/* IBM RS/6000 native-dependent code for GDB, the GNU debugger.
|
/* IBM RS/6000 native-dependent code for GDB, the GNU debugger.
|
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
|
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
|
1998, 1999, 2000, 2001
|
1998, 1999, 2000, 2001
|
Free Software Foundation, Inc.
|
Free Software Foundation, Inc.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 2 of the License, or
|
the Free Software Foundation; either version 2 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program; if not, write to the Free Software
|
along with this program; if not, write to the Free Software
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
Boston, MA 02111-1307, USA. */
|
Boston, MA 02111-1307, USA. */
|
|
|
#include "defs.h"
|
#include "defs.h"
|
#include "inferior.h"
|
#include "inferior.h"
|
#include "target.h"
|
#include "target.h"
|
#include "gdbcore.h"
|
#include "gdbcore.h"
|
#include "xcoffsolib.h"
|
#include "xcoffsolib.h"
|
#include "symfile.h"
|
#include "symfile.h"
|
#include "objfiles.h"
|
#include "objfiles.h"
|
#include "libbfd.h" /* For bfd_cache_lookup (FIXME) */
|
#include "libbfd.h" /* For bfd_cache_lookup (FIXME) */
|
#include "bfd.h"
|
#include "bfd.h"
|
#include "gdb-stabs.h"
|
#include "gdb-stabs.h"
|
#include "regcache.h"
|
#include "regcache.h"
|
|
|
#include <sys/ptrace.h>
|
#include <sys/ptrace.h>
|
#include <sys/reg.h>
|
#include <sys/reg.h>
|
|
|
#include <sys/param.h>
|
#include <sys/param.h>
|
#include <sys/dir.h>
|
#include <sys/dir.h>
|
#include <sys/user.h>
|
#include <sys/user.h>
|
#include <signal.h>
|
#include <signal.h>
|
#include <sys/ioctl.h>
|
#include <sys/ioctl.h>
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#include <errno.h>
|
#include <errno.h>
|
|
|
#include <a.out.h>
|
#include <a.out.h>
|
#include <sys/file.h>
|
#include <sys/file.h>
|
#include "gdb_stat.h"
|
#include "gdb_stat.h"
|
#include <sys/core.h>
|
#include <sys/core.h>
|
#define __LDINFO_PTRACE32__ /* for __ld_info32 */
|
#define __LDINFO_PTRACE32__ /* for __ld_info32 */
|
#define __LDINFO_PTRACE64__ /* for __ld_info64 */
|
#define __LDINFO_PTRACE64__ /* for __ld_info64 */
|
#include <sys/ldr.h>
|
#include <sys/ldr.h>
|
#include <sys/systemcfg.h>
|
#include <sys/systemcfg.h>
|
|
|
/* On AIX4.3+, sys/ldr.h provides different versions of struct ld_info for
|
/* On AIX4.3+, sys/ldr.h provides different versions of struct ld_info for
|
debugging 32-bit and 64-bit processes. Define a typedef and macros for
|
debugging 32-bit and 64-bit processes. Define a typedef and macros for
|
accessing fields in the appropriate structures. */
|
accessing fields in the appropriate structures. */
|
|
|
/* In 32-bit compilation mode (which is the only mode from which ptrace()
|
/* In 32-bit compilation mode (which is the only mode from which ptrace()
|
works on 4.3), __ld_info32 is #defined as equivalent to ld_info. */
|
works on 4.3), __ld_info32 is #defined as equivalent to ld_info. */
|
|
|
#ifdef __ld_info32
|
#ifdef __ld_info32
|
# define ARCH3264
|
# define ARCH3264
|
#endif
|
#endif
|
|
|
/* Return whether the current architecture is 64-bit. */
|
/* Return whether the current architecture is 64-bit. */
|
|
|
#ifndef ARCH3264
|
#ifndef ARCH3264
|
# define ARCH64() 0
|
# define ARCH64() 0
|
#else
|
#else
|
# define ARCH64() (REGISTER_RAW_SIZE (0) == 8)
|
# define ARCH64() (REGISTER_RAW_SIZE (0) == 8)
|
#endif
|
#endif
|
|
|
/* Union of 32-bit and 64-bit ".reg" core file sections. */
|
/* Union of 32-bit and 64-bit ".reg" core file sections. */
|
|
|
typedef union {
|
typedef union {
|
#ifdef ARCH3264
|
#ifdef ARCH3264
|
struct __context64 r64;
|
struct __context64 r64;
|
#else
|
#else
|
struct mstsave r64;
|
struct mstsave r64;
|
#endif
|
#endif
|
struct mstsave r32;
|
struct mstsave r32;
|
} CoreRegs;
|
} CoreRegs;
|
|
|
/* Union of 32-bit and 64-bit versions of ld_info. */
|
/* Union of 32-bit and 64-bit versions of ld_info. */
|
|
|
typedef union {
|
typedef union {
|
#ifndef ARCH3264
|
#ifndef ARCH3264
|
struct ld_info l32;
|
struct ld_info l32;
|
struct ld_info l64;
|
struct ld_info l64;
|
#else
|
#else
|
struct __ld_info32 l32;
|
struct __ld_info32 l32;
|
struct __ld_info64 l64;
|
struct __ld_info64 l64;
|
#endif
|
#endif
|
} LdInfo;
|
} LdInfo;
|
|
|
/* If compiling with 32-bit and 64-bit debugging capability (e.g. AIX 4.x),
|
/* If compiling with 32-bit and 64-bit debugging capability (e.g. AIX 4.x),
|
declare and initialize a variable named VAR suitable for use as the arch64
|
declare and initialize a variable named VAR suitable for use as the arch64
|
parameter to the various LDI_*() macros. */
|
parameter to the various LDI_*() macros. */
|
|
|
#ifndef ARCH3264
|
#ifndef ARCH3264
|
# define ARCH64_DECL(var)
|
# define ARCH64_DECL(var)
|
#else
|
#else
|
# define ARCH64_DECL(var) int var = ARCH64 ()
|
# define ARCH64_DECL(var) int var = ARCH64 ()
|
#endif
|
#endif
|
|
|
/* Return LDI's FIELD for a 64-bit process if ARCH64 and for a 32-bit process
|
/* Return LDI's FIELD for a 64-bit process if ARCH64 and for a 32-bit process
|
otherwise. This technique only works for FIELDs with the same data type in
|
otherwise. This technique only works for FIELDs with the same data type in
|
32-bit and 64-bit versions of ld_info. */
|
32-bit and 64-bit versions of ld_info. */
|
|
|
#ifndef ARCH3264
|
#ifndef ARCH3264
|
# define LDI_FIELD(ldi, arch64, field) (ldi)->l32.ldinfo_##field
|
# define LDI_FIELD(ldi, arch64, field) (ldi)->l32.ldinfo_##field
|
#else
|
#else
|
# define LDI_FIELD(ldi, arch64, field) \
|
# define LDI_FIELD(ldi, arch64, field) \
|
(arch64 ? (ldi)->l64.ldinfo_##field : (ldi)->l32.ldinfo_##field)
|
(arch64 ? (ldi)->l64.ldinfo_##field : (ldi)->l32.ldinfo_##field)
|
#endif
|
#endif
|
|
|
/* Return various LDI fields for a 64-bit process if ARCH64 and for a 32-bit
|
/* Return various LDI fields for a 64-bit process if ARCH64 and for a 32-bit
|
process otherwise. */
|
process otherwise. */
|
|
|
#define LDI_NEXT(ldi, arch64) LDI_FIELD(ldi, arch64, next)
|
#define LDI_NEXT(ldi, arch64) LDI_FIELD(ldi, arch64, next)
|
#define LDI_FD(ldi, arch64) LDI_FIELD(ldi, arch64, fd)
|
#define LDI_FD(ldi, arch64) LDI_FIELD(ldi, arch64, fd)
|
#define LDI_FILENAME(ldi, arch64) LDI_FIELD(ldi, arch64, filename)
|
#define LDI_FILENAME(ldi, arch64) LDI_FIELD(ldi, arch64, filename)
|
|
|
extern struct vmap *map_vmap (bfd * bf, bfd * arch);
|
extern struct vmap *map_vmap (bfd * bf, bfd * arch);
|
|
|
extern struct target_ops exec_ops;
|
extern struct target_ops exec_ops;
|
|
|
static void vmap_exec (void);
|
static void vmap_exec (void);
|
|
|
static void vmap_ldinfo (LdInfo *);
|
static void vmap_ldinfo (LdInfo *);
|
|
|
static struct vmap *add_vmap (LdInfo *);
|
static struct vmap *add_vmap (LdInfo *);
|
|
|
static int objfile_symbol_add (void *);
|
static int objfile_symbol_add (void *);
|
|
|
static void vmap_symtab (struct vmap *);
|
static void vmap_symtab (struct vmap *);
|
|
|
static void fetch_core_registers (char *, unsigned int, int, CORE_ADDR);
|
static void fetch_core_registers (char *, unsigned int, int, CORE_ADDR);
|
|
|
static void exec_one_dummy_insn (void);
|
static void exec_one_dummy_insn (void);
|
|
|
extern void
|
extern void
|
fixup_breakpoints (CORE_ADDR low, CORE_ADDR high, CORE_ADDR delta);
|
fixup_breakpoints (CORE_ADDR low, CORE_ADDR high, CORE_ADDR delta);
|
|
|
/* Conversion from gdb-to-system special purpose register numbers. */
|
/* Conversion from gdb-to-system special purpose register numbers. */
|
|
|
static int special_regs[] =
|
static int special_regs[] =
|
{
|
{
|
IAR, /* PC_REGNUM */
|
IAR, /* PC_REGNUM */
|
MSR, /* PS_REGNUM */
|
MSR, /* PS_REGNUM */
|
CR, /* CR_REGNUM */
|
CR, /* CR_REGNUM */
|
LR, /* LR_REGNUM */
|
LR, /* LR_REGNUM */
|
CTR, /* CTR_REGNUM */
|
CTR, /* CTR_REGNUM */
|
XER, /* XER_REGNUM */
|
XER, /* XER_REGNUM */
|
MQ /* MQ_REGNUM */
|
MQ /* MQ_REGNUM */
|
};
|
};
|
|
|
/* Call ptrace(REQ, ID, ADDR, DATA, BUF). */
|
/* Call ptrace(REQ, ID, ADDR, DATA, BUF). */
|
|
|
static int
|
static int
|
ptrace32 (int req, int id, int *addr, int data, int *buf)
|
ptrace32 (int req, int id, int *addr, int data, int *buf)
|
{
|
{
|
int ret = ptrace (req, id, (int *)addr, data, buf);
|
int ret = ptrace (req, id, (int *)addr, data, buf);
|
#if 0
|
#if 0
|
printf ("ptrace32 (%d, %d, 0x%x, %08x, 0x%x) = 0x%x\n",
|
printf ("ptrace32 (%d, %d, 0x%x, %08x, 0x%x) = 0x%x\n",
|
req, id, (unsigned int)addr, data, (unsigned int)buf, ret);
|
req, id, (unsigned int)addr, data, (unsigned int)buf, ret);
|
#endif
|
#endif
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/* Call ptracex(REQ, ID, ADDR, DATA, BUF). */
|
/* Call ptracex(REQ, ID, ADDR, DATA, BUF). */
|
|
|
static int
|
static int
|
ptrace64 (int req, int id, long long addr, int data, int *buf)
|
ptrace64 (int req, int id, long long addr, int data, int *buf)
|
{
|
{
|
#ifdef ARCH3264
|
#ifdef ARCH3264
|
int ret = ptracex (req, id, addr, data, buf);
|
int ret = ptracex (req, id, addr, data, buf);
|
#else
|
#else
|
int ret = 0;
|
int ret = 0;
|
#endif
|
#endif
|
#if 0
|
#if 0
|
printf ("ptrace64 (%d, %d, 0x%llx, %08x, 0x%x) = 0x%x\n",
|
printf ("ptrace64 (%d, %d, 0x%llx, %08x, 0x%x) = 0x%x\n",
|
req, id, addr, data, (unsigned int)buf, ret);
|
req, id, addr, data, (unsigned int)buf, ret);
|
#endif
|
#endif
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/* Fetch register REGNO from the inferior. */
|
/* Fetch register REGNO from the inferior. */
|
|
|
static void
|
static void
|
fetch_register (int regno)
|
fetch_register (int regno)
|
{
|
{
|
int *addr = (int *) ®isters[REGISTER_BYTE (regno)];
|
int *addr = (int *) ®isters[REGISTER_BYTE (regno)];
|
int nr;
|
int nr;
|
|
|
/* Retrieved values may be -1, so infer errors from errno. */
|
/* Retrieved values may be -1, so infer errors from errno. */
|
errno = 0;
|
errno = 0;
|
|
|
/* Floating-point registers. */
|
/* Floating-point registers. */
|
if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
|
if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
|
{
|
{
|
nr = regno - FP0_REGNUM + FPR0;
|
nr = regno - FP0_REGNUM + FPR0;
|
ptrace32 (PT_READ_FPR, PIDGET (inferior_ptid), addr, nr, 0);
|
ptrace32 (PT_READ_FPR, PIDGET (inferior_ptid), addr, nr, 0);
|
}
|
}
|
|
|
/* Bogus register number. */
|
/* Bogus register number. */
|
else if (regno > LAST_UISA_SP_REGNUM)
|
else if (regno > LAST_UISA_SP_REGNUM)
|
fprintf_unfiltered (gdb_stderr,
|
fprintf_unfiltered (gdb_stderr,
|
"gdb error: register no %d not implemented.\n",
|
"gdb error: register no %d not implemented.\n",
|
regno);
|
regno);
|
|
|
/* Fixed-point registers. */
|
/* Fixed-point registers. */
|
else
|
else
|
{
|
{
|
if (regno >= FIRST_UISA_SP_REGNUM)
|
if (regno >= FIRST_UISA_SP_REGNUM)
|
nr = special_regs[regno - FIRST_UISA_SP_REGNUM];
|
nr = special_regs[regno - FIRST_UISA_SP_REGNUM];
|
else
|
else
|
nr = regno;
|
nr = regno;
|
|
|
if (!ARCH64 ())
|
if (!ARCH64 ())
|
*addr = ptrace32 (PT_READ_GPR, PIDGET (inferior_ptid), (int *)nr, 0, 0);
|
*addr = ptrace32 (PT_READ_GPR, PIDGET (inferior_ptid), (int *)nr, 0, 0);
|
else
|
else
|
{
|
{
|
/* PT_READ_GPR requires the buffer parameter to point to long long,
|
/* PT_READ_GPR requires the buffer parameter to point to long long,
|
even if the register is really only 32 bits. */
|
even if the register is really only 32 bits. */
|
long long buf;
|
long long buf;
|
ptrace64 (PT_READ_GPR, PIDGET (inferior_ptid), nr, 0, (int *)&buf);
|
ptrace64 (PT_READ_GPR, PIDGET (inferior_ptid), nr, 0, (int *)&buf);
|
if (REGISTER_RAW_SIZE (regno) == 8)
|
if (REGISTER_RAW_SIZE (regno) == 8)
|
memcpy (addr, &buf, 8);
|
memcpy (addr, &buf, 8);
|
else
|
else
|
*addr = buf;
|
*addr = buf;
|
}
|
}
|
}
|
}
|
|
|
if (!errno)
|
if (!errno)
|
register_valid[regno] = 1;
|
register_valid[regno] = 1;
|
else
|
else
|
{
|
{
|
#if 0
|
#if 0
|
/* FIXME: this happens 3 times at the start of each 64-bit program. */
|
/* FIXME: this happens 3 times at the start of each 64-bit program. */
|
perror ("ptrace read");
|
perror ("ptrace read");
|
#endif
|
#endif
|
errno = 0;
|
errno = 0;
|
}
|
}
|
}
|
}
|
|
|
/* Store register REGNO back into the inferior. */
|
/* Store register REGNO back into the inferior. */
|
|
|
static void
|
static void
|
store_register (int regno)
|
store_register (int regno)
|
{
|
{
|
int *addr = (int *) ®isters[REGISTER_BYTE (regno)];
|
int *addr = (int *) ®isters[REGISTER_BYTE (regno)];
|
int nr;
|
int nr;
|
|
|
/* -1 can be a successful return value, so infer errors from errno. */
|
/* -1 can be a successful return value, so infer errors from errno. */
|
errno = 0;
|
errno = 0;
|
|
|
/* Floating-point registers. */
|
/* Floating-point registers. */
|
if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
|
if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
|
{
|
{
|
nr = regno - FP0_REGNUM + FPR0;
|
nr = regno - FP0_REGNUM + FPR0;
|
ptrace32 (PT_WRITE_FPR, PIDGET (inferior_ptid), addr, nr, 0);
|
ptrace32 (PT_WRITE_FPR, PIDGET (inferior_ptid), addr, nr, 0);
|
}
|
}
|
|
|
/* Bogus register number. */
|
/* Bogus register number. */
|
else if (regno > LAST_UISA_SP_REGNUM)
|
else if (regno > LAST_UISA_SP_REGNUM)
|
{
|
{
|
if (regno >= NUM_REGS)
|
if (regno >= NUM_REGS)
|
fprintf_unfiltered (gdb_stderr,
|
fprintf_unfiltered (gdb_stderr,
|
"gdb error: register no %d not implemented.\n",
|
"gdb error: register no %d not implemented.\n",
|
regno);
|
regno);
|
}
|
}
|
|
|
/* Fixed-point registers. */
|
/* Fixed-point registers. */
|
else
|
else
|
{
|
{
|
if (regno == SP_REGNUM)
|
if (regno == SP_REGNUM)
|
/* Execute one dummy instruction (which is a breakpoint) in inferior
|
/* Execute one dummy instruction (which is a breakpoint) in inferior
|
process to give kernel a chance to do internal housekeeping.
|
process to give kernel a chance to do internal housekeeping.
|
Otherwise the following ptrace(2) calls will mess up user stack
|
Otherwise the following ptrace(2) calls will mess up user stack
|
since kernel will get confused about the bottom of the stack
|
since kernel will get confused about the bottom of the stack
|
(%sp). */
|
(%sp). */
|
exec_one_dummy_insn ();
|
exec_one_dummy_insn ();
|
|
|
if (regno >= FIRST_UISA_SP_REGNUM)
|
if (regno >= FIRST_UISA_SP_REGNUM)
|
nr = special_regs[regno - FIRST_UISA_SP_REGNUM];
|
nr = special_regs[regno - FIRST_UISA_SP_REGNUM];
|
else
|
else
|
nr = regno;
|
nr = regno;
|
|
|
if (!ARCH64 ())
|
if (!ARCH64 ())
|
ptrace32 (PT_WRITE_GPR, PIDGET (inferior_ptid), (int *)nr, *addr, 0);
|
ptrace32 (PT_WRITE_GPR, PIDGET (inferior_ptid), (int *)nr, *addr, 0);
|
else
|
else
|
{
|
{
|
/* PT_WRITE_GPR requires the buffer parameter to point to an 8-byte
|
/* PT_WRITE_GPR requires the buffer parameter to point to an 8-byte
|
area, even if the register is really only 32 bits. */
|
area, even if the register is really only 32 bits. */
|
long long buf;
|
long long buf;
|
if (REGISTER_RAW_SIZE (regno) == 8)
|
if (REGISTER_RAW_SIZE (regno) == 8)
|
memcpy (&buf, addr, 8);
|
memcpy (&buf, addr, 8);
|
else
|
else
|
buf = *addr;
|
buf = *addr;
|
ptrace64 (PT_WRITE_GPR, PIDGET (inferior_ptid), nr, 0, (int *)&buf);
|
ptrace64 (PT_WRITE_GPR, PIDGET (inferior_ptid), nr, 0, (int *)&buf);
|
}
|
}
|
}
|
}
|
|
|
if (errno)
|
if (errno)
|
{
|
{
|
perror ("ptrace write");
|
perror ("ptrace write");
|
errno = 0;
|
errno = 0;
|
}
|
}
|
}
|
}
|
|
|
/* Read from the inferior all registers if REGNO == -1 and just register
|
/* Read from the inferior all registers if REGNO == -1 and just register
|
REGNO otherwise. */
|
REGNO otherwise. */
|
|
|
void
|
void
|
fetch_inferior_registers (int regno)
|
fetch_inferior_registers (int regno)
|
{
|
{
|
if (regno != -1)
|
if (regno != -1)
|
fetch_register (regno);
|
fetch_register (regno);
|
|
|
else
|
else
|
{
|
{
|
/* read 32 general purpose registers. */
|
/* read 32 general purpose registers. */
|
for (regno = 0; regno < 32; regno++)
|
for (regno = 0; regno < 32; regno++)
|
fetch_register (regno);
|
fetch_register (regno);
|
|
|
/* read general purpose floating point registers. */
|
/* read general purpose floating point registers. */
|
for (regno = FP0_REGNUM; regno <= FPLAST_REGNUM; regno++)
|
for (regno = FP0_REGNUM; regno <= FPLAST_REGNUM; regno++)
|
fetch_register (regno);
|
fetch_register (regno);
|
|
|
/* read special registers. */
|
/* read special registers. */
|
for (regno = FIRST_UISA_SP_REGNUM; regno <= LAST_UISA_SP_REGNUM; regno++)
|
for (regno = FIRST_UISA_SP_REGNUM; regno <= LAST_UISA_SP_REGNUM; regno++)
|
fetch_register (regno);
|
fetch_register (regno);
|
}
|
}
|
}
|
}
|
|
|
/* Store our register values back into the inferior.
|
/* Store our register values back into the inferior.
|
If REGNO is -1, do this for all registers.
|
If REGNO is -1, do this for all registers.
|
Otherwise, REGNO specifies which register (so we can save time). */
|
Otherwise, REGNO specifies which register (so we can save time). */
|
|
|
void
|
void
|
store_inferior_registers (int regno)
|
store_inferior_registers (int regno)
|
{
|
{
|
if (regno != -1)
|
if (regno != -1)
|
store_register (regno);
|
store_register (regno);
|
|
|
else
|
else
|
{
|
{
|
/* write general purpose registers first! */
|
/* write general purpose registers first! */
|
for (regno = GPR0; regno <= GPR31; regno++)
|
for (regno = GPR0; regno <= GPR31; regno++)
|
store_register (regno);
|
store_register (regno);
|
|
|
/* write floating point registers now. */
|
/* write floating point registers now. */
|
for (regno = FP0_REGNUM; regno <= FPLAST_REGNUM; regno++)
|
for (regno = FP0_REGNUM; regno <= FPLAST_REGNUM; regno++)
|
store_register (regno);
|
store_register (regno);
|
|
|
/* write special registers. */
|
/* write special registers. */
|
|
|
for (regno = FIRST_UISA_SP_REGNUM; regno <= LAST_UISA_SP_REGNUM; regno++)
|
for (regno = FIRST_UISA_SP_REGNUM; regno <= LAST_UISA_SP_REGNUM; regno++)
|
store_register (regno);
|
store_register (regno);
|
}
|
}
|
}
|
}
|
|
|
/* Store in *TO the 32-bit word at 32-bit-aligned ADDR in the child
|
/* Store in *TO the 32-bit word at 32-bit-aligned ADDR in the child
|
process, which is 64-bit if ARCH64 and 32-bit otherwise. Return
|
process, which is 64-bit if ARCH64 and 32-bit otherwise. Return
|
success. */
|
success. */
|
|
|
static int
|
static int
|
read_word (CORE_ADDR from, int *to, int arch64)
|
read_word (CORE_ADDR from, int *to, int arch64)
|
{
|
{
|
/* Retrieved values may be -1, so infer errors from errno. */
|
/* Retrieved values may be -1, so infer errors from errno. */
|
errno = 0;
|
errno = 0;
|
|
|
if (arch64)
|
if (arch64)
|
*to = ptrace64 (PT_READ_I, PIDGET (inferior_ptid), from, 0, NULL);
|
*to = ptrace64 (PT_READ_I, PIDGET (inferior_ptid), from, 0, NULL);
|
else
|
else
|
*to = ptrace32 (PT_READ_I, PIDGET (inferior_ptid), (int *)(long) from,
|
*to = ptrace32 (PT_READ_I, PIDGET (inferior_ptid), (int *)(long) from,
|
0, NULL);
|
0, NULL);
|
|
|
return !errno;
|
return !errno;
|
}
|
}
|
|
|
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
|
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
|
to debugger memory starting at MYADDR. Copy to inferior if
|
to debugger memory starting at MYADDR. Copy to inferior if
|
WRITE is nonzero.
|
WRITE is nonzero.
|
|
|
Returns the length copied, which is either the LEN argument or zero.
|
Returns the length copied, which is either the LEN argument or zero.
|
This xfer function does not do partial moves, since child_ops
|
This xfer function does not do partial moves, since child_ops
|
doesn't allow memory operations to cross below us in the target stack
|
doesn't allow memory operations to cross below us in the target stack
|
anyway. */
|
anyway. */
|
|
|
int
|
int
|
child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
|
child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
|
int write, struct mem_attrib *attrib,
|
int write, struct mem_attrib *attrib,
|
struct target_ops *target)
|
struct target_ops *target)
|
{
|
{
|
/* Round starting address down to 32-bit word boundary. */
|
/* Round starting address down to 32-bit word boundary. */
|
int mask = sizeof (int) - 1;
|
int mask = sizeof (int) - 1;
|
CORE_ADDR addr = memaddr & ~(CORE_ADDR)mask;
|
CORE_ADDR addr = memaddr & ~(CORE_ADDR)mask;
|
|
|
/* Round ending address up to 32-bit word boundary. */
|
/* Round ending address up to 32-bit word boundary. */
|
int count = ((memaddr + len - addr + mask) & ~(CORE_ADDR)mask)
|
int count = ((memaddr + len - addr + mask) & ~(CORE_ADDR)mask)
|
/ sizeof (int);
|
/ sizeof (int);
|
|
|
/* Allocate word transfer buffer. */
|
/* Allocate word transfer buffer. */
|
int *buf = (int *) alloca (count * sizeof (int));
|
int *buf = (int *) alloca (count * sizeof (int));
|
|
|
int arch64 = ARCH64 ();
|
int arch64 = ARCH64 ();
|
int i;
|
int i;
|
|
|
if (!write)
|
if (!write)
|
{
|
{
|
/* Retrieve memory a word at a time. */
|
/* Retrieve memory a word at a time. */
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
{
|
{
|
if (!read_word (addr, buf + i, arch64))
|
if (!read_word (addr, buf + i, arch64))
|
return 0;
|
return 0;
|
QUIT;
|
QUIT;
|
}
|
}
|
|
|
/* Copy memory to supplied buffer. */
|
/* Copy memory to supplied buffer. */
|
addr -= count * sizeof (int);
|
addr -= count * sizeof (int);
|
memcpy (myaddr, (char *)buf + (memaddr - addr), len);
|
memcpy (myaddr, (char *)buf + (memaddr - addr), len);
|
}
|
}
|
else
|
else
|
{
|
{
|
/* Fetch leading memory needed for alignment. */
|
/* Fetch leading memory needed for alignment. */
|
if (addr < memaddr)
|
if (addr < memaddr)
|
if (!read_word (addr, buf, arch64))
|
if (!read_word (addr, buf, arch64))
|
return 0;
|
return 0;
|
|
|
/* Fetch trailing memory needed for alignment. */
|
/* Fetch trailing memory needed for alignment. */
|
if (addr + count * sizeof (int) > memaddr + len)
|
if (addr + count * sizeof (int) > memaddr + len)
|
if (!read_word (addr, buf + count - 1, arch64))
|
if (!read_word (addr, buf + count - 1, arch64))
|
return 0;
|
return 0;
|
|
|
/* Copy supplied data into memory buffer. */
|
/* Copy supplied data into memory buffer. */
|
memcpy ((char *)buf + (memaddr - addr), myaddr, len);
|
memcpy ((char *)buf + (memaddr - addr), myaddr, len);
|
|
|
/* Store memory one word at a time. */
|
/* Store memory one word at a time. */
|
for (i = 0, errno = 0; i < count; i++, addr += sizeof (int))
|
for (i = 0, errno = 0; i < count; i++, addr += sizeof (int))
|
{
|
{
|
if (arch64)
|
if (arch64)
|
ptrace64 (PT_WRITE_D, PIDGET (inferior_ptid), addr, buf[i], NULL);
|
ptrace64 (PT_WRITE_D, PIDGET (inferior_ptid), addr, buf[i], NULL);
|
else
|
else
|
ptrace32 (PT_WRITE_D, PIDGET (inferior_ptid), (int *)(long) addr,
|
ptrace32 (PT_WRITE_D, PIDGET (inferior_ptid), (int *)(long) addr,
|
buf[i], NULL);
|
buf[i], NULL);
|
|
|
if (errno)
|
if (errno)
|
return 0;
|
return 0;
|
QUIT;
|
QUIT;
|
}
|
}
|
}
|
}
|
|
|
return len;
|
return len;
|
}
|
}
|
|
|
/* Execute one dummy breakpoint instruction. This way we give the kernel
|
/* Execute one dummy breakpoint instruction. This way we give the kernel
|
a chance to do some housekeeping and update inferior's internal data,
|
a chance to do some housekeeping and update inferior's internal data,
|
including u_area. */
|
including u_area. */
|
|
|
static void
|
static void
|
exec_one_dummy_insn (void)
|
exec_one_dummy_insn (void)
|
{
|
{
|
#define DUMMY_INSN_ADDR (TEXT_SEGMENT_BASE)+0x200
|
#define DUMMY_INSN_ADDR (TEXT_SEGMENT_BASE)+0x200
|
|
|
char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
|
char shadow_contents[BREAKPOINT_MAX]; /* Stash old bkpt addr contents */
|
int ret, status, pid;
|
int ret, status, pid;
|
CORE_ADDR prev_pc;
|
CORE_ADDR prev_pc;
|
|
|
/* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
|
/* We plant one dummy breakpoint into DUMMY_INSN_ADDR address. We
|
assume that this address will never be executed again by the real
|
assume that this address will never be executed again by the real
|
code. */
|
code. */
|
|
|
target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
|
target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
|
|
|
/* You might think this could be done with a single ptrace call, and
|
/* You might think this could be done with a single ptrace call, and
|
you'd be correct for just about every platform I've ever worked
|
you'd be correct for just about every platform I've ever worked
|
on. However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
|
on. However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
|
the inferior never hits the breakpoint (it's also worth noting
|
the inferior never hits the breakpoint (it's also worth noting
|
powerpc-ibm-aix4.1.3 works correctly). */
|
powerpc-ibm-aix4.1.3 works correctly). */
|
prev_pc = read_pc ();
|
prev_pc = read_pc ();
|
write_pc (DUMMY_INSN_ADDR);
|
write_pc (DUMMY_INSN_ADDR);
|
if (ARCH64 ())
|
if (ARCH64 ())
|
ret = ptrace64 (PT_CONTINUE, PIDGET (inferior_ptid), 1, 0, NULL);
|
ret = ptrace64 (PT_CONTINUE, PIDGET (inferior_ptid), 1, 0, NULL);
|
else
|
else
|
ret = ptrace32 (PT_CONTINUE, PIDGET (inferior_ptid), (int *)1, 0, NULL);
|
ret = ptrace32 (PT_CONTINUE, PIDGET (inferior_ptid), (int *)1, 0, NULL);
|
|
|
if (ret != 0)
|
if (ret != 0)
|
perror ("pt_continue");
|
perror ("pt_continue");
|
|
|
do
|
do
|
{
|
{
|
pid = wait (&status);
|
pid = wait (&status);
|
}
|
}
|
while (pid != PIDGET (inferior_ptid));
|
while (pid != PIDGET (inferior_ptid));
|
|
|
write_pc (prev_pc);
|
write_pc (prev_pc);
|
target_remove_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
|
target_remove_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
|
}
|
}
|
|
|
/* Fetch registers from the register section in core bfd. */
|
/* Fetch registers from the register section in core bfd. */
|
|
|
static void
|
static void
|
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
|
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
|
int which, CORE_ADDR reg_addr)
|
int which, CORE_ADDR reg_addr)
|
{
|
{
|
CoreRegs *regs;
|
CoreRegs *regs;
|
double *fprs;
|
double *fprs;
|
int arch64, i, size;
|
int arch64, i, size;
|
void *gprs, *sprs[7];
|
void *gprs, *sprs[7];
|
|
|
if (which != 0)
|
if (which != 0)
|
{
|
{
|
fprintf_unfiltered
|
fprintf_unfiltered
|
(gdb_stderr,
|
(gdb_stderr,
|
"Gdb error: unknown parameter to fetch_core_registers().\n");
|
"Gdb error: unknown parameter to fetch_core_registers().\n");
|
return;
|
return;
|
}
|
}
|
|
|
arch64 = ARCH64 ();
|
arch64 = ARCH64 ();
|
regs = (CoreRegs *) core_reg_sect;
|
regs = (CoreRegs *) core_reg_sect;
|
|
|
/* Retrieve register pointers. */
|
/* Retrieve register pointers. */
|
|
|
if (arch64)
|
if (arch64)
|
{
|
{
|
gprs = regs->r64.gpr;
|
gprs = regs->r64.gpr;
|
fprs = regs->r64.fpr;
|
fprs = regs->r64.fpr;
|
sprs[0] = ®s->r64.iar;
|
sprs[0] = ®s->r64.iar;
|
sprs[1] = ®s->r64.msr;
|
sprs[1] = ®s->r64.msr;
|
sprs[2] = ®s->r64.cr;
|
sprs[2] = ®s->r64.cr;
|
sprs[3] = ®s->r64.lr;
|
sprs[3] = ®s->r64.lr;
|
sprs[4] = ®s->r64.ctr;
|
sprs[4] = ®s->r64.ctr;
|
sprs[5] = ®s->r64.xer;
|
sprs[5] = ®s->r64.xer;
|
}
|
}
|
else
|
else
|
{
|
{
|
gprs = regs->r32.gpr;
|
gprs = regs->r32.gpr;
|
fprs = regs->r32.fpr;
|
fprs = regs->r32.fpr;
|
sprs[0] = ®s->r32.iar;
|
sprs[0] = ®s->r32.iar;
|
sprs[1] = ®s->r32.msr;
|
sprs[1] = ®s->r32.msr;
|
sprs[2] = ®s->r32.cr;
|
sprs[2] = ®s->r32.cr;
|
sprs[3] = ®s->r32.lr;
|
sprs[3] = ®s->r32.lr;
|
sprs[4] = ®s->r32.ctr;
|
sprs[4] = ®s->r32.ctr;
|
sprs[5] = ®s->r32.xer;
|
sprs[5] = ®s->r32.xer;
|
sprs[6] = ®s->r32.mq;
|
sprs[6] = ®s->r32.mq;
|
}
|
}
|
|
|
/* Copy from pointers to registers[]. */
|
/* Copy from pointers to registers[]. */
|
|
|
memcpy (registers, gprs, 32 * (arch64 ? 8 : 4));
|
memcpy (registers, gprs, 32 * (arch64 ? 8 : 4));
|
memcpy (registers + REGISTER_BYTE (FP0_REGNUM), fprs, 32 * 8);
|
memcpy (registers + REGISTER_BYTE (FP0_REGNUM), fprs, 32 * 8);
|
for (i = FIRST_UISA_SP_REGNUM; i <= LAST_UISA_SP_REGNUM; i++)
|
for (i = FIRST_UISA_SP_REGNUM; i <= LAST_UISA_SP_REGNUM; i++)
|
{
|
{
|
size = REGISTER_RAW_SIZE (i);
|
size = REGISTER_RAW_SIZE (i);
|
if (size)
|
if (size)
|
memcpy (registers + REGISTER_BYTE (i),
|
memcpy (registers + REGISTER_BYTE (i),
|
sprs[i - FIRST_UISA_SP_REGNUM], size);
|
sprs[i - FIRST_UISA_SP_REGNUM], size);
|
}
|
}
|
}
|
}
|
|
|
|
|
/* Copy information about text and data sections from LDI to VP for a 64-bit
|
/* Copy information about text and data sections from LDI to VP for a 64-bit
|
process if ARCH64 and for a 32-bit process otherwise. */
|
process if ARCH64 and for a 32-bit process otherwise. */
|
|
|
static void
|
static void
|
vmap_secs (struct vmap *vp, LdInfo *ldi, int arch64)
|
vmap_secs (struct vmap *vp, LdInfo *ldi, int arch64)
|
{
|
{
|
if (arch64)
|
if (arch64)
|
{
|
{
|
vp->tstart = (CORE_ADDR) ldi->l64.ldinfo_textorg;
|
vp->tstart = (CORE_ADDR) ldi->l64.ldinfo_textorg;
|
vp->tend = vp->tstart + ldi->l64.ldinfo_textsize;
|
vp->tend = vp->tstart + ldi->l64.ldinfo_textsize;
|
vp->dstart = (CORE_ADDR) ldi->l64.ldinfo_dataorg;
|
vp->dstart = (CORE_ADDR) ldi->l64.ldinfo_dataorg;
|
vp->dend = vp->dstart + ldi->l64.ldinfo_datasize;
|
vp->dend = vp->dstart + ldi->l64.ldinfo_datasize;
|
}
|
}
|
else
|
else
|
{
|
{
|
vp->tstart = (unsigned long) ldi->l32.ldinfo_textorg;
|
vp->tstart = (unsigned long) ldi->l32.ldinfo_textorg;
|
vp->tend = vp->tstart + ldi->l32.ldinfo_textsize;
|
vp->tend = vp->tstart + ldi->l32.ldinfo_textsize;
|
vp->dstart = (unsigned long) ldi->l32.ldinfo_dataorg;
|
vp->dstart = (unsigned long) ldi->l32.ldinfo_dataorg;
|
vp->dend = vp->dstart + ldi->l32.ldinfo_datasize;
|
vp->dend = vp->dstart + ldi->l32.ldinfo_datasize;
|
}
|
}
|
|
|
/* The run time loader maps the file header in addition to the text
|
/* The run time loader maps the file header in addition to the text
|
section and returns a pointer to the header in ldinfo_textorg.
|
section and returns a pointer to the header in ldinfo_textorg.
|
Adjust the text start address to point to the real start address
|
Adjust the text start address to point to the real start address
|
of the text section. */
|
of the text section. */
|
vp->tstart += vp->toffs;
|
vp->tstart += vp->toffs;
|
}
|
}
|
|
|
/* handle symbol translation on vmapping */
|
/* handle symbol translation on vmapping */
|
|
|
static void
|
static void
|
vmap_symtab (struct vmap *vp)
|
vmap_symtab (struct vmap *vp)
|
{
|
{
|
register struct objfile *objfile;
|
register struct objfile *objfile;
|
struct section_offsets *new_offsets;
|
struct section_offsets *new_offsets;
|
int i;
|
int i;
|
|
|
objfile = vp->objfile;
|
objfile = vp->objfile;
|
if (objfile == NULL)
|
if (objfile == NULL)
|
{
|
{
|
/* OK, it's not an objfile we opened ourselves.
|
/* OK, it's not an objfile we opened ourselves.
|
Currently, that can only happen with the exec file, so
|
Currently, that can only happen with the exec file, so
|
relocate the symbols for the symfile. */
|
relocate the symbols for the symfile. */
|
if (symfile_objfile == NULL)
|
if (symfile_objfile == NULL)
|
return;
|
return;
|
objfile = symfile_objfile;
|
objfile = symfile_objfile;
|
}
|
}
|
else if (!vp->loaded)
|
else if (!vp->loaded)
|
/* If symbols are not yet loaded, offsets are not yet valid. */
|
/* If symbols are not yet loaded, offsets are not yet valid. */
|
return;
|
return;
|
|
|
new_offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
|
new_offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
|
|
|
for (i = 0; i < objfile->num_sections; ++i)
|
for (i = 0; i < objfile->num_sections; ++i)
|
new_offsets->offsets[i] = ANOFFSET (objfile->section_offsets, i);
|
new_offsets->offsets[i] = ANOFFSET (objfile->section_offsets, i);
|
|
|
/* The symbols in the object file are linked to the VMA of the section,
|
/* The symbols in the object file are linked to the VMA of the section,
|
relocate them VMA relative. */
|
relocate them VMA relative. */
|
new_offsets->offsets[SECT_OFF_TEXT (objfile)] = vp->tstart - vp->tvma;
|
new_offsets->offsets[SECT_OFF_TEXT (objfile)] = vp->tstart - vp->tvma;
|
new_offsets->offsets[SECT_OFF_DATA (objfile)] = vp->dstart - vp->dvma;
|
new_offsets->offsets[SECT_OFF_DATA (objfile)] = vp->dstart - vp->dvma;
|
new_offsets->offsets[SECT_OFF_BSS (objfile)] = vp->dstart - vp->dvma;
|
new_offsets->offsets[SECT_OFF_BSS (objfile)] = vp->dstart - vp->dvma;
|
|
|
objfile_relocate (objfile, new_offsets);
|
objfile_relocate (objfile, new_offsets);
|
}
|
}
|
|
|
/* Add symbols for an objfile. */
|
/* Add symbols for an objfile. */
|
|
|
static int
|
static int
|
objfile_symbol_add (void *arg)
|
objfile_symbol_add (void *arg)
|
{
|
{
|
struct objfile *obj = (struct objfile *) arg;
|
struct objfile *obj = (struct objfile *) arg;
|
|
|
syms_from_objfile (obj, NULL, 0, 0);
|
syms_from_objfile (obj, NULL, 0, 0);
|
new_symfile_objfile (obj, 0, 0);
|
new_symfile_objfile (obj, 0, 0);
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Add symbols for a vmap. Return zero upon error. */
|
/* Add symbols for a vmap. Return zero upon error. */
|
|
|
int
|
int
|
vmap_add_symbols (struct vmap *vp)
|
vmap_add_symbols (struct vmap *vp)
|
{
|
{
|
if (catch_errors (objfile_symbol_add, vp->objfile,
|
if (catch_errors (objfile_symbol_add, vp->objfile,
|
"Error while reading shared library symbols:\n",
|
"Error while reading shared library symbols:\n",
|
RETURN_MASK_ALL))
|
RETURN_MASK_ALL))
|
{
|
{
|
/* Note this is only done if symbol reading was successful. */
|
/* Note this is only done if symbol reading was successful. */
|
vp->loaded = 1;
|
vp->loaded = 1;
|
vmap_symtab (vp);
|
vmap_symtab (vp);
|
return 1;
|
return 1;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Add a new vmap entry based on ldinfo() information.
|
/* Add a new vmap entry based on ldinfo() information.
|
|
|
If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
|
If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
|
core file), the caller should set it to -1, and we will open the file.
|
core file), the caller should set it to -1, and we will open the file.
|
|
|
Return the vmap new entry. */
|
Return the vmap new entry. */
|
|
|
static struct vmap *
|
static struct vmap *
|
add_vmap (LdInfo *ldi)
|
add_vmap (LdInfo *ldi)
|
{
|
{
|
bfd *abfd, *last;
|
bfd *abfd, *last;
|
register char *mem, *objname, *filename;
|
register char *mem, *objname, *filename;
|
struct objfile *obj;
|
struct objfile *obj;
|
struct vmap *vp;
|
struct vmap *vp;
|
int fd;
|
int fd;
|
ARCH64_DECL (arch64);
|
ARCH64_DECL (arch64);
|
|
|
/* This ldi structure was allocated using alloca() in
|
/* This ldi structure was allocated using alloca() in
|
xcoff_relocate_symtab(). Now we need to have persistent object
|
xcoff_relocate_symtab(). Now we need to have persistent object
|
and member names, so we should save them. */
|
and member names, so we should save them. */
|
|
|
filename = LDI_FILENAME (ldi, arch64);
|
filename = LDI_FILENAME (ldi, arch64);
|
mem = filename + strlen (filename) + 1;
|
mem = filename + strlen (filename) + 1;
|
mem = savestring (mem, strlen (mem));
|
mem = savestring (mem, strlen (mem));
|
objname = savestring (filename, strlen (filename));
|
objname = savestring (filename, strlen (filename));
|
|
|
fd = LDI_FD (ldi, arch64);
|
fd = LDI_FD (ldi, arch64);
|
if (fd < 0)
|
if (fd < 0)
|
/* Note that this opens it once for every member; a possible
|
/* Note that this opens it once for every member; a possible
|
enhancement would be to only open it once for every object. */
|
enhancement would be to only open it once for every object. */
|
abfd = bfd_openr (objname, gnutarget);
|
abfd = bfd_openr (objname, gnutarget);
|
else
|
else
|
abfd = bfd_fdopenr (objname, gnutarget, fd);
|
abfd = bfd_fdopenr (objname, gnutarget, fd);
|
if (!abfd)
|
if (!abfd)
|
{
|
{
|
warning ("Could not open `%s' as an executable file: %s",
|
warning ("Could not open `%s' as an executable file: %s",
|
objname, bfd_errmsg (bfd_get_error ()));
|
objname, bfd_errmsg (bfd_get_error ()));
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* make sure we have an object file */
|
/* make sure we have an object file */
|
|
|
if (bfd_check_format (abfd, bfd_object))
|
if (bfd_check_format (abfd, bfd_object))
|
vp = map_vmap (abfd, 0);
|
vp = map_vmap (abfd, 0);
|
|
|
else if (bfd_check_format (abfd, bfd_archive))
|
else if (bfd_check_format (abfd, bfd_archive))
|
{
|
{
|
last = 0;
|
last = 0;
|
/* FIXME??? am I tossing BFDs? bfd? */
|
/* FIXME??? am I tossing BFDs? bfd? */
|
while ((last = bfd_openr_next_archived_file (abfd, last)))
|
while ((last = bfd_openr_next_archived_file (abfd, last)))
|
if (STREQ (mem, last->filename))
|
if (STREQ (mem, last->filename))
|
break;
|
break;
|
|
|
if (!last)
|
if (!last)
|
{
|
{
|
warning ("\"%s\": member \"%s\" missing.", objname, mem);
|
warning ("\"%s\": member \"%s\" missing.", objname, mem);
|
bfd_close (abfd);
|
bfd_close (abfd);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
if (!bfd_check_format (last, bfd_object))
|
if (!bfd_check_format (last, bfd_object))
|
{
|
{
|
warning ("\"%s\": member \"%s\" not in executable format: %s.",
|
warning ("\"%s\": member \"%s\" not in executable format: %s.",
|
objname, mem, bfd_errmsg (bfd_get_error ()));
|
objname, mem, bfd_errmsg (bfd_get_error ()));
|
bfd_close (last);
|
bfd_close (last);
|
bfd_close (abfd);
|
bfd_close (abfd);
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
vp = map_vmap (last, abfd);
|
vp = map_vmap (last, abfd);
|
}
|
}
|
else
|
else
|
{
|
{
|
warning ("\"%s\": not in executable format: %s.",
|
warning ("\"%s\": not in executable format: %s.",
|
objname, bfd_errmsg (bfd_get_error ()));
|
objname, bfd_errmsg (bfd_get_error ()));
|
bfd_close (abfd);
|
bfd_close (abfd);
|
return NULL;
|
return NULL;
|
}
|
}
|
obj = allocate_objfile (vp->bfd, 0);
|
obj = allocate_objfile (vp->bfd, 0);
|
vp->objfile = obj;
|
vp->objfile = obj;
|
|
|
/* Always add symbols for the main objfile. */
|
/* Always add symbols for the main objfile. */
|
if (vp == vmap || auto_solib_add)
|
if (vp == vmap || auto_solib_add)
|
vmap_add_symbols (vp);
|
vmap_add_symbols (vp);
|
return vp;
|
return vp;
|
}
|
}
|
|
|
/* update VMAP info with ldinfo() information
|
/* update VMAP info with ldinfo() information
|
Input is ptr to ldinfo() results. */
|
Input is ptr to ldinfo() results. */
|
|
|
static void
|
static void
|
vmap_ldinfo (LdInfo *ldi)
|
vmap_ldinfo (LdInfo *ldi)
|
{
|
{
|
struct stat ii, vi;
|
struct stat ii, vi;
|
register struct vmap *vp;
|
register struct vmap *vp;
|
int got_one, retried;
|
int got_one, retried;
|
int got_exec_file = 0;
|
int got_exec_file = 0;
|
uint next;
|
uint next;
|
int arch64 = ARCH64 ();
|
int arch64 = ARCH64 ();
|
|
|
/* For each *ldi, see if we have a corresponding *vp.
|
/* For each *ldi, see if we have a corresponding *vp.
|
If so, update the mapping, and symbol table.
|
If so, update the mapping, and symbol table.
|
If not, add an entry and symbol table. */
|
If not, add an entry and symbol table. */
|
|
|
do
|
do
|
{
|
{
|
char *name = LDI_FILENAME (ldi, arch64);
|
char *name = LDI_FILENAME (ldi, arch64);
|
char *memb = name + strlen (name) + 1;
|
char *memb = name + strlen (name) + 1;
|
int fd = LDI_FD (ldi, arch64);
|
int fd = LDI_FD (ldi, arch64);
|
|
|
retried = 0;
|
retried = 0;
|
|
|
if (fstat (fd, &ii) < 0)
|
if (fstat (fd, &ii) < 0)
|
{
|
{
|
/* The kernel sets ld_info to -1, if the process is still using the
|
/* The kernel sets ld_info to -1, if the process is still using the
|
object, and the object is removed. Keep the symbol info for the
|
object, and the object is removed. Keep the symbol info for the
|
removed object and issue a warning. */
|
removed object and issue a warning. */
|
warning ("%s (fd=%d) has disappeared, keeping its symbols",
|
warning ("%s (fd=%d) has disappeared, keeping its symbols",
|
name, fd);
|
name, fd);
|
continue;
|
continue;
|
}
|
}
|
retry:
|
retry:
|
for (got_one = 0, vp = vmap; vp; vp = vp->nxt)
|
for (got_one = 0, vp = vmap; vp; vp = vp->nxt)
|
{
|
{
|
struct objfile *objfile;
|
struct objfile *objfile;
|
|
|
/* First try to find a `vp', which is the same as in ldinfo.
|
/* First try to find a `vp', which is the same as in ldinfo.
|
If not the same, just continue and grep the next `vp'. If same,
|
If not the same, just continue and grep the next `vp'. If same,
|
relocate its tstart, tend, dstart, dend values. If no such `vp'
|
relocate its tstart, tend, dstart, dend values. If no such `vp'
|
found, get out of this for loop, add this ldi entry as a new vmap
|
found, get out of this for loop, add this ldi entry as a new vmap
|
(add_vmap) and come back, find its `vp' and so on... */
|
(add_vmap) and come back, find its `vp' and so on... */
|
|
|
/* The filenames are not always sufficient to match on. */
|
/* The filenames are not always sufficient to match on. */
|
|
|
if ((name[0] == '/' && !STREQ (name, vp->name))
|
if ((name[0] == '/' && !STREQ (name, vp->name))
|
|| (memb[0] && !STREQ (memb, vp->member)))
|
|| (memb[0] && !STREQ (memb, vp->member)))
|
continue;
|
continue;
|
|
|
/* See if we are referring to the same file.
|
/* See if we are referring to the same file.
|
We have to check objfile->obfd, symfile.c:reread_symbols might
|
We have to check objfile->obfd, symfile.c:reread_symbols might
|
have updated the obfd after a change. */
|
have updated the obfd after a change. */
|
objfile = vp->objfile == NULL ? symfile_objfile : vp->objfile;
|
objfile = vp->objfile == NULL ? symfile_objfile : vp->objfile;
|
if (objfile == NULL
|
if (objfile == NULL
|
|| objfile->obfd == NULL
|
|| objfile->obfd == NULL
|
|| bfd_stat (objfile->obfd, &vi) < 0)
|
|| bfd_stat (objfile->obfd, &vi) < 0)
|
{
|
{
|
warning ("Unable to stat %s, keeping its symbols", name);
|
warning ("Unable to stat %s, keeping its symbols", name);
|
continue;
|
continue;
|
}
|
}
|
|
|
if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
|
if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
|
continue;
|
continue;
|
|
|
if (!retried)
|
if (!retried)
|
close (fd);
|
close (fd);
|
|
|
++got_one;
|
++got_one;
|
|
|
/* Found a corresponding VMAP. Remap! */
|
/* Found a corresponding VMAP. Remap! */
|
|
|
vmap_secs (vp, ldi, arch64);
|
vmap_secs (vp, ldi, arch64);
|
|
|
/* The objfile is only NULL for the exec file. */
|
/* The objfile is only NULL for the exec file. */
|
if (vp->objfile == NULL)
|
if (vp->objfile == NULL)
|
got_exec_file = 1;
|
got_exec_file = 1;
|
|
|
/* relocate symbol table(s). */
|
/* relocate symbol table(s). */
|
vmap_symtab (vp);
|
vmap_symtab (vp);
|
|
|
/* There may be more, so we don't break out of the loop. */
|
/* There may be more, so we don't break out of the loop. */
|
}
|
}
|
|
|
/* if there was no matching *vp, we must perforce create the sucker(s) */
|
/* if there was no matching *vp, we must perforce create the sucker(s) */
|
if (!got_one && !retried)
|
if (!got_one && !retried)
|
{
|
{
|
add_vmap (ldi);
|
add_vmap (ldi);
|
++retried;
|
++retried;
|
goto retry;
|
goto retry;
|
}
|
}
|
}
|
}
|
while ((next = LDI_NEXT (ldi, arch64))
|
while ((next = LDI_NEXT (ldi, arch64))
|
&& (ldi = (void *) (next + (char *) ldi)));
|
&& (ldi = (void *) (next + (char *) ldi)));
|
|
|
/* If we don't find the symfile_objfile anywhere in the ldinfo, it
|
/* If we don't find the symfile_objfile anywhere in the ldinfo, it
|
is unlikely that the symbol file is relocated to the proper
|
is unlikely that the symbol file is relocated to the proper
|
address. And we might have attached to a process which is
|
address. And we might have attached to a process which is
|
running a different copy of the same executable. */
|
running a different copy of the same executable. */
|
if (symfile_objfile != NULL && !got_exec_file)
|
if (symfile_objfile != NULL && !got_exec_file)
|
{
|
{
|
warning_begin ();
|
warning_begin ();
|
fputs_unfiltered ("Symbol file ", gdb_stderr);
|
fputs_unfiltered ("Symbol file ", gdb_stderr);
|
fputs_unfiltered (symfile_objfile->name, gdb_stderr);
|
fputs_unfiltered (symfile_objfile->name, gdb_stderr);
|
fputs_unfiltered ("\nis not mapped; discarding it.\n\
|
fputs_unfiltered ("\nis not mapped; discarding it.\n\
|
If in fact that file has symbols which the mapped files listed by\n\
|
If in fact that file has symbols which the mapped files listed by\n\
|
\"info files\" lack, you can load symbols with the \"symbol-file\" or\n\
|
\"info files\" lack, you can load symbols with the \"symbol-file\" or\n\
|
\"add-symbol-file\" commands (note that you must take care of relocating\n\
|
\"add-symbol-file\" commands (note that you must take care of relocating\n\
|
symbols to the proper address).\n", gdb_stderr);
|
symbols to the proper address).\n", gdb_stderr);
|
free_objfile (symfile_objfile);
|
free_objfile (symfile_objfile);
|
symfile_objfile = NULL;
|
symfile_objfile = NULL;
|
}
|
}
|
breakpoint_re_set ();
|
breakpoint_re_set ();
|
}
|
}
|
|
|
/* As well as symbol tables, exec_sections need relocation. After
|
/* As well as symbol tables, exec_sections need relocation. After
|
the inferior process' termination, there will be a relocated symbol
|
the inferior process' termination, there will be a relocated symbol
|
table exist with no corresponding inferior process. At that time, we
|
table exist with no corresponding inferior process. At that time, we
|
need to use `exec' bfd, rather than the inferior process's memory space
|
need to use `exec' bfd, rather than the inferior process's memory space
|
to look up symbols.
|
to look up symbols.
|
|
|
`exec_sections' need to be relocated only once, as long as the exec
|
`exec_sections' need to be relocated only once, as long as the exec
|
file remains unchanged.
|
file remains unchanged.
|
*/
|
*/
|
|
|
static void
|
static void
|
vmap_exec (void)
|
vmap_exec (void)
|
{
|
{
|
static bfd *execbfd;
|
static bfd *execbfd;
|
int i;
|
int i;
|
|
|
if (execbfd == exec_bfd)
|
if (execbfd == exec_bfd)
|
return;
|
return;
|
|
|
execbfd = exec_bfd;
|
execbfd = exec_bfd;
|
|
|
if (!vmap || !exec_ops.to_sections)
|
if (!vmap || !exec_ops.to_sections)
|
error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
|
error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
|
|
|
for (i = 0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
|
for (i = 0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
|
{
|
{
|
if (STREQ (".text", exec_ops.to_sections[i].the_bfd_section->name))
|
if (STREQ (".text", exec_ops.to_sections[i].the_bfd_section->name))
|
{
|
{
|
exec_ops.to_sections[i].addr += vmap->tstart - vmap->tvma;
|
exec_ops.to_sections[i].addr += vmap->tstart - vmap->tvma;
|
exec_ops.to_sections[i].endaddr += vmap->tstart - vmap->tvma;
|
exec_ops.to_sections[i].endaddr += vmap->tstart - vmap->tvma;
|
}
|
}
|
else if (STREQ (".data", exec_ops.to_sections[i].the_bfd_section->name))
|
else if (STREQ (".data", exec_ops.to_sections[i].the_bfd_section->name))
|
{
|
{
|
exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
|
exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
|
exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
|
exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
|
}
|
}
|
else if (STREQ (".bss", exec_ops.to_sections[i].the_bfd_section->name))
|
else if (STREQ (".bss", exec_ops.to_sections[i].the_bfd_section->name))
|
{
|
{
|
exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
|
exec_ops.to_sections[i].addr += vmap->dstart - vmap->dvma;
|
exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
|
exec_ops.to_sections[i].endaddr += vmap->dstart - vmap->dvma;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Set the current architecture from the host running GDB. Called when
|
/* Set the current architecture from the host running GDB. Called when
|
starting a child process. */
|
starting a child process. */
|
|
|
static void
|
static void
|
set_host_arch (int pid)
|
set_host_arch (int pid)
|
{
|
{
|
enum bfd_architecture arch;
|
enum bfd_architecture arch;
|
unsigned long mach;
|
unsigned long mach;
|
bfd abfd;
|
bfd abfd;
|
struct gdbarch_info info;
|
struct gdbarch_info info;
|
|
|
if (__power_rs ())
|
if (__power_rs ())
|
{
|
{
|
arch = bfd_arch_rs6000;
|
arch = bfd_arch_rs6000;
|
mach = bfd_mach_rs6k;
|
mach = bfd_mach_rs6k;
|
}
|
}
|
else
|
else
|
{
|
{
|
arch = bfd_arch_powerpc;
|
arch = bfd_arch_powerpc;
|
mach = bfd_mach_ppc;
|
mach = bfd_mach_ppc;
|
}
|
}
|
bfd_default_set_arch_mach (&abfd, arch, mach);
|
bfd_default_set_arch_mach (&abfd, arch, mach);
|
|
|
memset (&info, 0, sizeof info);
|
memset (&info, 0, sizeof info);
|
info.bfd_arch_info = bfd_get_arch_info (&abfd);
|
info.bfd_arch_info = bfd_get_arch_info (&abfd);
|
|
|
if (!gdbarch_update_p (info))
|
if (!gdbarch_update_p (info))
|
{
|
{
|
internal_error (__FILE__, __LINE__,
|
internal_error (__FILE__, __LINE__,
|
"set_host_arch: failed to select architecture");
|
"set_host_arch: failed to select architecture");
|
}
|
}
|
}
|
}
|
|
|
|
|
/* xcoff_relocate_symtab - hook for symbol table relocation.
|
/* xcoff_relocate_symtab - hook for symbol table relocation.
|
also reads shared libraries.. */
|
also reads shared libraries.. */
|
|
|
void
|
void
|
xcoff_relocate_symtab (unsigned int pid)
|
xcoff_relocate_symtab (unsigned int pid)
|
{
|
{
|
int load_segs = 64; /* number of load segments */
|
int load_segs = 64; /* number of load segments */
|
int rc;
|
int rc;
|
LdInfo *ldi = NULL;
|
LdInfo *ldi = NULL;
|
int arch64 = ARCH64 ();
|
int arch64 = ARCH64 ();
|
int ldisize = arch64 ? sizeof (ldi->l64) : sizeof (ldi->l32);
|
int ldisize = arch64 ? sizeof (ldi->l64) : sizeof (ldi->l32);
|
int size;
|
int size;
|
|
|
do
|
do
|
{
|
{
|
size = load_segs * ldisize;
|
size = load_segs * ldisize;
|
ldi = (void *) xrealloc (ldi, size);
|
ldi = (void *) xrealloc (ldi, size);
|
|
|
#if 0
|
#if 0
|
/* According to my humble theory, AIX has some timing problems and
|
/* According to my humble theory, AIX has some timing problems and
|
when the user stack grows, kernel doesn't update stack info in time
|
when the user stack grows, kernel doesn't update stack info in time
|
and ptrace calls step on user stack. That is why we sleep here a
|
and ptrace calls step on user stack. That is why we sleep here a
|
little, and give kernel to update its internals. */
|
little, and give kernel to update its internals. */
|
usleep (36000);
|
usleep (36000);
|
#endif
|
#endif
|
|
|
if (arch64)
|
if (arch64)
|
rc = ptrace64 (PT_LDINFO, pid, (unsigned long) ldi, size, NULL);
|
rc = ptrace64 (PT_LDINFO, pid, (unsigned long) ldi, size, NULL);
|
else
|
else
|
rc = ptrace32 (PT_LDINFO, pid, (int *) ldi, size, NULL);
|
rc = ptrace32 (PT_LDINFO, pid, (int *) ldi, size, NULL);
|
|
|
if (rc == -1)
|
if (rc == -1)
|
{
|
{
|
if (errno == ENOMEM)
|
if (errno == ENOMEM)
|
load_segs *= 2;
|
load_segs *= 2;
|
else
|
else
|
perror_with_name ("ptrace ldinfo");
|
perror_with_name ("ptrace ldinfo");
|
}
|
}
|
else
|
else
|
{
|
{
|
vmap_ldinfo (ldi);
|
vmap_ldinfo (ldi);
|
vmap_exec (); /* relocate the exec and core sections as well. */
|
vmap_exec (); /* relocate the exec and core sections as well. */
|
}
|
}
|
} while (rc == -1);
|
} while (rc == -1);
|
if (ldi)
|
if (ldi)
|
xfree (ldi);
|
xfree (ldi);
|
}
|
}
|
|
|
/* Core file stuff. */
|
/* Core file stuff. */
|
|
|
/* Relocate symtabs and read in shared library info, based on symbols
|
/* Relocate symtabs and read in shared library info, based on symbols
|
from the core file. */
|
from the core file. */
|
|
|
void
|
void
|
xcoff_relocate_core (struct target_ops *target)
|
xcoff_relocate_core (struct target_ops *target)
|
{
|
{
|
sec_ptr ldinfo_sec;
|
sec_ptr ldinfo_sec;
|
int offset = 0;
|
int offset = 0;
|
LdInfo *ldi;
|
LdInfo *ldi;
|
struct vmap *vp;
|
struct vmap *vp;
|
int arch64 = ARCH64 ();
|
int arch64 = ARCH64 ();
|
|
|
/* Size of a struct ld_info except for the variable-length filename. */
|
/* Size of a struct ld_info except for the variable-length filename. */
|
int nonfilesz = (int)LDI_FILENAME ((LdInfo *)0, arch64);
|
int nonfilesz = (int)LDI_FILENAME ((LdInfo *)0, arch64);
|
|
|
/* Allocated size of buffer. */
|
/* Allocated size of buffer. */
|
int buffer_size = nonfilesz;
|
int buffer_size = nonfilesz;
|
char *buffer = xmalloc (buffer_size);
|
char *buffer = xmalloc (buffer_size);
|
struct cleanup *old = make_cleanup (free_current_contents, &buffer);
|
struct cleanup *old = make_cleanup (free_current_contents, &buffer);
|
|
|
ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
|
ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
|
if (ldinfo_sec == NULL)
|
if (ldinfo_sec == NULL)
|
{
|
{
|
bfd_err:
|
bfd_err:
|
fprintf_filtered (gdb_stderr, "Couldn't get ldinfo from core file: %s\n",
|
fprintf_filtered (gdb_stderr, "Couldn't get ldinfo from core file: %s\n",
|
bfd_errmsg (bfd_get_error ()));
|
bfd_errmsg (bfd_get_error ()));
|
do_cleanups (old);
|
do_cleanups (old);
|
return;
|
return;
|
}
|
}
|
do
|
do
|
{
|
{
|
int i;
|
int i;
|
int names_found = 0;
|
int names_found = 0;
|
|
|
/* Read in everything but the name. */
|
/* Read in everything but the name. */
|
if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
|
if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
|
offset, nonfilesz) == 0)
|
offset, nonfilesz) == 0)
|
goto bfd_err;
|
goto bfd_err;
|
|
|
/* Now the name. */
|
/* Now the name. */
|
i = nonfilesz;
|
i = nonfilesz;
|
do
|
do
|
{
|
{
|
if (i == buffer_size)
|
if (i == buffer_size)
|
{
|
{
|
buffer_size *= 2;
|
buffer_size *= 2;
|
buffer = xrealloc (buffer, buffer_size);
|
buffer = xrealloc (buffer, buffer_size);
|
}
|
}
|
if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
|
if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
|
offset + i, 1) == 0)
|
offset + i, 1) == 0)
|
goto bfd_err;
|
goto bfd_err;
|
if (buffer[i++] == '\0')
|
if (buffer[i++] == '\0')
|
++names_found;
|
++names_found;
|
}
|
}
|
while (names_found < 2);
|
while (names_found < 2);
|
|
|
ldi = (LdInfo *) buffer;
|
ldi = (LdInfo *) buffer;
|
|
|
/* Can't use a file descriptor from the core file; need to open it. */
|
/* Can't use a file descriptor from the core file; need to open it. */
|
if (arch64)
|
if (arch64)
|
ldi->l64.ldinfo_fd = -1;
|
ldi->l64.ldinfo_fd = -1;
|
else
|
else
|
ldi->l32.ldinfo_fd = -1;
|
ldi->l32.ldinfo_fd = -1;
|
|
|
/* The first ldinfo is for the exec file, allocated elsewhere. */
|
/* The first ldinfo is for the exec file, allocated elsewhere. */
|
if (offset == 0 && vmap != NULL)
|
if (offset == 0 && vmap != NULL)
|
vp = vmap;
|
vp = vmap;
|
else
|
else
|
vp = add_vmap (ldi);
|
vp = add_vmap (ldi);
|
|
|
/* Process next shared library upon error. */
|
/* Process next shared library upon error. */
|
offset += LDI_NEXT (ldi, arch64);
|
offset += LDI_NEXT (ldi, arch64);
|
if (vp == NULL)
|
if (vp == NULL)
|
continue;
|
continue;
|
|
|
vmap_secs (vp, ldi, arch64);
|
vmap_secs (vp, ldi, arch64);
|
|
|
/* Unless this is the exec file,
|
/* Unless this is the exec file,
|
add our sections to the section table for the core target. */
|
add our sections to the section table for the core target. */
|
if (vp != vmap)
|
if (vp != vmap)
|
{
|
{
|
struct section_table *stp;
|
struct section_table *stp;
|
|
|
target_resize_to_sections (target, 2);
|
target_resize_to_sections (target, 2);
|
stp = target->to_sections_end - 2;
|
stp = target->to_sections_end - 2;
|
|
|
stp->bfd = vp->bfd;
|
stp->bfd = vp->bfd;
|
stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".text");
|
stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".text");
|
stp->addr = vp->tstart;
|
stp->addr = vp->tstart;
|
stp->endaddr = vp->tend;
|
stp->endaddr = vp->tend;
|
stp++;
|
stp++;
|
|
|
stp->bfd = vp->bfd;
|
stp->bfd = vp->bfd;
|
stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".data");
|
stp->the_bfd_section = bfd_get_section_by_name (stp->bfd, ".data");
|
stp->addr = vp->dstart;
|
stp->addr = vp->dstart;
|
stp->endaddr = vp->dend;
|
stp->endaddr = vp->dend;
|
}
|
}
|
|
|
vmap_symtab (vp);
|
vmap_symtab (vp);
|
}
|
}
|
while (LDI_NEXT (ldi, arch64) != 0);
|
while (LDI_NEXT (ldi, arch64) != 0);
|
vmap_exec ();
|
vmap_exec ();
|
breakpoint_re_set ();
|
breakpoint_re_set ();
|
do_cleanups (old);
|
do_cleanups (old);
|
}
|
}
|
|
|
int
|
int
|
kernel_u_size (void)
|
kernel_u_size (void)
|
{
|
{
|
return (sizeof (struct user));
|
return (sizeof (struct user));
|
}
|
}
|
|
|
/* Under AIX, we have to pass the correct TOC pointer to a function
|
/* Under AIX, we have to pass the correct TOC pointer to a function
|
when calling functions in the inferior.
|
when calling functions in the inferior.
|
We try to find the relative toc offset of the objfile containing PC
|
We try to find the relative toc offset of the objfile containing PC
|
and add the current load address of the data segment from the vmap. */
|
and add the current load address of the data segment from the vmap. */
|
|
|
static CORE_ADDR
|
static CORE_ADDR
|
find_toc_address (CORE_ADDR pc)
|
find_toc_address (CORE_ADDR pc)
|
{
|
{
|
struct vmap *vp;
|
struct vmap *vp;
|
extern CORE_ADDR get_toc_offset (struct objfile *); /* xcoffread.c */
|
extern CORE_ADDR get_toc_offset (struct objfile *); /* xcoffread.c */
|
|
|
for (vp = vmap; vp; vp = vp->nxt)
|
for (vp = vmap; vp; vp = vp->nxt)
|
{
|
{
|
if (pc >= vp->tstart && pc < vp->tend)
|
if (pc >= vp->tstart && pc < vp->tend)
|
{
|
{
|
/* vp->objfile is only NULL for the exec file. */
|
/* vp->objfile is only NULL for the exec file. */
|
return vp->dstart + get_toc_offset (vp->objfile == NULL
|
return vp->dstart + get_toc_offset (vp->objfile == NULL
|
? symfile_objfile
|
? symfile_objfile
|
: vp->objfile);
|
: vp->objfile);
|
}
|
}
|
}
|
}
|
error ("Unable to find TOC entry for pc 0x%x\n", pc);
|
error ("Unable to find TOC entry for pc 0x%x\n", pc);
|
}
|
}
|
|
|
/* Register that we are able to handle rs6000 core file formats. */
|
/* Register that we are able to handle rs6000 core file formats. */
|
|
|
static struct core_fns rs6000_core_fns =
|
static struct core_fns rs6000_core_fns =
|
{
|
{
|
bfd_target_xcoff_flavour, /* core_flavour */
|
bfd_target_xcoff_flavour, /* core_flavour */
|
default_check_format, /* check_format */
|
default_check_format, /* check_format */
|
default_core_sniffer, /* core_sniffer */
|
default_core_sniffer, /* core_sniffer */
|
fetch_core_registers, /* core_read_registers */
|
fetch_core_registers, /* core_read_registers */
|
NULL /* next */
|
NULL /* next */
|
};
|
};
|
|
|
void
|
void
|
_initialize_core_rs6000 (void)
|
_initialize_core_rs6000 (void)
|
{
|
{
|
/* Initialize hook in rs6000-tdep.c for determining the TOC address when
|
/* Initialize hook in rs6000-tdep.c for determining the TOC address when
|
calling functions in the inferior. */
|
calling functions in the inferior. */
|
rs6000_find_toc_address_hook = find_toc_address;
|
rs6000_find_toc_address_hook = find_toc_address;
|
|
|
/* Initialize hook in rs6000-tdep.c to set the current architecture when
|
/* Initialize hook in rs6000-tdep.c to set the current architecture when
|
starting a child process. */
|
starting a child process. */
|
rs6000_set_host_arch_hook = set_host_arch;
|
rs6000_set_host_arch_hook = set_host_arch;
|
|
|
add_core_fns (&rs6000_core_fns);
|
add_core_fns (&rs6000_core_fns);
|
}
|
}
|
|
|
