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Change 7-byte NOP instruction for RX target, so that it only takes 1 cycle to excute.

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* config/tc-rx.c (nop_7): Recode using MAX.
This commit is contained in:
Nick Clifton 2015-09-22 17:32:28 +01:00
parent f04265eceb
commit e3ec6cc681
2 changed files with 6 additions and 2 deletions
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4
gas/ChangeLog
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@ -1,3 +1,7 @@
2015-09-22 Nick Clifton <nickc@redhat.com>
* config/tc-rx.c (nop_7): Recode using MAX.
2015-09-05 Chen Gang <gang.chen.5i5j@gmail.com>
* config/tc-avr.c (md_section_align): Append UL for -1 to avoid

4
gas/config/tc-rx.c
View File

@ -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