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-rw-r--r--src/core/arm/arm_interface.h6
-rw-r--r--src/core/arm/dyncom/arm_dyncom.cpp49
-rw-r--r--src/core/arm/dyncom/arm_dyncom.h14
-rw-r--r--src/core/arm/interpreter/arm_interpreter.cpp51
-rw-r--r--src/core/arm/interpreter/arm_interpreter.h6
-rw-r--r--src/core/hle/hle.cpp8
-rw-r--r--src/core/hw/gpu.cpp42
7 files changed, 59 insertions, 117 deletions
diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
index c59355339..3b7209418 100644
--- a/src/core/arm/arm_interface.h
+++ b/src/core/arm/arm_interface.h
@@ -78,6 +78,12 @@ public:
virtual u64 GetTicks() const = 0;
/**
+ * Advance the CPU core by the specified number of ticks (e.g. to simulate CPU execution time)
+ * @param ticks Number of ticks to advance the CPU core
+ */
+ virtual void AddTicks(u64 ticks) = 0;
+
+ /**
* Saves the current CPU context
* @param ctx Thread context to save
*/
diff --git a/src/core/arm/dyncom/arm_dyncom.cpp b/src/core/arm/dyncom/arm_dyncom.cpp
index 6d4fb1b48..a838fd25a 100644
--- a/src/core/arm/dyncom/arm_dyncom.cpp
+++ b/src/core/arm/dyncom/arm_dyncom.cpp
@@ -47,68 +47,38 @@ ARM_DynCom::ARM_DynCom() : ticks(0) {
ARM_DynCom::~ARM_DynCom() {
}
-/**
- * Set the Program Counter to an address
- * @param addr Address to set PC to
- */
void ARM_DynCom::SetPC(u32 pc) {
state->pc = state->Reg[15] = pc;
}
-/*
- * Get the current Program Counter
- * @return Returns current PC
- */
u32 ARM_DynCom::GetPC() const {
return state->Reg[15];
}
-/**
- * Get an ARM register
- * @param index Register index (0-15)
- * @return Returns the value in the register
- */
u32 ARM_DynCom::GetReg(int index) const {
return state->Reg[index];
}
-/**
- * Set an ARM register
- * @param index Register index (0-15)
- * @param value Value to set register to
- */
void ARM_DynCom::SetReg(int index, u32 value) {
state->Reg[index] = value;
}
-/**
- * Get the current CPSR register
- * @return Returns the value of the CPSR register
- */
u32 ARM_DynCom::GetCPSR() const {
return state->Cpsr;
}
-/**
- * Set the current CPSR register
- * @param cpsr Value to set CPSR to
- */
void ARM_DynCom::SetCPSR(u32 cpsr) {
state->Cpsr = cpsr;
}
-/**
- * Returns the number of clock ticks since the last reset
- * @return Returns number of clock ticks
- */
u64 ARM_DynCom::GetTicks() const {
return ticks;
}
-/**
- * Executes the given number of instructions
- * @param num_instructions Number of instructions to executes
- */
+void ARM_DynCom::AddTicks(u64 ticks) {
+ this->ticks += ticks;
+}
+
void ARM_DynCom::ExecuteInstructions(int num_instructions) {
state->NumInstrsToExecute = num_instructions;
@@ -118,11 +88,6 @@ void ARM_DynCom::ExecuteInstructions(int num_instructions) {
ticks += InterpreterMainLoop(state.get());
}
-/**
- * Saves the current CPU context
- * @param ctx Thread context to save
- * @todo Do we need to save Reg[15] and NextInstr?
- */
void ARM_DynCom::SaveContext(ThreadContext& ctx) {
memcpy(ctx.cpu_registers, state->Reg, sizeof(ctx.cpu_registers));
memcpy(ctx.fpu_registers, state->ExtReg, sizeof(ctx.fpu_registers));
@@ -139,11 +104,6 @@ void ARM_DynCom::SaveContext(ThreadContext& ctx) {
ctx.mode = state->NextInstr;
}
-/**
- * Loads a CPU context
- * @param ctx Thread context to load
- * @param Do we need to load Reg[15] and NextInstr?
- */
void ARM_DynCom::LoadContext(const ThreadContext& ctx) {
memcpy(state->Reg, ctx.cpu_registers, sizeof(ctx.cpu_registers));
memcpy(state->ExtReg, ctx.fpu_registers, sizeof(ctx.fpu_registers));
@@ -160,7 +120,6 @@ void ARM_DynCom::LoadContext(const ThreadContext& ctx) {
state->NextInstr = ctx.mode;
}
-/// Prepare core for thread reschedule (if needed to correctly handle state)
void ARM_DynCom::PrepareReschedule() {
state->NumInstrsToExecute = 0;
}
diff --git a/src/core/arm/dyncom/arm_dyncom.h b/src/core/arm/dyncom/arm_dyncom.h
index 6fa2a0ba7..7284dcd07 100644
--- a/src/core/arm/dyncom/arm_dyncom.h
+++ b/src/core/arm/dyncom/arm_dyncom.h
@@ -27,14 +27,14 @@ public:
* Get the current Program Counter
* @return Returns current PC
*/
- u32 GetPC() const;
+ u32 GetPC() const override;
/**
* Get an ARM register
* @param index Register index (0-15)
* @return Returns the value in the register
*/
- u32 GetReg(int index) const;
+ u32 GetReg(int index) const override;
/**
* Set an ARM register
@@ -47,7 +47,7 @@ public:
* Get the current CPSR register
* @return Returns the value of the CPSR register
*/
- u32 GetCPSR() const;
+ u32 GetCPSR() const override;
/**
* Set the current CPSR register
@@ -59,7 +59,13 @@ public:
* Returns the number of clock ticks since the last reset
* @return Returns number of clock ticks
*/
- u64 GetTicks() const;
+ u64 GetTicks() const override;
+
+ /**
+ * Advance the CPU core by the specified number of ticks (e.g. to simulate CPU execution time)
+ * @param ticks Number of ticks to advance the CPU core
+ */
+ void AddTicks(u64 ticks) override;
/**
* Saves the current CPU context
diff --git a/src/core/arm/interpreter/arm_interpreter.cpp b/src/core/arm/interpreter/arm_interpreter.cpp
index be04fc1a1..80ebc359e 100644
--- a/src/core/arm/interpreter/arm_interpreter.cpp
+++ b/src/core/arm/interpreter/arm_interpreter.cpp
@@ -38,78 +38,43 @@ ARM_Interpreter::~ARM_Interpreter() {
delete state;
}
-/**
- * Set the Program Counter to an address
- * @param addr Address to set PC to
- */
void ARM_Interpreter::SetPC(u32 pc) {
state->pc = state->Reg[15] = pc;
}
-/*
- * Get the current Program Counter
- * @return Returns current PC
- */
u32 ARM_Interpreter::GetPC() const {
return state->pc;
}
-/**
- * Get an ARM register
- * @param index Register index (0-15)
- * @return Returns the value in the register
- */
u32 ARM_Interpreter::GetReg(int index) const {
return state->Reg[index];
}
-/**
- * Set an ARM register
- * @param index Register index (0-15)
- * @param value Value to set register to
- */
void ARM_Interpreter::SetReg(int index, u32 value) {
state->Reg[index] = value;
}
-/**
- * Get the current CPSR register
- * @return Returns the value of the CPSR register
- */
u32 ARM_Interpreter::GetCPSR() const {
return state->Cpsr;
}
-/**
- * Set the current CPSR register
- * @param cpsr Value to set CPSR to
- */
void ARM_Interpreter::SetCPSR(u32 cpsr) {
state->Cpsr = cpsr;
}
-/**
- * Returns the number of clock ticks since the last reset
- * @return Returns number of clock ticks
- */
u64 ARM_Interpreter::GetTicks() const {
- return ARMul_Time(state);
+ return state->NumInstrs;
+}
+
+void ARM_Interpreter::AddTicks(u64 ticks) {
+ state->NumInstrs += ticks;
}
-/**
- * Executes the given number of instructions
- * @param num_instructions Number of instructions to executes
- */
void ARM_Interpreter::ExecuteInstructions(int num_instructions) {
state->NumInstrsToExecute = num_instructions - 1;
ARMul_Emulate32(state);
}
-/**
- * Saves the current CPU context
- * @param ctx Thread context to save
- * @todo Do we need to save Reg[15] and NextInstr?
- */
void ARM_Interpreter::SaveContext(ThreadContext& ctx) {
memcpy(ctx.cpu_registers, state->Reg, sizeof(ctx.cpu_registers));
memcpy(ctx.fpu_registers, state->ExtReg, sizeof(ctx.fpu_registers));
@@ -126,11 +91,6 @@ void ARM_Interpreter::SaveContext(ThreadContext& ctx) {
ctx.mode = state->NextInstr;
}
-/**
- * Loads a CPU context
- * @param ctx Thread context to load
- * @param Do we need to load Reg[15] and NextInstr?
- */
void ARM_Interpreter::LoadContext(const ThreadContext& ctx) {
memcpy(state->Reg, ctx.cpu_registers, sizeof(ctx.cpu_registers));
memcpy(state->ExtReg, ctx.fpu_registers, sizeof(ctx.fpu_registers));
@@ -147,7 +107,6 @@ void ARM_Interpreter::LoadContext(const ThreadContext& ctx) {
state->NextInstr = ctx.mode;
}
-/// Prepare core for thread reschedule (if needed to correctly handle state)
void ARM_Interpreter::PrepareReschedule() {
state->NumInstrsToExecute = 0;
}
diff --git a/src/core/arm/interpreter/arm_interpreter.h b/src/core/arm/interpreter/arm_interpreter.h
index b685215a0..019dad5df 100644
--- a/src/core/arm/interpreter/arm_interpreter.h
+++ b/src/core/arm/interpreter/arm_interpreter.h
@@ -61,6 +61,12 @@ public:
u64 GetTicks() const override;
/**
+ * Advance the CPU core by the specified number of ticks (e.g. to simulate CPU execution time)
+ * @param ticks Number of ticks to advance the CPU core
+ */
+ void AddTicks(u64 ticks) override;
+
+ /**
* Saves the current CPU context
* @param ctx Thread context to save
*/
diff --git a/src/core/hle/hle.cpp b/src/core/hle/hle.cpp
index 2d314a4cf..33ac12507 100644
--- a/src/core/hle/hle.cpp
+++ b/src/core/hle/hle.cpp
@@ -43,7 +43,15 @@ void CallSVC(u32 opcode) {
void Reschedule(const char *reason) {
_dbg_assert_msg_(Kernel, reason != 0 && strlen(reason) < 256, "Reschedule: Invalid or too long reason.");
+
+ // TODO(bunnei): It seems that games depend on some CPU execution time elapsing during HLE
+ // routines. This simulates that time by artificially advancing the number of CPU "ticks".
+ // The value was chosen empirically, it seems to work well enough for everything tested, but
+ // is likely not ideal. We should find a more accurate way to simulate timing with HLE.
+ Core::g_app_core->AddTicks(4000);
+
Core::g_app_core->PrepareReschedule();
+
g_reschedule = true;
}
diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp
index 67a8bc324..7e70b34c1 100644
--- a/src/core/hw/gpu.cpp
+++ b/src/core/hw/gpu.cpp
@@ -21,12 +21,10 @@ namespace GPU {
Regs g_regs;
-u32 g_cur_line = 0; ///< Current vertical screen line
-u64 g_last_line_ticks = 0; ///< CPU tick count from last vertical screen line
-u64 g_last_frame_ticks = 0; ///< CPU tick count from last frame
-
-static u32 kFrameCycles = 0; ///< 268MHz / 60 frames per second
-static u32 kFrameTicks = 0; ///< Approximate number of instructions/frame
+static u64 frame_ticks = 0; ///< 268MHz / 60 frames per second
+static u32 cur_line = 0; ///< Current vertical screen line
+static u64 last_frame_ticks = 0; ///< CPU tick count from last frame
+static u64 last_update_tick = 0; ///< CPU ticl count from last GPU update
template <typename T>
inline void Read(T &var, const u32 raw_addr) {
@@ -34,7 +32,7 @@ inline void Read(T &var, const u32 raw_addr) {
u32 index = addr / 4;
// Reads other than u32 are untested, so I'd rather have them abort than silently fail
- if (index >= Regs::NumIds() || !std::is_same<T,u32>::value) {
+ if (index >= Regs::NumIds() || !std::is_same<T, u32>::value) {
LOG_ERROR(HW_GPU, "unknown Read%lu @ 0x%08X", sizeof(var) * 8, addr);
return;
}
@@ -48,7 +46,7 @@ inline void Write(u32 addr, const T data) {
u32 index = addr / 4;
// Writes other than u32 are untested, so I'd rather have them abort than silently fail
- if (index >= Regs::NumIds() || !std::is_same<T,u32>::value) {
+ if (index >= Regs::NumIds() || !std::is_same<T, u32>::value) {
LOG_ERROR(HW_GPU, "unknown Write%lu 0x%08X @ 0x%08X", sizeof(data) * 8, (u32)data, addr);
return;
}
@@ -179,7 +177,6 @@ template void Write<u8>(u32 addr, const u8 data);
/// Update hardware
void Update() {
auto& framebuffer_top = g_regs.framebuffer_config[0];
- u64 current_ticks = Core::g_app_core->GetTicks();
// Update the frame after a certain number of CPU ticks have elapsed. This assumes that the
// active frame in memory is always complete to render. There also may be issues with this
@@ -189,9 +186,9 @@ void Update() {
// primitive homebrew relies on a vertical blank interrupt to happen inevitably (regardless of a
// threading reschedule).
- if ((current_ticks - g_last_frame_ticks) > GPU::kFrameTicks) {
+ if ((Core::g_app_core->GetTicks() - last_frame_ticks) > (GPU::frame_ticks)) {
VideoCore::g_renderer->SwapBuffers();
- g_last_frame_ticks = current_ticks;
+ last_frame_ticks = Core::g_app_core->GetTicks();
}
// Synchronize GPU on a thread reschedule: Because we cannot accurately predict a vertical
@@ -199,17 +196,20 @@ void Update() {
// accurately when this is signalled between thread switches.
if (HLE::g_reschedule) {
+ u64 current_ticks = Core::g_app_core->GetTicks();
+ u64 line_ticks = (GPU::frame_ticks / framebuffer_top.height) * 16;
- // Synchronize line...
- if ((current_ticks - g_last_line_ticks) >= GPU::kFrameTicks / framebuffer_top.height) {
+ //// Synchronize line...
+ if ((current_ticks - last_update_tick) >= line_ticks) {
GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::PDC0);
- g_cur_line++;
- g_last_line_ticks = current_ticks;
+ cur_line++;
+ last_update_tick += line_ticks;
}
// Synchronize frame...
- if (g_cur_line >= framebuffer_top.height) {
- g_cur_line = 0;
+ if (cur_line >= framebuffer_top.height) {
+ cur_line = 0;
+ VideoCore::g_renderer->SwapBuffers();
GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::PDC1);
}
}
@@ -217,11 +217,9 @@ void Update() {
/// Initialize hardware
void Init() {
- kFrameCycles = 268123480 / Settings::values.gpu_refresh_rate;
- kFrameTicks = kFrameCycles / 3;
-
- g_cur_line = 0;
- g_last_frame_ticks = g_last_line_ticks = Core::g_app_core->GetTicks();
+ frame_ticks = 268123480 / Settings::values.gpu_refresh_rate;
+ cur_line = 0;
+ last_update_tick = last_frame_ticks = Core::g_app_core->GetTicks();
auto& framebuffer_top = g_regs.framebuffer_config[0];
auto& framebuffer_sub = g_regs.framebuffer_config[1];
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 22:57:26 +0100