1 /* Target-dependent code for Solaris x86.
3 Copyright (C) 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "gdb_string.h"
27 #include "sol2-tdep.h"
28 #include "i386-tdep.h"
29 #include "solib-svr4.h"
31 /* From <ia32/sys/reg.h>. */
32 static int i386_sol2_gregset_reg_offset[] =
52 /* Return whether THIS_FRAME corresponds to a Solaris sigtramp
56 i386_sol2_sigtramp_p (struct frame_info *this_frame)
58 CORE_ADDR pc = get_frame_pc (this_frame);
61 find_pc_partial_function (pc, &name, NULL, NULL);
62 return (name && (strcmp ("sigacthandler", name) == 0
63 || strcmp (name, "ucbsigvechandler") == 0));
66 /* Solaris doesn't have a `struct sigcontext', but it does have a
67 `mcontext_t' that contains the saved set of machine registers. */
70 i386_sol2_mcontext_addr (struct frame_info *this_frame)
72 CORE_ADDR sp, ucontext_addr;
74 sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM);
75 ucontext_addr = get_frame_memory_unsigned (this_frame, sp + 8, 4);
77 return ucontext_addr + 36;
80 /* SunPRO encodes the static variables. This is not related to C++
81 mangling, it is done for C too. */
84 i386_sol2_static_transform_name (char *name)
89 /* For file-local statics there will be a period, a bunch of
90 junk (the contents of which match a string given in the
91 N_OPT), a period and the name. For function-local statics
92 there will be a bunch of junk (which seems to change the
93 second character from 'A' to 'B'), a period, the name of the
94 function, and the name. So just skip everything before the
96 p = strrchr (name, '.');
106 i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
108 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
110 /* Solaris is SVR4-based. */
111 i386_svr4_init_abi (info, gdbarch);
113 /* The SunPRO compiler puts out 0 instead of the address in N_SO symbols,
114 and for SunPRO 3.0, N_FUN symbols too. */
115 set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
117 /* Handle SunPRO encoding of static symbols. */
118 set_gdbarch_static_transform_name (gdbarch, i386_sol2_static_transform_name);
120 /* Solaris reserves space for its FPU emulator in `fpregset_t'.
121 There is also some space reserved for the registers of a Weitek
123 tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset;
124 tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset);
125 tdep->sizeof_gregset = 19 * 4;
126 tdep->sizeof_fpregset = 380;
128 /* Signal trampolines are slightly different from SVR4. */
129 tdep->sigtramp_p = i386_sol2_sigtramp_p;
130 tdep->sigcontext_addr = i386_sol2_mcontext_addr;
131 tdep->sc_reg_offset = tdep->gregset_reg_offset;
132 tdep->sc_num_regs = tdep->gregset_num_regs;
134 /* Solaris has SVR4-style shared libraries. */
135 set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver);
136 set_solib_svr4_fetch_link_map_offsets
137 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
139 /* Solaris encodes the pid of the inferior in regset section
141 set_gdbarch_core_reg_section_encodes_pid (gdbarch, 1);
143 /* How to print LWP PTIDs from core files. */
144 set_gdbarch_core_pid_to_str (gdbarch, sol2_core_pid_to_str);
148 static enum gdb_osabi
149 i386_sol2_osabi_sniffer (bfd *abfd)
151 /* If we have a section named .SUNW_version, then it is almost
152 certainly Solaris 2. */
153 if (bfd_get_section_by_name (abfd, ".SUNW_version"))
154 return GDB_OSABI_SOLARIS;
156 return GDB_OSABI_UNKNOWN;
159 /* Provide a prototype to silence -Wmissing-prototypes. */
160 void _initialize_i386_sol2_tdep (void);
163 _initialize_i386_sol2_tdep (void)
165 /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */
166 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
167 i386_sol2_osabi_sniffer);
169 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS,