mirror of
https://github.com/EnderIce2/Fennix.git
synced 2025-05-25 22:14:34 +00:00
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
|
|
This file is part of Fennix C Library.
|
|
|
|
Fennix C Library is free software: you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation, either version 3 of
|
|
the License, or (at your option) any later version.
|
|
|
|
Fennix C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifdef FENNIX_DYNAMIC_LOADER
|
|
#define _s __asm__ __volatile__
|
|
__attribute__((naked, used, no_stack_protector)) void _dl_start()
|
|
{
|
|
#if defined(__amd64__)
|
|
_s("xorq %rbp, %rbp\n"); /* Clear rbp */
|
|
|
|
_s("pushq %rdi\n");
|
|
_s("pushq %rsi\n");
|
|
_s("pushq %rdx\n");
|
|
_s("pushq %rcx\n");
|
|
_s("pushq %r8\n");
|
|
_s("pushq %r9\n");
|
|
|
|
_s("call __init_print_buffer\n"); /* Call __init_print_buffer */
|
|
_s("call _dl_preload\n"); /* Call _dl_preload */
|
|
_s("movl %eax, %edi\n"); /* Move return value to edi */
|
|
_s("cmp $0, %edi\n"); /* Check if return value is 0 */
|
|
_s("jne _exit\n"); /* If not, jump to _exit */
|
|
|
|
_s("popq %r9\n");
|
|
_s("popq %r8\n");
|
|
_s("popq %rcx\n");
|
|
_s("popq %rdx\n");
|
|
_s("popq %rsi\n");
|
|
_s("popq %rdi\n");
|
|
|
|
_s("call main\n"); /* Call _dl_main */
|
|
_s("movl %eax, %edi\n"); /* Move return value to edi */
|
|
_s("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
|
|
}
|
|
#undef _s
|
|
#endif
|