d747e0af3d
* All GDB files that #include defs.h: Removed stdio.h. (defs.h): #include stdio.h. This has been tested by building GDBs for all targets hosted on Sun4. None of the build problems were related to stdio.h inclusion. (n.b. many configurations don't build for other reasons.)
110 lines
3.4 KiB
C
110 lines
3.4 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., 675 Mass Ave, Cambridge, MA 02139, 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"
|
|
|
|
/* These are needed on various systems to expand REGISTER_U_ADDR. */
|
|
#ifndef USG
|
|
#include <sys/dir.h>
|
|
#include <sys/file.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/user.h>
|
|
#include <sys/ptrace.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. */
|
|
|
|
/* 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
|
|
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;
|
|
if (reg_ptr > core_reg_size)
|
|
fprintf (stderr, "Can't find registers in core file\n");
|
|
|
|
for (regno = 0; regno < NUM_REGS; regno++)
|
|
{
|
|
addr = 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 >= NUM_REGS)
|
|
error ("Invalid register number %d.", regno);
|
|
|
|
REGISTER_U_ADDR (addr, blockend, regno);
|
|
|
|
return addr;
|
|
}
|
|
|
|
#endif /* REGISTER_U_ADDR */
|