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Diffstat (limited to 'src/core/gdbstub/gdbstub.cpp')
-rw-r--r--src/core/gdbstub/gdbstub.cpp83
1 files changed, 45 insertions, 38 deletions
diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index aea43e92b..d88e25073 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -5,6 +5,7 @@
// Originally written by Sven Peter <sven@fail0verflow.com> for anergistic.
#include <algorithm>
+#include <atomic>
#include <climits>
#include <csignal>
#include <cstdarg>
@@ -15,8 +16,8 @@
#include <fcntl.h>
#ifdef _WIN32
-#include <WinSock2.h>
-#include <common/x64/abi.h>
+#include <winsock2.h>
+// winsock2.h needs to be included first to prevent winsock.h being included by other includes
#include <io.h>
#include <iphlpapi.h>
#include <ws2tcpip.h>
@@ -34,6 +35,7 @@
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/gdbstub/gdbstub.h"
+#include "core/loader/loader.h"
#include "core/memory.h"
const int GDB_BUFFER_SIZE = 10000;
@@ -130,7 +132,10 @@ static u16 gdbstub_port = 24689;
static bool halt_loop = true;
static bool step_loop = false;
-std::atomic<bool> g_server_enabled(false);
+
+// If set to false, the server will never be started and no
+// gdbstub-related functions will be executed.
+static std::atomic<bool> server_enabled(false);
#ifdef _WIN32
WSADATA InitData;
@@ -181,11 +186,10 @@ static u8 NibbleToHex(u8 n) {
/**
* Converts input hex string characters into an array of equivalent of u8 bytes.
*
-* @param dest Pointer to buffer to store u8 bytes.
* @param src Pointer to array of output hex string characters.
* @param len Length of src array.
*/
-static u32 HexToInt(u8* src, u32 len) {
+static u32 HexToInt(const u8* src, size_t len) {
u32 output = 0;
while (len-- > 0) {
output = (output << 4) | HexCharToValue(src[0]);
@@ -201,7 +205,7 @@ static u32 HexToInt(u8* src, u32 len) {
* @param src Pointer to array of u8 bytes.
* @param len Length of src array.
*/
-static void MemToGdbHex(u8* dest, u8* src, u32 len) {
+static void MemToGdbHex(u8* dest, const u8* src, size_t len) {
while (len-- > 0) {
u8 tmp = *src++;
*dest++ = NibbleToHex(tmp >> 4);
@@ -216,7 +220,7 @@ static void MemToGdbHex(u8* dest, u8* src, u32 len) {
* @param src Pointer to array of output hex string characters.
* @param len Length of src array.
*/
-static void GdbHexToMem(u8* dest, u8* src, u32 len) {
+static void GdbHexToMem(u8* dest, const u8* src, size_t len) {
while (len-- > 0) {
*dest++ = (HexCharToValue(src[0]) << 4) | HexCharToValue(src[1]);
src += 2;
@@ -240,7 +244,7 @@ static void IntToGdbHex(u8* dest, u32 v) {
*
* @param src Pointer to hex string.
*/
-static u32 GdbHexToInt(u8* src) {
+static u32 GdbHexToInt(const u8* src) {
u32 output = 0;
for (int i = 0; i < 8; i += 2) {
@@ -264,7 +268,7 @@ static u8 ReadByte() {
}
/// Calculate the checksum of the current command buffer.
-static u8 CalculateChecksum(u8* buffer, u32 length) {
+static u8 CalculateChecksum(const u8* buffer, size_t length) {
return static_cast<u8>(std::accumulate(buffer, buffer + length, 0, std::plus<u8>()));
}
@@ -446,9 +450,9 @@ static void SendSignal(u32 signal) {
latest_signal = signal;
- 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)));
+ std::string buffer =
+ Common::StringFromFormat("T%02x%02x:%08x;%02x:%08x;", latest_signal, 15,
+ htonl(Core::CPU().GetPC()), 13, htonl(Core::CPU().GetReg(13)));
LOG_DEBUG(Debug_GDBStub, "Response: %s", buffer.c_str());
SendReply(buffer.c_str());
}
@@ -535,15 +539,15 @@ static void ReadRegister() {
}
if (id <= R15_REGISTER) {
- IntToGdbHex(reply, Core::g_app_core->GetReg(id));
+ IntToGdbHex(reply, Core::CPU().GetReg(id));
} else if (id == CPSR_REGISTER) {
- IntToGdbHex(reply, Core::g_app_core->GetCPSR());
+ IntToGdbHex(reply, Core::CPU().GetCPSR());
} else if (id > CPSR_REGISTER && id < FPSCR_REGISTER) {
- IntToGdbHex(reply, Core::g_app_core->GetVFPReg(
+ IntToGdbHex(reply, Core::CPU().GetVFPReg(
id - CPSR_REGISTER -
1)); // VFP registers should start at 26, so one after CSPR_REGISTER
} else if (id == FPSCR_REGISTER) {
- IntToGdbHex(reply, Core::g_app_core->GetVFPSystemReg(VFP_FPSCR)); // Get FPSCR
+ IntToGdbHex(reply, Core::CPU().GetVFPSystemReg(VFP_FPSCR)); // Get FPSCR
IntToGdbHex(reply + 8, 0);
} else {
return SendReply("E01");
@@ -560,29 +564,29 @@ static void ReadRegisters() {
u8* bufptr = buffer;
for (int reg = 0; reg <= R15_REGISTER; reg++) {
- IntToGdbHex(bufptr + reg * CHAR_BIT, Core::g_app_core->GetReg(reg));
+ IntToGdbHex(bufptr + reg * CHAR_BIT, Core::CPU().GetReg(reg));
}
bufptr += (16 * CHAR_BIT);
- IntToGdbHex(bufptr, Core::g_app_core->GetCPSR());
+ IntToGdbHex(bufptr, Core::CPU().GetCPSR());
bufptr += CHAR_BIT;
for (int reg = 0; reg <= 31; reg++) {
- IntToGdbHex(bufptr + reg * CHAR_BIT, Core::g_app_core->GetVFPReg(reg));
+ IntToGdbHex(bufptr + reg * CHAR_BIT, Core::CPU().GetVFPReg(reg));
}
bufptr += (32 * CHAR_BIT);
- IntToGdbHex(bufptr, Core::g_app_core->GetVFPSystemReg(VFP_FPSCR));
+ IntToGdbHex(bufptr, Core::CPU().GetVFPSystemReg(VFP_FPSCR));
SendReply(reinterpret_cast<char*>(buffer));
}
/// Modify data of register specified by gdb client.
static void WriteRegister() {
- u8* buffer_ptr = command_buffer + 3;
+ const u8* buffer_ptr = command_buffer + 3;
u32 id = HexCharToValue(command_buffer[1]);
if (command_buffer[2] != '=') {
@@ -592,13 +596,13 @@ static void WriteRegister() {
}
if (id <= R15_REGISTER) {
- Core::g_app_core->SetReg(id, GdbHexToInt(buffer_ptr));
+ Core::CPU().SetReg(id, GdbHexToInt(buffer_ptr));
} else if (id == CPSR_REGISTER) {
- Core::g_app_core->SetCPSR(GdbHexToInt(buffer_ptr));
+ Core::CPU().SetCPSR(GdbHexToInt(buffer_ptr));
} else if (id > CPSR_REGISTER && id < FPSCR_REGISTER) {
- Core::g_app_core->SetVFPReg(id - CPSR_REGISTER - 1, GdbHexToInt(buffer_ptr));
+ Core::CPU().SetVFPReg(id - CPSR_REGISTER - 1, GdbHexToInt(buffer_ptr));
} else if (id == FPSCR_REGISTER) {
- Core::g_app_core->SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr));
+ Core::CPU().SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr));
} else {
return SendReply("E01");
}
@@ -608,27 +612,26 @@ static void WriteRegister() {
/// Modify all registers with data received from the client.
static void WriteRegisters() {
- u8* buffer_ptr = command_buffer + 1;
+ const u8* buffer_ptr = command_buffer + 1;
if (command_buffer[0] != 'G')
return SendReply("E01");
for (int i = 0, reg = 0; reg <= FPSCR_REGISTER; i++, reg++) {
if (reg <= R15_REGISTER) {
- Core::g_app_core->SetReg(reg, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+ Core::CPU().SetReg(reg, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
} else if (reg == CPSR_REGISTER) {
- Core::g_app_core->SetCPSR(GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+ Core::CPU().SetCPSR(GdbHexToInt(buffer_ptr + i * CHAR_BIT));
} else if (reg == CPSR_REGISTER - 1) {
// Dummy FPA register, ignore
} else if (reg < CPSR_REGISTER) {
// Dummy FPA registers, ignore
i += 2;
} else if (reg > CPSR_REGISTER && reg < FPSCR_REGISTER) {
- Core::g_app_core->SetVFPReg(reg - CPSR_REGISTER - 1,
- GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+ Core::CPU().SetVFPReg(reg - CPSR_REGISTER - 1, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
i++; // Skip padding
} else if (reg == FPSCR_REGISTER) {
- Core::g_app_core->SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+ Core::CPU().SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
}
}
@@ -653,7 +656,7 @@ static void ReadMemory() {
SendReply("E01");
}
- u8* data = Memory::GetPointer(addr);
+ const u8* data = Memory::GetPointer(addr);
if (!data) {
return SendReply("E00");
}
@@ -902,10 +905,10 @@ void SetServerPort(u16 port) {
void ToggleServer(bool status) {
if (status) {
- g_server_enabled = status;
+ server_enabled = status;
// Start server
- if (!IsConnected() && Core::g_sys_core != nullptr) {
+ if (!IsConnected() && Core::System().GetInstance().IsPoweredOn()) {
Init();
}
} else {
@@ -914,12 +917,12 @@ void ToggleServer(bool status) {
Shutdown();
}
- g_server_enabled = status;
+ server_enabled = status;
}
}
static void Init(u16 port) {
- if (!g_server_enabled) {
+ if (!server_enabled) {
// Set the halt loop to false in case the user enabled the gdbstub mid-execution.
// This way the CPU can still execute normally.
halt_loop = false;
@@ -998,7 +1001,7 @@ void Init() {
}
void Shutdown() {
- if (!g_server_enabled) {
+ if (!server_enabled) {
return;
}
@@ -1015,8 +1018,12 @@ void Shutdown() {
LOG_INFO(Debug_GDBStub, "GDB stopped.");
}
+bool IsServerEnabled() {
+ return server_enabled;
+}
+
bool IsConnected() {
- return g_server_enabled && gdbserver_socket != -1;
+ return IsServerEnabled() && gdbserver_socket != -1;
}
bool GetCpuHaltFlag() {
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-07 23:56:19 +0000