/* Target-dependent code for Solaris x86. Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, 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 <http://www.gnu.org/licenses/>. */ #include "defs.h" #include "value.h" #include "osabi.h" #include "gdb_string.h" #include "sol2-tdep.h" #include "i386-tdep.h" #include "solib-svr4.h" /* From <ia32/sys/reg.h>. */ static int i386_sol2_gregset_reg_offset[] = { 11 * 4, /* %eax */ 10 * 4, /* %ecx */ 9 * 4, /* %edx */ 8 * 4, /* %ebx */ 17 * 4, /* %esp */ 6 * 4, /* %ebp */ 5 * 4, /* %esi */ 4 * 4, /* %edi */ 14 * 4, /* %eip */ 16 * 4, /* %eflags */ 15 * 4, /* %cs */ 18 * 4, /* %ss */ 3 * 4, /* %ds */ 2 * 4, /* %es */ 1 * 4, /* %fs */ 0 * 4 /* %gs */ }; /* Return whether the frame preceding NEXT_FRAME corresponds to a Solaris sigtramp routine. */ static int i386_sol2_sigtramp_p (struct frame_info *next_frame) { CORE_ADDR pc = frame_pc_unwind (next_frame); char *name; find_pc_partial_function (pc, &name, NULL, NULL); return (name && (strcmp ("sigacthandler", name) == 0 || strcmp (name, "ucbsigvechandler") == 0)); } /* Solaris doesn't have a `struct sigcontext', but it does have a `mcontext_t' that contains the saved set of machine registers. */ static CORE_ADDR i386_sol2_mcontext_addr (struct frame_info *next_frame) { CORE_ADDR sp, ucontext_addr; sp = frame_unwind_register_unsigned (next_frame, I386_ESP_REGNUM); ucontext_addr = get_frame_memory_unsigned (next_frame, sp + 8, 4); return ucontext_addr + 36; } /* SunPRO encodes the static variables. This is not related to C++ mangling, it is done for C too. */ static char * i386_sol2_static_transform_name (char *name) { char *p; if (name[0] == '.') { /* For file-local statics there will be a period, a bunch of junk (the contents of which match a string given in the N_OPT), a period and the name. For function-local statics there will be a bunch of junk (which seems to change the second character from 'A' to 'B'), a period, the name of the function, and the name. So just skip everything before the last period. */ p = strrchr (name, '.'); if (p != NULL) name = p + 1; } return name; } /* Solaris 2. */ static void i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); /* Solaris is SVR4-based. */ i386_svr4_init_abi (info, gdbarch); /* The SunPRO compiler puts out 0 instead of the address in N_SO symbols, and for SunPRO 3.0, N_FUN symbols too. */ set_gdbarch_sofun_address_maybe_missing (gdbarch, 1); /* Handle SunPRO encoding of static symbols. */ set_gdbarch_static_transform_name (gdbarch, i386_sol2_static_transform_name); /* Solaris reserves space for its FPU emulator in `fpregset_t'. There is also some space reserved for the registers of a Weitek math coprocessor. */ tdep->gregset_reg_offset = i386_sol2_gregset_reg_offset; tdep->gregset_num_regs = ARRAY_SIZE (i386_sol2_gregset_reg_offset); tdep->sizeof_gregset = 19 * 4; tdep->sizeof_fpregset = 380; /* Signal trampolines are slightly different from SVR4. */ tdep->sigtramp_p = i386_sol2_sigtramp_p; tdep->sigcontext_addr = i386_sol2_mcontext_addr; tdep->sc_reg_offset = tdep->gregset_reg_offset; tdep->sc_num_regs = tdep->gregset_num_regs; /* Solaris has SVR4-style shared libraries. */ set_gdbarch_skip_solib_resolver (gdbarch, sol2_skip_solib_resolver); set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_ilp32_fetch_link_map_offsets); } static enum gdb_osabi i386_sol2_osabi_sniffer (bfd *abfd) { /* If we have a section named .SUNW_version, then it is almost certainly Solaris 2. */ if (bfd_get_section_by_name (abfd, ".SUNW_version")) return GDB_OSABI_SOLARIS; return GDB_OSABI_UNKNOWN; } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_i386_sol2_tdep (void); void _initialize_i386_sol2_tdep (void) { /* Register an ELF OS ABI sniffer for Solaris 2 binaries. */ gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour, i386_sol2_osabi_sniffer); gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS, i386_sol2_init_abi); }