| /* 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); |
| } |