109 lines
3 KiB
C
109 lines
3 KiB
C
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/* Target-dependent code for FreeBSD/amd64.
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Copyright 2003 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 "x86-64-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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amd64fbsd_sigcontext_addr (struct frame_info *next_frame)
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{
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char buf[8];
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CORE_ADDR sp;
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frame_unwind_register (next_frame, X86_64_RSP_REGNUM, buf);
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sp = extract_unsigned_integer (buf, 8);
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return read_memory_unsigned_integer (sp + 16, 8);
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}
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/* FreeBSD 5.1-RELEASE or later. */
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/* Location of the signal trampoline. */
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CORE_ADDR amd64fbsd_sigtramp_start = 0x7fffffffc0;
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CORE_ADDR amd64fbsd_sigtramp_end = 0x7fffffffe0;
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/* From <machine/signal.h>. */
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int amd64fbsd_sc_reg_offset[X86_64_NUM_GREGS] =
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{
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24 + 14 * 8, /* %rax */
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24 + 11 * 8, /* %rbx */
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24 + 13 * 8, /* %rcx */
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24 + 12 * 8, /* %rdx */
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24 + 9 * 8, /* %rsi */
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24 + 8 * 8, /* %rdi */
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24 + 10 * 8, /* %rbp */
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24 + 20 * 8, /* %rsp */
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24 + 7 * 8, /* %r8 */
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24 + 6 * 8, /* %r9 */
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24 + 5 * 8, /* %r10 */
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24 + 4 * 8, /* %r11 */
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24 + 3 * 8, /* %r12 */
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24 + 2 * 8, /* %r13 */
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24 + 1 * 8, /* %r14 */
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24 + 0 * 8, /* %r15 */
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24 + 17 * 8, /* %rip */
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24 + 19 * 8, /* %eflags */
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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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amd64fbsd_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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/* Obviously FreeBSD is BSD-based. */
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i386bsd_init_abi (info, gdbarch);
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x86_64_init_abi (info, gdbarch);
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tdep->sigtramp_start = amd64fbsd_sigtramp_start;
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tdep->sigtramp_end = amd64fbsd_sigtramp_start;
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tdep->sigcontext_addr = amd64fbsd_sigcontext_addr;
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tdep->sc_reg_offset = amd64fbsd_sc_reg_offset;
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tdep->sc_num_regs = X86_64_NUM_GREGS;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_amd64fbsd_tdep (void);
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void
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_initialize_amd64fbsd_tdep (void)
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{
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gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
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GDB_OSABI_FREEBSD_ELF, amd64fbsd_init_abi);
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}
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