1/* Target-dependent code for AMD64 Solaris. 2 3 Copyright (C) 2001, 2002, 2003, 2004, 2006, 2007 4 Free Software Foundation, Inc. 5 6 Contributed by Joseph Myers, CodeSourcery, LLC. 7 8 This file is part of GDB. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 22 23#include "defs.h" 24#include "frame.h" 25#include "gdbcore.h" 26#include "regcache.h" 27#include "osabi.h" 28#include "symtab.h" 29 30#include "gdb_string.h" 31 32#include "sol2-tdep.h" 33#include "amd64-tdep.h" 34#include "solib-svr4.h" 35 36/* Mapping between the general-purpose registers in gregset_t format 37 and GDB's register cache layout. */ 38 39/* From <sys/regset.h>. */ 40static int amd64_sol2_gregset_reg_offset[] = { 41 14 * 8, /* %rax */ 42 11 * 8, /* %rbx */ 43 13 * 8, /* %rcx */ 44 12 * 8, /* %rdx */ 45 9 * 8, /* %rsi */ 46 8 * 8, /* %rdi */ 47 10 * 8, /* %rbp */ 48 20 * 8, /* %rsp */ 49 7 * 8, /* %r8 ... */ 50 6 * 8, 51 5 * 8, 52 4 * 8, 53 3 * 8, 54 2 * 8, 55 1 * 8, 56 0 * 8, /* ... %r15 */ 57 17 * 8, /* %rip */ 58 16 * 8, /* %eflags */ 59 18 * 8, /* %cs */ 60 21 * 8, /* %ss */ 61 25 * 8, /* %ds */ 62 24 * 8, /* %es */ 63 22 * 8, /* %fs */ 64 23 * 8 /* %gs */ 65}; 66 67 68/* Return whether the frame preceding NEXT_FRAME corresponds to a 69 Solaris sigtramp routine. */ 70 71static int 72amd64_sol2_sigtramp_p (struct frame_info *next_frame) 73{ 74 CORE_ADDR pc = frame_pc_unwind (next_frame); 75 char *name; 76 77 find_pc_partial_function (pc, &name, NULL, NULL); 78 return (name && (strcmp ("sigacthandler", name) == 0 79 || strcmp (name, "ucbsigvechandler") == 0)); 80} 81 82/* Solaris doesn't have a 'struct sigcontext', but it does have a 83 'mcontext_t' that contains the saved set of machine registers. */ 84 85static CORE_ADDR 86amd64_sol2_mcontext_addr (struct frame_info *next_frame) 87{ 88 CORE_ADDR sp, ucontext_addr; 89 90 sp = frame_unwind_register_unsigned (next_frame, AMD64_RSP_REGNUM); 91 ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 8); 92 93 return ucontext_addr + 72; 94} 95 96static void 97amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) 98{ 99 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 100 101 tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset; 102 tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset); 103 tdep->sizeof_gregset = 28 * 8; 104 105 amd64_init_abi (info, gdbarch); 106 107 tdep->sigtramp_p = amd64_sol2_sigtramp_p; 108 tdep->sigcontext_addr = amd64_sol2_mcontext_addr; 109 tdep->sc_reg_offset = tdep->gregset_reg_offset; 110 tdep->sc_num_regs = tdep->gregset_num_regs; 111 112 /* Solaris uses SVR4-style shared libraries. */ 113 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); 114 set_solib_svr4_fetch_link_map_offsets 115 (gdbarch, svr4_lp64_fetch_link_map_offsets); 116} 117 118 119/* Provide a prototype to silence -Wmissing-prototypes. */ 120extern void _initialize_amd64_sol2_tdep (void); 121 122void 123_initialize_amd64_sol2_tdep (void) 124{ 125 gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, 126 GDB_OSABI_SOLARIS, amd64_sol2_init_abi); 127} 128