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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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aeaaf005da
Several of the x86 selftests end up with executable stacks because the asm was missing the annotation that says that they are modern and don't need executable stacks. Add the annotations. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/6f043c03e9e0e4557e1e975a63b07a4d18965a68.1604346596.git.luto@kernel.org
49 lines
942 B
ArmAsm
49 lines
942 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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.global sys32_helper
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sys32_helper:
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/* Args: syscall_args_32*, function pointer */
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pushl %ebp
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pushl %ebx
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pushl %esi
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pushl %edi
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movl 5*4(%esp), %eax /* pointer to args struct */
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movl 1*4(%eax), %ebx
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movl 2*4(%eax), %ecx
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movl 3*4(%eax), %edx
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movl 4*4(%eax), %esi
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movl 5*4(%eax), %edi
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movl 6*4(%eax), %ebp
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movl 0*4(%eax), %eax
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call *(6*4)(%esp) /* Do the syscall */
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/* Now we need to recover without losing any reg values */
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pushl %eax
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movl 6*4(%esp), %eax
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popl 0*4(%eax)
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movl %ebx, 1*4(%eax)
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movl %ecx, 2*4(%eax)
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movl %edx, 3*4(%eax)
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movl %esi, 4*4(%eax)
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movl %edi, 5*4(%eax)
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movl %ebp, 6*4(%eax)
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popl %edi
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popl %esi
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popl %ebx
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popl %ebp
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ret
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.type sys32_helper, @function
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.size sys32_helper, .-sys32_helper
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.global int80_and_ret
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int80_and_ret:
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int $0x80
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ret
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.type int80_and_ret, @function
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.size int80_and_ret, .-int80_and_ret
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.section .note.GNU-stack,"",%progbits
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