mirror of
https://github.com/reactos/reactos.git
synced 2024-05-31 17:51:49 +00:00
[KDGDB]
- As pid and tid 0 have a special meaning in GDB, use off-by-one thread and process ID when communicating with it - Properly read registers and memory from foreign thread and processes. (This time it was tested and proved to work reliably. __writecr3 ftw!) - Loop the list of processes and threads when trying to find them from ID, as PsLookupProessByThreadId and friends can't be used since we can be at any IRQL. - Add a few more debug prints to help diagnosing problems. CORE-8531 svn path=/trunk/; revision=64166
This commit is contained in:
parent
000f227784
commit
de914f2aed
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@ -7,6 +7,7 @@ list(APPEND SOURCE
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gdb_send.c
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kdcom.c
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kdpacket.c
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utils.c
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kdgdb.h)
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# TODO: AMD64, ARM...
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@ -7,24 +7,20 @@
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#include "kdgdb.h"
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#include <pstypes.h>
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/* LOCALS *********************************************************************/
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static HANDLE gdb_run_thread;
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/* We might have to attach to a process to read its memory */
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static PEPROCESS AttachedProcess = NULL;
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static ULONG_PTR gdb_run_tid;
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/* Keep track of where we are for qfThreadInfo/qsThreadInfo */
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static LIST_ENTRY* CurrentProcessEntry;
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static LIST_ENTRY* CurrentThreadEntry;
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/* GLOBALS ********************************************************************/
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HANDLE gdb_dbg_process;
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HANDLE gdb_dbg_thread;
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UINT_PTR gdb_dbg_pid;
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UINT_PTR gdb_dbg_tid;
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/* PRIVATE FUNCTIONS **********************************************************/
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static
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HANDLE
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hex_to_thread(char* buffer)
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UINT_PTR
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hex_to_tid(char* buffer)
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{
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ULONG_PTR ret = 0;
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char hex;
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@ -32,12 +28,13 @@ hex_to_thread(char* buffer)
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{
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hex = hex_value(*buffer++);
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if (hex < 0)
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return (HANDLE)ret;
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return ret;
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ret <<= 4;
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ret += hex;
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}
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return (HANDLE)ret;
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return ret;
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}
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#define hex_to_pid hex_to_tid
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static
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ULONG64
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@ -65,26 +62,26 @@ handle_gdb_set_thread(void)
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{
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case 'c':
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if (strcmp(&gdb_input[2], "-1") == 0)
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gdb_run_thread = (HANDLE)-1;
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gdb_run_tid = (ULONG_PTR)-1;
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else
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gdb_run_thread = hex_to_thread(&gdb_input[2]);
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gdb_run_tid = hex_to_tid(&gdb_input[2]);
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send_gdb_packet("OK");
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break;
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case 'g':
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KDDBGPRINT("Setting debug thread: %s.\n", gdb_input);
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if (strncmp(&gdb_input[2], "p-1", 3) == 0)
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{
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gdb_dbg_process = (HANDLE)-1;
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gdb_dbg_thread = (HANDLE)-1;
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gdb_dbg_pid = (UINT_PTR)-1;
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gdb_dbg_tid = (UINT_PTR)-1;
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}
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else
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{
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char* ptr = strstr(gdb_input, ".") + 1;
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gdb_dbg_process = hex_to_thread(&gdb_input[3]);
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gdb_dbg_pid = hex_to_pid(&gdb_input[3]);
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if (strncmp(ptr, "-1", 2) == 0)
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gdb_dbg_thread = (HANDLE)-1;
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gdb_dbg_tid = (UINT_PTR)-1;
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else
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gdb_dbg_thread = hex_to_thread(ptr);
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gdb_dbg_tid = hex_to_tid(ptr);
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}
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send_gdb_packet("OK");
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break;
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@ -112,26 +109,22 @@ static
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void
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handle_gdb_thread_alive(void)
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{
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char* ptr = strstr(gdb_input, ".") + 1;
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CLIENT_ID ClientId;
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ULONG_PTR Pid, Tid;
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PETHREAD Thread;
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NTSTATUS Status;
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ClientId.UniqueProcess = hex_to_thread(&gdb_input[2]);
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ClientId.UniqueThread = hex_to_thread(ptr);
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Pid = hex_to_pid(&gdb_input[2]);
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Tid = hex_to_tid(strstr(gdb_input, ".") + 1);
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Status = PsLookupProcessThreadByCid(&ClientId, NULL, &Thread);
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/* We cannot use PsLookupProcessThreadByCid as we could be running at any IRQL.
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* So loop. */
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KDDBGPRINT("Checking if p%p.%p is alive.\n", Pid, Tid);
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if (!NT_SUCCESS(Status))
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{
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/* Thread doesn't exist */
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Thread = find_thread(Pid, Tid);
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if (Thread != NULL)
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send_gdb_packet("OK");
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else
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send_gdb_packet("E03");
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return;
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}
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/* It's OK */
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ObDereferenceObject(Thread);
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send_gdb_packet("OK");
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}
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/* q* packets */
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@ -165,9 +158,9 @@ handle_gdb_query(
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if (strcmp(gdb_input, "qC") == 0)
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{
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char gdb_out[64];
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sprintf(gdb_out, "QC:p%p.%p;",
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PsGetThreadProcessId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread),
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PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread));
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sprintf(gdb_out, "QC:p%"PRIxPTR".%"PRIxPTR";",
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handle_to_gdb_pid(PsGetThreadProcessId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread)),
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handle_to_gdb_tid(PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread)));
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send_gdb_packet(gdb_out);
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return gdb_receive_and_interpret_packet(State, MessageData, MessageLength, KdContext);
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}
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@ -175,44 +168,35 @@ handle_gdb_query(
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if ((strncmp(gdb_input, "qfThreadInfo", 12) == 0)
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|| (strncmp(gdb_input, "qsThreadInfo", 12) == 0))
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{
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LIST_ENTRY* ProcessListHead = (LIST_ENTRY*)KdDebuggerDataBlock->PsActiveProcessHead.Pointer;
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BOOLEAN FirstThread = TRUE;
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PEPROCESS Process;
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PETHREAD Thread;
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char gdb_out[1024];
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char* ptr;
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char* ptr = gdb_out;
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BOOLEAN Resuming = strncmp(gdb_input, "qsThreadInfo", 12) == 0;
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/* Maybe this was not initialized yet */
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if (!ProcessListHead->Flink)
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{
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char gdb_out[64];
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if (Resuming)
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{
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/* there is only one thread to tell about */
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send_gdb_packet("l");
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return gdb_receive_and_interpret_packet(State, MessageData, MessageLength, KdContext);
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}
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/* Just tell GDB about the current thread */
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sprintf(gdb_out, "mp%p.%p", PsGetCurrentProcessId(), PsGetCurrentThreadId());
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send_gdb_packet(gdb_out);
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/* GDB can ask anything at this point, it isn't necessarily a qsThreadInfo packet */
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return gdb_receive_and_interpret_packet(State, MessageData, MessageLength, KdContext);
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}
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if (Resuming)
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{
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if (CurrentProcessEntry == (LIST_ENTRY*)1)
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{
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/* We're done */
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send_gdb_packet("l");
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CurrentProcessEntry = NULL;
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return gdb_receive_and_interpret_packet(State, MessageData, MessageLength, KdContext);
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}
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if (CurrentThreadEntry == NULL)
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CurrentProcessEntry = CurrentProcessEntry->Flink;
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}
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else
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CurrentProcessEntry = ProcessListHead->Flink;
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if (CurrentProcessEntry == ProcessListHead)
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if ((CurrentProcessEntry == ProcessListHead) ||
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(CurrentProcessEntry == NULL)) /* Ps is not initialized */
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{
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/* We're done */
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send_gdb_packet("l");
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/* We're almost done. Tell GDB about the idle thread */
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send_gdb_packet("mp1.1");
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CurrentProcessEntry = (LIST_ENTRY*)1;
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return gdb_receive_and_interpret_packet(State, MessageData, MessageLength, KdContext);
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}
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@ -244,7 +228,9 @@ handle_gdb_query(
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}
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ptr += _snprintf(ptr, 1024 - (ptr - gdb_out),
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"p%p.%p", PsGetProcessId(Process), PsGetThreadId(Thread));
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"p%p.%p",
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handle_to_gdb_pid(Process->UniqueProcessId),
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handle_to_gdb_tid(Thread->Cid.UniqueThread));
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if (ptr > (gdb_out + 1024))
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{
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/* send what we got */
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@ -319,11 +305,10 @@ ReadMemorySendHandler(
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KdpSendPacketHandler = NULL;
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KdpManipulateStateHandler = NULL;
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/* Detach if we have to */
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if (AttachedProcess != NULL)
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/* Reset the TLB */
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if ((gdb_dbg_pid != 0) && gdb_pid_to_handle(gdb_dbg_pid) != PsGetCurrentProcessId())
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{
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KeDetachProcess();
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AttachedProcess = NULL;
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__writecr3(PsGetCurrentProcess()->Pcb.DirectoryTableBase[0]);
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}
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}
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@ -343,17 +328,17 @@ handle_gdb_read_mem(
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MessageData->Length = 0;
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*MessageLength = 0;
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/* Attach to the debug process to read its memory */
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if (gdb_dbg_process != PsGetCurrentProcessId())
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/* Set the TLB according to the process being read. Pid 0 means any process. */
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if ((gdb_dbg_pid != 0) && gdb_pid_to_handle(gdb_dbg_pid) != PsGetCurrentProcessId())
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{
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NTSTATUS Status = PsLookupProcessByProcessId(gdb_dbg_process, &AttachedProcess);
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if (!NT_SUCCESS(Status))
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PEPROCESS AttachedProcess = find_process(gdb_dbg_pid);
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if (AttachedProcess == NULL)
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{
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KDDBGPRINT("The current GDB debug thread is invalid!");
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send_gdb_packet("E03");
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return gdb_receive_and_interpret_packet(State, MessageData, MessageLength, KdContext);
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}
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KeAttachProcess(&AttachedProcess->Pcb);
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__writecr3(AttachedProcess->Pcb.DirectoryTableBase[0]);
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}
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State->u.ReadMemory.TargetBaseAddress = hex_to_address(&gdb_input[1]);
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@ -168,15 +168,22 @@ gdb_send_exception(void)
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{
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char gdb_out[1024];
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char* ptr = gdb_out;
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DBGKM_EXCEPTION64* Exception = &CurrentStateChange.u.Exception;
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PETHREAD Thread = (PETHREAD)(ULONG_PTR)CurrentStateChange.Thread;
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/* Report to GDB */
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*ptr++ = 'T';
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ptr = exception_code_to_gdb(Exception->ExceptionRecord.ExceptionCode, ptr);
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ptr += sprintf(ptr, "thread:p%p.%p;",
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PsGetThreadProcessId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread),
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PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread));
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if (CurrentStateChange.NewState == DbgKdExceptionStateChange)
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{
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EXCEPTION_RECORD64* ExceptionRecord = &CurrentStateChange.u.Exception.ExceptionRecord;
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ptr = exception_code_to_gdb(ExceptionRecord->ExceptionCode, ptr);
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}
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else
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ptr += sprintf(ptr, "05");
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ptr += sprintf(ptr, "thread:p%" PRIxPTR ".%" PRIxPTR ";",
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handle_to_gdb_pid(PsGetThreadProcessId(Thread)),
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handle_to_gdb_tid(PsGetThreadId(Thread)));
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ptr += sprintf(ptr, "core:%x;", CurrentStateChange.Processor);
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send_gdb_packet(gdb_out);
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}
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@ -7,8 +7,6 @@
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#include "kdgdb.h"
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#include <pstypes.h>
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enum reg_name
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{
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EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI,
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void*
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thread_to_reg(PETHREAD Thread, enum reg_name reg_name, unsigned short* size)
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{
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PKTRAP_FRAME TrapFrame = Thread->Tcb.TrapFrame;
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/* See if the thread was actually scheduled */
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if (TrapFrame == NULL)
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/* See if the guy got a stack */
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if (Thread->Tcb.InitialStack == NULL)
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{
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return NULL;
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static const void* NullValue = NULL;
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/* Terminated thread ? */
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switch (reg_name)
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{
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case ESP:
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case EBP:
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case EIP:
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*size = 4;
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return &NullValue;
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default:
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return NULL;
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}
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}
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*size = 4;
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switch (reg_name)
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else if (Thread->Tcb.TrapFrame)
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{
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case EAX: return &TrapFrame->Eax;
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case ECX: return &TrapFrame->Ecx;
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case EDX: return &TrapFrame->Edx;
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case EBX: return &TrapFrame->Ebx;
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case ESP: return (TrapFrame->PreviousPreviousMode == KernelMode) ?
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&TrapFrame->TempEsp : &TrapFrame->HardwareEsp;
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case EBP: return &TrapFrame->Ebp;
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case ESI: return &TrapFrame->Esi;
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case EDI: return &TrapFrame->Edi;
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case EIP: return &TrapFrame->Eip;
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case EFLAGS: return &TrapFrame->EFlags;
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case CS: return &TrapFrame->SegCs;
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case SS: return &TrapFrame->HardwareSegSs;
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case DS: return &TrapFrame->SegDs;
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case ES: return &TrapFrame->SegEs;
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case FS: return &TrapFrame->SegFs;
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case GS: return &TrapFrame->SegGs;
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default:
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KDDBGPRINT("Unhandled regname: %d.\n", reg_name);
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PKTRAP_FRAME TrapFrame = Thread->Tcb.TrapFrame;
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*size = 4;
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switch (reg_name)
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{
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case EAX: return &TrapFrame->Eax;
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case ECX: return &TrapFrame->Ecx;
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case EDX: return &TrapFrame->Edx;
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case EBX: return &TrapFrame->Ebx;
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case ESP: return (TrapFrame->PreviousPreviousMode == KernelMode) ?
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&TrapFrame->TempEsp : &TrapFrame->HardwareEsp;
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case EBP: return &TrapFrame->Ebp;
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case ESI: return &TrapFrame->Esi;
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case EDI: return &TrapFrame->Edi;
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case EIP: return &TrapFrame->Eip;
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case EFLAGS: return &TrapFrame->EFlags;
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case CS: return &TrapFrame->SegCs;
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case SS: return &TrapFrame->HardwareSegSs;
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case DS: return &TrapFrame->SegDs;
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case ES: return &TrapFrame->SegEs;
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case FS: return &TrapFrame->SegFs;
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case GS: return &TrapFrame->SegGs;
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default:
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KDDBGPRINT("Unhandled regname: %d.\n", reg_name);
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}
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}
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else
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{
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/* The thread was not yet scheduled */
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*size = 4;
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switch(reg_name)
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{
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case ESP: return &Thread->Tcb.KernelStack;
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case EBP: return &((ULONG*)Thread->Tcb.KernelStack)[4];
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case EIP: return &Thread->StartAddress;
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default:
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return NULL;
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}
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}
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return NULL;
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}
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@ -132,7 +156,10 @@ gdb_send_registers(
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unsigned short size;
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CHAR* ptr = Registers;
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if (gdb_dbg_thread == PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread))
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KDDBGPRINT("Sending registers of thread %" PRIxPTR ".\n", gdb_dbg_tid);
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KDDBGPRINT("Current thread_id: %p.\n", PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread));
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if (((gdb_dbg_pid == 0) && (gdb_dbg_tid == 0)) ||
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gdb_tid_to_handle(gdb_dbg_tid) == PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread))
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{
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for(i=0; i < 16; i++)
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{
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@ -150,10 +177,10 @@ gdb_send_registers(
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else
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{
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PETHREAD DbgThread;
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NTSTATUS Status;
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Status = PsLookupThreadByThreadId(gdb_dbg_thread, &DbgThread);
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if (!NT_SUCCESS(Status))
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DbgThread = find_thread(gdb_dbg_pid, gdb_dbg_tid);
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if (DbgThread == NULL)
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{
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/* Thread is dead */
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send_gdb_packet("E03");
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@ -199,7 +226,8 @@ gdb_send_register(
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/* Get the GDB register name (gdb_input = "pXX") */
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reg_name = (hex_value(gdb_input[1]) << 4) | hex_value(gdb_input[2]);
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if (gdb_dbg_thread == PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread))
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if (((gdb_dbg_pid == 0) && (gdb_dbg_tid == 0)) ||
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gdb_tid_to_handle(gdb_dbg_tid) == PsGetThreadId((PETHREAD)(ULONG_PTR)CurrentStateChange.Thread))
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{
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/* We can get it from the context of the current exception */
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ptr = ctx_to_reg(&CurrentContext, reg_name, &size);
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@ -207,10 +235,10 @@ gdb_send_register(
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else
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{
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PETHREAD DbgThread;
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NTSTATUS Status;
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Status = PsLookupThreadByThreadId(gdb_dbg_thread, &DbgThread);
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if (!NT_SUCCESS(Status))
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DbgThread = find_thread(gdb_dbg_pid, gdb_dbg_tid);
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if (DbgThread == NULL)
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{
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/* Thread is dead */
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send_gdb_packet("E03");
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@ -13,9 +13,12 @@
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#include <halfuncs.h>
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#include <stdio.h>
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#include <arc/arc.h>
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#include <inttypes.h>
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#include <windbgkd.h>
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#include <kddll.h>
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||||
#include <pstypes.h>
|
||||
|
||||
#define KDDEBUG /* uncomment to enable debugging this dll */
|
||||
|
||||
#ifndef KDDEBUG
|
||||
|
@ -25,6 +28,18 @@ extern ULONG KdpDbgPrint(const char* Format, ...);
|
|||
#define KDDBGPRINT KdpDbgPrint
|
||||
#endif
|
||||
|
||||
/* GDB doesn't like pid - tid 0, so +1 them */
|
||||
FORCEINLINE HANDLE gdb_tid_to_handle(UINT_PTR Tid)
|
||||
{
|
||||
return (HANDLE)(Tid - 1);
|
||||
}
|
||||
#define gdb_pid_to_handle gdb_tid_to_handle
|
||||
FORCEINLINE UINT_PTR handle_to_gdb_tid(HANDLE Handle)
|
||||
{
|
||||
return (UINT_PTR)Handle + 1;
|
||||
}
|
||||
#define handle_to_gdb_pid handle_to_gdb_tid
|
||||
|
||||
FORCEINLINE
|
||||
VOID
|
||||
InitManipulateFromStateChange(
|
||||
|
@ -51,8 +66,8 @@ typedef KDSTATUS (*KDP_MANIPULATESTATE_HANDLER)(
|
|||
);
|
||||
|
||||
/* gdb_input.c */
|
||||
extern HANDLE gdb_dbg_thread;
|
||||
extern HANDLE gdb_dbg_process;
|
||||
extern UINT_PTR gdb_dbg_tid;
|
||||
extern UINT_PTR gdb_dbg_pid;
|
||||
extern KDSTATUS gdb_interpret_input(_Out_ DBGKD_MANIPULATE_STATE64* State, _Out_ PSTRING MessageData, _Out_ PULONG MessageLength, _Inout_ PKD_CONTEXT KdContext);
|
||||
extern KDSTATUS gdb_receive_and_interpret_packet(_Out_ DBGKD_MANIPULATE_STATE64* State, _Out_ PSTRING MessageData, _Out_ PULONG MessageLength, _Inout_ PKD_CONTEXT KdContext);
|
||||
|
||||
|
@ -79,11 +94,18 @@ extern DBGKD_ANY_WAIT_STATE_CHANGE CurrentStateChange;
|
|||
extern CONTEXT CurrentContext;
|
||||
extern DBGKD_GET_VERSION64 KdVersion;
|
||||
extern KDDEBUGGER_DATA64* KdDebuggerDataBlock;
|
||||
extern LIST_ENTRY* ProcessListHead;
|
||||
extern KDP_SEND_HANDLER KdpSendPacketHandler;
|
||||
extern KDP_MANIPULATESTATE_HANDLER KdpManipulateStateHandler;
|
||||
/* Commone ManipulateState handlers */
|
||||
extern KDSTATUS ContinueManipulateStateHandler(_Out_ DBGKD_MANIPULATE_STATE64* State, _Out_ PSTRING MessageData, _Out_ PULONG MessageLength, _Inout_ PKD_CONTEXT KdContext);
|
||||
extern KDSTATUS SetContextManipulateHandler(_Out_ DBGKD_MANIPULATE_STATE64* State, _Out_ PSTRING MessageData, _Out_ PULONG MessageLength, _Inout_ PKD_CONTEXT KdContext);
|
||||
extern PEPROCESS TheIdleProcess;
|
||||
extern PETHREAD TheIdleThread;
|
||||
|
||||
/* utils.c */
|
||||
extern PEPROCESS find_process( _In_ UINT_PTR Pid);
|
||||
extern PETHREAD find_thread(_In_ UINT_PTR Pid, _In_ UINT_PTR Tid);
|
||||
|
||||
/* arch_sup.c */
|
||||
extern KDSTATUS gdb_send_register(_Out_ DBGKD_MANIPULATE_STATE64* State, _Out_ PSTRING MessageData, _Out_ PULONG MessageLength, _Inout_ PKD_CONTEXT KdContext);
|
||||
|
|
|
@ -14,18 +14,20 @@ FirstSendHandler(
|
|||
_In_ ULONG PacketType,
|
||||
_In_ PSTRING MessageHeader,
|
||||
_In_ PSTRING MessageData);
|
||||
static BOOLEAN CanSendData = FALSE;
|
||||
static BOOLEAN InException = FALSE;
|
||||
|
||||
/* GLOBALS ********************************************************************/
|
||||
DBGKD_GET_VERSION64 KdVersion;
|
||||
KDDEBUGGER_DATA64* KdDebuggerDataBlock;
|
||||
BOOLEAN InException = FALSE;
|
||||
LIST_ENTRY* ProcessListHead;
|
||||
/* Callbacks used to communicate with KD aside from GDB */
|
||||
KDP_SEND_HANDLER KdpSendPacketHandler = FirstSendHandler;
|
||||
KDP_MANIPULATESTATE_HANDLER KdpManipulateStateHandler = NULL;
|
||||
/* Data describing the current exception */
|
||||
DBGKD_ANY_WAIT_STATE_CHANGE CurrentStateChange;
|
||||
CONTEXT CurrentContext;
|
||||
PEPROCESS TheIdleProcess;
|
||||
PETHREAD TheIdleThread;
|
||||
|
||||
/* PRIVATE FUNCTIONS **********************************************************/
|
||||
|
||||
|
@ -130,6 +132,8 @@ static
|
|||
void
|
||||
send_kd_state_change(DBGKD_ANY_WAIT_STATE_CHANGE* StateChange)
|
||||
{
|
||||
InException = TRUE;
|
||||
|
||||
switch (StateChange->NewState)
|
||||
{
|
||||
case DbgKdLoadSymbolsStateChange:
|
||||
|
@ -139,17 +143,22 @@ send_kd_state_change(DBGKD_ANY_WAIT_STATE_CHANGE* StateChange)
|
|||
break;
|
||||
}
|
||||
case DbgKdExceptionStateChange:
|
||||
{
|
||||
PETHREAD Thread = (PETHREAD)(ULONG_PTR)StateChange->Thread;
|
||||
/* Save current state for later GDB queries */
|
||||
CurrentStateChange = *StateChange;
|
||||
/* Unless GDB tells us otherwise, those are what we should have */
|
||||
gdb_dbg_thread = PsGetThreadId((PETHREAD)(ULONG_PTR)StateChange->Thread);
|
||||
gdb_dbg_process = PsGetThreadProcessId((PETHREAD)(ULONG_PTR)StateChange->Thread);
|
||||
KDDBGPRINT("Exception 0x%08x in thread p%p.%p.\n",
|
||||
StateChange->u.Exception.ExceptionRecord.ExceptionCode,
|
||||
PsGetThreadProcessId(Thread),
|
||||
PsGetThreadId(Thread));
|
||||
/* Set the current debugged process/thread accordingly */
|
||||
gdb_dbg_tid = handle_to_gdb_tid(PsGetThreadId(Thread));
|
||||
gdb_dbg_pid = handle_to_gdb_pid(PsGetThreadProcessId(Thread));
|
||||
gdb_send_exception();
|
||||
/* Next receive call will ask for the context */
|
||||
KdpManipulateStateHandler = GetContextManipulateHandler;
|
||||
/* We can now send data, since after this we will be connected to GDB */
|
||||
CanSendData = TRUE;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
/* FIXME */
|
||||
while (1);
|
||||
|
@ -162,7 +171,7 @@ send_kd_debug_io(
|
|||
_In_ DBGKD_DEBUG_IO* DebugIO,
|
||||
_In_ PSTRING String)
|
||||
{
|
||||
if (!CanSendData)
|
||||
if (InException)
|
||||
return;
|
||||
|
||||
switch (DebugIO->ApiNumber)
|
||||
|
@ -217,6 +226,9 @@ ContinueManipulateStateHandler(
|
|||
/* We definitely are at the end of the send <-> receive loop, if any */
|
||||
KdpSendPacketHandler = NULL;
|
||||
KdpManipulateStateHandler = NULL;
|
||||
/* We're not handling an exception anymore */
|
||||
InException = FALSE;
|
||||
|
||||
return KdPacketReceived;
|
||||
}
|
||||
|
||||
|
@ -244,10 +256,11 @@ GetVersionSendHandler(
|
|||
RtlCopyMemory(&KdVersion, &State->u.GetVersion64, sizeof(KdVersion));
|
||||
DebuggerDataList = (LIST_ENTRY*)(ULONG_PTR)KdVersion.DebuggerDataList;
|
||||
KdDebuggerDataBlock = CONTAINING_RECORD(DebuggerDataList->Flink, KDDEBUGGER_DATA64, Header.List);
|
||||
ProcessListHead = (LIST_ENTRY*)KdDebuggerDataBlock->PsActiveProcessHead.Pointer;
|
||||
|
||||
/* We can tell KD to continue */
|
||||
/* Now we can get the context for the current state */
|
||||
KdpSendPacketHandler = NULL;
|
||||
KdpManipulateStateHandler = ContinueManipulateStateHandler;
|
||||
KdpManipulateStateHandler = GetContextManipulateHandler;
|
||||
}
|
||||
|
||||
static
|
||||
|
@ -267,9 +280,6 @@ GetVersionManipulateStateHandler(
|
|||
KdpSendPacketHandler = GetVersionSendHandler;
|
||||
KdpManipulateStateHandler = NULL;
|
||||
|
||||
/* This will make KD breakin and we will be able to properly attach to GDB */
|
||||
KdContext->KdpControlCPending = TRUE;
|
||||
|
||||
return KdPacketReceived;
|
||||
}
|
||||
|
||||
|
@ -281,6 +291,7 @@ FirstSendHandler(
|
|||
_In_ PSTRING MessageData)
|
||||
{
|
||||
DBGKD_ANY_WAIT_STATE_CHANGE* StateChange = (DBGKD_ANY_WAIT_STATE_CHANGE*)MessageHeader->Buffer;
|
||||
PETHREAD Thread;
|
||||
|
||||
if (PacketType == PACKET_TYPE_KD_DEBUG_IO)
|
||||
{
|
||||
|
@ -296,7 +307,19 @@ FirstSendHandler(
|
|||
while(1);
|
||||
}
|
||||
|
||||
KDDBGPRINT("KDGDB: START!\n");
|
||||
|
||||
Thread = (PETHREAD)(ULONG_PTR)StateChange->Thread;
|
||||
|
||||
/* Set up the current state */
|
||||
CurrentStateChange = *StateChange;
|
||||
gdb_dbg_tid = handle_to_gdb_tid(PsGetThreadId(Thread));
|
||||
gdb_dbg_pid = handle_to_gdb_pid(PsGetThreadProcessId(Thread));
|
||||
/* This is the idle process. Save it! */
|
||||
TheIdleThread = Thread;
|
||||
TheIdleProcess = (PEPROCESS)Thread->Tcb.ApcState.Process;
|
||||
|
||||
KDDBGPRINT("Pid Tid of the first message: %" PRIxPTR", %" PRIxPTR ".\n", gdb_dbg_pid, gdb_dbg_tid);
|
||||
|
||||
/* The next receive call will be asking for the version data */
|
||||
KdpSendPacketHandler = NULL;
|
||||
|
|
71
reactos/drivers/base/kdgdb/utils.c
Normal file
71
reactos/drivers/base/kdgdb/utils.c
Normal file
|
@ -0,0 +1,71 @@
|
|||
/*
|
||||
* COPYRIGHT: GPL, see COPYING in the top level directory
|
||||
* PROJECT: ReactOS kernel
|
||||
* FILE: drivers/base/kddll/utils.c
|
||||
* PURPOSE: Misc helper functions.
|
||||
*/
|
||||
|
||||
#include "kdgdb.h"
|
||||
|
||||
/*
|
||||
* We cannot use PsLookupProcessThreadByCid or alike as we could be running at any IRQL.
|
||||
* So we have to loop over the process list.
|
||||
*/
|
||||
|
||||
PEPROCESS
|
||||
find_process(
|
||||
_In_ UINT_PTR Pid)
|
||||
{
|
||||
HANDLE ProcessId = gdb_pid_to_handle(Pid);
|
||||
LIST_ENTRY* ProcessEntry;
|
||||
PEPROCESS Process;
|
||||
|
||||
/* Special case for idle process */
|
||||
if (Pid == 1)
|
||||
return TheIdleProcess;
|
||||
|
||||
for (ProcessEntry = ProcessListHead->Flink;
|
||||
ProcessEntry != ProcessListHead;
|
||||
ProcessEntry = ProcessEntry->Flink)
|
||||
{
|
||||
Process = CONTAINING_RECORD(ProcessEntry, EPROCESS, ActiveProcessLinks);
|
||||
|
||||
if (Process->UniqueProcessId == ProcessId)
|
||||
return Process;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
PETHREAD
|
||||
find_thread(
|
||||
_In_ UINT_PTR Pid,
|
||||
_In_ UINT_PTR Tid)
|
||||
{
|
||||
HANDLE ThreadId = gdb_tid_to_handle(Tid);
|
||||
PETHREAD Thread;
|
||||
PEPROCESS Process;
|
||||
LIST_ENTRY* ThreadEntry;
|
||||
|
||||
/* Special case for the idle thread */
|
||||
if ((Pid == 1) && (Tid == 1))
|
||||
return TheIdleThread;
|
||||
|
||||
Process = find_process(Pid);
|
||||
if (!Process)
|
||||
return NULL;
|
||||
|
||||
for (ThreadEntry = Process->ThreadListHead.Flink;
|
||||
ThreadEntry != &Process->ThreadListHead;
|
||||
ThreadEntry = ThreadEntry->Flink)
|
||||
{
|
||||
Thread = CONTAINING_RECORD(ThreadEntry, ETHREAD, ThreadListEntry);
|
||||
/* For GDB, Tid == 0 means any thread */
|
||||
if ((Thread->Cid.UniqueThread == ThreadId) || (Tid == 0))
|
||||
{
|
||||
return Thread;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
Loading…
Reference in a new issue