X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fi386-cygwin-tdep.c;h=ee04752b546c0e9c83a51b9ed7cdc0bdfa9e2694;hb=21af24c8371a3e040f6f548ddfafb20114442c28;hp=9dc5b39c321c4970c21f1c21ba268aa0a48995fc;hpb=f7948b5f300d193d605b0cbfad727f23a145ff5c;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/i386-cygwin-tdep.c b/gdb/i386-cygwin-tdep.c
index 9dc5b39c32..ee04752b54 100644
--- a/gdb/i386-cygwin-tdep.c
+++ b/gdb/i386-cygwin-tdep.c
@@ -1,12 +1,12 @@
/* Target-dependent code for Cygwin running on i386's, for GDB.
- Copyright 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 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
+ 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,
@@ -15,27 +15,188 @@
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. */
+ along with this program. If not, see . */
#include "defs.h"
#include "osabi.h"
+#include "i386-tdep.h"
+#include "windows-tdep.h"
+#include "regset.h"
+#include "gdb_obstack.h"
+#include "xml-support.h"
+#include "gdbcore.h"
+#include "inferior.h"
-#include "gdb_string.h"
+/* Core file support. */
-#include "i386-tdep.h"
+/* 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
+
+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 = (struct cpms_data *) obj;
+ enum bfd_endian byte_order = gdbarch_byte_order (data->gdbarch);
+
+ char *module_name;
+ size_t module_name_size;
+ CORE_ADDR base_addr;
+
+ gdb_byte *buf = NULL;
+
+ if (!startswith (sect->name, ".module"))
+ return;
+
+ buf = (gdb_byte *) xmalloc (bfd_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_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);
+
+ if (12 + module_name_size > bfd_section_size (sect))
+ goto out;
+ module_name = (char *) buf + 12;
+
+ /* 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 ULONGEST
+windows_core_xfer_shared_libraries (struct gdbarch *gdbarch,
+ gdb_byte *readbuf,
+ ULONGEST offset, ULONGEST len)
+{
+ struct obstack obstack;
+ const char *buf;
+ ULONGEST len_avail;
+ struct cpms_data data = { gdbarch, &obstack, 0 };
+
+ obstack_init (&obstack);
+ obstack_grow_str (&obstack, "\n");
+ bfd_map_over_sections (core_bfd,
+ core_process_module_section,
+ &data);
+ obstack_grow_str0 (&obstack, "\n");
+
+ buf = (const char *) 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 std::string
+i386_windows_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid)
+{
+ if (ptid.lwp () != 0)
+ return string_printf ("Thread 0x%lx", ptid.lwp ());
+
+ return normal_pid_to_str (ptid);
+}
static CORE_ADDR
-i386_cygwin_skip_trampoline_code (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 (frame, pc, NULL);
}
-static int
-i386_cygwin_in_solib_call_trampoline (CORE_ADDR pc, char *name)
+static const char *
+i386_cygwin_auto_wide_charset (void)
{
- return (i386_pe_skip_trampoline_code (pc, name) != 0);
+ return "UTF-16";
}
static void
@@ -43,35 +204,59 @@ i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- set_gdbarch_in_solib_call_trampoline (gdbarch,
- i386_cygwin_in_solib_call_trampoline);
+ windows_init_abi (info, 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;
+
+ tdep->sizeof_fpregset = 0;
+
+ /* Core file support. */
+ 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);
}
static enum gdb_osabi
-i386_cygwin_osabi_sniffer (bfd * abfd)
-{
- char *target_name = bfd_get_target (abfd);
+i386_cygwin_osabi_sniffer (bfd *abfd)
+{
+ const 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 (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);
}