mirror of git://git.musl-libc.org/musl
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
#define __SYSCALL_LL_E(x) \
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((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
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((union { long long ll; long l[2]; }){ .ll = x }).l[1]
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#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
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long (__syscall)(long, ...);
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#define SYSCALL_RLIM_INFINITY (-1UL/2)
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#ifndef __clang__
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#define __asm_syscall(...) do { \
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register long r2 __asm__("$2"); \
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__asm__ __volatile__ ( \
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"addu $2,$0,%2 ; syscall" \
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: "=&r"(r2), "=r"(r7) : "ir"(n), __VA_ARGS__, "0"(r2), "1"(r7) \
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: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", \
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"$14", "$15", "$24", "$25", "hi", "lo", "memory"); \
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return r7 ? -r2 : r2; \
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} while (0)
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static inline long __syscall0(long n)
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{
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register long r7 __asm__("$7");
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__asm_syscall("i"(0));
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}
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static inline long __syscall1(long n, long a)
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{
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register long r4 __asm__("$4") = a;
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register long r7 __asm__("$7");
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__asm_syscall("r"(r4));
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}
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static inline long __syscall2(long n, long a, long b)
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{
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register long r4 __asm__("$4") = a;
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register long r5 __asm__("$5") = b;
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register long r7 __asm__("$7");
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__asm_syscall("r"(r4), "r"(r5));
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}
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static inline long __syscall3(long n, long a, long b, long c)
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{
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register long r4 __asm__("$4") = a;
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register long r5 __asm__("$5") = b;
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register long r6 __asm__("$6") = c;
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register long r7 __asm__("$7");
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__asm_syscall("r"(r4), "r"(r5), "r"(r6));
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}
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static inline long __syscall4(long n, long a, long b, long c, long d)
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{
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register long r4 __asm__("$4") = a;
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register long r5 __asm__("$5") = b;
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register long r6 __asm__("$6") = c;
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register long r7 __asm__("$7") = d;
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__asm_syscall("r"(r4), "r"(r5), "r"(r6));
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}
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#else
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static inline long __syscall0(long n)
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{
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return (__syscall)(n);
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}
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static inline long __syscall1(long n, long a)
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{
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return (__syscall)(n, a);
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}
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static inline long __syscall2(long n, long a, long b)
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{
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return (__syscall)(n, a, b);
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}
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static inline long __syscall3(long n, long a, long b, long c)
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{
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return (__syscall)(n, a, b, c);
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}
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static inline long __syscall4(long n, long a, long b, long c, long d)
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{
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return (__syscall)(n, a, b, c, d);
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}
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#endif
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static inline long __syscall5(long n, long a, long b, long c, long d, long e)
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{
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return (__syscall)(n, a, b, c, d, e);
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}
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static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
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{
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return (__syscall)(n, a, b, c, d, e, f);
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}
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