amd64-sol2-tdep.c revision 1.6
1/* Target-dependent code for AMD64 Solaris. 2 3 Copyright (C) 2001-2016 Free Software Foundation, Inc. 4 5 Contributed by Joseph Myers, CodeSourcery, LLC. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 21 22#include "defs.h" 23#include "frame.h" 24#include "gdbcore.h" 25#include "regcache.h" 26#include "osabi.h" 27#include "symtab.h" 28 29#include "sol2-tdep.h" 30#include "amd64-tdep.h" 31#include "solib-svr4.h" 32 33/* Mapping between the general-purpose registers in gregset_t format 34 and GDB's register cache layout. */ 35 36/* From <sys/regset.h>. */ 37static int amd64_sol2_gregset_reg_offset[] = { 38 14 * 8, /* %rax */ 39 11 * 8, /* %rbx */ 40 13 * 8, /* %rcx */ 41 12 * 8, /* %rdx */ 42 9 * 8, /* %rsi */ 43 8 * 8, /* %rdi */ 44 10 * 8, /* %rbp */ 45 20 * 8, /* %rsp */ 46 7 * 8, /* %r8 ... */ 47 6 * 8, 48 5 * 8, 49 4 * 8, 50 3 * 8, 51 2 * 8, 52 1 * 8, 53 0 * 8, /* ... %r15 */ 54 17 * 8, /* %rip */ 55 19 * 8, /* %eflags */ 56 18 * 8, /* %cs */ 57 21 * 8, /* %ss */ 58 25 * 8, /* %ds */ 59 24 * 8, /* %es */ 60 22 * 8, /* %fs */ 61 23 * 8 /* %gs */ 62}; 63 64 65/* Return whether THIS_FRAME corresponds to a Solaris sigtramp 66 routine. */ 67 68static int 69amd64_sol2_sigtramp_p (struct frame_info *this_frame) 70{ 71 CORE_ADDR pc = get_frame_pc (this_frame); 72 const char *name; 73 74 find_pc_partial_function (pc, &name, NULL, NULL); 75 return (name && (strcmp ("sigacthandler", name) == 0 76 || strcmp (name, "ucbsigvechandler") == 0)); 77} 78 79/* Solaris doesn't have a 'struct sigcontext', but it does have a 80 'mcontext_t' that contains the saved set of machine registers. */ 81 82static CORE_ADDR 83amd64_sol2_mcontext_addr (struct frame_info *this_frame) 84{ 85 CORE_ADDR sp, ucontext_addr; 86 87 sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM); 88 ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 8); 89 90 return ucontext_addr + 72; 91} 92 93static void 94amd64_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) 95{ 96 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 97 98 tdep->gregset_reg_offset = amd64_sol2_gregset_reg_offset; 99 tdep->gregset_num_regs = ARRAY_SIZE (amd64_sol2_gregset_reg_offset); 100 tdep->sizeof_gregset = 28 * 8; 101 102 amd64_init_abi (info, gdbarch); 103 104 tdep->sigtramp_p = amd64_sol2_sigtramp_p; 105 tdep->sigcontext_addr = amd64_sol2_mcontext_addr; 106 tdep->sc_reg_offset = tdep->gregset_reg_offset; 107 tdep->sc_num_regs = tdep->gregset_num_regs; 108 109 /* Solaris uses SVR4-style shared libraries. */ 110 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); 111 set_solib_svr4_fetch_link_map_offsets 112 (gdbarch, svr4_lp64_fetch_link_map_offsets); 113 114 /* How to print LWP PTIDs from core files. */ 115 set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str); 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