From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 20 Jan 2012 09:07:21 +0000 (+0000)
Subject: cmd_mem: cmp: unify size code paths
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=054ea170f271f869396eaea2ff14c52aa43d41c5;p=project%2Fbcm63xx%2Fu-boot.git

cmd_mem: cmp: unify size code paths

Not only does the source code get simpler, but it also shrinks the
compiled object code too.

While we're here, tweak the summary message to avoid the plural
issue.  It isn't that big of a deal, and it's currently wrong
anyways in the single (1 byte) case:
	Total of 1 byte were the same
Grammar wise, that should be "was" rather than "were".  The new
output people should be able to easily figure out:
	Total of 1 byte(s) were the same
	Total of 10 byte(s) were the same

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---

diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index 91af7995b4..7a199f51b1 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -258,6 +258,7 @@ int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	ulong	addr1, addr2, count, ngood;
 	int	size;
 	int     rcode = 0;
+	const char *type;
 
 	if (argc != 4)
 		return CMD_RET_USAGE;
@@ -266,6 +267,7 @@ int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	*/
 	if ((size = cmd_get_data_size(argv[0], 4)) < 0)
 		return 1;
+	type = size == 4 ? "word" : size == 2 ? "halfword" : "byte";
 
 	addr1 = simple_strtoul(argv[1], NULL, 16);
 	addr1 += base_address;
@@ -292,39 +294,25 @@ int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	ngood = 0;
 
 	while (count-- > 0) {
+		ulong word1, word2;
 		if (size == 4) {
-			ulong word1 = *(ulong *)addr1;
-			ulong word2 = *(ulong *)addr2;
-			if (word1 != word2) {
-				printf("word at 0x%08lx (0x%08lx) "
-					"!= word at 0x%08lx (0x%08lx)\n",
-					addr1, word1, addr2, word2);
-				rcode = 1;
-				break;
-			}
-		}
-		else if (size == 2) {
-			ushort hword1 = *(ushort *)addr1;
-			ushort hword2 = *(ushort *)addr2;
-			if (hword1 != hword2) {
-				printf("halfword at 0x%08lx (0x%04x) "
-					"!= halfword at 0x%08lx (0x%04x)\n",
-					addr1, hword1, addr2, hword2);
-				rcode = 1;
-				break;
-			}
+			word1 = *(ulong *)addr1;
+			word2 = *(ulong *)addr2;
+		} else if (size == 2) {
+			word1 = *(ushort *)addr1;
+			word2 = *(ushort *)addr2;
+		} else {
+			word1 = *(u_char *)addr1;
+			word2 = *(u_char *)addr2;
 		}
-		else {
-			u_char byte1 = *(u_char *)addr1;
-			u_char byte2 = *(u_char *)addr2;
-			if (byte1 != byte2) {
-				printf("byte at 0x%08lx (0x%02x) "
-					"!= byte at 0x%08lx (0x%02x)\n",
-					addr1, byte1, addr2, byte2);
-				rcode = 1;
-				break;
-			}
+		if (word1 != word2) {
+			printf("%s at 0x%08lx (%#0*lx) != %s at 0x%08lx (%#0*lx)\n",
+				type, addr1, size, word1,
+				type, addr2, size, word2);
+			rcode = 1;
+			break;
 		}
+
 		ngood++;
 		addr1 += size;
 		addr2 += size;
@@ -334,9 +322,7 @@ int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 			WATCHDOG_RESET();
 	}
 
-	printf("Total of %ld %s%s were the same\n",
-		ngood, size == 4 ? "word" : size == 2 ? "halfword" : "byte",
-		ngood == 1 ? "" : "s");
+	printf("Total of %ld %s(s) were the same\n", ngood, type);
 	return rcode;
 }