728 lines
22 KiB
C
728 lines
22 KiB
C
/* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
|
||
|
||
Copyright (C) 2003-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#include "defs.h"
|
||
#include "gdbcore.h"
|
||
#include "regcache.h"
|
||
#include "mn10300-tdep.h"
|
||
#include "bfd.h"
|
||
#include "elf-bfd.h"
|
||
#include "osabi.h"
|
||
#include "regset.h"
|
||
#include "solib-svr4.h"
|
||
#include "frame.h"
|
||
#include "trad-frame.h"
|
||
#include "tramp-frame.h"
|
||
#include "linux-tdep.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)
|
||
{
|
||
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:
|
||
regcache->raw_supply_zeroed (E_E8_REGNUM);
|
||
break;
|
||
case E_E9_REGNUM:
|
||
regcache->raw_supply_zeroed (E_E9_REGNUM);
|
||
break;
|
||
case E_E10_REGNUM:
|
||
regcache->raw_supply_zeroed (E_E10_REGNUM);
|
||
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. */
|
||
regcache->raw_supply_zeroed (E_FPCR_REGNUM + 1);
|
||
break;
|
||
case E_FPCR_REGNUM + 2:
|
||
regcache->raw_supply_zeroed (E_FPCR_REGNUM + 2);
|
||
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
|
||
= (const mn10300_elf_fpregset_t *) 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 (regcache, E_FPCR_REGNUM,
|
||
&fpregset->fpcr);
|
||
else if (E_FS0_REGNUM <= regnum
|
||
&& regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
|
||
regcache_raw_supply (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 = (gdb_byte (*)[28][4]) 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 = (mn10300_elf_fpregset_t *) 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 (regcache, E_FPCR_REGNUM,
|
||
&fpregset->fpcr);
|
||
else if (E_FS0_REGNUM <= regnum
|
||
&& regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
|
||
regcache_raw_collect (regcache, regnum,
|
||
&fpregset->fpregs[regnum - E_FS0_REGNUM]);
|
||
|
||
return;
|
||
}
|
||
|
||
static const struct regset am33_gregset =
|
||
{
|
||
NULL, am33_supply_gregset_method, am33_collect_gregset_method
|
||
};
|
||
|
||
static const struct regset am33_fpregset =
|
||
{
|
||
NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
|
||
};
|
||
|
||
/* Iterate over core file register note sections. */
|
||
|
||
static void
|
||
am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
||
iterate_over_regset_sections_cb *cb,
|
||
void *cb_data,
|
||
const struct regcache *regcache)
|
||
{
|
||
cb (".reg", sizeof (mn10300_elf_gregset_t), &am33_gregset,
|
||
NULL, cb_data);
|
||
cb (".reg2", sizeof(mn10300_elf_fpregset_t), &am33_fpregset,
|
||
NULL, cb_data);
|
||
}
|
||
|
||
static void
|
||
am33_linux_sigframe_cache_init (const struct tramp_frame *self,
|
||
struct frame_info *this_frame,
|
||
struct trad_frame_cache *this_cache,
|
||
CORE_ADDR func);
|
||
|
||
static const struct tramp_frame am33_linux_sigframe = {
|
||
SIGTRAMP_FRAME,
|
||
1,
|
||
{
|
||
/* mov 119,d0 */
|
||
{ 0x2c, -1 },
|
||
{ 0x77, -1 },
|
||
{ 0x00, -1 },
|
||
/* syscall 0 */
|
||
{ 0xf0, -1 },
|
||
{ 0xe0, -1 },
|
||
{ TRAMP_SENTINEL_INSN, -1 }
|
||
},
|
||
am33_linux_sigframe_cache_init
|
||
};
|
||
|
||
static const struct tramp_frame am33_linux_rt_sigframe = {
|
||
SIGTRAMP_FRAME,
|
||
1,
|
||
{
|
||
/* mov 173,d0 */
|
||
{ 0x2c, -1 },
|
||
{ 0xad, -1 },
|
||
{ 0x00, -1 },
|
||
/* syscall 0 */
|
||
{ 0xf0, -1 },
|
||
{ 0xe0, -1 },
|
||
{ TRAMP_SENTINEL_INSN, -1 }
|
||
},
|
||
am33_linux_sigframe_cache_init
|
||
};
|
||
|
||
/* Relevant struct definitions for signal handling...
|
||
|
||
From arch/mn10300/kernel/sigframe.h:
|
||
|
||
struct sigframe
|
||
{
|
||
void (*pretcode)(void);
|
||
int sig;
|
||
struct sigcontext *psc;
|
||
struct sigcontext sc;
|
||
struct fpucontext fpuctx;
|
||
unsigned long extramask[_NSIG_WORDS-1];
|
||
char retcode[8];
|
||
};
|
||
|
||
struct rt_sigframe
|
||
{
|
||
void (*pretcode)(void);
|
||
int sig;
|
||
struct siginfo *pinfo;
|
||
void *puc;
|
||
struct siginfo info;
|
||
struct ucontext uc;
|
||
struct fpucontext fpuctx;
|
||
char retcode[8];
|
||
};
|
||
|
||
From include/asm-mn10300/ucontext.h:
|
||
|
||
struct ucontext {
|
||
unsigned long uc_flags;
|
||
struct ucontext *uc_link;
|
||
stack_t uc_stack;
|
||
struct sigcontext uc_mcontext;
|
||
sigset_t uc_sigmask;
|
||
};
|
||
|
||
From include/asm-mn10300/sigcontext.h:
|
||
|
||
struct fpucontext {
|
||
unsigned long fs[32];
|
||
unsigned long fpcr;
|
||
};
|
||
|
||
struct sigcontext {
|
||
unsigned long d0;
|
||
unsigned long d1;
|
||
unsigned long d2;
|
||
unsigned long d3;
|
||
unsigned long a0;
|
||
unsigned long a1;
|
||
unsigned long a2;
|
||
unsigned long a3;
|
||
unsigned long e0;
|
||
unsigned long e1;
|
||
unsigned long e2;
|
||
unsigned long e3;
|
||
unsigned long e4;
|
||
unsigned long e5;
|
||
unsigned long e6;
|
||
unsigned long e7;
|
||
unsigned long lar;
|
||
unsigned long lir;
|
||
unsigned long mdr;
|
||
unsigned long mcvf;
|
||
unsigned long mcrl;
|
||
unsigned long mcrh;
|
||
unsigned long mdrq;
|
||
unsigned long sp;
|
||
unsigned long epsw;
|
||
unsigned long pc;
|
||
struct fpucontext *fpucontext;
|
||
unsigned long oldmask;
|
||
}; */
|
||
|
||
|
||
#define AM33_SIGCONTEXT_D0 0
|
||
#define AM33_SIGCONTEXT_D1 4
|
||
#define AM33_SIGCONTEXT_D2 8
|
||
#define AM33_SIGCONTEXT_D3 12
|
||
#define AM33_SIGCONTEXT_A0 16
|
||
#define AM33_SIGCONTEXT_A1 20
|
||
#define AM33_SIGCONTEXT_A2 24
|
||
#define AM33_SIGCONTEXT_A3 28
|
||
#define AM33_SIGCONTEXT_E0 32
|
||
#define AM33_SIGCONTEXT_E1 36
|
||
#define AM33_SIGCONTEXT_E2 40
|
||
#define AM33_SIGCONTEXT_E3 44
|
||
#define AM33_SIGCONTEXT_E4 48
|
||
#define AM33_SIGCONTEXT_E5 52
|
||
#define AM33_SIGCONTEXT_E6 56
|
||
#define AM33_SIGCONTEXT_E7 60
|
||
#define AM33_SIGCONTEXT_LAR 64
|
||
#define AM33_SIGCONTEXT_LIR 68
|
||
#define AM33_SIGCONTEXT_MDR 72
|
||
#define AM33_SIGCONTEXT_MCVF 76
|
||
#define AM33_SIGCONTEXT_MCRL 80
|
||
#define AM33_SIGCONTEXT_MCRH 84
|
||
#define AM33_SIGCONTEXT_MDRQ 88
|
||
#define AM33_SIGCONTEXT_SP 92
|
||
#define AM33_SIGCONTEXT_EPSW 96
|
||
#define AM33_SIGCONTEXT_PC 100
|
||
#define AM33_SIGCONTEXT_FPUCONTEXT 104
|
||
|
||
|
||
static void
|
||
am33_linux_sigframe_cache_init (const struct tramp_frame *self,
|
||
struct frame_info *this_frame,
|
||
struct trad_frame_cache *this_cache,
|
||
CORE_ADDR func)
|
||
{
|
||
CORE_ADDR sc_base, fpubase;
|
||
int i;
|
||
|
||
sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
|
||
if (self == &am33_linux_sigframe)
|
||
{
|
||
sc_base += 8;
|
||
sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
|
||
}
|
||
else
|
||
{
|
||
sc_base += 12;
|
||
sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
|
||
sc_base += 20;
|
||
}
|
||
|
||
trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_D0);
|
||
trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_D1);
|
||
trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_D2);
|
||
trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_D3);
|
||
|
||
trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_A0);
|
||
trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_A1);
|
||
trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_A2);
|
||
trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_A3);
|
||
|
||
trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E0);
|
||
trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E1);
|
||
trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E2);
|
||
trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E3);
|
||
trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E4);
|
||
trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E5);
|
||
trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E6);
|
||
trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_E7);
|
||
|
||
trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_LAR);
|
||
trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_LIR);
|
||
trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_MDR);
|
||
trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_MCVF);
|
||
trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_MCRL);
|
||
trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_MDRQ);
|
||
|
||
trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_SP);
|
||
trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_EPSW);
|
||
trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
|
||
sc_base + AM33_SIGCONTEXT_PC);
|
||
|
||
fpubase = get_frame_memory_unsigned (this_frame,
|
||
sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
|
||
4);
|
||
if (fpubase)
|
||
{
|
||
for (i = 0; i < 32; i++)
|
||
{
|
||
trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
|
||
fpubase + 4 * i);
|
||
}
|
||
trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
|
||
}
|
||
|
||
trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
|
||
}
|
||
|
||
/* AM33 GNU/Linux osabi has been recognized.
|
||
Now's our chance to register our corefile handling. */
|
||
|
||
static void
|
||
am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||
{
|
||
linux_init_abi (info, gdbarch);
|
||
|
||
set_gdbarch_iterate_over_regset_sections
|
||
(gdbarch, am33_iterate_over_regset_sections);
|
||
set_solib_svr4_fetch_link_map_offsets
|
||
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
||
|
||
tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
|
||
tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
|
||
}
|
||
|
||
void
|
||
_initialize_mn10300_linux_tdep (void)
|
||
{
|
||
gdbarch_register_osabi (bfd_arch_mn10300, 0,
|
||
GDB_OSABI_LINUX, am33_linux_init_osabi);
|
||
}
|
||
|