now->fr_literal + 1,
- 1,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number,
- 0,
- R_RELBYTE);
- break;
- case ABS8DST:
- case ABS8SRC:
- check_operand(operand+i, 0xff,"@");
- fix_new(frag_now,
- output - frag_now->fr_literal + 1,
- 1,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number,
- 0,
- R_RELBYTE);
- break;
-
- case ABS16OR8SRC:
- case ABS16OR8DST:
- check_operand(operand+i, 0xffff,"@");
-
- fix_new(frag_now,
- output - frag_now->fr_literal + 2,
- 2,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number,
- 0,
- R_MOVB1);
- break;
-
- case ABS16ORREL8SRC:
- check_operand(operand+i, 0xffff,"@");
- if (operand[i].exp.X_add_number & 1) {
- as_warn("branch operand has odd offset (%x)\n",
- operand->exp.X_add_number);
- }
- fix_new(frag_now,
- output - frag_now->fr_literal + 2,
- 2,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number,
- 0,
- R_JMP1);
- break;
-
-
- case ABS16SRC:
- case ABS16DST:
- case IMM16:
- case DISPSRC:
- case DISPDST:
- check_operand(operand+i, 0xffff,"@");
- if (operand[i].exp.X_add_symbol == 0)
- {
- /* This should be done with bfd */
- output[3] = operand[i].exp.X_add_number & 0xff;
- output[2] = operand[i].exp.X_add_number >> 8;
-
- }
- else
- {
-
- fix_new(frag_now,
- output - frag_now->fr_literal + 2,
- 2,
- operand[i].exp.X_add_symbol,
- operand[i].exp.X_subtract_symbol,
- operand[i].exp.X_add_number,
- 0,
- R_RELWORD);
- }
-
- break;
- case RS8:
- case RD8:
- case RS16:
- case RD16:
- case RDDEC:
- case KBIT:
- case RSINC:
- case RDIND:
- case RSIND:
- case CCR:
-
- break;
- default:
- abort();
- }
+ case 'l': case 'L':
+ if (size != L_32)
+ as_warn (_("mismatch between register and suffix"));
+ op->mode = (op->mode & ~MODE) | LOWREG;
+ break;
+ case 'w': case 'W':
+ if (size != L_32 && size != L_16)
+ as_warn (_("mismatch between register and suffix"));
+ op->mode = (op->mode & ~MODE) | LOWREG;
+ op->mode = (op->mode & ~SIZE) | L_16;
+ break;
+ case 'b': case 'B':
+ op->mode = (op->mode & ~MODE) | LOWREG;
+ if (size != L_32 && size != L_8)
+ as_warn (_("mismatch between register and suffix"));
+ op->mode = (op->mode & ~MODE) | LOWREG;
+ op->mode = (op->mode & ~SIZE) | L_8;
+ break;
+ default:
+ as_warn ("invalid suffix after register.");
+ break;
}
-
-}
-/*
- try and give an intelligent error message for common and simple to
- detect errors
- */
+ src += 2;
+ }
+ *ptr = src;
+ return;
+ }
-static void
- DEFUN(clever_message, (opcode, operand),
- struct h8_opcode *opcode AND
- struct h8_op *operand)
-{
- struct h8_opcode *scan = opcode;
-
- /* Find out if there was more than one possible opccode */
-
- if ((opcode+1)->idx != opcode->idx)
- {
- unsigned int argn;
-
- /* Only one opcode of this flavour, try and guess which operand
- didn't match */
- for (argn = 0; argn < opcode->noperands; argn++)
+ if (*src == '@')
{
- switch (opcode->args.nib[argn])
- {
- case RD16:
- if (operand[argn].mode != RD16)
- {
- as_bad("destination operand must be 16 bit register");
- return;
-
- }
- break;
-
- case RS8:
-
- if (operand[argn].mode != RS8)
+ src++;
+ if (*src == '@')
{
- as_bad("source operand must be 8 bit register");
+ src++;
+ src = parse_exp (src, &op->exp);
+
+ src = skip_colonthing (src, &op->exp, &op->mode);
+
+ *ptr = src;
+
+ if (op->exp.X_add_number >= 0x100)
+ {
+ int divisor;
+
+ op->mode = VECIND;
+ /* FIXME : 2? or 4? */
+ if (op->exp.X_add_number >= 0x400)
+ as_bad (_("address too high for vector table jmp/jsr"));
+ else if (op->exp.X_add_number >= 0x200)
+ divisor = 4;
+ else
+ divisor = 2;
+
+ op->exp.X_add_number = op->exp.X_add_number / divisor - 0x80;
+ }
+ else
+ op->mode = MEMIND;
+
return;
}
- break;
-
- case ABS16DST:
- if (operand[argn].mode != ABS16DST)
+
+ if (*src == '-' || *src == '+')
{
- as_bad("destination operand must be 16bit absolute address");
+ char c = *src;
+ src++;
+ len = parse_reg (src, &mode, &num, direction);
+ if (len == 0)
+ {
+ /* Oops, not a reg after all, must be ordinary exp. */
+ src--;
+ /* Must be a symbol. */
+ op->mode = ABS | PSIZE | direction;
+ *ptr = skip_colonthing (parse_exp (src, &op->exp),
+ &op->exp, &op->mode);
+
+ return;
+ }
+
+ if ((mode & SIZE) != PSIZE)
+ as_bad (_("Wrong size pointer register for architecture."));
+ op->mode = c == '-' ? RDPREDEC : RDPREINC;
+ op->reg = num;
+ *ptr = src + len;
return;
}
-break;
- case RD8:
- if (operand[argn].mode != RD8)
+ if (*src == '(')
{
- as_bad("destination operand must be 8 bit register");
- return;
- }
- break;
-
-
- case ABS16SRC:
- if (operand[argn].mode != ABS16SRC)
- {
- as_bad("source operand must be 16bit absolute address");
- return;
- }
- break;
-
- }
- }
- }
- as_bad("invalid operands");
-}
+ src++;
+
+ /* See if this is @(ERn.x, PC). */
+ len = parse_reg (src, &mode, &op->reg, direction);
+ if (len != 0 && (mode & MODE) == REG && src[len] == '.')
+ {
+ switch (TOLOWER (src[len + 1]))
+ {
+ case 'b':
+ mode = PCIDXB | direction;
+ break;
+ case 'w':
+ mode = PCIDXW | direction;
+ break;
+ case 'l':
+ mode = PCIDXL | direction;
+ break;
+ default:
+ mode = 0;
+ break;
+ }
+ if (mode
+ && src[len + 2] == ','
+ && TOLOWER (src[len + 3]) != 'p'
+ && TOLOWER (src[len + 4]) != 'c'
+ && src[len + 5] != ')')
+ {
+ *ptr = src + len + 6;
+ op->mode |= mode;
+ return;
+ }
+ /* Fall through into disp case - the grammar is somewhat
+ ambiguous, so we should try whether it's a DISP operand
+ after all ("ER3.L" might be a poorly named label...). */
+ }
-/* 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.
- */
+ /* Disp. */
+ /* Start off assuming a 16 bit offset. */
+ src = parse_exp (src, &op->exp);
-void
- DEFUN(md_assemble,(str),
- char *str)
-{
- char *op_start;
- char *op_end;
- unsigned int i;
- struct h8_op operand[2];
- struct h8_opcode * opcode;
- struct h8_opcode * prev_opcode;
-
- char *dot = 0;
- char c;
- /* Drop leading whitespace */
- while (*str == ' ')
- str++;
-
- /* find the op code end */
- for (op_start = op_end = str;
- *op_end != 0 && *op_end != ' ';
- op_end ++)
+ src = colonmod24 (op, src);
+
+ if (*src == ')')
{
- if (*op_end == '.') {
- dot = op_end+1;
- *op_end = 0;
- op_end+=2;
- break;
- }
+ src++;
+ op->mode |= ABS | direction;
+ *ptr = src;
+ return;
}
-
- ;
-
- if (op_end == op_start)
+
+ if (*src != ',')
{
- as_bad("can't find opcode ");
+ as_bad (_("expected @(exp, reg16)"));
+ return;
+
}
- c = *op_end;
-
- *op_end = 0;
-
- opcode = (struct h8_opcode *) hash_find(opcode_hash_control,
- op_start);
-
- if (opcode == NULL)
+ src++;
+
+ len = parse_reg (src, &mode, &op->reg, direction);
+ if (len == 0 || (mode & MODE) != REG)
{
- as_bad("unknown opcode");
- return;
+ as_bad (_("expected @(exp, reg16)"));
+ return;
}
-
-
- input_line_pointer = get_operands(opcode->noperands, op_end,
- operand);
- *op_end = c;
- prev_opcode = opcode;
-
- opcode = get_specific(opcode, operand);
-
- if (opcode == 0)
+ src += len;
+ if (src[0] == '.')
{
- /* Couldn't find an opcode which matched the operands */
- char *where =frag_more(2);
- where[0] = 0x0;
- where[1] = 0x0;
- clever_message(prev_opcode, operand);
-
- return;
+ switch (TOLOWER (src[1]))
+ {
+ case 'b':
+ op->mode |= INDEXB | direction;
+ break;
+ case 'w':
+ op->mode |= INDEXW | direction;
+ break;
+ case 'l':
+ op->mode |= INDEXL | direction;
+ break;
+ default:
+ as_bad (_("expected .L, .W or .B for register in indexed addressing mode"));
+ }
+ src += 2;
+ op->reg &= 7;
}
- if (opcode->size && dot)
+ else
+ op->mode |= DISP | direction;
+ src = skip_colonthing (src, &op->exp, &op->mode);
+
+ if (*src != ')' && '(')
{
- if (opcode->size != *dot)
- {
- as_warn("mismatch between opcode size and operand size");
- }
+ as_bad (_("expected @(exp, reg16)"));
+ return;
}
-
- build_bytes(opcode, operand);
-
-}
+ *ptr = src + 1;
-void
- DEFUN(tc_crawl_symbol_chain, (headers),
- object_headers *headers)
-{
- printf("call to tc_crawl_symbol_chain \n");
-}
+ return;
+ }
+ len = parse_reg (src, &mode, &num, direction);
-symbolS *DEFUN(md_undefined_symbol,(name),
- char *name)
-{
- return 0;
-}
+ if (len)
+ {
+ src += len;
+ if (*src == '+' || *src == '-')
+ {
+ if ((mode & SIZE) != PSIZE)
+ as_bad (_("Wrong size pointer register for architecture."));
+ op->mode = *src == '+' ? RSPOSTINC : RSPOSTDEC;
+ op->reg = num;
+ src++;
+ *ptr = src;
+ return;
+ }
+ if ((mode & SIZE) != PSIZE)
+ as_bad (_("Wrong size pointer register for architecture."));
+
+ op->mode = direction | IND | PSIZE;
+ op->reg = num;
+ *ptr = src;
+
+ return;
+ }
+ else
+ {
+ /* must be a symbol */
+
+ op->mode = ABS | direction;
+ src = parse_exp (src, &op->exp);
+
+ *ptr = colonmod24 (op, src);
+
+ return;
+ }
+ }
+
+ if (*src == '#')
+ {
+ src++;
+ op->mode = IMM;
+ src = parse_exp (src, &op->exp);
+ *ptr = skip_colonthing (src, &op->exp, &op->mode);
+
+ return;
+ }
+ else if (strncmp (src, "mach", 4) == 0 ||
+ strncmp (src, "macl", 4) == 0 ||
+ strncmp (src, "MACH", 4) == 0 ||
+ strncmp (src, "MACL", 4) == 0)
+ {
+ op->reg = TOLOWER (src[3]) == 'l';
+ op->mode = MACREG;
+ *ptr = src + 4;
+ return;
+ }
+ else
+ {
+ src = parse_exp (src, &op->exp);
+ /* Trailing ':' size ? */
+ if (*src == ':')
+ {
+ if (src[1] == '1' && src[2] == '6')
+ {
+ op->mode = PCREL | L_16;
+ src += 3;
+ }
+ else if (src[1] == '8')
+ {
+ op->mode = PCREL | L_8;
+ src += 2;
+ }
+ else
+ as_bad (_("expect :8 or :16 here"));
+ }
+ else
+ {
+ int val = op->exp.X_add_number;
+
+ op->mode = PCREL;
+ if (-128 < val && val < 127)
+ op->mode |= L_8;
+ else
+ op->mode |= L_16;
+ }
-void
- DEFUN(tc_headers_hook,(headers),
- object_headers *headers)
+ *ptr = src;
+ }
+}
+
+static char *
+get_operands (noperands, op_end, operand)
+ unsigned int noperands;
+ char *op_end;
+ struct h8_op *operand;
{
- printf("call to tc_headers_hook \n");
+ char *ptr = op_end;
+
+ switch (noperands)
+ {
+ case 0:
+ break;
+
+ case 1:
+ ptr++;
+ get_operand (&ptr, operand + 0, SRC);
+ if (*ptr == ',')
+ {
+ ptr++;
+ get_operand (&ptr, operand + 1, DST);
+ }
+ break;
+
+ case 2:
+ ptr++;
+ get_operand (&ptr, operand + 0, SRC);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, DST);
+ break;
+
+ case 3:
+ ptr++;
+ get_operand (&ptr, operand + 0, SRC);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, DST);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 2, OP3);
+ break;
+
+ default:
+ abort ();
+ }
+
+ return ptr;
}
-void
- DEFUN_VOID(md_end)
+
+/* MOVA has special requirements. Rather than adding twice the amount of
+ addressing modes, we simply special case it a bit. */
+static void
+get_mova_operands (char *op_end, struct h8_op *operand)
{
+ char *ptr = op_end;
+
+ if (ptr[1] != '@' || ptr[2] != '(')
+ goto error;
+ ptr += 3;
+ operand[0].mode = 0;
+ ptr = parse_exp (ptr, &operand[0].exp);
+ ptr = colonmod24 (operand + 0, ptr);
+
+ if (*ptr !=',')
+ goto error;
+ ptr++;
+ get_operand (&ptr, operand + 1, DST);
+
+ if (*ptr =='.')
+ {
+ ptr++;
+ switch (*ptr++)
+ {
+ case 'b': case 'B':
+ operand[0].mode = (operand[0].mode & ~MODE) | INDEXB;
+ break;
+ case 'w': case 'W':
+ operand[0].mode = (operand[0].mode & ~MODE) | INDEXW;
+ break;
+ case 'l': case 'L':
+ operand[0].mode = (operand[0].mode & ~MODE) | INDEXL;
+ break;
+ default:
+ goto error;
+ }
+ }
+ else if ((operand[1].mode & MODE) == LOWREG)
+ {
+ switch (operand[1].mode & SIZE)
+ {
+ case L_8:
+ operand[0].mode = (operand[0].mode & ~MODE) | INDEXB;
+ break;
+ case L_16:
+ operand[0].mode = (operand[0].mode & ~MODE) | INDEXW;
+ break;
+ case L_32:
+ operand[0].mode = (operand[0].mode & ~MODE) | INDEXL;
+ break;
+ default:
+ goto error;
+ }
+ }
+ else
+ goto error;
+
+ if (*ptr++ != ')' || *ptr++ != ',')
+ goto error;
+ get_operand (&ptr, operand + 2, OP3);
+ /* See if we can use the short form of MOVA. */
+ if (((operand[1].mode & MODE) == REG || (operand[1].mode & MODE) == LOWREG)
+ && (operand[2].mode & MODE) == REG
+ && (operand[1].reg & 7) == (operand[2].reg & 7))
+ {
+ operand[1].mode = operand[2].mode = 0;
+ operand[0].reg = operand[2].reg & 7;
+ }
+ return;
+
+ error:
+ as_bad (_("expected valid addressing mode for mova: \"@(disp, ea.sz),ERn\""));
+ return;
}
-/* Various routines to kill one day */
-/* Equal to MAX_PRECISION in atof-ieee.c */
-#define MAX_LITTLENUMS 6
+static void
+get_rtsl_operands (char *ptr, struct h8_op *operand)
+{
+ int mode, num, num2, len, type = 0;
-/* 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;
+ ptr++;
+ if (*ptr == '(')
+ {
+ ptr++;
+ type = 1;
+ }
+ len = parse_reg (ptr, &mode, &num, SRC);
+ if (len == 0 || (mode & MODE) != REG)
+ {
+ as_bad (_("expected register"));
+ return;
+ }
+ if (type == 1)
+ {
+ ptr += len;
+ if (*ptr++ != '-')
+ {
+ as_bad (_("expected register list"));
+ return;
+ }
+ len = parse_reg (ptr, &mode, &num2, SRC);
+ if (len == 0 || (mode & MODE) != REG)
+ {
+ as_bad (_("expected register"));
+ return;
+ }
+ ptr += len;
+ if (*ptr++ != ')')
+ {
+ as_bad (_("expected closing paren"));
+ return;
+ }
+ /* CONST_xxx are used as placeholders in the opcode table. */
+ num = num2 - num;
+ if (num < 1 || num > 3)
+ {
+ as_bad (_("invalid register list"));
+ return;
+ }
+ }
+ else
+ num2 = num, num = 0;
+ operand[0].mode = RS32;
+ operand[1].mode = RD32;
+ operand[0].reg = num;
+ operand[1].reg = num2;
+}
+
+/* Passed a pointer to a list of opcodes which use different
+ addressing modes, return the opcode which matches the opcodes
+ provided. */
+
+static const struct h8_instruction *
+get_specific (instruction, operands, size)
+ const struct h8_instruction *instruction;
+ struct h8_op *operands;
+ int size;
+{
+ const struct h8_instruction *this_try = instruction;
+ const struct h8_instruction *found_other = 0, *found_mismatched = 0;
+ int found = 0;
+ int this_index = instruction->idx;
+ int noperands = 0;
+
+ /* There's only one ldm/stm and it's easier to just
+ get out quick for them. */
+ if (OP_KIND (instruction->opcode->how) == O_LDM
+ || OP_KIND (instruction->opcode->how) == O_STM)
+ return this_try;
+
+ while (noperands < 3 && operands[noperands].mode != 0)
+ noperands++;
+
+ while (this_index == instruction->idx && !found)
+ {
+ int this_size;
+
+ found = 1;
+ this_try = instruction++;
+ this_size = this_try->opcode->how & SN;
+
+ if (this_try->noperands != noperands)
+ found = 0;
+ else if (this_try->noperands > 0)
+ {
+ int i;
+
+ for (i = 0; i < this_try->noperands && found; i++)
+ {
+ op_type op = this_try->opcode->args.nib[i];
+ int op_mode = op & MODE;
+ int op_size = op & SIZE;
+ int x = operands[i].mode;
+ int x_mode = x & MODE;
+ int x_size = x & SIZE;
+
+ if (op_mode == LOWREG && (x_mode == REG || x_mode == LOWREG))
+ {
+ if ((x_size == L_8 && (operands[i].reg & 8) == 0)
+ || (x_size == L_16 && (operands[i].reg & 8) == 8))
+ as_warn (_("can't use high part of register in operand %d"), i);
+
+ if (x_size != op_size)
+ found = 0;
+ }
+ else if (op_mode == REG)
+ {
+ if (x_mode == LOWREG)
+ x_mode = REG;
+ if (x_mode != REG)
+ found = 0;
+
+ if (x_size == L_P)
+ x_size = (Hmode ? L_32 : L_16);
+ if (op_size == L_P)
+ op_size = (Hmode ? L_32 : L_16);
+
+ /* The size of the reg is v important. */
+ if (op_size != x_size)
+ found = 0;
+ }
+ else if (op_mode & CTRL) /* control register */
+ {
+ if (!(x_mode & CTRL))
+ found = 0;
+
+ switch (x_mode)
+ {
+ case CCR:
+ if (op_mode != CCR &&
+ op_mode != CCR_EXR &&
+ op_mode != CC_EX_VB_SB)
+ found = 0;
+ break;
+ case EXR:
+ if (op_mode != EXR &&
+ op_mode != CCR_EXR &&
+ op_mode != CC_EX_VB_SB)
+ found = 0;
+ break;
+ case MACH:
+ if (op_mode != MACH &&
+ op_mode != MACREG)
+ found = 0;
+ break;
+ case MACL:
+ if (op_mode != MACL &&
+ op_mode != MACREG)
+ found = 0;
+ break;
+ case VBR:
+ if (op_mode != VBR &&
+ op_mode != VBR_SBR &&
+ op_mode != CC_EX_VB_SB)
+ found = 0;
+ break;
+ case SBR:
+ if (op_mode != SBR &&
+ op_mode != VBR_SBR &&
+ op_mode != CC_EX_VB_SB)
+ found = 0;
+ break;
+ }
+ }
+ else if ((op & ABSJMP) && (x_mode == ABS || x_mode == PCREL))
+ {
+ operands[i].mode &= ~MODE;
+ operands[i].mode |= ABSJMP;
+ /* But it may not be 24 bits long. */
+ if (x_mode == ABS && !Hmode)
+ {
+ operands[i].mode &= ~SIZE;
+ operands[i].mode |= L_16;
+ }
+ if ((operands[i].mode & SIZE) == L_32
+ && (op_mode & SIZE) != L_32)
+ found = 0;
+ }
+ else if (x_mode == IMM && op_mode != IMM)
+ {
+ offsetT num = operands[i].exp.X_add_number;
+ if (op_mode == KBIT || op_mode == DBIT)
+ /* This is ok if the immediate value is sensible. */;
+ else if (op_mode == CONST_2)
+ found = num == 2;
+ else if (op_mode == CONST_4)
+ found = num == 4;
+ else if (op_mode == CONST_8)
+ found = num == 8;
+ else if (op_mode == CONST_16)
+ found = num == 16;
+ else
+ found = 0;
+ }
+ else if (op_mode == PCREL && op_mode == x_mode)
+ {
+ /* movsd only comes in PCREL16 flavour:
+ If x_size is L_8, promote it. */
+ if (OP_KIND (this_try->opcode->how) == O_MOVSD)
+ if (x_size == L_8)
+ x_size = L_16;
+
+ /* The size of the displacement is important. */
+ if (op_size != x_size)
+ found = 0;
+ }
+ else if ((op_mode == DISP || op_mode == IMM || op_mode == ABS
+ || op_mode == INDEXB || op_mode == INDEXW
+ || op_mode == INDEXL)
+ && op_mode == x_mode)
+ {
+ /* Promote a L_24 to L_32 if it makes us match. */
+ if (x_size == L_24 && op_size == L_32)
+ {
+ x &= ~SIZE;
+ x |= x_size = L_32;
+ }
+
+#if 0 /* ??? */
+ /* Promote an L8 to L_16 if it makes us match. */
+ if ((op_mode == ABS || op_mode == DISP) && x_size == L_8)
+ {
+ if (op_size == L_16)
+ x_size = L_16;
+ }
+#endif
+
+ if (((x_size == L_16 && op_size == L_16U)
+ || (x_size == L_3 && op_size == L_3NZ))
+ /* We're deliberately more permissive for ABS modes. */
+ && (op_mode == ABS
+ || constant_fits_size_p (operands + i, op_size,
+ op & NO_SYMBOLS)))
+ x_size = op_size;
+
+ if (x_size != 0 && op_size != x_size)
+ found = 0;
+ else if (x_size == 0
+ && ! constant_fits_size_p (operands + i, op_size,
+ op & NO_SYMBOLS))
+ found = 0;
+ }
+ else if (op_mode != x_mode)
+ {
+ found = 0;
+ }
+ }
+ }
+ if (found)
+ {
+ if ((this_try->opcode->available == AV_H8SX && ! SXmode)
+ || (this_try->opcode->available == AV_H8S && ! Smode)
+ || (this_try->opcode->available == AV_H8H && ! Hmode))
+ found = 0, found_other = this_try;
+ else if (this_size != size && (this_size != SN && size != SN))
+ found_mismatched = this_try, found = 0;
+
+ }
+ }
+ if (found)
+ return this_try;
+ if (found_other)
+ {
+ as_warn (_("Opcode `%s' with these operand types not available in %s mode"),
+ found_other->opcode->name,
+ (! Hmode && ! Smode ? "H8/300"
+ : SXmode ? "H8sx"
+ : Smode ? "H8/300S"
+ : "H8/300H"));
+ }
+ else if (found_mismatched)
+ {
+ as_warn (_("mismatch between opcode size and operand size"));
+ return found_mismatched;
+ }
+ return 0;
+}
+
+static void
+check_operand (operand, width, string)
+ struct h8_op *operand;
+ unsigned int width;
+ char *string;
{
- 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;
-
+ if (operand->exp.X_add_symbol == 0
+ && operand->exp.X_op_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 (! constant_fits_width_p (operand, width))
+ {
+ if (width == 255
+ && (operand->exp.X_add_number & 0xff00) == 0xff00)
+ {
+ /* Just ignore this one - which happens when trying to
+ fit a 16 bit address truncated into an 8 bit address
+ of something like bset. */
+ }
+ else if (strcmp (string, "@") == 0
+ && width == 0xffff
+ && (operand->exp.X_add_number & 0xff8000) == 0xff8000)
+ {
+ /* Just ignore this one - which happens when trying to
+ fit a 24 bit address truncated into a 16 bit address
+ of something like mov.w. */
+ }
+ else
+ {
+ as_warn (_("operand %s0x%lx out of range."), string,
+ (unsigned long) operand->exp.X_add_number);
+ }
+ }
+ }
+}
+
+/* RELAXMODE has one of 3 values:
+
+ 0 Output a "normal" reloc, no relaxing possible for this insn/reloc
+
+ 1 Output a relaxable 24bit absolute mov.w address relocation
+ (may relax into a 16bit absolute address).
+
+ 2 Output a relaxable 16/24 absolute mov.b address relocation
+ (may relax into an 8bit absolute address). */
+
+static void
+do_a_fix_imm (offset, nibble, operand, relaxmode)
+ int offset, nibble;
+ struct h8_op *operand;
+ int relaxmode;
+{
+ int idx;
+ int size;
+ int where;
+ char *bytes = frag_now->fr_literal + offset;
+
+ char *t = ((operand->mode & MODE) == IMM) ? "#" : "@";
+
+ if (operand->exp.X_add_symbol == 0)
+ {
+ switch (operand->mode & SIZE)
+ {
+ case L_2:
+ check_operand (operand, 0x3, t);
+ bytes[0] |= (operand->exp.X_add_number & 3) << (nibble ? 0 : 4);
+ break;
+ case L_3:
+ case L_3NZ:
+ check_operand (operand, 0x7, t);
+ bytes[0] |= (operand->exp.X_add_number & 7) << (nibble ? 0 : 4);
+ break;
+ case L_4:
+ check_operand (operand, 0xF, t);
+ bytes[0] |= (operand->exp.X_add_number & 15) << (nibble ? 0 : 4);
+ break;
+ case L_5:
+ check_operand (operand, 0x1F, t);
+ bytes[0] |= operand->exp.X_add_number & 31;
+ break;
+ case L_8:
+ case L_8U:
+ check_operand (operand, 0xff, t);
+ bytes[0] |= operand->exp.X_add_number;
+ break;
+ case L_16:
+ case L_16U:
+ check_operand (operand, 0xffff, t);
+ bytes[0] |= operand->exp.X_add_number >> 8;
+ bytes[1] |= operand->exp.X_add_number >> 0;
+ break;
+ case L_24:
+ check_operand (operand, 0xffffff, t);
+ bytes[0] |= operand->exp.X_add_number >> 16;
+ bytes[1] |= operand->exp.X_add_number >> 8;
+ bytes[2] |= operand->exp.X_add_number >> 0;
+ break;
+
+ case L_32:
+ /* This should be done with bfd. */
+ bytes[0] |= operand->exp.X_add_number >> 24;
+ bytes[1] |= operand->exp.X_add_number >> 16;
+ bytes[2] |= operand->exp.X_add_number >> 8;
+ bytes[3] |= operand->exp.X_add_number >> 0;
+ if (relaxmode != 0)
+ {
+ idx = (relaxmode == 2) ? R_MOV24B1 : R_MOVL1;
+ fix_new_exp (frag_now, offset, 4, &operand->exp, 0, idx);
+ }
+ break;
+ }
+ }
+ else
+ {
+ switch (operand->mode & SIZE)
+ {
+ case L_24:
+ case L_32:
+ size = 4;
+ where = (operand->mode & SIZE) == L_24 ? -1 : 0;
+ if (relaxmode == 2)
+ idx = R_MOV24B1;
+ else if (relaxmode == 1)
+ idx = R_MOVL1;
+ else
+ idx = R_RELLONG;
+ break;
default:
- *sizeP=0;
- return "Bad call to MD_ATOF()";
+ as_bad (_("Can't work out size of operand.\n"));
+ case L_16:
+ case L_16U:
+ size = 2;
+ where = 0;
+ if (relaxmode == 2)
+ idx = R_MOV16B1;
+ else
+ idx = R_RELWORD;
+ operand->exp.X_add_number =
+ ((operand->exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000;
+ operand->exp.X_add_number |= (bytes[0] << 8) | bytes[1];
+ break;
+ case L_8:
+ size = 1;
+ where = 0;
+ idx = R_RELBYTE;
+ operand->exp.X_add_number =
+ ((operand->exp.X_add_number & 0xff) ^ 0x80) - 0x80;
+ operand->exp.X_add_number |= bytes[0];
+ }
+
+ fix_new_exp (frag_now,
+ offset + where,
+ size,
+ &operand->exp,
+ 0,
+ idx);
+ }
+}
+
+/* Now we know what sort of opcodes it is, let's build the bytes. */
+
+static void
+build_bytes (this_try, operand)
+ const struct h8_instruction *this_try;
+ struct h8_op *operand;
+{
+ int i;
+ char *output = frag_more (this_try->length);
+ op_type *nibble_ptr = this_try->opcode->data.nib;
+ op_type c;
+ unsigned int nibble_count = 0;
+ int op_at[3];
+ int nib = 0;
+ int movb = 0;
+ char asnibbles[100];
+ char *p = asnibbles;
+ int high, low;
+
+ if (!Hmode && this_try->opcode->available != AV_H8)
+ as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"),
+ this_try->opcode->name);
+ else if (!Smode
+ && this_try->opcode->available != AV_H8
+ && this_try->opcode->available != AV_H8H)
+ as_warn (_("Opcode `%s' with these operand types not available in H8/300H mode"),
+ this_try->opcode->name);
+ else if (!SXmode
+ && this_try->opcode->available != AV_H8
+ && this_try->opcode->available != AV_H8H
+ && this_try->opcode->available != AV_H8S)
+ as_warn (_("Opcode `%s' with these operand types not available in H8/300S mode"),
+ this_try->opcode->name);
+
+ while (*nibble_ptr != (op_type) E)
+ {
+ int d;
+
+ nib = 0;
+ c = *nibble_ptr++;
+
+ d = (c & OP3) == OP3 ? 2 : (c & DST) == DST ? 1 : 0;
+
+ if (c < 16)
+ nib = c;
+ else
+ {
+ int c2 = c & MODE;
+
+ if (c2 == REG || c2 == LOWREG
+ || c2 == IND || c2 == PREINC || c2 == PREDEC
+ || c2 == POSTINC || c2 == POSTDEC)
+ {
+ nib = operand[d].reg;
+ if (c2 == LOWREG)
+ nib &= 7;
+ }
+
+ else if (c & CTRL) /* Control reg operand. */
+ nib = operand[d].reg;
+
+ else if ((c & DISPREG) == (DISPREG))
+ {
+ nib = operand[d].reg;
+ }
+ else if (c2 == ABS)
+ {
+ operand[d].mode = c;
+ op_at[d] = nibble_count;
+ nib = 0;
+ }
+ else if (c2 == IMM || c2 == PCREL || c2 == ABS
+ || (c & ABSJMP) || c2 == DISP)
+ {
+ operand[d].mode = c;
+ op_at[d] = nibble_count;
+ nib = 0;
+ }
+ else if ((c & IGNORE) || (c & DATA))
+ nib = 0;
+
+ else if (c2 == DBIT)
+ {
+ switch (operand[0].exp.X_add_number)
+ {
+ case 1:
+ nib = c;
+ break;
+ case 2:
+ nib = 0x8 | c;
+ break;
+ default:
+ as_bad (_("Need #1 or #2 here"));
+ }
+ }
+ else if (c2 == KBIT)
+ {
+ switch (operand[0].exp.X_add_number)
+ {
+ case 1:
+ nib = 0;
+ break;
+ case 2:
+ nib = 8;
+ break;
+ case 4:
+ if (!Hmode)
+ as_warn (_("#4 not valid on H8/300."));
+ nib = 9;
+ break;
+
+ default:
+ as_bad (_("Need #1 or #2 here"));
+ break;
+ }
+ /* Stop it making a fix. */
+ operand[0].mode = 0;
+ }
+
+ if (c & MEMRELAX)
+ operand[d].mode |= MEMRELAX;
+
+ if (c & B31)
+ nib |= 0x8;
+
+ if (c & B21)
+ nib |= 0x4;
+
+ if (c & B11)
+ nib |= 0x2;
+
+ if (c & B01)
+ nib |= 0x1;
+
+ if (c2 == MACREG)
+ {
+ if (operand[0].mode == MACREG)
+ /* stmac has mac[hl] as the first operand. */
+ nib = 2 + operand[0].reg;
+ else
+ /* ldmac has mac[hl] as the second operand. */
+ nib = 2 + operand[1].reg;
+ }
+ }
+ nibble_count++;
+
+ *p++ = nib;
+ }
+
+ /* Disgusting. Why, oh why didn't someone ask us for advice
+ on the assembler format. */
+ if (OP_KIND (this_try->opcode->how) == O_LDM)
+ {
+ high = (operand[1].reg >> 8) & 0xf;
+ low = (operand[1].reg) & 0xf;
+ asnibbles[2] = high - low;
+ asnibbles[7] = high;
+ }
+ else if (OP_KIND (this_try->opcode->how) == O_STM)
+ {
+ high = (operand[0].reg >> 8) & 0xf;
+ low = (operand[0].reg) & 0xf;
+ asnibbles[2] = high - low;
+ asnibbles[7] = low;
+ }
+
+ for (i = 0; i < this_try->length; i++)
+ output[i] = (asnibbles[i * 2] << 4) | asnibbles[i * 2 + 1];
+
+ /* Note if this is a movb instruction -- there's a special relaxation
+ which only applies to them. */
+ if (this_try->opcode->how == O (O_MOV, SB))
+ movb = 1;
+
+ /* Output any fixes. */
+ for (i = 0; i < this_try->noperands; i++)
+ {
+ int x = operand[i].mode;
+ int x_mode = x & MODE;
+
+ if (x_mode == IMM || x_mode == DISP)
+ do_a_fix_imm (output - frag_now->fr_literal + op_at[i] / 2,
+ op_at[i] & 1, operand + i, (x & MEMRELAX) != 0);
+
+ else if (x_mode == ABS)
+ do_a_fix_imm (output - frag_now->fr_literal + op_at[i] / 2,
+ op_at[i] & 1, operand + i,
+ (x & MEMRELAX) ? movb + 1 : 0);
+
+ else if (x_mode == PCREL)
+ {
+ int size16 = (x & SIZE) == L_16;
+ int size = size16 ? 2 : 1;
+ int type = size16 ? R_PCRWORD : R_PCRBYTE;
+ fixS *fixP;
+
+ check_operand (operand + i, size16 ? 0x7fff : 0x7f, "@");
+
+ if (operand[i].exp.X_add_number & 1)
+ as_warn (_("branch operand has odd offset (%lx)\n"),
+ (unsigned long) operand->exp.X_add_number);
+#ifndef OBJ_ELF
+ /* The COFF port has always been off by one, changing it
+ now would be an incompatible change, so we leave it as-is.
+
+ We don't want to do this for ELF as we want to be
+ compatible with the proposed ELF format from Hitachi. */
+ operand[i].exp.X_add_number -= 1;
+#endif
+ if (size16)
+ {
+ operand[i].exp.X_add_number =
+ ((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000;
+ }
+ else
+ {
+ operand[i].exp.X_add_number =
+ ((operand[i].exp.X_add_number & 0xff) ^ 0x80) - 0x80;
+ }
+
+ /* For BRA/S. */
+ if (! size16)
+ operand[i].exp.X_add_number |= output[op_at[i] / 2];
+
+ fixP = fix_new_exp (frag_now,
+ output - frag_now->fr_literal + op_at[i] / 2,
+ size,
+ &operand[i].exp,
+ 1,
+ type);
+ fixP->fx_signed = 1;
+ }
+ else if (x_mode == MEMIND)
+ {
+ check_operand (operand + i, 0xff, "@@");
+ fix_new_exp (frag_now,
+ output - frag_now->fr_literal + 1,
+ 1,
+ &operand[i].exp,
+ 0,
+ R_MEM_INDIRECT);
+ }
+ else if (x_mode == VECIND)
+ {
+ check_operand (operand + i, 0x7f, "@@");
+ /* FIXME: approximating the effect of "B31" here...
+ This is very hackish, and ought to be done a better way. */
+ operand[i].exp.X_add_number |= 0x80;
+ fix_new_exp (frag_now,
+ output - frag_now->fr_literal + 1,
+ 1,
+ &operand[i].exp,
+ 0,
+ R_MEM_INDIRECT);
}
- 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);
+ else if (x & ABSJMP)
+ {
+ int where = 0;
+ bfd_reloc_code_real_type reloc_type = R_JMPL1;
+
+#ifdef OBJ_ELF
+ /* To be compatible with the proposed H8 ELF format, we
+ want the relocation's offset to point to the first byte
+ that will be modified, not to the start of the instruction. */
+
+ if ((operand->mode & SIZE) == L_32)
+ {
+ where = 2;
+ reloc_type = R_RELLONG;
+ }
+ else
+ where = 1;
+#endif
+
+ /* This jmp may be a jump or a branch. */
+
+ check_operand (operand + i,
+ SXmode ? 0xffffffff : Hmode ? 0xffffff : 0xffff,
+ "@");
+
+ if (operand[i].exp.X_add_number & 1)
+ as_warn (_("branch operand has odd offset (%lx)\n"),
+ (unsigned long) operand->exp.X_add_number);
+
+ if (!Hmode)
+ operand[i].exp.X_add_number =
+ ((operand[i].exp.X_add_number & 0xffff) ^ 0x8000) - 0x8000;
+ fix_new_exp (frag_now,
+ output - frag_now->fr_literal + where,
+ 4,
+ &operand[i].exp,
+ 0,
+ reloc_type);
}
- return ""; /* Someone should teach Dean about null pointers */
+ }
}
-int
- md_parse_option(argP, cntP, vecP)
-char **argP;
-int *cntP;
-char ***vecP;
+/* Try to give an intelligent error message for common and simple to
+ detect errors. */
+static void
+clever_message (instruction, operand)
+ const struct h8_instruction *instruction;
+ struct h8_op *operand;
{
- return 0;
-
+ /* Find out if there was more than one possible opcode. */
+
+ if ((instruction + 1)->idx != instruction->idx)
+ {
+ int argn;
+
+ /* Only one opcode of this flavour, try to guess which operand
+ didn't match. */
+ for (argn = 0; argn < instruction->noperands; argn++)
+ {
+ switch (instruction->opcode->args.nib[argn])
+ {
+ case RD16:
+ if (operand[argn].mode != RD16)
+ {
+ as_bad (_("destination operand must be 16 bit register"));
+ return;
+
+ }
+ break;
+
+ case RS8:
+ if (operand[argn].mode != RS8)
+ {
+ as_bad (_("source operand must be 8 bit register"));
+ return;
+ }
+ break;
+
+ case ABS16DST:
+ if (operand[argn].mode != ABS16DST)
+ {
+ as_bad (_("destination operand must be 16bit absolute address"));
+ return;
+ }
+ break;
+ case RD8:
+ if (operand[argn].mode != RD8)
+ {
+ as_bad (_("destination operand must be 8 bit register"));
+ return;
+ }
+ break;
+
+ case ABS16SRC:
+ if (operand[argn].mode != ABS16SRC)
+ {
+ as_bad (_("source operand must be 16bit absolute address"));
+ return;
+ }
+ break;
+
+ }
+ }
+ }
+ as_bad (_("invalid operands"));
}
-int md_short_jump_size;
-void tc_aout_fix_to_chars () { printf("call to tc_aout_fix_to_chars \n");
- abort(); }
-void md_create_short_jump(ptr, from_addr, to_addr, frag, to_symbol)
-char *ptr;
-long from_addr;
-long to_addr;
-fragS *frag;
-symbolS *to_symbol;
+/* Adjust OPERAND's value and size given that it is accessing a field
+ of SIZE bytes.
+
+ This function handles the choice between @(d:2,ERn) and @(d:16,ERn)
+ when no size is explicitly given. It also scales down the assembly-level
+ displacement in an @(d:2,ERn) operand. */
+
+static void
+fix_operand_size (operand, size)
+ struct h8_op *operand;
+ int size;
{
- as_fatal("failed sanity check.");
+ if ((operand->mode & MODE) == DISP)
+ {
+ /* If the user didn't specify an operand width, see if we
+ can use @(d:2,ERn). */
+ if (SXmode
+ && (operand->mode & SIZE) == 0
+ && (operand->exp.X_add_number == size
+ || operand->exp.X_add_number == size * 2
+ || operand->exp.X_add_number == size * 3))
+ operand->mode |= L_2;
+
+ /* Scale down the displacement in an @(d:2,ERn) operand.
+ X_add_number then contains the desired field value. */
+ if ((operand->mode & SIZE) == L_2)
+ {
+ if (operand->exp.X_add_number % size != 0)
+ as_warn (_("operand/size mis-match"));
+ operand->exp.X_add_number /= size;
+ }
+ }
+
+ /* If the operand needs a size but doesn't have one yet, it must be
+ a 16-bit integer (see colonmod24). */
+ if ((operand->mode & SIZE) == 0)
+ switch (operand->mode & MODE)
+ {
+ case DISP:
+ case INDEXB:
+ case INDEXW:
+ case INDEXL:
+ case ABS:
+ operand->mode |= L_16;
+ break;
+ }
+}
+
+
+/* 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. */
+
+void
+md_assemble (str)
+ char *str;
+{
+ char *op_start;
+ char *op_end;
+ struct h8_op operand[3];
+ const struct h8_instruction *instruction;
+ const struct h8_instruction *prev_instruction;
+
+ char *dot = 0;
+ char c;
+ int size, i;
+
+ /* Drop leading whitespace. */
+ while (*str == ' ')
+ str++;
+
+ /* Find the op code end. */
+ for (op_start = op_end = str;
+ *op_end != 0 && *op_end != ' ';
+ op_end++)
+ {
+ if (*op_end == '.')
+ {
+ dot = op_end + 1;
+ *op_end = 0;
+ op_end += 2;
+ break;
+ }
+ }
+
+ if (op_end == op_start)
+ {
+ as_bad (_("can't find opcode "));
+ }
+ c = *op_end;
+
+ *op_end = 0;
+
+ instruction = (const struct h8_instruction *)
+ hash_find (opcode_hash_control, op_start);
+
+ if (instruction == NULL)
+ {
+ as_bad (_("unknown opcode"));
+ return;
+ }
+
+ /* We used to set input_line_pointer to the result of get_operands,
+ but that is wrong. Our caller assumes we don't change it. */
+
+ operand[0].mode = 0;
+ operand[1].mode = 0;
+ operand[2].mode = 0;
+
+ if (OP_KIND (instruction->opcode->how) == O_MOVAB
+ || OP_KIND (instruction->opcode->how) == O_MOVAW
+ || OP_KIND (instruction->opcode->how) == O_MOVAL)
+ get_mova_operands (op_end, operand);
+ else if (OP_KIND (instruction->opcode->how) == O_RTEL
+ || OP_KIND (instruction->opcode->how) == O_RTSL)
+ get_rtsl_operands (op_end, operand);
+ else
+ get_operands (instruction->noperands, op_end, operand);
+
+ *op_end = c;
+ prev_instruction = instruction;
+
+ size = SN;
+ if (dot)
+ {
+ switch (*dot)
+ {
+ case 'b':
+ size = SB;
+ break;
+
+ case 'w':
+ size = SW;
+ break;
+
+ case 'l':
+ size = SL;
+ break;
+ }
+ }
+ if (OP_KIND (instruction->opcode->how) == O_MOVAB ||
+ OP_KIND (instruction->opcode->how) == O_MOVAW ||
+ OP_KIND (instruction->opcode->how) == O_MOVAL)
+ {
+ switch (operand[0].mode & MODE)
+ {
+ case INDEXB:
+ default:
+ fix_operand_size (&operand[1], 1);
+ break;
+ case INDEXW:
+ fix_operand_size (&operand[1], 2);
+ break;
+ case INDEXL:
+ fix_operand_size (&operand[1], 4);
+ break;
+ }
+ }
+ else
+ {
+ for (i = 0; i < 3 && operand[i].mode != 0; i++)
+ switch (size)
+ {
+ case SN:
+ case SB:
+ default:
+ fix_operand_size (&operand[i], 1);
+ break;
+ case SW:
+ fix_operand_size (&operand[i], 2);
+ break;
+ case SL:
+ fix_operand_size (&operand[i], 4);
+ break;
+ }
+ }
+
+ instruction = get_specific (instruction, operand, size);
+
+ if (instruction == 0)
+ {
+ /* Couldn't find an opcode which matched the operands. */
+ char *where = frag_more (2);
+
+ where[0] = 0x0;
+ where[1] = 0x0;
+ clever_message (prev_instruction, operand);
+
+ return;
+ }
+
+ build_bytes (instruction, operand);
+
+#ifdef BFD_ASSEMBLER
+ dwarf2_emit_insn (instruction->length);
+#endif
}
+#ifndef BFD_ASSEMBLER
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;
+tc_crawl_symbol_chain (headers)
+ object_headers *headers ATTRIBUTE_UNUSED;
{
- as_fatal("failed sanity check.");
+ printf (_("call to tc_crawl_symbol_chain \n"));
+}
+#endif
+
+symbolS *
+md_undefined_symbol (name)
+ char *name ATTRIBUTE_UNUSED;
+{
+ return 0;
}
+#ifndef BFD_ASSEMBLER
void
- md_convert_frag(headers, fragP)
-object_headers *headers;
-fragS * fragP;
+tc_headers_hook (headers)
+ object_headers *headers ATTRIBUTE_UNUSED;
+{
+ printf (_("call to tc_headers_hook \n"));
+}
+#endif
-{ printf("call to md_convert_frag \n"); abort(); }
+/* Various routines to kill one day */
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
-long
- DEFUN(md_section_align,(seg, size),
- segT seg AND
- long size)
+/* 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;
+
+ 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;
+}
+\f
+const char *md_shortopts = "";
+struct option md_longopts[] = {
+ {NULL, no_argument, NULL, 0}
+};
+
+size_t md_longopts_size = sizeof (md_longopts);
+
+int
+md_parse_option (c, arg)
+ int c ATTRIBUTE_UNUSED;
+ char *arg ATTRIBUTE_UNUSED;
{
- return((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
-
+ return 0;
}
void
- md_apply_fix(fixP, val)
-fixS *fixP;
-long val;
+md_show_usage (stream)
+ FILE *stream ATTRIBUTE_UNUSED;
{
- char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
-
- 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:
- abort();
-
- }
}
+\f
+void tc_aout_fix_to_chars PARAMS ((void));
-void DEFUN(md_operand, (expressionP),expressionS *expressionP)
-{ }
+void
+tc_aout_fix_to_chars ()
+{
+ printf (_("call to tc_aout_fix_to_chars \n"));
+ abort ();
+}
+
+void
+md_convert_frag (headers, seg, fragP)
+#ifdef BFD_ASSEMBLER
+ bfd *headers ATTRIBUTE_UNUSED;
+#else
+ object_headers *headers ATTRIBUTE_UNUSED;
+#endif
+ segT seg ATTRIBUTE_UNUSED;
+ fragS *fragP ATTRIBUTE_UNUSED;
+{
+ printf (_("call to md_convert_frag \n"));
+ abort ();
+}
+
+#ifdef BFD_ASSEMBLER
+valueT
+md_section_align (segment, size)
+ segT segment;
+ valueT size;
+{
+ int align = bfd_get_section_alignment (stdoutput, segment);
+ return ((size + (1 << align) - 1) & (-1 << align));
+}
+#else
+valueT
+md_section_align (seg, size)
+ segT seg;
+ valueT size;
+{
+ return ((size + (1 << section_alignment[(int) seg]) - 1)
+ & (-1 << section_alignment[(int) seg]));
+}
+#endif
+
+
+void
+md_apply_fix3 (fixP, valP, seg)
+ fixS *fixP;
+ valueT *valP;
+ segT seg ATTRIBUTE_UNUSED;
+{
+ char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
+ long val = *valP;
+
+ 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:
+ abort ();
+ }
+
+ 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;
-{
- printf("call tomd_estimate_size_before_relax \n"); abort(); }
-/* Put number into target byte order */
-
-void DEFUN(md_number_to_chars,(ptr, use, nbytes),
- char *ptr AND
- long use AND
- int nbytes)
+md_estimate_size_before_relax (fragP, segment_type)
+ register fragS *fragP ATTRIBUTE_UNUSED;
+ register segT segment_type ATTRIBUTE_UNUSED;
{
- 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();
- }
+ printf (_("call tomd_estimate_size_before_relax \n"));
+ abort ();
}
-long md_pcrel_from(fixP)
-fixS *fixP; { abort(); }
-void tc_coff_symbol_emit_hook() { }
+/* Put number into target byte order. */
+void
+md_number_to_chars (ptr, use, nbytes)
+ char *ptr;
+ valueT use;
+ int nbytes;
+{
+ number_to_chars_bigendian (ptr, use, nbytes);
+}
+long
+md_pcrel_from (fixP)
+ fixS *fixP ATTRIBUTE_UNUSED;
+{
+ abort ();
+}
-void tc_reloc_mangle(fix_ptr, intr, base)
-fixS *fix_ptr;
-struct internal_reloc *intr;
-bfd_vma base;
+#ifndef BFD_ASSEMBLER
+void
+tc_reloc_mangle (fix_ptr, intr, base)
+ fixS *fix_ptr;
+ struct internal_reloc *intr;
+ bfd_vma base;
{
- 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 == RELOC_32) {
- /* cons likes to create reloc32's whatever the size of the reloc..
- */
- switch (fix_ptr->fx_size)
- {
-
- case 2:
- intr->r_type = R_RELWORD;
- break;
- case 1:
- intr->r_type = R_RELBYTE;
- break;
- default:
- abort();
-
- }
-
- }
- else {
- intr->r_type = fix_ptr->fx_r_type;
+ 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 == TC_CONS_RELOC)
+ {
+ /* cons likes to create reloc32's whatever the size of the reloc..
+ */
+ switch (fix_ptr->fx_size)
+ {
+ case 4:
+ intr->r_type = R_RELLONG;
+ break;
+ case 2:
+ intr->r_type = R_RELWORD;
+ break;
+ case 1:
+ intr->r_type = R_RELBYTE;
+ break;
+ default:
+ abort ();
}
-
- 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
+ }
+ 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)
+ {
+ if (symbol_ptr->sy_number != -1)
+ intr->r_symndx = symbol_ptr->sy_number;
+ else
+ {
+ symbolS *segsym;
+
+ /* This case arises when a reference is made to `.'. */
+ segsym = seg_info (S_GET_SEGMENT (symbol_ptr))->dot;
+ if (segsym == NULL)
intr->r_symndx = -1;
-
-
+ else
+ {
+ intr->r_symndx = segsym->sy_number;
+ intr->r_offset += S_GET_VALUE (symbol_ptr);
+ }
+ }
+ }
+ else
+ intr->r_symndx = -1;
}
+#else /* BFD_ASSEMBLER */
+arelent *
+tc_gen_reloc (section, fixp)
+ asection *section ATTRIBUTE_UNUSED;
+ fixS *fixp;
+{
+ arelent *rel;
+ bfd_reloc_code_real_type r_type;
+
+ if (fixp->fx_addsy && fixp->fx_subsy)
+ {
+ if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy))
+ || S_GET_SEGMENT (fixp->fx_addsy) == undefined_section)
+ {
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ "Difference of symbols in different sections is not supported");
+ return NULL;
+ }
+ }
+
+ rel = (arelent *) xmalloc (sizeof (arelent));
+ rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+ rel->address = fixp->fx_frag->fr_address + fixp->fx_where;
+ rel->addend = fixp->fx_offset;
+
+ r_type = fixp->fx_r_type;
-/* end of tc-h8300.c */
+#define DEBUG 0
+#if DEBUG
+ fprintf (stderr, "%s\n", bfd_get_reloc_code_name (r_type));
+ fflush(stderr);
+#endif
+ rel->howto = bfd_reloc_type_lookup (stdoutput, r_type);
+ if (rel->howto == NULL)
+ {
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("Cannot represent relocation type %s"),
+ bfd_get_reloc_code_name (r_type));
+ return NULL;
+ }
+
+ return rel;
+}
+#endif
projects / deliverable / binutils-gdb.git / blobdiff