mirror of
https://github.com/marketideas/qasm.git
synced 2024-12-28 21:30:37 +00:00
569 lines
9.7 KiB
C++
569 lines
9.7 KiB
C++
#include "psuedo.h"
|
|
#include "eval.h"
|
|
|
|
#define CLASS TPsuedoOp
|
|
|
|
CLASS::CLASS()
|
|
{
|
|
|
|
}
|
|
|
|
CLASS::~CLASS()
|
|
{
|
|
|
|
}
|
|
|
|
|
|
int CLASS::doDO(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
TEvaluator eval(a);
|
|
|
|
int64_t eval_result = 0;
|
|
uint8_t shift;
|
|
uint32_t result32;
|
|
int res = 0;
|
|
int err = 0;
|
|
|
|
std::string op = Poco::toUpper(line.opcode);
|
|
std::string oper = line.operand_expr;
|
|
result32 = 0xFFFFFFFF;
|
|
|
|
if (op == "IF")
|
|
{
|
|
if (oper == "")
|
|
{
|
|
err = errIllegalCharOperand;
|
|
}
|
|
goto out;
|
|
}
|
|
if (op == "DO")
|
|
{
|
|
|
|
a.DOstack.push(a.curDO);
|
|
|
|
if (oper == "")
|
|
{
|
|
err = errIllegalCharOperand;
|
|
a.curDO.doskip = false;
|
|
goto out;
|
|
}
|
|
|
|
shift = 0;
|
|
eval_result = 0;
|
|
int x = eval.evaluate(line.operand_expr, eval_result, shift);
|
|
|
|
if (x < 0)
|
|
{
|
|
a.curDO.doskip = false;
|
|
err = errBadLabel;
|
|
if (a.pass == 0)
|
|
{
|
|
err = errForwardRef;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
result32 = eval_result & 0xFFFFFFFF;
|
|
a.curDO.doskip = (result32 != 0) ? false : true;
|
|
|
|
goto out;
|
|
}
|
|
|
|
if (op == "ELSE")
|
|
{
|
|
if (a.DOstack.size() > 0)
|
|
{
|
|
//line.flags |= FLAG_NOLINEPRINT;
|
|
a.curDO.doskip = !a.curDO.doskip;
|
|
}
|
|
else
|
|
{
|
|
err = errUnexpectedOp;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
if (op == "FIN")
|
|
{
|
|
//line.flags |= FLAG_NOLINEPRINT;
|
|
|
|
if (a.DOstack.size() > 0)
|
|
{
|
|
a.curDO = a.DOstack.top();
|
|
a.DOstack.pop();
|
|
}
|
|
else
|
|
{
|
|
// kind of a silent error here, just make sure we reinitialize
|
|
err = errUnexpectedOp;
|
|
a.curDO.doskip = false;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
//printf("DO eval: %08X %s\n", result32, a.curDO.doskip ? "true" : "false");
|
|
|
|
if (err > 0)
|
|
{
|
|
line.setError(err);
|
|
}
|
|
return (res);
|
|
}
|
|
|
|
int CLASS::doLUP(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
TEvaluator eval(a);
|
|
|
|
int64_t eval_result = 0;
|
|
uint8_t shift;
|
|
int lidx, len;
|
|
int res = 0;
|
|
int err = 0;
|
|
|
|
std::string op = Poco::toUpper(line.opcode);
|
|
|
|
if (op == "LUP")
|
|
{
|
|
line.flags |= FLAG_NOLINEPRINT;
|
|
len = line.lineno - 1; // MerlinLine line numbers are +1 from actual array idx
|
|
if (len >= 0)
|
|
{
|
|
|
|
shift = 0;
|
|
eval_result = 0;
|
|
int x = eval.evaluate(line.operand_expr, eval_result, shift);
|
|
|
|
a.LUPstack.push(a.curLUP);
|
|
|
|
a.curLUP.lupoffset = len;
|
|
a.curLUP.lupct = eval_result & 0xFFFF; // evaluate here
|
|
a.curLUP.luprunning++;
|
|
|
|
if ((x < 0) || (eval_result <= 0) || (eval_result > 0x8000))
|
|
{
|
|
// merlin just ignores LUP if the value is out of range
|
|
a.curLUP.lupct = 0;
|
|
a.curLUP.lupskip = true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
err = errUnexpectedOp;
|
|
}
|
|
}
|
|
|
|
if (op == "--^")
|
|
{
|
|
line.flags |= FLAG_NOLINEPRINT;
|
|
|
|
if (a.curLUP.luprunning > 0)
|
|
{
|
|
lidx = line.lineno - 1;
|
|
len = lidx - a.curLUP.lupoffset - 1;
|
|
|
|
if (a.curLUP.lupct > 0)
|
|
{
|
|
a.curLUP.lupct--;
|
|
if (a.curLUP.lupct != 0)
|
|
{
|
|
a.lineno = a.curLUP.lupoffset;
|
|
goto out;
|
|
}
|
|
}
|
|
// kind of a silent error here, just make sure we reinitialize
|
|
a.curLUP.luprunning = 0;
|
|
a.curLUP.lupct = 0;
|
|
a.curLUP.lupskip = false;
|
|
|
|
//printf("start=%d end=%d len=%d\n", a.curLUP.lupoffset, lidx, len);
|
|
if (a.LUPstack.size() > 0)
|
|
{
|
|
a.curLUP = a.LUPstack.top();
|
|
a.LUPstack.pop();
|
|
}
|
|
else
|
|
{
|
|
err = errUnexpectedOp;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
a.curLUP.lupskip = false;
|
|
// SGQ - found a '--^' without a LUP, should we just ignore?
|
|
//err = errUnexpectedOp;
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (err > 0)
|
|
{
|
|
line.setError(err);
|
|
}
|
|
return (res);
|
|
}
|
|
|
|
constexpr unsigned int strhash(const char *str, int h = 0)
|
|
{
|
|
return !str[h] ? 5381 : (strhash(str, h + 1) * 33) ^ str[h];
|
|
}
|
|
|
|
int CLASS::doDATA(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
TEvaluator eval(a);
|
|
|
|
int i;
|
|
int outct = 0;
|
|
int wordsize = 2;
|
|
int endian = 0;
|
|
std::string oper = line.operand_expr;
|
|
std::string op = Poco::toUpper(Poco::trim(line.opcode));
|
|
Poco::StringTokenizer tok(oper, ",", Poco::StringTokenizer::TOK_TRIM |
|
|
Poco::StringTokenizer::TOK_IGNORE_EMPTY);
|
|
|
|
|
|
const char *ptr = (const char *)op.c_str();
|
|
switch (strhash(ptr) )
|
|
{
|
|
case strhash((const char *)"DA"):
|
|
case strhash((const char *)"DW"):
|
|
wordsize = 2;
|
|
break;
|
|
case strhash((const char *)"DDB"):
|
|
wordsize = 2;
|
|
endian = 1;
|
|
break;
|
|
case strhash((const char *)"DFB"):
|
|
case strhash((const char *)"DB"):
|
|
wordsize = 1;
|
|
break;
|
|
case strhash((const char *)"ADR"):
|
|
wordsize = 3;
|
|
break;
|
|
case strhash((const char *)"ADRL"):
|
|
wordsize = 4;
|
|
break;
|
|
default:
|
|
wordsize = 0;
|
|
break;
|
|
}
|
|
|
|
for (auto itr = tok.begin(); itr != tok.end(); ++itr)
|
|
{
|
|
//printf("%s\n",(*itr).c_str());
|
|
//evaluate each of these strings, check for errors on pass 2
|
|
|
|
std::string expr = *itr;
|
|
int64_t eval_result = 0;
|
|
uint8_t shift;
|
|
int r;
|
|
uint8_t b;
|
|
|
|
shift = 0;
|
|
r = eval.evaluate(expr, eval_result, shift);
|
|
if (r < 0)
|
|
{
|
|
//printf("eval error %d |%s|\n", r,expr.c_str());
|
|
if (a.pass > 0)
|
|
{
|
|
line.setError(errBadEvaluation);
|
|
}
|
|
}
|
|
if (shift == '>')
|
|
{
|
|
eval_result = (eval_result) & 0xFF;
|
|
}
|
|
if (shift == '<')
|
|
{
|
|
eval_result = (eval_result >> 8) & 0xFF;
|
|
}
|
|
else if ((shift == '^') || (shift == '|'))
|
|
{
|
|
eval_result = (eval_result >> 16) & 0xFF;
|
|
}
|
|
|
|
|
|
outct += wordsize;
|
|
if (a.pass > 0)
|
|
{
|
|
if (!endian) // little endian
|
|
{
|
|
for (i = 0; i < wordsize; i++)
|
|
{
|
|
b = (eval_result >> (8 * i)) & 0xFF;
|
|
line.outbytes.push_back(b);
|
|
//printf("%02X\n",b);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// big endian
|
|
for (i = 0; i < wordsize; i++)
|
|
{
|
|
b = (eval_result >> ((wordsize - 1 - i) * 8)) & 0xFF;
|
|
line.outbytes.push_back(b);
|
|
//printf("%02X\n",b);
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
line.outbytect = outct;
|
|
return (outct);
|
|
}
|
|
|
|
int CLASS::doDS(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
int res = 0;
|
|
int32_t v = line.expr_value;
|
|
if (line.eval_result != 0)
|
|
{
|
|
line.setError(errForwardRef);
|
|
}
|
|
else if ((v < 0) || ((a.PC.currentpc + v) >= 0x10000)) // no neg, or crossing bank bound
|
|
{
|
|
line.setError(errOverflow);
|
|
}
|
|
else
|
|
{
|
|
res = v;
|
|
|
|
line.datafillbyte = line.eval_result & 0xFF;
|
|
line.datafillct = v;
|
|
|
|
}
|
|
return (res);
|
|
}
|
|
|
|
int CLASS::doDUM(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
int res = 0;
|
|
bool isdend = ((opinfo.opcode == P_DEND) ? true : false);
|
|
|
|
if (!isdend)
|
|
{
|
|
a.dumstart = 1;
|
|
a.dumstartaddr = line.expr_value;
|
|
}
|
|
else
|
|
{
|
|
a.dumstart = -1;
|
|
if (a.PCstack.size() == 0)
|
|
{
|
|
line.setError(errBadDUMop);
|
|
a.dumstart = 0;
|
|
}
|
|
}
|
|
|
|
return (res);
|
|
}
|
|
|
|
int CLASS::doLST(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
std::string s;
|
|
if (a.pass > 0)
|
|
{
|
|
s = Poco::toUpper(Poco::trim(line.operand_expr));
|
|
if (s=="")
|
|
{
|
|
a.listing=true;
|
|
a.skiplist=true;
|
|
}
|
|
else if (s == "RTN")
|
|
{
|
|
if (a.LSTstack.size())
|
|
{
|
|
a.listing = a.LSTstack.top();
|
|
a.LSTstack.pop();
|
|
}
|
|
}
|
|
else if ((s == "ON") || (line.expr_value > 0))
|
|
{
|
|
//printf("ON\n");
|
|
a.skiplist = true;
|
|
a.listing = true;
|
|
}
|
|
else if ((s == "OFF") || (line.expr_value == 0))
|
|
{
|
|
//printf("OFF\n");
|
|
a.skiplist = true;
|
|
a.listing = false;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int CLASS::doTR(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
std::string s;
|
|
if (a.pass > 0)
|
|
{
|
|
s = Poco::toUpper(Poco::trim(line.operand_expr));
|
|
if (s == "ADR")
|
|
{
|
|
a.truncdata |= 0x03;
|
|
}
|
|
else if ((s == "ON") || (line.expr_value > 0))
|
|
{
|
|
a.truncdata |= 0x01;;
|
|
}
|
|
else if ((s == "OFF") || (line.expr_value == 0))
|
|
{
|
|
a.truncdata = 0x00;
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
int CLASS::doHEX(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
UNUSED(opinfo);
|
|
|
|
std::string os = Poco::toUpper(Poco::trim(line.operand_expr));
|
|
|
|
uint32_t bytect = 0;
|
|
uint8_t b = 0;
|
|
uint8_t ct = 0;
|
|
|
|
if (os.length() == 0)
|
|
{
|
|
// case where HEX has no operand, Merlin does not flag as error
|
|
//line.setError(errIllegalCharOperand);
|
|
bytect = 0;
|
|
goto out;
|
|
}
|
|
for ( uint32_t i = 0; i < os.length(); ++i )
|
|
{
|
|
char c = os[i];
|
|
|
|
if ((c >= '0') && (c <= '9'))
|
|
{
|
|
c = c - '0';
|
|
}
|
|
else if ((c >= 'a') && (c <= 'f'))
|
|
{
|
|
c = c - 'a' + 10;
|
|
}
|
|
else if ((c >= 'A') && (c <= 'F'))
|
|
{
|
|
c = c - 'A' + 10;
|
|
}
|
|
else if (c == ',')
|
|
{
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
line.setError(errIllegalCharOperand);
|
|
bytect = 0;
|
|
goto out;
|
|
}
|
|
|
|
// Got a good char, append to hex string and see if we've got a byte
|
|
switch (ct)
|
|
{
|
|
case 0:
|
|
b = (c << 4);
|
|
break;
|
|
case 1:
|
|
b |= c;
|
|
break;
|
|
}
|
|
ct = (ct + 1) & 0x01;
|
|
if (!ct)
|
|
{
|
|
if (a.pass > 0)
|
|
{
|
|
line.outbytes.push_back(b);
|
|
}
|
|
b = 0;
|
|
bytect++;
|
|
}
|
|
}
|
|
if (ct & 0x01) // we got an odd number of nibbles
|
|
{
|
|
line.setError(errBadOperand);
|
|
bytect = 0;
|
|
}
|
|
out:
|
|
line.outbytect = bytect;
|
|
return bytect;
|
|
}
|
|
|
|
|
|
int CLASS::ProcessOpcode(T65816Asm &a, MerlinLine &line, TSymbol &opinfo)
|
|
{
|
|
int res = 0;
|
|
|
|
switch (opinfo.opcode)
|
|
{
|
|
default:
|
|
res = -1; // undefined p-op
|
|
line.setError(errUnimplemented);
|
|
break;
|
|
case P_DS:
|
|
res = doDS(a, line, opinfo);
|
|
break;
|
|
case P_PUT:
|
|
case P_USE:
|
|
// both of these are handled by the input file processor, just allow them to be
|
|
// processed with no errors here
|
|
break;
|
|
case P_DUM:
|
|
case P_DEND:
|
|
res = doDUM(a, line, opinfo);
|
|
line.flags |= FLAG_FORCEADDRPRINT;
|
|
|
|
break;
|
|
case P_ORG:
|
|
if (line.operand_expr.length() > 0)
|
|
{
|
|
a.PC.orgsave = a.PC.currentpc;
|
|
a.PC.currentpc = line.expr_value;
|
|
line.startpc = line.expr_value;
|
|
}
|
|
else
|
|
{
|
|
a.PC.currentpc = a.PC.orgsave;
|
|
line.startpc = a.PC.orgsave;
|
|
}
|
|
line.flags |= FLAG_FORCEADDRPRINT;
|
|
break;
|
|
case P_SAV:
|
|
a.savepath = a.processFilename(line.operand, Poco::Path::current(), 0);
|
|
break;
|
|
case P_LST:
|
|
res = doLST(a, line, opinfo);
|
|
break;
|
|
case P_HEX:
|
|
res = doHEX(a, line, opinfo);
|
|
break;
|
|
case P_DATA:
|
|
res = doDATA(a, line, opinfo);
|
|
break;
|
|
case P_LUP:
|
|
res = doLUP(a, line, opinfo);
|
|
break;
|
|
case P_DO:
|
|
res = doDO(a, line, opinfo);
|
|
break;
|
|
case P_TR:
|
|
res=doTR(a,line,opinfo);
|
|
break;
|
|
|
|
}
|
|
return (res);
|
|
}
|