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-rw-r--r--src/core/gdbstub/gdbstub.cpp95
1 files changed, 34 insertions, 61 deletions
diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index 6c21b5998..6f9c8fa29 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -20,18 +20,18 @@
#include <iphlpapi.h>
#define SHUT_RDWR 2
#else
+#include <unistd.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
-#include <unistd.h>
#endif
#include "common/logging/log.h"
#include "common/string_util.h"
-#include <core/arm/arm_interface.h>
#include "core/core.h"
#include "core/memory.h"
+#include "core/arm/arm_interface.h"
#include "gdbstub.h"
const int GDB_BUFFER_SIZE = 10000;
@@ -67,8 +67,7 @@ static u8 command_buffer[GDB_BUFFER_SIZE];
static u32 command_length;
static u32 latest_signal = 0;
-static u32 send_signal = 0;
-static u32 step_break = 0;
+static bool step_break = false;
static bool memory_break = false;
// Binding to a port within the reserved ports range (0-1023) requires root permissions,
@@ -356,33 +355,21 @@ static void HandleSetThread() {
SendReply("E01");
}
-/// Create and send signal packet.
-static void HandleSignal() {
- std::string buffer = Common::StringFromFormat("T%02x%02x:%08x;%02x:%08x;", latest_signal, 15, htonl(Core::g_app_core->GetPC()), 13, htonl(Core::g_app_core->GetReg(13)));
-
- LOG_DEBUG(Debug_GDBStub, "Response: %s", buffer.c_str());
-
- SendReply(buffer.c_str());
-}
-
/**
- * Set signal and send packet to client through HandleSignal if signal flag is set using SendSignal.
+ * Send signal packet to client.
*
* @param signal Signal to be sent to client.
*/
-int SendSignal(u32 signal) {
+void SendSignal(u32 signal) {
if (gdbserver_socket == -1) {
- return 1;
+ return;
}
latest_signal = signal;
- if (send_signal) {
- HandleSignal();
- send_signal = 0;
- }
-
- return 0;
+ std::string buffer = Common::StringFromFormat("T%02x%02x:%08x;%02x:%08x;", latest_signal, 15, htonl(Core::g_app_core->GetPC()), 13, htonl(Core::g_app_core->GetReg(13)));
+ LOG_DEBUG(Debug_GDBStub, "Response: %s", buffer.c_str());
+ SendReply(buffer.c_str());
}
/// Read command from gdb client.
@@ -397,7 +384,6 @@ static void ReadCommand() {
} else if (c == 0x03) {
LOG_INFO(Debug_GDBStub, "gdb: found break command\n");
halt_loop = true;
- send_signal = 1;
SendSignal(SIGTRAP);
return;
} else if (c != GDB_STUB_START) {
@@ -566,17 +552,14 @@ static void WriteRegisters() {
static void ReadMemory() {
static u8 reply[GDB_BUFFER_SIZE - 4];
- int i = 1;
+ auto start_offset = command_buffer+1;
+ auto addr_pos = std::find(start_offset, command_buffer+command_length, ',');
PAddr addr = 0;
- while (command_buffer[i] != ',') {
- addr = (addr << 4) | HexCharToValue(command_buffer[i++]);
- }
- i++;
+ HexToMem((u8*)&addr, start_offset, (addr_pos - start_offset) / 2);
+ start_offset = addr_pos+1;
u32 len = 0;
- while (i < command_length) {
- len = (len << 4) | HexCharToValue(command_buffer[i++]);
- }
+ HexToMem((u8*)&len, start_offset, ((command_buffer + command_length) - start_offset) / 2);
if (len * 2 > sizeof(reply)) {
SendReply("E01");
@@ -594,31 +577,28 @@ static void ReadMemory() {
/// Modify location in memory with data received from the gdb client.
static void WriteMemory() {
- int i = 1;
+ auto start_offset = command_buffer+1;
+ auto addr_pos = std::find(start_offset, command_buffer+command_length, ',');
PAddr addr = 0;
- while (command_buffer[i] != ',') {
- addr = (addr << 4) | HexCharToValue(command_buffer[i++]);
- }
- i++;
+ HexToMem((u8*)&addr, start_offset, (addr_pos - start_offset) / 2);
+ start_offset = addr_pos+1;
+ auto len_pos = std::find(start_offset, command_buffer+command_length, ':');
u32 len = 0;
- while (command_buffer[i] != ':') {
- len = (len << 4) | HexCharToValue(command_buffer[i++]);
- }
+ HexToMem((u8*)&len, start_offset, (len_pos - start_offset) / 2);
u8* dst = Memory::GetPointer(addr);
if (!dst) {
return SendReply("E00");
}
- HexToMem(dst, command_buffer + i + 1, len);
+ HexToMem(dst, len_pos + 1, len);
SendReply("OK");
}
void Break(bool is_memory_break) {
if (!halt_loop) {
halt_loop = true;
- send_signal = 1;
SendSignal(SIGTRAP);
}
@@ -629,8 +609,7 @@ void Break(bool is_memory_break) {
static void Step() {
step_loop = true;
halt_loop = true;
- send_signal = 1;
- step_break = 1;
+ step_break = true;
SendSignal(SIGTRAP);
}
@@ -645,7 +624,7 @@ bool IsMemoryBreak() {
/// Tell the CPU to continue executing.
static void Continue() {
memory_break = false;
- step_break = 0;
+ step_break = false;
step_loop = false;
halt_loop = false;
}
@@ -694,17 +673,14 @@ static void AddBreakpoint() {
return SendReply("E01");
}
- int i = 3;
+ auto start_offset = command_buffer+3;
+ auto addr_pos = std::find(start_offset, command_buffer+command_length, ',');
PAddr addr = 0;
- while (command_buffer[i] != ',') {
- addr = addr << 4 | HexCharToValue(command_buffer[i++]);
- }
- i++;
+ HexToMem((u8*)&addr, start_offset, (addr_pos - start_offset) / 2);
+ start_offset = addr_pos+1;
u32 len = 0;
- while (i < command_length) {
- len = len << 4 | HexCharToValue(command_buffer[i++]);
- }
+ HexToMem((u8*)&len, start_offset, ((command_buffer + command_length) - start_offset) / 2);
if (type == BreakpointType::Access) {
// Access is made up of Read and Write types, so add both breakpoints
@@ -747,17 +723,14 @@ static void RemoveBreakpoint() {
return SendReply("E01");
}
- int i = 3;
+ auto start_offset = command_buffer+3;
+ auto addr_pos = std::find(start_offset, command_buffer+command_length, ',');
PAddr addr = 0;
- while (command_buffer[i] != ',') {
- addr = (addr << 4) | HexCharToValue(command_buffer[i++]);
- }
- i++;
+ HexToMem((u8*)&addr, start_offset, (addr_pos - start_offset) / 2);
+ start_offset = addr_pos+1;
u32 len = 0;
- while (i < command_length) {
- len = (len << 4) | HexCharToValue(command_buffer[i++]);
- }
+ HexToMem((u8*)&len, start_offset, ((command_buffer + command_length) - start_offset) / 2);
if (type == BreakpointType::Access) {
// Access is made up of Read and Write types, so add both breakpoints
@@ -795,7 +768,7 @@ void HandlePacket() {
HandleSetThread();
break;
case '?':
- HandleSignal();
+ SendSignal(latest_signal);
break;
case 'k':
Shutdown();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 15:17:08 +0100