2 * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
3 * Licensed under the GPL
6 #ifndef __SYSDEP_STUB_H
7 #define __SYSDEP_STUB_H
9 #include <asm/ptrace.h>
11 #define STUB_SYSCALL_RET EAX
12 #define STUB_MMAP_NR __NR_mmap2
13 #define MMAP_OFFSET(o) ((o) >> UM_KERN_PAGE_SHIFT)
15 static inline long stub_syscall0(long syscall)
19 __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall));
24 static inline long stub_syscall1(long syscall, long arg1)
28 __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1));
33 static inline long stub_syscall2(long syscall, long arg1, long arg2)
37 __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
43 static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3)
47 __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
48 "c" (arg2), "d" (arg3));
53 static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3,
58 __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
59 "c" (arg2), "d" (arg3), "S" (arg4));
64 static inline long stub_syscall5(long syscall, long arg1, long arg2, long arg3,
69 __asm__ volatile ("int $0x80" : "=a" (ret) : "0" (syscall), "b" (arg1),
70 "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5));
75 static inline void trap_myself(void)
80 static inline void remap_stack(int fd, unsigned long offset)
82 __asm__ volatile ("movl %%eax,%%ebp ; movl %0,%%eax ; int $0x80 ;"
83 "movl %7, %%ebx ; movl %%eax, (%%ebx)"
84 : : "g" (STUB_MMAP_NR), "b" (STUB_DATA),
85 "c" (UM_KERN_PAGE_SIZE),
86 "d" (PROT_READ | PROT_WRITE),
87 "S" (MAP_FIXED | MAP_SHARED), "D" (fd),
89 "i" (&((struct stub_data *) STUB_DATA)->err)