/* GAS interface for targets using CGEN: Cpu tools GENerator.
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#include <setjmp.h>
#include "ansidecl.h"
#include "bfd.h"
+#include "symcat.h"
#include "cgen-opc.h"
#include "as.h"
#include "subsegs.h"
+#include "cgen.h"
/* Callback to insert a register into the symbol table.
A target may choose to let GAS parse the registers.
void
cgen_asm_record_register (name, number)
char * name;
- int number;
+ 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. */
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 [CGEN_MAX_FIXUPS];
+static int num_fixups;
/* Prepare to parse an instruction.
??? May wish to make this static and delete calls in md_assemble. */
/* Queue a fixup. */
-void
+static void
cgen_queue_fixup (opindex, opinfo, expP)
int opindex;
expressionS * expP;
{
/* We need to generate a fixup for this expression. */
- if (num_fixups >= MAX_FIXUPS)
- as_fatal ("too many fixups");
+ if (num_fixups >= CGEN_MAX_FIXUPS)
+ as_fatal (_("too many fixups"));
fixups[num_fixups].exp = * expP;
fixups[num_fixups].opindex = opindex;
fixups[num_fixups].opinfo = opinfo;
++ num_fixups;
}
+/* The following three functions allow a backup of the fixup chain to be made,
+ and to have this backup be swapped with the current chain. This allows
+ certain ports, eg the m32r, to swap two instructions and swap their fixups
+ at the same time. */
+static struct fixup saved_fixups [CGEN_MAX_FIXUPS];
+static int saved_num_fixups;
+
+void
+cgen_save_fixups ()
+{
+ saved_num_fixups = num_fixups;
+
+ memcpy (saved_fixups, fixups, sizeof (fixups[0]) * num_fixups);
+
+ num_fixups = 0;
+}
+
+void
+cgen_restore_fixups ()
+{
+ num_fixups = saved_num_fixups;
+
+ memcpy (fixups, saved_fixups, sizeof (fixups[0]) * num_fixups);
+
+ saved_num_fixups = 0;
+}
+
+void
+cgen_swap_fixups ()
+{
+ int tmp;
+ struct fixup tmp_fixup;
+
+ if (num_fixups == 0)
+ {
+ cgen_restore_fixups ();
+ }
+ else if (saved_num_fixups == 0)
+ {
+ cgen_save_fixups ();
+ }
+ else
+ {
+ tmp = saved_num_fixups;
+ saved_num_fixups = num_fixups;
+ num_fixups = tmp;
+
+ for (tmp = CGEN_MAX_FIXUPS; tmp--;)
+ {
+ tmp_fixup = saved_fixups [tmp];
+ saved_fixups [tmp] = fixups [tmp];
+ fixups [tmp] = tmp_fixup;
+ }
+ }
+}
+
/* Default routine to record a fixup.
This is a cover function to fix_new.
It exists because we record INSN with the fixup.
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_type want;
+ const char ** strP;
+ int opindex;
+ int opinfo;
enum cgen_parse_operand_result * resultP;
- bfd_vma * valueP;
+ bfd_vma * valueP;
{
#ifdef __STDC__
- /* These is volatile to survive the setjmp. */
- char * volatile hold;
+ /* These are volatile to survive the setjmp. */
+ 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)
{
switch (exp.X_op)
{
case O_illegal :
- errmsg = "illegal operand";
+ errmsg = _("illegal operand");
* resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
break;
case O_absent :
- errmsg = "missing operand";
+ errmsg = _("missing operand");
* resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
break;
case O_constant :
/* Finish assembling instruction INSN.
BUF contains what we've built up so far.
- LENGTH is the size of the insn in bits. */
+ LENGTH is the size of the insn in bits.
+ RELAX_P is non-zero if relaxable insns should be emitted as such.
+ Otherwise they're emitted in non-relaxable forms.
+ The "result" is stored in RESULT if non-NULL. */
void
-cgen_asm_finish_insn (insn, buf, length)
+cgen_asm_finish_insn (insn, buf, length, relax_p, result)
const CGEN_INSN * insn;
- cgen_insn_t * buf;
- unsigned int length;
+ cgen_insn_t * buf;
+ unsigned int length;
+ int relax_p;
+ finished_insnS * result;
{
- int i;
- int 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
a hook here. However, our caller is defined in tc-foo.c so there
shouldn't be a need for a hook. */
-
+
/* Write out the instruction.
It is important to fetch enough space in one call to `frag_more'.
We use (f - frag_now->fr_literal) to compute where we are and we
/* Is there a relaxable insn with the relaxable operand needing a fixup? */
relax_operand = -1;
- if (CGEN_INSN_ATTR (insn, CGEN_INSN_RELAXABLE) != 0)
+ if (relax_p && CGEN_INSN_ATTR (insn, CGEN_INSN_RELAXABLE) != 0)
{
/* Scan the fixups for the operand affected by relaxing
(i.e. the branch address). */
if (relax_operand != -1)
{
- int max_len;
+ int max_len;
fragS * old_frag;
#ifdef TC_CGEN_MAX_RELAX
/* 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 */,
old_frag->fr_cgen.insn = insn;
old_frag->fr_cgen.opindex = fixups[relax_operand].opindex;
old_frag->fr_cgen.opinfo = fixups[relax_operand].opinfo;
+ if (result)
+ result->frag = old_frag;
}
else
- f = frag_more (byte_len);
+ {
+ f = frag_more (byte_len);
+ if (result)
+ result->frag = frag_now;
+ }
/* If we're recording insns as numbers (rather than a string of bytes),
target byte order handling is deferred until now. */
/* Create any fixups. */
for (i = 0; i < num_fixups; ++i)
{
+ fixS * fixP;
+
/* Don't create fixups for these. That's done during relaxation.
We don't need to test for CGEN_INSN_RELAX as they can't get here
(see above). */
- if (CGEN_INSN_ATTR (insn, CGEN_INSN_RELAXABLE) != 0
+ if (relax_p
+ && CGEN_INSN_ATTR (insn, CGEN_INSN_RELAXABLE) != 0
&& CGEN_OPERAND_ATTR (& CGEN_SYM (operand_table) [fixups[i].opindex],
CGEN_OPERAND_RELAX) != 0)
continue;
#define md_cgen_record_fixup_exp cgen_record_fixup_exp
#endif
- md_cgen_record_fixup_exp (frag_now, f - frag_now->fr_literal,
- insn, length,
- & CGEN_SYM (operand_table) [fixups[i].opindex],
- fixups[i].opinfo,
- & fixups[i].exp);
+ fixP = md_cgen_record_fixup_exp (frag_now, f - frag_now->fr_literal,
+ insn, length,
+ & CGEN_SYM (operand_table) [fixups[i].opindex],
+ fixups[i].opinfo,
+ & fixups[i].exp);
+ if (result)
+ result->fixups[i] = fixP;
+ }
+
+ if (result)
+ {
+ result->num_fixups = num_fixups;
+ result->addr = f;
}
}
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
{
/* We don't actually support subtracting a symbol. */
as_bad_where (fixP->fx_file, fixP->fx_line,
- "expression too complex");
+ _("expression too complex"));
}
}
}
finish the job. Testing for pcrel is a temporary hack. */
|| fixP->fx_pcrel)
{
- /* 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_SYM (set_vma_operand) (opindex, & fields, (bfd_vma) value);
+ /* ??? 0 is passed for `pc' */
+ errmsg = CGEN_SYM (insert_operand) (opindex, & fields, where,
+ (bfd_vma) 0);
if (errmsg)
- as_warn_where (fixP->fx_file, fixP->fx_line, "%s\n", errmsg);
- CGEN_SYM (insert_operand) (opindex, & fields, where);
+ as_warn_where (fixP->fx_file, fixP->fx_line, "%s", errmsg);
}
if (fixP->fx_done)
else
{
as_bad_where (fixP->fx_file, fixP->fx_line,
- "unresolved expression that must be resolved");
+ _("unresolved expression that must be resolved"));
fixP->fx_done = 1;
return 1;
}
if (reloc->howto == (reloc_howto_type *) NULL)
{
as_bad_where (fixP->fx_file, fixP->fx_line,
- "internal error: can't export reloc type %d (`%s')",
+ _("internal error: can't export reloc type %d (`%s')"),
fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type));
return NULL;
}
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