old-cross-binutils/gdb/coredep.c
Jim Kingdon 100f92e2de * Makefile.in (c-exp.tab.o): Remove notice about shift/reduce conflicts
which no longer occur.

	gcc -Wall lint:
	* findvar.c (symbol_read_needs_frame), corelow.c (ignore),
	inflow.c (gdb_has_a_terminal): Make sure to return a value.
	* regex.h: Declare re_set_syntax.
	* printcmd.c: Include valprint.h.
	* infcmd.c, exec.c, maint.c, core.c: Include language.h.
	* maint.c: Include expression.h.
	* infrun.c, fork-child.c, corelow.c, inflow.c: Include thread.h.
	* inftarg.c: Include command.h.
	* coredep.c: Include value.h.
	* c-exp.y, m2-exp.y, ch-exp.y: Include bfd.h, symfile.h and objfiles.h.
	* ch-typeprint.c: Include typeprint.h.
	* ch-valprint.c: Include c-lang.h.
	* nlmread.c: Include buildsym.h.
	* environ.c: Include gdbcore.h.  Only include defs.h once.
	(set_in_environ): Cast const char * to char * when passing to
	set_gnutarget.
	Remove unused variables:
	* printcmd.c (printf_command): args_to_vprintf.
	* coffread.c (coff_symfile_init): strsection.
	Move variables to within the #ifdefs where they are used:
	* symtab.c (gdb_mangle_name): opname.
	* inftarg.c (child_attach): pid and exec_file.
	* inftarg.c (child_detach): siggnal.
	* objfiles.c (allocate_objfile): mapto, md, and fd.
	* objfiles.c (free_objfile): mmfd.
	* infrun.c (wait_for_inferior): Include BPSTAT_WHAT_LAST in switch.
	* infrun.c (wait_for_inferior): Remove unused same_pid label.
	* inferior.h: Declare set_sigint_trap and clear_sigint_trap.
	* parser-defs.h: Declare write_exp_elt_block.
	* stabsread.h: Declare elfstab_offset_sections and
	coffstab_build_psymtabs.
1993-10-21 20:41:50 +00:00

119 lines
3.6 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"
#include "value.h" /* For supply_register. */
/* 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>
#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
#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. */
/* 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;
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 */