mirror of
git://git.musl-libc.org/musl
synced 2025-01-22 22:53:42 +00:00
9b95fd0944
this cleans up what had become widespread direct inline use of "GNU C"
style attributes directly in the source, and lowers the barrier to
increased use of hidden visibility, which will be useful to recovering
some of the efficiency lost when the protected visibility hack was
dropped in commit dc2f368e56, especially
on archs where the PLT ABI is costly.
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
#define __SYSCALL_LL_E(x) (x)
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#define __SYSCALL_LL_O(x) (x)
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hidden long (__syscall)(long, ...);
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#define SYSCALL_RLIM_INFINITY (-1UL/2)
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#if _MIPSEL || __MIPSEL || __MIPSEL__
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#define __stat_fix(st) ((st),(void)0)
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#else
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#include <sys/stat.h>
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static inline void __stat_fix(long p)
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{
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struct stat *st = (struct stat *)p;
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st->st_dev >>= 32;
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st->st_rdev >>= 32;
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}
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#endif
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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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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), "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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}
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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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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), "0"(r2), "1"(r7),
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"r"(r4)
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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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}
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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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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), "0"(r2), "1"(r7),
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"r"(r4), "r"(r5)
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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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if (r7) return -r2;
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long ret = r2;
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if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
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return ret;
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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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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), "0"(r2), "1"(r7),
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"r"(r4), "r"(r5), "r"(r6)
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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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if (r7) return -r2;
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long ret = r2;
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if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
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return ret;
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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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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), "0"(r2), "1"(r7),
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"r"(r4), "r"(r5), "r"(r6)
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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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if (r7) return -r2;
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long ret = r2;
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if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
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if (n == SYS_newfstatat) __stat_fix(c);
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return ret;
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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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long r2 = (__syscall)(n, a, b, c, d, e);
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if (r2 > -4096UL) return r2;
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if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
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if (n == SYS_newfstatat) __stat_fix(c);
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return r2;
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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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long r2 = (__syscall)(n, a, b, c, d, e, f);
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if (r2 > -4096UL) return r2;
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if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b);
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if (n == SYS_newfstatat) __stat_fix(c);
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return r2;
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}
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#define VDSO_USEFUL
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#define VDSO_CGT_SYM "__vdso_clock_gettime"
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#define VDSO_CGT_VER "LINUX_2.6"
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