diff mbox series

[v2,24/43] windbg: implemented kd_api_get_context and kd_api_set_context

Message ID 150824586699.6816.12521626029136655328.stgit@Misha-PC.lan02.inno
State New
Headers show
Series Windbg supporting | expand

Commit Message

Mikhail Abakumov Oct. 17, 2017, 1:11 p.m. UTC 
Signed-off-by: Mihail Abakumov <mikhail.abakumov@ispras.ru>
Signed-off-by: Pavel Dovgalyuk <dovgaluk@ispras.ru>
Signed-off-by: Dmitriy Koltunov <koltunov@ispras.ru>
---
 include/exec/windbgstub-utils.h |    2 ++
 target/i386/windbgstub.c        |   39 +++++++++++++++++++++++++++++++++++++++
 windbgstub.c                    |    8 ++++++++
 3 files changed, 49 insertions(+)
diff mbox series

Patch

diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 552318ad05..39fbfc8d3a 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -95,6 +95,8 @@  InitedAddr *windbg_get_version(void);
 
 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_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 dcbb8313b5..175fa09f24 100755
--- a/target/i386/windbgstub.c
+++ b/target/i386/windbgstub.c
@@ -271,6 +271,45 @@  typedef struct _CPU_KPROCESSOR_STATE {
 
 #endif
 
+static int windbg_read_context(CPUState *cpu, uint8_t *buf, int buf_size,
+                               int offset, int len)
+{
+    return 0;
+}
+
+static int windbg_write_context(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;
+
+    pd->extra_size = sizeof(CPU_CONTEXT);
+    err = windbg_read_context(cpu, pd->extra, pd->extra_size, 0,
+                              pd->extra_size);
+
+    if (err) {
+        pd->extra_size = 0;
+        pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+    }
+}
+
+void kd_api_set_context(CPUState *cpu, PacketData *pd)
+{
+    int err;
+
+    err = windbg_write_context(cpu, pd->extra, pd->extra_size, 0,
+                               sizeof(CPU_CONTEXT));
+    pd->extra_size = 0;
+
+    if (err) {
+        pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+    }
+}
+
 bool windbg_on_load(void)
 {
     CPUState *cpu = qemu_get_cpu(0);
diff --git a/windbgstub.c b/windbgstub.c
index 1725107722..ad8638b793 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -148,6 +148,14 @@  static void windbg_process_manipulate_packet(ParsingContext *ctx)
         kd_api_write_virtual_memory(cpu, &ctx->data);
         break;
 
+    case DbgKdGetContextApi:
+        kd_api_get_context(cpu, &ctx->data);
+        break;
+
+    case DbgKdSetContextApi:
+        kd_api_set_context(cpu, &ctx->data);
+        break;
+
     default:
         kd_api_unsupported(cpu, &ctx->data);
         break;