611cb4a542
* gdbserver/mem-break.c: New file.
* gdbserver/mem-break.h: New file.
* gdbserver/Makefile.in: Add mem-break.o rule; update server.h
dependencies.
* gdbserver/inferiors.c (struct inferior_info): Add target_data
member.
(clear_inferiors): Free target_data member if set.
(inferior_target_data, set_inferior_target_data): New functions.
* gdbserver/linux-i386-low.c (i386_breakpoint, i386_breakpoint_len)
(i386_stop_pc, i386_set_pc): New. Add to the_low_target.
* gdbserver/linux-low.c (linux_bp_reinsert): New variable.
(struct inferior_linux_data): New.
(linux_create_inferior): Use set_inferior_target_data.
(linux_attach): Likewise. Call add_inferior.
(linux_wait_for_one_inferior): New function.
(linux_wait): Call it.
(linux_write_memory): Add const.
(initialize_low): Call set_breakpoint_data.
* gdbserver/linux-low.h (struct linux_target_ops): Add breakpoint
handling members.
* gdbserver/server.c (attach_inferior): Remove extra add_inferior
call.
* gdbserver/server.h: Include mem-break.h. Update inferior.c
prototypes.
* gdbserver/target.c (read_inferior_memory)
(write_inferior_memory): New functions.
* gdbserver/target.h (read_inferior_memory)
(write_inferior_memory): Change macros to prototypes.
(struct target_ops): Update comments. Add const to write_memory
definition.
157 lines
3.5 KiB
C
157 lines
3.5 KiB
C
/* GNU/Linux/i386 specific low level interface, for the remote server for GDB.
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Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "server.h"
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#include "linux-low.h"
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#include "i387-fp.h"
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#ifdef HAVE_SYS_REG_H
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#include <sys/reg.h>
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#endif
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/* This module only supports access to the general purpose registers. */
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#define i386_num_regs 16
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/* This stuff comes from i386-linux-nat.c. */
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/* Mapping between the general-purpose registers in `struct user'
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format and GDB's register array layout. */
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static int i386_regmap[] =
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{
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EAX * 4, ECX * 4, EDX * 4, EBX * 4,
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UESP * 4, EBP * 4, ESI * 4, EDI * 4,
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EIP * 4, EFL * 4, CS * 4, SS * 4,
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DS * 4, ES * 4, FS * 4, GS * 4
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};
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static int
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i386_cannot_store_register (int regno)
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{
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return (regno >= i386_num_regs);
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}
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static int
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i386_cannot_fetch_register (int regno)
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{
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return (regno >= i386_num_regs);
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}
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#ifdef HAVE_LINUX_REGSETS
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#include <sys/procfs.h>
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#include <sys/ptrace.h>
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static void
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i386_fill_gregset (void *buf)
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{
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int i;
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for (i = 0; i < i386_num_regs; i++)
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collect_register (i, ((char *) buf) + i386_regmap[i]);
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collect_register_by_name ("orig_eax", ((char *) buf) + ORIG_EAX * 4);
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}
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static void
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i386_store_gregset (void *buf)
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{
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int i;
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for (i = 0; i < i386_num_regs; i++)
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supply_register (i, ((char *) buf) + i386_regmap[i]);
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supply_register_by_name ("orig_eax", ((char *) buf) + ORIG_EAX * 4);
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}
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static void
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i386_fill_fpregset (void *buf)
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{
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i387_cache_to_fsave (buf);
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}
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static void
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i386_store_fpregset (void *buf)
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{
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i387_fsave_to_cache (buf);
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}
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static void
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i386_fill_fpxregset (void *buf)
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{
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i387_cache_to_fxsave (buf);
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}
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static void
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i386_store_fpxregset (void *buf)
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{
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i387_fxsave_to_cache (buf);
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}
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struct regset_info target_regsets[] = {
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{ PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
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i386_fill_gregset, i386_store_gregset },
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#ifdef HAVE_PTRACE_GETFPXREGS
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{ PTRACE_GETFPXREGS, PTRACE_SETFPXREGS, sizeof (elf_fpxregset_t),
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i386_fill_fpxregset, i386_store_fpxregset },
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#endif
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{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
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i386_fill_fpregset, i386_store_fpregset },
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{ 0, 0, -1, NULL, NULL }
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};
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#endif /* HAVE_LINUX_REGSETS */
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static const char i386_breakpoint[] = { 0xCC };
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#define i386_breakpoint_len 1
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static CORE_ADDR
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i386_stop_pc ()
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{
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unsigned long pc;
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/* Overkill */
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fetch_inferior_registers (0);
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collect_register_by_name ("eip", &pc);
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return pc - 1;
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}
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static void
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i386_set_pc (CORE_ADDR newpc)
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{
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supply_register_by_name ("eip", &newpc);
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/* Overkill */
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store_inferior_registers (0);
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}
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struct linux_target_ops the_low_target = {
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i386_num_regs,
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i386_regmap,
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i386_cannot_fetch_register,
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i386_cannot_store_register,
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i386_stop_pc,
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i386_set_pc,
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i386_breakpoint,
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i386_breakpoint_len,
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};
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