mirror of
git://git.musl-libc.org/musl
synced 2024-12-15 11:15:07 +00:00
1312930f9b
due to what was essentially a copy and paste error, the changes made
in commit f61be1f875 caused syscalls
with 5 or 6 arguments (and syscalls with 2, 3, or 4 arguments when
compiled with clang compatibility) to negate the returned error code a
second time, breaking errno reporting.
160 lines
4.4 KiB
C
160 lines
4.4 KiB
C
#define __SYSCALL_LL_E(x) \
|
|
((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
|
|
((union { long long ll; long l[2]; }){ .ll = x }).l[1]
|
|
#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
|
|
|
|
long (__syscall)(long, ...);
|
|
|
|
#define SYSCALL_RLIM_INFINITY (-1UL/2)
|
|
|
|
#if _MIPSEL || __MIPSEL || __MIPSEL__
|
|
#define __stat_fix(st) ((st),(void)0)
|
|
#else
|
|
#include <sys/stat.h>
|
|
static inline void __stat_fix(long p)
|
|
{
|
|
struct stat *st = (struct stat *)p;
|
|
st->st_dev >>= 32;
|
|
st->st_rdev >>= 32;
|
|
}
|
|
#endif
|
|
|
|
#ifndef __clang__
|
|
|
|
static inline long __syscall0(long n)
|
|
{
|
|
register long r7 __asm__("$7");
|
|
register long r2 __asm__("$2");
|
|
__asm__ __volatile__ (
|
|
"addu $2,$0,%2 ; syscall"
|
|
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7)
|
|
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
|
|
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
|
|
return r7 ? -r2 : r2;
|
|
}
|
|
|
|
static inline long __syscall1(long n, long a)
|
|
{
|
|
register long r4 __asm__("$4") = a;
|
|
register long r7 __asm__("$7");
|
|
register long r2 __asm__("$2");
|
|
__asm__ __volatile__ (
|
|
"addu $2,$0,%2 ; syscall"
|
|
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
|
|
"r"(r4)
|
|
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
|
|
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
|
|
return r7 ? -r2 : r2;
|
|
}
|
|
|
|
static inline long __syscall2(long n, long a, long b)
|
|
{
|
|
register long r4 __asm__("$4") = a;
|
|
register long r5 __asm__("$5") = b;
|
|
register long r7 __asm__("$7");
|
|
register long r2 __asm__("$2");
|
|
__asm__ __volatile__ (
|
|
"addu $2,$0,%2 ; syscall"
|
|
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
|
|
"r"(r4), "r"(r5)
|
|
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
|
|
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
|
|
if (r7) return -r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
return r2;
|
|
}
|
|
|
|
static inline long __syscall3(long n, long a, long b, long c)
|
|
{
|
|
register long r4 __asm__("$4") = a;
|
|
register long r5 __asm__("$5") = b;
|
|
register long r6 __asm__("$6") = c;
|
|
register long r7 __asm__("$7");
|
|
register long r2 __asm__("$2");
|
|
__asm__ __volatile__ (
|
|
"addu $2,$0,%2 ; syscall"
|
|
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
|
|
"r"(r4), "r"(r5), "r"(r6)
|
|
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
|
|
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
|
|
if (r7) return -r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
return r2;
|
|
}
|
|
|
|
static inline long __syscall4(long n, long a, long b, long c, long d)
|
|
{
|
|
register long r4 __asm__("$4") = a;
|
|
register long r5 __asm__("$5") = b;
|
|
register long r6 __asm__("$6") = c;
|
|
register long r7 __asm__("$7") = d;
|
|
register long r2 __asm__("$2");
|
|
__asm__ __volatile__ (
|
|
"addu $2,$0,%2 ; syscall"
|
|
: "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
|
|
"r"(r4), "r"(r5), "r"(r6)
|
|
: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
|
|
"$14", "$15", "$24", "$25", "hi", "lo", "memory");
|
|
if (r7) return -r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
if (n == SYS_fstatat) __stat_fix(c);
|
|
return r2;
|
|
}
|
|
|
|
#else
|
|
|
|
static inline long __syscall0(long n)
|
|
{
|
|
return (__syscall)(n);
|
|
}
|
|
|
|
static inline long __syscall1(long n, long a)
|
|
{
|
|
return (__syscall)(n, a);
|
|
}
|
|
|
|
static inline long __syscall2(long n, long a, long b)
|
|
{
|
|
long r2 = (__syscall)(n, a, b);
|
|
if (r2 > -4096UL) return r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
return r2;
|
|
}
|
|
|
|
static inline long __syscall3(long n, long a, long b, long c)
|
|
{
|
|
long r2 = (__syscall)(n, a, b, c);
|
|
if (r2 > -4096UL) return r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
return r2;
|
|
}
|
|
|
|
static inline long __syscall4(long n, long a, long b, long c, long d)
|
|
{
|
|
long r2 = (__syscall)(n, a, b, c, d);
|
|
if (r2 > -4096UL) return r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
if (n == SYS_fstatat) __stat_fix(c);
|
|
return r2;
|
|
}
|
|
|
|
#endif
|
|
|
|
static inline long __syscall5(long n, long a, long b, long c, long d, long e)
|
|
{
|
|
long r2 = (__syscall)(n, a, b, c, d, e);
|
|
if (r2 > -4096UL) return r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
if (n == SYS_fstatat) __stat_fix(c);
|
|
return r2;
|
|
}
|
|
|
|
static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
|
|
{
|
|
long r2 = (__syscall)(n, a, b, c, d, e, f);
|
|
if (r2 > -4096UL) return r2;
|
|
if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b);
|
|
if (n == SYS_fstatat) __stat_fix(c);
|
|
return r2;
|
|
}
|