arch/mipsn32/syscall_arch.h

   1 #define __SYSCALL_LL_E(x) (x)
   2 #define __SYSCALL_LL_O(x) (x)
   3
   4 __attribute__((visibility("hidden")))
   5 long (__syscall)(long, ...);
   6
   7 #define SYSCALL_RLIM_INFINITY (-1UL/2)
   8
   9 #if _MIPSEL || __MIPSEL || __MIPSEL__
  10 #define __stat_fix(st) ((st),(void)0)
  11 #else
  12 #include <sys/stat.h>
  13 static inline void __stat_fix(long p)
  14 {
  15         struct stat *st = (struct stat *)p;
  16         st->st_dev >>= 32;
  17         st->st_rdev >>= 32;
  18 }
  19 #endif
  20
  21 static inline long __syscall0(long n)
  22 {
  23         register long r7 __asm__("$7");
  24         register long r2 __asm__("$2");
  25         __asm__ __volatile__ (
  26                 "addu $2,$0,%2 ; syscall"
  27                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7)
  28                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  29                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  30         return r7 ? -r2 : r2;
  31 }
  32
  33 static inline long __syscall1(long n, long a)
  34 {
  35         register long r4 __asm__("$4") = a;
  36         register long r7 __asm__("$7");
  37         register long r2 __asm__("$2");
  38         __asm__ __volatile__ (
  39                 "addu $2,$0,%2 ; syscall"
  40                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  41                   "r"(r4)
  42                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  43                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  44         return r7 ? -r2 : r2;
  45 }
  46
  47 static inline long __syscall2(long n, long a, long b)
  48 {
  49         register long r4 __asm__("$4") = a;
  50         register long r5 __asm__("$5") = b;
  51         register long r7 __asm__("$7");
  52         register long r2 __asm__("$2");
  53         __asm__ __volatile__ (
  54                 "addu $2,$0,%2 ; syscall"
  55                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  56                   "r"(r4), "r"(r5)
  57                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  58                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  59         if (r7) return -r2;
  60         long ret = r2;
  61         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
  62         return ret;
  63 }
  64
  65 static inline long __syscall3(long n, long a, long b, long c)
  66 {
  67         register long r4 __asm__("$4") = a;
  68         register long r5 __asm__("$5") = b;
  69         register long r6 __asm__("$6") = c;
  70         register long r7 __asm__("$7");
  71         register long r2 __asm__("$2");
  72         __asm__ __volatile__ (
  73                 "addu $2,$0,%2 ; syscall"
  74                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  75                   "r"(r4), "r"(r5), "r"(r6)
  76                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  77                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  78         if (r7) return -r2;
  79         long ret = r2;
  80         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
  81         return ret;
  82 }
  83
  84 static inline long __syscall4(long n, long a, long b, long c, long d)
  85 {
  86         register long r4 __asm__("$4") = a;
  87         register long r5 __asm__("$5") = b;
  88         register long r6 __asm__("$6") = c;
  89         register long r7 __asm__("$7") = d;
  90         register long r2 __asm__("$2");
  91         __asm__ __volatile__ (
  92                 "addu $2,$0,%2 ; syscall"
  93                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  94                   "r"(r4), "r"(r5), "r"(r6)
  95                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  96                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  97         if (r7) return -r2;
  98         long ret = r2;
  99         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 100         if (n == SYS_fstatat) __stat_fix(c);
 101         return ret;
 102 }
 103
 104 static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 105 {
 106         long r2 = (__syscall)(n, a, b, c, d, e);
 107         if (r2 > -4096UL) return r2;
 108         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 109         if (n == SYS_fstatat) __stat_fix(c);
 110         return r2;
 111 }
 112
 113 static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
 114 {
 115         long r2 = (__syscall)(n, a, b, c, d, e, f);
 116         if (r2 > -4096UL) return r2;
 117         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 118         if (n == SYS_fstatat) __stat_fix(c);
 119         return r2;
 120 }
 121
 122 #define VDSO_USEFUL
 123 #define VDSO_CGT_SYM "__vdso_clock_gettime"
 124 #define VDSO_CGT_VER "LINUX_2.6"