binutils-gdb/bfd/cpu-i960.c

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/* BFD library support routines for the i960 architecture.
Copyright 1990, 1991, 1993, 1994, 1996, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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Hacked by Steve Chamberlain of Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
This program 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 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
static bfd_boolean scan_960_mach
PARAMS ((const bfd_arch_info_type *, const char *));
static const bfd_arch_info_type *compatible
PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
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/* This routine is provided a string, and tries to work out if it
could possibly refer to the i960 machine pointed at in the
info_struct pointer */
static bfd_boolean
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scan_960_mach (ap, string)
const bfd_arch_info_type *ap;
const char *string;
{
unsigned long machine;
int fail_because_not_80960 = FALSE;
/* Look for the string i960 at the front of the string. */
if (strncasecmp ("i960", string, 4) == 0)
{
string += 4;
/* i960 on it's own means core to us. */
if (* string == 0)
return ap->mach == bfd_mach_i960_core;
/* "i960:*" is valid, anything else is not. */
if (* string != ':')
return FALSE;
string ++;
}
/* In some bfds the cpu-id is written as "80960KA", "80960KB",
"80960CA" or "80960MC". */
else if (strncmp ("80960", string, 5) == 0)
{
string += 5;
/* Set this to TRUE here. If a correct matching postfix
is detected below it will be reset to FALSE. */
fail_because_not_80960 = TRUE;
}
/* No match, can't be us. */
else
return FALSE;
if (* string == '\0')
return FALSE;
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if (string[0] == 'c' && string[1] == 'o' && string[2] == 'r' &&
string[3] == 'e' && string[4] == '\0')
machine = bfd_mach_i960_core;
else if (strcasecmp (string, "ka_sa") == 0)
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machine = bfd_mach_i960_ka_sa;
else if (strcasecmp (string, "kb_sb") == 0)
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machine = bfd_mach_i960_kb_sb;
else if (string[1] == '\0' || string[2] != '\0') /* rest are 2-char. */
return FALSE;
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else if (string[0] == 'k' && string[1] == 'b')
{ machine = bfd_mach_i960_kb_sb; fail_because_not_80960 = FALSE; }
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else if (string[0] == 's' && string[1] == 'b')
machine = bfd_mach_i960_kb_sb;
else if (string[0] == 'm' && string[1] == 'c')
{ machine = bfd_mach_i960_mc; fail_because_not_80960 = FALSE; }
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else if (string[0] == 'x' && string[1] == 'a')
machine = bfd_mach_i960_xa;
else if (string[0] == 'c' && string[1] == 'a')
{ machine = bfd_mach_i960_ca; fail_because_not_80960 = FALSE; }
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else if (string[0] == 'k' && string[1] == 'a')
{ machine = bfd_mach_i960_ka_sa; fail_because_not_80960 = FALSE; }
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else if (string[0] == 's' && string[1] == 'a')
machine = bfd_mach_i960_ka_sa;
else if (string[0] == 'j' && string[1] == 'x')
machine = bfd_mach_i960_jx;
else if (string[0] == 'h' && string[1] == 'x')
machine = bfd_mach_i960_hx;
else
return FALSE;
if (fail_because_not_80960)
return FALSE;
if (machine == ap->mach)
return TRUE;
return FALSE;
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}
/* This routine is provided two arch_infos and works out the i960
machine which would be compatible with both and returns a pointer
to its info structure */
static const bfd_arch_info_type *
compatible (a,b)
const bfd_arch_info_type *a;
const bfd_arch_info_type *b;
{
/* The i960 has distinct subspecies which may not interbreed:
CORE CA
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CORE KA KB MC XA
CORE HX JX
Any architecture on the same line is compatible, the one on
the right is the least restrictive.
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We represent this information in an array, each machine to a side */
#define ERROR 0
#define CORE bfd_mach_i960_core /*1*/
#define KA bfd_mach_i960_ka_sa /*2*/
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#define KB bfd_mach_i960_kb_sb /*3*/
#define MC bfd_mach_i960_mc /*4*/
#define XA bfd_mach_i960_xa /*5*/
#define CA bfd_mach_i960_ca /*6*/
#define JX bfd_mach_i960_jx /*7*/
#define HX bfd_mach_i960_hx /*8*/
#define MAX_ARCH ((int)HX)
static const unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] =
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{
{ ERROR, CORE, KA, KB, MC, XA, CA, JX, HX },
{ CORE, CORE, KA, KB, MC, XA, CA, JX, HX },
{ KA, KA, KA, KB, MC, XA, ERROR, ERROR, ERROR},
{ KB, KB, KB, KB, MC, XA, ERROR, ERROR, ERROR},
{ MC, MC, MC, MC, MC, XA, ERROR, ERROR, ERROR},
{ XA, XA, XA, XA, XA, XA, ERROR, ERROR, ERROR},
{ CA, CA, ERROR, ERROR, ERROR, ERROR, CA, ERROR, ERROR},
{ JX, JX, ERROR, ERROR, ERROR, ERROR, ERROR, JX, HX },
{ HX, HX, ERROR, ERROR, ERROR, ERROR, ERROR, HX, HX },
};
if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR)
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{
return NULL;
}
else
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{
return (a->mach == matrix[a->mach][b->mach]) ? a : b;
}
}
#define N(a,b,d,n) \
{ 32, 32, 8,bfd_arch_i960,a,"i960",b,3,d,compatible,scan_960_mach,n,}
static const bfd_arch_info_type arch_info_struct[] =
{
N(bfd_mach_i960_ka_sa,"i960:ka_sa",FALSE, &arch_info_struct[1]),
N(bfd_mach_i960_kb_sb,"i960:kb_sb",FALSE, &arch_info_struct[2]),
N(bfd_mach_i960_mc, "i960:mc", FALSE, &arch_info_struct[3]),
N(bfd_mach_i960_xa, "i960:xa", FALSE, &arch_info_struct[4]),
N(bfd_mach_i960_ca, "i960:ca", FALSE, &arch_info_struct[5]),
N(bfd_mach_i960_jx, "i960:jx", FALSE, &arch_info_struct[6]),
N(bfd_mach_i960_hx, "i960:hx", FALSE, 0),
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};
const bfd_arch_info_type bfd_i960_arch =
N(bfd_mach_i960_core, "i960:core", TRUE, &arch_info_struct[0]);