ref: 1a98f20535a5007c3266d2731edd95b14aa3facd
dir: /src/asm/rpn.c/
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* INCLUDES
*
*/
#include "mylink.h"
#include "types.h"
#include "symbol.h"
#include "asm.h"
#include "main.h"
#include "rpn.h"
#include <stdio.h>
#include <string.h>
void mergetwoexpressions( struct Expression *expr, struct Expression *src1, struct Expression *src2 )
{
*expr = *src1;
memcpy( &(expr->tRPN[expr->nRPNLength]), src2->tRPN, src2->nRPNLength );
expr->nRPNLength += src2->nRPNLength;
expr->isReloc |= src2->isReloc;
expr->isPCRel |= src2->isPCRel;
}
#define joinexpr() mergetwoexpressions(expr,src1,src2)
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* VARIABLES
*
*/
//UBYTE rpnexpr[2048];
//ULONG rpnptr = 0;
//ULONG rpnoutptr = 0;
//ULONG reloc = 0;
//ULONG pcrel = 0;
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* Add a byte to the RPN expression
*
*/
void pushbyte (struct Expression *expr, int b)
{
expr->tRPN[expr->nRPNLength++] = b & 0xFF;
}
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* Reset the RPN module
*
*/
void rpn_Reset (struct Expression *expr)
{
expr->nRPNLength = expr->nRPNOut = expr->isReloc = expr->isPCRel = 0;
}
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* Returns the next rpn byte in expression
*
*/
UWORD rpn_PopByte (struct Expression *expr)
{
if (expr->nRPNOut == expr->nRPNLength)
{
return (0xDEAD);
}
else
return (expr->tRPN[expr->nRPNOut++]);
}
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* Determine if the current expression is relocatable
*
*/
ULONG rpn_isReloc (struct Expression *expr)
{
return (expr->isReloc);
}
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* Determine if the current expression can be pc-relative
*
*/
ULONG rpn_isPCRelative (struct Expression *expr)
{
return (expr->isPCRel);
}
/*
* RGBAsm - RPN.C - Controls RPN expressions for objectfiles
*
* Add symbols, constants and operators to expression
*
*/
void rpn_Number (struct Expression *expr, ULONG i)
{
rpn_Reset (expr);
pushbyte (expr, RPN_CONST);
pushbyte (expr, i);
pushbyte (expr, i >> 8);
pushbyte (expr, i >> 16);
pushbyte (expr, i >> 24);
expr->nVal = i;
}
void rpn_Symbol (struct Expression *expr, char *tzSym)
{
if (!sym_isConstant (tzSym))
{
struct sSymbol *psym;
rpn_Reset(expr);
psym = sym_FindSymbol (tzSym);
if (psym == NULL || psym->pSection == pCurrentSection || psym->pSection == NULL)
expr->isPCRel = 1;
expr->isReloc = 1;
pushbyte (expr,RPN_SYM);
while (*tzSym)
pushbyte (expr,*tzSym++);
pushbyte (expr,0);
}
else
rpn_Number (expr,sym_GetConstantValue (tzSym));
}
void rpn_Bank (struct Expression *expr,char *tzSym)
{
if (!sym_isConstant (tzSym))
{
struct sSymbol *psym;
rpn_Reset( expr );
psym = sym_FindSymbol (tzSym);
if (nPass == 2 && psym == NULL)
{
sprintf (temptext, "'%s' not defined", tzSym);
yyerror (temptext);
}
expr->isReloc = 1;
pushbyte (expr,RPN_BANK);
while (*tzSym)
pushbyte (expr,*tzSym++);
pushbyte (expr,0);
}
else
yyerror ("BANK argument must be a relocatable identifier");
}
int rpn_RangeCheck( struct Expression *expr, struct Expression *src, SLONG low, SLONG high )
{
*expr=*src;
if( rpn_isReloc(src) )
{
pushbyte( expr, RPN_RANGECHECK );
pushbyte( expr, low );
pushbyte( expr, low>>8 );
pushbyte( expr, low>>16 );
pushbyte( expr, low>>24 );
pushbyte( expr, high );
pushbyte( expr, high>>8 );
pushbyte( expr, high>>16 );
pushbyte( expr, high>>24 );
return( 1 );
}
else
{
return( expr->nVal>=low && expr->nVal<=high );
}
}
#ifdef GAMEBOY
void rpn_CheckHRAM (struct Expression *expr, struct Expression *src)
{
*expr = *src;
pushbyte (expr, RPN_HRAM);
}
#endif
#ifdef PCENGINE
void rpn_CheckZP (struct Expression *expr, struct Expression *src)
{
*expr = *src;
pushbyte (expr, RPN_PCEZP);
}
#endif
void rpn_LOGNOT (struct Expression *expr, struct Expression *src)
{
*expr = *src;
pushbyte (expr, RPN_LOGUNNOT);
}
void rpn_LOGOR (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal||src2->nVal);
pushbyte (expr,RPN_LOGOR);
}
void rpn_LOGAND (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal&&src2->nVal);
pushbyte (expr,RPN_LOGAND);
}
void rpn_LOGEQU (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal==src2->nVal);
pushbyte (expr,RPN_LOGEQ);
}
void rpn_LOGGT (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal>src2->nVal);
pushbyte (expr,RPN_LOGGT);
}
void rpn_LOGLT (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal<src2->nVal);
pushbyte (expr,RPN_LOGLT);
}
void rpn_LOGGE (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal>=src2->nVal);
pushbyte (expr,RPN_LOGGE);
}
void rpn_LOGLE (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal<=src2->nVal);
pushbyte (expr,RPN_LOGLE);
}
void rpn_LOGNE (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal!=src2->nVal);
pushbyte (expr,RPN_LOGNE);
}
void rpn_ADD (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal+src2->nVal);
pushbyte (expr,RPN_ADD);
}
void rpn_SUB (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal-src2->nVal);
pushbyte (expr,RPN_SUB);
}
void rpn_XOR (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal^src2->nVal);
pushbyte (expr,RPN_XOR);
}
void rpn_OR (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal|src2->nVal);
pushbyte (expr,RPN_OR);
}
void rpn_AND (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal&src2->nVal);
pushbyte (expr,RPN_AND);
}
void rpn_SHL (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal<<src2->nVal);
pushbyte (expr,RPN_SHL);
}
void rpn_SHR (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal>>src2->nVal);
pushbyte (expr,RPN_SHR);
}
void rpn_MUL (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal*src2->nVal);
pushbyte (expr,RPN_MUL);
}
void rpn_DIV (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal/src2->nVal);
pushbyte (expr,RPN_DIV);
}
void rpn_MOD (struct Expression *expr, struct Expression *src1, struct Expression *src2)
{
joinexpr();
expr->nVal = (expr->nVal%src2->nVal);
pushbyte (expr,RPN_MOD);
}
void rpn_UNNEG (struct Expression *expr, struct Expression *src)
{
*expr = *src;
expr->nVal = -expr->nVal;
pushbyte (expr,RPN_UNSUB);
}
void rpn_UNNOT (struct Expression *expr, struct Expression *src)
{
*expr = *src;
expr->nVal = expr->nVal^0xFFFFFFFF;
pushbyte (expr,RPN_UNNOT);
}