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/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
Copyright 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GDB.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "regcache.h"
#include "mn10300-tdep.h"
#include "gdb_assert.h"
#include "bfd.h"
#include "elf-bfd.h"
#include "osabi.h"
#include "regset.h"
#include "solib-svr4.h"
#include <stdlib.h>
/* Transliterated from <asm-mn10300/elf.h>... */
#define MN10300_ELF_NGREG 28
#define MN10300_ELF_NFPREG 32
typedef gdb_byte mn10300_elf_greg_t[4];
typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG];
typedef gdb_byte mn10300_elf_fpreg_t[4];
typedef struct
{
mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG];
gdb_byte fpcr[4];
} mn10300_elf_fpregset_t;
/* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */
#define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0
#define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1
#define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2
#define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3
#define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4
#define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5
#define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6
#define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7
#define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8
#define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9
#define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10
#define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11
#define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12
#define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13
#define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14
#define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15
#define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16
#define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17
#define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18
#define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19
#define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20
#define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21
#define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22
#define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23
#define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24
#define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25
#define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26
/* New gdbarch API for corefile registers.
Given a section name and size, create a struct reg object
with a supply_register and a collect_register method. */
/* Copy register value of REGNUM from regset to regcache.
If REGNUM is -1, do this for all gp registers in regset. */
static void
am33_supply_gregset_method (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
char zerobuf[MAX_REGISTER_SIZE];
const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs;
int i;
gdb_assert (len == sizeof (mn10300_elf_gregset_t));
switch (regnum) {
case E_D0_REGNUM:
regcache_raw_supply (regcache, E_D0_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
break;
case E_D1_REGNUM:
regcache_raw_supply (regcache, E_D1_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
break;
case E_D2_REGNUM:
regcache_raw_supply (regcache, E_D2_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
break;
case E_D3_REGNUM:
regcache_raw_supply (regcache, E_D3_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
break;
case E_A0_REGNUM:
regcache_raw_supply (regcache, E_A0_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
break;
case E_A1_REGNUM:
regcache_raw_supply (regcache, E_A1_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
break;
case E_A2_REGNUM:
regcache_raw_supply (regcache, E_A2_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
break;
case E_A3_REGNUM:
regcache_raw_supply (regcache, E_A3_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
break;
case E_SP_REGNUM:
regcache_raw_supply (regcache, E_SP_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
break;
case E_PC_REGNUM:
regcache_raw_supply (regcache, E_PC_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
break;
case E_MDR_REGNUM:
regcache_raw_supply (regcache, E_MDR_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
break;
case E_PSW_REGNUM:
regcache_raw_supply (regcache, E_PSW_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
break;
case E_LIR_REGNUM:
regcache_raw_supply (regcache, E_LIR_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
break;
case E_LAR_REGNUM:
regcache_raw_supply (regcache, E_LAR_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
break;
case E_MDRQ_REGNUM:
regcache_raw_supply (regcache, E_MDRQ_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
break;
case E_E0_REGNUM:
regcache_raw_supply (regcache, E_E0_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
break;
case E_E1_REGNUM:
regcache_raw_supply (regcache, E_E1_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
break;
case E_E2_REGNUM:
regcache_raw_supply (regcache, E_E2_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
break;
case E_E3_REGNUM:
regcache_raw_supply (regcache, E_E3_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
break;
case E_E4_REGNUM:
regcache_raw_supply (regcache, E_E4_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
break;
case E_E5_REGNUM:
regcache_raw_supply (regcache, E_E5_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
break;
case E_E6_REGNUM:
regcache_raw_supply (regcache, E_E6_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
break;
case E_E7_REGNUM:
regcache_raw_supply (regcache, E_E7_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
break;
/* ssp, msp, and usp are inaccessible. */
case E_E8_REGNUM:
memset (zerobuf, 0, MAX_REGISTER_SIZE);
regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf);
break;
case E_E9_REGNUM:
memset (zerobuf, 0, MAX_REGISTER_SIZE);
regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf);
break;
case E_E10_REGNUM:
memset (zerobuf, 0, MAX_REGISTER_SIZE);
regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf);
break;
case E_MCRH_REGNUM:
regcache_raw_supply (regcache, E_MCRH_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
break;
case E_MCRL_REGNUM:
regcache_raw_supply (regcache, E_MCRL_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
break;
case E_MCVF_REGNUM:
regcache_raw_supply (regcache, E_MCVF_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
break;
case E_FPCR_REGNUM:
/* FPCR is numbered among the GP regs, but handled as an FP reg.
Do nothing. */
break;
case E_FPCR_REGNUM + 1:
/* The two unused registers beyond fpcr are inaccessible. */
memset (zerobuf, 0, MAX_REGISTER_SIZE);
regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf);
break;
case E_FPCR_REGNUM + 2:
memset (zerobuf, 0, MAX_REGISTER_SIZE);
regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf);
break;
default: /* An error, obviously, but should we error out? */
break;
case -1:
for (i = 0; i < MN10300_ELF_NGREG; i++)
am33_supply_gregset_method (regset, regcache, i, gregs, len);
break;
}
return;
}
/* Copy fp register value of REGNUM from regset to regcache.
If REGNUM is -1, do this for all fp registers in regset. */
static void
am33_supply_fpregset_method (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
const mn10300_elf_fpregset_t *fpregset = fpregs;
gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
if (regnum == -1)
{
int i;
for (i = 0; i < MN10300_ELF_NFPREG; i++)
am33_supply_fpregset_method (regset, regcache,
E_FS0_REGNUM + i, fpregs, len);
am33_supply_fpregset_method (regset, regcache,
E_FPCR_REGNUM, fpregs, len);
}
else if (regnum == E_FPCR_REGNUM)
regcache_raw_supply (current_regcache, E_FPCR_REGNUM,
&fpregset->fpcr);
else if (E_FS0_REGNUM <= regnum && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
regcache_raw_supply (current_regcache, regnum,
&fpregset->fpregs[regnum - E_FS0_REGNUM]);
return;
}
/* Copy register values from regcache to regset. */
static void
am33_collect_gregset_method (const struct regset *regset,
const struct regcache *regcache,
int regnum, void *gregs, size_t len)
{
mn10300_elf_gregset_t *regp = gregs;
int i;
gdb_assert (len == sizeof (mn10300_elf_gregset_t));
switch (regnum) {
case E_D0_REGNUM:
regcache_raw_collect (regcache, E_D0_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
break;
case E_D1_REGNUM:
regcache_raw_collect (regcache, E_D1_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
break;
case E_D2_REGNUM:
regcache_raw_collect (regcache, E_D2_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
break;
case E_D3_REGNUM:
regcache_raw_collect (regcache, E_D3_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
break;
case E_A0_REGNUM:
regcache_raw_collect (regcache, E_A0_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
break;
case E_A1_REGNUM:
regcache_raw_collect (regcache, E_A1_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
break;
case E_A2_REGNUM:
regcache_raw_collect (regcache, E_A2_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
break;
case E_A3_REGNUM:
regcache_raw_collect (regcache, E_A3_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
break;
case E_SP_REGNUM:
regcache_raw_collect (regcache, E_SP_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
break;
case E_PC_REGNUM:
regcache_raw_collect (regcache, E_PC_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
break;
case E_MDR_REGNUM:
regcache_raw_collect (regcache, E_MDR_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
break;
case E_PSW_REGNUM:
regcache_raw_collect (regcache, E_PSW_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
break;
case E_LIR_REGNUM:
regcache_raw_collect (regcache, E_LIR_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
break;
case E_LAR_REGNUM:
regcache_raw_collect (regcache, E_LAR_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
break;
case E_MDRQ_REGNUM:
regcache_raw_collect (regcache, E_MDRQ_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
break;
case E_E0_REGNUM:
regcache_raw_collect (regcache, E_E0_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
break;
case E_E1_REGNUM:
regcache_raw_collect (regcache, E_E1_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
break;
case E_E2_REGNUM:
regcache_raw_collect (regcache, E_E2_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
break;
case E_E3_REGNUM:
regcache_raw_collect (regcache, E_E3_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
break;
case E_E4_REGNUM:
regcache_raw_collect (regcache, E_E4_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
break;
case E_E5_REGNUM:
regcache_raw_collect (regcache, E_E5_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
break;
case E_E6_REGNUM:
regcache_raw_collect (regcache, E_E6_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
break;
case E_E7_REGNUM:
regcache_raw_collect (regcache, E_E7_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
break;
/* ssp, msp, and usp are inaccessible. */
case E_E8_REGNUM:
/* The gregset struct has noplace to put this: do nothing. */
break;
case E_E9_REGNUM:
/* The gregset struct has noplace to put this: do nothing. */
break;
case E_E10_REGNUM:
/* The gregset struct has noplace to put this: do nothing. */
break;
case E_MCRH_REGNUM:
regcache_raw_collect (regcache, E_MCRH_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
break;
case E_MCRL_REGNUM:
regcache_raw_collect (regcache, E_MCRL_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
break;
case E_MCVF_REGNUM:
regcache_raw_collect (regcache, E_MCVF_REGNUM,
(regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
break;
case E_FPCR_REGNUM:
/* FPCR is numbered among the GP regs, but handled as an FP reg.
Do nothing. */
break;
case E_FPCR_REGNUM + 1:
/* The gregset struct has noplace to put this: do nothing. */
break;
case E_FPCR_REGNUM + 2:
/* The gregset struct has noplace to put this: do nothing. */
break;
default: /* An error, obviously, but should we error out? */
break;
case -1:
for (i = 0; i < MN10300_ELF_NGREG; i++)
am33_collect_gregset_method (regset, regcache, i, gregs, len);
break;
}
return;
}
/* Copy fp register values from regcache to regset. */
static void
am33_collect_fpregset_method (const struct regset *regset,
const struct regcache *regcache,
int regnum, void *fpregs, size_t len)
{
mn10300_elf_fpregset_t *fpregset = fpregs;
gdb_assert (len == sizeof (mn10300_elf_fpregset_t));
if (regnum == -1)
{
int i;
for (i = 0; i < MN10300_ELF_NFPREG; i++)
am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
fpregs, len);
am33_collect_fpregset_method (regset, regcache,
E_FPCR_REGNUM, fpregs, len);
}
else if (regnum == E_FPCR_REGNUM)
regcache_raw_collect (current_regcache, E_FPCR_REGNUM,
&fpregset->fpcr);
else if (E_FS0_REGNUM <= regnum
&& regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
regcache_raw_collect (current_regcache, regnum,
&fpregset->fpregs[regnum - E_FS0_REGNUM]);
return;
}
/* Create a struct regset from a corefile register section. */
static const struct regset *
am33_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name,
size_t sect_size)
{
/* We will call regset_alloc, and pass the names of the supply and
collect methods. */
if (sect_size == sizeof (mn10300_elf_fpregset_t))
return regset_alloc (gdbarch,
am33_supply_fpregset_method,
am33_collect_fpregset_method);
else
return regset_alloc (gdbarch,
am33_supply_gregset_method,
am33_collect_gregset_method);
}
/* AM33 Linux osabi has been recognized.
Now's our chance to register our corefile handling. */
static void
am33_linux_init_osabi (struct gdbarch_info gdbinfo, struct gdbarch *gdbarch)
{
set_gdbarch_regset_from_core_section (gdbarch,
am33_regset_from_core_section);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
void
_initialize_mn10300_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_mn10300, 0,
GDB_OSABI_LINUX, am33_linux_init_osabi);
}
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