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only use faster byte_copy on i386 to avoid bus error

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leitner 2002-08-14 13:54:36 +00:00
parent ffc91c62a3
commit 52b12478c6
2 changed files with 5 additions and 0 deletions
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3
CHANGES
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@ -1,3 +1,6 @@
0.14:
only use faster byte_copy on i386
0.13: 0.13:
fixed several bugs in test/uudecode.c fixed several bugs in test/uudecode.c
add uninstall target add uninstall target

2
byte/byte_copy.c
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@ -6,6 +6,7 @@ void byte_copy(void* out, unsigned int len, const void* in) {
register char* s=out; register char* s=out;
register const char* t=in; register const char* t=in;
register const char* u=t+len; register const char* u=t+len;
#ifdef __i386__
if (len>127) { if (len>127) {
if (sizeof(unsigned long)>4) { /* a good compiler should optimize this check away */ if (sizeof(unsigned long)>4) { /* a good compiler should optimize this check away */
for (;(unsigned long)t&7;) { for (;(unsigned long)t&7;) {
@ -21,6 +22,7 @@ void byte_copy(void* out, unsigned int len, const void* in) {
s+=sizeof(long); t+=sizeof(long); s+=sizeof(long); t+=sizeof(long);
} }
} }
#endif
for (;;) { for (;;) {
if (t==u) break; *s=*t; ++s; ++t; if (t==u) break; *s=*t; ++s; ++t;
if (t==u) break; *s=*t; ++s; ++t; if (t==u) break; *s=*t; ++s; ++t;