#pragma once
#include <assert.h>
#include <string.h>
#if __cplusplus
extern "C" {
#endif
#define COROUTINE __declspec(noreturn) void
const size_t COROUTINE_REGISTERS = 8;
const size_t COROUTINE_XMM_REGISTERS = 1+10*2;
typedef struct
{
void **stack_pointer;
} coroutine_context;
typedef void(* coroutine_start)(coroutine_context *from, coroutine_context *self);
void coroutine_trampoline();
static inline void coroutine_initialize(
coroutine_context *context,
coroutine_start start,
void *stack_pointer,
size_t stack_size
) {
context->stack_pointer = (void**)((uintptr_t)stack_pointer & ~0xF);
if (!start) {
assert(!context->stack_pointer);
return;
}
context->stack_pointer -= 4;
*--context->stack_pointer = 0;
*--context->stack_pointer = (void*)start;
*--context->stack_pointer = (void*)coroutine_trampoline;
*--context->stack_pointer = (void*)stack_pointer;
*--context->stack_pointer = (void*)((char *)stack_pointer - stack_size);
context->stack_pointer -= COROUTINE_REGISTERS;
memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
memset(context->stack_pointer - COROUTINE_XMM_REGISTERS, 0, sizeof(void*) * COROUTINE_XMM_REGISTERS);
}
coroutine_context * coroutine_transfer(coroutine_context * current, coroutine_context * target);
static inline void coroutine_destroy(coroutine_context * context)
{
}
#if __cplusplus
}
#endif