777d0abb00
Use switch.h to reduce warnings from clang about implicit declarations of functions. I used `grep ... do_*.c | sed ... | sort`, and some manual editing, to make the big list of Do???() functions.
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/** @file
|
|
* Sources of the "SETS" group instructions
|
|
*/
|
|
|
|
/* $Id$ */
|
|
|
|
#include "em_abs.h"
|
|
#include "global.h"
|
|
#include "log.h"
|
|
#include "trap.h"
|
|
#include "mem.h"
|
|
#include "text.h"
|
|
#include "fra.h"
|
|
#include "switch.h"
|
|
|
|
PRIVATE void bit_test(size), create_set(size);
|
|
|
|
/** INN w: Bit test on w byte set (bit number on top of stack) */
|
|
void DoINN(register size l)
|
|
{
|
|
LOG(("@Y6 DoINN(%ld)", l));
|
|
spoilFRA();
|
|
bit_test(arg_w(l));
|
|
}
|
|
|
|
/** SET w: Create singleton w byte set with bit n on (n is top of stack) */
|
|
void DoSET(register size l)
|
|
{
|
|
LOG(("@Y6 DoSET(%ld)", l));
|
|
spoilFRA();
|
|
create_set(arg_w(l));
|
|
}
|
|
|
|
/** Bit testing. Tests whether the bit with number to be found
|
|
* on TOS is on in 'w'-byte set.
|
|
* ON --> push 1 on stack.
|
|
* OFF -> push 0 on stack.
|
|
**/
|
|
PRIVATE void bit_test(size w)
|
|
{
|
|
register int bitno =
|
|
(int) swpop(); /* bitno on TOS */
|
|
register char test_byte = (char) 0;/* default value to be tested */
|
|
register int wordoff = bitno / 8;
|
|
register int bitoff = bitno % 8;
|
|
|
|
if (bitoff < 0) bitoff += 8;
|
|
|
|
if (must_test && !(IgnMask&BIT(ESET))) {
|
|
/* Only w*8 bits CAN be tested */
|
|
if (wordoff >= w) {
|
|
trap(ESET);
|
|
}
|
|
}
|
|
test_byte = stack_loc(SP + wordoff);
|
|
st_dec(w);
|
|
wpush((long)((test_byte & BIT(bitoff)) ? 1 : 0));
|
|
}
|
|
|
|
/** Set creation. Creates a singleton 'w'-byte set with as
|
|
* singleton member, the bit with number on TOS.
|
|
* The w bytes constituting the set are
|
|
* pushed on the stack.
|
|
**/
|
|
PRIVATE void create_set(size w)
|
|
{
|
|
register int bitno = (int) swpop();
|
|
register size nbytes = w;
|
|
register int wordoff = bitno / 8;
|
|
register int bitoff = bitno % 8;
|
|
|
|
if (bitoff < 0) bitoff += 8;
|
|
|
|
st_inc(nbytes);
|
|
while (--nbytes >= 0) {
|
|
st_stn(SP + nbytes, 0L, 1L);
|
|
}
|
|
|
|
if (must_test && !(IgnMask&BIT(ESET))) {
|
|
if (wordoff >= w) {
|
|
trap(ESET);
|
|
}
|
|
}
|
|
st_stn(SP + wordoff, (long)BIT(bitoff), 1L);
|
|
}
|
|
|