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Commit: RX: Recode 7 byte NOP instruction
- From: Nick Clifton <nickc at redhat dot com>
- To: binutils at sourceware dot org
- Date: Tue, 22 Sep 2015 17:32:08 +0100
- Subject: Commit: RX: Recode 7 byte NOP instruction
- Authentication-results: sourceware.org; auth=none
Hi Guys,
I am checking in the patch below to change the 7 byte NOP opcode for
the RX port. Using a MAX instruction is better than a BRA, as the
branch might incur additional delays.
Cheers
Nick
gas/ChangeLog
2015-09-22 Nick Clifton <nickc@redhat.com>
* config/tc-rx.c (nop_7): Recode using MAX.
diff --git a/gas/config/tc-rx.c b/gas/config/tc-rx.c
index e70295d..4345d58 100644
--- a/gas/config/tc-rx.c
+++ b/gas/config/tc-rx.c
@@ -1263,8 +1263,8 @@ static unsigned char nop_4[] = { 0x76, 0x10, 0x01, 0x00 };
static unsigned char nop_5[] = { 0x77, 0x10, 0x01, 0x00, 0x00 };
/* MUL #1,R0 - 1 cycle */
static unsigned char nop_6[] = { 0x74, 0x10, 0x01, 0x00, 0x00, 0x00 };
- /* BRA.S .+7 - 1 cycle */
-static unsigned char nop_7[] = { 0x0F, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 };
+ /* MAX 0x80000000,R0 - 1 cycle */
+static unsigned char nop_7[] = { 0xFD, 0x70, 0x40, 0x00, 0x00, 0x00, 0x80 };
static unsigned char *nops[] = { NULL, nop_1, nop_2, nop_3, nop_4, nop_5, nop_6, nop_7 };
#define BIGGEST_NOP 7