/* Target-dependent code for FreeBSD/amd64. Copyright 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "defs.h" #include "arch-utils.h" #include "frame.h" #include "gdbcore.h" #include "regcache.h" #include "osabi.h" #include "gdb_string.h" #include "x86-64-tdep.h" /* Support for signal handlers. */ /* Assuming NEXT_FRAME is for a frame following a BSD sigtramp routine, return the address of the associated sigcontext structure. */ static CORE_ADDR amd64fbsd_sigcontext_addr (struct frame_info *next_frame) { CORE_ADDR sp; /* The `struct sigcontext' (which really is an `ucontext_t' on FreeBSD/amd64) lives at a fixed offset in the signal frame. See <machine/sigframe.h>. */ sp = frame_unwind_register_unsigned (next_frame, X86_64_RSP_REGNUM); return sp + 16; } /* FreeBSD 5.1-RELEASE or later. */ /* Location of the signal trampoline. */ CORE_ADDR amd64fbsd_sigtramp_start = 0x7fffffffffc0; CORE_ADDR amd64fbsd_sigtramp_end = 0x7fffffffffe0; /* From <machine/signal.h>. */ int amd64fbsd_sc_reg_offset[X86_64_NUM_GREGS] = { 24 + 6 * 8, /* %rax */ 24 + 7 * 8, /* %rbx */ 24 + 3 * 8, /* %rcx */ 24 + 2 * 8, /* %rdx */ 24 + 1 * 8, /* %rsi */ 24 + 0 * 8, /* %rdi */ 24 + 8 * 8, /* %rbp */ 24 + 21 * 8, /* %rsp */ 24 + 4 * 8, /* %r8 */ 24 + 5 * 8, /* %r9 */ 24 + 9 * 8, /* %r10 */ 24 + 10 * 8, /* %r11 */ 24 + 11 * 8, /* %r12 */ 24 + 12 * 8, /* %r13 */ 24 + 13 * 8, /* %r14 */ 24 + 14 * 8, /* %r15 */ 24 + 18 * 8, /* %rip */ 24 + 20 * 8, /* %eflags */ -1, /* %ds */ -1, /* %es */ -1, /* %fs */ -1 /* %gs */ }; void amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); /* Obviously FreeBSD is BSD-based. */ i386bsd_init_abi (info, gdbarch); x86_64_init_abi (info, gdbarch); tdep->sigtramp_start = amd64fbsd_sigtramp_start; tdep->sigtramp_end = amd64fbsd_sigtramp_end; tdep->sigcontext_addr = amd64fbsd_sigcontext_addr; tdep->sc_reg_offset = amd64fbsd_sc_reg_offset; tdep->sc_num_regs = X86_64_NUM_GREGS; } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_amd64fbsd_tdep (void); void _initialize_amd64fbsd_tdep (void) { gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, GDB_OSABI_FREEBSD_ELF, amd64fbsd_init_abi); }