Clarify comment segfault behaviour when absent

2019-08-15 19:06:33 +02:00
parent f2cad14426
commit 2ba89b1b8e
1 changed files with 3 additions and 0 deletions
--- a/x86_64/6_clib.asm
+++ b/x86_64/6_clib.asm
@@ -29,6 +29,9 @@ main:

 	; This segfaults when moved below the line "jne .fail"
 	; Why?
+	; Because it stores the float registers on the stack
+	; as well. This doesn't seem to be particularly well
+	; documented.
 	sub rsp, 8 ; allocate 8 bytes = 2 integers

 	cmp r12, 3 ; argc == 3