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 #ifndef __clang__
  22
  23 static inline long __syscall0(long n)
  24 {
  25         register long r7 __asm__("$7");
  26         register long r2 __asm__("$2");
  27         __asm__ __volatile__ (
  28                 "addu $2,$0,%2 ; syscall"
  29                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7)
  30                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  31                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  32         return r7 ? -r2 : r2;
  33 }
  34
  35 static inline long __syscall1(long n, long a)
  36 {
  37         register long r4 __asm__("$4") = a;
  38         register long r7 __asm__("$7");
  39         register long r2 __asm__("$2");
  40         __asm__ __volatile__ (
  41                 "addu $2,$0,%2 ; syscall"
  42                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  43                   "r"(r4)
  44                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  45                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  46         return r7 ? -r2 : r2;
  47 }
  48
  49 static inline long __syscall2(long n, long a, long b)
  50 {
  51         register long r4 __asm__("$4") = a;
  52         register long r5 __asm__("$5") = b;
  53         register long r7 __asm__("$7");
  54         register long r2 __asm__("$2");
  55         __asm__ __volatile__ (
  56                 "addu $2,$0,%2 ; syscall"
  57                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  58                   "r"(r4), "r"(r5)
  59                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  60                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  61         if (r7) return -r2;
  62         long ret = r2;
  63         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
  64         return ret;
  65 }
  66
  67 static inline long __syscall3(long n, long a, long b, long c)
  68 {
  69         register long r4 __asm__("$4") = a;
  70         register long r5 __asm__("$5") = b;
  71         register long r6 __asm__("$6") = c;
  72         register long r7 __asm__("$7");
  73         register long r2 __asm__("$2");
  74         __asm__ __volatile__ (
  75                 "addu $2,$0,%2 ; syscall"
  76                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  77                   "r"(r4), "r"(r5), "r"(r6)
  78                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  79                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  80         if (r7) return -r2;
  81         long ret = r2;
  82         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
  83         return ret;
  84 }
  85
  86 static inline long __syscall4(long n, long a, long b, long c, long d)
  87 {
  88         register long r4 __asm__("$4") = a;
  89         register long r5 __asm__("$5") = b;
  90         register long r6 __asm__("$6") = c;
  91         register long r7 __asm__("$7") = d;
  92         register long r2 __asm__("$2");
  93         __asm__ __volatile__ (
  94                 "addu $2,$0,%2 ; syscall"
  95                 : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
  96                   "r"(r4), "r"(r5), "r"(r6)
  97                 : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
  98                   "$14", "$15", "$24", "$25", "hi", "lo", "memory");
  99         if (r7) return -r2;
 100         long ret = r2;
 101         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 102         if (n == SYS_fstatat) __stat_fix(c);
 103         return ret;
 104 }
 105
 106 #else
 107
 108 static inline long __syscall0(long n)
 109 {
 110         return (__syscall)(n);
 111 }
 112
 113 static inline long __syscall1(long n, long a)
 114 {
 115         return (__syscall)(n, a);
 116 }
 117
 118 static inline long __syscall2(long n, long a, long b)
 119 {
 120         long r2 = (__syscall)(n, a, b);
 121         if (r2 > -4096UL) return r2;
 122         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 123         return r2;
 124 }
 125
 126 static inline long __syscall3(long n, long a, long b, long c)
 127 {
 128         long r2 = (__syscall)(n, a, b, c);
 129         if (r2 > -4096UL) return r2;
 130         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 131         return r2;
 132 }
 133
 134 static inline long __syscall4(long n, long a, long b, long c, long d)
 135 {
 136         long r2 = (__syscall)(n, a, b, c, d);
 137         if (r2 > -4096UL) return r2;
 138         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 139         if (n == SYS_fstatat) __stat_fix(c);
 140         return r2;
 141 }
 142
 143 #endif
 144
 145 static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 146 {
 147         long r2 = (__syscall)(n, a, b, c, d, e);
 148         if (r2 > -4096UL) return r2;
 149         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 150         if (n == SYS_fstatat) __stat_fix(c);
 151         return r2;
 152 }
 153
 154 static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
 155 {
 156         long r2 = (__syscall)(n, a, b, c, d, e, f);
 157         if (r2 > -4096UL) return r2;
 158         if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
 159         if (n == SYS_fstatat) __stat_fix(c);
 160         return r2;
 161 }
 162
 163 #define VDSO_USEFUL
 164 #define VDSO_CGT_SYM "__vdso_clock_gettime"
 165 #define VDSO_CGT_VER "LINUX_2.6"