Use enums for human-readable exception information.
[deliverable/binutils-gdb.git] / gdb / windows-tdep.c
index 58f8838b885d20fdd01b24dadbc82bfa1b4c7714..e9787887a4af87c0faf547b916ecf71feea72dec 100644 (file)
@@ -50,7 +50,7 @@ enum
    WINDOWS_SIGILL = 4,
    WINDOWS_SIGTRAP = 5,        /* MinGW64/Cygwin */
 #ifdef __CYGWIN__
-   WINDOWS_SGABRT = 6,
+   WINDOWS_SIGABRT = 6,
 #else
    WINDOWS_SIGIOT = 6, /* MinGW64 */
 #endif
@@ -153,6 +153,30 @@ static const int FULL_TIB_SIZE = 0x1000;
 
 static bool maint_display_all_tib = false;
 
+static struct gdbarch_data *windows_gdbarch_data_handle;
+
+struct windows_gdbarch_data
+{
+  struct type *siginfo_type;
+};
+
+/* Allocate windows_gdbarch_data for an arch.  */
+
+static void *
+init_windows_gdbarch_data (struct gdbarch *gdbarch)
+{
+  return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct windows_gdbarch_data);
+}
+
+/* Get windows_gdbarch_data of an arch.  */
+
+static struct windows_gdbarch_data *
+get_windows_gdbarch_data (struct gdbarch *gdbarch)
+{
+  return ((struct windows_gdbarch_data *)
+         gdbarch_data (gdbarch, windows_gdbarch_data_handle));
+}
+
 /* Define Thread Local Base pointer type.  */
 
 static struct type *
@@ -165,6 +189,8 @@ windows_get_tlb_type (struct gdbarch *gdbarch)
   struct type *peb_type, *peb_ptr_type, *list_type;
   struct type *module_list_ptr_type;
   struct type *tib_type, *seh_type, *tib_ptr_type, *seh_ptr_type;
+  struct type *word_type, *wchar_type, *wchar_ptr_type;
+  struct type *uni_str_type, *rupp_type, *rupp_ptr_type;
 
   /* Do not rebuild type if same gdbarch as last time.  */
   if (last_tlb_type && last_gdbarch == gdbarch)
@@ -174,7 +200,13 @@ windows_get_tlb_type (struct gdbarch *gdbarch)
                                 1, "DWORD_PTR");
   dword32_type = arch_integer_type (gdbarch, 32,
                                 1, "DWORD32");
+  word_type = arch_integer_type (gdbarch, 16,
+                                1, "WORD");
+  wchar_type = arch_integer_type (gdbarch, 16,
+                                 1, "wchar_t");
   void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
+  wchar_ptr_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
+                                     NULL, wchar_type);
 
   /* list entry */
 
@@ -219,6 +251,57 @@ windows_get_tlb_type (struct gdbarch *gdbarch)
                                NULL);
   TYPE_TARGET_TYPE (peb_ldr_ptr_type) = peb_ldr_type;
 
+  /* struct UNICODE_STRING */
+  uni_str_type = arch_composite_type (gdbarch, "unicode_string",
+                                     TYPE_CODE_STRUCT);
+
+  append_composite_type_field (uni_str_type, "length", word_type);
+  append_composite_type_field (uni_str_type, "maximum_length", word_type);
+  append_composite_type_field_aligned (uni_str_type, "buffer",
+                                      wchar_ptr_type,
+                                      TYPE_LENGTH (wchar_ptr_type));
+
+  /* struct _RTL_USER_PROCESS_PARAMETERS */
+  rupp_type = arch_composite_type (gdbarch, "rtl_user_process_parameters",
+                                  TYPE_CODE_STRUCT);
+
+  append_composite_type_field (rupp_type, "maximum_length", dword32_type);
+  append_composite_type_field (rupp_type, "length", dword32_type);
+  append_composite_type_field (rupp_type, "flags", dword32_type);
+  append_composite_type_field (rupp_type, "debug_flags", dword32_type);
+  append_composite_type_field (rupp_type, "console_handle", void_ptr_type);
+  append_composite_type_field (rupp_type, "console_flags", dword32_type);
+  append_composite_type_field_aligned (rupp_type, "standard_input",
+                                      void_ptr_type,
+                                      TYPE_LENGTH (void_ptr_type));
+  append_composite_type_field (rupp_type, "standard_output", void_ptr_type);
+  append_composite_type_field (rupp_type, "standard_error", void_ptr_type);
+  append_composite_type_field (rupp_type, "current_directory", uni_str_type);
+  append_composite_type_field (rupp_type, "current_directory_handle",
+                              void_ptr_type);
+  append_composite_type_field (rupp_type, "dll_path", uni_str_type);
+  append_composite_type_field (rupp_type, "image_path_name", uni_str_type);
+  append_composite_type_field (rupp_type, "command_line", uni_str_type);
+  append_composite_type_field (rupp_type, "environment", void_ptr_type);
+  append_composite_type_field (rupp_type, "starting_x", dword32_type);
+  append_composite_type_field (rupp_type, "starting_y", dword32_type);
+  append_composite_type_field (rupp_type, "count_x", dword32_type);
+  append_composite_type_field (rupp_type, "count_y", dword32_type);
+  append_composite_type_field (rupp_type, "count_chars_x", dword32_type);
+  append_composite_type_field (rupp_type, "count_chars_y", dword32_type);
+  append_composite_type_field (rupp_type, "fill_attribute", dword32_type);
+  append_composite_type_field (rupp_type, "window_flags", dword32_type);
+  append_composite_type_field (rupp_type, "show_window_flags", dword32_type);
+  append_composite_type_field_aligned (rupp_type, "window_title",
+                                      uni_str_type,
+                                      TYPE_LENGTH (void_ptr_type));
+  append_composite_type_field (rupp_type, "desktop_info", uni_str_type);
+  append_composite_type_field (rupp_type, "shell_info", uni_str_type);
+  append_composite_type_field (rupp_type, "runtime_data", uni_str_type);
+
+  rupp_ptr_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
+                                    NULL, rupp_type);
+
 
   /* struct process environment block */
   peb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
@@ -229,7 +312,7 @@ windows_get_tlb_type (struct gdbarch *gdbarch)
   append_composite_type_field (peb_type, "mutant", void_ptr_type);
   append_composite_type_field (peb_type, "image_base_address", void_ptr_type);
   append_composite_type_field (peb_type, "ldr", peb_ldr_ptr_type);
-  append_composite_type_field (peb_type, "process_parameters", void_ptr_type);
+  append_composite_type_field (peb_type, "process_parameters", rupp_ptr_type);
   append_composite_type_field (peb_type, "sub_system_data", void_ptr_type);
   append_composite_type_field (peb_type, "process_heap", void_ptr_type);
   append_composite_type_field (peb_type, "fast_peb_lock", void_ptr_type);
@@ -424,19 +507,27 @@ display_tib (const char * args, int from_tty)
 
 void
 windows_xfer_shared_library (const char* so_name, CORE_ADDR load_addr,
+                            CORE_ADDR *text_offset_cached,
                             struct gdbarch *gdbarch, struct obstack *obstack)
 {
-  CORE_ADDR text_offset;
+  CORE_ADDR text_offset = text_offset_cached ? *text_offset_cached : 0;
 
   obstack_grow_str (obstack, "<library name=\"");
   std::string p = xml_escape_text (so_name);
   obstack_grow_str (obstack, p.c_str ());
   obstack_grow_str (obstack, "\"><segment address=\"");
-  gdb_bfd_ref_ptr dll (gdb_bfd_open (so_name, gnutarget, -1));
-  /* The following calls are OK even if dll is NULL.
-     The default value 0x1000 is returned by pe_text_section_offset
-     in that case.  */
-  text_offset = pe_text_section_offset (dll.get ());
+
+  if (!text_offset)
+    {
+      gdb_bfd_ref_ptr dll (gdb_bfd_open (so_name, gnutarget, -1));
+      /* The following calls are OK even if dll is NULL.
+        The default value 0x1000 is returned by pe_text_section_offset
+        in that case.  */
+      text_offset = pe_text_section_offset (dll.get ());
+      if (text_offset_cached)
+       *text_offset_cached = text_offset;
+    }
+
   obstack_grow_str (obstack, paddress (gdbarch, load_addr + text_offset));
   obstack_grow_str (obstack, "\"/></library>");
 }
@@ -589,6 +680,139 @@ windows_gdb_signal_to_target (struct gdbarch *gdbarch, enum gdb_signal signal)
   return -1;
 }
 
+struct enum_value_name
+{
+  uint32_t value;
+  const char *name;
+};
+
+/* Allocate a TYPE_CODE_ENUM type structure with its named values.  */
+
+static struct type *
+create_enum (struct gdbarch *gdbarch, int bit, const char *name,
+            const struct enum_value_name *values, int count)
+{
+  struct type *type;
+  int i;
+
+  type = arch_type (gdbarch, TYPE_CODE_ENUM, bit, name);
+  TYPE_NFIELDS (type) = count;
+  TYPE_FIELDS (type) = (struct field *)
+    TYPE_ZALLOC (type, sizeof (struct field) * count);
+  TYPE_UNSIGNED (type) = 1;
+
+  for (i = 0; i < count; i++)
+  {
+    TYPE_FIELD_NAME (type, i) = values[i].name;
+    SET_FIELD_ENUMVAL (TYPE_FIELD (type, i), values[i].value);
+  }
+
+  return type;
+}
+
+static const struct enum_value_name exception_values[] =
+{
+  { 0x40000015, "FATAL_APP_EXIT" },
+  { 0x40010005, "DBG_CONTROL_C" },
+  { 0x40010008, "DBG_CONTROL_BREAK" },
+  { 0x80000002, "DATATYPE_MISALIGNMENT" },
+  { 0x80000003, "BREAKPOINT" },
+  { 0x80000004, "SINGLE_STEP" },
+  { 0xC0000005, "ACCESS_VIOLATION" },
+  { 0xC0000006, "IN_PAGE_ERROR" },
+  { 0xC000001D, "ILLEGAL_INSTRUCTION" },
+  { 0xC0000025, "NONCONTINUABLE_EXCEPTION" },
+  { 0xC0000026, "INVALID_DISPOSITION" },
+  { 0xC000008C, "ARRAY_BOUNDS_EXCEEDED" },
+  { 0xC000008D, "FLOAT_DENORMAL_OPERAND" },
+  { 0xC000008E, "FLOAT_DIVIDE_BY_ZERO" },
+  { 0xC000008F, "FLOAT_INEXACT_RESULT" },
+  { 0xC0000090, "FLOAT_INVALID_OPERATION" },
+  { 0xC0000091, "FLOAT_OVERFLOW" },
+  { 0xC0000092, "FLOAT_STACK_CHECK" },
+  { 0xC0000093, "FLOAT_UNDERFLOW" },
+  { 0xC0000094, "INTEGER_DIVIDE_BY_ZERO" },
+  { 0xC0000095, "INTEGER_OVERFLOW" },
+  { 0xC0000096, "PRIV_INSTRUCTION" },
+  { 0xC00000FD, "STACK_OVERFLOW" },
+  { 0xC0000409, "FAST_FAIL" },
+};
+
+static const struct enum_value_name violation_values[] =
+{
+  { 0, "READ_ACCESS_VIOLATION" },
+  { 1, "WRITE_ACCESS_VIOLATION" },
+  { 8, "DATA_EXECUTION_PREVENTION_VIOLATION" },
+};
+
+/* Implement the "get_siginfo_type" gdbarch method.  */
+
+static struct type *
+windows_get_siginfo_type (struct gdbarch *gdbarch)
+{
+  struct windows_gdbarch_data *windows_gdbarch_data;
+  struct type *dword_type, *pvoid_type, *ulongptr_type;
+  struct type *code_enum, *violation_enum;
+  struct type *violation_type, *para_type, *siginfo_ptr_type, *siginfo_type;
+
+  windows_gdbarch_data = get_windows_gdbarch_data (gdbarch);
+  if (windows_gdbarch_data->siginfo_type != NULL)
+    return windows_gdbarch_data->siginfo_type;
+
+  dword_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
+                                 1, "DWORD");
+  pvoid_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch), "PVOID",
+                                 builtin_type (gdbarch)->builtin_void);
+  ulongptr_type = arch_integer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
+                                    1, "ULONG_PTR");
+
+  /* ExceptionCode value names */
+  code_enum = create_enum (gdbarch, gdbarch_int_bit (gdbarch),
+                          "ExceptionCode", exception_values,
+                          ARRAY_SIZE (exception_values));
+
+  /* ACCESS_VIOLATION type names */
+  violation_enum = create_enum (gdbarch, gdbarch_ptr_bit (gdbarch),
+                               "ViolationType", violation_values,
+                               ARRAY_SIZE (violation_values));
+
+  /* ACCESS_VIOLATION information */
+  violation_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (violation_type, "Type", violation_enum);
+  append_composite_type_field (violation_type, "Address", pvoid_type);
+
+  /* Unnamed union of the documented field ExceptionInformation,
+     and the alternative AccessViolationInformation (which displays
+     human-readable values for ExceptionCode ACCESS_VIOLATION).  */
+  para_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+  append_composite_type_field (para_type, "ExceptionInformation",
+                              lookup_array_range_type (ulongptr_type, 0, 14));
+  append_composite_type_field (para_type, "AccessViolationInformation",
+                              violation_type);
+
+  siginfo_type = arch_composite_type (gdbarch, "EXCEPTION_RECORD",
+                                     TYPE_CODE_STRUCT);
+  siginfo_ptr_type = arch_pointer_type (gdbarch, gdbarch_ptr_bit (gdbarch),
+                                       NULL, siginfo_type);
+
+  /* ExceptionCode is documented as type DWORD, but here a helper
+     enum type is used instead to display a human-readable value.  */
+  append_composite_type_field (siginfo_type, "ExceptionCode", code_enum);
+  append_composite_type_field (siginfo_type, "ExceptionFlags", dword_type);
+  append_composite_type_field (siginfo_type, "ExceptionRecord",
+                              siginfo_ptr_type);
+  append_composite_type_field (siginfo_type, "ExceptionAddress",
+                              pvoid_type);
+  append_composite_type_field (siginfo_type, "NumberParameters", dword_type);
+  /* The 64-bit variant needs some padding.  */
+  append_composite_type_field_aligned (siginfo_type, "",
+                                      para_type, TYPE_LENGTH (ulongptr_type));
+
+  windows_gdbarch_data->siginfo_type = siginfo_type;
+
+  return siginfo_type;
+}
+
 /* To be called from the various GDB_OSABI_CYGWIN handlers for the
    various Windows architectures and machine types.  */
 
@@ -608,6 +832,8 @@ windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_gdbarch_gdb_signal_to_target (gdbarch, windows_gdb_signal_to_target);
 
   set_solib_ops (gdbarch, &solib_target_so_ops);
+
+  set_gdbarch_get_siginfo_type (gdbarch, windows_get_siginfo_type);
 }
 
 /* Implementation of `tlb' variable.  */
@@ -619,9 +845,13 @@ static const struct internalvar_funcs tlb_funcs =
   NULL
 };
 
+void _initialize_windows_tdep ();
 void
-_initialize_windows_tdep (void)
+_initialize_windows_tdep ()
 {
+  windows_gdbarch_data_handle
+    = gdbarch_data_register_post_init (init_windows_gdbarch_data);
+
   init_w32_command_list ();
   add_cmd ("thread-information-block", class_info, display_tib,
           _("Display thread information block."),
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