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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [gdb/] [i386-cygwin-tdep.c] - Diff between revs 827 and 840

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/* Target-dependent code for Cygwin running on i386's, for GDB.
/* Target-dependent code for Cygwin running on i386's, for GDB.
 
 
   Copyright (C) 2003, 2007, 2008 Free Software Foundation, Inc.
   Copyright (C) 2003, 2007, 2008 Free Software Foundation, Inc.
 
 
   This file is part of GDB.
   This file is part of GDB.
 
 
   This program is free software; you can redistribute it and/or modify
   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
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   (at your option) any later version.
 
 
   This program is distributed in the hope that it will be useful,
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   GNU General Public License for more details.
 
 
   You should have received a copy of the GNU General Public License
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
#include "defs.h"
#include "defs.h"
#include "osabi.h"
#include "osabi.h"
#include "gdb_string.h"
#include "gdb_string.h"
#include "i386-tdep.h"
#include "i386-tdep.h"
#include "i386-cygwin-tdep.h"
#include "i386-cygwin-tdep.h"
#include "regset.h"
#include "regset.h"
#include "gdb_obstack.h"
#include "gdb_obstack.h"
#include "xml-support.h"
#include "xml-support.h"
#include "gdbcore.h"
#include "gdbcore.h"
#include "solib.h"
#include "solib.h"
#include "solib-target.h"
#include "solib-target.h"
 
 
/* Core file support.  */
/* Core file support.  */
 
 
/* This vector maps GDB's idea of a register's number into an address
/* This vector maps GDB's idea of a register's number into an address
   in the win32 exception context vector.  */
   in the win32 exception context vector.  */
 
 
static int i386_win32_gregset_reg_offset[] =
static int i386_win32_gregset_reg_offset[] =
{
{
  176, /* eax */
  176, /* eax */
  172, /* ecx */
  172, /* ecx */
  168, /* edx */
  168, /* edx */
  164, /* ebx */
  164, /* ebx */
 
 
  196, /* esp */
  196, /* esp */
  180, /* ebp */
  180, /* ebp */
  160, /* esi */
  160, /* esi */
  156, /* edi */
  156, /* edi */
 
 
  184, /* eip */
  184, /* eip */
  192, /* eflags */
  192, /* eflags */
  188, /* cs */
  188, /* cs */
  200, /* ss */
  200, /* ss */
 
 
  152, /* ds */
  152, /* ds */
  148, /* es */
  148, /* es */
  144, /* fs */
  144, /* fs */
  140, /* gs */
  140, /* gs */
 
 
  56, /* FloatSave.RegisterArea[0 * 10] */
  56, /* FloatSave.RegisterArea[0 * 10] */
  66, /* FloatSave.RegisterArea[1 * 10] */
  66, /* FloatSave.RegisterArea[1 * 10] */
  76, /* FloatSave.RegisterArea[2 * 10] */
  76, /* FloatSave.RegisterArea[2 * 10] */
  86, /* FloatSave.RegisterArea[3 * 10] */
  86, /* FloatSave.RegisterArea[3 * 10] */
  96, /* FloatSave.RegisterArea[4 * 10] */
  96, /* FloatSave.RegisterArea[4 * 10] */
  106, /* FloatSave.RegisterArea[5 * 10] */
  106, /* FloatSave.RegisterArea[5 * 10] */
  116, /* FloatSave.RegisterArea[6 * 10] */
  116, /* FloatSave.RegisterArea[6 * 10] */
  126, /* FloatSave.RegisterArea[7 * 10] */
  126, /* FloatSave.RegisterArea[7 * 10] */
 
 
  28, /* FloatSave.ControlWord */
  28, /* FloatSave.ControlWord */
  32, /* FloatSave.StatusWord */
  32, /* FloatSave.StatusWord */
  36, /* FloatSave.TagWord */
  36, /* FloatSave.TagWord */
  44, /* FloatSave.ErrorSelector */
  44, /* FloatSave.ErrorSelector */
  40, /* FloatSave.ErrorOffset */
  40, /* FloatSave.ErrorOffset */
  52, /* FloatSave.DataSelector */
  52, /* FloatSave.DataSelector */
  48, /* FloatSave.DataOffset */
  48, /* FloatSave.DataOffset */
  44, /* FloatSave.ErrorSelector */
  44, /* FloatSave.ErrorSelector */
 
 
  /* XMM0-7 */
  /* XMM0-7 */
  364, /* ExtendedRegisters[10*16] */
  364, /* ExtendedRegisters[10*16] */
  380, /* ExtendedRegisters[11*16] */
  380, /* ExtendedRegisters[11*16] */
  396, /* ExtendedRegisters[12*16] */
  396, /* ExtendedRegisters[12*16] */
  412, /* ExtendedRegisters[13*16] */
  412, /* ExtendedRegisters[13*16] */
  428, /* ExtendedRegisters[14*16] */
  428, /* ExtendedRegisters[14*16] */
  444, /* ExtendedRegisters[15*16] */
  444, /* ExtendedRegisters[15*16] */
  460, /* ExtendedRegisters[16*16] */
  460, /* ExtendedRegisters[16*16] */
  476, /* ExtendedRegisters[17*16] */
  476, /* ExtendedRegisters[17*16] */
 
 
  /* MXCSR */
  /* MXCSR */
  228 /* ExtendedRegisters[24] */
  228 /* ExtendedRegisters[24] */
};
};
 
 
#define I386_WIN32_SIZEOF_GREGSET 716
#define I386_WIN32_SIZEOF_GREGSET 716
 
 
/* Return the appropriate register set for the core section identified
/* Return the appropriate register set for the core section identified
   by SECT_NAME and SECT_SIZE.  */
   by SECT_NAME and SECT_SIZE.  */
 
 
static const struct regset *
static const struct regset *
i386_win32_regset_from_core_section (struct gdbarch *gdbarch,
i386_win32_regset_from_core_section (struct gdbarch *gdbarch,
                                     const char *sect_name, size_t sect_size)
                                     const char *sect_name, size_t sect_size)
{
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
 
  if (strcmp (sect_name, ".reg") == 0
  if (strcmp (sect_name, ".reg") == 0
      && sect_size == I386_WIN32_SIZEOF_GREGSET)
      && sect_size == I386_WIN32_SIZEOF_GREGSET)
    {
    {
      if (tdep->gregset == NULL)
      if (tdep->gregset == NULL)
        tdep->gregset = regset_alloc (gdbarch, i386_supply_gregset,
        tdep->gregset = regset_alloc (gdbarch, i386_supply_gregset,
                                      i386_collect_gregset);
                                      i386_collect_gregset);
      return tdep->gregset;
      return tdep->gregset;
    }
    }
 
 
  return NULL;
  return NULL;
}
}
 
 
void
void
win32_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
win32_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
                           struct obstack *obstack)
                           struct obstack *obstack)
{
{
  char *p;
  char *p;
  obstack_grow_str (obstack, "<library name=\"");
  obstack_grow_str (obstack, "<library name=\"");
  p = xml_escape_text (so_name);
  p = xml_escape_text (so_name);
  obstack_grow_str (obstack, p);
  obstack_grow_str (obstack, p);
  xfree (p);
  xfree (p);
  obstack_grow_str (obstack, "\"><segment address=\"0x");
  obstack_grow_str (obstack, "\"><segment address=\"0x");
  /* The symbols in a dll are offset by 0x1000, which is the the
  /* The symbols in a dll are offset by 0x1000, which is the the
     offset from 0 of the first byte in an image - because of the file
     offset from 0 of the first byte in an image - because of the file
     header and the section alignment. */
     header and the section alignment. */
  p = paddr_nz (load_addr + 0x1000);
  p = paddr_nz (load_addr + 0x1000);
  obstack_grow_str (obstack, p);
  obstack_grow_str (obstack, p);
  obstack_grow_str (obstack, "\"/></library>");
  obstack_grow_str (obstack, "\"/></library>");
}
}
 
 
struct cpms_data
struct cpms_data
{
{
  struct obstack *obstack;
  struct obstack *obstack;
  int module_count;
  int module_count;
};
};
 
 
static void
static void
core_process_module_section (bfd *abfd, asection *sect, void *obj)
core_process_module_section (bfd *abfd, asection *sect, void *obj)
{
{
  struct cpms_data *data = obj;
  struct cpms_data *data = obj;
 
 
  char *module_name;
  char *module_name;
  size_t module_name_size;
  size_t module_name_size;
  CORE_ADDR base_addr;
  CORE_ADDR base_addr;
 
 
  char *buf = NULL;
  char *buf = NULL;
 
 
  if (strncmp (sect->name, ".module", 7) != 0)
  if (strncmp (sect->name, ".module", 7) != 0)
    return;
    return;
 
 
  buf = xmalloc (bfd_get_section_size (sect) + 1);
  buf = xmalloc (bfd_get_section_size (sect) + 1);
  if (!buf)
  if (!buf)
    {
    {
      printf_unfiltered ("memory allocation failed for %s\n", sect->name);
      printf_unfiltered ("memory allocation failed for %s\n", sect->name);
      goto out;
      goto out;
    }
    }
  if (!bfd_get_section_contents (abfd, sect,
  if (!bfd_get_section_contents (abfd, sect,
                                 buf, 0, bfd_get_section_size (sect)))
                                 buf, 0, bfd_get_section_size (sect)))
    goto out;
    goto out;
 
 
 
 
 
 
  /* A DWORD (data_type) followed by struct win32_core_module_info.  */
  /* A DWORD (data_type) followed by struct win32_core_module_info.  */
 
 
  base_addr =
  base_addr =
    extract_unsigned_integer (buf + 4, 4);
    extract_unsigned_integer (buf + 4, 4);
 
 
  module_name_size =
  module_name_size =
    extract_unsigned_integer (buf + 8, 4);
    extract_unsigned_integer (buf + 8, 4);
 
 
  module_name = buf + 12;
  module_name = buf + 12;
  if (module_name - buf + module_name_size > bfd_get_section_size (sect))
  if (module_name - buf + module_name_size > bfd_get_section_size (sect))
    goto out;
    goto out;
 
 
  /* The first module is the .exe itself.  */
  /* The first module is the .exe itself.  */
  if (data->module_count != 0)
  if (data->module_count != 0)
    win32_xfer_shared_library (module_name, base_addr, data->obstack);
    win32_xfer_shared_library (module_name, base_addr, data->obstack);
  data->module_count++;
  data->module_count++;
 
 
out:
out:
  if (buf)
  if (buf)
    xfree (buf);
    xfree (buf);
  return;
  return;
}
}
 
 
static LONGEST
static LONGEST
win32_core_xfer_shared_libraries (struct gdbarch *gdbarch,
win32_core_xfer_shared_libraries (struct gdbarch *gdbarch,
                                  gdb_byte *readbuf,
                                  gdb_byte *readbuf,
                                  ULONGEST offset, LONGEST len)
                                  ULONGEST offset, LONGEST len)
{
{
  struct obstack obstack;
  struct obstack obstack;
  const char *buf;
  const char *buf;
  LONGEST len_avail;
  LONGEST len_avail;
  struct cpms_data data = { &obstack, 0 };
  struct cpms_data data = { &obstack, 0 };
 
 
  obstack_init (&obstack);
  obstack_init (&obstack);
  obstack_grow_str (&obstack, "<library-list>\n");
  obstack_grow_str (&obstack, "<library-list>\n");
  bfd_map_over_sections (core_bfd,
  bfd_map_over_sections (core_bfd,
                         core_process_module_section,
                         core_process_module_section,
                         &data);
                         &data);
  obstack_grow_str0 (&obstack, "</library-list>\n");
  obstack_grow_str0 (&obstack, "</library-list>\n");
 
 
  buf = obstack_finish (&obstack);
  buf = obstack_finish (&obstack);
  len_avail = strlen (buf);
  len_avail = strlen (buf);
  if (offset >= len_avail)
  if (offset >= len_avail)
    return 0;
    return 0;
 
 
  if (len > len_avail - offset)
  if (len > len_avail - offset)
    len = len_avail - offset;
    len = len_avail - offset;
  memcpy (readbuf, buf + offset, len);
  memcpy (readbuf, buf + offset, len);
 
 
  obstack_free (&obstack, NULL);
  obstack_free (&obstack, NULL);
  return len;
  return len;
}
}
 
 
static CORE_ADDR
static CORE_ADDR
i386_cygwin_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
i386_cygwin_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
{
{
  return i386_pe_skip_trampoline_code (pc, NULL);
  return i386_pe_skip_trampoline_code (pc, NULL);
}
}
 
 
static void
static void
i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
 
 
  set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
  set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
 
 
  tdep->struct_return = reg_struct_return;
  tdep->struct_return = reg_struct_return;
 
 
  tdep->gregset_reg_offset = i386_win32_gregset_reg_offset;
  tdep->gregset_reg_offset = i386_win32_gregset_reg_offset;
  tdep->gregset_num_regs = ARRAY_SIZE (i386_win32_gregset_reg_offset);
  tdep->gregset_num_regs = ARRAY_SIZE (i386_win32_gregset_reg_offset);
  tdep->sizeof_gregset = I386_WIN32_SIZEOF_GREGSET;
  tdep->sizeof_gregset = I386_WIN32_SIZEOF_GREGSET;
 
 
  set_solib_ops (gdbarch, &solib_target_so_ops);
  set_solib_ops (gdbarch, &solib_target_so_ops);
 
 
  /* Core file support.  */
  /* Core file support.  */
  set_gdbarch_regset_from_core_section
  set_gdbarch_regset_from_core_section
    (gdbarch, i386_win32_regset_from_core_section);
    (gdbarch, i386_win32_regset_from_core_section);
  set_gdbarch_core_xfer_shared_libraries
  set_gdbarch_core_xfer_shared_libraries
    (gdbarch, win32_core_xfer_shared_libraries);
    (gdbarch, win32_core_xfer_shared_libraries);
}
}
 
 
static enum gdb_osabi
static enum gdb_osabi
i386_cygwin_osabi_sniffer (bfd *abfd)
i386_cygwin_osabi_sniffer (bfd *abfd)
{
{
  char *target_name = bfd_get_target (abfd);
  char *target_name = bfd_get_target (abfd);
 
 
  /* Interix also uses pei-i386.
  /* Interix also uses pei-i386.
     We need a way to distinguish between the two. */
     We need a way to distinguish between the two. */
  if (strcmp (target_name, "pei-i386") == 0)
  if (strcmp (target_name, "pei-i386") == 0)
    return GDB_OSABI_CYGWIN;
    return GDB_OSABI_CYGWIN;
 
 
  /* Cygwin uses elf core dumps.  Do not claim all ELF executables,
  /* Cygwin uses elf core dumps.  Do not claim all ELF executables,
     check whether there is a .reg section of proper size.  */
     check whether there is a .reg section of proper size.  */
  if (strcmp (target_name, "elf32-i386") == 0)
  if (strcmp (target_name, "elf32-i386") == 0)
    {
    {
      asection *section = bfd_get_section_by_name (abfd, ".reg");
      asection *section = bfd_get_section_by_name (abfd, ".reg");
      if (section
      if (section
          && bfd_section_size (abfd, section) == I386_WIN32_SIZEOF_GREGSET)
          && bfd_section_size (abfd, section) == I386_WIN32_SIZEOF_GREGSET)
        return GDB_OSABI_CYGWIN;
        return GDB_OSABI_CYGWIN;
    }
    }
 
 
  return GDB_OSABI_UNKNOWN;
  return GDB_OSABI_UNKNOWN;
}
}
 
 
/* Provide a prototype to silence -Wmissing-prototypes.  */
/* Provide a prototype to silence -Wmissing-prototypes.  */
void _initialize_i386_cygwin_tdep (void);
void _initialize_i386_cygwin_tdep (void);
 
 
void
void
_initialize_i386_cygwin_tdep (void)
_initialize_i386_cygwin_tdep (void)
{
{
  gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
  gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
                                  i386_cygwin_osabi_sniffer);
                                  i386_cygwin_osabi_sniffer);
 
 
  /* Cygwin uses elf core dumps.  */
  /* Cygwin uses elf core dumps.  */
  gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
  gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
                                  i386_cygwin_osabi_sniffer);
                                  i386_cygwin_osabi_sniffer);
 
 
  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
                          i386_cygwin_init_abi);
                          i386_cygwin_init_abi);
}
}
 
 

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