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Add support for parallel instructions.

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This commit is contained in:
Nick Clifton 1998-01-15 01:58:34 +00:00
parent df5b318730
commit ebde3f6235
3 changed files with 429 additions and 228 deletions
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6
gas/ChangeLog
View File

@ -1,3 +1,9 @@
Wed Jan 14 17:52:33 1998 Nick Clifton <nickc@cygnus.com>
* config/tc-m32r.c (md_assemble): Add support for parsing parallel
instructions.
* cgen.c: Formatting changes to improve readability.
Wed Jan 14 15:41:41 1998 Jeffrey A Law (law@cygnus.com)
* config/tc-mips.c (macro): Rework division code to avoid unfilled

189
gas/cgen.c
View File

@ -30,13 +30,13 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
void
cgen_asm_record_register (name, number)
char *name;
int number;
char * name;
int number;
{
/* Use symbol_create here instead of symbol_new so we don't try to
output registers into the object file's symbol table. */
symbol_table_insert (symbol_create (name, reg_section,
number, &zero_address_frag));
number, & zero_address_frag));
}
/* We need to keep a list of fixups. We can't simply generate them as
@ -52,15 +52,15 @@ cgen_asm_record_register (name, number)
struct fixup
{
int opindex;
int opinfo;
int opindex;
int opinfo;
expressionS exp;
};
#define MAX_FIXUPS 5
static struct fixup fixups[MAX_FIXUPS];
static int num_fixups;
static struct fixup fixups [MAX_FIXUPS];
static int num_fixups;
/* Prepare to parse an instruction.
??? May wish to make this static and delete calls in md_assemble. */
@ -75,16 +75,16 @@ cgen_asm_init_parse ()
void
cgen_queue_fixup (opindex, opinfo, expP)
int opindex;
expressionS *expP;
int opindex;
expressionS * expP;
{
/* We need to generate a fixup for this expression. */
if (num_fixups >= MAX_FIXUPS)
as_fatal ("too many fixups");
fixups[num_fixups].exp = *expP;
fixups[num_fixups].exp = * expP;
fixups[num_fixups].opindex = opindex;
fixups[num_fixups].opinfo = opinfo;
++num_fixups;
fixups[num_fixups].opinfo = opinfo;
++ num_fixups;
}
/* Default routine to record a fixup.
@ -102,16 +102,16 @@ cgen_queue_fixup (opindex, opinfo, expP)
fixS *
cgen_record_fixup (frag, where, insn, length, operand, opinfo, symbol, offset)
fragS *frag;
int where;
const CGEN_INSN *insn;
int length;
const CGEN_OPERAND *operand;
int opinfo;
symbolS *symbol;
offsetT offset;
fragS * frag;
int where;
const CGEN_INSN * insn;
int length;
const CGEN_OPERAND * operand;
int opinfo;
symbolS * symbol;
offsetT offset;
{
fixS *fixP;
fixS * fixP;
/* It may seem strange to use operand->attrs and not insn->attrs here,
but it is the operand that has a pc relative relocation. */
@ -119,7 +119,7 @@ cgen_record_fixup (frag, where, insn, length, operand, opinfo, symbol, offset)
fixP = fix_new (frag, where, length / 8, symbol, offset,
CGEN_OPERAND_ATTR (operand, CGEN_OPERAND_PCREL_ADDR) != 0,
(bfd_reloc_code_real_type) ((int) BFD_RELOC_UNUSED + CGEN_OPERAND_INDEX (operand)));
fixP->tc_fix_data.insn = (PTR) insn;
fixP->tc_fix_data.insn = (PTR) insn;
fixP->tc_fix_data.opinfo = opinfo;
return fixP;
@ -140,15 +140,15 @@ cgen_record_fixup (frag, where, insn, length, operand, opinfo, symbol, offset)
fixS *
cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
fragS *frag;
int where;
const CGEN_INSN *insn;
int length;
const CGEN_OPERAND *operand;
int opinfo;
expressionS *exp;
fragS * frag;
int where;
const CGEN_INSN * insn;
int length;
const CGEN_OPERAND * operand;
int opinfo;
expressionS * exp;
{
fixS *fixP;
fixS * fixP;
/* It may seem strange to use operand->attrs and not insn->attrs here,
but it is the operand that has a pc relative relocation. */
@ -178,23 +178,23 @@ static jmp_buf expr_jmp_buf;
const char *
cgen_parse_operand (want, strP, opindex, opinfo, resultP, valueP)
enum cgen_parse_operand_type want;
const char **strP;
int opindex;
int opinfo;
enum cgen_parse_operand_result *resultP;
bfd_vma *valueP;
enum cgen_parse_operand_type want;
const char ** strP;
int opindex;
int opinfo;
enum cgen_parse_operand_result * resultP;
bfd_vma * valueP;
{
#ifdef __STDC__
/* These is volatile to survive the setjmp. */
char * volatile hold;
char * volatile hold;
enum cgen_parse_operand_result * volatile resultP_1;
#else
static char *hold;
static enum cgen_parse_operand_result *resultP_1;
static char * hold;
static enum cgen_parse_operand_result * resultP_1;
#endif
const char *errmsg = NULL;
expressionS exp;
const char * errmsg = NULL;
expressionS exp;
if (want == CGEN_PARSE_OPERAND_INIT)
{
@ -204,20 +204,20 @@ cgen_parse_operand (want, strP, opindex, opinfo, resultP, valueP)
resultP_1 = resultP;
hold = input_line_pointer;
input_line_pointer = (char *) *strP;
input_line_pointer = (char *) * strP;
/* We rely on md_operand to longjmp back to us.
This is done via cgen_md_operand. */
if (setjmp (expr_jmp_buf) != 0)
{
input_line_pointer = (char *) hold;
*resultP_1 = CGEN_PARSE_OPERAND_RESULT_ERROR;
* resultP_1 = CGEN_PARSE_OPERAND_RESULT_ERROR;
return "illegal operand";
}
expression (&exp);
expression (& exp);
*strP = input_line_pointer;
* strP = input_line_pointer;
input_line_pointer = hold;
/* FIXME: Need to check `want'. */
@ -226,24 +226,24 @@ cgen_parse_operand (want, strP, opindex, opinfo, resultP, valueP)
{
case O_illegal :
errmsg = "illegal operand";
*resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
* resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
break;
case O_absent :
errmsg = "missing operand";
*resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
* resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
break;
case O_constant :
*valueP = exp.X_add_number;
*resultP = CGEN_PARSE_OPERAND_RESULT_NUMBER;
* valueP = exp.X_add_number;
* resultP = CGEN_PARSE_OPERAND_RESULT_NUMBER;
break;
case O_register :
*valueP = exp.X_add_number;
*resultP = CGEN_PARSE_OPERAND_RESULT_REGISTER;
* valueP = exp.X_add_number;
* resultP = CGEN_PARSE_OPERAND_RESULT_REGISTER;
break;
default :
cgen_queue_fixup (opindex, opinfo, &exp);
*valueP = 0;
*resultP = CGEN_PARSE_OPERAND_RESULT_QUEUED;
cgen_queue_fixup (opindex, opinfo, & exp);
* valueP = 0;
* resultP = CGEN_PARSE_OPERAND_RESULT_QUEUED;
break;
}
@ -257,7 +257,7 @@ cgen_parse_operand (want, strP, opindex, opinfo, resultP, valueP)
void
cgen_md_operand (expressionP)
expressionS *expressionP;
expressionS * expressionP;
{
longjmp (expr_jmp_buf, 1);
}
@ -268,12 +268,13 @@ cgen_md_operand (expressionP)
void
cgen_asm_finish_insn (insn, buf, length)
const CGEN_INSN *insn;
cgen_insn_t *buf;
unsigned int length;
const CGEN_INSN * insn;
cgen_insn_t * buf;
unsigned int length;
{
int i, relax_operand;
char *f;
int i;
int relax_operand;
char * f;
unsigned int byte_len = length / 8;
/* ??? Target foo issues various warnings here, so one might want to provide
@ -299,7 +300,7 @@ cgen_asm_finish_insn (insn, buf, length)
/* Scan the fixups for the operand affected by relaxing
(i.e. the branch address). */
for (i = 0; i < num_fixups; ++i)
for (i = 0; i < num_fixups; ++ i)
{
if (CGEN_OPERAND_ATTR (& CGEN_SYM (operand_table) [fixups[i].opindex],
CGEN_OPERAND_RELAX) != 0)
@ -312,8 +313,8 @@ cgen_asm_finish_insn (insn, buf, length)
if (relax_operand != -1)
{
int max_len;
fragS *old_frag;
int max_len;
fragS * old_frag;
#ifdef TC_CGEN_MAX_RELAX
max_len = TC_CGEN_MAX_RELAX (insn, byte_len);
@ -323,10 +324,13 @@ cgen_asm_finish_insn (insn, buf, length)
/* Ensure variable part and fixed part are in same fragment. */
/* FIXME: Having to do this seems like a hack. */
frag_grow (max_len);
/* Allocate space for the fixed part. */
f = frag_more (byte_len);
/* Create a relaxable fragment for this instruction. */
old_frag = frag_now;
frag_var (rs_machine_dependent,
max_len - byte_len /* max chars */,
0 /* variable part already allocated */,
@ -336,11 +340,12 @@ cgen_asm_finish_insn (insn, buf, length)
fixups[relax_operand].exp.X_add_symbol,
fixups[relax_operand].exp.X_add_number,
f);
/* Record the operand number with the fragment so md_convert_frag
can use cgen_md_record_fixup to record the appropriate reloc. */
old_frag->fr_cgen.insn = insn;
old_frag->fr_cgen.insn = insn;
old_frag->fr_cgen.opindex = fixups[relax_operand].opindex;
old_frag->fr_cgen.opinfo = fixups[relax_operand].opinfo;
old_frag->fr_cgen.opinfo = fixups[relax_operand].opinfo;
}
else
f = frag_more (byte_len);
@ -352,15 +357,15 @@ cgen_asm_finish_insn (insn, buf, length)
{
case 16:
if (cgen_big_endian_p)
bfd_putb16 ((bfd_vma) *buf, f);
bfd_putb16 ((bfd_vma) * buf, f);
else
bfd_putl16 ((bfd_vma) *buf, f);
bfd_putl16 ((bfd_vma) * buf, f);
break;
case 32:
if (cgen_big_endian_p)
bfd_putb32 ((bfd_vma) *buf, f);
bfd_putb32 ((bfd_vma) * buf, f);
else
bfd_putl32 ((bfd_vma) *buf, f);
bfd_putl32 ((bfd_vma) * buf, f);
break;
default:
abort ();
@ -388,7 +393,7 @@ cgen_asm_finish_insn (insn, buf, length)
insn, length,
& CGEN_SYM (operand_table) [fixups[i].opindex],
fixups[i].opinfo,
&fixups[i].exp);
& fixups[i].exp);
}
}
@ -406,12 +411,12 @@ cgen_asm_finish_insn (insn, buf, length)
int
cgen_md_apply_fix3 (fixP, valueP, seg)
fixS *fixP;
valueT *valueP;
segT seg;
fixS * fixP;
valueT * valueP;
segT seg;
{
char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
valueT value;
char * where = fixP->fx_frag->fr_literal + fixP->fx_where;
valueT value;
/* FIXME FIXME FIXME: The value we are passed in *valuep includes
the symbol values. Since we are using BFD_ASSEMBLER, if we are
@ -426,11 +431,11 @@ cgen_md_apply_fix3 (fixP, valueP, seg)
if (fixP->fx_addsy == (symbolS *) NULL)
{
value = *valueP;
value = * valueP;
fixP->fx_done = 1;
}
else if (fixP->fx_pcrel)
value = *valueP;
value = * valueP;
else
{
value = fixP->fx_offset;
@ -449,12 +454,12 @@ cgen_md_apply_fix3 (fixP, valueP, seg)
if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
{
int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
const CGEN_OPERAND *operand = & CGEN_SYM (operand_table) [opindex];
const char *errmsg;
int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
const CGEN_OPERAND * operand = & CGEN_SYM (operand_table) [opindex];
const char * errmsg;
bfd_reloc_code_real_type reloc_type;
CGEN_FIELDS fields;
const CGEN_INSN *insn = (CGEN_INSN *) fixP->tc_fix_data.insn;
CGEN_FIELDS fields;
const CGEN_INSN * insn = (CGEN_INSN *) fixP->tc_fix_data.insn;
/* If the reloc has been fully resolved finish the operand here. */
/* FIXME: This duplicates the capabilities of code in BFD. */
@ -465,12 +470,12 @@ cgen_md_apply_fix3 (fixP, valueP, seg)
{
/* This may seem like overkill, and using bfd_install_relocation or
some such may be preferable, but this is simple. */
CGEN_FIELDS_BITSIZE (&fields) = CGEN_INSN_BITSIZE (insn);
CGEN_SYM (set_operand) (opindex, &value, &fields);
errmsg = CGEN_SYM (validate_operand) (opindex, &fields);
CGEN_FIELDS_BITSIZE (& fields) = CGEN_INSN_BITSIZE (insn);
CGEN_SYM (set_operand) (opindex, & value, & fields);
errmsg = CGEN_SYM (validate_operand) (opindex, & fields);
if (errmsg)
as_warn_where (fixP->fx_file, fixP->fx_line, "%s\n", errmsg);
CGEN_SYM (insert_operand) (opindex, &fields, where);
CGEN_SYM (insert_operand) (opindex, & fields, where);
}
if (fixP->fx_done)
@ -533,10 +538,10 @@ cgen_md_apply_fix3 (fixP, valueP, seg)
arelent *
cgen_tc_gen_reloc (section, fixP)
asection *section;
fixS *fixP;
asection * section;
fixS * fixP;
{
arelent *reloc;
arelent * reloc;
reloc = (arelent *) bfd_alloc (stdoutput, sizeof (arelent));
@ -551,9 +556,9 @@ cgen_tc_gen_reloc (section, fixP)
assert (!fixP->fx_pcrel == !reloc->howto->pc_relative);
reloc->sym_ptr_ptr = &fixP->fx_addsy->bsym;
reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
reloc->addend = fixP->fx_addnumber;
reloc->sym_ptr_ptr = & fixP->fx_addsy->bsym;
reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
reloc->addend = fixP->fx_addnumber;
return reloc;
}

462
gas/config/tc-m32r.c
View File

@ -24,9 +24,12 @@
#include "subsegs.h"
#include "cgen-opc.h"
#include "../../opcodes/m32r-asm.c"
#include "../../opcodes/m32r-asm.in"
/* Non-null if last insn was a 16 bit insn on a 32 bit boundary
(i.e. was the first of two 16 bit insns). */
static const CGEN_INSN *prev_insn = NULL;
static const CGEN_INSN * prev_insn = NULL;
/* Non-zero if we've seen a relaxable insn since the last 32 bit
alignment request. */
@ -40,25 +43,24 @@ static int m32r_relax;
/* If non-NULL, pointer to cpu description file to read.
This allows runtime additions to the assembler. */
static char *m32r_cpu_desc;
static char * m32r_cpu_desc;
/* start-sanitize-m32rx */
/* Non-zero if -m32rx has been specified, in which case support for the
extended M32RX instruction set should be enabled. */
/* Indicates the target BFD machine number. */
static int enable_m32rx = 0;
/* end-sanitize-m32rx */
/* stuff for .scomm symbols. */
static segT sbss_section;
static segT sbss_section;
static asection scom_section;
static asymbol scom_symbol;
static asymbol scom_symbol;
const char comment_chars[] = ";";
const char line_comment_chars[] = "#";
const char comment_chars[] = ";";
const char line_comment_chars[] = "#";
const char line_separator_chars[] = "";
const char EXP_CHARS[] = "eE";
const char FLT_CHARS[] = "dD";
const char EXP_CHARS[] = "eE";
const char FLT_CHARS[] = "dD";
/* Relocations against symbols are done in two
parts, with a HI relocation and a LO relocation. Each relocation
@ -73,17 +75,15 @@ const char FLT_CHARS[] = "dD";
struct m32r_hi_fixup
{
/* Next HI fixup. */
struct m32r_hi_fixup *next;
/* This fixup. */
fixS *fixp;
/* The section this fixup is in. */
segT seg;
struct m32r_hi_fixup * next; /* Next HI fixup. */
fixS * fixp; /* This fixup. */
segT seg; /* The section this fixup is in. */
};
/* The list of unmatched HI relocs. */
static struct m32r_hi_fixup *m32r_hi_fixup_list;
static struct m32r_hi_fixup * m32r_hi_fixup_list;
static void m32r_record_hi16 PARAMS ((int, fixS *, segT seg));
@ -95,11 +95,12 @@ allow_m32rx (int on)
enable_m32rx = on;
if (stdoutput != NULL)
bfd_set_arch_mach (stdoutput, TARGET_ARCH, enable_m32rx ? bfd_mach_m32rx : bfd_mach_m32r);
bfd_set_arch_mach (stdoutput, TARGET_ARCH,
enable_m32rx ? bfd_mach_m32rx : bfd_mach_m32r);
}
/* end-sanitize-m32rx */
const char *md_shortopts = "";
const char * md_shortopts = "";
struct option md_longopts[] =
{
@ -117,12 +118,12 @@ struct option md_longopts[] =
{NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof(md_longopts);
size_t md_longopts_size = sizeof (md_longopts);
int
md_parse_option (c, arg)
int c;
char *arg;
int c;
char * arg;
{
switch (c)
{
@ -148,7 +149,7 @@ md_parse_option (c, arg)
void
md_show_usage (stream)
FILE *stream;
FILE * stream;
{
fprintf (stream, "M32R/X options:\n");
/* start-sanitize-m32rx */
@ -195,12 +196,12 @@ const pseudo_typeS md_pseudo_table[] =
int
m32r_do_align (n, fill, len, max)
int n;
const char *fill;
int len;
int max;
int n;
const char * fill;
int len;
int max;
{
if ((fill == NULL || (*fill == 0 && len == 1))
if ((fill == NULL || (* fill == 0 && len == 1))
&& (now_seg->flags & SEC_CODE) != 0
/* Only do this special handling if aligning to at least a
4 byte boundary. */
@ -224,7 +225,8 @@ m32r_do_align (n, fill, len, max)
nops. */
if (n > 2)
{
static const unsigned char multi_nop_pattern[] = { 0x70, 0x00, 0xf0, 0x00 };
static const unsigned char multi_nop_pattern[] =
{ 0x70, 0x00, 0xf0, 0x00 };
frag_align_pattern (n, multi_nop_pattern, sizeof multi_nop_pattern,
max ? max - 2 : 0);
}
@ -238,7 +240,7 @@ static void
assemble_nop (opcode)
int opcode;
{
char *f = frag_more (2);
char * f = frag_more (2);
md_number_to_chars (f, opcode, 2);
}
@ -269,17 +271,21 @@ int
m32r_fill_insn (done)
int done;
{
segT seg;
segT seg;
subsegT subseg;
if (prev_seg != NULL)
{
seg = now_seg;
seg = now_seg;
subseg = now_subseg;
subseg_set (prev_seg, prev_subseg);
fill_insn (0);
subseg_set (seg, subseg);
}
return 1;
}
@ -287,22 +293,24 @@ void
md_begin ()
{
flagword applicable;
segT seg;
subsegT subseg;
segT seg;
subsegT subseg;
/* Initialize the `cgen' interface. */
/* This is a callback from cgen to gas to parse operands. */
cgen_parse_operand_fn = cgen_parse_operand;
/* Set the machine number and endian. */
CGEN_SYM (init_asm) (0 /* mach number */,
target_big_endian ? CGEN_ENDIAN_BIG : CGEN_ENDIAN_LITTLE);
target_big_endian ?
CGEN_ENDIAN_BIG : CGEN_ENDIAN_LITTLE);
#if 0 /* not supported yet */
/* If a runtime cpu description file was provided, parse it. */
if (m32r_cpu_desc != NULL)
{
const char *errmsg;
const char * errmsg;
errmsg = cgen_read_cpu_file (m32r_cpu_desc);
if (errmsg != NULL)
@ -311,15 +319,17 @@ md_begin ()
#endif
/* Save the current subseg so we can restore it [it's the default one and
we don't want the initial section to be .sbss. */
seg = now_seg;
we don't want the initial section to be .sbss]. */
seg = now_seg;
subseg = now_subseg;
/* The sbss section is for local .scomm symbols. */
sbss_section = subseg_new (".sbss", 0);
/* This is copied from perform_an_assembly_pass. */
applicable = bfd_applicable_section_flags (stdoutput);
bfd_set_section_flags (stdoutput, sbss_section, applicable & SEC_ALLOC);
#if 0 /* What does this do? [see perform_an_assembly_pass] */
seg_info (bss_section)->bss = 1;
#endif
@ -328,51 +338,221 @@ md_begin ()
/* We must construct a fake section similar to bfd_com_section
but with the name .scommon. */
scom_section = bfd_com_section;
scom_section.name = ".scommon";
scom_section.output_section = &scom_section;
scom_section.symbol = &scom_symbol;
scom_section.symbol_ptr_ptr = &scom_section.symbol;
scom_symbol = *bfd_com_section.symbol;
scom_symbol.name = ".scommon";
scom_symbol.section = &scom_section;
scom_section = bfd_com_section;
scom_section.name = ".scommon";
scom_section.output_section = & scom_section;
scom_section.symbol = & scom_symbol;
scom_section.symbol_ptr_ptr = & scom_section.symbol;
scom_symbol = * bfd_com_section.symbol;
scom_symbol.name = ".scommon";
scom_symbol.section = & scom_section;
/* start-sanitize-m32rx */
allow_m32rx (enable_m32rx);
/* end-sanitize-m32rx */
}
/* Returns non zero if the given instruction writes to a destination register. */
static int
writes_to_dest_reg (insn)
const CGEN_INSN * insn;
{
unsigned char * syntax = CGEN_SYNTAX_STRING (CGEN_INSN_SYNTAX (insn));
unsigned char c;
/* Scan the syntax string looking for a destination register. */
while ((c = (* syntax ++)) != 0)
if (c == 128 + M32R_OPERAND_DR)
break;
return c;
}
/* Returns an integer representing the destination register of
the given insn, or -1 if the insn has no destination. */
static int
get_dest_reg (insn)
const CGEN_INSN * insn;
{
/* XXX to be done. */
return -1;
}
void
md_assemble (str)
char *str;
char * str;
{
#ifdef CGEN_INT_INSN
cgen_insn_t buffer[CGEN_MAX_INSN_SIZE / sizeof (cgen_insn_t)];
cgen_insn_t buffer [CGEN_MAX_INSN_SIZE / sizeof (cgen_insn_t)];
cgen_insn_t prev_buffer [CGEN_MAX_INSN_SIZE / sizeof (cgen_insn_t)];
#else
char buffer[CGEN_MAX_INSN_SIZE];
char buffer [CGEN_MAX_INSN_SIZE];
char prev_buffer [CGEN_MAX_INSN_SIZE];
#endif
CGEN_FIELDS fields;
const CGEN_INSN *insn;
char *errmsg;
CGEN_FIELDS fields;
CGEN_FIELDS prev_fields;
const CGEN_INSN * insn;
char * errmsg;
char * str2 = NULL;
int is_parallel = false;
/* Initialize GAS's cgen interface for a new instruction. */
cgen_asm_init_parse ();
insn = CGEN_SYM (assemble_insn) (str, &fields, buffer, &errmsg);
/* Look for a parallel instruction seperator. */
if ((str2 = strstr (str, "||")) != NULL)
{
char * str3;
* str2 = 0; /* Seperate the two instructions. */
/* If there was a previous 16 bit insn, then fill the following 16 bit slot,
so that the parallel instruction will start on a 32 bit boundary. */
if (prev_insn)
fill_insn (0);
/* Assemble the first instruction. */
prev_insn = CGEN_SYM (assemble_insn) (str, & prev_fields, prev_buffer, & errmsg);
if (! prev_insn)
{
as_bad (errmsg);
return;
}
/* Check to see if this is an allowable parallel insn. */
if (CGEN_INSN_ATTR (prev_insn, CGEN_INSN_PIPE) == PIPE_NONE)
{
as_bad ("instruction '%s' cannot be executed in parallel.", str);
return;
}
/* start-sanitize-m32rx */
if (! enable_m32rx &&
CGEN_INSN_ATTR (prev_insn, CGEN_INSN_MACH) == MACH_M32RX)
{
as_bad ("instruction '%s' is for the M32RX only", str);
return;
}
/* end-sanitize-m32rx */
/* fixups = fixups->next; */
*str2 = '|'; /* Restore the original assembly text, just in case it is needed. */
str3 = str; /* Save the original string pointer. */
str = str2 + 2; /* Advanced past the parsed string. */
str2 = str3; /* Remember the entire string in case it is needed for error messages. */
is_parallel = true;
}
insn = CGEN_SYM (assemble_insn) (str, & fields, buffer, & errmsg);
if (!insn)
{
as_bad (errmsg);
return;
}
if (CGEN_INSN_BITSIZE (insn) == 32)
/* start-sanitize-m32rx */
if (! enable_m32rx
&& CGEN_INSN_ATTR (insn, CGEN_INSN_MACH) == (1 << MACH_M32RX))
{
as_bad ("instruction '%s' is for the M32RX only", str);
return;
}
/* end-sanitize-m32rx */
if (is_parallel)
{
/* start-sanitize-m32rx */
if (! enable_m32rx)
{
if (strcmp (prev_insn->name, "nop") != 0
&& strcmp (insn->name, "nop") != 0)
{
as_bad ("'%s': only the NOP instruction can be issued in parallel on the m32r", str2);
return;
}
}
/* end-sanitize-m32rx */
/* Check to see if this is an allowable parallel insn. */
if (CGEN_INSN_ATTR (insn, CGEN_INSN_PIPE) == PIPE_NONE)
{
as_bad ("instruction '%s', cannot be executed in parallel.", str);
return;
}
/* Check to see that the two instructions can be placed in parallel. */
if ((CGEN_INSN_ATTR (insn, CGEN_INSN_PIPE) == CGEN_INSN_ATTR (prev_insn, CGEN_INSN_PIPE))
&& (CGEN_INSN_ATTR (insn, CGEN_INSN_PIPE) != PIPE_OS))
{
as_bad ("'%s': both instructions use the same execution pipeline", str2);
return;
}
#if 0
/* Check that the instructions do not write to the same destination register. */
if (writes_to_dest_reg (insn)
&& writes_to_dest_reg (prev_insn) /* This test is actually redundant. */
&& get_dest_reg (insn) == get_dest_reg (prev_insn))
{
as_bad ("'%s': both instructions write to the same destination register", str2);
return;
}
#endif
/* Force the top bit of the second insn to be set. */
#if 0 /*def CGEN_INT_INSN*/
#define MAKE_PARALLEL(insn) ((insn) |= 0x8000)
switch (CGEN_FIELDS_BITSIZE (& fields))
{
bfd_vma value;
case 16:
if (CGEN_CURRENT_ENDIAN == CGEN_ENDIAN_BIG)
{
value = bfd_getb16 ((bfd_vma) * buffer);
MAKE_PARALLEL (value);
bfd_putb16 (value, buffer);
}
else
{
value = bfd_getl16 ((bfd_vma) * buffer);
MAKE_PARALLEL (value);
bfd_putl16 (value, buffer);
}
break;
default:
abort ();
}
#else
#define MAKE_PARALLEL(insn) ((insn) |= 0x80)
MAKE_PARALLEL (buffer [CGEN_CURRENT_ENDIAN == CGEN_ENDIAN_BIG ? 0 : 1]);
#endif
/* Generate the parallel instructions */
cgen_asm_finish_insn (prev_insn, prev_buffer, CGEN_FIELDS_BITSIZE (& prev_fields));
cgen_asm_finish_insn (insn, buffer, CGEN_FIELDS_BITSIZE (& fields));
/* If prev_ins is relaxable (and insn is not), then swap them, so that the test
after the end of this if-then-else section will work. */
if (CGEN_INSN_ATTR (prev_insn, CGEN_INSN_RELAXABLE))
insn = prev_insn;
/* Clear the prev_insn variable, since it only used if the insn was the first
16 bit insn in a 32 bit word. */
prev_insn = NULL;
}
else if (CGEN_INSN_BITSIZE (insn) == 32)
{
/* 32 bit insns must live on 32 bit boundaries. */
/* FIXME: If calling fill_insn too many times turns us into a memory
pig, can we call assemble_nop instead of !seen_relaxable_p? */
if (prev_insn || seen_relaxable_p)
fill_insn (0);
cgen_asm_finish_insn (insn, buffer, CGEN_FIELDS_BITSIZE (&fields));
{
/* FIXME: If calling fill_insn too many times turns us into a memory
pig, can we call assemble_nop instead of !seen_relaxable_p? */
fill_insn (0);
}
cgen_asm_finish_insn (insn, buffer, CGEN_FIELDS_BITSIZE (& fields));
}
else
{
@ -382,7 +562,8 @@ md_assemble (str)
prev_insn = NULL;
else
prev_insn = insn;
cgen_asm_finish_insn (insn, buffer, CGEN_FIELDS_BITSIZE (&fields));
cgen_asm_finish_insn (insn, buffer, CGEN_FIELDS_BITSIZE (& fields));
/* If the insn needs the following one to be on a 32 bit boundary
(e.g. subroutine calls), fill this insn's slot. */
@ -398,7 +579,7 @@ md_assemble (str)
seen_relaxable_p = 1;
/* Set these so m32r_fill_insn can use them. */
prev_seg = now_seg;
prev_seg = now_seg;
prev_subseg = now_subseg;
}
@ -407,18 +588,18 @@ md_assemble (str)
void
md_operand (expressionP)
expressionS *expressionP;
expressionS * expressionP;
{
if (*input_line_pointer == '#')
if (* input_line_pointer == '#')
{
input_line_pointer++;
input_line_pointer ++;
expression (expressionP);
}
}
valueT
md_section_align (segment, size)
segT segment;
segT segment;
valueT size;
{
int align = bfd_get_section_alignment (stdoutput, segment);
@ -427,7 +608,7 @@ md_section_align (segment, size)
symbolS *
md_undefined_symbol (name)
char *name;
char * name;
{
return 0;
}
@ -443,22 +624,22 @@ static void
m32r_scomm (ignore)
int ignore;
{
register char *name;
register char c;
register char *p;
offsetT size;
register symbolS *symbolP;
offsetT align;
int align2;
register char * name;
register char c;
register char * p;
offsetT size;
register symbolS * symbolP;
offsetT align;
int align2;
name = input_line_pointer;
c = get_symbol_end ();
/* just after name is now '\0' */
p = input_line_pointer;
*p = c;
* p = c;
SKIP_WHITESPACE ();
if (*input_line_pointer != ',')
if (* input_line_pointer != ',')
{
as_bad ("Expected comma after symbol-name: rest of line ignored.");
ignore_rest_of_line ();
@ -474,11 +655,11 @@ m32r_scomm (ignore)
}
/* The third argument to .scomm is the alignment. */
if (*input_line_pointer != ',')
if (* input_line_pointer != ',')
align = 8;
else
{
++input_line_pointer;
++ input_line_pointer;
align = get_absolute_expression ();
if (align <= 0)
{
@ -489,7 +670,7 @@ m32r_scomm (ignore)
/* Convert to a power of 2 alignment. */
if (align)
{
for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2)
for (align2 = 0; (align & 1) == 0; align >>= 1, ++ align2)
continue;
if (align != 1)
{
@ -501,9 +682,9 @@ m32r_scomm (ignore)
else
align2 = 0;
*p = 0;
* p = 0;
symbolP = symbol_find_or_make (name);
*p = c;
* p = c;
if (S_IS_DEFINED (symbolP))
{
@ -526,9 +707,9 @@ m32r_scomm (ignore)
if (symbolP->local)
{
segT old_sec = now_seg;
int old_subsec = now_subseg;
char *pfrag;
segT old_sec = now_seg;
int old_subsec = now_subseg;
char * pfrag;
record_alignment (sbss_section, align2);
subseg_set (sbss_section, 0);
@ -539,7 +720,7 @@ m32r_scomm (ignore)
symbolP->sy_frag = frag_now;
pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
(char *) 0);
*pfrag = 0;
* pfrag = 0;
S_SET_SIZE (symbolP, size);
S_SET_SEGMENT (symbolP, sbss_section);
S_CLEAR_EXTERNAL (symbolP);
@ -588,8 +769,8 @@ const relax_typeS md_relax_table[] =
long
m32r_relax_frag (fragP, stretch)
fragS *fragP;
long stretch;
fragS * fragP;
long stretch;
{
/* Address of branch insn. */
long address = fragP->fr_address + fragP->fr_fix - 2;
@ -640,11 +821,11 @@ m32r_relax_frag (fragP, stretch)
int
md_estimate_size_before_relax (fragP, segment)
fragS *fragP;
segT segment;
fragS * fragP;
segT segment;
{
int old_fr_fix = fragP->fr_fix;
char *opcode = fragP->fr_opcode;
int old_fr_fix = fragP->fr_fix;
char * opcode = fragP->fr_opcode;
/* The only thing we have to handle here are symbols outside of the
current segment. They may be undefined or in a different segment in
@ -678,8 +859,8 @@ md_estimate_size_before_relax (fragP, segment)
frag_wane (fragP);
#else
{
const CGEN_INSN *insn;
int i;
const CGEN_INSN * insn;
int i;
/* Update the recorded insn.
Fortunately we don't have to look very far.
@ -717,8 +898,12 @@ md_convert_frag (abfd, sec, fragP)
segT sec;
fragS *fragP;
{
char *opcode, *displacement;
int target_address, opcode_address, extension, addend;
char * opcode;
char * displacement;
int target_address;
int opcode_address;
int extension;
int addend;
opcode = fragP->fr_opcode;
@ -729,19 +914,19 @@ md_convert_frag (abfd, sec, fragP)
{
case 1 :
extension = 0;
displacement = &opcode[1];
displacement = & opcode[1];
break;
case 2 :
opcode[0] |= 0x80;
extension = 2;
displacement = &opcode[1];
displacement = & opcode[1];
break;
case 3 :
opcode[2] = opcode[0] | 0x80;
md_number_to_chars (opcode, PAR_NOP_INSN, 2);
opcode_address += 2;
extension = 4;
displacement = &opcode[3];
displacement = & opcode[3];
break;
default :
abort ();
@ -799,8 +984,8 @@ md_convert_frag (abfd, sec, fragP)
long
md_pcrel_from_section (fixP, sec)
fixS *fixP;
segT sec;
fixS * fixP;
segT sec;
{
if (fixP->fx_addsy != (symbolS *) NULL
&& (! S_IS_DEFINED (fixP->fx_addsy)
@ -820,9 +1005,9 @@ md_pcrel_from_section (fixP, sec)
bfd_reloc_code_real_type
CGEN_SYM (lookup_reloc) (insn, operand, fixP)
const CGEN_INSN *insn;
const CGEN_OPERAND *operand;
fixS *fixP;
const CGEN_INSN * insn;
const CGEN_OPERAND * operand;
fixS * fixP;
{
switch (CGEN_OPERAND_TYPE (operand))
{
@ -846,16 +1031,16 @@ CGEN_SYM (lookup_reloc) (insn, operand, fixP)
fixS *
m32r_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
fragS *frag;
int where;
const CGEN_INSN *insn;
int length;
const CGEN_OPERAND *operand;
int opinfo;
expressionS *exp;
fragS * frag;
int where;
const CGEN_INSN * insn;
int length;
const CGEN_OPERAND * operand;
int opinfo;
expressionS * exp;
{
fixS *fixP = cgen_record_fixup_exp (frag, where, insn, length,
operand, opinfo, exp);
fixS * fixP = cgen_record_fixup_exp (frag, where, insn, length,
operand, opinfo, exp);
switch (CGEN_OPERAND_TYPE (operand))
{
@ -874,11 +1059,11 @@ m32r_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp)
static void
m32r_record_hi16 (reloc_type, fixP, seg)
int reloc_type;
fixS *fixP;
segT seg;
int reloc_type;
fixS * fixP;
segT seg;
{
struct m32r_hi_fixup *hi_fixup;
struct m32r_hi_fixup * hi_fixup;
assert (reloc_type == BFD_RELOC_M32R_HI16_SLO
|| reloc_type == BFD_RELOC_M32R_HI16_ULO);
@ -886,8 +1071,9 @@ m32r_record_hi16 (reloc_type, fixP, seg)
hi_fixup = ((struct m32r_hi_fixup *)
xmalloc (sizeof (struct m32r_hi_fixup)));
hi_fixup->fixp = fixP;
hi_fixup->seg = now_seg;
hi_fixup->seg = now_seg;
hi_fixup->next = m32r_hi_fixup_list;
m32r_hi_fixup_list = hi_fixup;
}
@ -903,12 +1089,12 @@ m32r_record_hi16 (reloc_type, fixP, seg)
void
m32r_frob_file ()
{
struct m32r_hi_fixup *l;
struct m32r_hi_fixup * l;
for (l = m32r_hi_fixup_list; l != NULL; l = l->next)
{
segment_info_type *seginfo;
int pass;
segment_info_type * seginfo;
int pass;
assert (FX_OPINFO_R_TYPE (l->fixp) == BFD_RELOC_M32R_HI16_SLO
|| FX_OPINFO_R_TYPE (l->fixp) == BFD_RELOC_M32R_HI16_ULO);
@ -928,7 +1114,8 @@ m32r_frob_file ()
seginfo = seg_info (l->seg);
for (pass = 0; pass < 2; pass++)
{
fixS *f, *prev;
fixS * f;
fixS * prev;
prev = NULL;
for (f = seginfo->fix_root; f != NULL; f = f->fx_next)
@ -944,15 +1131,15 @@ m32r_frob_file ()
|| prev->fx_addsy != f->fx_addsy
|| prev->fx_offset != f->fx_offset))
{
fixS **pf;
fixS ** pf;
/* Move l->fixp before f. */
for (pf = &seginfo->fix_root;
*pf != l->fixp;
pf = &(*pf)->fx_next)
assert (*pf != NULL);
* pf != l->fixp;
pf = & (* pf)->fx_next)
assert (* pf != NULL);
*pf = l->fixp->fx_next;
* pf = l->fixp->fx_next;
l->fixp->fx_next = f;
if (prev == NULL)
@ -982,7 +1169,7 @@ m32r_frob_file ()
int
m32r_force_relocation (fix)
fixS *fix;
fixS * fix;
{
if (! m32r_relax)
return 0;
@ -995,9 +1182,9 @@ m32r_force_relocation (fix)
void
md_number_to_chars (buf, val, n)
char *buf;
char * buf;
valueT val;
int n;
int n;
{
if (target_big_endian)
number_to_chars_bigendian (buf, val, n);
@ -1019,11 +1206,12 @@ md_atof (type, litP, sizeP)
char *litP;
int *sizeP;
{
int i,prec;
LITTLENUM_TYPE words[MAX_LITTLENUMS];
LITTLENUM_TYPE *wordP;
char *t;
char *atof_ieee ();
int i;
int prec;
LITTLENUM_TYPE words [MAX_LITTLENUMS];
LITTLENUM_TYPE * wordP;
char * t;
char * atof_ieee ();
switch (type)
{
@ -1044,20 +1232,21 @@ md_atof (type, litP, sizeP)
/* FIXME: Some targets allow other format chars for bigger sizes here. */
default:
*sizeP = 0;
* 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);
* sizeP = prec * sizeof (LITTLENUM_TYPE);
if (target_big_endian)
{
for (i = 0; i < prec; i++)
{
md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE));
md_number_to_chars (litP, (valueT) words[i],
sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
}
@ -1065,7 +1254,8 @@ md_atof (type, litP, sizeP)
{
for (i = prec - 1; i >= 0; i--)
{
md_number_to_chars (litP, (valueT) words[i], sizeof (LITTLENUM_TYPE));
md_number_to_chars (litP, (valueT) words[i],
sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
}