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Update userspace

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This commit is contained in:
Alex
2023-06-10 13:10:56 +03:00
parent ed5faa7b55
commit 22e75b9540
63 changed files with 2362 additions and 2151 deletions
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21
libc/runtime/crt0.c Normal file
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// https://wiki.osdev.org/Creating_a_C_Library
#define asm __asm__ __volatile__
__attribute__((naked, used, no_stack_protector, section(".text"))) void _start()
{
asm("movq $0, %rbp\n");
asm("pushq %rbp\n");
asm("pushq %rbp\n");
asm("movq %rsp, %rbp\n");
asm("pushq %rcx\n"
"pushq %rdx\n"
"pushq %rsi\n"
"pushq %rdi\n");
asm("call __libc_init\n");
asm("popq %rdi\n"
"popq %rsi\n"
"popq %rdx\n"
"popq %rcx\n");
asm("call main\n");
asm("movl %eax, %edi\n");
asm("call _exit\n");
}