RepoMirrors
/
musl
mirror of git://git.musl-libc.org/musl
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

use inline syscalls for powerpc (32-bit) 

the inline syscall code is copied directly from powerpc64. the extent
of register clobber specifiers may be excessive on both; if that turns
out to be the case it can be fixed later.
This commit is contained in:
Rich Felker 2019-04-10 18:34:38 -04:00
parent f76d51a1cc
commit 6aeb9c6703
1 changed files with 84 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
arch/powerpc/syscall_arch.h
View File

@ -3,7 +3,89 @@
((union { long long ll; long l[2]; }){ .ll = x }).l[1]
#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))
#undef SYSCALL_NO_INLINE
#define SYSCALL_NO_INLINE
static inline long __syscall0(long n)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3");
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "=r"(r3)
:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
return r3;
}
static inline long __syscall1(long n, long a)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3") = a;
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "+r"(r3)
:: "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
return r3;
}
static inline long __syscall2(long n, long a, long b)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3") = a;
register long r4 __asm__("r4") = b;
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "+r"(r3), "+r"(r4)
:: "memory", "cr0", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
return r3;
}
static inline long __syscall3(long n, long a, long b, long c)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3") = a;
register long r4 __asm__("r4") = b;
register long r5 __asm__("r5") = c;
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5)
:: "memory", "cr0", "r6", "r7", "r8", "r9", "r10", "r11", "r12");
return r3;
}
static inline long __syscall4(long n, long a, long b, long c, long d)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3") = a;
register long r4 __asm__("r4") = b;
register long r5 __asm__("r5") = c;
register long r6 __asm__("r6") = d;
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6)
:: "memory", "cr0", "r7", "r8", "r9", "r10", "r11", "r12");
return r3;
}
static inline long __syscall5(long n, long a, long b, long c, long d, long e)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3") = a;
register long r4 __asm__("r4") = b;
register long r5 __asm__("r5") = c;
register long r6 __asm__("r6") = d;
register long r7 __asm__("r7") = e;
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6), "+r"(r7)
:: "memory", "cr0", "r8", "r9", "r10", "r11", "r12");
return r3;
}
static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
{
register long r0 __asm__("r0") = n;
register long r3 __asm__("r3") = a;
register long r4 __asm__("r4") = b;
register long r5 __asm__("r5") = c;
register long r6 __asm__("r6") = d;
register long r7 __asm__("r7") = e;
register long r8 __asm__("r8") = f;
__asm__ __volatile__("sc ; bns+ 1f ; neg %1, %1 ; 1:"
: "+r"(r0), "+r"(r3), "+r"(r4), "+r"(r5), "+r"(r6), "+r"(r7), "+r"(r8)
:: "memory", "cr0", "r9", "r10", "r11", "r12");
return r3;
}
#define SYSCALL_FADVISE_6_ARG