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refactor(userspace): build using cmake

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Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2
2025-03-15 23:05:17 +00:00
parent 40f46312f8
commit 201ace7eec
73 changed files with 2819 additions and 2255 deletions
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49
Userspace/libc/interpreter/start.c
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@ -15,7 +15,7 @@
along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
*/
#include <fennix/syscalls.h>
#include <bits/libc.h>
// const char __interp[] __attribute__((section(".interp"))) = "/boot/fennix.elf";
@ -97,54 +97,11 @@ const struct
void __init_print_buffer();
void __fini_print_buffer();
__attribute__((naked, used, no_stack_protector)) void _start()
{
#if defined(__amd64__)
__asm__(
"xorq %rbp, %rbp\n" /* Clear rbp */
"push %rdi\n"
"push %rsi\n"
"push %rdx\n"
"push %rcx\n"
"push %r8\n"
"push %r9\n"
"call __init_print_buffer\n" /* Call __init_print_buffer */
"call _dl_preload\n" /* Call _dl_preload */
"movl %eax, %edi\n" /* Move return value to edi */
"cmp $0, %edi\n" /* Check if return value is 0 */
"jne _exit\n" /* If not, jump to _exit */
"pop %r9\n"
"pop %r8\n"
"pop %rcx\n"
"pop %rdx\n"
"pop %rsi\n"
"pop %rdi\n"
"call main\n" /* Call _dl_main */
"movl %eax, %edi\n" /* Move return value to edi */
"call _exit\n"); /* Call _exit */
#elif defined(__i386__)
#warning "i386 _start not implemented"
#elif defined(__arm__)
#warning "arm _start not implemented"
#elif defined(__aarch64__)
#warning "aarch64 _start not implemented"
#else
#error "Unsupported architecture"
#endif
}
__attribute__((no_stack_protector)) _Noreturn void _exit(int status)
{
__fini_print_buffer();
call_exit(status);
/* At this point, the program *SHOULD* have exited. */
#if defined(__amd64__) || defined(__i386__)
__asm__("ud2\n");
#endif
sysdep(Exit)(status);
/* At this point, the program *SHOULD* have exited. */
__builtin_unreachable();
}