mirror of
git://git.musl-libc.org/musl
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ccc7b4c3a1
the issue at hand is that many syscalls require as an argument the kernel-ABI size of sigset_t, intended to allow the kernel to switch to a larger sigset_t in the future. previously, each arch was defining this size in syscall_arch.h, which was redundant with the definition of _NSIG in bits/signal.h. as it's used in some not-quite-portable application code as well, _NSIG is much more likely to be recognized and understood immediately by someone reading the code, and it's also shorter and less cluttered. note that _NSIG is actually 65/129, not 64/128, but the division takes care of throwing away the off-by-one part.
60 lines
1.4 KiB
C
60 lines
1.4 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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static inline long __syscall0(long n)
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{
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return (__syscall)(n, 0, 0, 0, 0, 0, 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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return (__syscall)(n, a, 0, 0, 0, 0, 0);
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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, 0, 0, 0, 0);
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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, 0, 0, 0);
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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, 0, 0);
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}
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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, 0);
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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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#define __SC_socket 1
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#define __SC_bind 2
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#define __SC_connect 3
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#define __SC_listen 4
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#define __SC_accept 5
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#define __SC_getsockname 6
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#define __SC_getpeername 7
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#define __SC_socketpair 8
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#define __SC_send 9
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#define __SC_recv 10
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#define __SC_sendto 11
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#define __SC_recvfrom 12
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#define __SC_shutdown 13
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#define __SC_setsockopt 14
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#define __SC_getsockopt 15
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#define __SC_sendmsg 16
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#define __SC_recvmsg 17
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