mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-25 02:53:48 +08:00
301 lines
7.9 KiB
C
301 lines
7.9 KiB
C
/* Target-dependent code for Cygwin running on i386's, for GDB.
|
|
|
|
Copyright (C) 2003, 2007-2012 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 "osabi.h"
|
|
#include "gdb_string.h"
|
|
#include "i386-tdep.h"
|
|
#include "windows-tdep.h"
|
|
#include "regset.h"
|
|
#include "gdb_obstack.h"
|
|
#include "xml-support.h"
|
|
#include "gdbcore.h"
|
|
#include "solib.h"
|
|
#include "solib-target.h"
|
|
#include "inferior.h"
|
|
|
|
/* Core file support. */
|
|
|
|
/* This vector maps GDB's idea of a register's number into an address
|
|
in the windows exception context vector. */
|
|
|
|
static int i386_windows_gregset_reg_offset[] =
|
|
{
|
|
176, /* eax */
|
|
172, /* ecx */
|
|
168, /* edx */
|
|
164, /* ebx */
|
|
|
|
196, /* esp */
|
|
180, /* ebp */
|
|
160, /* esi */
|
|
156, /* edi */
|
|
|
|
184, /* eip */
|
|
192, /* eflags */
|
|
188, /* cs */
|
|
200, /* ss */
|
|
|
|
152, /* ds */
|
|
148, /* es */
|
|
144, /* fs */
|
|
140, /* gs */
|
|
|
|
56, /* FloatSave.RegisterArea[0 * 10] */
|
|
66, /* FloatSave.RegisterArea[1 * 10] */
|
|
76, /* FloatSave.RegisterArea[2 * 10] */
|
|
86, /* FloatSave.RegisterArea[3 * 10] */
|
|
96, /* FloatSave.RegisterArea[4 * 10] */
|
|
106, /* FloatSave.RegisterArea[5 * 10] */
|
|
116, /* FloatSave.RegisterArea[6 * 10] */
|
|
126, /* FloatSave.RegisterArea[7 * 10] */
|
|
|
|
28, /* FloatSave.ControlWord */
|
|
32, /* FloatSave.StatusWord */
|
|
36, /* FloatSave.TagWord */
|
|
44, /* FloatSave.ErrorSelector */
|
|
40, /* FloatSave.ErrorOffset */
|
|
52, /* FloatSave.DataSelector */
|
|
48, /* FloatSave.DataOffset */
|
|
44, /* FloatSave.ErrorSelector */
|
|
|
|
/* XMM0-7 */
|
|
364, /* ExtendedRegisters[10*16] */
|
|
380, /* ExtendedRegisters[11*16] */
|
|
396, /* ExtendedRegisters[12*16] */
|
|
412, /* ExtendedRegisters[13*16] */
|
|
428, /* ExtendedRegisters[14*16] */
|
|
444, /* ExtendedRegisters[15*16] */
|
|
460, /* ExtendedRegisters[16*16] */
|
|
476, /* ExtendedRegisters[17*16] */
|
|
|
|
/* MXCSR */
|
|
228 /* ExtendedRegisters[24] */
|
|
};
|
|
|
|
#define I386_WINDOWS_SIZEOF_GREGSET 716
|
|
|
|
/* Return the appropriate register set for the core section identified
|
|
by SECT_NAME and SECT_SIZE. */
|
|
|
|
static const struct regset *
|
|
i386_windows_regset_from_core_section (struct gdbarch *gdbarch,
|
|
const char *sect_name, size_t sect_size)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
if (strcmp (sect_name, ".reg") == 0
|
|
&& sect_size == I386_WINDOWS_SIZEOF_GREGSET)
|
|
{
|
|
if (tdep->gregset == NULL)
|
|
tdep->gregset = regset_alloc (gdbarch, i386_supply_gregset,
|
|
i386_collect_gregset);
|
|
return tdep->gregset;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct cpms_data
|
|
{
|
|
struct gdbarch *gdbarch;
|
|
struct obstack *obstack;
|
|
int module_count;
|
|
};
|
|
|
|
static void
|
|
core_process_module_section (bfd *abfd, asection *sect, void *obj)
|
|
{
|
|
struct cpms_data *data = obj;
|
|
enum bfd_endian byte_order = gdbarch_byte_order (data->gdbarch);
|
|
|
|
char *module_name;
|
|
size_t module_name_size;
|
|
CORE_ADDR base_addr;
|
|
|
|
char *buf = NULL;
|
|
|
|
if (strncmp (sect->name, ".module", 7) != 0)
|
|
return;
|
|
|
|
buf = xmalloc (bfd_get_section_size (sect) + 1);
|
|
if (!buf)
|
|
{
|
|
printf_unfiltered ("memory allocation failed for %s\n", sect->name);
|
|
goto out;
|
|
}
|
|
if (!bfd_get_section_contents (abfd, sect,
|
|
buf, 0, bfd_get_section_size (sect)))
|
|
goto out;
|
|
|
|
|
|
|
|
/* A DWORD (data_type) followed by struct windows_core_module_info. */
|
|
|
|
base_addr =
|
|
extract_unsigned_integer (buf + 4, 4, byte_order);
|
|
|
|
module_name_size =
|
|
extract_unsigned_integer (buf + 8, 4, byte_order);
|
|
|
|
module_name = buf + 12;
|
|
if (module_name - buf + module_name_size > bfd_get_section_size (sect))
|
|
goto out;
|
|
|
|
/* The first module is the .exe itself. */
|
|
if (data->module_count != 0)
|
|
windows_xfer_shared_library (module_name, base_addr,
|
|
data->gdbarch, data->obstack);
|
|
data->module_count++;
|
|
|
|
out:
|
|
if (buf)
|
|
xfree (buf);
|
|
return;
|
|
}
|
|
|
|
static LONGEST
|
|
windows_core_xfer_shared_libraries (struct gdbarch *gdbarch,
|
|
gdb_byte *readbuf,
|
|
ULONGEST offset, LONGEST len)
|
|
{
|
|
struct obstack obstack;
|
|
const char *buf;
|
|
LONGEST len_avail;
|
|
struct cpms_data data = { gdbarch, &obstack, 0 };
|
|
|
|
obstack_init (&obstack);
|
|
obstack_grow_str (&obstack, "<library-list>\n");
|
|
bfd_map_over_sections (core_bfd,
|
|
core_process_module_section,
|
|
&data);
|
|
obstack_grow_str0 (&obstack, "</library-list>\n");
|
|
|
|
buf = obstack_finish (&obstack);
|
|
len_avail = strlen (buf);
|
|
if (offset >= len_avail)
|
|
return 0;
|
|
|
|
if (len > len_avail - offset)
|
|
len = len_avail - offset;
|
|
memcpy (readbuf, buf + offset, len);
|
|
|
|
obstack_free (&obstack, NULL);
|
|
return len;
|
|
}
|
|
|
|
/* This is how we want PTIDs from core files to be printed. */
|
|
|
|
static char *
|
|
i386_windows_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
|
|
{
|
|
static char buf[80];
|
|
|
|
if (ptid_get_lwp (ptid) != 0)
|
|
{
|
|
snprintf (buf, sizeof (buf), "Thread 0x%lx", ptid_get_lwp (ptid));
|
|
return buf;
|
|
}
|
|
|
|
return normal_pid_to_str (ptid);
|
|
}
|
|
|
|
static CORE_ADDR
|
|
i386_cygwin_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
|
|
{
|
|
return i386_pe_skip_trampoline_code (frame, pc, NULL);
|
|
}
|
|
|
|
static const char *
|
|
i386_cygwin_auto_wide_charset (void)
|
|
{
|
|
return "UTF-16";
|
|
}
|
|
|
|
static void
|
|
i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
|
|
|
|
set_gdbarch_skip_main_prologue (gdbarch, i386_skip_main_prologue);
|
|
|
|
tdep->struct_return = reg_struct_return;
|
|
|
|
tdep->gregset_reg_offset = i386_windows_gregset_reg_offset;
|
|
tdep->gregset_num_regs = ARRAY_SIZE (i386_windows_gregset_reg_offset);
|
|
tdep->sizeof_gregset = I386_WINDOWS_SIZEOF_GREGSET;
|
|
|
|
set_solib_ops (gdbarch, &solib_target_so_ops);
|
|
|
|
/* Core file support. */
|
|
set_gdbarch_regset_from_core_section
|
|
(gdbarch, i386_windows_regset_from_core_section);
|
|
set_gdbarch_core_xfer_shared_libraries
|
|
(gdbarch, windows_core_xfer_shared_libraries);
|
|
set_gdbarch_core_pid_to_str (gdbarch, i386_windows_core_pid_to_str);
|
|
|
|
set_gdbarch_auto_wide_charset (gdbarch, i386_cygwin_auto_wide_charset);
|
|
|
|
/* Canonical paths on this target look like
|
|
`c:\Program Files\Foo App\mydll.dll', for example. */
|
|
set_gdbarch_has_dos_based_file_system (gdbarch, 1);
|
|
}
|
|
|
|
static enum gdb_osabi
|
|
i386_cygwin_osabi_sniffer (bfd *abfd)
|
|
{
|
|
char *target_name = bfd_get_target (abfd);
|
|
|
|
/* Interix also uses pei-i386.
|
|
We need a way to distinguish between the two. */
|
|
if (strcmp (target_name, "pei-i386") == 0)
|
|
return GDB_OSABI_CYGWIN;
|
|
|
|
/* Cygwin uses elf core dumps. Do not claim all ELF executables,
|
|
check whether there is a .reg section of proper size. */
|
|
if (strcmp (target_name, "elf32-i386") == 0)
|
|
{
|
|
asection *section = bfd_get_section_by_name (abfd, ".reg");
|
|
if (section
|
|
&& bfd_section_size (abfd, section) == I386_WINDOWS_SIZEOF_GREGSET)
|
|
return GDB_OSABI_CYGWIN;
|
|
}
|
|
|
|
return GDB_OSABI_UNKNOWN;
|
|
}
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
|
void _initialize_i386_cygwin_tdep (void);
|
|
|
|
void
|
|
_initialize_i386_cygwin_tdep (void)
|
|
{
|
|
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
|
|
i386_cygwin_osabi_sniffer);
|
|
|
|
/* Cygwin uses elf core dumps. */
|
|
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
|
|
i386_cygwin_osabi_sniffer);
|
|
|
|
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
|
|
i386_cygwin_init_abi);
|
|
}
|