From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sun, 22 Mar 2020 08:52:48 +0000 (+0100)
Subject: efi_loader: fix freestanding memmove()
X-Git-Tag: v2020.04-rc4~7^2~2
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=72291a9d83ec2fe50cc8fac304e8ecd5534daf5e;p=oweals%2Fu-boot.git

efi_loader: fix freestanding memmove()

For EFI binaries we have to provide an implementation of memmove() in
efi_freestanding.c.

Before this patch the memmove() function was copying in the wrong
direction.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---

diff --git a/lib/efi_loader/efi_freestanding.c b/lib/efi_loader/efi_freestanding.c
index dcf5d1c49a..bd0dff162f 100644
--- a/lib/efi_loader/efi_freestanding.c
+++ b/lib/efi_loader/efi_freestanding.c
@@ -47,7 +47,7 @@ void *memmove(void *dest, const void *src, size_t n)
 	u8 *d = dest;
 	const u8 *s = src;
 
-	if (d >= s) {
+	if (d <= s) {
 		for (; n; --n)
 			*d++ = *s++;
 	} else {