2006-02-17 15:36:28 +01:00
|
|
|
/* tc-xc16x.c -- Assembler for the Infineon XC16X.
|
2009-07-24 13:45:01 +02:00
|
|
|
Copyright 2006, 2007, 2009 Free Software Foundation, Inc.
|
2006-02-17 15:36:28 +01:00
|
|
|
Contributed by KPIT Cummins Infosystems
|
|
|
|
|
|
|
|
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
|
2007-07-03 13:01:12 +02:00
|
|
|
the Free Software Foundation; either version 3, or (at your option)
|
2006-02-17 15:36:28 +01:00
|
|
|
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, 51 Franklin Street - Fifth Floor, Boston, MA
|
|
|
|
02110-1301, USA. */
|
|
|
|
|
|
|
|
|
|
|
|
#include "as.h"
|
|
|
|
#include "safe-ctype.h"
|
|
|
|
#include "subsegs.h"
|
|
|
|
#include "symcat.h"
|
|
|
|
#include "opcodes/xc16x-desc.h"
|
|
|
|
#include "opcodes/xc16x-opc.h"
|
|
|
|
#include "cgen.h"
|
|
|
|
#include "dwarf2dbg.h"
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef OBJ_ELF
|
|
|
|
#include "elf/xc16x.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Structure to hold all of the different components describing
|
|
|
|
an individual instruction. */
|
|
|
|
typedef struct
|
|
|
|
{
|
|
|
|
const CGEN_INSN * insn;
|
|
|
|
const CGEN_INSN * orig_insn;
|
|
|
|
CGEN_FIELDS fields;
|
|
|
|
#if CGEN_INT_INSN_P
|
|
|
|
CGEN_INSN_INT buffer [1];
|
|
|
|
#define INSN_VALUE(buf) (*(buf))
|
|
|
|
#else
|
|
|
|
unsigned char buffer [CGEN_MAX_INSN_SIZE];
|
|
|
|
#define INSN_VALUE(buf) (buf)
|
|
|
|
#endif
|
|
|
|
char * addr;
|
|
|
|
fragS * frag;
|
|
|
|
int num_fixups;
|
|
|
|
fixS * fixups [GAS_CGEN_MAX_FIXUPS];
|
|
|
|
int indices [MAX_OPERAND_INSTANCES];
|
|
|
|
}
|
|
|
|
xc16x_insn;
|
|
|
|
|
|
|
|
const char comment_chars[] = ";";
|
|
|
|
const char line_comment_chars[] = "#";
|
|
|
|
const char line_separator_chars[] = "";
|
|
|
|
const char EXP_CHARS[] = "eE";
|
|
|
|
const char FLT_CHARS[] = "dD";
|
|
|
|
|
|
|
|
#define XC16X_SHORTOPTS ""
|
|
|
|
const char * md_shortopts = XC16X_SHORTOPTS;
|
|
|
|
|
|
|
|
struct option md_longopts[] =
|
|
|
|
{
|
|
|
|
{NULL, no_argument, NULL, 0}
|
|
|
|
};
|
|
|
|
size_t md_longopts_size = sizeof (md_longopts);
|
|
|
|
|
|
|
|
static void
|
|
|
|
xc16xlmode (int arg ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
if (stdoutput != NULL)
|
|
|
|
if (!bfd_set_arch_mach (stdoutput, bfd_arch_xc16x, bfd_mach_xc16xl))
|
|
|
|
as_warn (_("could not set architecture and machine"));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
xc16xsmode (int arg ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
if (!bfd_set_arch_mach (stdoutput, bfd_arch_xc16x, bfd_mach_xc16xs))
|
|
|
|
as_warn (_("could not set architecture and machine"));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
xc16xmode (int arg ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
if (!bfd_set_arch_mach (stdoutput, bfd_arch_xc16x, bfd_mach_xc16x))
|
|
|
|
as_warn (_("could not set architecture and machine"));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* The target specific pseudo-ops which we support. */
|
|
|
|
const pseudo_typeS md_pseudo_table[] =
|
|
|
|
{
|
|
|
|
{ "word", cons, 2 },
|
|
|
|
{"xc16xl", xc16xlmode, 0},
|
|
|
|
{"xc16xs", xc16xsmode, 0},
|
|
|
|
{"xc16x", xc16xmode, 0},
|
|
|
|
{ NULL, NULL, 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
void
|
|
|
|
md_begin (void)
|
|
|
|
{
|
|
|
|
/* Initialize the `cgen' interface. */
|
|
|
|
|
|
|
|
/* Set the machine number and endian. */
|
|
|
|
gas_cgen_cpu_desc = xc16x_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0,
|
|
|
|
CGEN_CPU_OPEN_ENDIAN,
|
|
|
|
CGEN_ENDIAN_LITTLE,
|
|
|
|
CGEN_CPU_OPEN_END);
|
|
|
|
xc16x_cgen_init_asm (gas_cgen_cpu_desc);
|
|
|
|
|
|
|
|
/* This is a callback from cgen to gas to parse operands. */
|
|
|
|
cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_assemble (char *str)
|
|
|
|
{
|
|
|
|
xc16x_insn insn;
|
|
|
|
char *errmsg;
|
|
|
|
|
|
|
|
/* Initialize GAS's cgen interface for a new instruction. */
|
|
|
|
gas_cgen_init_parse ();
|
|
|
|
|
|
|
|
insn.insn = xc16x_cgen_assemble_insn
|
|
|
|
(gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, & errmsg);
|
|
|
|
|
|
|
|
if (!insn.insn)
|
|
|
|
{
|
2009-07-24 13:45:01 +02:00
|
|
|
as_bad ("%s", errmsg);
|
2006-02-17 15:36:28 +01:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Doesn't really matter what we pass for RELAX_P here. */
|
|
|
|
gas_cgen_finish_insn (insn.insn, insn.buffer,
|
|
|
|
CGEN_FIELDS_BITSIZE (& insn.fields), 1, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return the bfd reloc type for OPERAND of INSN at fixup FIXP.
|
|
|
|
Returns BFD_RELOC_NONE if no reloc type can be found.
|
|
|
|
*FIXP may be modified if desired. */
|
|
|
|
|
|
|
|
bfd_reloc_code_real_type
|
|
|
|
md_cgen_lookup_reloc (const CGEN_INSN *insn ATTRIBUTE_UNUSED,
|
|
|
|
const CGEN_OPERAND *operand,
|
|
|
|
fixS *fixP)
|
|
|
|
{
|
|
|
|
switch (operand->type)
|
|
|
|
{
|
|
|
|
case XC16X_OPERAND_REL:
|
|
|
|
fixP->fx_where += 1;
|
|
|
|
fixP->fx_pcrel = 1;
|
|
|
|
return BFD_RELOC_8_PCREL;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_CADDR:
|
|
|
|
fixP->fx_where += 2;
|
|
|
|
return BFD_RELOC_16;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_UIMM7:
|
|
|
|
fixP->fx_where += 1;
|
|
|
|
fixP->fx_pcrel = 1;
|
|
|
|
return BFD_RELOC_8_PCREL;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_UIMM16:
|
|
|
|
case XC16X_OPERAND_MEMORY:
|
|
|
|
fixP->fx_where += 2;
|
|
|
|
return BFD_RELOC_16;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_UPOF16:
|
|
|
|
fixP->fx_where += 2;
|
|
|
|
return BFD_RELOC_XC16X_POF;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_UPAG16:
|
|
|
|
fixP->fx_where += 2;
|
|
|
|
return BFD_RELOC_XC16X_PAG;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_USEG8:
|
|
|
|
fixP->fx_where += 1;
|
|
|
|
return BFD_RELOC_XC16X_SEG;
|
|
|
|
|
|
|
|
case XC16X_OPERAND_USEG16:
|
|
|
|
case XC16X_OPERAND_USOF16:
|
|
|
|
fixP->fx_where += 2;
|
|
|
|
return BFD_RELOC_XC16X_SOF;
|
|
|
|
|
2007-10-18 13:01:24 +02:00
|
|
|
default : /* Avoid -Wall warning. */
|
2006-02-17 15:36:28 +01:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
fixP->fx_where += 2;
|
|
|
|
return BFD_RELOC_XC16X_SOF;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Write a value out to the object file, using the appropriate endianness. */
|
|
|
|
|
|
|
|
void
|
|
|
|
md_number_to_chars (char * buf, valueT val, int n)
|
|
|
|
{
|
|
|
|
number_to_chars_littleendian (buf, val, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_show_usage (FILE * stream)
|
|
|
|
{
|
|
|
|
fprintf (stream, _(" XC16X specific command line options:\n"));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
md_parse_option (int c ATTRIBUTE_UNUSED,
|
|
|
|
char *arg ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
char *
|
|
|
|
md_atof (int type, char *litP, int *sizeP)
|
|
|
|
{
|
2007-10-17 18:45:56 +02:00
|
|
|
return ieee_md_atof (type, litP, sizeP, FALSE);
|
2006-02-17 15:36:28 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
valueT
|
|
|
|
md_section_align (segT segment, valueT size)
|
|
|
|
{
|
|
|
|
int align = bfd_get_section_alignment (stdoutput, segment);
|
|
|
|
return ((size + (1 << align) - 1) & (-1 << align));
|
|
|
|
}
|
|
|
|
|
|
|
|
symbolS *
|
|
|
|
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED,
|
|
|
|
segT segment_type ATTRIBUTE_UNUSED)
|
|
|
|
{
|
2007-10-18 13:01:24 +02:00
|
|
|
printf (_("call to md_estimate_size_before_relax \n"));
|
2006-02-17 15:36:28 +01:00
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
long
|
|
|
|
md_pcrel_from (fixS *fixP)
|
|
|
|
{
|
|
|
|
long temp_val;
|
|
|
|
temp_val=fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
|
|
|
|
|
|
|
|
return temp_val;
|
|
|
|
}
|
|
|
|
|
|
|
|
long
|
|
|
|
md_pcrel_from_section (fixS *fixP, segT sec)
|
|
|
|
{
|
|
|
|
if (fixP->fx_addsy != (symbolS *) NULL
|
|
|
|
&& (! S_IS_DEFINED (fixP->fx_addsy)
|
|
|
|
|| S_GET_SEGMENT (fixP->fx_addsy) != sec
|
|
|
|
|| S_IS_EXTERNAL (fixP->fx_addsy)
|
|
|
|
|| S_IS_WEAK (fixP->fx_addsy)))
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return md_pcrel_from (fixP);
|
|
|
|
}
|
|
|
|
|
|
|
|
arelent *
|
|
|
|
tc_gen_reloc (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,
|
2007-10-18 13:01:24 +02:00
|
|
|
_("Difference of symbols in different sections is not supported"));
|
2006-02-17 15:36:28 +01:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
rel = xmalloc (sizeof (arelent));
|
|
|
|
rel->sym_ptr_ptr = 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));
|
2007-10-18 13:01:24 +02:00
|
|
|
fflush (stderr);
|
2006-02-17 15:36:28 +01:00
|
|
|
#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;
|
|
|
|
}
|
|
|
|
|
|
|
|
return rel;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
|
|
|
|
{
|
2007-10-18 13:01:24 +02:00
|
|
|
if (!strstr (seg->name,".debug"))
|
2006-02-17 15:36:28 +01:00
|
|
|
{
|
|
|
|
if (*valP < 128)
|
|
|
|
*valP /= 2;
|
|
|
|
if (*valP>268435455)
|
|
|
|
{
|
|
|
|
*valP = *valP * (-1);
|
|
|
|
*valP /= 2;
|
|
|
|
*valP = 256 - (*valP);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
gas_cgen_md_apply_fix (fixP, valP, seg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
md_convert_frag (bfd *headers ATTRIBUTE_UNUSED,
|
|
|
|
segT seg ATTRIBUTE_UNUSED,
|
|
|
|
fragS *fragP ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
printf (_("call to md_convert_frag \n"));
|
|
|
|
abort ();
|
|
|
|
}
|