/*-------------------------------------------------------------------------
gen.c - Z80 specific code generator.
-
+
Michael Hope <michaelh@juju.net.nz> 2000
Based on the mcs51 generator -
Sandeep Dutta . sandeep.dutta@usa.net (1998)
No asm strings
Includes long mul/div in code
2. Optimised memcpy for acc use 32102 102 226B
- 3. Optimised strcpy for acc use 27819 117 2237
+ 3. Optimised strcpy for acc use 27819 117 2237
3a Optimised memcpy fun
- 4. Optimised strcmp fun 21999 149 2294
- 5. Optimised strcmp further 21660 151 228C
- 6. Optimised memcpy by unroling 20885 157 2201
- 7. After turning loop induction on 19862 165 236D
- 8. Same as 7 but with more info
- 9. With asm optimised strings 17030 192 2223
+ 4. Optimised strcmp fun 21999 149 2294
+ 5. Optimised strcmp further 21660 151 228C
+ 6. Optimised memcpy by unroling 20885 157 2201
+ 7. After turning loop induction on 19862 165 236D
+ 8. Same as 7 but with more info
+ 9. With asm optimised strings 17030 192 2223
10 and below are with asm strings off.
- 10 Mucho optimisations 13562 201 1FCC
+ 10 Mucho optimisations 13562 201 1FCC
Apparent advantage of turning on regparams:
1. Cost of push
- Decent case is push of a constant
+ Decent case is push of a constant
- ld hl,#n; push hl: (10+11)*nargs
2. Cost of pull from stack
Using asm with ld hl, etc
3. Cost of fixing stack
- pop hl*nargs
10*nargs
-
- So cost is (10+11+7+6+7+10)*nargs+10+11
+
+ So cost is (10+11+7+6+7+10)*nargs+10+11
= 51*nargs+21
= 123 for mul, div, strcmp, strcpy
Saving of (98298+32766+32766+32766)*123 = 24181308
area. ix-0 is the top most local variable.
*/
-enum
+enum
{
/* Set to enable debugging trace statements in the output assembly code. */
DISABLE_DEBUG = 0
};
// PENDING
-#define ACC_NAME _pairs[PAIR_AF].h
+#define ACC_NAME _pairs[PAIR_AF].h
-enum
+enum
{
LSB,
MSB16,
/** Code generator persistent data.
*/
-static struct
+static struct
{
/** Used to optimised setting up of a pair by remebering what it
contains and adjusting instead of reloading where possible.
*/
- struct
+ struct
{
AOP_TYPE last_type;
const char *base;
int offset;
} pairs[NUM_PAIRS];
- struct
+ struct
{
int last;
int pushed;
const char *lastFunctionName;
iCode *current_iCode;
bool preserveCarry;
-
+
set *sendSet;
struct
bool saved;
} saves;
- struct
+ struct
{
lineNode *head;
lineNode *current;
isPairInUseNotInRet(PAIR_ID id, iCode *ic)
{
bitVect *rInUse;
-
+
rInUse = bitVectCplAnd (bitVectCopy (ic->rMask), ic->rUsed);
-
+
if (id == PAIR_DE)
{
return bitVectBitValue (rInUse, D_IDX) || bitVectBitValue(rInUse, E_IDX);
{
return PAIR_INVALID;
}
-}
+}
static void
_tidyUp (char *buf)
_tidyUp (buffer);
_G.lines.current = (_G.lines.current ?
- connectLine (_G.lines.current, _newLineNode (buffer)) :
- (_G.lines.head = _newLineNode (buffer)));
+ connectLine (_G.lines.current, _newLineNode (buffer)) :
+ (_G.lines.head = _newLineNode (buffer)));
_G.lines.current->isInline = _G.lines.isInline;
_G.lines.current->isDebug = _G.lines.isDebug;
static void
_emitMove(const char *to, const char *from)
{
- if (STRCASECMP(to, from) != 0)
+ if (STRCASECMP(to, from) != 0)
{
emit2("ld %s,%s", to, from);
}
- else
+ else
{
// Optimise it out.
// Could leave this to the peephole, but sometimes the peephole is inhibited.
int i;
char regbuf[9];
char *rbp = regbuf;
-
+
emitDebug("; Dump of %s: type %s size %u", plabel, aopNames[aop->type], aop->size);
switch (aop->type)
{
break;
case AOP_PAIRPTR:
emitDebug("; pairptr = (%s)", _pairs[aop->aopu.aop_pairId].name);
-
+
default:
/* No information. */
break;
if (aop->type == AOP_REG)
{
switch (aop->aopu.aop_reg[0]->rIdx)
- {
- case C_IDX:
- return "bc";
- break;
- case E_IDX:
- return "de";
- break;
- case L_IDX:
- return "hl";
- break;
- }
+ {
+ case C_IDX:
+ return "bc";
+ break;
+ case E_IDX:
+ return "de";
+ break;
+ case L_IDX:
+ return "hl";
+ break;
+ }
}
else if (aop->type == AOP_STR || aop->type == AOP_HLREG)
{
if (aop->size == 2)
{
if (aop->type == AOP_REG)
- {
- if ((aop->aopu.aop_reg[0]->rIdx == C_IDX) && (aop->aopu.aop_reg[1]->rIdx == B_IDX))
- {
- return PAIR_BC;
- }
- if ((aop->aopu.aop_reg[0]->rIdx == E_IDX) && (aop->aopu.aop_reg[1]->rIdx == D_IDX))
- {
- return PAIR_DE;
- }
- if ((aop->aopu.aop_reg[0]->rIdx == L_IDX) && (aop->aopu.aop_reg[1]->rIdx == H_IDX))
- {
- return PAIR_HL;
- }
- }
+ {
+ if ((aop->aopu.aop_reg[0]->rIdx == C_IDX) && (aop->aopu.aop_reg[1]->rIdx == B_IDX))
+ {
+ return PAIR_BC;
+ }
+ if ((aop->aopu.aop_reg[0]->rIdx == E_IDX) && (aop->aopu.aop_reg[1]->rIdx == D_IDX))
+ {
+ return PAIR_DE;
+ }
+ if ((aop->aopu.aop_reg[0]->rIdx == L_IDX) && (aop->aopu.aop_reg[1]->rIdx == H_IDX))
+ {
+ return PAIR_HL;
+ }
+ }
else if (aop->type == AOP_STR || aop->type == AOP_HLREG)
- {
+ {
int i;
for (i = 0; i < NUM_PAIRS; i++)
{
/* Given a register name, spill the pair (if any) the register is part of */
static void
spillPairReg (const char *regname)
-{
+{
if (strlen(regname)==1)
{
switch (*regname)
sym->aop = aop = newAsmop (AOP_SFR);
aop->aopu.aop_dir = sym->rname;
aop->size = getSize (sym->type);
- emitDebug ("; AOP_SFR for %s", sym->rname);
+ emitDebug ("; AOP_SFR for %s", sym->rname);
return aop;
}
}
{
/* if plus or minus print the right hand side */
if (ic->op == '+' || ic->op == '-')
- {
- /* PENDING: for re-target */
- sprintf (s, "0x%04x %c ", (int) operandLitValue (IC_RIGHT (ic)),
- ic->op);
- s += strlen (s);
- ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
- continue;
- }
+ {
+ /* PENDING: for re-target */
+ sprintf (s, "0x%04x %c ", (int) operandLitValue (IC_RIGHT (ic)),
+ ic->op);
+ s += strlen (s);
+ ic = OP_SYMBOL (IC_LEFT (ic))->rematiCode;
+ continue;
+ }
/* we reached the end */
sprintf (s, "%s", OP_SYMBOL (IC_LEFT (ic))->rname);
break;
{
int j;
if (!sym1->regs[i])
- continue;
+ continue;
for (j = 0; j < sym2->nRegs; j++)
- {
- if (!sym2->regs[j])
- continue;
+ {
+ if (!sym2->regs[j])
+ continue;
- if (sym2->regs[j] == sym1->regs[i])
- return TRUE;
- }
+ if (sym2->regs[j] == sym1->regs[i])
+ return TRUE;
+ }
}
return FALSE;
for (i = 0; i < aop1->size; i++)
if (aop1->aopu.aop_reg[i] !=
- aop2->aopu.aop_reg[i])
+ aop2->aopu.aop_reg[i])
return FALSE;
return TRUE;
{
/* rematerialize it NOW */
if (sym->remat)
- {
- sym->aop = op->aop = aop =
- aopForRemat (sym);
- aop->size = getSize (sym->type);
- return;
- }
+ {
+ sym->aop = op->aop = aop =
+ aopForRemat (sym);
+ aop->size = getSize (sym->type);
+ return;
+ }
if (sym->ruonly)
- {
- int i;
- aop = op->aop = sym->aop = newAsmop (AOP_STR);
- aop->size = getSize (sym->type);
- for (i = 0; i < 4; i++)
- aop->aopu.aop_str[i] = _fReturn[i];
- return;
- }
+ {
+ int i;
+ aop = op->aop = sym->aop = newAsmop (AOP_STR);
+ aop->size = getSize (sym->type);
+ for (i = 0; i < 4; i++)
+ aop->aopu.aop_str[i] = _fReturn[i];
+ return;
+ }
if (sym->accuse)
- {
- if (sym->accuse == ACCUSE_A)
- {
- aop = op->aop = sym->aop = newAsmop (AOP_ACC);
- aop->size = getSize (sym->type);
+ {
+ if (sym->accuse == ACCUSE_A)
+ {
+ aop = op->aop = sym->aop = newAsmop (AOP_ACC);
+ aop->size = getSize (sym->type);
wassertl(aop->size == 1, "Internal error: Caching in A, but too big to fit in A");
aop->aopu.aop_str[0] = _pairs[PAIR_AF].h;
- }
- else if (sym->accuse == ACCUSE_SCRATCH)
- {
- aop = op->aop = sym->aop = newAsmop (AOP_HLREG);
- aop->size = getSize (sym->type);
+ }
+ else if (sym->accuse == ACCUSE_SCRATCH)
+ {
+ aop = op->aop = sym->aop = newAsmop (AOP_HLREG);
+ aop->size = getSize (sym->type);
wassertl(aop->size <= 2, "Internal error: Caching in HL, but too big to fit in HL");
aop->aopu.aop_str[0] = _pairs[PAIR_HL].l;
aop->aopu.aop_str[1] = _pairs[PAIR_HL].h;
- }
+ }
else if (sym->accuse == ACCUSE_IY)
{
- aop = op->aop = sym->aop = newAsmop (AOP_HLREG);
- aop->size = getSize (sym->type);
+ aop = op->aop = sym->aop = newAsmop (AOP_HLREG);
+ aop->size = getSize (sym->type);
wassertl(aop->size <= 2, "Internal error: Caching in IY, but too big to fit in IY");
aop->aopu.aop_str[0] = _pairs[PAIR_IY].l;
aop->aopu.aop_str[1] = _pairs[PAIR_IY].h;
}
- else
+ else
{
wassertl (0, "Marked as being allocated into A or HL but is actually in neither");
}
- return;
- }
+ return;
+ }
if (sym->usl.spillLoc)
{
- if (getSize(sym->type) != getSize(sym->usl.spillLoc->type))
+ if (getSize(sym->type) != getSize(sym->usl.spillLoc->type))
{
- /* force a new aop if sizes differ */
- sym->usl.spillLoc->aop = NULL;
- }
- sym->aop = op->aop = aop =
- aopForSym (ic, sym->usl.spillLoc, result, requires_a);
- aop->size = getSize (sym->type);
- return;
- }
-
+ /* force a new aop if sizes differ */
+ sym->usl.spillLoc->aop = NULL;
+ }
+ sym->aop = op->aop = aop =
+ aopForSym (ic, sym->usl.spillLoc, result, requires_a);
+ aop->size = getSize (sym->type);
+ return;
+ }
+
/* else must be a dummy iTemp */
sym->aop = op->aop = aop = newAsmop (AOP_DUMMY);
aop->size = getSize (sym->type);
{
op->aop = NULL;
if (IS_SYMOP (op))
- {
- OP_SYMBOL (op)->aop = NULL;
- /* if the symbol has a spill */
- if (SPIL_LOC (op))
- SPIL_LOC (op)->aop = NULL;
- }
+ {
+ OP_SYMBOL (op)->aop = NULL;
+ /* if the symbol has a spill */
+ if (SPIL_LOC (op))
+ SPIL_LOC (op)->aop = NULL;
+ }
}
}
/* PENDING: for re-target */
if (with_hash)
{
- tsprintf (buffer, sizeof(buffer),
- "!hashedstr + %d", aop->aopu.aop_immd, offset);
+ tsprintf (buffer, sizeof(buffer),
+ "!hashedstr + %d", aop->aopu.aop_immd, offset);
}
else if (offset == 0)
{
tsprintf (buffer, sizeof(buffer),
- "%s", aop->aopu.aop_immd);
+ "%s", aop->aopu.aop_immd);
}
else
{
- tsprintf (buffer, sizeof(buffer),
- "%s + %d", aop->aopu.aop_immd, offset);
+ tsprintf (buffer, sizeof(buffer),
+ "%s + %d", aop->aopu.aop_immd, offset);
}
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
case AOP_LIT:
{
- value *val = aop->aopu.aop_lit;
- /* if it is a float then it gets tricky */
- /* otherwise it is fairly simple */
- if (!IS_FLOAT (val->type))
- {
- unsigned long v = (unsigned long) floatFromVal (val);
-
- if (offset == 2)
+ value *val = aop->aopu.aop_lit;
+ /* if it is a float then it gets tricky */
+ /* otherwise it is fairly simple */
+ if (!IS_FLOAT (val->type))
+ {
+ unsigned long v = (unsigned long) floatFromVal (val);
+
+ if (offset == 2)
{
v >>= 16;
}
{
// OK
}
- else
+ else
{
wassertl(0, "Encountered an invalid offset while fetching a literal");
}
- if (with_hash)
- tsprintf (buffer, sizeof(buffer), "!immedword", v);
- else
- tsprintf (buffer, sizeof(buffer), "!constword", v);
+ if (with_hash)
+ tsprintf (buffer, sizeof(buffer), "!immedword", v);
+ else
+ tsprintf (buffer, sizeof(buffer), "!constword", v);
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
- }
- else
- {
+ }
+ else
+ {
union {
float f;
unsigned char c[4];
#else
i = fl.c[offset] | (fl.c[offset+1]<<8);
#endif
- if (with_hash)
- tsprintf (buffer, sizeof(buffer), "!immedword", i);
- else
- tsprintf (buffer, sizeof(buffer), "!constword", i);
+ if (with_hash)
+ tsprintf (buffer, sizeof(buffer), "!immedword", i);
+ else
+ tsprintf (buffer, sizeof(buffer), "!constword", i);
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
- }
+ }
}
default:
return NULL;
if (isPtr (pair))
{
if (pairId == PAIR_HL || pairId == PAIR_IY)
- {
- if (_G.pairs[pairId].last_type == left->type)
- {
- if (_G.pairs[pairId].base && !strcmp (_G.pairs[pairId].base, base))
- {
- if (pairId == PAIR_HL && abs (_G.pairs[pairId].offset - offset) < 3)
- {
- adjustPair (pair, &_G.pairs[pairId].offset, offset);
- return;
- }
- if (pairId == PAIR_IY && (offset >= INT8MIN && offset <= INT8MAX))
- {
- return;
- }
- }
- }
- }
+ {
+ if (_G.pairs[pairId].last_type == left->type)
+ {
+ if (_G.pairs[pairId].base && !strcmp (_G.pairs[pairId].base, base))
+ {
+ if (pairId == PAIR_HL && abs (_G.pairs[pairId].offset - offset) < 3)
+ {
+ adjustPair (pair, &_G.pairs[pairId].offset, offset);
+ return;
+ }
+ if (pairId == PAIR_IY && (offset >= INT8MIN && offset <= INT8MAX))
+ {
+ return;
+ }
+ }
+ }
+ }
_G.pairs[pairId].last_type = left->type;
_G.pairs[pairId].base = traceAlloc(&_G.trace.aops, Safe_strdup (base));
_G.pairs[pairId].offset = offset;
if (isLitWord (aop)) {
fetchLitPair (pairId, aop, offset);
}
- else
+ else
{
if (getPairId (aop) == pairId)
{
emit2("push %s", _pairs[getPairId(aop)].name);
emit2("pop %s", _pairs[pairId].name);
}
- else
+ else
{
emit2 ("ld %s,%s", _pairs[pairId].l, aopGet (aop, offset, FALSE));
emit2 ("ld %s,%s", _pairs[pairId].h, aopGet (aop, offset + 1, FALSE));
_push (PAIR_AF);
offset += 2;
}
-
+
if (offset < INT8MIN || offset > INT8MAX)
{
emit2 ("ld hl,!immedword", offset);
case AOP_HL:
wassertl (pairId == PAIR_HL, "AOP_HL must be in HL");
-
+
fetchLitPair (pairId, aop, offset);
_G.pairs[pairId].offset = offset;
break;
wassertl (pairId == PAIR_IY || pairId == PAIR_HL, "The Z80 extended stack must be in IY or HL");
{
- int offset = aop->aopu.aop_stk + _G.stack.offset;
+ int offset = aop->aopu.aop_stk + _G.stack.offset;
if (_G.pairs[pairId].last_type == aop->type &&
_G.pairs[pairId].offset == offset)
case AOP_STK:
{
- /* Doesnt include _G.stack.pushed */
- int abso = aop->aopu.aop_stk + offset + _G.stack.offset;
-
- if (aop->aopu.aop_stk > 0)
- {
- abso += _G.stack.param_offset;
- }
- assert (pairId == PAIR_HL);
- /* In some cases we can still inc or dec hl */
- if (_G.pairs[pairId].last_type == AOP_STK && abs (_G.pairs[pairId].offset - abso) < 3)
- {
- adjustPair (_pairs[pairId].name, &_G.pairs[pairId].offset, abso);
- }
- else
- {
+ /* Doesnt include _G.stack.pushed */
+ int abso = aop->aopu.aop_stk + offset + _G.stack.offset;
+
+ if (aop->aopu.aop_stk > 0)
+ {
+ abso += _G.stack.param_offset;
+ }
+ assert (pairId == PAIR_HL);
+ /* In some cases we can still inc or dec hl */
+ if (_G.pairs[pairId].last_type == AOP_STK && abs (_G.pairs[pairId].offset - abso) < 3)
+ {
+ adjustPair (_pairs[pairId].name, &_G.pairs[pairId].offset, abso);
+ }
+ else
+ {
setupPairFromSP (PAIR_HL, abso + _G.stack.pushed);
- }
- _G.pairs[pairId].offset = abso;
- break;
+ }
+ _G.pairs[pairId].offset = abso;
+ break;
}
case AOP_PAIRPTR:
genMovePairPair(aop->aopu.aop_pairId, pairId);
adjustPair (_pairs[pairId].name, &_G.pairs[pairId].offset, offset);
break;
-
+
default:
wassert (0);
}
/* offset is greater than size then zero */
/* PENDING: this seems a bit screwed in some pointer cases. */
if (offset > (aop->size - 1) &&
- aop->type != AOP_LIT)
+ aop->type != AOP_LIT)
{
tsprintf (buffer, sizeof(buffer), "!zero");
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
case AOP_DUMMY:
tsprintf (buffer, sizeof(buffer), "!zero");
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
-
+
case AOP_IMMD:
/* PENDING: re-target */
if (bit16)
- tsprintf (buffer, sizeof(buffer), "!immedwords", aop->aopu.aop_immd);
+ tsprintf (buffer, sizeof(buffer), "!immedwords", aop->aopu.aop_immd);
else
- switch (offset)
- {
- case 2:
- tsprintf (buffer, sizeof(buffer), "!bankimmeds", aop->aopu.aop_immd);
- break;
- case 1:
- tsprintf (buffer, sizeof(buffer), "!msbimmeds", aop->aopu.aop_immd);
- break;
- case 0:
- tsprintf (buffer, sizeof(buffer), "!lsbimmeds", aop->aopu.aop_immd);
- break;
- default:
- wassertl (0, "Fetching from beyond the limits of an immediate value.");
- }
+ switch (offset)
+ {
+ case 2:
+ tsprintf (buffer, sizeof(buffer), "!bankimmeds", aop->aopu.aop_immd);
+ break;
+ case 1:
+ tsprintf (buffer, sizeof(buffer), "!msbimmeds", aop->aopu.aop_immd);
+ break;
+ case 0:
+ tsprintf (buffer, sizeof(buffer), "!lsbimmeds", aop->aopu.aop_immd);
+ break;
+ default:
+ wassertl (0, "Fetching from beyond the limits of an immediate value.");
+ }
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
{ /*.p.t.20030716 handling for i/o port read access for Z80 */
if( aop->paged )
{ /* banked mode */
- /* reg A goes to address bits 15-8 during "in a,(x)" instruction */
- emit2( "ld a,!msbimmeds", aop->aopu.aop_dir);
- emit2( "in a,(!lsbimmeds)", aop->aopu.aop_dir);
+ /* reg A goes to address bits 15-8 during "in a,(x)" instruction */
+ emit2( "ld a,!msbimmeds", aop->aopu.aop_dir);
+ emit2( "in a,(!lsbimmeds)", aop->aopu.aop_dir);
}
else if( z80_opts.port_mode == 180 )
{ /* z180 in0/out0 mode */
{ /* 8 bit mode */
emit2( "in a,(%s)", aop->aopu.aop_dir );
}
-
+
SNPRINTF (buffer, sizeof(buffer), "a");
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
case AOP_STK:
if (IS_GB)
- {
- setupPair (PAIR_HL, aop, offset);
- tsprintf (buffer, sizeof(buffer), "!*hl");
- }
+ {
+ setupPair (PAIR_HL, aop, offset);
+ tsprintf (buffer, sizeof(buffer), "!*hl");
+ }
else
- {
- if (aop->aopu.aop_stk >= 0)
- offset += _G.stack.param_offset;
- tsprintf (buffer, sizeof(buffer),
- "!*ixx", aop->aopu.aop_stk + offset);
- }
+ {
+ if (aop->aopu.aop_stk >= 0)
+ offset += _G.stack.param_offset;
+ tsprintf (buffer, sizeof(buffer),
+ "!*ixx", aop->aopu.aop_stk + offset);
+ }
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
case AOP_ACC:
if (!offset)
- {
- return "a";
- }
+ {
+ return "a";
+ }
else
{
tsprintf(buffer, sizeof(buffer), "!zero");
case AOP_SIMPLELIT:
{
unsigned long v = aop->aopu.aop_simplelit;
-
+
v >>= (offset * 8);
- tsprintf (buffer, sizeof(buffer),
- "!immedbyte", (unsigned int) v & 0xff);
-
+ tsprintf (buffer, sizeof(buffer),
+ "!immedbyte", (unsigned int) v & 0xff);
+
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
}
case AOP_STR:
case AOP_PAIRPTR:
setupPair (aop->aopu.aop_pairId, aop, offset);
if (aop->aopu.aop_pairId==PAIR_IX)
- SNPRINTF (buffer, sizeof(buffer),
- "!*ixx", 0);
+ SNPRINTF (buffer, sizeof(buffer),
+ "!*ixx", 0);
else if (aop->aopu.aop_pairId==PAIR_IY)
- SNPRINTF (buffer, sizeof(buffer),
- "!*iyx", 0);
+ SNPRINTF (buffer, sizeof(buffer),
+ "!*iyx", 0);
else
- SNPRINTF (buffer, sizeof(buffer),
- "(%s)", _pairs[aop->aopu.aop_pairId].name);
+ SNPRINTF (buffer, sizeof(buffer),
+ "(%s)", _pairs[aop->aopu.aop_pairId].name);
return traceAlloc(&_G.trace.aops, Safe_strdup(buffer));
if (aop->size && offset > (aop->size - 1))
{
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut got offset > aop->size");
+ "aopPut got offset > aop->size");
exit (0);
}
case AOP_DUMMY:
_moveA (s); /* in case s is volatile */
break;
-
+
case AOP_DIR:
/* Direct. Hmmm. */
wassert (IS_GB);
if (strcmp (s, "a"))
- emit2 ("ld a,%s", s);
+ emit2 ("ld a,%s", s);
emit2 ("ld (%s+%d),a", aop->aopu.aop_dir, offset);
break;
emit2( "ld a,%s", s );
s = "a";
}
-
+
emit2( "ld bc,#%s", aop->aopu.aop_dir );
emit2( "out (c),%s", s );
-
+
if( aop->bcInUse )
emit2( "pop bc" );
else
case AOP_REG:
if (!strcmp (s, "!*hl"))
- emit2 ("ld %s,!*hl", aop->aopu.aop_reg[offset]->name);
+ emit2 ("ld %s,!*hl", aop->aopu.aop_reg[offset]->name);
else
- emit2 ("ld %s,%s",
- aop->aopu.aop_reg[offset]->name, s);
+ emit2 ("ld %s,%s",
+ aop->aopu.aop_reg[offset]->name, s);
spillPairReg(aop->aopu.aop_reg[offset]->name);
break;
case AOP_IY:
wassert (!IS_GB);
if (!canAssignToPtr (s))
- {
- emit2 ("ld a,%s", s);
+ {
+ emit2 ("ld a,%s", s);
setupPair (PAIR_IY, aop, offset);
- emit2 ("ld !*iyx,a", offset);
- }
+ emit2 ("ld !*iyx,a", offset);
+ }
else
{
setupPair (PAIR_IY, aop, offset);
wassert (IS_GB);
/* PENDING: for re-target */
if (!strcmp (s, "!*hl") || !strcmp (s, "(hl)") || !strcmp (s, "[hl]"))
- {
- emit2 ("ld a,!*hl");
- s = "a";
- }
+ {
+ emit2 ("ld a,!*hl");
+ s = "a";
+ }
setupPair (PAIR_HL, aop, offset);
emit2 ("ld !*hl,%s", s);
case AOP_EXSTK:
wassert (!IS_GB);
if (!canAssignToPtr (s))
- {
- emit2 ("ld a,%s", s);
+ {
+ emit2 ("ld a,%s", s);
setupPair (PAIR_IY, aop, offset);
- emit2 ("ld !*iyx,a", offset);
- }
+ emit2 ("ld !*iyx,a", offset);
+ }
else
{
setupPair (PAIR_IY, aop, offset);
case AOP_STK:
if (IS_GB)
- {
- /* PENDING: re-target */
- if (!strcmp (s, "!*hl") || !strcmp (s, "(hl)") || !strcmp (s, "[hl]"))
- {
- emit2 ("ld a,!*hl");
- s = "a";
- }
- setupPair (PAIR_HL, aop, offset);
- if (!canAssignToPtr (s))
- {
- emit2 ("ld a,%s", s);
- emit2 ("ld !*hl,a");
- }
- else
- emit2 ("ld !*hl,%s", s);
- }
+ {
+ /* PENDING: re-target */
+ if (!strcmp (s, "!*hl") || !strcmp (s, "(hl)") || !strcmp (s, "[hl]"))
+ {
+ emit2 ("ld a,!*hl");
+ s = "a";
+ }
+ setupPair (PAIR_HL, aop, offset);
+ if (!canAssignToPtr (s))
+ {
+ emit2 ("ld a,%s", s);
+ emit2 ("ld !*hl,a");
+ }
+ else
+ emit2 ("ld !*hl,%s", s);
+ }
else
- {
- if (aop->aopu.aop_stk >= 0)
- offset += _G.stack.param_offset;
- if (!canAssignToPtr (s))
- {
- emit2 ("ld a,%s", s);
- emit2 ("ld !*ixx,a", aop->aopu.aop_stk + offset);
- }
- else
+ {
+ if (aop->aopu.aop_stk >= 0)
+ offset += _G.stack.param_offset;
+ if (!canAssignToPtr (s))
+ {
+ emit2 ("ld a,%s", s);
+ emit2 ("ld !*ixx,a", aop->aopu.aop_stk + offset);
+ }
+ else
{
emit2 ("ld !*ixx,%s", aop->aopu.aop_stk + offset, s);
}
- }
+ }
break;
case AOP_CRY:
/* if bit variable */
if (!aop->aopu.aop_dir)
- {
- emit2 ("ld a,!zero");
- emit2 ("rla");
- }
+ {
+ emit2 ("ld a,!zero");
+ emit2 ("rla");
+ }
else
- {
- /* In bit space but not in C - cant happen */
- wassertl (0, "Tried to write into a bit variable");
- }
+ {
+ /* In bit space but not in C - cant happen */
+ wassertl (0, "Tried to write into a bit variable");
+ }
break;
case AOP_STR:
aop->coff = offset;
if (strcmp (aop->aopu.aop_str[offset], s))
- {
- emit2 ("ld %s,%s", aop->aopu.aop_str[offset], s);
- }
+ {
+ emit2 ("ld %s,%s", aop->aopu.aop_str[offset], s);
+ }
spillPairReg(aop->aopu.aop_str[offset]);
break;
case AOP_ACC:
aop->coff = offset;
if (!offset && (strcmp (s, "acc") == 0))
- break;
+ break;
if (offset > 0)
- {
+ {
wassertl (0, "Tried to access past the end of A");
- }
+ }
else
- {
- if (strcmp (aop->aopu.aop_str[offset], s))
- {
- emit2 ("ld %s,%s", aop->aopu.aop_str[offset], s);
- spillPairReg(aop->aopu.aop_str[offset]);
- }
- }
+ {
+ if (strcmp (aop->aopu.aop_str[offset], s))
+ {
+ emit2 ("ld %s,%s", aop->aopu.aop_str[offset], s);
+ spillPairReg(aop->aopu.aop_str[offset]);
+ }
+ }
break;
case AOP_HLREG:
default:
werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "aopPut got unsupported aop->type");
+ "aopPut got unsupported aop->type");
exit (0);
}
}
/*-----------------------------------------------------------------*/
static void
movLeft2Result (operand * left, int offl,
- operand * result, int offr, int sign)
+ operand * result, int offr, int sign)
{
const char *l;
l = aopGet (AOP (left), offl, FALSE);
if (!sign)
- {
- aopPut (AOP (result), l, offr);
- }
+ {
+ aopPut (AOP (result), l, offr);
+ }
else
- {
+ {
if (getDataSize (left) == offl + 1)
{
emit2 ("ld a,%s", l);
aopPut (AOP (result), "a", offr);
}
- }
+ }
}
}
static void
movLeft2ResultLong (operand * left, int offl,
- operand * result, int offr, int sign,
+ operand * result, int offr, int sign,
int size)
{
if (size == 1)
emit2 ("ld a,%s", aopGet (AOP (left), LSB, FALSE));
emit2 ("ld h,%s", aopGet (AOP (left), MSB16, FALSE));
emit2 ("ld l,a");
- spillPair (PAIR_HL);
+ spillPair (PAIR_HL);
}
else if ( getPairId ( AOP (result)) == PAIR_IY)
{
PAIR_ID id = getPairId (AOP (left));
- if (id != PAIR_INVALID)
+ if (id != PAIR_INVALID)
{
emit2("push %s", _pairs[id].name);
emit2("pop iy");
offset = 1;
/* unsigned or positive */
while (size--)
- {
- aopPut (AOP (result), "!zero", offset++);
- }
+ {
+ aopPut (AOP (result), "!zero", offset++);
+ }
}
}
emit2 ("ld a,!zero");
emit2 ("rla");
if (swap_sense)
- emit2 ("xor a,!immedbyte", 1);
+ emit2 ("xor a,!immedbyte", 1);
outAcc (result);
}
}
emit2 ("ld a,%s", aopGet (AOP (oper), offset++, FALSE));
size--;
while (size--)
- emit2 ("or a,%s", aopGet (AOP (oper), offset++, FALSE));
+ emit2 ("or a,%s", aopGet (AOP (oper), offset++, FALSE));
}
else
{
if (AOP (oper)->type != AOP_ACC)
- {
- _clearCarry();
- emit2 ("or a,%s", aopGet (AOP (oper), 0, FALSE));
- }
+ {
+ _clearCarry();
+ emit2 ("or a,%s", aopGet (AOP (oper), 0, FALSE));
+ }
}
}
emit2 ("rlc a");
emit2 ("sbc a,a");
while (size--)
- aopPut (AOP (IC_RESULT (ic)), "a", offset++);
+ aopPut (AOP (IC_RESULT (ic)), "a", offset++);
}
release:
else
{
while (size--)
- {
- aopPut (AOP (oper), _fReturn[size], size);
- }
+ {
+ aopPut (AOP (oper), _fReturn[size], size);
+ }
}
}
o Compute if DE and/or BC are used to hold the result value
o If (DE is used, or in the send set) and is not used in the result, push.
o If BC is used and is not in the result, push
- o
+ o
o If DE is used in the send set, fetch
o If HL is used in the send set, fetch
o Call
bool bcInRet = FALSE, deInRet = FALSE;
bitVect *rInUse;
- rInUse = bitVectCplAnd (bitVectCopy (ic->rMask),
+ rInUse = bitVectCplAnd (bitVectCopy (ic->rMask),
z80_rUmaskForOp (IC_RESULT(ic)));
deInUse = bitVectBitValue (rInUse, D_IDX) || bitVectBitValue(rInUse, E_IDX);
*/
int nAddSets = 0;
iCode *walk = ic->next;
-
+
while (walk) {
if (walk->op == SEND) {
nAddSets++;
else
{
if (size == 2)
- {
- fetchHL (AOP (IC_LEFT (ic)));
- emit2 ("push hl");
- spillPair (PAIR_HL);
- _G.stack.pushed += 2;
- goto release;
- }
+ {
+ fetchHL (AOP (IC_LEFT (ic)));
+ emit2 ("push hl");
+ spillPair (PAIR_HL);
+ _G.stack.pushed += 2;
+ goto release;
+ }
if (size == 4)
- {
- fetchPairLong (PAIR_HL, AOP (IC_LEFT (ic)), ic, 2);
- emit2 ("push hl");
- spillPair (PAIR_HL);
- _G.stack.pushed += 2;
- fetchPairLong (PAIR_HL, AOP (IC_LEFT (ic)), ic, 0);
- emit2 ("push hl");
- spillPair (PAIR_HL);
- _G.stack.pushed += 2;
- goto release;
- }
+ {
+ fetchPairLong (PAIR_HL, AOP (IC_LEFT (ic)), ic, 2);
+ emit2 ("push hl");
+ spillPair (PAIR_HL);
+ _G.stack.pushed += 2;
+ fetchPairLong (PAIR_HL, AOP (IC_LEFT (ic)), ic, 0);
+ emit2 ("push hl");
+ spillPair (PAIR_HL);
+ _G.stack.pushed += 2;
+ goto release;
+ }
offset = size;
while (size--)
- {
- if (AOP (IC_LEFT (ic))->type == AOP_IY)
- {
- char *l = aopGetLitWordLong (AOP (IC_LEFT (ic)), --offset, FALSE);
- wassert (l);
- emit2 ("ld a,(%s)", l);
- }
- else
- {
- l = aopGet (AOP (IC_LEFT (ic)), --offset, FALSE);
- emit2 ("ld a,%s", l);
- }
- emit2 ("push af");
- emit2 ("inc sp");
- _G.stack.pushed++;
- }
+ {
+ if (AOP (IC_LEFT (ic))->type == AOP_IY)
+ {
+ char *l = aopGetLitWordLong (AOP (IC_LEFT (ic)), --offset, FALSE);
+ wassert (l);
+ emit2 ("ld a,(%s)", l);
+ }
+ else
+ {
+ l = aopGet (AOP (IC_LEFT (ic)), --offset, FALSE);
+ emit2 ("ld a,%s", l);
+ }
+ emit2 ("push af");
+ emit2 ("inc sp");
+ _G.stack.pushed++;
+ }
}
release:
freeAsmop (IC_LEFT (ic), NULL, ic);
else
{
while (size--)
- {
- emit2 ("dec sp");
- emit2 ("pop hl");
- spillPair (PAIR_HL);
- aopPut (AOP (IC_LEFT (ic)), "l", offset--);
- }
+ {
+ emit2 ("dec sp");
+ emit2 ("pop hl");
+ spillPair (PAIR_HL);
+ aopPut (AOP (IC_LEFT (ic)), "l", offset--);
+ }
}
freeAsmop (IC_LEFT (ic), NULL, ic);
{
int i;
for (i = 0; i < aop->size; i++)
- {
- if (pairId == PAIR_DE)
- {
- emitDebug ("; name %s", aop->aopu.aop_reg[i]->name);
- if (!strcmp (aop->aopu.aop_reg[i]->name, "e"))
- ret++;
- if (!strcmp (aop->aopu.aop_reg[i]->name, "d"))
- ret++;
- }
+ {
+ if (pairId == PAIR_DE)
+ {
+ emitDebug ("; name %s", aop->aopu.aop_reg[i]->name);
+ if (!strcmp (aop->aopu.aop_reg[i]->name, "e"))
+ ret++;
+ if (!strcmp (aop->aopu.aop_reg[i]->name, "d"))
+ ret++;
+ }
else if (pairId == PAIR_BC)
{
- emitDebug ("; name %s", aop->aopu.aop_reg[i]->name);
- if (!strcmp (aop->aopu.aop_reg[i]->name, "c"))
- ret++;
- if (!strcmp (aop->aopu.aop_reg[i]->name, "b"))
- ret++;
+ emitDebug ("; name %s", aop->aopu.aop_reg[i]->name);
+ if (!strcmp (aop->aopu.aop_reg[i]->name, "c"))
+ ret++;
+ if (!strcmp (aop->aopu.aop_reg[i]->name, "b"))
+ ret++;
+ }
+ else
+ {
+ wassert (0);
}
- else
- {
- wassert (0);
- }
- }
+ }
}
freeAsmop (IC_LEFT (ic), NULL, ic);
if (ispcall)
{
if (IFFUNC_ISBANKEDCALL (dtype) && !SPEC_STAT(getSpec(dtype)))
- {
- werror (W_INDIR_BANKED);
- }
+ {
+ werror (W_INDIR_BANKED);
+ }
aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
if (isLitWord (AOP (IC_LEFT (ic))))
- {
- emit2 ("call %s", aopGetLitWordLong (AOP (IC_LEFT (ic)), 0, FALSE));
- }
+ {
+ emit2 ("call %s", aopGetLitWordLong (AOP (IC_LEFT (ic)), 0, FALSE));
+ }
else
- {
- symbol *rlbl = newiTempLabel (NULL);
- spillPair (PAIR_HL);
- emit2 ("ld hl,!immed!tlabel", (rlbl->key + 100));
- emit2 ("push hl");
- _G.stack.pushed += 2;
-
- fetchHL (AOP (IC_LEFT (ic)));
- emit2 ("jp !*hl");
- emit2 ("!tlabeldef", (rlbl->key + 100));
- _G.stack.pushed -= 2;
- }
+ {
+ symbol *rlbl = newiTempLabel (NULL);
+ spillPair (PAIR_HL);
+ emit2 ("ld hl,!immed!tlabel", (rlbl->key + 100));
+ emit2 ("push hl");
+ _G.stack.pushed += 2;
+
+ fetchHL (AOP (IC_LEFT (ic)));
+ emit2 ("jp !*hl");
+ emit2 ("!tlabeldef", (rlbl->key + 100));
+ _G.stack.pushed -= 2;
+ }
freeAsmop (IC_LEFT (ic), NULL, ic);
}
else
OP_SYMBOL (IC_LEFT (ic))->rname :
OP_SYMBOL (IC_LEFT (ic))->name;
if (IFFUNC_ISBANKEDCALL (dtype) && !SPEC_STAT(getSpec(dtype)))
- {
- emit2 ("call banked_call");
- emit2 ("!dws", name);
- emit2 ("!dw !bankimmeds", name);
- }
+ {
+ emit2 ("call banked_call");
+ emit2 ("!dws", name);
+ emit2 ("!dw !bankimmeds", name);
+ }
else
- {
- /* make the call */
- emit2 ("call %s", name);
- }
+ {
+ /* make the call */
+ emit2 ("call %s", name);
+ }
}
spillCached ();
/* if we need assign a result value */
if ((IS_ITEMP (IC_RESULT (ic)) &&
(OP_SYMBOL (IC_RESULT (ic))->nRegs ||
- OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
+ OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
IS_TRUE_SYMOP (IC_RESULT (ic)))
{
_G.stack.pushed -= i;
if (IS_GB)
- {
- emit2 ("!ldaspsp", i);
- }
+ {
+ emit2 ("!ldaspsp", i);
+ }
else
- {
- spillCached ();
- if (i > 8)
- {
- emit2 ("ld iy,!immedword", i);
- emit2 ("add iy,sp");
- emit2 ("ld sp,iy");
- }
- else
- {
- while (i > 1)
- {
- emit2 ("pop af");
- i -= 2;
- }
- if (i)
+ {
+ spillCached ();
+ if (i > 8)
+ {
+ emit2 ("ld iy,!immedword", i);
+ emit2 ("add iy,sp");
+ emit2 ("ld sp,iy");
+ }
+ else
+ {
+ while (i > 1)
+ {
+ emit2 ("pop af");
+ i -= 2;
+ }
+ if (i)
{
emit2 ("inc sp");
}
- }
- }
+ }
+ }
}
spillCached ();
eInRet = FALSE;
}
- if (_G.stack.pushedDE)
+ if (_G.stack.pushedDE)
{
if (dInRet && eInRet)
{
}
_G.stack.pushedDE = FALSE;
}
-
- if (_G.stack.pushedBC)
+
+ if (_G.stack.pushedBC)
{
if (bInRet && cInRet)
{
{
symbol *sym = OP_SYMBOL (IC_RESULT (ic));
if (sym->remat && !POINTER_SET (ic))
- return 1;
+ return 1;
}
return 0;
genFunction (iCode * ic)
{
bool stackParm;
-
+
symbol *sym = OP_SYMBOL (IC_LEFT (ic));
sym_link *ftype;
setArea (IFFUNC_NONBANKED (sym->type));
- /* PENDING: Reset the receive offset as it doesn't seem to get reset anywhere
- else.
+ /* PENDING: Reset the receive offset as it
+ doesn't seem to get reset anywhere else.
*/
_G.receiveOffset = 0;
/* Record the last function name for debugging. */
_G.lastFunctionName = sym->rname;
-
+
/* Create the function header */
emit2 ("!functionheader", sym->name);
if (!IS_STATIC(sym->etype))
}
emit2 ("!functionlabeldef", sym->rname);
- if (options.profile)
+ ftype = operandType (IC_LEFT (ic));
+
+ if (IFFUNC_ISNAKED(ftype))
{
- emit2 ("!profileenter");
+ emitDebug("; naked function: no prologue.");
+ return;
}
- ftype = operandType (IC_LEFT (ic));
-
- /* if this is an interrupt service routine then save all potentially used registers. */
+ /* if this is an interrupt service routine
+ then save all potentially used registers. */
if (IFFUNC_ISISR (sym->type))
{
- if (!FUNC_ISNAKED( sym->type ))
+ /* If critical function then turn interrupts off */
+ /* except when no interrupt number is given then it implies the NMI handler */
+ if (IFFUNC_ISCRITICAL (sym->type) && (FUNC_INTNO(sym->type) != INTNO_UNSPEC))
{
- emit2 ("!pusha");
- }
+ emit2 ("!di");
+ }
+
+ emit2 ("!pusha");
}
else
{
- /* if critical function then turn interrupts off */
+ /* This is a non-ISR function.
+ If critical function then turn interrupts off */
if (IFFUNC_ISCRITICAL (sym->type))
{
- emit2 ("!di");
- }
+ if (IS_GB)
+ {
+ emit2 ("!di");
+ }
+ else
+ {
+ //get interrupt enable flag IFF2 into P/O
+ emit2 ("ld a,i");
+ emit2 ("!di");
+ //save P/O flag
+ emit2 ("push af");
+ }
+ }
+ }
+
+ if (options.profile)
+ {
+ emit2 ("!profileenter");
}
/* PENDING: callee-save etc */
{
int i;
for (i = 0; i < sym->regsUsed->size; i++)
- {
- if (bitVectBitValue (sym->regsUsed, i))
- {
- switch (i)
- {
- case C_IDX:
- case B_IDX:
+ {
+ if (bitVectBitValue (sym->regsUsed, i))
+ {
+ switch (i)
+ {
+ case C_IDX:
+ case B_IDX:
bcInUse = TRUE;
- break;
- case D_IDX:
- case E_IDX:
- if (IS_Z80) {
+ break;
+ case D_IDX:
+ case E_IDX:
+ if (IS_Z80) {
deInUse = TRUE;
}
else {
/* Other systems use DE as a temporary. */
}
- break;
- }
- }
- }
+ break;
+ }
+ }
+ }
}
- if (bcInUse)
+ if (bcInUse)
{
emit2 ("push bc");
_G.stack.param_offset += 2;
/* adjust the stack for the function */
_G.stack.last = sym->stack;
-
+
stackParm = FALSE;
for (sym = setFirstItem (istack->syms); sym;
sym = setNextItem (istack->syms))
}
}
sym = OP_SYMBOL (IC_LEFT (ic));
-
+
_G.omitFramePtr = options.ommitFramePtr;
if (IS_Z80 && !stackParm && !sym->stack)
{
emit2 ("!enterxl", sym->stack);
else if (sym->stack)
emit2 ("!enterx", sym->stack);
- else if( !FUNC_ISNAKED( sym->type )) /*.p.t.20030716 - now supporting Naked funcitons */
+ else
emit2 ("!enter");
_G.stack.offset = sym->stack;
{
symbol *sym = OP_SYMBOL (IC_LEFT (ic));
+ if (IFFUNC_ISNAKED(sym->type))
+ {
+ emitDebug("; naked function: no epilogue.");
+ return;
+ }
/* PENDING: calleeSave */
if (IS_Z80 && _G.omitFramePtr)
{
emit2 ("!leavex", _G.stack.offset);
}
- else if( !FUNC_ISNAKED( sym->type )) /*.p.t.20030716 - now supporting Naked funcitons */
+ else
{
emit2 ("!leave");
}
-
- if (_G.calleeSaves.pushedDE)
+
+ if (_G.calleeSaves.pushedDE)
{
emit2 ("pop de");
_G.calleeSaves.pushedDE = FALSE;
}
- if (_G.calleeSaves.pushedBC)
+ if (_G.calleeSaves.pushedBC)
{
emit2 ("pop bc");
_G.calleeSaves.pushedBC = FALSE;
}
- if (options.profile)
+ if (options.profile)
{
emit2 ("!profileexit");
}
- /* if this is an interrupt service routine then restore all potentially used registers. */
+ /* if this is an interrupt service routine
+ then save all potentially used registers. */
if (IFFUNC_ISISR (sym->type))
{
- if (!FUNC_ISNAKED( sym->type ))
+ emit2 ("!popa");
+
+ /* If critical function then turn interrupts back on */
+ /* except when no interrupt number is given then it implies the NMI handler */
+ if (IFFUNC_ISCRITICAL (sym->type) && (FUNC_INTNO(sym->type) != INTNO_UNSPEC))
{
- emit2 ("!popa");
+ emit2 ("!ei");
}
}
else
{
- /* if critical function then turn interrupts back on */
+ /* This is a non-ISR function.
+ If critical function then turn interrupts back on */
if (IFFUNC_ISCRITICAL (sym->type))
- emit2 ("!ei");
+ {
+ if (IS_GB)
+ {
+ emit2 ("!ei");
+ }
+ else
+ {
+ symbol *tlbl = newiTempLabel (NULL);
+ //restore P/O flag
+ emit2 ("pop af");
+ //parity odd <==> P/O=0 <==> interrupt enable flag IFF2 was 0 <==>
+ //don't enable interrupts as they were off before
+ emit2 ("jp po,!tlabel", tlbl->key + 100);
+ emit2 ("!ei");
+ emit2 ("!tlabeldef", (tlbl->key + 100));
+ }
+ }
}
if (options.debug && currFunc)
{
debugFile->writeEndFunction (currFunc, ic, 1);
}
-
+
if (IFFUNC_ISISR (sym->type))
{
/* "critical interrupt" is used to imply NMI handler */
- if (IS_Z80 && IFFUNC_ISCRITICAL (sym->type))
+ if (IS_Z80 && IFFUNC_ISCRITICAL (sym->type) && FUNC_INTNO(sym->type) == INTNO_UNSPEC)
emit2 ("retn");
else
emit2 ("reti");
/* Both banked and non-banked just ret */
emit2 ("ret");
}
-
+
if (!IS_STATIC(sym->etype))
{
sprintf (buffer, "%s_end", sym->rname);
emit2 ("!labeldef", buffer);
}
-
+
_G.flushStatics = 1;
_G.stack.pushed = 0;
_G.stack.offset = 0;
aopDump("IC_LEFT", AOP(IC_LEFT(ic)));
- #if 0
+ #if 0
if ((size == 2) && ((l = aopGetWord (AOP (IC_LEFT (ic)), 0))))
{
if (IS_GB)
- {
- emit2 ("ld de,%s", l);
- }
+ {
+ emit2 ("ld de,%s", l);
+ }
else
- {
- emit2 ("ld hl,%s", l);
- }
+ {
+ emit2 ("ld hl,%s", l);
+ }
}
#endif
if (size==2)
else
{
if (IS_GB && size == 4 && requiresHL (AOP (IC_LEFT (ic))))
- {
- fetchPair (PAIR_DE, AOP (IC_LEFT (ic)));
- fetchPairLong (PAIR_HL, AOP (IC_LEFT (ic)), ic, 2);
- }
+ {
+ fetchPair (PAIR_DE, AOP (IC_LEFT (ic)));
+ fetchPairLong (PAIR_HL, AOP (IC_LEFT (ic)), ic, 2);
+ }
else
- {
- while (size--)
- {
- l = aopGet (AOP (IC_LEFT (ic)), offset,
- FALSE);
- if (strcmp (_fReturn[offset], l))
- emit2 ("ld %s,%s", _fReturn[offset], l);
+ {
+ while (size--)
+ {
+ l = aopGet (AOP (IC_LEFT (ic)), offset,
+ FALSE);
+ if (strcmp (_fReturn[offset], l))
+ emit2 ("ld %s,%s", _fReturn[offset], l);
offset++;
- }
- }
+ }
+ }
}
freeAsmop (IC_LEFT (ic), NULL, ic);
/* generate a jump to the return label
if the next is not the return statement */
if (!(ic->next && ic->next->op == LABEL &&
- IC_LABEL (ic->next) == returnLabel))
+ IC_LABEL (ic->next) == returnLabel))
emit2 ("jp !tlabel", returnLabel->key + 100);
}
if (resultId != PAIR_INVALID)
{
if (isLitWord (AOP (IC_LEFT (ic))))
- {
+ {
fetchLitPair (getPairId (AOP (IC_RESULT (ic))), AOP (IC_LEFT (ic)), icount);
- return TRUE;
- }
+ return TRUE;
+ }
if (isPair (AOP (IC_LEFT (ic))) && resultId == PAIR_HL && icount > 2)
- {
+ {
if (getPairId (AOP (IC_LEFT (ic))) == PAIR_HL)
{
PAIR_ID freep = getFreePairId (ic);
emit2 ("add hl,%s", getPairName (AOP (IC_LEFT (ic))));
return TRUE;
}
- }
+ }
if (icount > 5)
- return FALSE;
+ return FALSE;
/* Inc a pair */
if (!sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
- {
- if (icount > 2)
- return FALSE;
- movLeft2ResultLong (IC_LEFT (ic), 0, IC_RESULT (ic), 0, 0, 2);
- }
+ {
+ if (icount > 2)
+ return FALSE;
+ movLeft2ResultLong (IC_LEFT (ic), 0, IC_RESULT (ic), 0, 0, 2);
+ }
while (icount--)
- {
- emit2 ("inc %s", getPairName (AOP (IC_RESULT (ic))));
- }
+ {
+ emit2 ("inc %s", getPairName (AOP (IC_RESULT (ic))));
+ }
return TRUE;
}
symbol *tlbl = NULL;
tlbl = newiTempLabel (NULL);
while (size--)
- {
- emit2 ("inc %s", aopGet (AOP (IC_RESULT (ic)), offset++, FALSE));
- if (size)
- {
- emit2 ("!shortjp nz,!tlabel", tlbl->key + 100);
- }
- }
+ {
+ emit2 ("inc %s", aopGet (AOP (IC_RESULT (ic)), offset++, FALSE));
+ if (size)
+ {
+ emit2 ("!shortjp nz,!tlabel", tlbl->key + 100);
+ }
+ }
emitLabel (tlbl->key + 100);
return TRUE;
}
wassertl (IS_Z80, "Only implemented for the Z80");
// wassertl (aop->type == AOP_EXSTK, "Only implemented for EXSTK");
- switch (idx)
+ switch (idx)
{
case 0:
id = PAIR_HL;
_G.pairs[id].last_type = aop->type;
}
-static void
+static void
setupToPreserveCarry (asmop *result, asmop *left, asmop *right)
{
wassert (left && right);
if (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT && AOP_TYPE(IC_RIGHT(ic)) == AOP_LIT &&
left && right)
- {
- /* It's a pair */
- /* PENDING: fix */
- char buffer[100];
- sprintf (buffer, "#(%s + %s)", left, right);
- emit2 ("ld %s,%s", getPairName (AOP (IC_RESULT (ic))), buffer);
- goto release;
- }
+ {
+ /* It's a pair */
+ /* PENDING: fix */
+ char buffer[100];
+ sprintf (buffer, "#(%s + %s)", left, right);
+ emit2 ("ld %s,%s", getPairName (AOP (IC_RESULT (ic))), buffer);
+ goto release;
+ }
}
if ((isPair (AOP (IC_RIGHT (ic))) || isPair (AOP (IC_LEFT (ic)))) && getPairId (AOP (IC_RESULT (ic))) == PAIR_HL)
PAIR_ID right = getPairId (AOP (IC_RIGHT (ic)));
spillPair (PAIR_HL);
-
+
if (left == PAIR_HL && right != PAIR_INVALID)
{
emit2 ("add hl,%s", _pairs[right].name);
goto release;
}
else if (left != PAIR_INVALID && left != PAIR_HL)
- {
+ {
fetchPair (PAIR_HL, AOP (IC_RIGHT (ic)));
emit2 ("add hl,%s", getPairName (AOP (IC_LEFT (ic))));
goto release;
if (IS_GB)
{
if (AOP_TYPE (IC_LEFT (ic)) == AOP_STK ||
- AOP_TYPE (IC_RIGHT (ic)) == AOP_STK ||
- AOP_TYPE (IC_RESULT (ic)) == AOP_STK)
- {
- if ((AOP_SIZE (IC_LEFT (ic)) == 2 ||
- AOP_SIZE (IC_RIGHT (ic)) == 2) &&
- (AOP_SIZE (IC_LEFT (ic)) <= 2 &&
- AOP_SIZE (IC_RIGHT (ic)) <= 2))
- {
- if (getPairId (AOP (IC_RIGHT (ic))) == PAIR_BC)
- {
- /* Swap left and right */
- operand *t = IC_RIGHT (ic);
- IC_RIGHT (ic) = IC_LEFT (ic);
- IC_LEFT (ic) = t;
- }
- if (getPairId (AOP (IC_LEFT (ic))) == PAIR_BC)
- {
- fetchPair (PAIR_HL, AOP (IC_RIGHT (ic)));
- emit2 ("add hl,bc");
- }
- else
- {
- fetchPair (PAIR_DE, AOP (IC_LEFT (ic)));
- fetchPair (PAIR_HL, AOP (IC_RIGHT (ic)));
- emit2 ("add hl,de");
- }
- commitPair (AOP (IC_RESULT (ic)), PAIR_HL);
- goto release;
- }
- }
+ AOP_TYPE (IC_RIGHT (ic)) == AOP_STK ||
+ AOP_TYPE (IC_RESULT (ic)) == AOP_STK)
+ {
+ if ((AOP_SIZE (IC_LEFT (ic)) == 2 ||
+ AOP_SIZE (IC_RIGHT (ic)) == 2) &&
+ (AOP_SIZE (IC_LEFT (ic)) <= 2 &&
+ AOP_SIZE (IC_RIGHT (ic)) <= 2))
+ {
+ if (getPairId (AOP (IC_RIGHT (ic))) == PAIR_BC)
+ {
+ /* Swap left and right */
+ operand *t = IC_RIGHT (ic);
+ IC_RIGHT (ic) = IC_LEFT (ic);
+ IC_LEFT (ic) = t;
+ }
+ if (getPairId (AOP (IC_LEFT (ic))) == PAIR_BC)
+ {
+ fetchPair (PAIR_HL, AOP (IC_RIGHT (ic)));
+ emit2 ("add hl,bc");
+ }
+ else
+ {
+ fetchPair (PAIR_DE, AOP (IC_LEFT (ic)));
+ fetchPair (PAIR_HL, AOP (IC_RIGHT (ic)));
+ emit2 ("add hl,de");
+ }
+ commitPair (AOP (IC_RESULT (ic)), PAIR_HL);
+ goto release;
+ }
+ }
if (size == 4)
{
/* Be paranoid on the GB with 4 byte variables due to how C
goto release;
}
}
-
+
setupToPreserveCarry (AOP (IC_RESULT (ic)), AOP (IC_LEFT (ic)), AOP (IC_RIGHT (ic)));
while (size--)
{
if (AOP_TYPE (IC_LEFT (ic)) == AOP_ACC)
- {
- _moveA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE));
- if (offset == 0)
- emit2 ("add a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
- else
- emit2 ("adc a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
- }
+ {
+ _moveA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE));
+ if (offset == 0)
+ emit2 ("add a,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
+ else
+ emit2 ("adc a,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
+ }
else
- {
- _moveA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE));
- if (offset == 0)
- emit2 ("add a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
- else
- emit2 ("adc a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
- }
+ {
+ _moveA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE));
+ if (offset == 0)
+ emit2 ("add a,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
+ else
+ emit2 ("adc a,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
+ }
aopPut (AOP (IC_RESULT (ic)), "a", offset++);
}
(size > 1) && isPair (AOP (IC_RESULT (ic))))
{
while (icount--)
- emit2 ("dec %s", getPairName (AOP (IC_RESULT (ic))));
+ emit2 ("dec %s", getPairName (AOP (IC_RESULT (ic))));
return TRUE;
}
{
movLeft2ResultLong (IC_LEFT (ic), 0, IC_RESULT (ic), 0, 0, 2);
while (icount--)
- emit2 ("dec %s", getPairName (AOP (IC_RESULT (ic))));
+ emit2 ("dec %s", getPairName (AOP (IC_RESULT (ic))));
return TRUE;
}
if (sameRegs (AOP (IC_LEFT (ic)), AOP (IC_RESULT (ic))))
{
while (icount--)
- emit2 ("dec %s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE));
+ emit2 ("dec %s", aopGet (AOP (IC_RESULT (ic)), 0, FALSE));
return TRUE;
}
if (IS_GB)
{
if (AOP_TYPE (IC_LEFT (ic)) == AOP_STK ||
- AOP_TYPE (IC_RIGHT (ic)) == AOP_STK ||
- AOP_TYPE (IC_RESULT (ic)) == AOP_STK)
- {
- if ((AOP_SIZE (IC_LEFT (ic)) == 2 ||
- AOP_SIZE (IC_RIGHT (ic)) == 2) &&
- (AOP_SIZE (IC_LEFT (ic)) <= 2 &&
- AOP_SIZE (IC_RIGHT (ic)) <= 2))
- {
- PAIR_ID left = getPairId (AOP (IC_LEFT (ic)));
- PAIR_ID right = getPairId (AOP (IC_RIGHT (ic)));
-
- if (left == PAIR_INVALID && right == PAIR_INVALID)
- {
- left = PAIR_DE;
- right = PAIR_HL;
- }
- else if (right == PAIR_INVALID)
- right = PAIR_DE;
- else if (left == PAIR_INVALID)
- left = PAIR_DE;
-
- fetchPair (left, AOP (IC_LEFT (ic)));
- /* Order is important. Right may be HL */
- fetchPair (right, AOP (IC_RIGHT (ic)));
-
- emit2 ("ld a,%s", _pairs[left].l);
- emit2 ("sub a,%s", _pairs[right].l);
- emit2 ("ld e,a");
- emit2 ("ld a,%s", _pairs[left].h);
- emit2 ("sbc a,%s", _pairs[right].h);
+ AOP_TYPE (IC_RIGHT (ic)) == AOP_STK ||
+ AOP_TYPE (IC_RESULT (ic)) == AOP_STK)
+ {
+ if ((AOP_SIZE (IC_LEFT (ic)) == 2 ||
+ AOP_SIZE (IC_RIGHT (ic)) == 2) &&
+ (AOP_SIZE (IC_LEFT (ic)) <= 2 &&
+ AOP_SIZE (IC_RIGHT (ic)) <= 2))
+ {
+ PAIR_ID left = getPairId (AOP (IC_LEFT (ic)));
+ PAIR_ID right = getPairId (AOP (IC_RIGHT (ic)));
+
+ if (left == PAIR_INVALID && right == PAIR_INVALID)
+ {
+ left = PAIR_DE;
+ right = PAIR_HL;
+ }
+ else if (right == PAIR_INVALID)
+ right = PAIR_DE;
+ else if (left == PAIR_INVALID)
+ left = PAIR_DE;
+
+ fetchPair (left, AOP (IC_LEFT (ic)));
+ /* Order is important. Right may be HL */
+ fetchPair (right, AOP (IC_RIGHT (ic)));
+
+ emit2 ("ld a,%s", _pairs[left].l);
+ emit2 ("sub a,%s", _pairs[right].l);
+ emit2 ("ld e,a");
+ emit2 ("ld a,%s", _pairs[left].h);
+ emit2 ("sbc a,%s", _pairs[right].h);
if ( AOP_SIZE (IC_RESULT (ic)) > 1)
{
aopPut (AOP (IC_RESULT (ic)), "a", 1);
}
- aopPut (AOP (IC_RESULT (ic)), "e", 0);
- goto release;
- }
- }
+ aopPut (AOP (IC_RESULT (ic)), "e", 0);
+ goto release;
+ }
+ }
if (size == 4)
{
/* Be paranoid on the GB with 4 byte variables due to how C
{
_moveA (aopGet (AOP (IC_LEFT (ic)), offset, FALSE));
if (AOP_TYPE (IC_RIGHT (ic)) != AOP_LIT)
- {
- if (!offset)
- emit2 ("sub a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
- else
- emit2 ("sbc a,%s",
- aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
- }
+ {
+ if (!offset)
+ emit2 ("sub a,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
+ else
+ emit2 ("sbc a,%s",
+ aopGet (AOP (IC_RIGHT (ic)), offset, FALSE));
+ }
else
- {
- /* first add without previous c */
- if (!offset)
- emit2 ("add a,!immedbyte", (unsigned int) (lit & 0x0FFL));
- else
- emit2 ("adc a,!immedbyte", (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
- }
+ {
+ /* first add without previous c */
+ if (!offset)
+ emit2 ("add a,!immedbyte", (unsigned int) (lit & 0x0FFL));
+ else
+ emit2 ("adc a,!immedbyte", (unsigned int) ((lit >> (offset * 8)) & 0x0FFL));
+ }
aopPut (AOP (IC_RESULT (ic)), "a", offset++);
}
aopOp (IC_LEFT (ic), ic, FALSE, FALSE);
aopOp (IC_RIGHT (ic), ic, FALSE, FALSE);
aopOp (IC_RESULT (ic), ic, TRUE, FALSE);
-
+
byteResult = (AOP_SIZE (IC_RESULT (ic)) == 1);
if (AOP_SIZE (IC_LEFT (ic)) > 2 ||
emit2 ("rlc a");
emit2 ("sbc a,a");
emit2 ("ld d,a");
- }
+ }
}
else
{
{
emit2 ("ld l,e");
if (!byteResult)
- emit2 ("ld h,d");
+ emit2 ("ld h,d");
}
else
{
{
jlbl = IC_TRUE (ic);
if (!strcmp (jval, "a"))
- {
- inst = "nz";
- }
+ {
+ inst = "nz";
+ }
else if (!strcmp (jval, "c"))
- {
- inst = "c";
- }
+ {
+ inst = "c";
+ }
else if (!strcmp (jval, "nc"))
- {
- inst = "nc";
- }
+ {
+ inst = "nc";
+ }
else if (!strcmp (jval, "m"))
- {
- inst = "m";
- }
+ {
+ inst = "m";
+ }
else if (!strcmp (jval, "p"))
- {
- inst = "p";
- }
+ {
+ inst = "p";
+ }
else
- {
- /* The buffer contains the bit on A that we should test */
- inst = "nz";
- }
+ {
+ /* The buffer contains the bit on A that we should test */
+ inst = "nz";
+ }
}
else
{
/* false label is present */
jlbl = IC_FALSE (ic);
if (!strcmp (jval, "a"))
- {
- inst = "z";
- }
+ {
+ inst = "z";
+ }
else if (!strcmp (jval, "c"))
- {
- inst = "nc";
- }
+ {
+ inst = "nc";
+ }
else if (!strcmp (jval, "nc"))
- {
- inst = "c";
- }
+ {
+ inst = "c";
+ }
else if (!strcmp (jval, "m"))
- {
- inst = "p";
- }
+ {
+ inst = "p";
+ }
else if (!strcmp (jval, "p"))
- {
- inst = "m";
- }
+ {
+ inst = "m";
+ }
else
- {
- /* The buffer contains the bit on A that we should test */
- inst = "z";
- }
+ {
+ /* The buffer contains the bit on A that we should test */
+ inst = "z";
+ }
}
/* Z80 can do a conditional long jump */
if (!strcmp (jval, "a"))
#if OLD
/* if unsigned char cmp with lit, just compare */
if ((size == 1) &&
- (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR))
- {
- emit2 ("ld a,%s", aopGet (AOP (left), offset, FALSE));
- if (sign)
- {
- emit2 ("xor a,!immedbyte", 0x80);
- emit2 ("cp %s^!constbyte", aopGet (AOP (right), offset, FALSE), 0x80);
- }
- else
- emit2 ("cp %s", aopGet (AOP (right), offset, FALSE));
- }
+ (AOP_TYPE (right) == AOP_LIT && AOP_TYPE (left) != AOP_DIR))
+ {
+ emit2 ("ld a,%s", aopGet (AOP (left), offset, FALSE));
+ if (sign)
+ {
+ emit2 ("xor a,!immedbyte", 0x80);
+ emit2 ("cp %s^!constbyte", aopGet (AOP (right), offset, FALSE), 0x80);
+ }
+ else
+ emit2 ("cp %s", aopGet (AOP (right), offset, FALSE));
+ }
else if (size == 4 && IS_GB && requiresHL(AOP(right)) && requiresHL(AOP(left)))
{
// On the Gameboy we can't afford to adjust HL as it may trash the carry.
emit2 ("ld a,(de)");
emit2 ("%s a,(hl)", offset == 0 ? "sub" : "sbc");
}
-
+
if (size != 0)
{
emit2 ("inc hl");
emit2 ("ld a,(hl)");
emit2 ("%s a,%d(iy)", offset == 0 ? "sub" : "sbc", offset);
}
-
+
if (size != 0)
{
emit2 ("inc hl");
spillPair (PAIR_IY);
}
else
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
- /* optimize if(x < 0) or if(x >= 0) */
- if (lit == 0L)
- {
- if (!sign)
- {
- /* No sign so it's always false */
- _clearCarry();
- }
- else
- {
- /* Just load in the top most bit */
- _moveA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE));
- if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx)
- {
- genIfxJump (ifx, "7");
- return;
- }
- else
- emit2 ("rlc a");
- }
- goto release;
- }
- }
-
- if (sign)
- {
- /* First setup h and l contaning the top most bytes XORed */
- bool fDidXor = FALSE;
- if (AOP_TYPE (left) == AOP_LIT)
- {
- unsigned long lit = (unsigned long)
- floatFromVal (AOP (left)->aopu.aop_lit);
- emit2 ("ld %s,!immedbyte", _fTmp[0],
- 0x80 ^ (unsigned int) ((lit >> ((size - 1) * 8)) & 0x0FFL));
- }
- else
- {
- emit2 ("ld a,%s", aopGet (AOP (left), size - 1, FALSE));
- emit2 ("xor a,!immedbyte", 0x80);
- emit2 ("ld %s,a", _fTmp[0]);
- fDidXor = TRUE;
- }
- if (AOP_TYPE (right) == AOP_LIT)
- {
- unsigned long lit = (unsigned long)
- floatFromVal (AOP (right)->aopu.aop_lit);
- emit2 ("ld %s,!immedbyte", _fTmp[1],
- 0x80 ^ (unsigned int) ((lit >> ((size - 1) * 8)) & 0x0FFL));
- }
- else
- {
- emit2 ("ld a,%s", aopGet (AOP (right), size - 1, FALSE));
- emit2 ("xor a,!immedbyte", 0x80);
- emit2 ("ld %s,a", _fTmp[1]);
- fDidXor = TRUE;
- }
- }
- while (size--)
- {
- /* Do a long subtract */
- if (!sign || size)
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- }
- if (sign && size == 0)
- {
- emit2 ("ld a,%s", _fTmp[0]);
- emit2 ("%s a,%s", offset == 0 ? "sub" : "sbc", _fTmp[1]);
- }
- else
- {
- /* Subtract through, propagating the carry */
- emit2 ("%s a,%s", offset == 0 ? "sub" : "sbc", aopGet (AOP (right), offset, FALSE));
- offset++;
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ lit = (unsigned long) floatFromVal (AOP (right)->aopu.aop_lit);
+ /* optimize if(x < 0) or if(x >= 0) */
+ if (lit == 0L)
+ {
+ if (!sign)
+ {
+ /* No sign so it's always false */
+ _clearCarry();
+ }
+ else
+ {
+ /* Just load in the top most bit */
+ _moveA (aopGet (AOP (left), AOP_SIZE (left) - 1, FALSE));
+ if (!(AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result)) && ifx)
+ {
+ genIfxJump (ifx, "7");
+ return;
+ }
+ else
+ emit2 ("rlc a");
+ }
+ goto release;
+ }
+ }
+
+ if (sign)
+ {
+ /* First setup h and l contaning the top most bytes XORed */
+ bool fDidXor = FALSE;
+ if (AOP_TYPE (left) == AOP_LIT)
+ {
+ unsigned long lit = (unsigned long)
+ floatFromVal (AOP (left)->aopu.aop_lit);
+ emit2 ("ld %s,!immedbyte", _fTmp[0],
+ 0x80 ^ (unsigned int) ((lit >> ((size - 1) * 8)) & 0x0FFL));
+ }
+ else
+ {
+ emit2 ("ld a,%s", aopGet (AOP (left), size - 1, FALSE));
+ emit2 ("xor a,!immedbyte", 0x80);
+ emit2 ("ld %s,a", _fTmp[0]);
+ fDidXor = TRUE;
+ }
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ unsigned long lit = (unsigned long)
+ floatFromVal (AOP (right)->aopu.aop_lit);
+ emit2 ("ld %s,!immedbyte", _fTmp[1],
+ 0x80 ^ (unsigned int) ((lit >> ((size - 1) * 8)) & 0x0FFL));
+ }
+ else
+ {
+ emit2 ("ld a,%s", aopGet (AOP (right), size - 1, FALSE));
+ emit2 ("xor a,!immedbyte", 0x80);
+ emit2 ("ld %s,a", _fTmp[1]);
+ fDidXor = TRUE;
+ }
+ }
+ while (size--)
+ {
+ /* Do a long subtract */
+ if (!sign || size)
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ }
+ if (sign && size == 0)
+ {
+ emit2 ("ld a,%s", _fTmp[0]);
+ emit2 ("%s a,%s", offset == 0 ? "sub" : "sbc", _fTmp[1]);
+ }
+ else
+ {
+ /* Subtract through, propagating the carry */
+ emit2 ("%s a,%s", offset == 0 ? "sub" : "sbc", aopGet (AOP (right), offset, FALSE));
+ offset++;
+ }
+ }
+ }
}
#endif
*/
static void
genCmp (operand * left, operand * right,
- operand * result, iCode * ifx, int sign)
+ operand * result, iCode * ifx, int sign)
{
int size, offset = 0;
unsigned long lit = 0L;
{
emit2 ("ld a,(de)");
emit2 ("%s a,(hl)", offset == 0 ? "sub" : "sbc");
-
+
if (size != 0)
{
emit2 ("inc hl");
}
else
{
- if (!sign)
+ if (!sign)
{
emit2 ("rlc a");
}
AOP_TYPE (left) != AOP_DIR)
{
if (lit == 0)
- {
- emit2 ("ld a,%s", aopGet (AOP (left), offset, FALSE));
- if (size > 1)
- {
- while (--size)
- {
- emit2 ("or a,%s", aopGet (AOP (left), ++offset, FALSE));
- }
- }
- else
- {
- emit2 ("or a,a");
- }
- emit2 ("jp nz,!tlabel", lbl->key + 100);
- }
+ {
+ emit2 ("ld a,%s", aopGet (AOP (left), offset, FALSE));
+ if (size > 1)
+ {
+ while (--size)
+ {
+ emit2 ("or a,%s", aopGet (AOP (left), ++offset, FALSE));
+ }
+ }
+ else
+ {
+ emit2 ("or a,a");
+ }
+ emit2 ("jp nz,!tlabel", lbl->key + 100);
+ }
else
- {
- while (size--)
- {
- emit2 ("ld a,%s", aopGet (AOP (left), offset, FALSE));
- if ((AOP_TYPE (right) == AOP_LIT) && lit == 0)
- emit2 ("or a,a");
- else
- emit2 ("cp a,%s", aopGet (AOP (right), offset, FALSE));
- emit2 ("jp nz,!tlabel", lbl->key + 100);
- offset++;
- }
- }
+ {
+ while (size--)
+ {
+ emit2 ("ld a,%s", aopGet (AOP (left), offset, FALSE));
+ if ((AOP_TYPE (right) == AOP_LIT) && lit == 0)
+ emit2 ("or a,a");
+ else
+ emit2 ("cp a,%s", aopGet (AOP (right), offset, FALSE));
+ emit2 ("jp nz,!tlabel", lbl->key + 100);
+ offset++;
+ }
+ }
}
/* if the right side is in a register or in direct space or
if the left is a pointer register & right is not */
else if (AOP_TYPE (right) == AOP_REG ||
- AOP_TYPE (right) == AOP_DIR ||
- (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT))
+ AOP_TYPE (right) == AOP_DIR ||
+ (AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT))
{
while (size--)
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) &&
- ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0))
- /* PENDING */
- emit2 ("jp nz,!tlabel", lbl->key + 100);
- else
- {
- emit2 ("cp %s", aopGet (AOP (right), offset, FALSE));
- emit2 ("jp nz,!tlabel", lbl->key + 100);
- }
- offset++;
- }
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ if ((AOP_TYPE (left) == AOP_DIR && AOP_TYPE (right) == AOP_LIT) &&
+ ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0))
+ /* PENDING */
+ emit2 ("jp nz,!tlabel", lbl->key + 100);
+ else
+ {
+ emit2 ("cp %s", aopGet (AOP (right), offset, FALSE));
+ emit2 ("jp nz,!tlabel", lbl->key + 100);
+ }
+ offset++;
+ }
}
else
{
/* right is a pointer reg need both a & b */
/* PENDING: is this required? */
while (size--)
- {
- _moveA (aopGet (AOP (right), offset, FALSE));
- emit2 ("cp %s", aopGet (AOP (left), offset, FALSE));
- emit2 ("!shortjp nz,!tlabel", lbl->key + 100);
- offset++;
- }
+ {
+ _moveA (aopGet (AOP (right), offset, FALSE));
+ emit2 ("cp %s", aopGet (AOP (left), offset, FALSE));
+ emit2 ("!shortjp nz,!tlabel", lbl->key + 100);
+ offset++;
+ }
}
}
symbol *tlbl;
/* if they are both bit variables */
if (AOP_TYPE (left) == AOP_CRY &&
- ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
- {
- wassertl (0, "Tried to compare two bits");
- }
+ ((AOP_TYPE (right) == AOP_CRY) || (AOP_TYPE (right) == AOP_LIT)))
+ {
+ wassertl (0, "Tried to compare two bits");
+ }
else
- {
- tlbl = newiTempLabel (NULL);
- gencjneshort (left, right, tlbl);
- if (IC_TRUE (ifx))
- {
- emit2 ("jp !tlabel", IC_TRUE (ifx)->key + 100);
- emitLabel (tlbl->key + 100);
- }
- else
- {
- /* PENDING: do this better */
- symbol *lbl = newiTempLabel (NULL);
- emit2 ("!shortjp !tlabel", lbl->key + 100);
- emitLabel (tlbl->key + 100);
- emit2 ("jp !tlabel", IC_FALSE (ifx)->key + 100);
- emitLabel (lbl->key + 100);
- }
- }
+ {
+ tlbl = newiTempLabel (NULL);
+ gencjneshort (left, right, tlbl);
+ if (IC_TRUE (ifx))
+ {
+ emit2 ("jp !tlabel", IC_TRUE (ifx)->key + 100);
+ emitLabel (tlbl->key + 100);
+ }
+ else
+ {
+ /* PENDING: do this better */
+ symbol *lbl = newiTempLabel (NULL);
+ emit2 ("!shortjp !tlabel", lbl->key + 100);
+ emitLabel (tlbl->key + 100);
+ emit2 ("jp !tlabel", IC_FALSE (ifx)->key + 100);
+ emitLabel (lbl->key + 100);
+ }
+ }
/* mark the icode as generated */
ifx->generated = 1;
goto release;
else
{
emitDebug(";4");
-
+
gencjne (left, right, newiTempLabel (NULL));
if (AOP_TYPE (result) == AOP_CRY && AOP_SIZE (result))
- {
- wassert (0);
- }
+ {
+ wassert (0);
+ }
if (ifx)
- {
+ {
emitDebug(";5");
- genIfxJump (ifx, "a");
- goto release;
- }
+ genIfxJump (ifx, "a");
+ goto release;
+ }
/* if the result is used in an arithmetic operation
then put the result in place */
if (AOP_TYPE (result) != AOP_CRY)
- {
+ {
emitDebug(";6");
- outAcc (result);
- }
+ outAcc (result);
+ }
/* leave the result in acc */
}
}
emit2 ("!shortjp nz,!tlabel", tlbl->key + 100);
}
- offset++;
+ offset++;
}
// bit = left & literal
if (size)
if (sameRegs (AOP (result), AOP (left)))
{
for (; size--; offset++)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
- continue;
- else
- {
- if (bytelit == 0)
- aopPut (AOP (result), "!zero", offset);
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("and a,%s",
- aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (left), "a", offset);
- }
- }
-
- }
- else
- {
- if (AOP_TYPE (left) == AOP_ACC)
- {
- wassertl (0, "Tried to perform an AND where the left operand is allocated into A");
- }
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("and a,%s",
- aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (left), "a", offset);
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
+ continue;
+ else
+ {
+ if (bytelit == 0)
+ aopPut (AOP (result), "!zero", offset);
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("and a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (left), "a", offset);
+ }
+ }
+
+ }
+ else
+ {
+ if (AOP_TYPE (left) == AOP_ACC)
+ {
+ wassertl (0, "Tried to perform an AND where the left operand is allocated into A");
+ }
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("and a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (left), "a", offset);
+ }
+ }
+ }
}
else
{
// left & result in different registers
if (AOP_TYPE (result) == AOP_CRY)
- {
- wassertl (0, "Tried to AND where the result is in carry");
- }
+ {
+ wassertl (0, "Tried to AND where the result is in carry");
+ }
else
- {
- for (; (size--); offset++)
- {
- // normal case
- // result = left & right
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset, FALSE),
- offset);
- continue;
- }
- else if (bytelit == 0)
- {
- aopPut (AOP (result), "!zero", offset);
- continue;
- }
- }
- // faster than result <- left, anl result,right
- // and better if result is SFR
- if (AOP_TYPE (left) == AOP_ACC)
- emit2 ("and a,%s", aopGet (AOP (right), offset, FALSE));
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("and a,%s",
- aopGet (AOP (right), offset, FALSE));
- }
- aopPut (AOP (result), "a", offset);
- }
- }
+ {
+ for (; (size--); offset++)
+ {
+ // normal case
+ // result = left & right
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ if ((bytelit = (int) ((lit >> (offset * 8)) & 0x0FFL)) == 0x0FF)
+ {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset, FALSE),
+ offset);
+ continue;
+ }
+ else if (bytelit == 0)
+ {
+ aopPut (AOP (result), "!zero", offset);
+ continue;
+ }
+ }
+ // faster than result <- left, anl result,right
+ // and better if result is SFR
+ if (AOP_TYPE (left) == AOP_ACC)
+ emit2 ("and a,%s", aopGet (AOP (right), offset, FALSE));
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("and a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ }
+ aopPut (AOP (result), "a", offset);
+ }
+ }
}
if (sameRegs (AOP (result), AOP (left)))
{
for (; size--; offset++)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- continue;
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("or a,%s",
- aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (result), "a", offset);
- }
- }
- else
- {
- if (AOP_TYPE (left) == AOP_ACC)
- emit2 ("or a,%s", aopGet (AOP (right), offset, FALSE));
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("or a,%s",
- aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (result), "a", offset);
- }
- }
- }
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
+ continue;
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("or a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (result), "a", offset);
+ }
+ }
+ else
+ {
+ if (AOP_TYPE (left) == AOP_ACC)
+ emit2 ("or a,%s", aopGet (AOP (right), offset, FALSE));
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("or a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (result), "a", offset);
+ }
+ }
+ }
}
else
{
// left & result in different registers
if (AOP_TYPE (result) == AOP_CRY)
- {
- wassertl (0, "Result of OR is in a bit");
- }
+ {
+ wassertl (0, "Result of OR is in a bit");
+ }
else
- for (; (size--); offset++)
- {
- // normal case
- // result = left & right
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset, FALSE),
- offset);
- continue;
- }
- }
- // faster than result <- left, anl result,right
- // and better if result is SFR
- if (AOP_TYPE (left) == AOP_ACC)
- emit2 ("or a,%s", aopGet (AOP (right), offset, FALSE));
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("or a,%s",
- aopGet (AOP (right), offset, FALSE));
- }
- aopPut (AOP (result), "a", offset);
- /* PENDING: something weird is going on here. Add exception. */
- if (AOP_TYPE (result) == AOP_ACC)
- break;
- }
+ for (; (size--); offset++)
+ {
+ // normal case
+ // result = left & right
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
+ {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset, FALSE),
+ offset);
+ continue;
+ }
+ }
+ // faster than result <- left, anl result,right
+ // and better if result is SFR
+ if (AOP_TYPE (left) == AOP_ACC)
+ emit2 ("or a,%s", aopGet (AOP (right), offset, FALSE));
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("or a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ }
+ aopPut (AOP (result), "a", offset);
+ /* PENDING: something weird is going on here. Add exception. */
+ if (AOP_TYPE (result) == AOP_ACC)
+ break;
+ }
}
release:
if (sameRegs (AOP (result), AOP (left)))
{
for (; size--; offset++)
- {
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- continue;
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("xor a,%s",
- aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (result), "a", offset);
- }
- }
- else
- {
- if (AOP_TYPE (left) == AOP_ACC)
+ {
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
+ continue;
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("xor a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (result), "a", offset);
+ }
+ }
+ else
+ {
+ if (AOP_TYPE (left) == AOP_ACC)
{
emit2 ("xor a,%s", aopGet (AOP (right), offset, FALSE));
}
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("xor a,%s",
- aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (result), "a", offset);
- }
- }
- }
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("xor a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (result), "a", offset);
+ }
+ }
+ }
}
else
{
// left & result in different registers
if (AOP_TYPE (result) == AOP_CRY)
- {
- wassertl (0, "Result of XOR is in a bit");
- }
+ {
+ wassertl (0, "Result of XOR is in a bit");
+ }
else
- for (; (size--); offset++)
- {
- // normal case
- // result = left & right
- if (AOP_TYPE (right) == AOP_LIT)
- {
- if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
- {
- aopPut (AOP (result),
- aopGet (AOP (left), offset, FALSE),
- offset);
- continue;
- }
- }
- // faster than result <- left, anl result,right
- // and better if result is SFR
- if (AOP_TYPE (left) == AOP_ACC)
+ for (; (size--); offset++)
+ {
+ // normal case
+ // result = left & right
+ if (AOP_TYPE (right) == AOP_LIT)
+ {
+ if (((lit >> (offset * 8)) & 0x0FFL) == 0x00L)
+ {
+ aopPut (AOP (result),
+ aopGet (AOP (left), offset, FALSE),
+ offset);
+ continue;
+ }
+ }
+ // faster than result <- left, anl result,right
+ // and better if result is SFR
+ if (AOP_TYPE (left) == AOP_ACC)
{
emit2 ("xor a,%s", aopGet (AOP (right), offset, FALSE));
}
- else
- {
- _moveA (aopGet (AOP (left), offset, FALSE));
- emit2 ("xor a,%s",
- aopGet (AOP (right), offset, FALSE));
- }
- aopPut (AOP (result), "a", offset);
- }
+ else
+ {
+ _moveA (aopGet (AOP (left), offset, FALSE));
+ emit2 ("xor a,%s",
+ aopGet (AOP (right), offset, FALSE));
+ }
+ aopPut (AOP (result), "a", offset);
+ }
}
release:
while (*bp)
{
if (*bp == '\n')
- {
- *bp++ = '\0';
- emit2 (bp1);
- bp1 = bp;
- }
+ {
+ *bp++ = '\0';
+ emit2 (bp1);
+ bp1 = bp;
+ }
else
- {
- if (*bp == ':')
- {
- bp++;
- *bp = '\0';
- bp++;
- emit2 (bp1);
- bp1 = bp;
- }
- else
- bp++;
- }
+ {
+ if (*bp == ':')
+ {
+ bp++;
+ *bp = '\0';
+ bp++;
+ emit2 (bp1);
+ bp1 = bp;
+ }
+ else
+ bp++;
+ }
}
if (bp1 != bp)
emit2 (bp1);
/*-----------------------------------------------------------------*/
static void
shiftR2Left2Result (operand * left, int offl,
- operand * result, int offr,
- int shCount, int is_signed)
+ operand * result, int offr,
+ int shCount, int is_signed)
{
int size = 2;
symbol *tlbl, *tlbl1;
movLeft2Result (left, offl + 1, result, offr + 1, 0);
/* if (AOP(result)->type == AOP_REG) { */
-
+
tlbl = newiTempLabel (NULL);
tlbl1 = newiTempLabel (NULL);
/*-----------------------------------------------------------------*/
static void
shiftL2Left2Result (operand * left, int offl,
- operand * result, int offr, int shCount)
+ operand * result, int offr, int shCount)
{
if (sameRegs (AOP (result), AOP (left)) &&
((offl + MSB16) == offr))
if (getPairId (AOP (result)) == PAIR_HL)
{
while (shCount--)
- {
- emit2 ("add hl,hl");
- }
+ {
+ emit2 ("add hl,hl");
+ }
}
else
{
if (AOP (result)->type == AOP_REG)
{
- while (shCount--)
- {
- for (offset = 0; offset < size; offset++)
- {
- l = aopGet (AOP (result), offset, FALSE);
-
- if (offset == 0)
- {
- emit2 ("sla %s", l);
- }
- else
- {
- emit2 ("rl %s", l);
- }
- }
- }
+ while (shCount--)
+ {
+ for (offset = 0; offset < size; offset++)
+ {
+ l = aopGet (AOP (result), offset, FALSE);
+
+ if (offset == 0)
+ {
+ emit2 ("sla %s", l);
+ }
+ else
+ {
+ emit2 ("rl %s", l);
+ }
+ }
+ }
}
else
{
- /* Left is already in result - so now do the shift */
- if (shCount > 1)
- {
- emit2 ("ld a,!immedbyte+1", shCount);
- emit2 ("!shortjp !tlabel", tlbl1->key + 100);
- emitLabel (tlbl->key + 100);
- }
-
- while (size--)
- {
- l = aopGet (AOP (result), offset, FALSE);
-
- if (offset == 0)
- {
- emit2 ("sla %s", l);
- }
- else
- {
- emit2 ("rl %s", l);
- }
-
- offset++;
- }
- if (shCount > 1)
- {
- emitLabel (tlbl1->key + 100);
- emit2 ("dec a");
- emit2 ("!shortjp nz,!tlabel", tlbl->key + 100);
- }
+ /* Left is already in result - so now do the shift */
+ if (shCount > 1)
+ {
+ emit2 ("ld a,!immedbyte+1", shCount);
+ emit2 ("!shortjp !tlabel", tlbl1->key + 100);
+ emitLabel (tlbl->key + 100);
+ }
+
+ while (size--)
+ {
+ l = aopGet (AOP (result), offset, FALSE);
+
+ if (offset == 0)
+ {
+ emit2 ("sla %s", l);
+ }
+ else
+ {
+ emit2 ("rl %s", l);
+ }
+
+ offset++;
+ }
+ if (shCount > 1)
+ {
+ emitLabel (tlbl1->key + 100);
+ emit2 ("dec a");
+ emit2 ("!shortjp nz,!tlabel", tlbl->key + 100);
+ }
}
}
}
static void
AccRol (int shCount)
{
- shCount &= 0x0007; // shCount : 0..7
+ shCount &= 0x0007; // shCount : 0..7
#if 0
switch (shCount)
if (shCount != 0)
{
if (shCount == 1)
- {
- emit2 ("add a,a");
- }
+ {
+ emit2 ("add a,a");
+ }
else if (shCount == 2)
- {
- emit2 ("add a,a");
- emit2 ("add a,a");
- }
+ {
+ emit2 ("add a,a");
+ emit2 ("add a,a");
+ }
else
- {
- /* rotate left accumulator */
- AccRol (shCount);
- /* and kill the lower order bits */
- emit2 ("and a,!immedbyte", SLMask[shCount]);
- }
+ {
+ /* rotate left accumulator */
+ AccRol (shCount);
+ /* and kill the lower order bits */
+ emit2 ("and a,!immedbyte", SLMask[shCount]);
+ }
}
}
/*-----------------------------------------------------------------*/
static void
shiftL1Left2Result (operand * left, int offl,
- operand * result, int offr, int shCount)
+ operand * result, int offr, int shCount)
{
const char *l;
l = aopGet (AOP (left), offl, FALSE);
{
shCount -= 8;
if (size > 1)
- {
- if (shCount)
- {
- movLeft2Result (left, LSB, result, MSB16, 0);
- aopPut (AOP (result), "!zero", 0);
- shiftL1Left2Result (left, LSB, result, MSB16, shCount);
- }
- else
- {
- movLeft2Result (left, LSB, result, MSB16, 0);
- aopPut (AOP (result), "!zero", 0);
- }
- }
+ {
+ if (shCount)
+ {
+ movLeft2Result (left, LSB, result, MSB16, 0);
+ aopPut (AOP (result), "!zero", 0);
+ shiftL1Left2Result (left, LSB, result, MSB16, shCount);
+ }
+ else
+ {
+ movLeft2Result (left, LSB, result, MSB16, 0);
+ aopPut (AOP (result), "!zero", 0);
+ }
+ }
else
- {
- aopPut (AOP (result), "!zero", LSB);
- }
+ {
+ aopPut (AOP (result), "!zero", LSB);
+ }
}
/* 1 <= shCount <= 7 */
else
{
if (size == 1)
- {
- wassert (0);
- }
+ {
+ wassert (0);
+ }
else
- {
- shiftL2Left2Result (left, LSB, result, LSB, shCount);
- }
+ {
+ shiftL2Left2Result (left, LSB, result, LSB, shCount);
+ }
}
}
/*-----------------------------------------------------------------*/
static void
genLeftShiftLiteral (operand * left,
- operand * right,
- operand * result,
- iCode * ic)
+ operand * right,
+ operand * result,
+ iCode * ic)
{
int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
int size;
wassert (0);
}
- else if (shCount >= (size * 8))
+ else if (shCount >= (size * 8))
{
while (size--)
{
else
{
switch (size)
- {
- case 1:
- genlshOne (result, left, shCount);
- break;
- case 2:
- genlshTwo (result, left, shCount);
- break;
- case 4:
- wassertl (0, "Shifting of longs is currently unsupported");
- break;
- default:
- wassert (0);
- }
+ {
+ case 1:
+ genlshOne (result, left, shCount);
+ break;
+ case 2:
+ genlshTwo (result, left, shCount);
+ break;
+ case 4:
+ wassertl (0, "Shifting of longs is currently unsupported");
+ break;
+ default:
+ wassert (0);
+ }
}
freeAsmop (left, NULL, ic);
freeAsmop (result, NULL, ic);
if (AOP_TYPE (left) != AOP_REG || AOP_TYPE (result) != AOP_REG)
_push (PAIR_AF);
-
+
/* now move the left to the result if they are not the
same */
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- l = aopGet (AOP (left), offset, FALSE);
- aopPut (AOP (result), l, offset);
- offset++;
- }
+ {
+ l = aopGet (AOP (left), offset, FALSE);
+ aopPut (AOP (result), l, offset);
+ offset++;
+ }
}
tlbl = newiTempLabel (NULL);
if (AOP_TYPE (left) != AOP_REG || AOP_TYPE (result) != AOP_REG)
_pop (PAIR_AF);
-
+
emit2 ("!shortjp !tlabel", tlbl1->key + 100);
emitLabel (tlbl->key + 100);
l = aopGet (AOP (result), offset, FALSE);
{
_moveA (l);
while (shCount--)
- {
- emit2 ("%s a", is_signed ? "sra" : "srl");
- }
+ {
+ emit2 ("%s a", is_signed ? "sra" : "srl");
+ }
aopPut (AOP (result), "a", 0);
}
}
/*-----------------------------------------------------------------*/
static void
shiftR1Left2Result (operand * left, int offl,
- operand * result, int offr,
- int shCount, int sign)
+ operand * result, int offr,
+ int shCount, int sign)
{
_moveA (aopGet (AOP (left), offl, FALSE));
if (sign)
{
while (shCount--)
- {
- emit2 ("%s a", sign ? "sra" : "srl");
- }
+ {
+ emit2 ("%s a", sign ? "sra" : "srl");
+ }
}
else
{
/*-----------------------------------------------------------------*/
static void
genrshTwo (operand * result, operand * left,
- int shCount, int sign)
+ int shCount, int sign)
{
/* if shCount >= 8 */
if (shCount >= 8)
{
shCount -= 8;
if (shCount)
- {
- shiftR1Left2Result (left, MSB16, result, LSB,
- shCount, sign);
- }
+ {
+ shiftR1Left2Result (left, MSB16, result, LSB,
+ shCount, sign);
+ }
else
- {
- movLeft2Result (left, MSB16, result, LSB, sign);
- }
+ {
+ movLeft2Result (left, MSB16, result, LSB, sign);
+ }
if (sign)
{
/* Sign extend the result */
/*-----------------------------------------------------------------*/
static void
genRightShiftLiteral (operand * left,
- operand * right,
- operand * result,
- iCode * ic,
+ operand * right,
+ operand * result,
+ iCode * ic,
int sign)
{
int shCount = (int) floatFromVal (AOP (right)->aopu.aop_lit);
else
{
switch (size)
- {
- case 1:
- genrshOne (result, left, shCount, sign);
- break;
- case 2:
- genrshTwo (result, left, shCount, sign);
- break;
- case 4:
- wassertl (0, "Asked to shift right a long which should be a function call");
- break;
- default:
- wassertl (0, "Entered default case in right shift delegate");
- }
+ {
+ case 1:
+ genrshOne (result, left, shCount, sign);
+ break;
+ case 2:
+ genrshTwo (result, left, shCount, sign);
+ break;
+ case 4:
+ wassertl (0, "Asked to shift right a long which should be a function call");
+ break;
+ default:
+ wassertl (0, "Entered default case in right shift delegate");
+ }
}
freeAsmop (left, NULL, ic);
freeAsmop (result, NULL, ic);
if (AOP_TYPE (left) != AOP_REG || AOP_TYPE (result) != AOP_REG)
_push (PAIR_AF);
-
+
/* now move the left to the result if they are not the
same */
if (!sameRegs (AOP (left), AOP (result)))
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- l = aopGet (AOP (left), offset, FALSE);
- aopPut (AOP (result), l, offset);
- offset++;
- }
+ {
+ l = aopGet (AOP (left), offset, FALSE);
+ aopPut (AOP (result), l, offset);
+ offset++;
+ }
}
tlbl = newiTempLabel (NULL);
tlbl1 = newiTempLabel (NULL);
size = AOP_SIZE (result);
offset = size - 1;
-
+
if (AOP_TYPE (left) != AOP_REG || AOP_TYPE (result) != AOP_REG)
_pop (PAIR_AF);
{
l = aopGet (AOP (result), offset--, FALSE);
if (first)
- {
+ {
emit2 ("%s %s", is_signed ? "sra" : "srl", l);
- first = 0;
- }
+ first = 0;
+ }
else
{
emit2 ("rr %s", l);
static void
genUnpackBits (operand * result, int pair)
{
- int offset = 0; /* result byte offset */
- int rsize; /* result size */
- int rlen = 0; /* remaining bitfield length */
- sym_link *etype; /* bitfield type information */
- int blen; /* bitfield length */
- int bstr; /* bitfield starting bit within byte */
+ int offset = 0; /* result byte offset */
+ int rsize; /* result size */
+ int rlen = 0; /* remaining bitfield length */
+ sym_link *etype; /* bitfield type information */
+ int blen; /* bitfield length */
+ int bstr; /* bitfield starting bit within byte */
emitDebug ("; genUnpackBits");
emit2 ("bit %d,a", blen - 1);
emit2 ("jp z,!tlabel", tlbl->key + 100);
emit2 ("or a,!immedbyte", (unsigned char) (0xff << blen));
- emitLabel (tlbl->key + 100);
+ emitLabel (tlbl->key + 100);
}
aopPut (AOP (result), "a", offset++);
goto finish;
emit2 ("bit %d,a", blen - 1);
emit2 ("jp z,!tlabel", tlbl->key + 100);
emit2 ("or a,!immedbyte", (unsigned char) (0xff << blen));
- emitLabel (tlbl->key + 100);
+ emitLabel (tlbl->key + 100);
}
emit2 ("ld h,a");
spillPair (PAIR_HL);
emit2 ("bit %d,a", rlen - 1);
emit2 ("jp z,!tlabel", tlbl->key + 100);
emit2 ("or a,!immedbyte", (unsigned char) (0xff << rlen));
- emitLabel (tlbl->key + 100);
+ emitLabel (tlbl->key + 100);
}
aopPut (AOP (result), "a", offset++);
}
}
rsize -= offset;
while (rsize--)
- aopPut (AOP (result), source, offset++);
+ aopPut (AOP (result), source, offset++);
}
}
/*-----------------------------------------------------------------*/
static void
genGenPointerGet (operand * left,
- operand * result, iCode * ic)
+ operand * result, iCode * ic)
{
int size, offset;
sym_link *retype = getSpec (operandType (result));
{
/* Just do it */
if (isPtrPair (AOP (left)))
- {
- tsprintf (buffer, sizeof(buffer),
- "!*pair", getPairName (AOP (left)));
- aopPut (AOP (result), buffer, 0);
- }
+ {
+ tsprintf (buffer, sizeof(buffer),
+ "!*pair", getPairName (AOP (left)));
+ aopPut (AOP (result), buffer, 0);
+ }
else
- {
- emit2 ("ld a,!*pair", getPairName (AOP (left)));
- aopPut (AOP (result), "a", 0);
- }
+ {
+ emit2 ("ld a,!*pair", getPairName (AOP (left)));
+ aopPut (AOP (result), "a", 0);
+ }
freeAsmop (left, NULL, ic);
goto release;
}
{
/* Just do it */
offset = 0;
- while (size--)
+ while (size--)
{
char at[20];
tsprintf (at, sizeof(at), "!*iyx", offset);
aopPut (AOP (result), at, offset);
offset++;
}
-
+
freeAsmop (left, NULL, ic);
goto release;
}
offset = 0;
while (size--)
- {
- /* PENDING: make this better */
- if (!IS_GB && AOP_TYPE (result) == AOP_REG)
- {
- aopPut (AOP (result), "!*hl", offset++);
- }
- else
- {
- emit2 ("ld a,!*pair", _pairs[pair].name);
- aopPut (AOP (result), "a", offset++);
- }
- if (size)
- {
- emit2 ("inc %s", _pairs[pair].name);
- _G.pairs[pair].offset++;
- }
- }
+ {
+ /* PENDING: make this better */
+ if (!IS_GB && AOP_TYPE (result) == AOP_REG)
+ {
+ aopPut (AOP (result), "!*hl", offset++);
+ }
+ else
+ {
+ emit2 ("ld a,!*pair", _pairs[pair].name);
+ aopPut (AOP (result), "a", offset++);
+ }
+ if (size)
+ {
+ emit2 ("inc %s", _pairs[pair].name);
+ _G.pairs[pair].offset++;
+ }
+ }
/* Fixup HL back down */
for (size = AOP_SIZE (result)-1; size; size--)
{
offset = 0;
while (size--)
- {
- /* PENDING: make this better */
- if (!IS_GB &&
+ {
+ /* PENDING: make this better */
+ if (!IS_GB &&
(AOP_TYPE (result) == AOP_REG || AOP_TYPE (result) == AOP_HLREG))
- {
- aopPut (AOP (result), "!*hl", offset++);
- }
- else
- {
- emit2 ("ld a,!*pair", _pairs[pair].name);
- aopPut (AOP (result), "a", offset++);
- }
- if (size)
- {
- emit2 ("inc %s", _pairs[pair].name);
- _G.pairs[pair].offset++;
- }
- }
+ {
+ aopPut (AOP (result), "!*hl", offset++);
+ }
+ else
+ {
+ emit2 ("ld a,!*pair", _pairs[pair].name);
+ aopPut (AOP (result), "a", offset++);
+ }
+ if (size)
+ {
+ emit2 ("inc %s", _pairs[pair].name);
+ _G.pairs[pair].offset++;
+ }
+ }
}
freeAsmop (left, NULL, ic);
/*-----------------------------------------------------------------*/
static void
genPackBits (sym_link * etype,
- operand * right,
- int pair,
- iCode *ic)
-{
- int offset = 0; /* source byte offset */
- int rlen = 0; /* remaining bitfield length */
- int blen; /* bitfield length */
- int bstr; /* bitfield starting bit within byte */
- int litval; /* source literal value (if AOP_LIT) */
- unsigned char mask; /* bitmask within current byte */
- int extraPair; /* a tempory register */
- bool needPopExtra=0; /* need to restore original value of temp reg */
+ operand * right,
+ int pair,
+ iCode *ic)
+{
+ int offset = 0; /* source byte offset */
+ int rlen = 0; /* remaining bitfield length */
+ int blen; /* bitfield length */
+ int bstr; /* bitfield starting bit within byte */
+ int litval; /* source literal value (if AOP_LIT) */
+ unsigned char mask; /* bitmask within current byte */
+ int extraPair; /* a tempory register */
+ bool needPopExtra=0; /* need to restore original value of temp reg */
emitDebug ("; genPackBits","");
if (blen < 8)
{
mask = ((unsigned char) (0xFF << (blen + bstr)) |
- (unsigned char) (0xFF >> (8 - bstr)));
+ (unsigned char) (0xFF >> (8 - bstr)));
if (AOP_TYPE (right) == AOP_LIT)
{
if (rlen)
{
mask = (((unsigned char) -1 << rlen) & 0xff);
-
+
if (AOP_TYPE (right) == AOP_LIT)
{
/* Case with partial byte and literal source
/*-----------------------------------------------------------------*/
static void
genGenPointerSet (operand * right,
- operand * result, iCode * ic)
+ operand * result, iCode * ic)
{
int size, offset;
sym_link *retype = getSpec (operandType (right));
sym_link *letype = getSpec (operandType (result));
PAIR_ID pairId = PAIR_HL;
bool isBitvar;
-
+
aopOp (result, ic, FALSE, FALSE);
aopOp (right, ic, FALSE, FALSE);
const char *l = aopGet (AOP (right), 0, FALSE);
const char *pair = getPairName (AOP (result));
if (canAssignToPtr (l) && isPtr (pair))
- {
- emit2 ("ld !*pair,%s", pair, l);
- }
+ {
+ emit2 ("ld !*pair,%s", pair, l);
+ }
else
- {
- _moveA (l);
- emit2 ("ld !*pair,a", pair);
- }
+ {
+ _moveA (l);
+ emit2 ("ld !*pair,a", pair);
+ }
goto release;
}
-
+
if ( getPairId( AOP (result)) == PAIR_IY && !isBitvar)
{
/* Just do it */
const char *l = aopGet (AOP (right), 0, FALSE);
offset = 0;
- while (size--)
+ while (size--)
{
if (canAssignToPtr (l))
{
offset = 0;
while (size--)
- {
- const char *l = aopGet (AOP (right), offset, FALSE);
- if (isRegOrLit (AOP (right)) && !IS_GB)
- {
- emit2 ("ld !*pair,%s", _pairs[PAIR_HL].name, l);
- }
- else
- {
- _moveA (l);
- emit2 ("ld !*pair,a", _pairs[PAIR_HL].name);
- }
- if (size)
- {
- emit2 ("inc %s", _pairs[PAIR_HL].name);
- _G.pairs[PAIR_HL].offset++;
- }
- offset++;
- }
+ {
+ const char *l = aopGet (AOP (right), offset, FALSE);
+ if (isRegOrLit (AOP (right)) && !IS_GB)
+ {
+ emit2 ("ld !*pair,%s", _pairs[PAIR_HL].name, l);
+ }
+ else
+ {
+ _moveA (l);
+ emit2 ("ld !*pair,a", _pairs[PAIR_HL].name);
+ }
+ if (size)
+ {
+ emit2 ("inc %s", _pairs[PAIR_HL].name);
+ _G.pairs[PAIR_HL].offset++;
+ }
+ offset++;
+ }
/* Fixup HL back down */
for (size = AOP_SIZE (right)-1; size; size--)
offset = 0;
while (size--)
- {
- const char *l = aopGet (AOP (right), offset, FALSE);
- if (isRegOrLit (AOP (right)) && !IS_GB)
- {
- emit2 ("ld !*pair,%s", _pairs[pairId].name, l);
- }
- else
- {
- _moveA (l);
- emit2 ("ld !*pair,a", _pairs[pairId].name);
- }
- if (size)
- {
- emit2 ("inc %s", _pairs[pairId].name);
- _G.pairs[pairId].offset++;
- }
- offset++;
- }
+ {
+ const char *l = aopGet (AOP (right), offset, FALSE);
+ if (isRegOrLit (AOP (right)) && !IS_GB)
+ {
+ emit2 ("ld !*pair,%s", _pairs[pairId].name, l);
+ }
+ else
+ {
+ _moveA (l);
+ emit2 ("ld !*pair,a", _pairs[pairId].name);
+ }
+ if (size)
+ {
+ emit2 ("inc %s", _pairs[pairId].name);
+ _G.pairs[pairId].offset++;
+ }
+ offset++;
+ }
}
release:
freeAsmop (right, NULL, ic);
if (IS_GB)
{
if (sym->onStack)
- {
- spillCached ();
- if (sym->stack <= 0)
- {
+ {
+ spillCached ();
+ if (sym->stack <= 0)
+ {
setupPairFromSP (PAIR_HL, sym->stack + _G.stack.pushed + _G.stack.offset);
- }
- else
- {
+ }
+ else
+ {
setupPairFromSP (PAIR_HL, sym->stack + _G.stack.pushed + _G.stack.offset + _G.stack.param_offset);
- }
+ }
commitPair (AOP (IC_RESULT (ic)), PAIR_HL);
- }
+ }
else
- {
- emit2 ("ld de,!hashedstr", sym->rname);
+ {
+ emit2 ("ld de,!hashedstr", sym->rname);
commitPair (AOP (IC_RESULT (ic)), PAIR_DE);
- }
+ }
}
else
{
spillCached ();
if (sym->onStack)
- {
- /* if it has an offset then we need to compute it */
- if (sym->stack > 0)
- emit2 ("ld hl,!immedword", sym->stack + _G.stack.pushed + _G.stack.offset + _G.stack.param_offset);
- else
- emit2 ("ld hl,!immedword", sym->stack + _G.stack.pushed + _G.stack.offset);
- emit2 ("add hl,sp");
- }
+ {
+ /* if it has an offset then we need to compute it */
+ if (sym->stack > 0)
+ emit2 ("ld hl,!immedword", sym->stack + _G.stack.pushed + _G.stack.offset + _G.stack.param_offset);
+ else
+ emit2 ("ld hl,!immedword", sym->stack + _G.stack.pushed + _G.stack.offset);
+ emit2 ("add hl,sp");
+ }
else
- {
- emit2 ("ld hl,!hashedstr", sym->rname);
- }
+ {
+ emit2 ("ld hl,!hashedstr", sym->rname);
+ }
commitPair (AOP (IC_RESULT (ic)), PAIR_HL);
}
freeAsmop (IC_RESULT (ic), NULL, ic);
fetchPairLong (getPairId (AOP (result)), AOP (right), ic, LSB);
}
else if ((size > 1) &&
- (AOP_TYPE (result) != AOP_REG) &&
- (AOP_TYPE (right) == AOP_LIT) &&
- !IS_FLOAT (operandType (right)) &&
- (lit < 256L))
+ (AOP_TYPE (result) != AOP_REG) &&
+ (AOP_TYPE (right) == AOP_LIT) &&
+ !IS_FLOAT (operandType (right)) &&
+ (lit < 256L))
{
bool fXored = FALSE;
offset = 0;
Done this way so that we can use the cached copy of 0
in A for a fast clear */
while (size--)
- {
- if ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0)
- {
- if (!fXored && size > 1)
- {
- emit2 ("xor a,a");
- fXored = TRUE;
- }
- if (fXored)
- {
- aopPut (AOP (result), "a", offset);
- }
- else
- {
- aopPut (AOP (result), "!zero", offset);
- }
- }
- else
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE),
- offset);
- offset++;
- }
+ {
+ if ((unsigned int) ((lit >> (offset * 8)) & 0x0FFL) == 0)
+ {
+ if (!fXored && size > 1)
+ {
+ emit2 ("xor a,a");
+ fXored = TRUE;
+ }
+ if (fXored)
+ {
+ aopPut (AOP (result), "a", offset);
+ }
+ else
+ {
+ aopPut (AOP (result), "!zero", offset);
+ }
+ }
+ else
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset, FALSE),
+ offset);
+ offset++;
+ }
}
else if (size == 2 && AOP_TYPE (right) == AOP_IY)
{
else
{
while (size--)
- {
- /* PENDING: do this check better */
- if (IS_GB && requiresHL (AOP (right)) && requiresHL (AOP (result)))
- {
- _moveA (aopGet (AOP (right), offset, FALSE));
- aopPut (AOP (result), "a", offset);
- }
- else
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE),
- offset);
- offset++;
- }
+ {
+ /* PENDING: do this check better */
+ if (IS_GB && requiresHL (AOP (right)) && requiresHL (AOP (result)))
+ {
+ _moveA (aopGet (AOP (right), offset, FALSE));
+ aopPut (AOP (result), "a", offset);
+ }
+ else
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset, FALSE),
+ offset);
+ offset++;
+ }
}
release:
/* if they are in the same place */
if (sameRegs (AOP (right), AOP (result)))
- goto release;
+ goto release;
/* if they in different places then copy */
size = AOP_SIZE (result);
offset = 0;
while (size--)
- {
- aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE),
- offset);
- offset++;
- }
+ {
+ aopPut (AOP (result),
+ aopGet (AOP (right), offset, FALSE),
+ offset);
+ offset++;
+ }
goto release;
}
while (size--)
{
aopPut (AOP (result),
- aopGet (AOP (right), offset, FALSE),
- offset);
+ aopGet (AOP (right), offset, FALSE),
+ offset);
offset++;
}
if (!IS_SPEC (rtype) || SPEC_USIGN (rtype) || AOP_TYPE(right)==AOP_CRY)
{
while (size--)
- aopPut (AOP (result), "!zero", offset++);
+ aopPut (AOP (result), "!zero", offset++);
}
else
{
/* we need to extend the sign :{ */
const char *l = aopGet (AOP (right), AOP_SIZE (right) - 1,
- FALSE);
+ FALSE);
_moveA (l);
emit2 ("rla ");
emit2 ("sbc a,a");
while (size--)
- aopPut (AOP (result), "a", offset++);
+ aopPut (AOP (result), "a", offset++);
}
release:
for (i = 0; i < size; i++) {
aopPut(AOP(IC_RESULT(ic)), _fReceive[_G.receiveOffset++], i);
- }
+ }
}
freeAsmop (IC_RESULT (ic), NULL, ic);
if (op && IS_SYMOP (op))
{
aopOp (op, ic, FALSE, FALSE);
-
+
/* general case */
size = AOP_SIZE (op);
offset = 0;
while (size--)
- {
- _moveA (aopGet (AOP (op), offset, FALSE));
- offset++;
- }
+ {
+ _moveA (aopGet (AOP (op), offset, FALSE));
+ offset++;
+ }
freeAsmop (op, NULL, ic);
}
-
+
op = IC_LEFT (ic);
if (op && IS_SYMOP (op))
{
aopOp (op, ic, FALSE, FALSE);
-
+
/* general case */
size = AOP_SIZE (op);
offset = 0;
while (size--)
- {
- _moveA (aopGet (AOP (op), offset, FALSE));
- offset++;
- }
+ {
+ _moveA (aopGet (AOP (op), offset, FALSE));
+ offset++;
+ }
freeAsmop (op, NULL, ic);
}
}
+/*-----------------------------------------------------------------*/
+/* genCritical - generate code for start of a critical sequence */
+/*-----------------------------------------------------------------*/
+static void
+genCritical (iCode *ic)
+{
+ symbol *tlbl = newiTempLabel (NULL);
+
+ if (IS_GB)
+ {
+ emit2 ("!di");
+ }
+ else if (IC_RESULT (ic))
+ {
+ aopOp (IC_RESULT (ic), ic, TRUE, FALSE);
+ aopPut (AOP (IC_RESULT (ic)), "!zero", 0);
+ //get interrupt enable flag IFF2 into P/O
+ emit2 ("ld a,i");
+ //disable interrupt
+ emit2 ("!di");
+ //parity odd <==> P/O=0 <==> interrupt enable flag IFF2=0
+ emit2 ("jp po,!tlabel", tlbl->key + 100);
+ aopPut (AOP (IC_RESULT (ic)), "!one", 0);
+ emit2 ("!tlabeldef", (tlbl->key + 100));
+ freeAsmop (IC_RESULT (ic), NULL, ic);
+ }
+ else
+ {
+ //get interrupt enable flag IFF2 into P/O
+ emit2 ("ld a,i");
+ //disable interrupt
+ emit2 ("!di");
+ //save P/O flag
+ emit2 ("push af");
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* genEndCritical - generate code for end of a critical sequence */
+/*-----------------------------------------------------------------*/
+static void
+genEndCritical (iCode *ic)
+{
+ symbol *tlbl = newiTempLabel (NULL);
+
+ if (IS_GB)
+ {
+ emit2 ("!ei");
+ }
+ else if (IC_RIGHT (ic))
+ {
+ aopOp (IC_RIGHT (ic), ic, FALSE, TRUE);
+ _toBoolean (IC_RIGHT (ic));
+ //don't enable interrupts if they were off before
+ emit2 ("!shortjp z,!tlabel", tlbl->key + 100);
+ emit2 ("!ei");
+ emitLabel (tlbl->key + 100);
+ freeAsmop (IC_RIGHT (ic), NULL, ic);
+ }
+ else
+ {
+ //restore P/O flag
+ emit2 ("pop af");
+ //parity odd <==> P/O=0 <==> interrupt enable flag IFF2 was 0 <==>
+ //don't enable interrupts as they were off before
+ emit2 ("jp po,!tlabel", tlbl->key + 100);
+ emit2 ("!ei");
+ emit2 ("!tlabeldef", (tlbl->key + 100));
+ }
+}
+
enum
{
/** Maximum number of bytes to emit per line. */
/** Flushes a byte chunker by writing out all in the buffer and
- reseting.
+ reseting.
*/
static void
_dbFlush(DBEMITCTX *self)
{
DBEMITCTX db;
memset(&db, 0, sizeof(db));
-
+
emit2(".db %u", self->pos);
-
+
for (i = 0; i < self->pos; i++)
{
_dbEmit(&db, self->buffer[i]);
fetchPair (PAIR_HL, AOP (IC_LEFT (ic)));
emit2 ("call __initrleblock");
-
+
type = operandType(IC_LEFT(ic));
-
+
if (type && type->next)
{
if (IS_SPEC(type->next) || IS_PTR(type->next))
}
else
{
- printTypeChainRaw (type, NULL);
+ printTypeChainRaw (type, NULL);
wassertl (0, "Can't determine element size in genArrayInit.");
}
}
_rleAppend(&rle, val);
}
}
-
+
iLoop = iLoop->next;
}
Note: Have ex de,hl
Combinations:
- hl = hl => unity, fine
+ hl = hl => unity, fine
bc = bc
de = de
- hl = hl hl = hl, swap de <=> bc
+ hl = hl hl = hl, swap de <=> bc
bc = de
de = bc
- hl = bc Worst case
+ hl = bc Worst case
bc = de
de = hl
-
- hl = bc de = de, swap bc <=> hl
+
+ hl = bc de = de, swap bc <=> hl
bc = hl
de = de
- hl = de Worst case
+ hl = de Worst case
bc = hl
de = bc
- hl = de bc = bc, swap hl <=> de
+ hl = de bc = bc, swap hl <=> de
bc = bc
de = hl
So how do we detect the cases?
How about a 3x3 matrix?
- source
+ source
dest x x x x
x x x x
x x x x (Fourth for iTemp/other)
}
/* Count the number of unity or iTemp assigns. */
- for (i = 0; i < 3; i++)
+ for (i = 0; i < 3; i++)
{
if (ids[dest[i]][dest[i]] == TRUE || ids[dest[i]][PAIR_INVALID] == TRUE)
{
/* if we need assign a result value */
if ((IS_ITEMP (IC_RESULT (ic)) &&
(OP_SYMBOL (IC_RESULT (ic))->nRegs ||
- OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
+ OP_SYMBOL (IC_RESULT (ic))->spildir)) ||
IS_TRUE_SYMOP (IC_RESULT (ic)))
{
aopOp (IC_RESULT (ic), ic, FALSE, FALSE);
/*-----------------------------------------------------------------*/
/* genBuiltIn - calls the appropriate function to generating code */
-/* for a built in function */
+/* for a built in function */
/*-----------------------------------------------------------------*/
static void genBuiltIn (iCode *ic)
{
/* which function is it */
bif = OP_SYMBOL(IC_LEFT(bi_iCode));
- if (strcmp(bif->name,"__builtin_strcpy")==0)
+ if (strcmp(bif->name,"__builtin_strcpy")==0)
{
- genBuiltInStrcpy(bi_iCode, nbi_parms, bi_parms);
- }
- else if (strcmp(bif->name,"__builtin_memcpy")==0)
+ genBuiltInStrcpy(bi_iCode, nbi_parms, bi_parms);
+ }
+ else if (strcmp(bif->name,"__builtin_memcpy")==0)
{
- genBuiltInMemcpy(bi_iCode, nbi_parms, bi_parms);
- }
- else
+ genBuiltInMemcpy(bi_iCode, nbi_parms, bi_parms);
+ }
+ else
{
- wassertl (0, "Unknown builtin function encountered");
+ wassertl (0, "Unknown builtin function encountered");
}
}
}
_G.lines.head = _G.lines.current = NULL;
-
+
/* if debug information required */
if (options.debug && currFunc)
{
_G.current_iCode = ic;
if (ic->lineno && cln != ic->lineno)
- {
- if (options.debug)
- {
- debugFile->writeCLine (ic);
- }
- if (!options.noCcodeInAsm) {
- emit2 (";%s:%d: %s", ic->filename, ic->lineno,
- printCLine(ic->filename, ic->lineno));
- }
- cln = ic->lineno;
- }
- if (options.iCodeInAsm) {
- emit2 (";ic:%d: %s", ic->key, printILine(ic));
- }
+ {
+ if (options.debug)
+ {
+ debugFile->writeCLine (ic);
+ }
+ if (!options.noCcodeInAsm)
+ {
+ emit2 (";%s:%d: %s", ic->filename, ic->lineno,
+ printCLine(ic->filename, ic->lineno));
+ }
+ cln = ic->lineno;
+ }
+ if (options.iCodeInAsm)
+ {
+ emit2 (";ic:%d: %s", ic->key, printILine(ic));
+ }
/* if the result is marked as
spilt and rematerializable or code for
this has already been generated then
do nothing */
if (resultRemat (ic) || ic->generated)
- continue;
+ continue;
/* depending on the operation */
switch (ic->op)
- {
- case '!':
- emitDebug ("; genNot");
- genNot (ic);
- break;
-
- case '~':
- emitDebug ("; genCpl");
- genCpl (ic);
- break;
-
- case UNARYMINUS:
- emitDebug ("; genUminus");
- genUminus (ic);
- break;
-
- case IPUSH:
- emitDebug ("; genIpush");
- genIpush (ic);
- break;
-
- case IPOP:
- /* IPOP happens only when trying to restore a
- spilt live range, if there is an ifx statement
- following this pop then the if statement might
- be using some of the registers being popped which
- would destory the contents of the register so
- we need to check for this condition and handle it */
- if (ic->next &&
- ic->next->op == IFX &&
- regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
- {
+ {
+ case '!':
+ emitDebug ("; genNot");
+ genNot (ic);
+ break;
+
+ case '~':
+ emitDebug ("; genCpl");
+ genCpl (ic);
+ break;
+
+ case UNARYMINUS:
+ emitDebug ("; genUminus");
+ genUminus (ic);
+ break;
+
+ case IPUSH:
+ emitDebug ("; genIpush");
+ genIpush (ic);
+ break;
+
+ case IPOP:
+ /* IPOP happens only when trying to restore a
+ spilt live range, if there is an ifx statement
+ following this pop then the if statement might
+ be using some of the registers being popped which
+ would destory the contents of the register so
+ we need to check for this condition and handle it */
+ if (ic->next &&
+ ic->next->op == IFX &&
+ regsInCommon (IC_LEFT (ic), IC_COND (ic->next)))
+ {
emitDebug ("; genIfx");
- genIfx (ic->next, ic);
- }
- else
- {
- emitDebug ("; genIpop");
- genIpop (ic);
- }
- break;
-
- case CALL:
- emitDebug ("; genCall");
- genCall (ic);
- break;
-
- case PCALL:
- emitDebug ("; genPcall");
- genPcall (ic);
- break;
-
- case FUNCTION:
- emitDebug ("; genFunction");
- genFunction (ic);
- break;
-
- case ENDFUNCTION:
- emitDebug ("; genEndFunction");
- genEndFunction (ic);
- break;
-
- case RETURN:
- emitDebug ("; genRet");
- genRet (ic);
- break;
-
- case LABEL:
- emitDebug ("; genLabel");
- genLabel (ic);
- break;
-
- case GOTO:
- emitDebug ("; genGoto");
- genGoto (ic);
- break;
-
- case '+':
- emitDebug ("; genPlus");
- genPlus (ic);
- break;
-
- case '-':
- emitDebug ("; genMinus");
- genMinus (ic);
- break;
-
- case '*':
- emitDebug ("; genMult");
- genMult (ic);
- break;
-
- case '/':
- emitDebug ("; genDiv");
- genDiv (ic);
- break;
-
- case '%':
- emitDebug ("; genMod");
- genMod (ic);
- break;
-
- case '>':
- emitDebug ("; genCmpGt");
- genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case '<':
- emitDebug ("; genCmpLt");
- genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case LE_OP:
- case GE_OP:
- case NE_OP:
-
- /* note these two are xlated by algebraic equivalence
- during parsing SDCC.y */
- werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
- "got '>=' or '<=' shouldn't have come here");
- break;
-
- case EQ_OP:
- emitDebug ("; genCmpEq");
- genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case AND_OP:
- emitDebug ("; genAndOp");
- genAndOp (ic);
- break;
-
- case OR_OP:
- emitDebug ("; genOrOp");
- genOrOp (ic);
- break;
-
- case '^':
- emitDebug ("; genXor");
- genXor (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case '|':
- emitDebug ("; genOr");
- genOr (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case BITWISEAND:
- emitDebug ("; genAnd");
- genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
- break;
-
- case INLINEASM:
- emitDebug ("; genInline");
- genInline (ic);
- break;
-
- case RRC:
- emitDebug ("; genRRC");
- genRRC (ic);
- break;
-
- case RLC:
- emitDebug ("; genRLC");
- genRLC (ic);
- break;
-
- case GETHBIT:
- emitDebug ("; genGetHBIT");
- genGetHbit (ic);
+ genIfx (ic->next, ic);
+ }
+ else
+ {
+ emitDebug ("; genIpop");
+ genIpop (ic);
+ }
+ break;
+
+ case CALL:
+ emitDebug ("; genCall");
+ genCall (ic);
+ break;
+
+ case PCALL:
+ emitDebug ("; genPcall");
+ genPcall (ic);
+ break;
+
+ case FUNCTION:
+ emitDebug ("; genFunction");
+ genFunction (ic);
+ break;
+
+ case ENDFUNCTION:
+ emitDebug ("; genEndFunction");
+ genEndFunction (ic);
+ break;
+
+ case RETURN:
+ emitDebug ("; genRet");
+ genRet (ic);
+ break;
+
+ case LABEL:
+ emitDebug ("; genLabel");
+ genLabel (ic);
+ break;
+
+ case GOTO:
+ emitDebug ("; genGoto");
+ genGoto (ic);
+ break;
+
+ case '+':
+ emitDebug ("; genPlus");
+ genPlus (ic);
+ break;
+
+ case '-':
+ emitDebug ("; genMinus");
+ genMinus (ic);
+ break;
+
+ case '*':
+ emitDebug ("; genMult");
+ genMult (ic);
+ break;
+
+ case '/':
+ emitDebug ("; genDiv");
+ genDiv (ic);
+ break;
+
+ case '%':
+ emitDebug ("; genMod");
+ genMod (ic);
+ break;
+
+ case '>':
+ emitDebug ("; genCmpGt");
+ genCmpGt (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case '<':
+ emitDebug ("; genCmpLt");
+ genCmpLt (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case LE_OP:
+ case GE_OP:
+ case NE_OP:
+
+ /* note these two are xlated by algebraic equivalence
+ during parsing SDCC.y */
+ werror (E_INTERNAL_ERROR, __FILE__, __LINE__,
+ "got '>=' or '<=' shouldn't have come here");
+ break;
+
+ case EQ_OP:
+ emitDebug ("; genCmpEq");
+ genCmpEq (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case AND_OP:
+ emitDebug ("; genAndOp");
+ genAndOp (ic);
+ break;
+
+ case OR_OP:
+ emitDebug ("; genOrOp");
+ genOrOp (ic);
+ break;
+
+ case '^':
+ emitDebug ("; genXor");
+ genXor (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case '|':
+ emitDebug ("; genOr");
+ genOr (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case BITWISEAND:
+ emitDebug ("; genAnd");
+ genAnd (ic, ifxForOp (IC_RESULT (ic), ic));
+ break;
+
+ case INLINEASM:
+ emitDebug ("; genInline");
+ genInline (ic);
+ break;
+
+ case RRC:
+ emitDebug ("; genRRC");
+ genRRC (ic);
+ break;
+
+ case RLC:
+ emitDebug ("; genRLC");
+ genRLC (ic);
+ break;
+
+ case GETHBIT:
+ emitDebug ("; genGetHBIT");
+ genGetHbit (ic);
+ break;
+
+ case LEFT_OP:
+ emitDebug ("; genLeftShift");
+ genLeftShift (ic);
+ break;
+
+ case RIGHT_OP:
+ emitDebug ("; genRightShift");
+ genRightShift (ic);
+ break;
+
+ case GET_VALUE_AT_ADDRESS:
+ emitDebug ("; genPointerGet");
+ genPointerGet (ic);
+ break;
+
+ case '=':
+
+ if (POINTER_SET (ic))
+ {
+ emitDebug ("; genAssign (pointer)");
+ genPointerSet (ic);
+ }
+ else
+ {
+ emitDebug ("; genAssign");
+ genAssign (ic);
+ }
break;
- case LEFT_OP:
- emitDebug ("; genLeftShift");
- genLeftShift (ic);
- break;
-
- case RIGHT_OP:
- emitDebug ("; genRightShift");
- genRightShift (ic);
- break;
-
- case GET_VALUE_AT_ADDRESS:
- emitDebug ("; genPointerGet");
- genPointerGet (ic);
- break;
-
- case '=':
-
- if (POINTER_SET (ic))
- {
- emitDebug ("; genAssign (pointer)");
- genPointerSet (ic);
- }
- else
- {
- emitDebug ("; genAssign");
- genAssign (ic);
- }
- break;
-
- case IFX:
+ case IFX:
emitDebug ("; genIfx");
- genIfx (ic, NULL);
- break;
-
- case ADDRESS_OF:
- emitDebug ("; genAddrOf");
- genAddrOf (ic);
- break;
-
- case JUMPTABLE:
- emitDebug ("; genJumpTab");
- genJumpTab (ic);
- break;
-
- case CAST:
- emitDebug ("; genCast");
- genCast (ic);
- break;
-
- case RECEIVE:
- emitDebug ("; genReceive");
- genReceive (ic);
- break;
-
- case SEND:
- if (ic->builtinSEND)
+ genIfx (ic, NULL);
+ break;
+
+ case ADDRESS_OF:
+ emitDebug ("; genAddrOf");
+ genAddrOf (ic);
+ break;
+
+ case JUMPTABLE:
+ emitDebug ("; genJumpTab");
+ genJumpTab (ic);
+ break;
+
+ case CAST:
+ emitDebug ("; genCast");
+ genCast (ic);
+ break;
+
+ case RECEIVE:
+ emitDebug ("; genReceive");
+ genReceive (ic);
+ break;
+
+ case SEND:
+ if (ic->builtinSEND)
{
emitDebug ("; genBuiltIn");
genBuiltIn(ic);
emitDebug ("; addSet");
addSet (&_G.sendSet, ic);
}
- break;
+ break;
- case ARRAYINIT:
- emitDebug ("; genArrayInit");
+ case ARRAYINIT:
+ emitDebug ("; genArrayInit");
genArrayInit(ic);
break;
- case DUMMY_READ_VOLATILE:
- emitDebug ("; genDummyRead");
- genDummyRead (ic);
- break;
+ case DUMMY_READ_VOLATILE:
+ emitDebug ("; genDummyRead");
+ genDummyRead (ic);
+ break;
+
+ case CRITICAL:
+ emitDebug ("; genCritical");
+ genCritical (ic);
+ break;
- default:
- ic = ic;
- }
+ case ENDCRITICAL:
+ emitDebug ("; genEndCritical");
+ genEndCritical (ic);
+ break;
+
+ default:
+ ic = ic;
+ }
}
printLine (_G.lines.head, codeOutFile);
if (_G.flushStatics)
{
- flushStatics ();
- _G.flushStatics = 0;
+ flushStatics ();
+ _G.flushStatics = 0;
}
codeOutFile = fp;
}
{
case PAIR_DE:
if (bitVectBitValue (ic->rMask, D_IDX))
- ret++;
+ ret++;
if (bitVectBitValue (ic->rMask, E_IDX))
- ret++;
+ ret++;
break;
default:
wassert (0);
projects / fw / sdcc / commitdiff