banan-os/kernel/include/kernel/Arch.h

20 lines
679 B
C

#pragma once
#define x86_64 1
#define i386 2
#define ARCH(arch) (__arch == arch)
#if !defined(__arch) || (__arch != x86_64 && __arch != i386)
#error "Unsupported architecture"
#endif
#if ARCH(x86_64)
#define read_rsp(rsp) asm volatile("movq %%rsp, %0" : "=r"(rsp))
#define push_callee_saved() asm volatile("pushq %rbx; pushq %rbp; pushq %r12; pushq %r13; pushq %r14; pushq %r15")
#define pop_callee_saved() asm volatile("popq %r15; popq %r14; popq %r13; popq %r12; popq %rbp; popq %rbx")
#else
#define read_rsp(rsp) asm volatile("movl %%esp, %0" : "=r"(rsp))
#define push_callee_saved() asm volatile("pushal")
#define pop_callee_saved() asm volatile("popal")
#endif