d0p1/ack
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

made a bit more portable

Browse source
This commit is contained in:
ceriel 1988-10-17 10:38:30 +00:00
parent 0f8489fe28
commit 8b6ba39da4
1 changed files with 22 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
mach/arm/as/mach5.c
View file

@ -42,8 +42,7 @@ short typ;
return;
}
switch (opc){
case MOV:
if (opc == MOV) {
if (small((val & 0xF0000000) == 0xF0000000, 8)){
emit4(0xE51F0004 | (ins & 0xF000));
emit4(val);
@ -57,7 +56,8 @@ short typ;
}
DOTVAL += 16;
return;
case ADD:
}
if (opc == ADD) {
if (small((val & 0xF0000000) == 0xF0000000, 4)){
emit4(0xE51F0004 | (ins & 0xF000));
emit4(val);
@ -69,13 +69,11 @@ short typ;
emit4(val);
emit4(0xE2800000 | (ins&0xFF000) | (ins&0xF000)>>12);
return;
default:
if (pass == PASS_1)
DOTVAL += 16;
else
serror("immediate value out of range");
return;
}
if (pass == PASS_1)
DOTVAL += 16;
else
serror("immediate value out of range");
}
calcimm(opc,val,typ)
@ -90,35 +88,32 @@ short typ;
if ((*val & ~0xFF) == 0) return 1;
if ((~*val & ~0xFF) == 0){
switch (*opc){
case AND:
if (*opc == AND) {
*val = ~*val;
*opc = BIC;
return 1;
case MOV:
}
if (*opc == MOV) {
*val = ~*val;
*opc = MVN;
return 1;
case ADC:
}
if (*opc == ADC) {
*val = ~*val;
*opc = SBC;
return 1;
default :
break;
}
}
if ((-1**val & ~0xFF) == 0 ){
switch (*opc){
case ADD:
if (*opc == ADD) {
*val *= -1;
*opc = SUB;
return 1;
case CMP:
}
if (*opc == CMP) {
*val *= -1;
*opc = CMN;
return 1;
default:
break;
}
}
@ -130,21 +125,20 @@ short typ;
return 1;
}
if ((~*val & ~0xFF) == 0){
switch (*opc){
case AND:
if (*opc == AND) {
*val = ~*val|i<<8;
*opc = BIC;
return 1;
case MOV:
}
if (*opc == MOV) {
*val = ~*val|i<<8;
*opc = MVN;
return 1;
case ADC:
}
if (*opc == ADC) {
*val = ~*val|i<<8;
*opc = SBC;
return 1;
default :
break;
}
}
}while(i<15);
@ -205,13 +199,13 @@ short typ;
if (typ != S_ABS){
tmpval = val-DOTVAL-8;
if (small((tmpval & ~0xFF) == 0),12){
emit4(0xE2000000|ADD|0xF<<16|reg<<12|tmpval);
emit4(0xE2000000|ADD|(long)0xF<<16|reg<<12|tmpval);
return 0;
}
tmpval *= -1;
if (small((tmpval & ~0xFF) == 0), 12){
emit4(0xE2000000|SUB|0xF<<16|reg<<12|tmpval);
emit4(0xE2000000|SUB|(long)0xF<<16|reg<<12|tmpval);
return 0;
}
}