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[Qemu-devel] [PATCH 2 28/39] windbg: implement kd_api_read_control_space
From: |
Mikhail Abakumov |
Subject: |
[Qemu-devel] [PATCH 2 28/39] windbg: implement kd_api_read_control_space and kd_api_write_control_space |
Date: |
Wed, 05 Dec 2018 15:54:40 +0300 |
User-agent: |
StGit/0.17.1-dirty |
Signed-off-by: Mikhail Abakumov <address@hidden>
Signed-off-by: Pavel Dovgalyuk <address@hidden>
---
include/exec/windbgstub-utils.h | 2 +
target/i386/windbgstub.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 6936fd0ffb..2781a54044 100644
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -71,6 +71,8 @@ void kd_api_read_virtual_memory(CPUState *cs, PacketData *pd);
void kd_api_write_virtual_memory(CPUState *cs, PacketData *pd);
void kd_api_get_context(CPUState *cs, PacketData *pd);
void kd_api_set_context(CPUState *cs, PacketData *pd);
+void kd_api_read_control_space(CPUState *cs, PacketData *pd);
+void kd_api_write_control_space(CPUState *cs, PacketData *pd);
void kd_api_get_context_ex(CPUState *cs, PacketData *pd);
void kd_api_set_context_ex(CPUState *cs, PacketData *pd);
void kd_api_unsupported(CPUState *cs, PacketData *pd);
diff --git a/target/i386/windbgstub.c b/target/i386/windbgstub.c
index 76cdc1d9a7..6d2e7de746 100644
--- a/target/i386/windbgstub.c
+++ b/target/i386/windbgstub.c
@@ -962,6 +962,87 @@ void kd_api_set_context(CPUState *cs, PacketData *pd)
}
}
+void kd_api_read_control_space(CPUState *cs, PacketData *pd)
+{
+ DBGKD_READ_MEMORY64 *mem = &pd->m64.u.ReadMemory;
+ target_ulong addr = ldtul_p(&mem->TargetBaseAddress);
+ uint32_t len = MIN(ldl_p(&mem->TransferCount),
+ PACKET_MAX_SIZE - sizeof(DBGKD_MANIPULATE_STATE64));
+ int err = 0;
+
+#ifdef TARGET_X86_64
+
+ switch (addr) {
+ case AMD64_DEBUG_CONTROL_SPACE_KPCR:
+ addr = KPCR.addr;
+ len = sizeof(target_ulong);
+ err = cpu_memory_rw_debug(cs, addr, pd->extra, len, 0);
+ break;
+
+ case AMD64_DEBUG_CONTROL_SPACE_KPRCB:
+ addr = VMEM_ADDR(cs, KPCR.addr + OFFSET_KPRCB);
+ len = sizeof(target_ulong);
+ err = cpu_memory_rw_debug(cs, addr, pd->extra, len, 0);
+ break;
+
+ case AMD64_DEBUG_CONTROL_SPACE_KSPECIAL:
+ len = MIN(len, sizeof(CPU_KSPECIAL_REGISTERS));
+ err = windbg_read_ks_regs(cs, pd->extra, len, 0, len);
+ break;
+
+ case AMD64_DEBUG_CONTROL_SPACE_KTHREAD:
+ addr = VMEM_ADDR(cs, addr + OFFSET_KPRCB_CURRTHREAD);
+ len = sizeof(target_ulong);
+ err = cpu_memory_rw_debug(cs, addr, pd->extra, len, 0);
+ break;
+ }
+
+#else /* TARGET_I386 */
+
+ err = windbg_rw_context_ex(cs, pd->extra, len, addr, len, true);
+
+#endif /* TARGET_I386 */
+
+ 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 *cs, PacketData *pd)
+{
+ DBGKD_WRITE_MEMORY64 *mem = &pd->m64.u.WriteMemory;
+ target_ulong addr = ldtul_p(&mem->TargetBaseAddress);
+ uint32_t len = MIN(ldl_p(&mem->TransferCount), pd->extra_size);
+ int err = 0;
+
+#ifdef TARGET_X86_64
+
+ if (addr == AMD64_DEBUG_CONTROL_SPACE_KSPECIAL) {
+ len = MIN(len, sizeof(CPU_KSPECIAL_REGISTERS));
+ err = windbg_write_ks_regs(cs, pd->extra, len, 0, len);
+ } else {
+ err = 1;
+ }
+
+#else /* TARGET_I386 */
+
+ err = windbg_rw_context_ex(cs, pd->extra, len, addr, len, false);
+
+#endif /* TARGET_I386 */
+
+ if (err) {
+ len = 0;
+ pd->m64.ReturnStatus = STATUS_UNSUCCESSFUL;
+ }
+
+ pd->extra_size = 0;
+ stl_p(&mem->ActualBytesWritten, len);
+}
+
void kd_api_get_context_ex(CPUState *cs, PacketData *pd)
{
DBGKD_CONTEXT_EX *ctx = &pd->m64.u.ContextEx;
diff --git a/windbgstub.c b/windbgstub.c
index e9d759cddf..328a04735f 100644
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -165,6 +165,14 @@ static void windbg_process_manipulate_packet(WindbgState
*state)
kd_api_set_context(cs, data);
break;
+ case DbgKdReadControlSpaceApi:
+ kd_api_read_control_space(cs, data);
+ break;
+
+ case DbgKdWriteControlSpaceApi:
+ kd_api_write_control_space(cs, data);
+ break;
+
case DbgKdGetContextExApi:
kd_api_get_context_ex(cs, data);
break;
- [Qemu-devel] [PATCH 2 18/39] windbg: implement windbg_process_control_packet, (continued)
- [Qemu-devel] [PATCH 2 18/39] windbg: implement windbg_process_control_packet, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 19/39] windbg: implement windbg_process_data_packet, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 21/39] windbg: implement kd_api_read_virtual_memory and kd_api_write_virtual_memory, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 20/39] windbg: implement windbg_process_manipulate_packet, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 22/39] windbg: some kernel structures, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 23/39] windbg: add helper functions, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 24/39] windbg: [de]serialization cpu context, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 25/39] windbg: [de]serialization cpu spec registers, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 26/39] windbg: implement kd_api_get_context and kd_api_set_context, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 27/39] windbg: implement kd_api_get_context_ex and kd_api_set_context_ex, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 28/39] windbg: implement kd_api_read_control_space and kd_api_write_control_space,
Mikhail Abakumov <=
- [Qemu-devel] [PATCH 2 29/39] windbg: implement kd_api_write_breakpoint and kd_api_restore_breakpoint, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 30/39] windbg: debug exception subscribing, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 31/39] windbg: implement kd_api_continue, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 33/39] windbg: implement kd_api_read_physical_memory and kd_api_write_physical_memory, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 32/39] windbg: implement kd_api_read_io_space and kd_api_write_io_space, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 34/39] windbg: implement kd_api_get_version, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 36/39] windbg: implement kd_api_search_memory, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 35/39] windbg: implement kd_api_read_msr and kd_api_write_msr, Mikhail Abakumov, 2018/12/05
- [Qemu-devel] [PATCH 2 37/39] windbg: implement kd_api_fill_memory, Mikhail Abakumov, 2018/12/05