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[POWERPC] Move bootwrapper's strchr() and strncmp() from .h to string.S

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Currently the bootwrapper has implementations of strchr() and
strncmp(), but they're inlines in flatdevtree_env.h, rather than in
string.S with all the rest of the string functions.  This moves
them to string.S.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
David Gibson 2007-08-28 14:52:57 +10:00 committed by Paul Mackerras
parent 768cc2d3b2
commit 0ae0b54565
3 changed files with 26 additions and 20 deletions
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20
arch/powerpc/boot/flatdevtree_env.h
View file

@ -24,24 +24,4 @@
#define be64_to_cpu(x) (x)
#define cpu_to_be64(x) (x)
static inline int strncmp(const char *cs, const char *ct, size_t count)
{
signed char __res = 0;
while (count) {
if ((__res = *cs - *ct++) != 0 || !*cs++)
break;
count--;
}
return __res;
}
static inline char *strchr(const char *s, int c)
{
for (; *s != (char)c; ++s)
if (*s == '\0')
return NULL;
return (char *)s;
}
#endif /* _PPC_BOOT_FLATDEVTREE_ENV_H_ */

24
arch/powerpc/boot/string.S
View file

@ -49,6 +49,17 @@ strcat:
bne 1b
blr
.globl strchr
strchr:
addi r3,r3,-1
1: lbzu r0,1(r3)
cmpw 0,r0,r4
beqlr
cmpwi 0,r0,0
bne 1b
li r3,0
blr
.globl strcmp
strcmp:
addi r5,r3,-1
@ -61,6 +72,19 @@ strcmp:
beq 1b
blr
.globl strncmp
strncmp:
mtctr r5
addi r5,r3,-1
addi r4,r4,-1
1: lbzu r3,1(r5)
cmpwi 1,r3,0
lbzu r0,1(r4)
subf. r3,r0,r3
beqlr 1
bdnzt eq,1b
blr
.globl strlen
strlen:
addi r4,r3,-1

2
arch/powerpc/boot/string.h
View file

@ -5,7 +5,9 @@
extern char *strcpy(char *dest, const char *src);
extern char *strncpy(char *dest, const char *src, size_t n);
extern char *strcat(char *dest, const char *src);
extern char *strchr(const char *s, int c);
extern int strcmp(const char *s1, const char *s2);
extern int strncmp(const char *s1, const char *s2, size_t n);
extern size_t strlen(const char *s);
extern size_t strnlen(const char *s, size_t count);