126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/* Extract registers from a "standard" core file, for GDB.
|
|
Copyright (C) 1988-1991 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. */
|
|
|
|
/* core.c is supposed to be the more machine-independent aspects of this;
|
|
this file is more machine-specific. */
|
|
|
|
#include "defs.h"
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include "gdbcore.h"
|
|
#include "value.h" /* For supply_register. */
|
|
#include "inferior.h" /* For ARCH_NUM_REGS. */
|
|
|
|
/* These are needed on various systems to expand REGISTER_U_ADDR. */
|
|
#ifndef USG
|
|
#include <sys/dir.h>
|
|
#include <sys/file.h>
|
|
#include "gdb_stat.h"
|
|
#include <sys/user.h>
|
|
#ifndef NO_PTRACE_H
|
|
# ifdef PTRACE_IN_WRONG_PLACE
|
|
# include <ptrace.h>
|
|
# else /* !PTRACE_IN_WRONG_PLACE */
|
|
# include <sys/ptrace.h>
|
|
# endif /* !PTRACE_IN_WRONG_PLACE */
|
|
#endif /* NO_PTRACE_H */
|
|
#endif
|
|
|
|
#ifndef CORE_REGISTER_ADDR
|
|
#define CORE_REGISTER_ADDR(regno, regptr) register_addr(regno, regptr)
|
|
#endif /* CORE_REGISTER_ADDR */
|
|
|
|
#ifdef NEED_SYS_CORE_H
|
|
#include <sys/core.h>
|
|
#endif
|
|
|
|
/* Extract the register values out of the core file and store
|
|
them where `read_register' will find them.
|
|
|
|
CORE_REG_SECT points to the register values themselves, read into memory.
|
|
CORE_REG_SIZE is the size of that area.
|
|
WHICH says which set of registers we are handling (0 = int, 2 = float
|
|
on machines where they are discontiguous).
|
|
REG_ADDR is the offset from u.u_ar0 to the register values relative to
|
|
core_reg_sect. This is used with old-fashioned core files to
|
|
locate the registers in a large upage-plus-stack ".reg" section.
|
|
Original upage address X is at location core_reg_sect+x+reg_addr.
|
|
*/
|
|
|
|
void
|
|
fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
|
|
char *core_reg_sect;
|
|
unsigned core_reg_size;
|
|
int which;
|
|
unsigned reg_addr;
|
|
{
|
|
register int regno;
|
|
register unsigned int addr;
|
|
int bad_reg = -1;
|
|
register reg_ptr = -reg_addr; /* Original u.u_ar0 is -reg_addr. */
|
|
int numregs = ARCH_NUM_REGS;
|
|
|
|
/* If u.u_ar0 was an absolute address in the core file, relativize it now,
|
|
so we can use it as an offset into core_reg_sect. When we're done,
|
|
"register 0" will be at core_reg_sect+reg_ptr, and we can use
|
|
CORE_REGISTER_ADDR to offset to the other registers. If this is a modern
|
|
core file without a upage, reg_ptr will be zero and this is all a big
|
|
NOP. */
|
|
if (reg_ptr > core_reg_size)
|
|
reg_ptr -= KERNEL_U_ADDR;
|
|
|
|
for (regno = 0; regno < numregs; regno++)
|
|
{
|
|
addr = CORE_REGISTER_ADDR (regno, reg_ptr);
|
|
if (addr >= core_reg_size) {
|
|
if (bad_reg < 0)
|
|
bad_reg = regno;
|
|
} else {
|
|
supply_register (regno, core_reg_sect + addr);
|
|
}
|
|
}
|
|
if (bad_reg >= 0)
|
|
{
|
|
error ("Register %s not found in core file.", reg_names[bad_reg]);
|
|
}
|
|
}
|
|
|
|
|
|
#ifdef REGISTER_U_ADDR
|
|
|
|
/* Return the address in the core dump or inferior of register REGNO.
|
|
BLOCKEND is the address of the end of the user structure. */
|
|
|
|
unsigned int
|
|
register_addr (regno, blockend)
|
|
int regno;
|
|
int blockend;
|
|
{
|
|
int addr;
|
|
|
|
if (regno < 0 || regno >= ARCH_NUM_REGS)
|
|
error ("Invalid register number %d.", regno);
|
|
|
|
REGISTER_U_ADDR (addr, blockend, regno);
|
|
|
|
return addr;
|
|
}
|
|
|
|
#endif /* REGISTER_U_ADDR */
|