-/* tc-h8300.c -- Assemble code for the Hitachi h8/300
- Copyright (C) 1991 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.
+ 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 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.
+ 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
-
- steve@cygnus.com
- */
+/* Written By Steve Chamberlain <sac@cygnus.com>. */
#include <stdio.h>
#include "as.h"
+#include "subsegs.h"
#include "bfd.h"
-#include "h8300-opcode.h"
-#include <ctype.h>
+#define DEFINE_TABLE
+#define h8_opcodes ops
+#include "opcode/h8300.h"
+#include "safe-ctype.h"
+
+#ifdef OBJ_ELF
+#include "elf/h8.h"
+#endif
+
+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));
+static void pint PARAMS ((int));
+
+int Hmode;
+int Smode;
+
+#define PSIZE (Hmode ? L_32 : L_16)
+#define DMODE (L_16)
+#define DSYMMODE (Hmode ? L_24 : L_16)
+
+int bsize = L_8; /* Default branch displacement. */
+
+struct h8_instruction
+{
+ int length;
+ int noperands;
+ int idx;
+ int size;
+ const struct h8_opcode *opcode;
+};
-char comment_chars[] = { ';',0 };
+struct h8_instruction *h8_instructions;
+
+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
+sbranch (size)
+ int size;
+{
+ bsize = size;
+}
+
+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
- */
-const pseudo_typeS md_pseudo_table[] = {
- { 0, 0, 0 }
+ 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[] =
+{
+ {"h8300h", h8300hmode, 0},
+ {"h8300s", h8300smode, 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}
};
-int md_reloc_size ;
-
+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 */
- char FLT_CHARS[] = "rRsSfFdDxXpP";
+/* Chars that mean this number is a floating point constant
+ As in 0f12.456
+ or 0d1.2345e12. */
+const char FLT_CHARS[] = "rRsSfFdDxXpP";
+static struct hash_control *opcode_hash_control; /* Opcode mnemonics. */
-const relax_typeS md_relax_table[1];
+/* 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 ()
+{
+ unsigned int nopcodes;
+ const struct h8_opcode *p;
+ struct h8_instruction *pi;
+ char prev_buffer[100];
+ int idx = 0;
-static struct hash_control *opcode_hash_control; /* Opcode mnemonics */
-static struct hash_control *register_hash_control; /* Register name hash table */
+#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;
-/*
- 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
-*/
+ nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);
+
+ h8_instructions = (struct h8_instruction *)
+ xmalloc (nopcodes * sizeof (struct h8_instruction));
+
+ for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++)
+ {
+ /* Strip off any . part when inserting the opcode and only enter
+ unique codes into the hash table. */
+ char *src = p->name;
+ unsigned int len = strlen (src);
+ char *dst = malloc (len + 1);
+ char *buffer = dst;
+
+ pi->size = 0;
+ while (*src)
+ {
+ if (*src == '.')
+ {
+ src++;
+ pi->size = *src;
+ break;
+ }
+ *dst++ = *src++;
+ }
+ *dst++ = 0;
+ if (strcmp (buffer, prev_buffer))
+ {
+ hash_insert (opcode_hash_control, buffer, (char *) pi);
+ strcpy (prev_buffer, buffer);
+ idx++;
+ }
+ pi->idx = idx;
-reloc_howto_type *r16;
-reloc_howto_type *r8;
-reloc_howto_type *r8ff;
-reloc_howto_type *r8pcrel;
+ /* Find the number of operands. */
+ pi->noperands = 0;
+ while (p->args.nib[pi->noperands] != E)
+ pi->noperands++;
-void md_begin ()
-{
- bfd_arch_info_type *ai;
- const struct h8_opcode *opcode;
+ /* Find the length of the opcode in bytes. */
+ pi->length = 0;
+ while (p->data.nib[pi->length * 2] != E)
+ pi->length++;
- opcode_hash_control = hash_new();
- for (opcode = h8_opcodes; opcode->name; opcode++) {
- hash_insert(opcode_hash_control, opcode->name, (char *)opcode);
- }
+ pi->opcode = p;
+ }
- ai = bfd_lookup_arch(bfd_arch_h8300,0);
-
- r16 = ai->reloc_type_lookup(ai, BFD_RELOC_16);
- r8 = ai->reloc_type_lookup(ai, BFD_RELOC_8);
- r8ff = ai->reloc_type_lookup(ai, BFD_RELOC_8_FFnn);
- r8pcrel = ai->reloc_type_lookup(ai, BFD_RELOC_8_PCREL);
+ /* Add entry for the NULL vector terminator. */
+ pi->length = 0;
+ pi->noperands = 0;
+ pi->idx = 0;
+ pi->size = 0;
+ pi->opcode = p;
-
+ linkrelax = 1;
}
-
-struct h8_exp {
+struct h8_exp
+{
char *e_beg;
char *e_end;
expressionS e_exp;
};
-struct h8_op
+
+int dispreg;
+int opsize; /* Set when a register size is seen. */
+
+struct h8_op
{
-op_type mode;
+ op_type mode;
unsigned reg;
expressionS exp;
};
-
+static void clever_message PARAMS ((const struct h8_instruction *, struct h8_op *));
+static void build_bytes PARAMS ((const struct h8_instruction *, struct h8_op *));
+static void do_a_fix_imm PARAMS ((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 *, unsigned, 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 *));
/*
- parse operands
- WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
- r0l,r0h,..r7l,r7h
- @WREG
- @WREG+
- @-WREG
- #const
-
+ parse operands
+ WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
+ r0l,r0h,..r7l,r7h
+ @WREG
+ @WREG+
+ @-WREG
+ #const
+ ccr
*/
-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)
-{
- 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') {
- *mode = CCR;
- *reg = 0;
- return 3;
- }
- if (src[0] == 'f' && src[1] == 'p') {
- *mode = r16_sord[dst];
- *reg = 6;
- return 2;
- }
- if (src[0] == 'r') {
- 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;
- }
- }
+/* 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;
+{
+ 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 == '\001')
+ end++;
+ len = end - src;
+
+ if (len == 2 && src[0] == 's' && src[1] == 'p')
+ {
+ *mode = PSIZE | REG | direction;
+ *reg = 7;
+ return len;
+ }
+ if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r')
+ {
+ *mode = CCR;
+ *reg = 0;
+ return len;
+ }
+ if (len == 3 && src[0] == 'e' && src[1] == 'x' && src[2] == 'r')
+ {
+ *mode = EXR;
+ *reg = 0;
+ return len;
+ }
+ if (len == 2 && src[0] == 'f' && src[1] == 'p')
+ {
+ *mode = PSIZE | REG | direction;
+ *reg = 6;
+ return len;
+ }
+ if (len == 3 && src[0] == 'e' && 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 && 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 (src[0] == 'r')
+ {
+ if (src[1] >= '0' && src[1] <= '7')
+ {
+ if (len == 3 && src[2] == 'l')
+ {
+ *mode = L_8 | REG | direction;
+ *reg = (src[1] - '0') + 8;
+ return len;
+ }
+ if (len == 3 && src[2] == 'h')
+ {
+ *mode = L_8 | REG | direction;
+ *reg = (src[1] - '0');
+ return len;
+ }
+ if (len == 2)
+ {
+ *mode = L_16 | REG | direction;
+ *reg = (src[1] - '0');
+ return len;
+ }
+ }
+ }
+
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);
+ 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;
- }
-}
-
-
-static void
-DEFUN(get_operand,(ptr, op, dst),
- char **ptr AND
- struct h8_op *op AND
- unsigned int dst)
+ return new;
+}
+
+static char *
+skip_colonthing (ptr, exp, mode)
+ char *ptr;
+ expressionS *exp ATTRIBUTE_UNUSED;
+ int *mode;
+{
+ if (*ptr == ':')
+ {
+ ptr++;
+ *mode &= ~SIZE;
+ if (*ptr == '8')
+ {
+ ptr++;
+ /* ff fill any 8 bit quantity. */
+ /* exp->X_add_number -= 0x100; */
+ *mode |= L_8;
+ }
+ else
+ {
+ if (*ptr == '2')
+ {
+ *mode |= L_24;
+ }
+ else if (*ptr == '3')
+ {
+ *mode |= L_32;
+ }
+ else if (*ptr == '1')
+ {
+ *mode |= L_16;
+ }
+ 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 absolute 16 bit
+
+ #xx[:size] immediate data
+ @(exp:[8], pc) pc rel
+ @@aa[:8] memory indirect. */
+
+char *
+colonmod24 (op, src)
+ struct h8_op *op;
+ char *src;
+{
+ int mode = 0;
+ src = skip_colonthing (src, &op->exp, &mode);
+
+ if (!mode)
+ {
+ /* Choose a default mode. */
+ if (op->exp.X_add_number < -32768
+ || op->exp.X_add_number > 32767)
+ {
+ if (Hmode)
+ mode = L_24;
+ else
+ mode = L_16;
+ }
+ else if (op->exp.X_add_symbol
+ || op->exp.X_op_symbol)
+ mode = DSYMMODE;
+ else
+ mode = DMODE;
+ }
+
+ op->mode |= mode;
+ return src;
+}
+
+static void
+get_operand (ptr, op, dst, direction)
+ char **ptr;
+ struct h8_op *op;
+ unsigned int dst ATTRIBUTE_UNUSED;
+ int direction;
{
char *src = *ptr;
op_type mode;
- unsigned int num;
- unsigned int len;
+ unsigned int num;
+ unsigned int len;
+
op->mode = E;
- while (*src == ' ') src++;
- len = parse_reg(src, &op->mode, &op->reg, dst);
- if (len) {
- *ptr = src + len;
- return ;
- }
-
- if (*src == '@') {
- src++;
- if (*src == '-') {
- src++;
- len = parse_reg(src, &mode, &num, dst);
- if (len == 0 || mode != r16_sord[dst]) {
- as_bad("@- needs word register");
- }
- op->mode = RDDEC;
- op->reg = num;
+ /* 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 (src[0] == 'e' && src[1] == 'r' && ISDIGIT (src[2])
+ && src[3] == '-' && src[4] == 'e' && src[5] == 'r' && ISDIGIT (src[6]))
+ {
+ int low, high;
+
+ low = src[2] - '0';
+ high = src[6] - '0';
+
+ if (high < low)
+ as_bad (_("Invalid register list for ldm/stm\n"));
+
+ if (low % 2)
+ as_bad (_("Invalid register list for ldm/stm\n"));
+
+ if (high - low > 3)
+ as_bad (_("Invalid register list for ldm/stm\n"));
+
+ if (high - low != 1
+ && low % 4)
+ 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;
+ }
+
+ len = parse_reg (src, &op->mode, &op->reg, direction);
+ if (len)
+ {
*ptr = src + len;
return;
}
- if (*src == '(' && ')') {
- /* Disp */
+
+ if (*src == '@')
+ {
src++;
- src = parse_exp(src, &op->exp);
-
- if (*src == ')') {
- src++;
- op->mode = abs_sord[dst];
- *ptr = src;
- return;
- }
- if (*src != ',') {
- as_bad("expected @(exp, reg16)");
- }
+ if (*src == '@')
+ {
+ src++;
+ src = parse_exp (src, &op->exp);
+
+ src = skip_colonthing (src, &op->exp, &op->mode);
+
+ *ptr = src;
+
+ op->mode = MEMIND;
+ return;
+ }
+
+ if (*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 = RDDEC;
+ op->reg = num;
+ *ptr = src + len;
+ return;
+ }
+ if (*src == '(')
+ {
+ /* Disp. */
+ src++;
+
+ /* Start off assuming a 16 bit offset. */
+
+ src = parse_exp (src, &op->exp);
+
+ src = colonmod24 (op, src);
+
+ if (*src == ')')
+ {
+ src++;
+ op->mode |= ABS | direction;
+ *ptr = src;
+ return;
+ }
+
+ if (*src != ',')
+ {
+ as_bad (_("expected @(exp, reg16)"));
+ return;
+
+ }
+ src++;
+
+ len = parse_reg (src, &mode, &op->reg, direction);
+ if (len == 0 || !(mode & REG))
+ {
+ as_bad (_("expected @(exp, reg16)"));
+ return;
+ }
+ op->mode |= DISP | direction;
+ dispreg = op->reg;
+ src += len;
+ src = skip_colonthing (src, &op->exp, &op->mode);
+
+ if (*src != ')' && '(')
+ {
+ as_bad (_("expected @(exp, reg16)"));
+ return;
+ }
+ *ptr = src + 1;
+
+ return;
+ }
+ len = parse_reg (src, &mode, &num, direction);
+
+ if (len)
+ {
+ src += len;
+ if (*src == '+')
+ {
+ src++;
+ if ((mode & SIZE) != PSIZE)
+ as_bad (_("Wrong size pointer register for architecture."));
+ op->mode = RSINC;
+ op->reg = num;
+ *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++;
- len = parse_reg(src, &mode, &op->reg, dst);
- if (len == 0 || mode != r16_sord[dst])
- {
- as_bad("expected @(exp, reg16)");
- }
- op->mode = disp_sord[dst];
- src += len;
- if (*src != ')' && '(') {
- as_bad("expected @(exp, reg16)");
-
- }
- *ptr = src +1;
+ op->mode = IMM;
+ src = parse_exp (src, &op->exp);
+ *ptr = skip_colonthing (src, &op->exp, &op->mode);
return;
}
- len = parse_reg(src, &mode, &num, dst);
-
- if(len) {
- src += len;
- if (*src == '+') {
- src++;
- if (mode != RS16) {
- as_bad("@Rn+ needs word register");
+ else if (strncmp (src, "mach", 4) == 0
+ || strncmp (src, "macl", 4) == 0)
+ {
+ op->reg = 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"));
}
- op->mode = RSINC;
- op->reg = num;
- *ptr = src;
- return;
- }
- if (mode != r16_sord[dst]) {
- as_bad("@Rn needs word register");
- }
- op->mode =rind_sord[dst];
- op->reg = num;
+ else
+ op->mode = PCREL | bsize;
+
*ptr = src;
- return;
}
- else {
- /* must be a symbol */
- op->mode = abs_sord[dst];
- *ptr = parse_exp(src, &op->exp);
- return;
+}
+
+static char *
+get_operands (noperands, op_end, operand)
+ unsigned int noperands;
+ char *op_end;
+ struct h8_op *operand;
+{
+ 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, SRC);
+ if (*ptr == ',')
+ {
+ ptr++;
+ get_operand (&ptr, operand + 1, 1, DST);
+ }
+ else
+ {
+ operand[1].mode = 0;
+ }
+ break;
+
+ case 2:
+ ptr++;
+ get_operand (&ptr, operand + 0, 0, SRC);
+ if (*ptr == ',')
+ ptr++;
+ get_operand (&ptr, operand + 1, 1, DST);
+ break;
+
+ default:
+ abort ();
}
- }
-
- if (*src == '#') {
- src++;
- op->mode = IMM16;
- *ptr = parse_exp(src, &op->exp);
- return;
- }
- else {
- *ptr = parse_exp(src, &op->exp);
- op->mode = DISP8;
- }
-}
-
-/* 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.
- */
-
-
-void
-DEFUN(md_assemble,(str),
- char *str)
+ return ptr;
+}
+
+/* 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;
{
- char *op_start;
- char *op_end;
- unsigned int i;
-
- struct h8_opcode * opcode;
- /* Drop leading whitespace */
- while (*str == ' ')
- str++;
+ const struct h8_instruction *this_try = instruction;
+ int found = 0;
+ int this_index = instruction->idx;
+
+ /* There's only one ldm/stm and it's easier to just
+ get out quick for them. */
+ if (strcmp (instruction->opcode->name, "stm.l") == 0
+ || strcmp (instruction->opcode->name, "ldm.l") == 0)
+ return this_try;
+
+ while (this_index == instruction->idx && !found)
+ {
+ found = 1;
+
+ this_try = instruction++;
+ if (this_try->noperands == 0)
+ {
+ int this_size;
+
+ this_size = this_try->opcode->how & SN;
+ if (this_size != size && (this_size != SB || size != SN))
+ found = 0;
+ }
+ else
+ {
+ int i;
+
+ for (i = 0; i < this_try->noperands && found; i++)
+ {
+ op_type op = this_try->opcode->args.nib[i];
+ int x = operands[i].mode;
+ if ((op & (DISP | REG)) == (DISP | REG)
+ && ((x & (DISP | REG)) == (DISP | REG)))
+ {
+ dispreg = operands[i].reg;
+ }
+ else if (op & REG)
+ {
+ if (!(x & REG))
+ found = 0;
- /* find the op code end */
- for (op_start = op_end = str;
- *op_end != 0 && *op_end != ' ';
- op_end ++)
- ;
+ if (x & L_P)
+ x = (x & ~L_P) | (Hmode ? L_32 : L_16);
+ if (op & L_P)
+ op = (op & ~L_P) | (Hmode ? L_32 : L_16);
+
+ opsize = op & SIZE;
- if (op_end == op_start) {
- as_bad("can't find opcode ");
+ /* The size of the reg is v important. */
+ if ((op & SIZE) != (x & SIZE))
+ found = 0;
+ }
+ else if ((op & ABSJMP) && (x & ABS))
+ {
+ operands[i].mode &= ~ABS;
+ operands[i].mode |= ABSJMP;
+ /* But it may not be 24 bits long. */
+ if (!Hmode)
+ {
+ operands[i].mode &= ~SIZE;
+ operands[i].mode |= L_16;
+ }
+ }
+ else if ((op & (KBIT | DBIT)) && (x & IMM))
+ {
+ /* This is ok if the immediate value is sensible. */
+ }
+ else if (op & PCREL)
+ {
+ /* The size of the displacement is important. */
+ if ((op & SIZE) != (x & SIZE))
+ found = 0;
+ }
+ else if ((op & (DISP | IMM | ABS))
+ && (op & (DISP | IMM | ABS)) == (x & (DISP | IMM | ABS)))
+ {
+ /* Promote a L_24 to L_32 if it makes us match. */
+ if ((x & L_24) && (op & L_32))
+ {
+ x &= ~L_24;
+ x |= L_32;
+ }
+ /* Promote an L8 to L_16 if it makes us match. */
+ if (op & ABS && op & L_8 && op & DISP)
+ {
+ if (x & L_16)
+ found = 1;
+ }
+ else if ((x & SIZE) != 0
+ && ((op & SIZE) != (x & SIZE)))
+ found = 0;
+ }
+ else if ((op & MACREG) != (x & MACREG))
+ {
+ found = 0;
+ }
+ else if ((op & MODE) != (x & MODE))
+ {
+ found = 0;
+ }
+ }
+ }
}
- *op_end = 0;
- opcode = (struct h8_opcode *) hash_find(opcode_hash_control,
- op_start);
+ if (found)
+ return this_try;
+ else
+ return 0;
+}
- if (opcode == NULL) {
- as_bad("unknown opcode");
- return;
+static void
+check_operand (operand, width, string)
+ struct h8_op *operand;
+ unsigned int width;
+ char *string;
+{
+ 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 ((operand->exp.X_add_number & ~width) != 0 &&
+ (operand->exp.X_add_number | width) != (unsigned)(~0))
+ {
+ 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, operand, relaxmode)
+ int offset;
+ struct h8_op *operand;
+ int relaxmode;
{
- int ok = 1;
- int j,i;
- int dispreg = 0;
- struct h8_op operand[2];
- char *ptr = op_end+1;
- if (opcode->noperands)
- get_operand(& ptr, &operand[0],0);
- else operand[0].mode = 0;
- if (opcode->noperands==2) {
- if (*ptr == ',') ptr++;
- get_operand(& ptr, &operand[1], 1);
+ int idx;
+ int size;
+ int where;
+
+ char *t = operand->mode & IMM ? "#" : "@";
+
+ if (operand->exp.X_add_symbol == 0)
+ {
+ char *bytes = frag_now->fr_literal + offset;
+ switch (operand->mode & SIZE)
+ {
+ case L_2:
+ check_operand (operand, 0x3, t);
+ bytes[0] |= (operand->exp.X_add_number) << 4;
+ break;
+ case L_3:
+ check_operand (operand, 0x7, t);
+ bytes[0] |= (operand->exp.X_add_number) << 4;
+ break;
+ case L_8:
+ check_operand (operand, 0xff, t);
+ bytes[0] = operand->exp.X_add_number;
+ break;
+ case L_16:
+ 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 operand[1].mode = 0;
+ 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:
+ as_bad (_("Can't work out size of operand.\n"));
+ case L_16:
+ 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;
+ break;
+ case L_8:
+ size = 1;
+ where = 0;
+ idx = R_RELBYTE;
+ operand->exp.X_add_number =
+ ((operand->exp.X_add_number & 0xff) ^ 0x80) - 0x80;
+ }
+ 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;
{
- struct h8_opcode *this_try ;
- int found = 0;
- for (j = 0; j < opcode->nopcodes && !found; j++) {
- this_try = opcode + j;
- for (i = 0; i < opcode->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:
+ 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 absat = 0;
+ int immat = 0;
+ int nib = 0;
+ int movb = 0;
+ char asnibbles[30];
+ char *p = asnibbles;
+
+ if (!(this_try->opcode->inbase || Hmode))
+ as_warn (_("Opcode `%s' with these operand types not available in H8/300 mode"),
+ this_try->opcode->name);
+
+ while (*nibble_ptr != E)
+ {
+ int d;
+ c = *nibble_ptr++;
+
+ d = (c & (DST | SRC_IN_DST)) != 0;
+
+ if (c < 16)
+ nib = c;
+ else
+ {
+ if (c & (REG | IND | INC | DEC))
+ nib = operand[d].reg;
+
+ else if ((c & DISPREG) == (DISPREG))
+ nib = dispreg;
+
+ else if (c & ABS)
+ {
+ operand[d].mode = c;
+ absat = nibble_count / 2;
+ nib = 0;
+ }
+ else if (c & (IMM | PCREL | ABS | ABSJMP | DISP))
+ {
+ operand[d].mode = c;
+ immat = nibble_count / 2;
+ nib = 0;
+ }
+ else if (c & IGNORE)
+ nib = 0;
+
+ else if (c & 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 (c & 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 & 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 (strcmp (this_try->opcode->name, "stm.l") == 0
+ || strcmp (this_try->opcode->name, "ldm.l") == 0)
+ {
+ int high, low;
+ high = (operand[this_try->opcode->name[0] == 'l' ? 1 : 0].reg >> 8) & 0xf;
+ low = operand[this_try->opcode->name[0] == 'l' ? 1 : 0].reg & 0xf;
+
+ asnibbles[2] = high - low;
+ asnibbles[7] = (this_try->opcode->name[0] == 'l') ? high : 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 (strcmp (this_try->opcode->name, "mov.b") == 0)
+ movb = 1;
+
+ /* Output any fixes. */
+ for (i = 0; i < 2; i++)
+ {
+ int x = operand[i].mode;
+
+ if (x & (IMM | DISP))
+ do_a_fix_imm (output - frag_now->fr_literal + immat,
+ operand + i, (x & MEMRELAX) != 0);
+
+ else if (x & ABS)
+ do_a_fix_imm (output - frag_now->fr_literal + absat,
+ operand + i, (x & MEMRELAX) ? movb + 1 : 0);
+
+ else if (x & PCREL)
+ {
+ int size16 = x & (L_16);
+ int where = size16 ? 2 : 1;
+ 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
+ operand[i].exp.X_add_number =
+ ((operand[i].exp.X_add_number & 0xff) ^ 0x80) - 0x80;
+
+ fixP = fix_new_exp (frag_now,
+ output - frag_now->fr_literal + where,
+ size,
+ &operand[i].exp,
+ 1,
+ type);
+ fixP->fx_signed = 1;
+ }
+ else if (x & 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 & ABSJMP)
+ {
+ int where = 0;
+
+#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. */
+ where += 1;
+#endif
+
+ /* This jmp may be a jump or a branch. */
+
+ check_operand (operand + i, 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,
+ R_JMPL1);
+ }
+ }
+}
+
+/* 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;
+{
+ /* 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 DISPSRC:
- case DISPDST:
- dispreg = operand[i].reg;
- case RD8:
+
case RS8:
- case RDIND:
- case RSIND:
- case RD16:
- case RS16:
- case CCR:
- case RSINC:
- case RDDEC:
- if (operand[i].mode != op) goto fail;
+ if (operand[argn].mode != RS8)
+ {
+ as_bad (_("source operand must be 8 bit register"));
+ return;
+ }
break;
- case IMM8:
- /* We have an expression, called IMM16, but we know we
- want an 8 bit value here */
- if (operand[i].mode != IMM16) goto fail;
- operand[i].mode = IMM8;
+
+ case ABS16DST:
+ if (operand[argn].mode != ABS16DST)
+ {
+ as_bad (_("destination operand must be 16bit absolute address"));
+ return;
+ }
break;
- case KBIT:
- case IMM16:
- case IMM3:
- if (operand[i].mode != IMM16) goto fail;
+ case RD8:
+ if (operand[argn].mode != RD8)
+ {
+ as_bad (_("destination operand must be 8 bit register"));
+ return;
+ }
break;
+
case ABS16SRC:
- case ABS8SRC:
- if (operand[i].mode != ABS16SRC) goto fail;
- break;
- case ABS16DST:
- case ABS8DST:
- if (operand[i].mode != ABS16DST) goto fail;
-
+ if (operand[argn].mode != ABS16SRC)
+ {
+ as_bad (_("source operand must be 16bit absolute address"));
+ return;
+ }
break;
+
}
}
- found =1;
- fail: ;
- }
- if (found == 0)
- as_bad("illegal operands for opcode");
-
-
- /* Now we know what sort of opcodes etc, lets build the bytes -
- actually we know how big the instruction will be too. So we
- can get
- */
-{
- 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 = dispreg;
- break;
- case 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");
- break;
-
- case ABS16DST:
- nib = 0;
- break;
- case DISPSRC:
- case ABS16SRC:
- case IMM16:
- nib=0;
- break;
-
-
- case ABS8DST:
- case ABS8SRC:
- case IGNORE:
-
-
- nib = 0;
- break;
- case DISP8:
- 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++;
- }
+ }
+ as_bad (_("invalid operands"));
+}
+
+/* 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[2];
+ const struct h8_instruction *instruction;
+ const struct h8_instruction *prev_instruction;
+
+ char *dot = 0;
+ char c;
+ int size;
+ /* 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;
}
+ }
- /* output any fixes */
- for (i = 0; i < 2; i++)
- {
- switch (operand[i].mode) {
- case 0:
- break;
- case DISP8:
- 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,
- (int)r8pcrel);
- break;
- case IMM8:
- 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,
- 0);
- break;
-
- case ABS16SRC:
- case ABS16DST:
- case IMM16:
- case DISPSRC:
- case DISPDST:
- 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,
- (int)r16);
- break;
- case RS8:
- case RD8:
- case RS16:
- case RD16:
- case RDDEC:
- case KBIT:
- case RSINC:
- case RDIND:
- case RSIND:
- break;
- default:
- abort();
- }
- }
+ 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);
-void
-DEFUN(tc_crawl_symbol_chain, (headers),
-object_headers *headers)
-{
- printf("call to tc_crawl_symbol_chain \n");
+ 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. */
+
+ (void) 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;
+ }
+ }
+ 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;
+ }
+ if (instruction->size && dot)
+ {
+ if (instruction->size != *dot)
+ {
+ as_warn (_("mismatch between opcode size and operand size"));
+ }
+ }
+
+ build_bytes (instruction, operand);
}
-symbolS *DEFUN(md_undefined_symbol,(name),
- char *name)
+#ifndef BFD_ASSEMBLER
+void
+tc_crawl_symbol_chain (headers)
+ object_headers *headers ATTRIBUTE_UNUSED;
{
-return 0;
+ printf (_("call to tc_crawl_symbol_chain \n"));
}
+#endif
-void
-DEFUN(tc_headers_hook,(headers),
- object_headers *headers)
+symbolS *
+md_undefined_symbol (name)
+ char *name ATTRIBUTE_UNUSED;
{
- printf("call to tc_headers_hook \n");
+ return 0;
}
+
+#ifndef BFD_ASSEMBLER
void
-DEFUN_VOID(md_end)
+tc_headers_hook (headers)
+ object_headers *headers ATTRIBUTE_UNUSED;
{
+ printf (_("call to tc_headers_hook \n"));
}
+#endif
/* 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.
- */
-char *
-md_atof(type,litP,sizeP)
-char type;
-char *litP;
-int *sizeP;
-{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
- char *atof_ieee();
-
- switch(type) {
- case 'f':
- case 'F':
- case 's':
- case 'S':
- prec = 2;
- break;
-
- case 'd':
- case 'D':
- case 'r':
- case 'R':
- prec = 4;
- break;
-
- case 'x':
- case 'X':
- prec = 6;
- break;
-
- case 'p':
- case 'P':
- prec = 6;
- break;
+/* 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. */
- default:
- *sizeP=0;
- return "Bad call to MD_ATOF()";
- }
- t=atof_ieee(input_line_pointer,type,words);
- if(t)
- input_line_pointer=t;
-
- *sizeP=prec * sizeof(LITTLENUM_TYPE);
- for(wordP=words;prec--;) {
- md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE));
- litP+=sizeof(LITTLENUM_TYPE);
- }
- return ""; /* Someone should teach Dean about null pointers */
+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}
+};
-int
-md_parse_option(argP, cntP, vecP)
- char **argP;
- int *cntP;
- char ***vecP;
-
- {abort();
- }
+size_t md_longopts_size = sizeof (md_longopts);
-int md_short_jump_size;
+int
+md_parse_option (c, arg)
+ int c ATTRIBUTE_UNUSED;
+ char *arg ATTRIBUTE_UNUSED;
+{
+ return 0;
+}
-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;
+void
+md_show_usage (stream)
+ FILE *stream ATTRIBUTE_UNUSED;
{
- as_fatal("failed sanity check.");
- }
+}
+\f
+void tc_aout_fix_to_chars PARAMS ((void));
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_aout_fix_to_chars ()
{
- as_fatal("failed sanity check.");
+ printf (_("call to tc_aout_fix_to_chars \n"));
+ abort ();
}
void
-md_convert_frag(headers, fragP)
-object_headers *headers;
- fragS * fragP;
+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
- { printf("call to md_convert_frag \n"); abort(); }
-long
-DEFUN(md_section_align,(seg, size),
- segT seg AND
- long size)
+void
+md_apply_fix3 (fixP, valP, seg)
+ fixS *fixP;
+ valueT *valP;
+ segT seg ATTRIBUTE_UNUSED;
{
- return((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
+ 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_estimate_size_before_relax (fragP, segment_type)
+ register fragS *fragP ATTRIBUTE_UNUSED;
+ register segT segment_type ATTRIBUTE_UNUSED;
+{
+ printf (_("call tomd_estimate_size_before_relax \n"));
+ abort ();
+}
+
+/* Put number into target byte order. */
void
-md_apply_fix(fixP, val)
- fixS *fixP;
- long val;
+md_number_to_chars (ptr, use, nbytes)
+ char *ptr;
+ valueT use;
+ int nbytes;
{
- char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
+ number_to_chars_bigendian (ptr, use, nbytes);
+}
- switch(fixP->fx_size) {
- case 1:
- *buf++=val;
- break;
- case 2:
- *buf++=(val>>8);
- *buf++=val;
- break;
+long
+md_pcrel_from (fixP)
+ fixS *fixP ATTRIBUTE_UNUSED;
+{
+ abort ();
+}
+
+#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 == TC_CONS_RELOC)
+ {
+ /* cons likes to create reloc32's whatever the size of the reloc..
+ */
+ switch (fix_ptr->fx_size)
+ {
case 4:
- *buf++=(val>>24);
- *buf++=(val>>16);
- *buf++=(val>>8);
- *buf++=val;
- break;
+ intr->r_type = R_RELLONG;
+ break;
+ case 2:
+ intr->r_type = R_RELWORD;
+ break;
+ case 1:
+ intr->r_type = R_RELBYTE;
+ break;
default:
- abort();
-
+ 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)
+ {
+ 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;
+ }
+ }
-void DEFUN(md_operand, (expressionP),expressionS *expressionP)
-{ }
+ 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;
+
+#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;
+ }
-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)
-{
- 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; { abort(); }
-
-void tc_coff_symbol_emit_hook() { }
+ return rel;
+}
+#endif
projects / deliverable / binutils-gdb.git / blobdiff