/* GAS interface for targets using CGEN: Cpu tools GENerator.
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#include <setjmp.h>
#include "ansidecl.h"
+#include "libiberty.h"
#include "bfd.h"
-#include "cgen-opc.h"
+#include "symcat.h"
+#include "cgen-desc.h"
#include "as.h"
#include "subsegs.h"
+#include "cgen.h"
+
+/* Opcode table descriptor, must be set by md_begin. */
+
+CGEN_CPU_DESC gas_cgen_cpu_desc;
/* 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;
+ 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
expressionS exp;
};
-#define MAX_FIXUPS 5
-
-static struct fixup fixups[MAX_FIXUPS];
+static struct fixup fixups [GAS_CGEN_MAX_FIXUPS];
static int num_fixups;
/* Prepare to parse an instruction.
??? May wish to make this static and delete calls in md_assemble. */
void
-cgen_asm_init_parse ()
+gas_cgen_init_parse ()
{
num_fixups = 0;
}
/* Queue a fixup. */
-void
-cgen_queue_fixup (opindex, opinfo, expP)
- int opindex;
- expressionS *expP;
+static void
+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");
- fixups[num_fixups].exp = *expP;
+ if (num_fixups >= GAS_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;
+ 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. */
+/* ??? I think with cgen_asm_finish_insn (or something else) there is no
+ more need for this. */
+
+static struct fixup saved_fixups [GAS_CGEN_MAX_FIXUPS];
+static int saved_num_fixups;
+
+void
+gas_cgen_save_fixups ()
+{
+ saved_num_fixups = num_fixups;
+
+ memcpy (saved_fixups, fixups, sizeof (fixups[0]) * num_fixups);
+
+ num_fixups = 0;
+}
+
+void
+gas_cgen_restore_fixups ()
+{
+ num_fixups = saved_num_fixups;
+
+ memcpy (fixups, saved_fixups, sizeof (fixups[0]) * num_fixups);
+
+ saved_num_fixups = 0;
+}
+
+void
+gas_cgen_swap_fixups ()
+{
+ int tmp;
+ struct fixup tmp_fixup;
+
+ if (num_fixups == 0)
+ {
+ gas_cgen_restore_fixups ();
+ }
+ else if (saved_num_fixups == 0)
+ {
+ gas_cgen_save_fixups ();
+ }
+ else
+ {
+ tmp = saved_num_fixups;
+ saved_num_fixups = num_fixups;
+ num_fixups = tmp;
+
+ for (tmp = GAS_CGEN_MAX_FIXUPS; tmp--;)
+ {
+ tmp_fixup = saved_fixups [tmp];
+ saved_fixups [tmp] = fixups [tmp];
+ fixups [tmp] = tmp_fixup;
+ }
+ }
}
/* Default routine to record a fixup.
operand type. We pick a BFD reloc type in md_apply_fix. */
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;
+gas_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;
{
- 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. */
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.opinfo = opinfo;
+ CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR),
+ (bfd_reloc_code_real_type)
+ ((int) BFD_RELOC_UNUSED
+ + (int) operand->type));
+ fixP->fx_cgen.insn = insn;
+ fixP->fx_cgen.opinfo = opinfo;
return fixP;
}
operand type. We pick a BFD reloc type in md_apply_fix. */
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;
+gas_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;
{
- 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. */
fixP = fix_new_exp (frag, where, length / 8, exp,
- 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.opinfo = opinfo;
+ CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_PCREL_ADDR),
+ (bfd_reloc_code_real_type)
+ ((int) BFD_RELOC_UNUSED
+ + (int) operand->type));
+ fixP->fx_cgen.insn = insn;
+ fixP->fx_cgen.opinfo = opinfo;
return fixP;
}
The resulting value is stored in VALUEP. */
const char *
-cgen_parse_operand (want, strP, opindex, opinfo, resultP, valueP)
+gas_cgen_parse_operand (cd, want, strP, opindex, opinfo, resultP, valueP)
+ CGEN_CPU_DESC cd;
enum cgen_parse_operand_type want;
- const char **strP;
+ const char ** strP;
int opindex;
int opinfo;
- enum cgen_parse_operand_result *resultP;
- bfd_vma *valueP;
+ enum cgen_parse_operand_result * resultP;
+ bfd_vma * valueP;
{
#ifdef __STDC__
- /* These is volatile to survive the setjmp. */
+ /* 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;
+ const char * errmsg = NULL;
expressionS exp;
if (want == CGEN_PARSE_OPERAND_INIT)
{
- cgen_asm_init_parse ();
+ gas_cgen_init_parse ();
return NULL;
}
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. */
+ This is done via gas_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'. */
switch (exp.X_op)
{
case O_illegal :
- errmsg = "illegal operand";
- *resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
+ errmsg = _("illegal operand");
+ * resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
break;
case O_absent :
- errmsg = "missing operand";
- *resultP = CGEN_PARSE_OPERAND_RESULT_ERROR;
+ errmsg = _("missing operand");
+ * 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;
+ queue_fixup (opindex, opinfo, & exp);
+ * valueP = 0;
+ * resultP = CGEN_PARSE_OPERAND_RESULT_QUEUED;
break;
}
??? This could be done differently by adding code to `expression'. */
void
-cgen_md_operand (expressionP)
- expressionS *expressionP;
+gas_cgen_md_operand (expressionP)
+ expressionS * expressionP;
{
longjmp (expr_jmp_buf, 1);
}
/* 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)
- const CGEN_INSN *insn;
- cgen_insn_t *buf;
+gas_cgen_finish_insn (insn, buf, length, relax_p, result)
+ const CGEN_INSN * insn;
+ CGEN_INSN_BYTES_PTR buf;
unsigned int length;
+ int relax_p;
+ finished_insnS * result;
{
- 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
Relaxable instructions: We need to ensure we allocate enough
space for the largest insn. */
- if (CGEN_INSN_ATTR (insn, CGEN_INSN_RELAX) != 0)
+ if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX))
abort (); /* These currently shouldn't get here. */
/* 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_VALUE (insn, CGEN_INSN_RELAXABLE))
{
/* 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)
+ if (CGEN_OPERAND_ATTR_VALUE (cgen_operand_lookup_by_num (gas_cgen_cpu_desc, fixups[i].opindex),
+ CGEN_OPERAND_RELAX))
{
relax_operand = i;
break;
if (relax_operand != -1)
{
int max_len;
- fragS *old_frag;
+ fragS * old_frag;
#ifdef TC_CGEN_MAX_RELAX
max_len = TC_CGEN_MAX_RELAX (insn, byte_len);
/* 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 */,
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;
+ can use gas_cgen_md_record_fixup to record the appropriate reloc. */
+ 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;
+ 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. */
-#if 0 /*def CGEN_INT_INSN*/
- switch (length)
- {
- case 16:
- if (cgen_big_endian_p)
- bfd_putb16 ((bfd_vma) *buf, f);
- else
- bfd_putl16 ((bfd_vma) *buf, f);
- break;
- case 32:
- if (cgen_big_endian_p)
- bfd_putb32 ((bfd_vma) *buf, f);
- else
- bfd_putl32 ((bfd_vma) *buf, f);
- break;
- default:
- abort ();
- }
+#if CGEN_INT_INSN_P
+ cgen_put_insn_value (gas_cgen_cpu_desc, f, length, *buf);
#else
memcpy (f, buf, byte_len);
#endif
/* Create any fixups. */
for (i = 0; i < num_fixups; ++i)
{
+ fixS *fixP;
+ const CGEN_OPERAND *operand =
+ cgen_operand_lookup_by_num (gas_cgen_cpu_desc, fixups[i].opindex);
+
/* 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
- && CGEN_OPERAND_ATTR (& CGEN_SYM (operand_table) [fixups[i].opindex],
- CGEN_OPERAND_RELAX) != 0)
+ if (relax_p
+ && CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXABLE)
+ && CGEN_OPERAND_ATTR_VALUE (operand, CGEN_OPERAND_RELAX))
continue;
#ifndef md_cgen_record_fixup_exp
-#define md_cgen_record_fixup_exp cgen_record_fixup_exp
+#define md_cgen_record_fixup_exp gas_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, operand,
+ fixups[i].opinfo,
+ & fixups[i].exp);
+ if (result)
+ result->fixups[i] = fixP;
+ }
+
+ if (result)
+ {
+ result->num_fixups = num_fixups;
+ result->addr = f;
}
}
should handle them all. */
int
-cgen_md_apply_fix3 (fixP, valueP, seg)
- fixS *fixP;
- valueT *valueP;
- segT seg;
+gas_cgen_md_apply_fix3 (fixP, valueP, seg)
+ fixS * fixP;
+ valueT * valueP;
+ segT seg;
{
- char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
+ char * where = fixP->fx_frag->fr_literal + fixP->fx_where;
valueT value;
-
+ /* canonical name, since used a lot */
+ CGEN_CPU_DESC cd = gas_cgen_cpu_desc;
+
/* FIXME FIXME FIXME: The value we are passed in *valuep includes
the symbol values. Since we are using BFD_ASSEMBLER, if we are
doing this relocation the code in write.c is going to call
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;
{
/* We don't actually support subtracting a symbol. */
as_bad_where (fixP->fx_file, fixP->fx_line,
- "expression too complex");
+ _("expression too complex"));
}
}
}
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 CGEN_OPERAND *operand = cgen_operand_lookup_by_num (cd, 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 = alloca (CGEN_CPU_SIZEOF_FIELDS (cd));
+ const CGEN_INSN *insn = fixP->fx_cgen.insn;
/* If the reloc has been fully resolved finish the operand here. */
/* FIXME: This duplicates the capabilities of code in BFD. */
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_CPU_SET_FIELDS_BITSIZE (cd) (fields, CGEN_INSN_BITSIZE (insn));
+ CGEN_CPU_SET_VMA_OPERAND (cd) (cd, opindex, fields, (bfd_vma) value);
+
+#if CGEN_INT_INSN_P
+ {
+ CGEN_INSN_INT insn_value =
+ cgen_get_insn_value (cd, where, CGEN_INSN_BITSIZE (insn));
+
+ /* ??? 0 is passed for `pc' */
+ errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields,
+ &insn_value, (bfd_vma) 0);
+ cgen_put_insn_value (cd, where, CGEN_INSN_BITSIZE (insn),
+ insn_value);
+ }
+#else
+ /* ??? 0 is passed for `pc' */
+ errmsg = CGEN_CPU_INSERT_OPERAND (cd) (cd, opindex, fields, where,
+ (bfd_vma) 0);
+#endif
if (errmsg)
- as_warn_where (fixP->fx_file, fixP->fx_line, "%s\n", errmsg);
- CGEN_SYM (insert_operand) (opindex, &fields, where);
+ as_bad_where (fixP->fx_file, fixP->fx_line, "%s", errmsg);
}
if (fixP->fx_done)
bfd_install_relocation. Note that this doesn't work when
partial_inplace == false. */
- reloc_type = CGEN_SYM (lookup_reloc) (insn, operand, fixP);
+ reloc_type = md_cgen_lookup_reloc (insn, operand, fixP);
if (reloc_type != BFD_RELOC_NONE)
{
fixP->fx_r_type = reloc_type;
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;
}
break;
/* FIXME: later add support for 64 bits. */
default:
- abort ();
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("internal error: can't install fix for reloc type %d (`%s')"),
+ fixP->fx_r_type, bfd_get_reloc_code_name (fixP->fx_r_type));
+ break;
}
}
else
FIXME: To what extent can we get all relevant targets to use this? */
arelent *
-cgen_tc_gen_reloc (section, fixP)
- asection *section;
- fixS *fixP;
+gas_cgen_tc_gen_reloc (section, fixP)
+ asection * section;
+ fixS * fixP;
{
- arelent *reloc;
+ arelent * reloc;
- reloc = (arelent *) bfd_alloc (stdoutput, sizeof (arelent));
+ reloc = (arelent *) xmalloc (sizeof (arelent));
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type);
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;
}
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 = (asymbol **) xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);
+ /* Use fx_offset for these cases */
+ if ( fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY
+ || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT)
+ reloc->addend = fixP->fx_offset;
+ else
+ reloc->addend = fixP->fx_addnumber;
+
+ reloc->address = fixP->fx_frag->fr_address + fixP->fx_where;
return reloc;
}
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