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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/x86/raw_syscall_helper_32.S | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/x86/raw_syscall_helper_32.S')
| -rw-r--r-- | tools/testing/selftests/x86/raw_syscall_helper_32.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tools/testing/selftests/x86/raw_syscall_helper_32.S b/tools/testing/selftests/x86/raw_syscall_helper_32.S new file mode 100644 index 000000000..a10d36afd --- /dev/null +++ b/tools/testing/selftests/x86/raw_syscall_helper_32.S @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +.global sys32_helper +sys32_helper: + /* Args: syscall_args_32*, function pointer */ + pushl %ebp + pushl %ebx + pushl %esi + pushl %edi + movl 5*4(%esp), %eax /* pointer to args struct */ + + movl 1*4(%eax), %ebx + movl 2*4(%eax), %ecx + movl 3*4(%eax), %edx + movl 4*4(%eax), %esi + movl 5*4(%eax), %edi + movl 6*4(%eax), %ebp + movl 0*4(%eax), %eax + + call *(6*4)(%esp) /* Do the syscall */ + + /* Now we need to recover without losing any reg values */ + pushl %eax + movl 6*4(%esp), %eax + popl 0*4(%eax) + movl %ebx, 1*4(%eax) + movl %ecx, 2*4(%eax) + movl %edx, 3*4(%eax) + movl %esi, 4*4(%eax) + movl %edi, 5*4(%eax) + movl %ebp, 6*4(%eax) + + popl %edi + popl %esi + popl %ebx + popl %ebp + ret + + .type sys32_helper, @function + .size sys32_helper, .-sys32_helper + +.global int80_and_ret +int80_and_ret: + int $0x80 + ret + + .type int80_and_ret, @function + .size int80_and_ret, .-int80_and_ret + +.section .note.GNU-stack,"",%progbits |