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Upgrade assembler to allow a move immediate of 0.
This is helpful in certain macros where we can't know the value of the
immediate in advance.
This commit is contained in:
gibbs 2002-09-26 21:46:19 +00:00
parent b8492c6de7
commit 2d71e77806
5 changed files with 26 additions and 7 deletions
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2
sys/dev/aic7xxx/aicasm/Makefile
View File

@ -1,4 +1,4 @@
# $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aicasm/Makefile#1 $
# $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aicasm/Makefile#2 $
#
# $FreeBSD$

22
sys/dev/aic7xxx/aicasm/aicasm_gram.y
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@ -38,11 +38,12 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_gram.y#21 $
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_gram.y#24 $
*
* $FreeBSD$
*/
#include <inttypes.h>
#include <sys/types.h>
#include <inttypes.h>
@ -937,6 +938,8 @@ immediate_or_a:
| T_A
{
SLIST_INIT(&$$.referenced_syms);
symlist_add(&$$.referenced_syms, accumulator.symbol,
SYMLIST_INSERT_HEAD);
$$.value = 0;
}
;
@ -1236,9 +1239,22 @@ code:
;
code:
T_MVI destination ',' immediate_or_a ret ';'
T_MVI destination ',' immediate ret ';'
{
format_1_instr(AIC_OP_OR, &$2, &$4, &allzeros, $5);
if ($4.value == 0
&& is_download_const(&$4) == 0) {
expression_t immed;
/*
* Allow move immediates of 0 so that macros,
* that can't know the immediate's value and
* otherwise compensate, still work.
*/
make_expression(&immed, 0xff);
format_1_instr(AIC_OP_AND, &$2, &immed, &allzeros, $5);
} else {
format_1_instr(AIC_OP_OR, &$2, &$4, &allzeros, $5);
}
}
;

3
sys/dev/aic7xxx/aicasm/aicasm_macro_scan.l
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@ -38,11 +38,12 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_macro_scan.l#4 $
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_macro_scan.l#6 $
*
* $FreeBSD$
*/
#include <inttypes.h>
#include <sys/types.h>
#include <limits.h>

3
sys/dev/aic7xxx/aicasm/aicasm_scan.l
View File

@ -38,11 +38,12 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_scan.l#16 $
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_scan.l#17 $
*
* $FreeBSD$
*/
#include <inttypes.h>
#include <sys/types.h>
#include <limits.h>

3
sys/dev/aic7xxx/aicasm/aicasm_symbol.c
View File

@ -37,11 +37,12 @@
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_symbol.c#21 $
* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_symbol.c#22 $
*
* $FreeBSD$
*/
#include <inttypes.h>
#include <sys/types.h>
#ifdef __linux__