From 5fcbfc06eb247c0a4c1db201ac9050d80d4e4020 Mon Sep 17 00:00:00 2001 From: Kevin Hartman Date: Sun, 25 Jan 2015 22:56:17 -0800 Subject: Scheduler refactor Pt. 1 * Simplifies scheduling logic, specifically regarding thread status. It should be much clearer which statuses are valid for a thread at any given point in the system. * Removes dead code from thread.cpp. * Moves the implementation of resetting a ThreadContext to the corresponding core's implementation. Other changes: * Fixed comments in arm interfaces. * Updated comments in thread.cpp * Removed confusing, useless, functions like MakeReady() and ChangeStatus() from thread.cpp. * Removed stack_size from Thread. In the CTR kernel, the thread's stack would be allocated before thread creation. --- src/core/arm/dyncom/arm_dyncom.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'src/core/arm/dyncom/arm_dyncom.cpp') 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)); -- cgit v1.2.3