{
if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
return error("scale factor expression must evaluate");
+
switch (AnEXVAL)
{
case 1:
break;
default:
goto badmode;
- }
+ }
}
else if (*tok++ != CONST || *tok > 8)
goto badmode;
}
if (*tok == '*')
- { // scale: *1, *2, *4, *8
+ { // scale: *1, *2, *4, *8
tok++;
if (*tok == SYMBOL)
tok++;
AnEXTEN|=EXT_FULLWORD; //Definitely using full extension format, so set bit 8
// Check to see if base displacement is present
- //WARNING("expr will return a bad expression error here but this is expected, it needs to be silenced!");
if (*tok!=CONST && *tok !=SYMBOL)
- //if (expr(AnBEXPR, &AnBEXVAL, &AnBEXATTR, &AnESYM) != OK)
{
AnEXTEN|=EXT_BDSIZE0;
- //tok++;
- //tok--; //Rewind tok since expr advances it forward
}
else
{
expr(AnBEXPR, &AnBEXVAL, &AnBEXATTR, &AnESYM);
- if (optim_flags[OPT_BASE_DISP] && AnBEXVAL==0 && AnEXATTR!=0)
+ if (CHECK_OPTS(OPT_BASE_DISP) && AnBEXVAL==0 && AnEXATTR!=0)
{
// bd=0 so let's optimise it out
AnEXTEN|=EXT_BDSIZE0;
}
else if (*tok==DOTL)
- { // ([bd.l,...
+ { // ([bd.l,...
AnEXTEN|=EXT_BDSIZEL;
tok++;
}
else
- { // ([bd[.w],... or ([bd,...
+ { // ([bd[.w],... or ([bd,...
// Is .W forced here?
if (*tok == DOTW)
{
{
// Defined, absolute values from $FFFF8000..$00007FFF get optimized
// to absolute short
- if (optim_flags[OPT_ABS_SHORT]
+ if (CHECK_OPTS(OPT_ABS_SHORT)
&& ((AnBEXATTR & (TDB | DEFINED)) == DEFINED)
&& ((AnBEXVAL + 0x8000) < 0x10000))
{
{
//No index found, suppress it
AnEXTEN |= EXT_IS;
- tok--; // Rewind tok to point to the comma
- goto IS_SUPPRESSEDn; // https://xkcd.com/292/ - what does he know anyway?
+ tok--; // Rewind tok to point to the comma
+ goto IS_SUPPRESSEDn; // https://xkcd.com/292/ - what does he know anyway?
}
// Check for size
{
if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
return error("scale factor expression must evaluate");
+
switch (AnEXVAL)
- {
- case 1:
- break;
- case 2:
+ {
+ case 1:
+ break;
+ case 2:
AnIXSIZ |= TIMES2;
- break;
- case 4:
+ break;
+ case 4:
AnIXSIZ |= TIMES4;
- break;
- case 8:
+ break;
+ case 8:
AnIXSIZ |= TIMES8;
- break;
- default:
- goto badmode;
+ break;
+ default:
+ goto badmode;
}
}
else if (*tok++ != CONST || *tok > 8)
if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
goto badmode;
- if (optim_flags[OPT_BASE_DISP] && (AnEXVAL == 0))
+ if (CHECK_OPTS(OPT_BASE_DISP) && (AnEXVAL == 0))
{
// od=0 so optimise it out
AMn = MEMPOST; // let's say it's ([bd,An],Xn,od) with od=0 then
// Defined, absolute values from $FFFF8000..$00007FFF get
// optimized to absolute short
- if (optim_flags[OPT_ABS_SHORT]
+ if (CHECK_OPTS(OPT_ABS_SHORT)
&& ((AnEXATTR & (TDB | DEFINED)) == DEFINED)
&& ((AnEXVAL + 0x8000) < 0x10000))
{
expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM);
- if (optim_flags[OPT_BASE_DISP] && (AnEXVAL == 0))
+ if (CHECK_OPTS(OPT_BASE_DISP) && (AnEXVAL == 0))
{
// od=0 so optimise it out
AMn = MEMPOST; // let's say it's ([bd,An],Xn,od) with od=0 then
// Defined, absolute values from $FFFF8000..$00007FFF get
// optimized to absolute short
- else if (optim_flags[OPT_BASE_DISP]
+ else if (CHECK_OPTS(OPT_BASE_DISP)
&& ((AnEXATTR & (TDB | DEFINED)) == DEFINED)
&& ((AnEXVAL + 0x8000) < 0x10000))
{
tok++;
goto AnOK;
}
- else if (*tok++!=',')
+ else if (*tok++ != ',')
return error("comma expected after ]");
- WARNING(Put symbol and constant checks here!)
-
- if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
- goto badmode;
-
- if (optim_flags[OPT_BASE_DISP] && (AnEXVAL == 0))
+ if (*tok == SYMBOL || *tok == CONST)
{
- // od=0 so optimise it out
- AMn = MEMPRE; // let's say it's ([bd,An],Xn,od) with od=0 then
- AnEXTEN |= EXT_IISPRE0; // No outer displacement
- tok++;
- goto AnOK;
+ if (expr(AnEXPR, &AnEXVAL, &AnEXATTR, &AnESYM) != OK)
+ goto badmode;
+
+ if (CHECK_OPTS(OPT_BASE_DISP) && (AnEXVAL == 0) && (AnEXATTR & DEFINED))
+ {
+ // od=0 so optimise it out
+ AMn = MEMPRE; // let's say it's ([bd,An],Xn,od) with od=0 then
+ AnEXTEN |= EXT_IISPRE0; // No outer displacement
+ tok++;
+ goto AnOK;
+ }
}
// ([bd,An/PC,Xn],od)
else
{
// expr.[W]
- //tok++;
-
- AnEXTEN |= EXT_IISPREW;
AMn = MEMPRE;
+ int expr_size = EXT_IISPREW; // Assume we have a .w value
- // Is .W forced here?
- if (*tok == DOTW)
+ if ((AnEXVAL + 0x8000) > 0x10000)
{
- tok++;
+ // Long value, so mark it as such for now
+ expr_size = EXT_IISPREL;
+
+ // Defined, absolute values from $FFFF8000..$00007FFF
+ // get optimized to absolute short
+ if (CHECK_OPTS(OPT_BASE_DISP)
+ && ((AnEXATTR & (TDB | DEFINED)) == DEFINED)
+ && ((AnEXVAL + 0x8000) < 0x10000))
+ {
+ expr_size = EXT_IISPREW;
+ warn("outer displacement absolute value from $FFFF8000..$00007FFF optimised to absolute short");
+ }
}
- // Defined, absolute values from $FFFF8000..$00007FFF get optimized
- // to absolute short
- else if (optim_flags[OPT_BASE_DISP]
- && ((AnEXATTR & (TDB | DEFINED)) == DEFINED)
- && ((AnEXVAL + 0x8000) < 0x10000))
+ AnEXTEN |= expr_size; // Assume we have a .w value
+
+ // Is .W forced here?
+ if (*tok == DOTW)
{
- AnEXTEN |= EXT_IISPREW;
- warn("outer displacement absolute value from $FFFF8000..$00007FFF optimised to absolute short");
+ tok++;
+
+ if (expr_size == EXT_IISPREL)
+ return error("outer displacement value does not fit in .w size");
}
}
}
else if (*tok == ')')
{
- AMn = PCDISP; // expr(PC)
+ AMn = PCDISP; // expr(PC)
tok++;
goto AnOK;
}
// Defined, absolute values from $FFFF8000..$00007FFF get optimized
// to absolute short
- if (optim_flags[OPT_ABS_SHORT]
+ if (CHECK_OPTS(OPT_ABS_SHORT)
&& ((AnEXATTR & (TDB | DEFINED)) == DEFINED)
&& ((AnEXVAL + 0x8000) < 0x10000))
{
AMn = PCINDEXED;
goto AMn_IXN;
}
+
goto badmode;
}
projects / rmac / blobdiff