You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
132 lines
3.7 KiB
132 lines
3.7 KiB
/* Target-dependent code for Solaris x86.
|
|
|
|
Copyright 2002, 2003, 2004 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 2 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, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include "defs.h"
|
|
#include "value.h"
|
|
#include "osabi.h"
|
|
|
|
#include "gdb_string.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;
|
|
}
|
|
|
|
/* 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);
|
|
|
|
/* 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;
|
|
|
|
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);
|
|
}
|
|
|