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[Qemu-devel] [PATCH 25/43] windbg: implemented kd_api_read_control_space
From: |
Mihail Abakumov |
Subject: |
[Qemu-devel] [PATCH 25/43] windbg: implemented kd_api_read_control_space and kd_api_write_control_space |
Date: |
Tue, 26 Sep 2017 14:06:26 +0300 |
User-agent: |
StGit/0.17.1-dirty |
Signed-off-by: Mihail Abakumov <address@hidden>
Signed-off-by: Pavel Dovgalyuk <address@hidden>
Signed-off-by: Dmitriy Koltunov <address@hidden>
---
include/exec/windbgstub-utils.h | 2 +
windbgstub-utils.c | 81 +++++++++++++++++++++++++++++++++++++++
windbgstub.c | 8 ++++
3 files changed, 91 insertions(+)
diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 0b683f95ac..e368b2e85d 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -106,6 +106,8 @@ void kd_api_read_virtual_memory(CPUState *cpu, PacketData
*pd);
void kd_api_write_virtual_memory(CPUState *cpu, PacketData *pd);
void kd_api_get_context(CPUState *cpu, PacketData *pd);
void kd_api_set_context(CPUState *cpu, PacketData *pd);
+void kd_api_read_control_space(CPUState *cpu, PacketData *pd);
+void kd_api_write_control_space(CPUState *cpu, PacketData *pd);
void kd_api_unsupported(CPUState *cpu, PacketData *pd);
SizedBuf kd_gen_exception_sc(CPUState *cpu);
diff --git a/windbgstub-utils.c b/windbgstub-utils.c
index b15d84c8d0..c3ae2ddf5b 100755
--- a/windbgstub-utils.c
+++ b/windbgstub-utils.c
@@ -289,6 +289,18 @@ static int windbg_write_context(CPUState *cpu, uint8_t
*buf, int len,
return 0;
}
+static int windbg_read_ks_regs(CPUState *cpu, uint8_t *buf, int len,
+ int offset)
+{
+ return 0;
+}
+
+static int windbg_write_ks_regs(CPUState *cpu, uint8_t *buf, int len,
+ int offset)
+{
+ return 0;
+}
+
void kd_api_read_virtual_memory(CPUState *cpu, PacketData *pd)
{
DBGKD_READ_MEMORY64 *mem = &pd->m64.u.ReadMemory;
@@ -361,6 +373,75 @@ void kd_api_set_context(CPUState *cpu, PacketData *pd)
}
}
+void kd_api_read_control_space(CPUState *cpu, PacketData *pd)
+{
+ DBGKD_READ_MEMORY64 *mem = &pd->m64.u.ReadMemory;
+ uint32_t len;
+ target_ulong addr;
+ int err = -1;
+
+ len = MIN(ldl_p(&mem->TransferCount), PACKET_MAX_SIZE - M64_SIZE);
+ addr = ldtul_p(&mem->TargetBaseAddress);
+
+ if (addr < sizeof(CPU_KPROCESSOR_STATE)) {
+ len = MIN(len, sizeof(CPU_KPROCESSOR_STATE) - addr);
+
+ uint32_t from_context = MAX(0, (int) (sizeof(CPU_CONTEXT) - addr));
+ uint32_t from_ks_regs = len - from_context;
+
+ if (from_context > 0) {
+ err = windbg_read_context(cpu, pd->extra, from_context, addr);
+ }
+ if (from_ks_regs > 0) {
+ err = windbg_read_ks_regs(cpu, pd->extra + from_context,
+ from_ks_regs, addr -
+ sizeof(CPU_CONTEXT) + from_context);
+ }
+ }
+
+ if (!err) {
+ pd->extra_size = len;
+ mem->ActualBytesRead = ldl_p(&len);
+ } else {
+ pd->extra_size = mem->ActualBytesRead = 0;
+ pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+ }
+}
+
+void kd_api_write_control_space(CPUState *cpu, PacketData *pd)
+{
+ DBGKD_WRITE_MEMORY64 *mem = &pd->m64.u.WriteMemory;
+ uint32_t len;
+ target_ulong addr;
+ int err = -1;
+
+ len = MIN(ldl_p(&mem->TransferCount), pd->extra_size);
+ addr = ldtul_p(&mem->TargetBaseAddress);
+
+ if (addr < sizeof(CPU_KPROCESSOR_STATE)) {
+ len = MIN(len, sizeof(CPU_KPROCESSOR_STATE) - addr);
+
+ uint32_t to_context = MAX(0, (int) (sizeof(CPU_CONTEXT) - addr));
+ uint32_t to_ks_regs = len - to_context;
+
+ if (to_context > 0) {
+ err = windbg_write_context(cpu, pd->extra, to_context, addr);
+ }
+ if (to_ks_regs > 0) {
+ err = windbg_write_ks_regs(cpu, pd->extra + to_context, to_ks_regs,
+ addr - sizeof(CPU_CONTEXT) +
to_context);
+ }
+ }
+
+ pd->extra_size = 0;
+ if (!err) {
+ mem->ActualBytesWritten = ldl_p(&len);
+ } else {
+ mem->ActualBytesWritten = 0;
+ pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+ }
+}
+
void kd_api_unsupported(CPUState *cpu, PacketData *pd)
{
WINDBG_ERROR("Catched unimplemented api %s",
diff --git a/windbgstub.c b/windbgstub.c
index 23930d195e..24d0031167 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -149,6 +149,14 @@ static void
windbg_process_manipulate_packet(ParsingContext *ctx)
kd_api_set_context(cpu, &ctx->data);
break;
+ case DbgKdReadControlSpaceApi:
+ kd_api_read_control_space(cpu, &ctx->data);
+ break;
+
+ case DbgKdWriteControlSpaceApi:
+ kd_api_write_control_space(cpu, &ctx->data);
+ break;
+
default:
kd_api_unsupported(cpu, &ctx->data);
break;
- [Qemu-devel] [PATCH 15/43] windbg: sized data buffer, (continued)
- [Qemu-devel] [PATCH 15/43] windbg: sized data buffer, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 16/43] windbg: generate ExceptionStateChange, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 17/43] windbg: generate LoadSymbolsStateChange, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 18/43] windbg: windbg_vm_stop, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 19/43] windbg: implemented windbg_process_control_packet, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 20/43] windbg: implemented windbg_process_data_packet, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 21/43] windbg: implemented windbg_process_manipulate_packet, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 22/43] windbg: implemented kd_api_read_virtual_memory and kd_api_read_virtual_memory, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 23/43] windbg: kernel's structures, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 24/43] windbg: implemented kd_api_get_context and kd_api_set_context, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 25/43] windbg: implemented kd_api_read_control_space and kd_api_write_control_space,
Mihail Abakumov <=
- [Qemu-devel] [PATCH 26/43] windbg: implemented windbg_read_context, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 28/43] windbg: implemented windbg_read_ks_regs, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 27/43] windbg: implemented windbg_write_context, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 29/43] windbg: implemented windbg_write_ks_regs, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 30/43] windbg: implemented windbg_set_sr, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 31/43] windbg: implemented windbg_set_dr, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 32/43] windbg: implemented windbg_set_dr7, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 33/43] windbg: implemented windbg_hw_breakpoint_insert and windbg_hw_breakpoint_remove, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 34/43] windbg: implemented kd_api_write_breakpoint and kd_api_restore_breakpoint, Mihail Abakumov, 2017/09/26
- [Qemu-devel] [PATCH 35/43] windbg: debug exception subscribing, Mihail Abakumov, 2017/09/26