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author | Christopher Faylor <me+cygwin@cgf.cx> | 2000-02-17 19:39:46 +0000 |
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committer | Christopher Faylor <me+cygwin@cgf.cx> | 2000-02-17 19:39:46 +0000 |
commit | 43b55bace5fad27af5da7a99784667363b92c45d (patch) | |
tree | 17fe82f6ba0d93b76d10dd73d4945ab81b69db40 /newlib/libc/machine/i386/memset.S | |
parent | 8dabd7496a9eeaca2a7180c0a176059ba9229bb2 (diff) | |
download | gdb-43b55bace5fad27af5da7a99784667363b92c45d.tar.gz |
import newlib-2000-02-17 snapshotnewlib-2000-02-17SNAPSHOT
Diffstat (limited to 'newlib/libc/machine/i386/memset.S')
-rw-r--r-- | newlib/libc/machine/i386/memset.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/newlib/libc/machine/i386/memset.S b/newlib/libc/machine/i386/memset.S new file mode 100644 index 00000000000..12e33e443f4 --- /dev/null +++ b/newlib/libc/machine/i386/memset.S @@ -0,0 +1,59 @@ +/* + * ==================================================== + * Copyright (C) 1998 by Cygnus Solutions. All rights reserved. + * + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + + #include "i386mach.h" + + .global SYM (memset) + +SYM (memset): + + pushl ebp + movl esp,ebp + pushl edi + pushl ebx + movl 8(ebp),edi + movl 12(ebp),eax + movl 16(ebp),ecx + cld + +#ifndef __OPTIMIZE_SIZE__ + andl $255,eax + movl ecx,ebx + testl $3,edi + jne .L19 + cmpl $16,ecx + jbe .L19 + + movl eax,edx + sall $8,eax + orl edx,eax + + movl eax,edx + sall $16,edx + orl edx,eax + + shrl $2,ecx + andl $3,ebx + rep + stosl + movl ebx,ecx +#endif /* not __OPTIMIZE_SIZE__ */ + +.L19: + rep + stosb + + movl 8(ebp),eax + + leal -8(ebp),esp + popl ebx + popl edi + leave + ret |