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63c0089f20
`const gdb_byte *'. Use gdb_byte for break_insn. (i386_follow_jump): Use gdb_byte for op. (i386_analyze_struct_return): Use gdb_byte for proto1, proto2, buf and op. (i386_skip_probe): Use gdb_byte for buf and op. (struct i386_insn): Use gdb_byte for insn and mask. (i386_match_insn, i386_analyze_frame_setup) (i386_analyze_register_saves): Use gdb_byte for op. (i386_skip_prologue): Use gdb_byte for pic_pat and op; (i386_unwind_pc, i386_frame_cache, i386_sigtramp_frame_cache) (i386_unwind_dummy_id, i386_get_longjmp_target): Use gdb_byte for buf. (i386_extract_return_value, i386_store_return_value): Use `bfd_byte *' instead of `void *' for valbuf argument. Remove now redundant cast. (i386_pseudo_register_read, i386_pseudo_register_write): Use gdb_byte for mmx_buf. (i386_register_to_value, i386_value_to_register): Use `gdb_byte *' instead of `char *' for buf. (i386_supply_gregset, i386_collect_gregset): Use `gdb_byte *' instead of `char *' for regs. (i386_svr4_sigcontext_addr): Use gdb_byte for buf. * i386obsd-tdep.c (i386obsd_sigtramp_p): Use gdb_byte for sigreturn and `gdb_byte *' for buf. (i386obsd_aout_supply_regset): Use `const gdb_byte *' in cast. (i386obsd_supply_uthread, i386obsd_collect_uthread): Use gdb_byte for buf. * i386bsd-tdep.c (i386bsd_sigcontext_addr): Use gdb_byte for buf.
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/* Target-dependent code for i386 BSD's.
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Copyright 2001, 2002, 2003, 2004 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 "defs.h"
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#include "arch-utils.h"
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#include "frame.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "osabi.h"
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#include "gdb_string.h"
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#include "i386-tdep.h"
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/* Support for signal handlers. */
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/* Assuming NEXT_FRAME is for a frame following a BSD sigtramp
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routine, return the address of the associated sigcontext structure. */
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static CORE_ADDR
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i386bsd_sigcontext_addr (struct frame_info *next_frame)
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{
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gdb_byte buf[4];
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CORE_ADDR sp;
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frame_unwind_register (next_frame, I386_ESP_REGNUM, buf);
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sp = extract_unsigned_integer (buf, 4);
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return read_memory_unsigned_integer (sp + 8, 4);
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}
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/* Support for shared libraries. */
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/* Traditional BSD (4.3 BSD, still used for BSDI and 386BSD). */
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/* From <machine/signal.h>. */
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int i386bsd_sc_reg_offset[] =
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{
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-1, /* %eax */
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-1, /* %ecx */
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-1, /* %edx */
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-1, /* %ebx */
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8 + 0 * 4, /* %esp */
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8 + 1 * 4, /* %ebp */
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-1, /* %esi */
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-1, /* %edi */
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8 + 3 * 4, /* %eip */
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8 + 4 * 4, /* %eflags */
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-1, /* %cs */
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-1, /* %ss */
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-1, /* %ds */
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-1, /* %es */
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-1, /* %fs */
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-1 /* %gs */
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};
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void
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i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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tdep->jb_pc_offset = 0;
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tdep->sigtramp_start = 0xfdbfdfc0;
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tdep->sigtramp_end = 0xfdbfe000;
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tdep->sigcontext_addr = i386bsd_sigcontext_addr;
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tdep->sc_reg_offset = i386bsd_sc_reg_offset;
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tdep->sc_num_regs = ARRAY_SIZE (i386bsd_sc_reg_offset);
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}
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static enum gdb_osabi
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i386bsd_aout_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "a.out-i386-netbsd") == 0)
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return GDB_OSABI_NETBSD_AOUT;
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if (strcmp (bfd_get_target (abfd), "a.out-i386-freebsd") == 0)
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return GDB_OSABI_FREEBSD_AOUT;
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return GDB_OSABI_UNKNOWN;
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}
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static enum gdb_osabi
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i386bsd_core_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
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return GDB_OSABI_NETBSD_AOUT;
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return GDB_OSABI_UNKNOWN;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_i386bsd_tdep (void);
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void
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_initialize_i386bsd_tdep (void)
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{
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_aout_flavour,
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i386bsd_aout_osabi_sniffer);
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/* BFD doesn't set a flavour for NetBSD style a.out core files. */
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_unknown_flavour,
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i386bsd_core_osabi_sniffer);
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}
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