| 1 | /* Target-dependent code for AMD64 Solaris. |
| 2 | |
| 3 | Copyright (C) 2001-2019 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 | |
| 24 | /* Local non-gdb includes. */ |
| 25 | #include "amd64-tdep.h" |
| 26 | #include "common/x86-xstate.h" |
| 27 | #include "frame.h" |
| 28 | #include "gdbcore.h" |
| 29 | #include "osabi.h" |
| 30 | #include "regcache.h" |
| 31 | #include "sol2-tdep.h" |
| 32 | #include "solib-svr4.h" |
| 33 | #include "symtab.h" |
| 34 | |
| 35 | /* Mapping between the general-purpose registers in gregset_t format |
| 36 | and GDB's register cache layout. */ |
| 37 | |
| 38 | /* From <sys/regset.h>. */ |
| 39 | static int amd64_sol2_gregset_reg_offset[] = { |
| 40 | 14 * 8, /* %rax */ |
| 41 | 11 * 8, /* %rbx */ |
| 42 | 13 * 8, /* %rcx */ |
| 43 | 12 * 8, /* %rdx */ |
| 44 | 9 * 8, /* %rsi */ |
| 45 | 8 * 8, /* %rdi */ |
| 46 | 10 * 8, /* %rbp */ |
| 47 | 20 * 8, /* %rsp */ |
| 48 | 7 * 8, /* %r8 ... */ |
| 49 | 6 * 8, |
| 50 | 5 * 8, |
| 51 | 4 * 8, |
| 52 | 3 * 8, |
| 53 | 2 * 8, |
| 54 | 1 * 8, |
| 55 | 0 * 8, /* ... %r15 */ |
| 56 | 17 * 8, /* %rip */ |
| 57 | 19 * 8, /* %eflags */ |
| 58 | 18 * 8, /* %cs */ |
| 59 | 21 * 8, /* %ss */ |
| 60 | 25 * 8, /* %ds */ |
| 61 | 24 * 8, /* %es */ |
| 62 | 22 * 8, /* %fs */ |
| 63 | 23 * 8 /* %gs */ |
| 64 | }; |
| 65 | \f |
| 66 | |
| 67 | /* Return whether THIS_FRAME corresponds to a Solaris sigtramp |
| 68 | routine. */ |
| 69 | |
| 70 | static int |
| 71 | amd64_sol2_sigtramp_p (struct frame_info *this_frame) |
| 72 | { |
| 73 | CORE_ADDR pc = get_frame_pc (this_frame); |
| 74 | const char *name; |
| 75 | |
| 76 | find_pc_partial_function (pc, &name, NULL, NULL); |
| 77 | return (name && (strcmp ("sigacthandler", name) == 0 |
| 78 | || strcmp (name, "ucbsigvechandler") == 0 |
| 79 | || strcmp (name, "__sighndlr") == 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 | |
| 85 | static CORE_ADDR |
| 86 | amd64_sol2_mcontext_addr (struct frame_info *this_frame) |
| 87 | { |
| 88 | CORE_ADDR sp, ucontext_addr; |
| 89 | |
| 90 | sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM); |
| 91 | ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 8); |
| 92 | |
| 93 | return ucontext_addr + 72; |
| 94 | } |
| 95 | |
| 96 | static void |
| 97 | amd64_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 | amd64_target_description (X86_XSTATE_SSE_MASK, true)); |
| 107 | |
| 108 | tdep->sigtramp_p = amd64_sol2_sigtramp_p; |
| 109 | tdep->sigcontext_addr = amd64_sol2_mcontext_addr; |
| 110 | tdep->sc_reg_offset = tdep->gregset_reg_offset; |
| 111 | tdep->sc_num_regs = tdep->gregset_num_regs; |
| 112 | |
| 113 | /* Solaris uses SVR4-style shared libraries. */ |
| 114 | set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); |
| 115 | set_solib_svr4_fetch_link_map_offsets |
| 116 | (gdbarch, svr4_lp64_fetch_link_map_offsets); |
| 117 | |
| 118 | /* How to print LWP PTIDs from core files. */ |
| 119 | set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str); |
| 120 | } |
| 121 | |
| 122 | void |
| 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 | } |