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| author | Richard Qin <richard.qin.x@gmail.com> | 2026-07-10 11:31:46 +0800 |
|---|---|---|
| committer | Richard Qin <richard.qin.x@gmail.com> | 2026-07-10 11:31:46 +0800 |
| commit | e90b72ec3082588b296956730bd2930cf8d5d671 (patch) | |
| tree | 36ff6916af9b4176ea5a9662219d11e721f0b691 /lib/string/i386/memcpy.s | |
| parent | 1767d390fbf3d0c65389de46caf0b6d43ef3b6ad (diff) | |
| download | lume-e90b72ec3082588b296956730bd2930cf8d5d671.tar.gz lume-e90b72ec3082588b296956730bd2930cf8d5d671.tar.xz | |
refactor: promote new architecture to repository root
Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.
Diffstat (limited to 'lib/string/i386/memcpy.s')
| -rw-r--r-- | lib/string/i386/memcpy.s | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/string/i386/memcpy.s b/lib/string/i386/memcpy.s new file mode 100644 index 0000000..0608dd8 --- /dev/null +++ b/lib/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 |