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[Qemu-devel] [PATCH v2 12/43] windbg: send data and control packets
From: |
Mihail Abakumov |
Subject: |
[Qemu-devel] [PATCH v2 12/43] windbg: send data and control packets |
Date: |
Tue, 17 Oct 2017 16:09:58 +0300 |
User-agent: |
StGit/0.17.1-dirty |
Added functions for send data and control packets to windbg.
Signed-off-by: Mihail Abakumov <address@hidden>
Signed-off-by: Pavel Dovgalyuk <address@hidden>
Signed-off-by: Dmitriy Koltunov <address@hidden>
---
windbgstub.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
diff --git a/windbgstub.c b/windbgstub.c
index ace992e2cb..8c33e0de0a 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -60,6 +60,62 @@ typedef struct WindbgState {
static WindbgState *windbg_state;
+static uint32_t compute_checksum(uint8_t *data, uint16_t len)
+{
+ uint32_t checksum = 0;
+ while (len) {
+ --len;
+ checksum += *data++;
+ }
+ return checksum;
+}
+
+__attribute__ ((unused)) /* unused yet */
+static void windbg_send_data_packet(uint8_t *data, uint16_t byte_count,
+ uint16_t type)
+{
+ uint8_t trailing_byte = PACKET_TRAILING_BYTE;
+
+ KD_PACKET packet = {
+ .PacketLeader = PACKET_LEADER,
+ .PacketType = type,
+ .ByteCount = byte_count,
+ .PacketId = windbg_state->data_packet_id,
+ .Checksum = compute_checksum(data, byte_count)
+ };
+
+ stw_p(&packet.PacketType, packet.PacketType);
+ stw_p(&packet.ByteCount, packet.ByteCount);
+ stl_p(&packet.PacketId, packet.PacketId);
+ stl_p(&packet.Checksum, packet.Checksum);
+
+ qemu_chr_fe_write(&windbg_state->chr, PTR(packet), sizeof(packet));
+ qemu_chr_fe_write(&windbg_state->chr, data, byte_count);
+ qemu_chr_fe_write(&windbg_state->chr, &trailing_byte,
+ sizeof(trailing_byte));
+
+ windbg_state->data_packet_id ^= 1;
+}
+
+__attribute__ ((unused)) /* unused yet */
+static void windbg_send_control_packet(uint16_t type)
+{
+ KD_PACKET packet = {
+ .PacketLeader = CONTROL_PACKET_LEADER,
+ .PacketType = type,
+ .ByteCount = 0,
+ .PacketId = windbg_state->ctrl_packet_id,
+ .Checksum = 0
+ };
+
+ stw_p(&packet.PacketType, packet.PacketType);
+ stl_p(&packet.PacketId, packet.PacketId);
+
+ qemu_chr_fe_write(&windbg_state->chr, PTR(packet), sizeof(packet));
+
+ windbg_state->ctrl_packet_id ^= 1;
+}
+
static void windbg_ctx_handler(ParsingContext *ctx)
{}
- [Qemu-devel] [PATCH v2 02/43] windbg: added windbg's KD header file, (continued)
- [Qemu-devel] [PATCH v2 02/43] windbg: added windbg's KD header file, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 03/43] windbg: modified windbgkd.h, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 04/43] windbg: added '-windbg' option, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 05/43] windbg: added helper features, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 06/43] windbg: added WindbgState, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 08/43] windbg: hook to wrmsr operation, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 07/43] windbg: added chardev, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 09/43] windbg: handler of fs/gs register, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 10/43] windbg: structures for parsing data stream, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 11/43] windbg: parsing data stream, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 12/43] windbg: send data and control packets,
Mihail Abakumov <=
- [Qemu-devel] [PATCH v2 14/43] windbg: init DBGKD_ANY_WAIT_STATE_CHANGE, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 13/43] windbg: handler of parsing context, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 15/43] windbg: sized data buffer, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 16/43] windbg: generate ExceptionStateChange, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 17/43] windbg: generate LoadSymbolsStateChange, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 18/43] windbg: windbg_vm_stop, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 19/43] windbg: implemented windbg_process_control_packet, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 21/43] windbg: implemented windbg_process_manipulate_packet, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 20/43] windbg: implemented windbg_process_data_packet, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 22/43] windbg: implemented kd_api_read_virtual_memory and kd_api_write_virtual_memory, Mihail Abakumov, 2017/10/17