diff options
| -rw-r--r-- | sysdeps/x86_64/strcat.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sysdeps/x86_64/strcat.S b/sysdeps/x86_64/strcat.S index 549fd21b4a..e406e34b36 100644 --- a/sysdeps/x86_64/strcat.S +++ b/sysdeps/x86_64/strcat.S @@ -141,11 +141,13 @@ ENTRY (BP_SYM (strcat)) 2: /* Second step: Copy source to destination. */ - movq %rax, %rcx /* duplicate */ + movq %rsi, %rcx /* duplicate */ andl $7,%ecx /* mask alignment bits */ movq %rax, %rdx /* move around */ jz 22f /* aligned => start loop */ + neg %ecx /* align to 8 bytes. */ + addl $8, %ecx /* Align the source pointer. */ 21: movb (%rsi), %al /* Fetch a byte */ |