diff options
| author | Ian Moffett <ian@osmora.org> | 2024-03-17 20:59:31 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-03-17 20:59:31 -0400 |
| commit | 0776264c266e7c1619b8b8b84d2da5384979bb3c (patch) | |
| tree | 80b6ded012336e24c72cc2c16e4c3ce952b7b739 /lib/libc/linker/entry.S | |
| parent | 7895aaff402a021a1b04645ca8d251f760e5662e (diff) | |
| parent | 2896f4126de2ee0fd1bab4b960bfb2213c359f18 (diff) | |
Merge branch 'user' into dev
Diffstat (limited to 'lib/libc/linker/entry.S')
| -rw-r--r-- | lib/libc/linker/entry.S | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/libc/linker/entry.S b/lib/libc/linker/entry.S new file mode 100644 index 0000000..1f982f9 --- /dev/null +++ b/lib/libc/linker/entry.S @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#if !defined(__hyra__) +#error "Hyra supported only" +#endif + +#include <sys/syscall.h> + +.section .text, "ax", @progbits +.globl _start +_start: + // Mark end of callstack + xor %rbp, %rbp + + // Load process context as per the sysv AMD64 ABI + lea (%rsp), %rdi + call entry + + // We are done, now we exit + mov $SYS_exit, %rax + xor %rdi, %rdi + int $0x80 + nop + ud2 |