LibC: Cleanup memmove and memcpy for x86_64

2025-08-16 14:05:21 +03:00 · 2025-08-16 14:05:21 +03:00 · ceca93c8b1
parent b6793cc6f2
commit ceca93c8b1
1 changed files with 1 additions and 3 deletions
--- a/userspace/libraries/LibC/arch/x86_64/string.S
+++ b/userspace/libraries/LibC/arch/x86_64/string.S
@ -27,22 +27,20 @@ memcmp:
 memcpy:
 	movq %rdi, %rax
 	movq %rdx, %rcx
-	movq %rdi, %rdx
 	rep movsb
-	movq %rdx, %rax
 	ret

 .global memmove
 memmove:
 	cmpq %rdi, %rsi
 	jae memcpy
+	movq %rdi, %rax
 	leaq -1(%rdi, %rdx), %rdi
 	leaq -1(%rsi, %rdx), %rsi
 	movq %rdx, %rcx
 	std
 	rep movsb
 	cld
-	leaq 1(%rdi), %rax
 	ret

 .global memset