mirror of
https://github.com/Museum-of-Art-and-Digital-Entertainment/macross.git
synced 2024-11-26 22:51:04 +00:00
437 lines
10 KiB
C
437 lines
10 KiB
C
/*
|
|
* Copyright (c) 1987 Fujitsu
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
/*
|
|
builtins.c -- Built-in functions for the Slinky linker
|
|
|
|
Chip Morningstar -- Lucasfilm Ltd.
|
|
|
|
14-November-1985
|
|
*/
|
|
|
|
#include "slinkyTypes.h"
|
|
#include "slinkyGlobals.h"
|
|
#include "slinkyExpressions.h"
|
|
#include "builtins.h"
|
|
#include "errorStuff.h"
|
|
#include "expr.h"
|
|
#include "link.h"
|
|
#include "relocate.h"
|
|
#include <string.h>
|
|
|
|
#define getSymbol() ((symbolType *)getNumber())
|
|
|
|
void
|
|
tooFewArgs(int argCount, stringType *name)
|
|
{
|
|
error(TOO_FEW_ARGUMENTS_TO_BIF_ERROR, name);
|
|
while (argCount-- > 0)
|
|
skipExpression();
|
|
}
|
|
|
|
void
|
|
tooManyArgs(int argCount, stringType *name)
|
|
{
|
|
error(TOO_MANY_ARGUMENTS_TO_BIF_ERROR, name);
|
|
while (argCount-- > 0)
|
|
skipExpression();
|
|
}
|
|
|
|
/*
|
|
The built-in-functions themselves: pointers to these are loaded into the
|
|
builtInFunctionTable at linker compile time. These are all known within
|
|
the Macross assembler: each symbol of the form "xxx" is assigned a pointer
|
|
to "xxxBIF" (BIF == Built-In-Function).
|
|
*/
|
|
|
|
/* The two ATASCII related BIF's refer to this table -- This really only
|
|
makes sense for the 6502 version, but is harmless in other versions. */
|
|
static char atasciiTable[] = { /* 0xFFs will become 0x00s on output */
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
|
|
0xFF, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
|
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
|
|
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
|
|
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
|
|
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
|
|
0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
|
|
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
|
|
0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
|
|
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
|
|
0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0xFF,
|
|
};
|
|
|
|
/* Convert a string to ATASCII */
|
|
stringType *
|
|
atasciiBIF(int argCount)
|
|
{
|
|
stringType *string;
|
|
stringType *newString;
|
|
int i;
|
|
|
|
if (argCount == 0) {
|
|
return("");
|
|
} else if (argCount > 1) {
|
|
tooManyArgs(argCount, "atascii");
|
|
return("");
|
|
} else {
|
|
string = (stringType *)evaluateExpression();
|
|
newString = (stringType *)malloc(strlen(string)+1);
|
|
for (i=0; string[i]!='\0'; i++)
|
|
newString[i] = atasciiTable[string[i]];
|
|
newString[i] = '\0';
|
|
return(newString);
|
|
}
|
|
}
|
|
|
|
/* Convert a string to ATASCII while setting high-order color bits */
|
|
stringType *
|
|
atasciiColorBIF(int argCount)
|
|
{
|
|
stringType *string;
|
|
stringType *newString;
|
|
int color;
|
|
int i;
|
|
byte testChar;
|
|
|
|
if (argCount == 0) {
|
|
return("");
|
|
} else if (argCount == 1) {
|
|
return(atasciiBIF(argCount));
|
|
} else if (argCount > 2) {
|
|
tooManyArgs(argCount, "atasciiColor");
|
|
return("");
|
|
} else {
|
|
string = (stringType *)evaluateExpression();
|
|
color = (evaluateExpression() & 0x03) << 6;
|
|
newString = (stringType *)malloc(strlen(string)+1);
|
|
for (i=0; string[i]!='\0'; i++) {
|
|
testChar = atasciiTable[string[i]];
|
|
if (testChar == 0xFF)
|
|
testChar = 0;
|
|
testChar = (testChar & 0x3F) | color;
|
|
if (testChar == 0)
|
|
testChar = 0xFF;
|
|
newString[i] = testChar;
|
|
}
|
|
newString[i] = '\0';
|
|
return(newString);
|
|
}
|
|
}
|
|
|
|
/* Check if an operand is absolute (as opposed to relocatable) */
|
|
bool
|
|
isAbsoluteValueBIF(int argCount)
|
|
{
|
|
if (argCount > 1)
|
|
tooManyArgs(argCount, "isAbsoluteValue");
|
|
return(TRUE);
|
|
}
|
|
|
|
/* Check if operand is a condition code */
|
|
bool
|
|
isConditionCodeBIF(int argCount)
|
|
{
|
|
bool result;
|
|
|
|
if (argCount == 0)
|
|
return(FALSE);
|
|
else if (argCount > 1) {
|
|
tooManyArgs(argCount, "isConditionCode");
|
|
return(FALSE);
|
|
}
|
|
result = (*pc == CONDITION_CODE_TAG);
|
|
skipExpression();
|
|
return(result);
|
|
}
|
|
|
|
/* Check if a symbol is defined */
|
|
bool
|
|
isDefinedBIF(int argCount)
|
|
{
|
|
symbolType *symbol;
|
|
|
|
if (argCount == 0)
|
|
return(FALSE);
|
|
else if (argCount > 1) {
|
|
tooManyArgs(argCount, "isDefined");
|
|
return(FALSE);
|
|
}
|
|
if (*pc != IDENTIFIER_TAG) {
|
|
skipExpression();
|
|
return(TRUE);
|
|
}
|
|
pc++; /* skip tag */
|
|
symbol = getSymbol();
|
|
return((symbol->symbolClass & ~SYMBOL_EXTERNAL) != 0);
|
|
}
|
|
|
|
/* Check if a symbol is externally visible */
|
|
bool
|
|
isExternalBIF(int argCount)
|
|
{
|
|
symbolType *symbol;
|
|
|
|
if (argCount == 0)
|
|
return(FALSE);
|
|
else if (argCount > 1) {
|
|
tooManyArgs(argCount, "isExternal");
|
|
return(FALSE);
|
|
}
|
|
if (*pc != IDENTIFIER_TAG) {
|
|
skipExpression();
|
|
return(TRUE);
|
|
}
|
|
pc++; /* skip tag */
|
|
symbol = getSymbol();
|
|
return((symbol->symbolClass & SYMBOL_EXTERNAL) != 0);
|
|
}
|
|
|
|
/* Return the Nth character of a string (as an integer) */
|
|
int
|
|
nthCharBIF(int argCount)
|
|
{
|
|
stringType *string;
|
|
int position;
|
|
|
|
if (argCount > 2) {
|
|
tooManyArgs(argCount, "nthChar");
|
|
return(0);
|
|
} else if (argCount != 2) {
|
|
tooFewArgs(argCount, "nthChar");
|
|
return(0);
|
|
}
|
|
string = (stringType *)evaluateExpression();
|
|
position = evaluateExpression();
|
|
if (position >= strlen(string)) {
|
|
error(BAD_POSITION_ARGUMENT_TO_NTH_CHAR_ERROR);
|
|
return(0);
|
|
}
|
|
return(string[position]);
|
|
}
|
|
|
|
/* Pass stuff through to stdio's 'printf' function */
|
|
int
|
|
printfBIF(int argCount)
|
|
{
|
|
stringType *formatString;
|
|
int argument[20];
|
|
int i;
|
|
|
|
if (argCount < 1) {
|
|
tooFewArgs(argCount, "printf");
|
|
return(0);
|
|
} else if (argCount > 21) {
|
|
tooManyArgs(argCount, "printf");
|
|
return(0);
|
|
}
|
|
formatString = (stringType *)evaluateExpression();
|
|
argCount--;
|
|
for (i=0; i<argCount; ++i)
|
|
argument[i] = evaluateExpression();
|
|
/* cretinous hack */
|
|
return(printf(formatString, argument[0], argument[1], argument[2],
|
|
argument[3], argument[4], argument[5], argument[6],
|
|
argument[7], argument[8], argument[9], argument[10],
|
|
argument[11], argument[12], argument[13],
|
|
argument[14], argument[15], argument[16],
|
|
argument[17], argument[18], argument[19]));
|
|
}
|
|
|
|
/* Concatenate two strings */
|
|
stringType *
|
|
strcatBIF(int argCount)
|
|
{
|
|
stringType *string1;
|
|
stringType *string2;
|
|
stringType *newString;
|
|
|
|
if (argCount == 0)
|
|
return("");
|
|
else if (argCount == 1)
|
|
return((stringType *)evaluateExpression());
|
|
else if (argCount > 2) {
|
|
tooManyArgs(argCount, "strcat");
|
|
return("");
|
|
}
|
|
string1 = (stringType *)evaluateExpression();
|
|
string2 = (stringType *)evaluateExpression();
|
|
newString = (stringType *)malloc(strlen(string1)+strlen(string2)+1);
|
|
strcpy(newString, string1);
|
|
strcat(newString, string2);
|
|
return(newString);
|
|
}
|
|
|
|
/* Compare two strings */
|
|
int
|
|
strcmpBIF(int argCount)
|
|
{
|
|
stringType *string1;
|
|
stringType *string2;
|
|
|
|
if (argCount < 2) {
|
|
tooFewArgs(argCount, "strcmp");
|
|
return(0);
|
|
} else if (argCount > 2) {
|
|
tooManyArgs(argCount, "strcmp");
|
|
return(0);
|
|
}
|
|
string1 = (stringType *)evaluateExpression();
|
|
string2 = (stringType *)evaluateExpression();
|
|
return(strcmp(string1, string2));
|
|
}
|
|
|
|
/* Compare two strings in a case-independent fashion */
|
|
int
|
|
strcmplcBIF(int argCount)
|
|
{
|
|
stringType *string1;
|
|
stringType *string2;
|
|
|
|
if (argCount < 2) {
|
|
tooFewArgs(argCount, "strcmplc");
|
|
return(0);
|
|
} else if (argCount > 2) {
|
|
tooManyArgs(argCount, "strcmplc");
|
|
return(0);
|
|
}
|
|
string1 = (stringType *)evaluateExpression();
|
|
string2 = (stringType *)evaluateExpression();
|
|
return(strcmplc(string1, string2));
|
|
}
|
|
|
|
/* Return the length of a string */
|
|
int
|
|
strlenBIF(int argCount)
|
|
{
|
|
if (argCount < 1)
|
|
return(0);
|
|
else if (argCount > 1) {
|
|
tooManyArgs(argCount, "strlen");
|
|
return(0);
|
|
}
|
|
return(strlen(evaluateExpression()));
|
|
}
|
|
|
|
/* Return a substring of a string */
|
|
char *
|
|
substrBIF(int argCount)
|
|
{
|
|
stringType *string;
|
|
int start;
|
|
int length;
|
|
stringType *newString;
|
|
int originalLength;
|
|
bool backwards;
|
|
|
|
if (argCount < 1)
|
|
return("");
|
|
else if (argCount == 1)
|
|
return((stringType *)evaluateExpression());
|
|
else if (argCount > 3) {
|
|
tooManyArgs(argCount, "substr");
|
|
return("");
|
|
}
|
|
string = (stringType *)evaluateExpression();
|
|
originalLength = strlen(string);
|
|
start = evaluateExpression();
|
|
if (start < 0) {
|
|
start = -start - 1;
|
|
backwards = TRUE;
|
|
} else
|
|
backwards = FALSE;
|
|
if (argCount == 2) {
|
|
length = originalLength - start;
|
|
if (backwards)
|
|
length = -length;
|
|
} else {
|
|
length = evaluateExpression();
|
|
}
|
|
if (length < 0) {
|
|
length = -length;
|
|
if (backwards)
|
|
start = start + length - 1;
|
|
else
|
|
start = start - length + 1;
|
|
}
|
|
if (backwards)
|
|
start = originalLength - start - 1;
|
|
if (originalLength <= start || originalLength < length + start ||
|
|
start < 0 ){
|
|
error(BAD_SUBSTRING_INDICES_ERROR);
|
|
return("");
|
|
}
|
|
newString = (stringType *)malloc(length+1);
|
|
strncpy(newString, string+start, length);
|
|
newString[length] = '\0';
|
|
return(newString);
|
|
}
|
|
|
|
/* Turn a string into a symbol and return its value */
|
|
addressType
|
|
symbolLookupBIF(int argCount)
|
|
{
|
|
symbolType *symbol;
|
|
stringType *symbolName;
|
|
|
|
if (argCount < 1) {
|
|
tooFewArgs(argCount, "symbolLookup");
|
|
return(0);
|
|
} else if (argCount > 1) {
|
|
tooManyArgs(argCount, "symbolLookup");
|
|
return(0);
|
|
}
|
|
symbol = lookupGlobalSymbol(symbolName = (stringType *)
|
|
evaluateExpression());
|
|
if (symbol == NULL) {
|
|
error(SYMBOL_NOT_FOUND_IN_SYMBOL_LOOKUP_ERROR, symbolName);
|
|
return(0);
|
|
} else
|
|
return(symbol->symbolValue);
|
|
}
|
|
|
|
/* Turn a symbol into a string */
|
|
stringType *
|
|
symbolNameBIF(int argCount)
|
|
{
|
|
symbolType *symbol;
|
|
|
|
if (argCount < 1) {
|
|
tooFewArgs(argCount, "symbolName");
|
|
return(NULL);
|
|
} else if (argCount > 1) {
|
|
tooManyArgs(argCount, "symbolName");
|
|
return(NULL);
|
|
}
|
|
if (*pc != IDENTIFIER_TAG) {
|
|
error(SYMBOL_NAME_ARG_IS_NOT_SYMBOL_ERROR);
|
|
skipExpression();
|
|
return("");
|
|
}
|
|
pc++;
|
|
symbol = getSymbol();
|
|
return(symbol->symbolName);
|
|
}
|