syscall_arch.h raw

   1  #define __SYSCALL_LL_E(x) \
   2  ((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
   3  ((union { long long ll; long l[2]; }){ .ll = x }).l[1]
   4  #define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x))
   5  
   6  #if SYSCALL_NO_TLS
   7  #define SYSCALL_INSNS "int $128"
   8  #else
   9  #define SYSCALL_INSNS "call *%%gs:16"
  10  #endif
  11  
  12  #define SYSCALL_INSNS_12 "xchg %%ebx,%%edx ; " SYSCALL_INSNS " ; xchg %%ebx,%%edx"
  13  #define SYSCALL_INSNS_34 "xchg %%ebx,%%edi ; " SYSCALL_INSNS " ; xchg %%ebx,%%edi"
  14  
  15  static inline long __syscall0(long n)
  16  {
  17  	unsigned long __ret;
  18  	__asm__ __volatile__ (SYSCALL_INSNS : "=a"(__ret) : "a"(n) : "memory");
  19  	return __ret;
  20  }
  21  
  22  static inline long __syscall1(long n, long a1)
  23  {
  24  	unsigned long __ret;
  25  	__asm__ __volatile__ (SYSCALL_INSNS_12 : "=a"(__ret) : "a"(n), "d"(a1) : "memory");
  26  	return __ret;
  27  }
  28  
  29  static inline long __syscall2(long n, long a1, long a2)
  30  {
  31  	unsigned long __ret;
  32  	__asm__ __volatile__ (SYSCALL_INSNS_12 : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2) : "memory");
  33  	return __ret;
  34  }
  35  
  36  static inline long __syscall3(long n, long a1, long a2, long a3)
  37  {
  38  	unsigned long __ret;
  39  #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
  40  	__asm__ __volatile__ (SYSCALL_INSNS : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3) : "memory");
  41  #else
  42  	__asm__ __volatile__ (SYSCALL_INSNS_34 : "=a"(__ret) : "a"(n), "D"(a1), "c"(a2), "d"(a3) : "memory");
  43  #endif
  44  	return __ret;
  45  }
  46  
  47  static inline long __syscall4(long n, long a1, long a2, long a3, long a4)
  48  {
  49  	unsigned long __ret;
  50  #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
  51  	__asm__ __volatile__ (SYSCALL_INSNS : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory");
  52  #else
  53  	__asm__ __volatile__ (SYSCALL_INSNS_34 : "=a"(__ret) : "a"(n), "D"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory");
  54  #endif
  55  	return __ret;
  56  }
  57  
  58  static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5)
  59  {
  60  	unsigned long __ret;
  61  #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
  62  	__asm__ __volatile__ (SYSCALL_INSNS
  63  		: "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory");
  64  #else
  65  	__asm__ __volatile__ ("pushl %2 ; push %%ebx ; mov 4(%%esp),%%ebx ; " SYSCALL_INSNS " ; pop %%ebx ; add $4,%%esp"
  66  		: "=a"(__ret) : "a"(n), "g"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory");
  67  #endif
  68  	return __ret;
  69  }
  70  
  71  static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
  72  {
  73  	unsigned long __ret;
  74  #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
  75  	__asm__ __volatile__ ("pushl %7 ; push %%ebp ; mov 4(%%esp),%%ebp ; " SYSCALL_INSNS " ; pop %%ebp ; add $4,%%esp"
  76  		: "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5), "g"(a6) : "memory");
  77  #else
  78  	unsigned long a1a6[2] = { a1, a6 };
  79  	__asm__ __volatile__ ("pushl %1 ; push %%ebx ; push %%ebp ; mov 8(%%esp),%%ebx ; mov 4(%%ebx),%%ebp ; mov (%%ebx),%%ebx ; " SYSCALL_INSNS " ; pop %%ebp ; pop %%ebx ; add $4,%%esp"
  80  		: "=a"(__ret) : "g"(&a1a6), "a"(n), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory");
  81  #endif
  82  	return __ret;
  83  }
  84  
  85  #define VDSO_USEFUL
  86  #define VDSO_CGT32_SYM "__vdso_clock_gettime"
  87  #define VDSO_CGT32_VER "LINUX_2.6"
  88  #define VDSO_CGT_SYM "__vdso_clock_gettime64"
  89  #define VDSO_CGT_VER "LINUX_2.6"
  90