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https://github.com/EnderIce2/Fennix.git
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59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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This file is part of Fennix C Library.
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Fennix C Library is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix C Library. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifdef FENNIX_DYNAMIC_LOADER
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__attribute__((naked, used, no_stack_protector)) void _dl_start()
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{
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#if defined(__amd64__)
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__asm__(
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"xorq %rbp, %rbp\n" /* Clear rbp */
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"push %rdi\n"
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"push %rsi\n"
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"push %rdx\n"
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"push %rcx\n"
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"push %r8\n"
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"push %r9\n"
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"call __init_print_buffer\n" /* Call __init_print_buffer */
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"call _dl_preload\n" /* Call _dl_preload */
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"movl %eax, %edi\n" /* Move return value to edi */
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"cmp $0, %edi\n" /* Check if return value is 0 */
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"jne _exit\n" /* If not, jump to _exit */
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"pop %r9\n"
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"pop %r8\n"
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"pop %rcx\n"
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"pop %rdx\n"
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"pop %rsi\n"
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"pop %rdi\n"
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"call main\n" /* Call _dl_main */
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"movl %eax, %edi\n" /* Move return value to edi */
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"call _exit\n"); /* Call _exit */
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#elif defined(__i386__)
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#warning "i386 _start not implemented"
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#elif defined(__arm__)
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#warning "arm _start not implemented"
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#elif defined(__aarch64__)
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#warning "aarch64 _start not implemented"
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#else
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#error "Unsupported architecture"
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#endif
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}
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#endif
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