libc-top-half/musl/arch/mips/syscall_arch.h

   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) 0, __SYSCALL_LL_E((x))
   5
   6 #define SYSCALL_RLIM_INFINITY (-1UL/2)
   7
   8 #if __mips_isa_rev >= 6
   9 #define SYSCALL_CLOBBERLIST \
  10         "$1", "$3", "$11", "$12", "$13", \
  11         "$14", "$15", "$24", "$25", "memory"
  12 #else
  13 #define SYSCALL_CLOBBERLIST \
  14         "$1", "$3", "$11", "$12", "$13", \
  15         "$14", "$15", "$24", "$25", "hi", "lo", "memory"
  16 #endif
  17
  18 static inline long __syscall0(long n)
  19 {
  20         register long r7 __asm__("$7");
  21         register long r2 __asm__("$2") = n;
  22         __asm__ __volatile__ (
  23                 "syscall"
  24                 : "+r"(r2), "=r"(r7)
  25                 :
  26                 : SYSCALL_CLOBBERLIST, "$8", "$9", "$10");
  27         return r7 ? -r2 : r2;
  28 }
  29
  30 static inline long __syscall1(long n, long a)
  31 {
  32         register long r4 __asm__("$4") = a;
  33         register long r7 __asm__("$7");
  34         register long r2 __asm__("$2") = n;
  35         __asm__ __volatile__ (
  36                 "syscall"
  37                 : "+r"(r2), "=r"(r7)
  38                 : "r"(r4)
  39                 : SYSCALL_CLOBBERLIST, "$8", "$9", "$10");
  40         return r7 ? -r2 : r2;
  41 }
  42
  43 static inline long __syscall2(long n, long a, long b)
  44 {
  45         register long r4 __asm__("$4") = a;
  46         register long r5 __asm__("$5") = b;
  47         register long r7 __asm__("$7");
  48         register long r2 __asm__("$2") = n;
  49         __asm__ __volatile__ (
  50                 "syscall"
  51                 : "+r"(r2), "=r"(r7)
  52                 : "r"(r4), "r"(r5)
  53                 : SYSCALL_CLOBBERLIST, "$8", "$9", "$10");
  54         return r7 ? -r2 : r2;
  55 }
  56
  57 static inline long __syscall3(long n, long a, long b, long c)
  58 {
  59         register long r4 __asm__("$4") = a;
  60         register long r5 __asm__("$5") = b;
  61         register long r6 __asm__("$6") = c;
  62         register long r7 __asm__("$7");
  63         register long r2 __asm__("$2") = n;
  64         __asm__ __volatile__ (
  65                 "syscall"
  66                 : "+r"(r2), "=r"(r7)
  67                 : "r"(r4), "r"(r5), "r"(r6)
  68                 : SYSCALL_CLOBBERLIST, "$8", "$9", "$10");
  69         return r7 ? -r2 : r2;
  70 }
  71
  72 static inline long __syscall4(long n, long a, long b, long c, long d)
  73 {
  74         register long r4 __asm__("$4") = a;
  75         register long r5 __asm__("$5") = b;
  76         register long r6 __asm__("$6") = c;
  77         register long r7 __asm__("$7") = d;
  78         register long r2 __asm__("$2") = n;
  79         __asm__ __volatile__ (
  80                 "syscall"
  81                 : "+r"(r2), "+r"(r7)
  82                 : "r"(r4), "r"(r5), "r"(r6)
  83                 : SYSCALL_CLOBBERLIST, "$8", "$9", "$10");
  84         return r7 ? -r2 : r2;
  85 }
  86
  87 static inline long __syscall5(long n, long a, long b, long c, long d, long e)
  88 {
  89         register long r4 __asm__("$4") = a;
  90         register long r5 __asm__("$5") = b;
  91         register long r6 __asm__("$6") = c;
  92         register long r7 __asm__("$7") = d;
  93         register long r8 __asm__("$8") = e;
  94         register long r2 __asm__("$2") = n;
  95         __asm__ __volatile__ (
  96                 "subu $sp,$sp,32 ; sw $8,16($sp) ; "
  97                 "syscall ;"
  98                 "addu $sp,$sp,32"
  99                 : "+r"(r2), "+r"(r7), "+r"(r8)
 100                 : "r"(r4), "r"(r5), "r"(r6)
 101                 : SYSCALL_CLOBBERLIST, "$9", "$10");
 102         return r7 ? -r2 : r2;
 103 }
 104
 105 static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
 106 {
 107         register long r4 __asm__("$4") = a;
 108         register long r5 __asm__("$5") = b;
 109         register long r6 __asm__("$6") = c;
 110         register long r7 __asm__("$7") = d;
 111         register long r8 __asm__("$8") = e;
 112         register long r9 __asm__("$9") = f;
 113         register long r2 __asm__("$2") = n;
 114         __asm__ __volatile__ (
 115                 "subu $sp,$sp,32 ; sw $8,16($sp) ; sw $9,20($sp) ; "
 116                 "syscall ;"
 117                 "addu $sp,$sp,32"
 118                 : "+r"(r2), "+r"(r7), "+r"(r8), "+r"(r9)
 119                 : "r"(r4), "r"(r5), "r"(r6)
 120                 : SYSCALL_CLOBBERLIST, "$10");
 121         return r7 ? -r2 : r2;
 122 }
 123
 124 static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
 125 {
 126         register long r4 __asm__("$4") = a;
 127         register long r5 __asm__("$5") = b;
 128         register long r6 __asm__("$6") = c;
 129         register long r7 __asm__("$7") = d;
 130         register long r8 __asm__("$8") = e;
 131         register long r9 __asm__("$9") = f;
 132         register long r10 __asm__("$10") = g;
 133         register long r2 __asm__("$2") = n;
 134         __asm__ __volatile__ (
 135                 "subu $sp,$sp,32 ; sw $8,16($sp) ; sw $9,20($sp) ; sw $10,24($sp) ; "
 136                 "syscall ;"
 137                 "addu $sp,$sp,32"
 138                 : "+r"(r2), "+r"(r7), "+r"(r8), "+r"(r9), "+r"(r10)
 139                 : "r"(r4), "r"(r5), "r"(r6)
 140                 : SYSCALL_CLOBBERLIST);
 141         return r7 ? -r2 : r2;
 142 }
 143
 144 #define VDSO_USEFUL
 145 #define VDSO_CGT_SYM "__vdso_clock_gettime"
 146 #define VDSO_CGT_VER "LINUX_2.6"
 147
 148 #define SO_SNDTIMEO_OLD 0x1005
 149 #define SO_RCVTIMEO_OLD 0x1006