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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/string/x86_64/memcpy.s | |
Initial version
Diffstat (limited to 'src/string/x86_64/memcpy.s')
| -rw-r--r-- | src/string/x86_64/memcpy.s | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/string/x86_64/memcpy.s b/src/string/x86_64/memcpy.s new file mode 100644 index 0000000..3d960ef --- /dev/null +++ b/src/string/x86_64/memcpy.s @@ -0,0 +1,25 @@ +.global memcpy +.global __memcpy_fwd +.hidden __memcpy_fwd +.type memcpy,@function +memcpy: +__memcpy_fwd: + mov %rdi,%rax + cmp $8,%rdx + jc 1f + test $7,%edi + jz 1f +2: movsb + dec %rdx + test $7,%edi + jnz 2b +1: mov %rdx,%rcx + shr $3,%rcx + rep + movsq + and $7,%edx + jz 1f +2: movsb + dec %edx + jnz 2b +1: ret |