qasm/asm.cpp

1015 lines
17 KiB
C++

#define ADD_ERROR_STRINGS
#include "asm.h"
#include "eval.h"
#define CLASS MerlinLine
CLASS::CLASS()
{
clear();
}
CLASS::CLASS(std::string line)
{
clear();
set(line);
}
void CLASS::setError(uint32_t ecode)
{
errorcode = ecode;
}
void CLASS::print(uint32_t lineno)
{
int i, l;
l = outbytect;
if (l > 4)
{
l = 4;
}
//if ((opflags&OP_STD)!=OP_STD)
if ((opcodelower != "inc") && (opcodelower != "ldx") && (opcodelower != "stx"))
{
//return;
}
if (errorcode > 0)
{
if (errorcode >= errFatal)
{
SetColor(CL_WHITE | CL_BOLD | BG_RED);
}
else
{
SetColor(CL_YELLOW | CL_BOLD | BG_NORMAL);
}
}
else
{
SetColor(CL_WHITE | CL_BOLD | BG_NORMAL);
}
bool empty = false;
if ((lable == "") && (opcode == "") && (operand == ""))
{
empty = true;
}
int b = 4;
//printf("%02X ", addressmode);
//printf("%6d", lineno + 1);
if (!empty)
{
printf("%02X/%04X:", (startpc >> 16), startpc & 0xFFFF);
}
else
{
printf(" ");
}
for (i = 0; i < l; i++)
{
printf("%02X ", outbytes[i]);
}
for (i = l; i < b; i++)
{
printf(" ");
}
if ((getBool("asm.showmx", false)))
{
if (outbytect > 0)
{
printf("%%%c%c ", linemx & 02 ? '1' : '0', linemx & 01 ? '1' : '0');
}
else
{
printf(" ");
}
}
if (isDebug())
{
printf("%02X ", addressmode);
}
printf("%6d ", lineno + 1);
if (empty)
{
printf("%s", comment.c_str());
}
else
{
printf("%-12s %-8s %-10s ", lable.c_str(), opcode.c_str(), operand.c_str());
if (errorcode > 0)
{
printf(":[Error] %s", errStrings[errorcode].c_str());
}
else
{
printf("%s", comment.c_str());
}
}
if (errorcode > 0)
{
SetColor(CL_NORMAL | BG_NORMAL);
}
printf("\n");
}
void CLASS::clear()
{
syntax = SYNTAX_MERLIN;
lable = "";
opcode = "";
opcodelower = "";
operand = "";
comment = "";
operand_expr = "";
operand_expr2 = "";
addrtext = "";
linemx = 0;
bytect = 0;
opflags = 0;
pass0bytect = 0;
startpc = 0;
errorcode = 0;
outbytect = 0;
lineno = 0;
outbytes.clear();
addressmode = 0;
expr_value = 0;
flags = 0;
outbytes.clear();
}
void CLASS::set(std::string line)
{
int state = 0;
int l = line.length();
int i = 0;
char c, delim;
clear();
//printf("line: |%s|\n", line.c_str());
while (i < l)
{
c = line[i++];
//printf("state: %d\n",state);
switch (state)
{
case 0: // start of line state
if ((c == ';') || (c == '*'))
{
comment += c;
state = 7;
}
else if (c > ' ')
{
lable += c;
state = 1;
}
else
{
state = 2;
};
break;
case 1: // read in entire lable until whitespace
if (c > ' ')
{
lable += c;
}
else
{
state = 2;
}
break;
case 2: // read whitespace between label and opcode
if (c == ';')
{
comment += c;
state = 7;
}
else if (c > ' ')
{
opcode += c;
state = 3;
}
break;
case 3:
if (c > ' ')
{
opcode += c;
}
else
{
state = 4;
}
break;
case 4: // read whitespace between opcode and operand
if (c == ';')
{
comment += c;
state = 7;
}
else if (c > ' ')
{
operand += c;
if (c == '\'')
{
state = 8;
}
else
{
state = 5;
}
}
break;
case 5:
if ((c == '\'') || (c == '"'))
{
delim = c;
operand += c;
state = 8;
}
else if (c > ' ')
{
operand += c;
}
else
{
state = 6;
}
break;
case 6:
if (c > ' ')
{
comment += c;
state = 7;
}
break;
case 7:
comment += c;
break;
case 8:
if (c == delim)
{
operand += c;
state = 5;
}
else
{
operand += c;
}
break;
}
}
opcodelower = Poco::toLower(opcode);
}
#undef CLASS
#define CLASS TFileProcessor
CLASS::CLASS()
{
}
CLASS::~CLASS()
{
}
void CLASS::errorOut(uint16_t code)
{
printf("error: %d\n", code);
}
void CLASS::init(void)
{
starttime = GetTickCount();
syntax = SYNTAX_MERLIN;
}
void CLASS::complete(void)
{
uint64_t n = GetTickCount();
if (isDebug())
{
printf("Processing Time: %lu ms\n", n - starttime);
}
}
void CLASS::process(void)
{
}
int CLASS::doline(int lineno, std::string line)
{
int res = -1;
return (res);
}
int CLASS::processfile(std::string &p)
{
//Poco::File fn(p);
int c;
int res = -1;
uint32_t linect;
bool done, valid;
std::string p1;
std::string line, op;
linect = 0;
done = false;
Poco::Path tp(p);
Poco::Path path = tp.makeAbsolute();
valid = true;
p1 = tp.toString();
Poco::File fn(p1);
if (!fn.exists())
{
fn = Poco::File(p1 + ".s");
if (!fn.exists())
{
fn = Poco::File(p1 + ".S");
if (!fn.exists())
{
fn = Poco::File(p1 + ".mac");
if (!fn.exists())
{
valid = false;
}
}
}
}
p1 = fn.path();
if (valid)
{
std::ifstream f(p1);
if (f.is_open())
{
//printf("file is open\n");
line = "";
while ((!done) && (f.good()) && (!f.eof()))
{
c = f.get();
if (c == 0x8D) // merlin line ending
{
c = 0x0A; // convert to linux
}
if (c == 0x8A) // possible merlin line ending
{
c = 0x00; // ignore
}
c &= 0x7F;
int x;
switch (c)
{
case 0x0D:
break;
case 0x09:
line += " ";
break;
case 0x0A:
linect++;
x = doline(linect, line);
if (x < 0)
{
done = true;
}
line = "";
break;
default:
if ((c >= ' ') && (c < 0x7F))
{
line += c;
}
else
{
//printf("garbage %08X\n",c);
}
break;
}
}
if ( (f.eof()))
{
res = 0;
}
}
}
else
{
printf("file %s does not exist\n", p.c_str());
}
//printf("\n\nfile read result: %d\n", res);
return (res);
}
#undef CLASS
#define CLASS T65816Asm
CLASS::CLASS()
{
lines.clear();
}
#define OPHANDLER(ACB) std::bind(ACB, this, std::placeholders::_1, std::placeholders::_2)
CLASS::~CLASS()
{
}
void CLASS::pushopcode(std::string op, uint8_t opcode, uint16_t flags, TOpCallback cb)
{
TSymbol sym;
sym.name = op;
sym.opcode = opcode;
sym.namelc = Poco::toLower(op);
sym.stype = flags;
sym.value = 0;
sym.cb = cb;
std::pair<std::string, TSymbol> p(Poco::toUpper(op), sym);
opcodes.insert(p);
}
TSymbol *CLASS::findSymbol(std::string symname)
{
TSymbol *res = NULL;
//printf("finding: %s\n",symname.c_str());
auto itr = symbols.find(Poco::toUpper(symname));
if (itr != symbols.end())
{
//printf("Found: %s 0x%08X\n",itr->second.name.c_str(),itr->second.value);
res = &itr->second;
return (res);
}
return (res);
}
TSymbol *CLASS::addSymbol(std::string sym, uint32_t val, bool replace)
{
TSymbol *res = NULL;
TSymbol *fnd = NULL;
fnd = findSymbol(sym);
if ((fnd != NULL) && (!replace))
{
return (NULL); // it is a duplicate
}
if (fnd != NULL)
{
//printf("replacing symbol: %s %08X\n",sym.c_str(),val);
fnd->value = val;
return (fnd);
}
TSymbol s;
s.name = sym;
s.opcode = 0;
s.namelc = Poco::toLower(sym);
s.stype = 0;
s.value = val;
s.used=false;
s.cb = NULL;
std::pair<std::string, TSymbol> p(Poco::toUpper(sym), s);
symbols.insert(p);
res = findSymbol(sym);
return (res);
}
// set alpha to true to print table sorted by name or
// false to print by value;
void CLASS::showSymbolTable(bool alpha)
{
std::map<std::string, uint32_t> alphamap;
std::map<uint32_t, std::string> nummap;
for (auto itr = symbols.begin(); itr != symbols.end(); itr++)
{
TSymbol ptr = itr->second;
alphamap.insert(pair<std::string, uint32_t>(ptr.name, ptr.value));
nummap.insert(pair<uint32_t, std::string>(ptr.value, ptr.name));
//printf("Sym: %-24s 0x%08X\n", ptr.name.c_str(), ptr.value);
}
if (alpha)
{
printf("\nSymbol table sorted alphabetically:\n");
for (auto itr = alphamap.begin(); itr != alphamap.end(); ++itr)
{
printf("%-16s 0x%08X\n", itr->first.c_str(), itr->second);
}
}
else
{
printf("\nSymbol table sorted numerically:\n");
for (auto itr = nummap.begin(); itr != nummap.end(); ++itr)
{
printf("0x%08X %-16s\n", itr->first, itr->second.c_str());
}
}
}
int CLASS::callOpCode(std::string op, MerlinLine &line)
{
int res = -1;
char c;
if (op.length() == 4) // check for 4 digit 'L' opcodes
{
c = op[3];
if ((c >= 'a') || (c <= 'z'))
{
c = c - 0x20;
}
if (c == 'L')
{
op = op.substr(0, 3);
line.flags |= FLAG_LONGADDR;
}
}
auto itr = opcodes.find(Poco::toUpper(op));
if (itr != opcodes.end())
{
TSymbol s = itr->second;
if (s.cb != NULL)
{
res = s.cb(line, s);
if (res == -1)
{
res = -2;
}
}
}
else
{
line.setError(errBadOpcode);
}
return (res);
}
typedef struct
{
std::string regEx;
uint16_t addrMode;
std::string text;
std::string expression;
} TaddrMode;
// these are the regular expressions that determine the addressing mode
// and extract the 'expr' part of the addr-mode
// ^([_,a-z,A-Z,0-9:\]].+)\,[s,S]{1}$ // might be a better syn_s
TaddrMode addrRegEx[] =
{
{ "^(?'expr'.+)\\,[s,S]{1}$", syn_s, "e,s"}, // expr,s
{"^[(]{1}(?'expr'.+)[,]{1}[(S|s)]{1}[)]{1}[,]{1}[(Y|y)]{1}$", syn_sy, "(e,s),y"}, // (expr,s),y
{"^#{1}(?'shift'[<,>,^,|]?)(.+)$", syn_imm, "immediate"}, //#expr,#^expr,#|expr,#<expr,#>expr
{"^[(]{1}(?'expr'.+)[,]{1}[x,X]{1}\\)$", syn_diix, "(e,x)"}, // (expr,x)
{"^[(]{1}(?'expr'.+)[\\)]{1}[\\,][(Y|y]{1}$", syn_diiy, "(e),y"}, //(expr),y
{"^[(]{1}(?'expr'.+)[\\)]{1}$", syn_di, "(e)"}, // (expr)
{"^\\[{1}(?'expr'.+)\\]{1}[,]{1}[(Y|y)]{1}$", syn_iyl, "[e],x"}, // [expr],y
{"^\\[(?'expr'.+)\\]$", syn_dil, "[e]"}, // [expr]
{"^(?'expr'.+)[,]{1}[(X|x)]{1}$", syn_absx, "e,x"}, // expr,x
{"^(?'expr'.+)[,]{1}[(Y|y)]{1}$", syn_absy, "e,y"}, // expr,y
{"^(?'expr'.+)[,]{1}(?'expr2'.+)$", syn_bm, "block"}, // block move expr,expr1
{"^(?'expr'.+)$", syn_abs, "absolute"}, // expr (MUST BE LAST)
{"", 0, ""}
};
// opcode check. emitted opcodes are compared against this
// table, and if the XC status doesn't meet the requirements
// an error is thrown
// 0x00 = 6502
// 0x01 = 65C02
// 0x02 = 65816
uint8_t opCodeCompatibility[256] =
{
0x00, 0x00, 0x02, 0x02, 0x01, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x01, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x01, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x02, 0x01, 0x00, 0x00, 0x02,
0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x01, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x02, 0x01, 0x00, 0x00, 0x02,
0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00, 0x02,
0x00, 0x00, 0x02, 0x02, 0x01, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x01, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x02, 0x01, 0x00, 0x00, 0x02,
0x01, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x01, 0x00, 0x01, 0x02,
0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00, 0x02,
0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00, 0x02
};
void CLASS::init(void)
{
TFileProcessor::init();
lines.clear();
insertOpcodes();
}
void CLASS::initpass(void)
{
std::string s;
casesen = getBool("asm.casesen",true);
listing = getBool("asm.lst", true);
skiplist = false;
origin = 0x8000;
currentpc = origin;
s = getConfig("asm.cpu", "M65816");
s = Poco::trim(Poco::toUpper(s));
cpumode = MODE_65816;
mx = 0x00;
if (s == "M65816")
{
cpumode = MODE_65816;
mx = 0x00;
}
else if (s == "M65C02")
{
cpumode = MODE_65C02;
mx = 0x03;
}
else if (s == "M6502")
{
cpumode = MODE_6502;
mx = 0x03;
}
else
{
printf("Unknown CPU type in .ini\n");
}
relocatable = false;
currentsym = NULL;
totalbytes = 0;
lineno = 0;
errorct = 0;
passcomplete = false;
savepath = "";
}
void CLASS::complete(void)
{
printf("\n\n=== Assembly Complete: %d bytes %u errors.\n", totalbytes, errorct);
if (savepath != "")
{
if (errorct == 0)
{
MerlinLine *line;
std::ofstream f(savepath);
uint32_t lineno = 0;
uint32_t l = lines.size();
while (lineno < l)
{
line = &lines[lineno++];
if (line->outbytect > 0)
{
for (uint32_t i = 0; i < line->outbytect; i++)
{
f.put(line->outbytes[i]);
}
}
}
}
else
{
printf("\nErrors in assembly. Output not SAVED.\n\n");
}
}
if (listing)
{
showSymbolTable(true);
showSymbolTable(false);
}
TFileProcessor::complete();
}
int CLASS::evaluate(std::string expr, int64_t &value)
{
int res = -1;
int64_t result = 0;
if (expr.length() > 0)
{
TEvaluator eval(*this);
res = eval.evaluate(expr, result);
//printf("res=%d %08lX\n",res,result);
if (res == 0)
{
value = result;
}
}
else
{
value = 0;
res = 0;
}
return res;
}
int CLASS::getAddrMode(MerlinLine & line)
{
int res = -1;
uint16_t mode = syn_none;
int idx, x;
std::string s, oper;
std::vector<std::string> groups;
oper = line.operand;
if ((line.opcode.length() == 0) || (line.operand.length() == 0))
{
return (syn_implied);
}
idx = 0;
while (mode == syn_none)
{
s = addrRegEx[idx].regEx;
if (s == "")
{
mode = syn_err;
}
else
{
RegularExpression regex(s, 0, true);
groups.clear();
x = 0;
try
{
x = regex.split(oper, 0, groups, 0);
}
catch (...)
{
x = 0;
}
if (x > 0)
{
mode = addrRegEx[idx].addrMode;
line.addrtext = addrRegEx[idx].text;
//cout << "mode: " << line.addrtext << endl;
int ct = 0;
for (uint32_t i = 0; i < groups.size(); i++)
{
s = groups[i];
//printf("ct=%zu idx=%d group: |%s|\n", groups.size(), i, s.c_str());
if (s != "")
{
if ((s != "^") && (s != "<") && (s != ">") && (s != "|"))
{
if (ct == 1)
{
line.operand_expr = s;
}
else if (ct == 2)
{
line.operand_expr2 = s;
}
ct++;
//printf("line expression=|%s|\n", s.c_str());
}
else
{
// SGQ need to set a flag for a shift and process it after eval
}
}
}
}
}
idx++;
}
if (mode == syn_none)
{
mode = syn_err;
}
res = mode;
//printf("syn_mode=%d\n", mode);
return (res);
}
int CLASS::parseOperand(MerlinLine & line)
{
int res = -1;
line.operand_expr = "";
int m = getAddrMode(line);
if (m >= 0)
{
res = m;
}
else
{
//errorOut(errBadAddressMode);
}
return (res);
}
void CLASS::process(void)
{
uint32_t l;
int x;
char c;
std::string op, operand;
//uint32_t operand_eval;
//uint16_t addrmode;
MerlinLine *line;
pass = 0;
while (pass < 2)
{
initpass();
l = lines.size();
while ((lineno < l) && (!passcomplete))
{
line = &lines[lineno];
line->lineno = lineno + 1;
//printf("lineno: %d %d |%s|\n",lineno,l,line->operand.c_str());
op = Poco::toLower(line->opcode);
operand = Poco::toLower(line->operand);
line->startpc = currentpc;
line->linemx = mx;
line->bytect = 0;
if ((line->lable != "") && (pass == 0))
{
c = line->lable[0];
switch (c)
{
case ']':
break;
case ':':
break;
default:
addSymbol(line->lable, currentpc, false);
break;
}
}
x = parseOperand(*line);
if (x >= 0)
{
line->addressmode = x;
}
int64_t value = -1;
x = evaluate(line->operand_expr, value);
if (x == 0)
{
value &= 0xFFFFFFFF;
//printf("OPERAND VALUE=%08X\n",value);
line->expr_value = value;
}
else
{
line->expr_value = 0xFFFFFFFF;
}
x = 0;
if (op.length() > 0)
{
x = callOpCode(op, *line);
}
if (x > 0)
{
line->bytect = x;
currentpc += x;
totalbytes += x;
}
if (pass == 0)
{
line->pass0bytect = line->bytect;
}
if (pass == 1)
{
if ((line->pass0bytect != line->bytect) && (line->errorcode == 0))
{
line->setError(errBadByteCount);
}
if (line->errorcode != 0)
{
errorct++;
}
if (((!skiplist) && (listing) && (pass == 1)) || (line->errorcode != 0))
{
line->print(lineno);
}
skiplist = false;
}
lineno++;
}
pass++;
}
}
int CLASS::doline(int lineno, std::string line)
{
int res = 0;
std::string op;
MerlinLine l(line);
op = Poco::toLower(l.opcode);
if (op == "merlin")
{
syntax = SYNTAX_MERLIN;
}
else if (op == "orca")
{
syntax = SYNTAX_ORCA;
}
l.syntax = syntax;
lines.push_back(l);
if ((op == "use") || (op == "put"))
{
//printf("processing % s\n",l.operand.c_str());
processfile(l.operand);
}
return (res);
}
#undef CLASS
#define CLASS T65816Link
CLASS::CLASS()
{
}
CLASS::~CLASS()
{
}
void CLASS::init(void)
{
TFileProcessor::init();
}
void CLASS::process(void)
{
}
void CLASS::complete(void)
{
}
int CLASS::doline(int lineno, std::string line)
{
int res = 0;
return (res);
}
#undef CLASS