tests/test_patching_input.S - Issue 8596009: Add test for patching a system call instruction

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Side by Side Diff: tests/test_patching_input.S

Issue 8596009: Add test for patching a system call instruction (Closed) Base URL: https://seccompsandbox.googlecode.com/svn/trunk

Patch Set: Add comment Created 9 years, 1 month ago

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	1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.

	2 // Use of this source code is governed by a BSD-style license that can be

	3 // found in the LICENSE file.

	4

	5 #include <asm/unistd.h>

	6

	7

	8 // This performs a system call directly so that we can test

	9 // patching this instruction sequence.

	10

	11 .global my_getpid

	12 .global my_getpid_end

	13 my_getpid:

	14 mov $__NR_getpid, %eax

	15 #if defined(__x86_64__)

	16 syscall

	17 #elif defined(__i386__)

	18 int $0x80

	19 #else

	20 # error Unsupported target platform

	21 #endif

	22 ret

	23 my_getpid_end:

	24

	25 // Tell Linux not to disable no-execute protection for the process.

	26 .section .note.GNU-stack,"",@progbits

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