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binutils-gdb/gas/config/tc-h8500.c

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/* tc-h8500.c -- Assemble code for the Hitachi H8/500
Copyright 1993, 1994, 1995, 1998, 2000, 2001
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, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* Written By Steve Chamberlain <sac@cygnus.com>. */
#include <stdio.h>
#include "as.h"
#include "bfd.h"
#include "subsegs.h"
#define DEFINE_TABLE
#define ASSEMBLER_TABLE
#include "opcodes/h8500-opc.h"
#include "safe-ctype.h"
const char comment_chars[] = "!";
const char line_separator_chars[] = ";";
const char line_comment_chars[] = "!#";
/* This table describes all the machine specific pseudo-ops the assembler
has to support. The fields are:
pseudo-op name without dot
function to call to execute this pseudo-op
Integer arg to pass to the function
*/
void cons ();
const pseudo_typeS md_pseudo_table[] =
{
{"int", cons, 2},
{"data.b", cons, 1},
{"data.w", cons, 2},
{"data.l", cons, 4},
{"form", listing_psize, 0},
{"heading", listing_title, 0},
{"import", s_ignore, 0},
{"page", listing_eject, 0},
{"program", s_ignore, 0},
{0, 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";
#define C(a,b) ENCODE_RELAX(a,b)
#define ENCODE_RELAX(what,length) (((what) << 2) + (length))
#define GET_WHAT(x) ((x>>2))
#define BYTE_DISP 1
#define WORD_DISP 2
#define UNDEF_BYTE_DISP 0
#define UNDEF_WORD_DISP 3
#define BRANCH 1
#define SCB_F 2
#define SCB_TST 3
#define END 4
#define BYTE_F 127
#define BYTE_B -126
#define WORD_F 32767
#define WORD_B 32768
relax_typeS md_relax_table[C (END, 0)] = {
{ 0, 0, 0, 0 },
{ 0, 0, 0, 0 },
{ 0, 0, 0, 0 },
{ 0, 0, 0, 0 },
/* BRANCH */
{ 0, 0, 0, 0 },
{ BYTE_F, BYTE_B, 2, C (BRANCH, WORD_DISP) },
{ WORD_F, WORD_B, 3, 0 },
{ 0, 0, 3, 0 },
/* SCB_F */
{ 0, 0, 0, 0 },
{ BYTE_F, BYTE_B, 3, C (SCB_F, WORD_DISP) },
{ WORD_F, WORD_B, 8, 0 },
{ 0, 0, 8, 0 },
/* SCB_TST */
{ 0, 0, 0, 0 },
{ BYTE_F, BYTE_B, 3, C (SCB_TST, WORD_DISP) },
{ WORD_F, WORD_B, 10, 0 },
{ 0, 0, 10, 0 }
};
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 ()
{
h8500_opcode_info *opcode;
char prev_buffer[100];
int idx = 0;
opcode_hash_control = hash_new ();
prev_buffer[0] = 0;
/* Insert unique names into hash table */
for (opcode = h8500_table; opcode->name; opcode++)
{
if (idx != opcode->idx)
{
hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
idx++;
}
}
}
static int rn; /* register number used by RN */
static int rs; /* register number used by RS */
static int rd; /* register number used by RD */
static int crb; /* byte size cr */
static int crw; /* word sized cr */
static int cr; /* unknown size cr */
static expressionS displacement;/* displacement expression */
static int displacement_size; /* and size if given */
static int immediate_inpage;
static expressionS immediate; /* immediate expression */
static int immediate_size; /* and size if given */
static expressionS absolute; /* absolute expression */
static int absolute_size; /* and size if given */
typedef struct
{
int type;
int reg;
expressionS exp;
int page;
}
h8500_operand_info;
/* Try to parse a reg name. Return the number of chars consumed. */
static int
parse_reg (src, mode, reg)
char *src;
int *mode;
int *reg;
{
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] == 'r')
{
if (src[1] >= '0' && src[1] <= '7')
{
*mode = RN;
*reg = (src[1] - '0');
return len;
}
}
if (len == 2 && src[0] == 's' && src[1] == 'p')
{
*mode = RN;
*reg = 7;
return len;
}
if (len == 3 && src[0] == 'c' && src[1] == 'c' && src[2] == 'r')
{
*mode = CRB;
*reg = 1;
return len;
}
if (len == 2 && src[0] == 's' && src[1] == 'r')
{
*mode = CRW;
*reg = 0;
return len;
}
if (len == 2 && src[0] == 'b' && src[1] == 'r')
{
*mode = CRB;
*reg = 3;
return len;
}
if (len == 2 && src[0] == 'e' && src[1] == 'p')
{
*mode = CRB;
*reg = 4;
return len;
}
if (len == 2 && src[0] == 'd' && src[1] == 'p')
{
*mode = CRB;
*reg = 5;
return len;
}
if (len == 2 && src[0] == 't' && src[1] == 'p')
{
*mode = CRB;
*reg = 7;
return len;
}
if (len == 2 && src[0] == 'f' && src[1] == 'p')
{
*mode = RN;
*reg = 6;
return len;
}
return 0;
}
static char *
parse_exp (s, op, page)
char *s;
expressionS *op;
int *page;
{
char *save;
char *new;
save = input_line_pointer;
*page = 0;
if (s[0] == '%')
{
if (s[1] == 'p' && s[2] == 'a' && s[3] == 'g' && s[4] == 'e')
{
s += 5;
*page = 'p';
}
if (s[1] == 'h' && s[2] == 'i' && s[3] == '1' && s[4] == '6')
{
s += 5;
*page = 'h';
}
else if (s[1] == 'o' && s[2] == 'f' && s[3] == 'f')
{
s += 4;
*page = 'o';
}
}
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;
}
typedef enum
{
exp_signed, exp_unsigned, exp_sandu
} sign_type;
static char *
skip_colonthing (sign, ptr, exp, def, size8, size16, size24)
sign_type sign;
char *ptr;
h8500_operand_info *exp;
int def;
int size8;
int size16;
int size24;
{
ptr = parse_exp (ptr, &exp->exp, &exp->page);
if (*ptr == ':')
{
ptr++;
if (*ptr == '8')
{
ptr++;
exp->type = size8;
}
else if (ptr[0] == '1' & ptr[1] == '6')
{
ptr += 2;
exp->type = size16;
}
else if (ptr[0] == '2' & ptr[1] == '4')
{
if (!size24)
{
as_bad (_(":24 not valid for this opcode"));
}
ptr += 2;
exp->type = size24;
}
else
{
as_bad (_("expect :8,:16 or :24"));
exp->type = size16;
}
}
else
{
if (exp->page == 'p')
{
exp->type = IMM8;
}
else if (exp->page == 'h')
{
exp->type = IMM16;
}
else
{
/* Let's work out the size from the context */
int n = exp->exp.X_add_number;
if (size8
&& exp->exp.X_op == O_constant
&& ((sign == exp_signed && (n >= -128 && n <= 127))
|| (sign == exp_unsigned && (n >= 0 && (n <= 255)))
|| (sign == exp_sandu && (n >= -128 && (n <= 255)))))
{
exp->type = size8;
}
else
{
exp->type = def;
}
}
}
return ptr;
}
static int
parse_reglist (src, op)
char *src;
h8500_operand_info *op;
{
int mode;
int rn;
int mask = 0;
int rm;
int idx = 1; /* skip ( */
while (src[idx] && src[idx] != ')')
{
int done = parse_reg (src + idx, &mode, &rn);
if (done)
{
idx += done;
mask |= 1 << rn;
}
else
{
as_bad (_("syntax error in reg list"));
return 0;
}
if (src[idx] == '-')
{
idx++;
done = parse_reg (src + idx, &mode, &rm);
if (done)
{
idx += done;
while (rn <= rm)
{
mask |= 1 << rn;
rn++;
}
}
else
{
as_bad (_("missing final register in range"));
}
}
if (src[idx] == ',')
idx++;
}
idx++;
op->exp.X_add_symbol = 0;
op->exp.X_op_symbol = 0;
op->exp.X_add_number = mask;
op->exp.X_op = O_constant;
op->exp.X_unsigned = 1;
op->type = IMM8;
return idx;
}
/* The many forms of operand:
Rn Register direct
@Rn Register indirect
@(disp[:size], Rn) Register indirect with displacement
@Rn+
@-Rn
@aa[:size] absolute
#xx[:size] immediate data
*/
static void
get_operand (ptr, op, ispage)
char **ptr;
h8500_operand_info *op;
char ispage;
{
char *src = *ptr;
int mode;
unsigned int num;
unsigned int len;
op->page = 0;
if (src[0] == '(' && src[1] == 'r')
{
/* This is a register list */
*ptr = src + parse_reglist (src, op);
return;
}
len = parse_reg (src, &op->type, &op->reg);
if (len)
{
*ptr = src + len;
return;
}
if (*src == '@')
{
src++;
if (*src == '-')
{
src++;
len = parse_reg (src, &mode, &num);
if (len == 0)
{
/* Oops, not a reg after all, must be ordinary exp */
src--;
/* must be a symbol */
*ptr = skip_colonthing (exp_unsigned, src,
op, ABS16, ABS8, ABS16, ABS24);
return;
}
op->type = RNDEC;
op->reg = num;
*ptr = src + len;
return;
}
if (*src == '(')
{
/* Disp */
src++;
src = skip_colonthing (exp_signed, src,
op, RNIND_D16, RNIND_D8, RNIND_D16, 0);
if (*src != ',')
{
as_bad (_("expected @(exp, Rn)"));
return;
}
src++;
len = parse_reg (src, &mode, &op->reg);
if (len == 0 || mode != RN)
{
as_bad (_("expected @(exp, Rn)"));
return;
}
src += len;
if (*src != ')')
{
as_bad (_("expected @(exp, Rn)"));
return;
}
*ptr = src + 1;
return;
}
len = parse_reg (src, &mode, &num);
if (len)
{
src += len;
if (*src == '+')
{
src++;
if (mode != RN)
{
as_bad (_("@Rn+ needs word register"));
return;
}
op->type = RNINC;
op->reg = num;
*ptr = src;
return;
}
if (mode != RN)
{
as_bad (_("@Rn needs word register"));
return;
}
op->type = RNIND;
op->reg = num;
*ptr = src;
return;
}
else
{
/* must be a symbol */
*ptr =
skip_colonthing (exp_unsigned, src, op,
ispage ? ABS24 : ABS16, ABS8, ABS16, ABS24);
return;
}
}
if (*src == '#')
{
src++;
*ptr = skip_colonthing (exp_sandu, src, op, IMM16, IMM8, IMM16, ABS24);
return;
}
else
{
*ptr = skip_colonthing (exp_signed, src, op,
ispage ? ABS24 : PCREL8, PCREL8, PCREL16, ABS24);
}
}
static char *
get_operands (info, args, operand)
h8500_opcode_info *info;
char *args;
h8500_operand_info *operand;
{
char *ptr = args;
switch (info->nargs)
{
case 0:
operand[0].type = 0;
operand[1].type = 0;
break;
case 1:
ptr++;
get_operand (&ptr, operand + 0, info->name[0] == 'p');
operand[1].type = 0;
break;
case 2:
ptr++;
get_operand (&ptr, operand + 0, 0);
if (*ptr == ',')
ptr++;
get_operand (&ptr, operand + 1, 0);
break;
default:
abort ();
}
return ptr;
}
/* Passed a pointer to a list of opcodes which use different
addressing modes, return the opcode which matches the opcodes
provided. */
int pcrel8; /* Set when we've seen a pcrel operand */
static h8500_opcode_info *
get_specific (opcode, operands)
h8500_opcode_info *opcode;
h8500_operand_info *operands;
{
h8500_opcode_info *this_try = opcode;
int found = 0;
unsigned int noperands = opcode->nargs;
unsigned int this_index = opcode->idx;
while (this_index == opcode->idx && !found)
{
unsigned int i;
this_try = opcode++;
/* look at both operands needed by the opcodes and provided by
the user*/
for (i = 0; i < noperands; i++)
{
h8500_operand_info *user = operands + i;
switch (this_try->arg_type[i])
{
case FPIND_D8:
/* Opcode needs (disp:8,fp) */
if (user->type == RNIND_D8 && user->reg == 6)
{
displacement = user->exp;
continue;
}
break;
case RDIND_D16:
if (user->type == RNIND_D16)
{
displacement = user->exp;
rd = user->reg;
continue;
}
break;
case RDIND_D8:
if (user->type == RNIND_D8)
{
displacement = user->exp;
rd = user->reg;
continue;
}
break;
case RNIND_D16:
case RNIND_D8:
if (user->type == this_try->arg_type[i])
{
displacement = user->exp;
rn = user->reg;
continue;
}
break;
case SPDEC:
if (user->type == RNDEC && user->reg == 7)
{
continue;
}
break;
case SPINC:
if (user->type == RNINC && user->reg == 7)
{
continue;
}
break;
case ABS16:
if (user->type == ABS16)
{
absolute = user->exp;
continue;
}
break;
case ABS8:
if (user->type == ABS8)
{
absolute = user->exp;
continue;
}
break;
case ABS24:
if (user->type == ABS24)
{
absolute = user->exp;
continue;
}
break;
case CRB:
if ((user->type == CRB || user->type == CR) && user->reg != 0)
{
crb = user->reg;
continue;
}
break;
case CRW:
if ((user->type == CRW || user->type == CR) && user->reg == 0)
{
crw = user->reg;
continue;
}
break;
case DISP16:
if (user->type == DISP16)
{
displacement = user->exp;
continue;
}
break;
case DISP8:
if (user->type == DISP8)
{
displacement = user->exp;
continue;
}
break;
case FP:
if (user->type == RN && user->reg == 6)
{
continue;
}
break;
case PCREL16:
if (user->type == PCREL16)
{
displacement = user->exp;
continue;
}
break;
case PCREL8:
if (user->type == PCREL8)
{
displacement = user->exp;
pcrel8 = 1;
continue;
}
break;
case IMM16:
if (user->type == IMM16
|| user->type == IMM8)
{
immediate_inpage = user->page;
immediate = user->exp;
continue;
}
break;
case RLIST:
case IMM8:
if (user->type == IMM8)
{
immediate_inpage = user->page;
immediate = user->exp;
continue;
}
break;
case IMM4:
if (user->type == IMM8)
{
immediate_inpage = user->page;
immediate = user->exp;
continue;
}
break;
case QIM:
if (user->type == IMM8
&& user->exp.X_op == O_constant
&&
(user->exp.X_add_number == -2
|| user->exp.X_add_number == -1
|| user->exp.X_add_number == 1
|| user->exp.X_add_number == 2))
{
immediate_inpage = user->page;
immediate = user->exp;
continue;
}
break;
case RD:
if (user->type == RN)
{
rd = user->reg;
continue;
}
break;
case RS:
if (user->type == RN)
{
rs = user->reg;
continue;
}
break;
case RDIND:
if (user->type == RNIND)
{
rd = user->reg;
continue;
}
break;
case RNINC:
case RNIND:
case RNDEC:
case RN:
if (user->type == this_try->arg_type[i])
{
rn = user->reg;
continue;
}
break;
case SP:
if (user->type == RN && user->reg == 7)
{
continue;
}
break;
default:
printf (_("unhandled %d\n"), this_try->arg_type[i]);
break;
}
/* If we get here this didn't work out */
goto fail;
}
found = 1;
fail:;
}
if (found)
return this_try;
else
return 0;
}
int
check (operand, low, high)
expressionS *operand;
int low;
int high;
{
if (operand->X_op != O_constant
|| operand->X_add_number < low
|| operand->X_add_number > high)
{
as_bad (_("operand must be absolute in range %d..%d"), low, high);
}
return operand->X_add_number;
}
static void
insert (output, index, exp, reloc, pcrel)
char *output;
int index;
expressionS *exp;
int reloc;
int pcrel;
{
fix_new_exp (frag_now,
output - frag_now->fr_literal + index,
4, /* always say size is 4, but we know better */
exp,
pcrel,
reloc);
}
void
build_relaxable_instruction (opcode, operand)
h8500_opcode_info *opcode;
h8500_operand_info *operand;
{
/* All relaxable instructions start life as two bytes but can become
three bytes long if a lonely branch and up to 9 bytes if long
scb. */
char *p;
int len;
int type;
if (opcode->bytes[0].contents == 0x01)
{
type = SCB_F;
}
else if (opcode->bytes[0].contents == 0x06
|| opcode->bytes[0].contents == 0x07)
{
type = SCB_TST;
}
else
{
type = BRANCH;
}
p = frag_var (rs_machine_dependent,
md_relax_table[C (type, WORD_DISP)].rlx_length,
len = md_relax_table[C (type, BYTE_DISP)].rlx_length,
C (type, UNDEF_BYTE_DISP),
displacement.X_add_symbol,
displacement.X_add_number,
0);
p[0] = opcode->bytes[0].contents;
if (type != BRANCH)
{
p[1] = opcode->bytes[1].contents | rs;
}
}
/* Now we know what sort of opcodes it is, let's build the bytes. */
static void
build_bytes (opcode, operand)
h8500_opcode_info *opcode;
h8500_operand_info *operand;
{
int index;
if (pcrel8)
{
pcrel8 = 0;
build_relaxable_instruction (opcode, operand);
}
else
{
char *output = frag_more (opcode->length);
memset (output, 0, opcode->length);
for (index = 0; index < opcode->length; index++)
{
output[index] = opcode->bytes[index].contents;
switch (opcode->bytes[index].insert)
{
default:
printf (_("failed for %d\n"), opcode->bytes[index].insert);
break;
case 0:
break;
case RN:
output[index] |= rn;
break;
case RD:
case RDIND:
output[index] |= rd;
break;
case RS:
output[index] |= rs;
break;
case DISP16:
insert (output, index, &displacement, R_H8500_IMM16, 0);
index++;
break;
case DISP8:
case FPIND_D8:
insert (output, index, &displacement, R_H8500_IMM8, 0);
break;
case IMM16:
{
int p;
switch (immediate_inpage)
{
case 'p':
p = R_H8500_HIGH16;
break;
case 'h':
p = R_H8500_HIGH16;
break;
default:
p = R_H8500_IMM16;
break;
}
insert (output, index, &immediate, p, 0);
}
index++;
break;
case RLIST:
case IMM8:
if (immediate_inpage)
insert (output, index, &immediate, R_H8500_HIGH8, 0);
else
insert (output, index, &immediate, R_H8500_IMM8, 0);
break;
case PCREL16:
insert (output, index, &displacement, R_H8500_PCREL16, 1);
index++;
break;
case PCREL8:
insert (output, index, &displacement, R_H8500_PCREL8, 1);
break;
case IMM4:
output[index] |= check (&immediate, 0, 15);
break;
case CR:
output[index] |= cr;
if (cr == 0)
output[0] |= 0x8;
else
output[0] &= ~0x8;
break;
case CRB:
output[index] |= crb;
output[0] &= ~0x8;
break;
case CRW:
output[index] |= crw;
output[0] |= 0x8;
break;
case ABS24:
insert (output, index, &absolute, R_H8500_IMM24, 0);
index += 2;
break;
case ABS16:
insert (output, index, &absolute, R_H8500_IMM16, 0);
index++;
break;
case ABS8:
insert (output, index, &absolute, R_H8500_IMM8, 0);
break;
case QIM:
switch (immediate.X_add_number)
{
case -2:
output[index] |= 0x5;
break;
case -1:
output[index] |= 0x4;
break;
case 1:
output[index] |= 0;
break;
case 2:
output[index] |= 1;
break;
}
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 to. */
void
md_assemble (str)
char *str;
{
char *op_start;
char *op_end;
h8500_operand_info operand[2];
h8500_opcode_info *opcode;
h8500_opcode_info *prev_opcode;
char name[11];
int nlen = 0;
/* Drop leading whitespace. */
while (*str == ' ')
str++;
/* Find the op code end. */
for (op_start = op_end = str;
!is_end_of_line[(unsigned char) *op_end] && *op_end != ' ';
op_end++)
{
if ( /**op_end != '.'
&& *op_end != ':'
&& */ nlen < 10)
{
name[nlen++] = *op_end;
}
}
name[nlen] = 0;
if (op_end == op_start)
as_bad (_("can't find opcode "));
opcode = (h8500_opcode_info *) hash_find (opcode_hash_control, name);
if (opcode == NULL)
{
as_bad (_("unknown opcode"));
return;
}
get_operands (opcode, op_end, operand);
prev_opcode = opcode;
opcode = get_specific (opcode, operand);
if (opcode == 0)
{
/* Couldn't find an opcode which matched the operands */
char *where = frag_more (2);
where[0] = 0x0;
where[1] = 0x0;
as_bad (_("invalid operands for opcode"));
return;
}
build_bytes (opcode, operand);
}
void
tc_crawl_symbol_chain (headers)
object_headers *headers;
{
printf (_("call to tc_crawl_symbol_chain \n"));
}
symbolS *
md_undefined_symbol (name)
char *name;
{
return 0;
}
void
tc_headers_hook (headers)
object_headers *headers;
{
printf (_("call to tc_headers_hook \n"));
}
/* 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;
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;
}
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;
char *arg;
{
return 0;
}
void
md_show_usage (stream)
FILE *stream;
{
}
void
tc_aout_fix_to_chars ()
{
printf (_("call to tc_aout_fix_to_chars \n"));
abort ();
}
static void
wordify_scb (buffer, disp_size, inst_size)
char *buffer;
int *disp_size;
int *inst_size;
{
int rn = buffer[1] & 0x7;
switch (buffer[0])
{
case 0x0e: /* BSR */
case 0x20:
case 0x21:
case 0x22:
case 0x23:
case 0x24:
case 0x25:
case 0x26:
case 0x27:
case 0x28:
case 0x29:
case 0x2a:
case 0x2b:
case 0x2c:
case 0x2d:
case 0x2e:
case 0x2f:
buffer[0] |= 0x10;
buffer[1] = 0;
buffer[2] = 0;
*disp_size = 2;
*inst_size = 1;
return;
default:
abort ();
case 0x01:
*inst_size = 6;
*disp_size = 2;
break;
case 0x06:
*inst_size = 8;
*disp_size = 2;
*buffer++ = 0x26; /* bne + 8 */
*buffer++ = 0x08;
break;
case 0x07:
*inst_size = 8;
*disp_size = 2;
*buffer++ = 0x27; /* bne + 8 */
*buffer++ = 0x08;
break;
}
*buffer++ = 0xa8 | rn; /* addq -1,rn */
*buffer++ = 0x0c;
*buffer++ = 0x04; /* cmp #0xff:8, rn */
*buffer++ = 0xff;
*buffer++ = 0x70 | rn;
*buffer++ = 0x36; /* bne ... */
*buffer++ = 0;
*buffer++ = 0;
}
/* Called after relaxing, change the frags so they know how big they
are. */
void
md_convert_frag (headers, seg, fragP)
object_headers *headers;
segT seg;
fragS *fragP;
{
int disp_size = 0;
int inst_size = 0;
char *buffer = fragP->fr_fix + fragP->fr_literal;
switch (fragP->fr_subtype)
{
case C (BRANCH, BYTE_DISP):
disp_size = 1;
inst_size = 1;
break;
case C (SCB_F, BYTE_DISP):
case C (SCB_TST, BYTE_DISP):
disp_size = 1;
inst_size = 2;
break;
/* Branches to a known 16 bit displacement. */
/* Turn on the 16bit bit. */
case C (BRANCH, WORD_DISP):
case C (SCB_F, WORD_DISP):
case C (SCB_TST, WORD_DISP):
wordify_scb (buffer, &disp_size, &inst_size);
break;
case C (BRANCH, UNDEF_WORD_DISP):
case C (SCB_F, UNDEF_WORD_DISP):
case C (SCB_TST, UNDEF_WORD_DISP):
/* This tried to be relaxed, but didn't manage it, it now needs
a fix. */
wordify_scb (buffer, &disp_size, &inst_size);
/* Make a reloc */
fix_new (fragP,
fragP->fr_fix + inst_size,
4,
fragP->fr_symbol,
fragP->fr_offset,
0,
R_H8500_PCREL16);
fragP->fr_fix += disp_size + inst_size;
return;
break;
default:
abort ();
}
if (inst_size)
{
/* Get the address of the end of the instruction */
int next_inst = fragP->fr_fix + fragP->fr_address + disp_size + inst_size;
int targ_addr = (S_GET_VALUE (fragP->fr_symbol) +
fragP->fr_offset);
int disp = targ_addr - next_inst;
md_number_to_chars (buffer + inst_size, disp, disp_size);
fragP->fr_fix += disp_size + inst_size;
}
}
valueT
md_section_align (seg, size)
segT seg ;
valueT size;
{
return ((size + (1 << section_alignment[(int) seg]) - 1)
& (-1 << section_alignment[(int) seg]));
}
void
md_apply_fix3 (fixP, valP, seg)
fixS *fixP;
valueT * valP;
segT seg ATTRIBUTE_UNUSED;
{
long val = * (long *) valP;
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
if (fixP->fx_r_type == 0)
fixP->fx_r_type = fixP->fx_size == 4 ? R_H8500_IMM32 : R_H8500_IMM16;
switch (fixP->fx_r_type)
{
case R_H8500_IMM8:
case R_H8500_PCREL8:
*buf++ = val;
break;
case R_H8500_IMM16:
case R_H8500_LOW16:
case R_H8500_PCREL16:
*buf++ = (val >> 8);
*buf++ = val;
break;
case R_H8500_HIGH8:
*buf++ = val >> 16;
break;
case R_H8500_HIGH16:
*buf++ = val >> 24;
*buf++ = val >> 16;
break;
case R_H8500_IMM24:
*buf++ = (val >> 16);
*buf++ = (val >> 8);
*buf++ = val;
break;
case R_H8500_IMM32:
*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;
}
/* Called just before address relaxation, return the length
by which a fragment must grow to reach it's destination. */
int
md_estimate_size_before_relax (fragP, segment_type)
register fragS *fragP;
register segT segment_type;
{
int what;
switch (fragP->fr_subtype)
{
default:
abort ();
case C (BRANCH, UNDEF_BYTE_DISP):
case C (SCB_F, UNDEF_BYTE_DISP):
case C (SCB_TST, UNDEF_BYTE_DISP):
what = GET_WHAT (fragP->fr_subtype);
/* used to be a branch to somewhere which was unknown */
if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
{
/* Got a symbol and it's defined in this segment, become byte
sized - maybe it will fix up. */
fragP->fr_subtype = C (what, BYTE_DISP);
}
else
{
/* Its got a segment, but its not ours, so it will always be
long. */
fragP->fr_subtype = C (what, UNDEF_WORD_DISP);
}
break;
case C (BRANCH, BYTE_DISP):
case C (BRANCH, WORD_DISP):
case C (BRANCH, UNDEF_WORD_DISP):
case C (SCB_F, BYTE_DISP):
case C (SCB_F, WORD_DISP):
case C (SCB_F, UNDEF_WORD_DISP):
case C (SCB_TST, BYTE_DISP):
case C (SCB_TST, WORD_DISP):
case C (SCB_TST, UNDEF_WORD_DISP):
/* When relaxing a section for the second time, we don't need to
do anything besides return the current size. */
break;
}
return md_relax_table[fragP->fr_subtype].rlx_length;
}
/* 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;
{
return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
}
void
tc_coff_symbol_emit_hook (ignore)
symbolS *ignore;
{
}
short
tc_coff_fix2rtype (fix_ptr)
fixS *fix_ptr;
{
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:
return R_H8500_IMM16;
break;
case 1:
return R_H8500_IMM8;
break;
default:
abort ();
}
}
return fix_ptr->fx_r_type;
}
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_IMM16;
break;
case 1:
intr->r_type = R_IMM8;
break;
default:
abort ();
}
}
else
{
intr->r_type = fix_ptr->fx_r_type;
}
intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base;
intr->r_offset = fix_ptr->fx_offset;
/* Turn the segment of the symbol into an offset. */
if (symbol_ptr)
{
symbolS *dot;
dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
if (dot)
{
#if 0
intr->r_offset -=
segment_info[S_GET_SEGMENT (symbol_ptr)].scnhdr.s_paddr;
#endif
intr->r_offset += S_GET_VALUE (symbol_ptr);
intr->r_symndx = dot->sy_number;
}
else
{
intr->r_symndx = symbol_ptr->sy_number;
}
}
else
{
intr->r_symndx = -1;
}
}
int
start_label (ptr)
char *ptr;
{
/* Check for :s.w */
if (ISALPHA (ptr[1]) && ptr[2] == '.')
return 0;
/* Check for :s */
if (ISALPHA (ptr[1]) && !ISALPHA (ptr[2]))
return 0;
return 1;
}
int
tc_coff_sizemachdep (frag)
fragS *frag;
{
return md_relax_table[frag->fr_subtype].rlx_length;
}
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