diff options
| -rw-r--r-- | gdb/ChangeLog | 10 | ||||
| -rw-r--r-- | gdb/win32-nat.c | 128 | ||||
| -rw-r--r-- | gdb/windows-nat.c | 128 |
3 files changed, 266 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 865ac7c..9c78e68 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,13 @@ +2002-02-18 Pierre Muller <muller@ics.u-strasbg.fr> + + * win32-nat.c (display_selector): New function. Displays information + about the information returned by GetThreadSelectorEntry API function. + (display_selectors): New function. Displays the infomation of + the selector given as argument, or of CS, DS ans FS selectors + if no argument is given. + ( _initialize_inftarg): Add "w32" as info prefix command. + Add "info w32 selector" as command calling display_selectors. + 2002-02-19 Pierre Muller <muller@ics.u-strasbg.fr> * i386-tdep.c (get_longjmp_target): Fix compilation failure diff --git a/gdb/win32-nat.c b/gdb/win32-nat.c index 2f7e8cc..610af6f 100644 --- a/gdb/win32-nat.c +++ b/gdb/win32-nat.c @@ -820,6 +820,126 @@ handle_output_debug_string (struct target_waitstatus *ourstatus) return gotasig; } +static int +display_selector (HANDLE thread, DWORD sel) +{ + LDT_ENTRY info; + if (GetThreadSelectorEntry (thread, sel, &info)) + { + int base, limit; + printf_filtered ("0x%03lx: ", sel); + if (!info.HighWord.Bits.Pres) + { + puts_filtered ("Segment not present\n"); + return 0; + } + base = (info.HighWord.Bits.BaseHi << 24) + + (info.HighWord.Bits.BaseMid << 16) + + info.BaseLow; + limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; + if (info.HighWord.Bits.Granularity) + limit = (limit << 12) | 0xfff; + printf_filtered ("base=0x%08x limit=0x%08x", base, limit); + if (info.HighWord.Bits.Default_Big) + puts_filtered(" 32-bit "); + else + puts_filtered(" 16-bit "); + switch ((info.HighWord.Bits.Type & 0xf) >> 1) + { + case 0: + puts_filtered ("Data (Read-Only, Exp-up"); + break; + case 1: + puts_filtered ("Data (Read/Write, Exp-up"); + break; + case 2: + puts_filtered ("Unused segment ("); + break; + case 3: + puts_filtered ("Data (Read/Write, Exp-down"); + break; + case 4: + puts_filtered ("Code (Exec-Only, N.Conf"); + break; + case 5: + puts_filtered ("Code (Exec/Read, N.Conf"); + break; + case 6: + puts_filtered ("Code (Exec-Only, Conf"); + break; + case 7: + puts_filtered ("Code (Exec/Read, Conf"); + break; + default: + printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); + } + if ((info.HighWord.Bits.Type & 0x1) == 0) + puts_filtered(", N.Acc"); + puts_filtered (")\n"); + if ((info.HighWord.Bits.Type & 0x10) == 0) + puts_filtered("System selector "); + printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); + if (info.HighWord.Bits.Granularity) + puts_filtered ("Page granular.\n"); + else + puts_filtered ("Byte granular.\n"); + return 1; + } + else + { + printf_filtered ("Invalid selector 0x%lx.\n",sel); + return 0; + } +} + +static void +display_selectors (char * args, int from_tty) +{ + if (!current_thread) + { + puts_filtered ("Impossible to display selectors now.\n"); + return; + } + if (!args) + { + + puts_filtered ("Selector $cs\n"); + display_selector (current_thread->h, + current_thread->context.SegCs); + puts_filtered ("Selector $ds\n"); + display_selector (current_thread->h, + current_thread->context.SegDs); + puts_filtered ("Selector $es\n"); + display_selector (current_thread->h, + current_thread->context.SegEs); + puts_filtered ("Selector $ss\n"); + display_selector (current_thread->h, + current_thread->context.SegSs); + puts_filtered ("Selector $fs\n"); + display_selector (current_thread->h, + current_thread->context.SegFs); + puts_filtered ("Selector $gs\n"); + display_selector (current_thread->h, + current_thread->context.SegGs); + } + else + { + int sel; + sel = parse_and_eval_long (args); + printf_filtered ("Selector \"%s\"\n",args); + display_selector (current_thread->h, sel); + } +} + +static struct cmd_list_element *info_w32_cmdlist = NULL; + +static void +info_w32_command (char *args, int from_tty) +{ + help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); +} + + #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \ (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress) @@ -1758,6 +1878,14 @@ _initialize_inftarg (void) add_info ("dll", info_dll_command, "Status of loaded DLLs."); add_info_alias ("sharedlibrary", "dll", 1); + add_prefix_cmd ("w32", class_info, info_w32_command, + "Print information specific to Win32 debugging.", + &info_w32_cmdlist, "info w32 ", 0, &infolist); + + add_cmd ("selector", class_info, display_selectors, + "Display selectors infos.", + &info_w32_cmdlist); + add_target (&child_ops); } diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c index 2f7e8cc..610af6f 100644 --- a/gdb/windows-nat.c +++ b/gdb/windows-nat.c @@ -820,6 +820,126 @@ handle_output_debug_string (struct target_waitstatus *ourstatus) return gotasig; } +static int +display_selector (HANDLE thread, DWORD sel) +{ + LDT_ENTRY info; + if (GetThreadSelectorEntry (thread, sel, &info)) + { + int base, limit; + printf_filtered ("0x%03lx: ", sel); + if (!info.HighWord.Bits.Pres) + { + puts_filtered ("Segment not present\n"); + return 0; + } + base = (info.HighWord.Bits.BaseHi << 24) + + (info.HighWord.Bits.BaseMid << 16) + + info.BaseLow; + limit = (info.HighWord.Bits.LimitHi << 16) + info.LimitLow; + if (info.HighWord.Bits.Granularity) + limit = (limit << 12) | 0xfff; + printf_filtered ("base=0x%08x limit=0x%08x", base, limit); + if (info.HighWord.Bits.Default_Big) + puts_filtered(" 32-bit "); + else + puts_filtered(" 16-bit "); + switch ((info.HighWord.Bits.Type & 0xf) >> 1) + { + case 0: + puts_filtered ("Data (Read-Only, Exp-up"); + break; + case 1: + puts_filtered ("Data (Read/Write, Exp-up"); + break; + case 2: + puts_filtered ("Unused segment ("); + break; + case 3: + puts_filtered ("Data (Read/Write, Exp-down"); + break; + case 4: + puts_filtered ("Code (Exec-Only, N.Conf"); + break; + case 5: + puts_filtered ("Code (Exec/Read, N.Conf"); + break; + case 6: + puts_filtered ("Code (Exec-Only, Conf"); + break; + case 7: + puts_filtered ("Code (Exec/Read, Conf"); + break; + default: + printf_filtered ("Unknown type 0x%x",info.HighWord.Bits.Type); + } + if ((info.HighWord.Bits.Type & 0x1) == 0) + puts_filtered(", N.Acc"); + puts_filtered (")\n"); + if ((info.HighWord.Bits.Type & 0x10) == 0) + puts_filtered("System selector "); + printf_filtered ("Priviledge level = %d. ", info.HighWord.Bits.Dpl); + if (info.HighWord.Bits.Granularity) + puts_filtered ("Page granular.\n"); + else + puts_filtered ("Byte granular.\n"); + return 1; + } + else + { + printf_filtered ("Invalid selector 0x%lx.\n",sel); + return 0; + } +} + +static void +display_selectors (char * args, int from_tty) +{ + if (!current_thread) + { + puts_filtered ("Impossible to display selectors now.\n"); + return; + } + if (!args) + { + + puts_filtered ("Selector $cs\n"); + display_selector (current_thread->h, + current_thread->context.SegCs); + puts_filtered ("Selector $ds\n"); + display_selector (current_thread->h, + current_thread->context.SegDs); + puts_filtered ("Selector $es\n"); + display_selector (current_thread->h, + current_thread->context.SegEs); + puts_filtered ("Selector $ss\n"); + display_selector (current_thread->h, + current_thread->context.SegSs); + puts_filtered ("Selector $fs\n"); + display_selector (current_thread->h, + current_thread->context.SegFs); + puts_filtered ("Selector $gs\n"); + display_selector (current_thread->h, + current_thread->context.SegGs); + } + else + { + int sel; + sel = parse_and_eval_long (args); + printf_filtered ("Selector \"%s\"\n",args); + display_selector (current_thread->h, sel); + } +} + +static struct cmd_list_element *info_w32_cmdlist = NULL; + +static void +info_w32_command (char *args, int from_tty) +{ + help_list (info_w32_cmdlist, "info w32 ", class_info, gdb_stdout); +} + + #define DEBUG_EXCEPTION_SIMPLE(x) if (debug_exceptions) \ printf_unfiltered ("gdb: Target exception %s at 0x%08lx\n", x, \ (DWORD) current_event.u.Exception.ExceptionRecord.ExceptionAddress) @@ -1758,6 +1878,14 @@ _initialize_inftarg (void) add_info ("dll", info_dll_command, "Status of loaded DLLs."); add_info_alias ("sharedlibrary", "dll", 1); + add_prefix_cmd ("w32", class_info, info_w32_command, + "Print information specific to Win32 debugging.", + &info_w32_cmdlist, "info w32 ", 0, &infolist); + + add_cmd ("selector", class_info, display_selectors, + "Display selectors infos.", + &info_w32_cmdlist); + add_target (&child_ops); } |