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[Qemu-devel] [PATCH v2 25/43] windbg: implemented kd_api_read_control_sp
From: |
Mihail Abakumov |
Subject: |
[Qemu-devel] [PATCH v2 25/43] windbg: implemented kd_api_read_control_space and kd_api_write_control_space |
Date: |
Tue, 17 Oct 2017 16:11:12 +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 +
target/i386/windbgstub.c | 89 +++++++++++++++++++++++++++++++++++++++
windbgstub.c | 8 ++++
3 files changed, 99 insertions(+)
diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 39fbfc8d3a..468a874ab7 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -97,6 +97,8 @@ 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/target/i386/windbgstub.c b/target/i386/windbgstub.c
index 175fa09f24..3e238525da 100755
--- a/target/i386/windbgstub.c
+++ b/target/i386/windbgstub.c
@@ -283,6 +283,18 @@ static int windbg_write_context(CPUState *cpu, uint8_t
*buf, int buf_size,
return 0;
}
+static int windbg_read_ks_regs(CPUState *cpu, uint8_t *buf, int buf_size,
+ int offset, int len)
+{
+ return 0;
+}
+
+static int windbg_write_ks_regs(CPUState *cpu, uint8_t *buf, int buf_size,
+ int offset, int len)
+{
+ return 0;
+}
+
void kd_api_get_context(CPUState *cpu, PacketData *pd)
{
int err;
@@ -310,6 +322,83 @@ 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;
+ uint32_t context_len;
+ uint32_t ks_regs_len;
+ target_ulong addr;
+ int err = -1;
+
+ len = MIN(ldl_p(&mem->TransferCount),
+ PACKET_MAX_SIZE - sizeof(DBGKD_MANIPULATE_STATE64));
+ addr = ldtul_p(&mem->TargetBaseAddress);
+
+ if (addr < sizeof(CPU_KPROCESSOR_STATE)) {
+ len = MIN(len, sizeof(CPU_KPROCESSOR_STATE) - addr);
+
+ context_len = MAX(0, (int) (sizeof(CPU_CONTEXT) - addr));
+ ks_regs_len = len - context_len;
+
+ if (context_len > 0) {
+ err = windbg_read_context(cpu, pd->extra, context_len, addr,
+ context_len);
+ }
+ if (ks_regs_len > 0) {
+ addr = addr - sizeof(CPU_CONTEXT) + context_len;
+ err = windbg_read_ks_regs(cpu, pd->extra + context_len,
+ ks_regs_len, addr, ks_regs_len);
+ }
+ }
+
+ if (err) {
+ len = 0;
+ pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+ }
+
+ pd->extra_size = len;
+ stl_p(&mem->ActualBytesRead, len);
+}
+
+void kd_api_write_control_space(CPUState *cpu, PacketData *pd)
+{
+ DBGKD_WRITE_MEMORY64 *mem = &pd->m64.u.WriteMemory;
+ uint32_t len;
+ uint32_t context_len;
+ uint32_t ks_regs_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);
+
+ context_len = MAX(0, (int) (sizeof(CPU_CONTEXT) - addr));
+ ks_regs_len = len - context_len;
+
+ if (context_len > 0) {
+ err = windbg_write_context(cpu, pd->extra, context_len, addr,
+ context_len);
+ }
+ if (ks_regs_len > 0) {
+ addr = addr - sizeof(CPU_CONTEXT) + context_len;
+ err = windbg_write_ks_regs(cpu, pd->extra + context_len,
+ ks_regs_len, addr, ks_regs_len);
+ }
+ }
+
+ if (err) {
+ mem->ActualBytesWritten = 0;
+ pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+ }
+
+ pd->extra_size = 0;
+ stl_p(&mem->ActualBytesWritten, len);
+}
+
bool windbg_on_load(void)
{
CPUState *cpu = qemu_get_cpu(0);
diff --git a/windbgstub.c b/windbgstub.c
index ad8638b793..5b0a15ea4e 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -156,6 +156,14 @@ 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 v2 15/43] windbg: sized data buffer, (continued)
- [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
- [Qemu-devel] [PATCH v2 23/43] windbg: kernel's structures, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 24/43] windbg: implemented kd_api_get_context and kd_api_set_context, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 25/43] windbg: implemented kd_api_read_control_space and kd_api_write_control_space,
Mihail Abakumov <=
- [Qemu-devel] [PATCH v2 26/43] windbg: implemented windbg_read_context, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 27/43] windbg: implemented windbg_write_context, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 28/43] windbg: implemented windbg_read_ks_regs, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 29/43] windbg: implemented windbg_write_ks_regs, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 30/43] windbg: implemented windbg_set_sr, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 31/43] windbg: implemented windbg_set_dr, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 32/43] windbg: implemented windbg_set_dr7, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 33/43] windbg: implemented windbg_hw_breakpoint_insert and windbg_hw_breakpoint_remove, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 34/43] windbg: implemented kd_api_write_breakpoint and kd_api_restore_breakpoint, Mihail Abakumov, 2017/10/17
- [Qemu-devel] [PATCH v2 35/43] windbg: debug exception subscribing, Mihail Abakumov, 2017/10/17