Fix handling of misaligned bytes in fill

2018-02-04 05:38:49 +01:00
parent e9f70853c6
commit 2cda82eeea
2 changed files with 15 additions and 25 deletions
--- a/arch/x64/linux/memory/fill.S
+++ b/arch/x64/linux/memory/fill.S
@ -37,6 +37,11 @@ _D5tanya6memory2op10fillMemoryFNaNbNiAvmZv:

 		mov %rsi,  %r8

+		// If the length is less than the number of misaligned bytes,
+		// write one byte at a time and exit
+		cmp %rax, %rcx
+		jg aligned_1
+
 	naligned:
 		mov %dl, (%r8) // Write a byte