#include <socks/machine/thread.h>

struct thread_ctx {
	uint64_t r15, r14, r13, r12, r11, r10, r9, r8;
	uint64_t rdi, rsi, rbp, unused_rsp, rbx, rdx, rcx, rax;
	uint64_t rfl;
} __packed;

void prepare_stack(uintptr_t ip, uintptr_t *sp)
{
	(*sp) -= sizeof(uintptr_t);
	uintptr_t *dest_ip = (uintptr_t *)(*sp);
	*dest_ip = ip;

	(*sp) -= sizeof(struct thread_ctx);
	struct thread_ctx *ctx = (struct thread_ctx *)(*sp);
	memset(ctx, 0x0, sizeof *ctx);

	ctx->rfl = 0x202;
}