[src/trunk]: src/sys/arch/amd64/stand/prekern Implement memcpy, the builtin v...

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/032dcf69cec1
branches:  trunk
changeset: 357428:032dcf69cec1
user:      maxv <maxv%NetBSD.org@localhost>
date:      Fri Nov 10 08:52:57 2017 +0000

description:
Implement memcpy, the builtin version does not work with variable sizes.

diffstat:

 sys/arch/amd64/stand/prekern/prekern.h |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (34 lines):

diff -r d0fe3ca974e5 -r 032dcf69cec1 sys/arch/amd64/stand/prekern/prekern.h
--- a/sys/arch/amd64/stand/prekern/prekern.h    Fri Nov 10 08:05:38 2017 +0000
+++ b/sys/arch/amd64/stand/prekern/prekern.h    Fri Nov 10 08:52:57 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: prekern.h,v 1.7 2017/11/10 08:05:38 maxv Exp $ */
+/*     $NetBSD: prekern.h,v 1.8 2017/11/10 08:52:57 maxv Exp $ */
 
 /*
  * Copyright (c) 2017 The NetBSD Foundation, Inc. All rights reserved.
@@ -41,7 +41,6 @@
 #define MM_PROT_EXECUTE        0x02
 
 #define ASSERT(a) if (!(a)) fatal("ASSERT");
-#define memcpy(d, v, l) __builtin_memcpy(d, v, l)
 typedef uint64_t paddr_t;
 typedef uint64_t vaddr_t;
 typedef uint64_t pt_entry_t;
@@ -60,6 +59,16 @@
 /* -------------------------------------------------------------------------- */
 
 static inline void
+memcpy(void *dst, void *src, size_t sz)
+{
+       char *bdst = dst, *bsrc = src;
+       while (sz > 0) {
+               *bdst = *bsrc;
+               bdst++, bsrc++, sz--;
+       }
+}
+
+static inline void
 memset(void *dst, char c, size_t sz)
 {
        char *bdst = dst;