diff options
| author | Hannes Domani <ssbssa@yahoo.de> | 2020-01-17 15:28:09 +0100 |
|---|---|---|
| committer | Hannes Domani <ssbssa@yahoo.de> | 2020-02-09 12:14:51 +0100 |
| commit | 7928d571c5f742a10d98b0de0ef85284c5959845 (patch) | |
| tree | 3a728942f516e96dc543fc73b17b848f7aa9849d /gdb/NEWS | |
| parent | 98d3eb9390ef5eca14200c424f22812982c06b19 (diff) | |
| download | gdb-7928d571c5f742a10d98b0de0ef85284c5959845.zip gdb-7928d571c5f742a10d98b0de0ef85284c5959845.tar.gz gdb-7928d571c5f742a10d98b0de0ef85284c5959845.tar.bz2 | |
Display ExceptionRecord for $_siginfo
Uses the $_siginfo convenience variable to show the last exception.
The type looks like this:
(gdb) pt $_siginfo
type = struct EXCEPTION_RECORD {
DWORD ExceptionCode;
DWORD ExceptionFlags;
struct EXCEPTION_RECORD *ExceptionRecord;
PVOID ExceptionAddress;
DWORD NumberParameters;
ULONG_PTR ExceptionInformation[15];
}
EXCEPTION_RECORD is documented at [1].
Example:
Program received signal SIGSEGV, Segmentation fault.
main () at crasher.c:4
4 *(int*)0x123 = 0;
(gdb) p $_siginfo
$1 = {
ExceptionCode = 3221225477,
ExceptionFlags = 0,
ExceptionRecord = 0x0,
ExceptionAddress = 0x401632 <main+18>,
NumberParameters = 2,
ExceptionInformation = {1, 291, 0 <repeats 13 times>}
}
(gdb) p/x $_siginfo.ExceptionCode
$2 = 0xc0000005
(gdb) p/x $_siginfo.ExceptionInformation[1]
$3 = 0x123
And 0xc0000005 is the value of EXCEPTION_ACCESS_VIOLATION.
[1] https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-exception_record
gdb/ChangeLog:
2020-02-09 Hannes Domani <ssbssa@yahoo.de>
* NEWS: Mention $_siginfo support for Windows.
* windows-nat.c (handle_exception): Set siginfo_er.
(windows_nat_target::mourn_inferior): Reset siginfo_er.
(windows_xfer_siginfo): New function.
(windows_nat_target::xfer_partial): Call windows_xfer_siginfo.
* windows-tdep.c (struct windows_gdbarch_data): New struct.
(init_windows_gdbarch_data): New function.
(get_windows_gdbarch_data): New function.
(windows_get_siginfo_type): New function.
(windows_init_abi): Register windows_get_siginfo_type.
(_initialize_windows_tdep): Register init_windows_gdbarch_data.
gdbserver/ChangeLog:
2020-02-09 Hannes Domani <ssbssa@yahoo.de>
* win32-low.c (win32_clear_inferiors): Reset siginfo_er.
(handle_exception): Set siginfo_er.
(win32_xfer_siginfo): New function.
Diffstat (limited to 'gdb/NEWS')
| -rw-r--r-- | gdb/NEWS | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -10,6 +10,9 @@ that support it (see entry for GDB 9, below), providing faster performance for programs with many symbols. +* The $_siginfo convenience variable now also works on Windows targets, + and will display the EXCEPTION_RECORD of the last handled exception. + * New commands set exec-file-mismatch -- Set exec-file-mismatch handling (ask|warn|off). |