From 5cd226f27555deecd8cb96019e0e915c7c7c2a3c Mon Sep 17 00:00:00 2001 From: Tristan Gingold Date: Fri, 3 Jul 2009 12:06:36 +0000 Subject: 2009-06-29 Tristan Gingold * i386-darwin-tdep.c (amd64_darwin_thread_state_reg_offset) (amd64_darwin_thread_state_num_regs) (amd64_darwin_sigcontext_addr, x86_darwin_init_abi_64): Moved to amd64-darwin-tdep.c (_initialize_i386_darwin_tdep): Remove 64 bits parts. (darwin_dwarf_signal_frame_p): Make public. * amd64-darwin-tdep.c: New file with most chunks from i386-darwin-tdep.c * i386-darwin-tdep.h: Add a prototype for darwin_dwarf_signal_frame_p. (amd64_darwin_thread_state_reg_offset) (amd64_darwin_thread_state_num_regs): Moved to amd64-darwin-tdep.h * amd64-darwin-tdep.h: New file. * i386-darwin-nat.c: Only includes amd64-nat.h and amd64-darwin-tdep.h if BFD64 is defined. (i386_darwin_fetch_inferior_registers): Add #ifdef BFD64/#endif around 64 bits parts. (i386_darwin_store_inferior_registers): Ditto. (darwin_set_sstep): Ditto. (darwin_complete_target): Ditto. (amd64_darwin_sstep_at_sigreturn): Ditto. * configure.tgt: Create a separate entry for x86_64-*-darwin. Add 64 bits support for i386-*-darwin if --enable-64-bit-bfd. * Makefile.in (ALLDEPFILES): Add amd64-darwin-tdep.c, darwin-nat.c, i386-darwin-tdep.c i386-darwin-nat.c (ALL_64_TARGET_OBS): Add amd64-darwin-tdep.o --- gdb/amd64-darwin-tdep.c | 129 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 gdb/amd64-darwin-tdep.c (limited to 'gdb/amd64-darwin-tdep.c') diff --git a/gdb/amd64-darwin-tdep.c b/gdb/amd64-darwin-tdep.c new file mode 100644 index 0000000..69fd756 --- /dev/null +++ b/gdb/amd64-darwin-tdep.c @@ -0,0 +1,129 @@ +/* Darwin support for GDB, the GNU debugger. + Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2005, 2008, 2009 + Free Software Foundation, Inc. + + Contributed by Apple Computer, 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 3 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, see . */ + +#include "defs.h" +#include "frame.h" +#include "inferior.h" +#include "gdbcore.h" +#include "target.h" +#include "floatformat.h" +#include "symtab.h" +#include "regcache.h" +#include "libbfd.h" +#include "objfiles.h" + +#include "i387-tdep.h" +#include "amd64-tdep.h" +#include "osabi.h" +#include "ui-out.h" +#include "symtab.h" +#include "frame.h" +#include "gdb_assert.h" +#include "amd64-darwin-tdep.h" +#include "i386-darwin-tdep.h" +#include "solib.h" +#include "solib-darwin.h" +#include "dwarf2-frame.h" + +/* Offsets into the struct x86_thread_state64 where we'll find the saved regs. + From and amd64-tdep.h. */ +int amd64_darwin_thread_state_reg_offset[] = +{ + 0 * 8, /* %rax */ + 1 * 8, /* %rbx */ + 2 * 8, /* %rcx */ + 3 * 8, /* %rdx */ + 5 * 8, /* %rsi */ + 4 * 8, /* %rdi */ + 6 * 8, /* %rbp */ + 7 * 8, /* %rsp */ + 8 * 8, /* %r8 ... */ + 9 * 8, + 10 * 8, + 11 * 8, + 12 * 8, + 13 * 8, + 14 * 8, + 15 * 8, /* ... %r15 */ + 16 * 8, /* %rip */ + 17 * 8, /* %rflags */ + 18 * 8, /* %cs */ + -1, /* %ss */ + -1, /* %ds */ + -1, /* %es */ + 19 * 8, /* %fs */ + 20 * 8 /* %gs */ +}; + +const int amd64_darwin_thread_state_num_regs = + ARRAY_SIZE (amd64_darwin_thread_state_reg_offset); + +/* Assuming THIS_FRAME is a Darwin sigtramp routine, return the + address of the associated sigcontext structure. */ + +static CORE_ADDR +amd64_darwin_sigcontext_addr (struct frame_info *this_frame) +{ + struct gdbarch *gdbarch = get_frame_arch (this_frame); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + CORE_ADDR rbx; + CORE_ADDR si; + gdb_byte buf[8]; + + /* A pointer to the ucontext is passed as the fourth argument + to the signal handler, which is saved in rbx. */ + get_frame_register (this_frame, AMD64_RBX_REGNUM, buf); + rbx = extract_unsigned_integer (buf, 8, byte_order); + + /* The pointer to mcontext is at offset 48. */ + read_memory (rbx + 48, buf, 8); + + /* First register (rax) is at offset 16. */ + return extract_unsigned_integer (buf, 8, byte_order) + 16; +} + +static void +x86_darwin_init_abi_64 (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + amd64_init_abi (info, gdbarch); + + tdep->struct_return = reg_struct_return; + + dwarf2_frame_set_signal_frame_p (gdbarch, darwin_dwarf_signal_frame_p); + + tdep->sigtramp_p = i386_sigtramp_p; + tdep->sigcontext_addr = amd64_darwin_sigcontext_addr; + tdep->sc_reg_offset = amd64_darwin_thread_state_reg_offset; + tdep->sc_num_regs = amd64_darwin_thread_state_num_regs; + + tdep->jb_pc_offset = 148; + + set_solib_ops (gdbarch, &darwin_so_ops); +} + +void +_initialize_amd64_darwin_tdep (void) +{ + gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, + GDB_OSABI_DARWIN, x86_darwin_init_abi_64); +} -- cgit v1.1