diff options
Diffstat (limited to 'contrib/gdb/gdb/amd64fbsd-tdep.c')
-rw-r--r-- | contrib/gdb/gdb/amd64fbsd-tdep.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/amd64fbsd-tdep.c b/contrib/gdb/gdb/amd64fbsd-tdep.c new file mode 100644 index 0000000..e4e02ab --- /dev/null +++ b/contrib/gdb/gdb/amd64fbsd-tdep.c @@ -0,0 +1,155 @@ +/* Target-dependent code for FreeBSD/amd64. + + Copyright 2003, 2004 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 "amd64-tdep.h" +#include "solib-svr4.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, AMD64_RSP_REGNUM); + return sp + 16; +} + +/* FreeBSD 5.1-RELEASE or later. */ + +/* Mapping between the general-purpose registers in `struct reg' + format and GDB's register cache layout. + + Note that some registers are 32-bit, but since we're little-endian + we get away with that. */ + +/* From <machine/reg.h>. */ +static int amd64fbsd_r_reg_offset[] = +{ + 14 * 8, /* %rax */ + 11 * 8, /* %rbx */ + 13 * 8, /* %rcx */ + 12 * 8, /* %rdx */ + 9 * 8, /* %rsi */ + 8 * 8, /* %rdi */ + 10 * 8, /* %rbp */ + 20 * 8, /* %rsp */ + 7 * 8, /* %r8 ... */ + 6 * 8, + 5 * 8, + 4 * 8, + 3 * 8, + 2 * 8, + 1 * 8, + 0 * 8, /* ... %r15 */ + 17 * 8, /* %rip */ + 19 * 8, /* %eflags */ + 18 * 8, /* %cs */ + 21 * 8, /* %ss */ + -1, /* %ds */ + -1, /* %es */ + -1, /* %fs */ + -1 /* %gs */ +}; + +/* Location of the signal trampoline. */ +CORE_ADDR amd64fbsd_sigtramp_start_addr = 0x7fffffffffc0; +CORE_ADDR amd64fbsd_sigtramp_end_addr = 0x7fffffffffe0; + +/* From <machine/signal.h>. */ +int amd64fbsd_sc_reg_offset[] = +{ + 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 + 22 * 8, /* %rsp */ + 24 + 4 * 8, /* %r8 ... */ + 24 + 5 * 8, + 24 + 9 * 8, + 24 + 10 * 8, + 24 + 11 * 8, + 24 + 12 * 8, + 24 + 13 * 8, + 24 + 14 * 8, /* ... %r15 */ + 24 + 19 * 8, /* %rip */ + 24 + 21 * 8, /* %eflags */ + 24 + 20 * 8, /* %cs */ + 24 + 23 * 8, /* %ss */ + -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); + + tdep->gregset_reg_offset = amd64fbsd_r_reg_offset; + tdep->gregset_num_regs = ARRAY_SIZE (amd64fbsd_r_reg_offset); + tdep->sizeof_gregset = 22 * 8; + + amd64_init_abi (info, gdbarch); + + tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr; + tdep->sigtramp_end = amd64fbsd_sigtramp_end_addr; + tdep->sigcontext_addr = amd64fbsd_sigcontext_addr; + tdep->sc_reg_offset = amd64fbsd_sc_reg_offset; + tdep->sc_num_regs = ARRAY_SIZE (amd64fbsd_sc_reg_offset); + + /* FreeBSD uses SVR4-style shared libraries. */ + set_solib_svr4_fetch_link_map_offsets + (gdbarch, svr4_lp64_fetch_link_map_offsets); +} + + +/* 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); +} |