Merge pull request #1122 from polaris-/gdbstub

gdbstub implementation

2 files changed, 37 insertions, 0 deletions

diff --git a/src/core/arm/skyeye_common/armstate.cpp b/src/core/arm/skyeye_common/armstate.cpp
index 0491717dc..2d814345a 100644
--- a/src/core/arm/skyeye_common/armstate.cpp
+++ b/src/core/arm/skyeye_common/armstate.cpp
@@ -7,6 +7,7 @@
 #include "core/memory.h"
 #include "core/arm/skyeye_common/armstate.h"
 #include "core/arm/skyeye_common/vfp/vfp.h"
+#include "core/gdbstub/gdbstub.h"
 
 ARMul_State::ARMul_State(PrivilegeMode initial_mode)
 {
@@ -185,8 +186,25 @@ void ARMul_State::ResetMPCoreCP15Registers()
     CP15[CP15_TLB_DEBUG_CONTROL] = 0x00000000;
 }
 
+static void CheckMemoryBreakpoint(u32 address, GDBStub::BreakpointType type)
+{
+    if (GDBStub::g_server_enabled && GDBStub::CheckBreakpoint(address, type)) {
+        LOG_DEBUG(Debug, "Found memory breakpoint @ %08x", address);
+        GDBStub::Break(true);
+    }
+}
+
+u8 ARMul_State::ReadMemory8(u32 address) const
+{
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
+
+    return Memory::Read8(address);
+}
+
 u16 ARMul_State::ReadMemory16(u32 address) const
 {
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
+
     u16 data = Memory::Read16(address);
 
     if (InBigEndianMode())
@@ -197,6 +215,8 @@ u16 ARMul_State::ReadMemory16(u32 address) const
 
 u32 ARMul_State::ReadMemory32(u32 address) const
 {
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
+
     u32 data = Memory::Read32(address);
 
     if (InBigEndianMode())
@@ -207,6 +227,8 @@ u32 ARMul_State::ReadMemory32(u32 address) const
 
 u64 ARMul_State::ReadMemory64(u32 address) const
 {
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Read);
+
     u64 data = Memory::Read64(address);
 
     if (InBigEndianMode())
@@ -215,8 +237,17 @@ u64 ARMul_State::ReadMemory64(u32 address) const
     return data;
 }
 
+void ARMul_State::WriteMemory8(u32 address, u8 data)
+{
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
+
+    Memory::Write8(address, data);
+}
+
 void ARMul_State::WriteMemory16(u32 address, u16 data)
 {
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
+
     if (InBigEndianMode())
         data = Common::swap16(data);
 
@@ -225,6 +256,8 @@ void ARMul_State::WriteMemory16(u32 address, u16 data)
 
 void ARMul_State::WriteMemory32(u32 address, u32 data)
 {
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
+
     if (InBigEndianMode())
         data = Common::swap32(data);
 
@@ -233,6 +266,8 @@ void ARMul_State::WriteMemory32(u32 address, u32 data)
 
 void ARMul_State::WriteMemory64(u32 address, u64 data)
 {
+    CheckMemoryBreakpoint(address, GDBStub::BreakpointType::Write);
+
     if (InBigEndianMode())
         data = Common::swap64(data);
 
diff --git a/src/core/arm/skyeye_common/armstate.h b/src/core/arm/skyeye_common/armstate.h
index ceb159d14..98dad9b1f 100644
--- a/src/core/arm/skyeye_common/armstate.h
+++ b/src/core/arm/skyeye_common/armstate.h
@@ -153,9 +153,11 @@ public:
 
     // Reads/writes data in big/little endian format based on the
     // state of the E (endian) bit in the APSR.
+    u8 ReadMemory8(u32 address) const;
     u16 ReadMemory16(u32 address) const;
     u32 ReadMemory32(u32 address) const;
     u64 ReadMemory64(u32 address) const;
+    void WriteMemory8(u32 address, u8 data);
     void WriteMemory16(u32 address, u16 data);
     void WriteMemory32(u32 address, u32 data);
     void WriteMemory64(u32 address, u64 data);