-/* Target-dependent code for Cygwin running on i386's, for GDB.
+/* Target-dependent code for Windows (including Cygwin) running on i386's,
+ for GDB.
- Copyright (C) 2003-2020 Free Software Foundation, Inc.
+ Copyright (C) 2003-2023 Free Software Foundation, Inc.
This file is part of GDB.
#include "i386-tdep.h"
#include "windows-tdep.h"
#include "regset.h"
-#include "gdb_obstack.h"
+#include "gdbsupport/gdb_obstack.h"
#include "xml-support.h"
#include "gdbcore.h"
#include "inferior.h"
#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)
+static CORE_ADDR
+i386_windows_skip_trampoline_code (frame_info_ptr frame, CORE_ADDR pc)
{
- 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,
- NULL, data->gdbarch, data->obstack);
- data->module_count++;
-
-out:
- if (buf)
- xfree (buf);
- return;
+ return i386_pe_skip_trampoline_code (frame, pc, NULL);
}
-static ULONGEST
-windows_core_xfer_shared_libraries (struct gdbarch *gdbarch,
- gdb_byte *readbuf,
- ULONGEST offset, ULONGEST len)
+static const char *
+i386_windows_auto_wide_charset (void)
{
- struct obstack obstack;
- const char *buf;
- ULONGEST 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 = (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;
+ return "UTF-16";
}
-/* 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);
-}
+/* Implement the "push_dummy_call" gdbarch method. */
static CORE_ADDR
-i386_cygwin_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
+i386_windows_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
+ struct regcache *regcache, CORE_ADDR bp_addr,
+ int nargs, struct value **args, CORE_ADDR sp,
+ function_call_return_method return_method,
+ CORE_ADDR struct_addr)
{
- return i386_pe_skip_trampoline_code (frame, pc, NULL);
+ /* For non-static member functions of 32bit Windows programs, the thiscall
+ calling convention is used, so the 'this' pointer is passed in ECX. */
+ bool thiscall = false;
+
+ struct type *type = check_typedef (function->type ());
+ if (type->code () == TYPE_CODE_PTR)
+ type = check_typedef (type->target_type ());
+
+ /* read_subroutine_type sets for non-static member functions the
+ artificial flag of the first parameter ('this' pointer). */
+ if (type->code () == TYPE_CODE_METHOD
+ && type->num_fields () > 0
+ && TYPE_FIELD_ARTIFICIAL (type, 0)
+ && type->field (0).type ()->code () == TYPE_CODE_PTR)
+ thiscall = 1;
+
+ return i386_thiscall_push_dummy_call (gdbarch, function, regcache, bp_addr,
+ nargs, args, sp, return_method,
+ struct_addr, thiscall);
}
-static const char *
-i386_cygwin_auto_wide_charset (void)
-{
- return "UTF-16";
-}
+/* Common parts for gdbarch initialization for Windows and Cygwin on i386. */
static void
-i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+i386_windows_init_abi_common (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (gdbarch);
- windows_init_abi (info, gdbarch);
-
- set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
+ set_gdbarch_skip_trampoline_code (gdbarch, i386_windows_skip_trampoline_code);
set_gdbarch_skip_main_prologue (gdbarch, i386_skip_main_prologue);
/* 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_core_pid_to_str (gdbarch, windows_core_pid_to_str);
- set_gdbarch_auto_wide_charset (gdbarch, i386_cygwin_auto_wide_charset);
+ set_gdbarch_auto_wide_charset (gdbarch, i386_windows_auto_wide_charset);
}
-static enum gdb_osabi
-i386_cygwin_osabi_sniffer (bfd *abfd)
+/* gdbarch initialization for Windows on i386. */
+
+static void
+i386_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+ i386_windows_init_abi_common (info, gdbarch);
+ windows_init_abi (info, gdbarch);
+
+ set_gdbarch_push_dummy_call (gdbarch, i386_windows_push_dummy_call);
+}
+
+/* gdbarch initialization for Cygwin on i386. */
+
+static void
+i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+ i386_windows_init_abi_common (info, gdbarch);
+ cygwin_init_abi (info, gdbarch);
+}
+
+static gdb_osabi
+i386_windows_osabi_sniffer (bfd *abfd)
{
const char *target_name = bfd_get_target (abfd);
- if (strcmp (target_name, "pei-i386") == 0)
- return GDB_OSABI_WINDOWS;
+ if (!streq (target_name, "pei-i386"))
+ return GDB_OSABI_UNKNOWN;
- return GDB_OSABI_UNKNOWN;
+ if (is_linked_with_cygwin_dll (abfd))
+ return GDB_OSABI_CYGWIN;
+
+ return GDB_OSABI_WINDOWS;
}
static enum gdb_osabi
return GDB_OSABI_UNKNOWN;
}
-void _initialize_i386_cygwin_tdep ();
+void _initialize_i386_windows_tdep ();
void
-_initialize_i386_cygwin_tdep ()
+_initialize_i386_windows_tdep ()
{
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
- i386_cygwin_osabi_sniffer);
+ i386_windows_osabi_sniffer);
/* Cygwin uses elf core dumps. */
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
- i386_cygwin_core_osabi_sniffer);
+ i386_cygwin_core_osabi_sniffer);
- /* The Cygwin and Windows OS ABIs are currently equivalent. */
- gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
- i386_cygwin_init_abi);
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_WINDOWS,
- i386_cygwin_init_abi);
+ i386_windows_init_abi);
+ gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
+ i386_cygwin_init_abi);
}
projects / binutils-gdb.git / blobdiff