mirror of
https://github.com/fluencelabs/musl
synced 2025-05-21 03:31:29 +00:00
fb247fafa0
while musl itself requires a c99 compiler, some applications insist on being compiled with c89 compilers, and use of "inline" in the headers was breaking them. much of this had been avoided already by just skipping the inline keyword in pre-c99 compilers or modes, but this new unified solution is cleaner and may/should result in better code generation in the default gcc configuration.
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#ifndef _SYS_SYSCALL_H
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#define _SYS_SYSCALL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
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#define __inline inline
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#endif
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long __syscall_ret(unsigned long);
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long __syscall(long, ...);
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long syscall(long, ...);
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#include <bits/syscall.h>
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#define __syscall1(n,a) __syscall1(n,(long)(a))
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#define __syscall2(n,a,b) __syscall2(n,(long)(a),(long)(b))
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#define __syscall3(n,a,b,c) __syscall3(n,(long)(a),(long)(b),(long)(c))
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#define __syscall4(n,a,b,c,d) __syscall4(n,(long)(a),(long)(b),(long)(c),(long)(d))
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#define __syscall5(n,a,b,c,d,e) __syscall5(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e))
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#define __syscall6(n,a,b,c,d,e,f) __syscall6(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),(long)(f))
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#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,n,...) n
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#define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,6,5,4,3,2,1,0)
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#define __SYSCALL_CONCAT_X(a,b) a##b
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#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b)
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#define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
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#define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__)
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#define syscall(...) __syscall_ret(__syscall(__VA_ARGS__))
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#ifdef __cplusplus
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}
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#endif
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#endif
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