diff mbox series

[v2,42/43] windbg: implemented kd_api_fill_memory

Message ID 150824596832.6816.18169176089248824069.stgit@Misha-PC.lan02.inno
State New
Headers show
Series Windbg supporting | expand

Commit Message

Mikhail Abakumov Oct. 17, 2017, 1:12 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 |    1 +
 windbgstub-utils.c              |   39 +++++++++++++++++++++++++++++++++++++++
 windbgstub.c                    |    4 ++++
 3 files changed, 44 insertions(+)
diff mbox series

Patch

diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 6c587dadd8..0438ea44b6 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -110,6 +110,7 @@  void kd_api_get_version(CPUState *cpu, PacketData *pd);
 void kd_api_read_msr(CPUState *cpu, PacketData *pd);
 void kd_api_write_msr(CPUState *cpu, PacketData *pd);
 void kd_api_search_memory(CPUState *cpu, PacketData *pd);
+void kd_api_fill_memory(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 8417de8fb1..444bb0474d 100755
--- a/windbgstub-utils.c
+++ b/windbgstub-utils.c
@@ -294,6 +294,45 @@  void kd_api_search_memory(CPUState *cpu, PacketData *pd)
     }
 }
 
+void kd_api_fill_memory(CPUState *cpu, PacketData *pd)
+{
+    DBGKD_FILL_MEMORY *m64c = &pd->m64.u.FillMemory;
+    uint32_t len = ldl_p(&m64c->Length);
+    target_ulong addr = ldq_p(&m64c->Address);
+    uint16_t pattern = ldl_p(&m64c->PatternLength);
+    uint16_t flags = ldl_p(&m64c->Flags);
+    int err, offset = 0;
+
+    uint8_t mem[pattern];
+    memcpy(mem, pd->extra, pattern);
+
+    pd->extra_size = 0;
+
+    switch (flags) {
+    case DBGKD_FILL_MEMORY_VIRTUAL:
+        while (offset < len) {
+            err = cpu_memory_rw_debug(cpu, addr + offset, mem,
+                                      MIN(pattern, len - offset), 1);
+            offset += pattern;
+            if (err) {
+                WINDBG_DEBUG("fill_memory: No physical page mapped: " FMT_ADDR,
+                             addr);
+            }
+        }
+        break;
+
+    case DBGKD_FILL_MEMORY_PHYSICAL:
+        while (offset < len) {
+            cpu_physical_memory_rw(addr, mem, MIN(pattern, len - offset), 1);
+            offset += pattern;
+        }
+        break;
+
+    default:
+        break;
+    }
+}
+
 void kd_api_unsupported(CPUState *cpu, PacketData *pd)
 {
     WINDBG_ERROR("Caught unimplemented api %s",
diff --git a/windbgstub.c b/windbgstub.c
index d35ff6ba96..b348028dfd 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -216,6 +216,10 @@  static void windbg_process_manipulate_packet(ParsingContext *ctx)
         kd_api_search_memory(cpu, &ctx->data);
         break;
 
+    case DbgKdFillMemoryApi:
+        kd_api_fill_memory(cpu, &ctx->data);
+        break;
+
     default:
         kd_api_unsupported(cpu, &ctx->data);
         break;