Module Name: src
Committed By: skrll
Date: Fri Nov 23 12:39:19 UTC 2018
Modified Files:
src/lib/libc/arch/aarch64/gen: swapcontext.S
Log Message:
Update comments to help explain what's going on
To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/lib/libc/arch/aarch64/gen/swapcontext.S
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/lib/libc/arch/aarch64/gen/swapcontext.S
diff -u src/lib/libc/arch/aarch64/gen/swapcontext.S:1.3 src/lib/libc/arch/aarch64/gen/swapcontext.S:1.4
--- src/lib/libc/arch/aarch64/gen/swapcontext.S:1.3 Fri Nov 23 11:38:07 2018
+++ src/lib/libc/arch/aarch64/gen/swapcontext.S Fri Nov 23 12:39:18 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: swapcontext.S,v 1.3 2018/11/23 11:38:07 skrll Exp $ */
+/* $NetBSD: swapcontext.S,v 1.4 2018/11/23 12:39:18 skrll Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -33,7 +33,7 @@
#include "assym.h"
#if defined(LIBC_SCCS) && !defined(lint)
- RCSID("$NetBSD: swapcontext.S,v 1.3 2018/11/23 11:38:07 skrll Exp $")
+ RCSID("$NetBSD: swapcontext.S,v 1.4 2018/11/23 12:39:18 skrll Exp $")
#endif /* LIBC_SCCS && !lint */
/* LINTSTUB: int swapcontext(ucontext_t * restrict, ucontext_t * restrict); */
@@ -42,12 +42,12 @@ ENTRY(swapcontext)
sub sp, sp, #32 /* allocate stack frame */
stp x29, x30, [sp, #16] /* save FP & LR */
add x29, sp, #16 /* new FP */
- stp x0, x1, [sp, #0] /* save oucp & ucp */
+ stp x0, x1, [sp, #0] /* save oucp (x0) & ucp (x1) */
bl _C_LABEL(_getcontext) /* getcontext(oucp) */
mov x3, x0 /* save return value */
- ldp x2, x0, [sp, #0] /* restore oucp & ucp */
+ ldp x2, x0, [sp, #0] /* load oucp (x2) & ucp (x0) */
ldp x29, x30, [sp, #16] /* restore FP & LR */
add sp, sp, #32 /* free stack frame */
