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| author | Nick Clifton <nickc@redhat.com> | 2015-09-22 17:32:28 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2015-09-22 17:32:28 +0100 |
| commit | e3ec6cc681835fcd1457aedbf5cea914915e89a8 (patch) | |
| tree | f1cf3cb9494c5c41516b5bdb480d2b66cb9da90b /gas | |
| parent | f04265eceb78a33e452faa8727562e96af374f39 (diff) | |
| download | gdb-e3ec6cc681835fcd1457aedbf5cea914915e89a8.zip gdb-e3ec6cc681835fcd1457aedbf5cea914915e89a8.tar.gz gdb-e3ec6cc681835fcd1457aedbf5cea914915e89a8.tar.bz2 | |
Change 7-byte NOP instruction for RX target, so that it only takes 1 cycle to excute.
* config/tc-rx.c (nop_7): Recode using MAX.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 4 | ||||
| -rw-r--r-- | gas/config/tc-rx.c | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index c0fb096..fe1ed74 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -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 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 |