summaryrefslogtreecommitdiffstats
path: root/src/core/arm
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/core/arm/arm_interface.h9
-rw-r--r--src/core/arm/dyncom/arm_dyncom.cpp10
-rw-r--r--src/core/arm/dyncom/arm_dyncom.h57
3 files changed, 20 insertions, 56 deletions
diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
index e612f7439..ef37ee055 100644
--- a/src/core/arm/arm_interface.h
+++ b/src/core/arm/arm_interface.h
@@ -86,6 +86,15 @@ public:
virtual void AddTicks(u64 ticks) = 0;
/**
+ * Initializes a CPU context for use on this CPU
+ * @param context Thread context to reset
+ * @param stack_top Pointer to the top of the stack
+ * @param entry_point Entry point for execution
+ * @param arg User argument for thread
+ */
+ virtual void ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg) = 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 f6628ca33..68fddc94f 100644
--- a/src/core/arm/dyncom/arm_dyncom.cpp
+++ b/src/core/arm/dyncom/arm_dyncom.cpp
@@ -93,6 +93,16 @@ void ARM_DynCom::ExecuteInstructions(int num_instructions) {
AddTicks(ticks_executed);
}
+void ARM_DynCom::ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg) {
+ memset(&context, 0, sizeof(Core::ThreadContext));
+
+ context.cpu_registers[0] = arg;
+ context.pc = entry_point;
+ context.sp = stack_top;
+ context.cpsr = 0x1F; // Usermode
+ context.mode = 8; // Instructs dyncom CPU core to start execution as if it's "resuming" a thread.
+}
+
void ARM_DynCom::SaveContext(Core::ThreadContext& ctx) {
memcpy(ctx.cpu_registers, state->Reg, sizeof(ctx.cpu_registers));
memcpy(ctx.fpu_registers, state->ExtReg, sizeof(ctx.fpu_registers));
diff --git a/src/core/arm/dyncom/arm_dyncom.h b/src/core/arm/dyncom/arm_dyncom.h
index f16fb070c..9e2dda843 100644
--- a/src/core/arm/dyncom/arm_dyncom.h
+++ b/src/core/arm/dyncom/arm_dyncom.h
@@ -13,79 +13,24 @@
class ARM_DynCom final : virtual public ARM_Interface {
public:
-
ARM_DynCom();
~ARM_DynCom();
- /**
- * Set the Program Counter to an address
- * @param pc Address to set PC to
- */
void SetPC(u32 pc) override;
-
- /*
- * Get the current Program Counter
- * @return Returns current PC
- */
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 override;
-
- /**
- * Set an ARM register
- * @param index Register index (0-15)
- * @param value Value to set register to
- */
void SetReg(int index, u32 value) override;
-
- /**
- * Get the current CPSR register
- * @return Returns the value of the CPSR register
- */
u32 GetCPSR() const override;
-
- /**
- * Set the current CPSR register
- * @param cpsr Value to set CPSR to
- */
void SetCPSR(u32 cpsr) override;
- /**
- * Returns the number of clock ticks since the last reset
- * @return Returns number of clock ticks
- */
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
- */
+ void ResetContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point, u32 arg);
void SaveContext(Core::ThreadContext& ctx) override;
-
- /**
- * Loads a CPU context
- * @param ctx Thread context to load
- */
void LoadContext(const Core::ThreadContext& ctx) override;
- /// Prepare core for thread reschedule (if needed to correctly handle state)
void PrepareReschedule() override;
-
- /**
- * Executes the given number of instructions
- * @param num_instructions Number of instructions to executes
- */
void ExecuteInstructions(int num_instructions) override;
private: