From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001 From: Vladimir Azarov Date: Tue, 1 Oct 2024 15:47:05 +0200 Subject: Initial version --- src/string/i386/memcpy.s | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/string/i386/memcpy.s (limited to 'src/string/i386/memcpy.s') diff --git a/src/string/i386/memcpy.s b/src/string/i386/memcpy.s new file mode 100644 index 0000000..0608dd8 --- /dev/null +++ b/src/string/i386/memcpy.s @@ -0,0 +1,32 @@ +.global memcpy +.global __memcpy_fwd +.hidden __memcpy_fwd +.type memcpy,@function +memcpy: +__memcpy_fwd: + push %esi + push %edi + mov 12(%esp),%edi + mov 16(%esp),%esi + mov 20(%esp),%ecx + mov %edi,%eax + cmp $4,%ecx + jc 1f + test $3,%edi + jz 1f +2: movsb + dec %ecx + test $3,%edi + jnz 2b +1: mov %ecx,%edx + shr $2,%ecx + rep + movsl + and $3,%edx + jz 1f +2: movsb + dec %edx + jnz 2b +1: pop %edi + pop %esi + ret -- cgit v1.2.3