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s390/string: get rid of register asm 

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-06-21 11:30:30 +02:00 committed by Vasily Gorbik
parent 79ee201e26
commit 8f45db5555
1 changed files with 35 additions and 24 deletions
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59
arch/s390/include/asm/string.h
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@ -107,16 +107,18 @@ static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
#ifdef __HAVE_ARCH_MEMCHR
static inline void *memchr(const void * s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
const void *ret = s + n;
asm volatile(
"0: srst %0,%1\n"
" lgr 0,%[c]\n"
"0: srst %[ret],%[s]\n"
" jo 0b\n"
" jl 1f\n"
" la %0,0\n"
" la %[ret],0\n"
"1:"
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
: [ret] "+&a" (ret), [s] "+&a" (s)
: [c] "d" (c)
: "cc", "memory", "0");
return (void *) ret;
}
#endif
@ -124,13 +126,15 @@ static inline void *memchr(const void * s, int c, size_t n)
#ifdef __HAVE_ARCH_MEMSCAN
static inline void *memscan(void *s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
const void *ret = s + n;
asm volatile(
"0: srst %0,%1\n"
" lgr 0,%[c]\n"
"0: srst %[ret],%[s]\n"
" jo 0b\n"
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
: [ret] "+&a" (ret), [s] "+&a" (s)
: [c] "d" (c)
: "cc", "memory", "0");
return (void *) ret;
}
#endif
@ -138,17 +142,18 @@ static inline void *memscan(void *s, int c, size_t n)
#ifdef __HAVE_ARCH_STRCAT
static inline char *strcat(char *dst, const char *src)
{
register int r0 asm("0") = 0;
unsigned long dummy;
unsigned long dummy = 0;
char *ret = dst;
asm volatile(
"0: srst %0,%1\n"
" lghi 0,0\n"
"0: srst %[dummy],%[dst]\n"
" jo 0b\n"
"1: mvst %0,%2\n"
"1: mvst %[dummy],%[src]\n"
" jo 1b"
: "=&a" (dummy), "+a" (dst), "+a" (src)
: "d" (r0), "0" (0) : "cc", "memory" );
: [dummy] "+&a" (dummy), [dst] "+&a" (dst), [src] "+&a" (src)
:
: "cc", "memory", "0");
return ret;
}
#endif
@ -156,14 +161,15 @@ static inline char *strcat(char *dst, const char *src)
#ifdef __HAVE_ARCH_STRCPY
static inline char *strcpy(char *dst, const char *src)
{
register int r0 asm("0") = 0;
char *ret = dst;
asm volatile(
"0: mvst %0,%1\n"
" lghi 0,0\n"
"0: mvst %[dst],%[src]\n"
" jo 0b"
: "+&a" (dst), "+&a" (src) : "d" (r0)
: "cc", "memory");
: [dst] "+&a" (dst), [src] "+&a" (src)
:
: "cc", "memory", "0");
return ret;
}
#endif
@ -171,28 +177,33 @@ static inline char *strcpy(char *dst, const char *src)
#if defined(__HAVE_ARCH_STRLEN) || (defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__))
static inline size_t __no_sanitize_prefix_strfunc(strlen)(const char *s)
{
register unsigned long r0 asm("0") = 0;
unsigned long end = 0;
const char *tmp = s;
asm volatile(
"0: srst %0,%1\n"
" lghi 0,0\n"
"0: srst %[end],%[tmp]\n"
" jo 0b"
: "+d" (r0), "+a" (tmp) : : "cc", "memory");
return r0 - (unsigned long) s;
: [end] "+&a" (end), [tmp] "+&a" (tmp)
:
: "cc", "memory", "0");
return end - (unsigned long)s;
}
#endif
#ifdef __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char * s, size_t n)
{
register int r0 asm("0") = 0;
const char *tmp = s;
const char *end = s + n;
asm volatile(
"0: srst %0,%1\n"
" lghi 0,0\n"
"0: srst %[end],%[tmp]\n"
" jo 0b"
: "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory");
: [end] "+&a" (end), [tmp] "+&a" (tmp)
:
: "cc", "memory", "0");
return end - s;
}
#endif