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pseudo.c
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/*
pseudo.c
check/execute pseudo-opcodes
*/
#include <stdio.h>
#ifdef __GNUC__
#include <unistd.h>
#endif
#include <string.h>
#include <ctype.h>
#include <inttypes.h>
#include "my.h"
#include "error.h"
#include "label.h"
#include "global_vars.h"
#include "parser.h"
#include "output.h"
#include "pseudo.h"
// mnemonic.c
int Endian(void);
// lyxass.c
int mainloop(int );
int LoadFile(char *, long , long , char *, long *);
// ref.c
void saveCurrentLine();
// macro.c
int DefineMacro(char *);
int EndDefineMacro();
extern FILE *my_stderr;
extern int verbose;
// keep track if a register is used
typedef struct regLabel {
int reg_flag[32*2];
int reg_line[32*2];
int reg_file[32*2];
label_t *reg_label[32*2];
int regAllocStart;
} regLabel_t;
regLabel_t risc[2] = {
{.regAllocStart = 29 },
{.regAllocStart = 29 }
};
static char transASCII[256];
int mac_mode = 0;
void translate(char * s)
{
while ( *s ){
*s = transASCII[(int)*s];
s++;
}
}
void InitTransASCII(void)
{
int i;
for ( i = 255; i >= 0; --i){
transASCII[i] = (char)i;
}
}
/*
ORG
*/
int p_org(int d)
{
int32_t l;
int err;
if ( (err = NeedConst( &l, "ORG" )) ) return err;
if ( Global.genesis == 1 && mac_mode == 0){
if ( (uint32_t)l < Global.pc ) return Error(SYNTAX_ERR,"");
writeSameBytes( 0, l-Global.pc );
} else {
Global.pc = (uint32_t)l;
}
return 0;
}
/*
ORG
*/
int p_porg(int d)
{
int32_t l;
int err;
if ( (err = NeedConst( &l, "ORG" )) ) return err;
Global.pc = (uint32_t)l;
return 0;
}
/*
RUN
*/
int p_run(int d)
{
int err;
int32_t l;
KillSpace();
if ( !atom ) {
l = Global.pc;
} else {
if ( (err = NeedConst( &l, "RUN" )) ) return err;
}
if ( Global.run == -1){
Global.mainMode = sourceMode;
Global.run = l;
Global.genesis = 1;
}
Global.pc = l;
return 0;
}
/*
END
*/
int p_end(int d)
{
*Current.SrcPtr=0;
atom = EOF;
return 0;
}
/*
SET@
*/
int p_setvar(int d)
{
int32_t l;
int err;
if ( (err = NeedConst( &l, "SET@" )) ) return err;
Global.var = l;
return 0;
}
/*
INC@
*/
int p_incvar(int d)
{
Global.var += d;
return 0;
}
/*
MACRO
*/
int p_macro(int d)
{
label_t macroLabel;
// KillSpace();
if ( GetLabel( ¯oLabel ) ) return 1;
if ( ! macroLabel.len) return 1;
return DefineMacro( macroLabel.name );
}
/*
ENDM
*/
int p_endm(int d)
{
if ( Current.Macro.Define ){
return EndDefineMacro();
} else {
Current.SrcPtr = 0;
return 0;
}
}
/*
DC.B, DB
*/
int p_definebyte(int d)
{
char help[80];
int err;
int32_t l;
int all_err = 0;
KillSpace();
if ( atom == EOF ) return Error(SYNTAX_ERR, "Missing String");
do{
if ( TestAtom('"') ){
if ( !GetString( help ,'"' ) ) return Error(SYNTAX_ERR, "Missing '\"'");
if ( d ){
translate(help);
}
writeBytes(help,(int)strlen(help));
}
else if ( TestAtom('\'') ){
if ( !GetString( help ,'\'' ) ) return Error(SYNTAX_ERR, "Missing \"'\"");
if ( d ){
translate(help);
}
writeBytes(help,(int)strlen(help));
}
else {
if ( (err = Expression( &l )) == EXPR_ERROR ) return 1;
if ( err == EXPR_UNSOLVED ) ++all_err;
if ( l < -128 || l > 255 ) return Error(BYTE_ERR,"");
if ( d ) l = transASCII[l];
writeByte((char)l);
}
} while ( TestAtom(',') );
if ( all_err ) saveCurrentLine();
return 0;
}
/*
DC.W,DW
*/
int p_defineword(int d)
{
int err;
int32_t l;
int all_err = 0;
KillSpace();
if ( atom == EOF ) return Error(SYNTAX_ERR,"");
do{
if ( (err = Expression( &l )) == EXPR_ERROR ) return 1;
if ( err == EXPR_UNSOLVED ) ++all_err;
if ( l < -32768L || l > 65535L ) return Error(WORD_ERR,"");
if ( Endian() == targetLITTLE_ENDIAN ){
writeWordLittle((short)l);
}else{
writeWordBig((short)l);
}
} while ( TestAtom(',') );
if ( all_err ) saveCurrentLine();
return 0;
}
/*
DC.L,DL
*/
int p_definelong(int d)
{
int err;
int32_t l;
int all_err = 0;
KillSpace();
if ( atom == EOF ) return Error(SYNTAX_ERR,"");
do{
if ( (err = Expression( &l )) == EXPR_ERROR ) return 1;
if ( err == EXPR_UNSOLVED ) ++all_err;
if ( Endian() == targetLITTLE_ENDIAN ){
writeLongLittle( (long)l );
}else{
writeLongBig( (long)l );
}
} while ( TestAtom(',') );
if ( all_err ) saveCurrentLine();
return 0;
}
/*
DC.P,DP
*/
int p_definephrase(int d)
{
int err;
int64_t ll;
int all_err = 0;
KillSpace();
if ( atom == EOF ) return Error(SYNTAX_ERR,"");
do{
if ( (err = Expression64( &ll )) == EXPR_ERROR ) return 1;
if ( err == EXPR_UNSOLVED ) ++all_err;
if ( Endian() == targetLITTLE_ENDIAN ){
writePhraseLittle( ll );
}else{
writePhraseBig( ll );
}
} while ( TestAtom(',') );
if ( all_err ) saveCurrentLine();
return 0;
}
/*
TRANS
*/
int p_trans(int d)
{
long len;
int32_t offset = 0;
if ( GetFileName() ) return 1;
if ( TestAtom(',') ){
if ( NeedConst( &offset ,"TRANS" ) ) return 1;
}
if ( LoadFile(transASCII, offset, 256, filename, &len ) ) return 1;
return 0;
}
/*
INCLUDE
*/
int p_include(int d)
{
int err;
if (Global.Files == MAX_INCLUDE) return Error(-INCLUDE_ERR,"");
if ( GetFileName() ) return 1;
KillSpace();
if ( atom ) return Error(GARBAGE_ERR,srcLine);
ClearLocals();
struct current_s save_current = Current;
Global.Files++;
LoadSource(filename);
Current.File = Global.Files;
err = mainloop(0);
Current = save_current;
return err;
}
/*
IBYTES
*/
int p_ibytes(int d)
{
int32_t offset = 0;
if ( GetFileName() ) return 1;
if ( TestAtom(',') ){
if ( NeedConst( &offset ,"IBYTES" ) ) return 1;
}
if ( Global.genesis ){
long len;
if ( LoadFile(code.Ptr, (long)offset, MAX_CODE_SIZE-code.Size, filename, &len ) ) return 1;
code.Ptr += len;
Global.pc += len;
code.Size += len;
}
return 0;
}
/*
PATH
*/
int p_path(int d)
{
int i;
KillSpace();
memset(filename, 0, 512);
if ( !atom ){
Global.Path[0] = 0;
return 0;
}
if ( atom != '"' ) return Error(SYNTAX_ERR,"");
GetAtom();
if ( !GetString( filename, '"' ) ) return Error(SYNTAX_ERR,"Missing '\"'");
i = (int)strlen(filename);
if ( i && filename[i-1] != '/'){
filename[i] = '/';
}
strcat(Global.Path,filename);
if ( chgPathToUpper ){
char *ptr = Global.Path;
char c;
while ( (c = *ptr) )
*ptr++ = toupper(c);
}
return 0;
}
/*
DS.B,DS.W,DS.L
*/
int p_definespace(int size)
{
int32_t l;
if ( NeedConst( &l ,"DS.x") ) return 1;
writeSameBytes( 0, l * size);
return 0;
}
/*
EQU
*/
int p_equ(int d)
{
int32_t l;
if ( NeedConst( &l, "EQU") ) return 1;
if ( ! Current.Label.len ){
Error(SYNTAX_ERR,"");
}
if ( (Current.Label.type & REGISTER) ){
Error(SYNTAX_ERR,"Cannot EQU a register label");
}
if ( (Current.Label.type & VARIABLE) == 0){
Current.LabelPtr->value = l;
}
Current.Label.type &= ~CODELABEL;
return 0;
}
/*
SET
*/
int p_set(int d)
{
int32_t l;
if ( NeedConst( &l, "SET") ) return 1;
if ( ! Current.Label.len ) Error(SYNTAX_ERR,"");
if ( (Current.Label.type & REGISTER) ){
Error(SYNTAX_ERR,"Cannot EQU a register label");
}
Current.LabelPtr->type |= VARIABLE;
Current.LabelPtr->type &= ~CODELABEL;
Current.LabelPtr->value = l;
Current.varModifier++;
// printf("(%s)%d\n",Current.LabelPtr->name,Current.LabelPtr->value);
return 0;
}
/*
IF
*/
#define PUSH_IF() Current.ifSave[++Current.ifCnt] = Current.ifFlag; Current.parseSave[Current.ifCnt] = Current.ParseOnly
#define POP_IF() Current.ParseOnly = Current.parseSave[Current.ifCnt];Current.ifFlag = Current.ifSave[Current.ifCnt--]
int p_if(int d)
{
int32_t l;
if ( Current.ifCnt+1 == MAX_IF ) return Error(TOOMANYIF_ERR,"");
PUSH_IF();
if ( Current.ifFlag ) {
TestAtom('#'); // skip a '#'
if ( NeedConst( &l, "IF") ) return 1;
Current.ifFlag = l != 0 ? 1 : 0;
Current.ParseOnly = 0;
} else {
Current.ParseOnly = 1;
}
return 0;
}
/*
IFDEF
*/
int p_ifdef(int d)
{
int32_t l;
label_t test;
if ( Current.ifCnt+1 == MAX_IF ) return Error(TOOMANYIF_ERR,"");
PUSH_IF();
if ( Current.ifFlag ) {
if ( GetLabel( &test ) ) return 1;
Current.ifFlag = (FindLabel( &test, &l ) != 0);
Current.ParseOnly = 0;
} else {
Current.ParseOnly = 1;
}
return 0;
}
/*
IFUNDEF
*/
int p_ifundef(int d)
{
int32_t l;
label_t test;
if ( Current.ifCnt+1 == MAX_IF ) return Error(TOOMANYIF_ERR,"");
PUSH_IF();
if ( Current.ifFlag ) {
if ( GetLabel( &test ) ) return 1;
Current.ifFlag = (FindLabel( &test, &l ) == 0);
Current.ParseOnly = 0;
} else {
Current.ParseOnly = 1;
}
return 0;
}
/*
IFVAR
*/
int p_ifvar(int d)
{
if ( Current.ifCnt+1 == MAX_IF ) return Error(TOOMANYIF_ERR,"");
PUSH_IF();
if ( Current.ifFlag ) {
KillSpace();
Current.ifFlag = (atom != 0) ? 1 : 0;
Current.ParseOnly = 0;
} else {
Current.ParseOnly = 1;
}
return 0;
}
/*
ELSE
*/
int p_else(int d)
{
if ( !Current.ParseOnly ){
Current.ifFlag ^= 1;
}
return 0;
}
/*
ENDIF
*/
int p_endif(int d)
{
if ( ! Current.ifCnt ) Error(ENDIF1_ERR,"");
POP_IF();
return 0;
}
/*
SWITCH
*/
int p_switch(int d)
{
int32_t l;
if ( Current.switchCnt ) return Error(SWITCH_ERR,"");
if ( NeedConst( &l, "SWITCH") ) return 1;
Current.switchCnt++;
Current.switchValue = l;
Current.switchFlag = 0;
Current.switchCaseMatch = 0;
return 0;
}
/*
CASE
*/
int p_case(int d)
{
int32_t l;
if ( !Current.switchCnt ) return Error(CASE_ERR,"");
if ( NeedConst( &l , "CASE") ) return 1;
Current.switchFlag = (l == Current.switchValue);
Current.switchCaseMatch |= Current.switchFlag;
// printf("case: %d %d\n",Current.switchFlag,Current.switchCaseMatch);
return 0;
}
/*
ELSES
*/
int p_default(int d)
{
if ( !Current.switchCnt) return Error(DEFAULT_ERR,"");
Current.switchFlag = !Current.switchCaseMatch;
// printf("elses: %d %d\n",Current.switchFlag,Current.switchCaseMatch);
return 0;
}
/*
ENDS
*/
int p_ends(int d)
{
if ( !Current.switchCnt ) return Error(ENDS_ERR,"");
Current.switchFlag = 1;
Current.switchCnt = 0;
return 0;
}
/*
ALIGN
*/
int p_align(int d)
{
int32_t l1,l;
if ( !(l = d) ){
l = 2;
KillSpace();
if ( atom ){
if ( NeedConst( &l,"ALIGN") ) return 1;
}
}
l1 = l - ((int32_t)Global.pc) % l;
if ( l != l1 ) writeSameBytes( 0, l1);
return 0;
}
/*
ECHO / FAIL
*/
int p_echo(int d)
{
label_t label;
int32_t l;
if ( !TestAtom('"') ) return Error(SYNTAX_ERR, __FUNCTION__);
if ( d ) {
if (Current.File >= 0){
if ( Current.Macro.Line ){
fprintf(my_stderr,"FAIL: %s:%d:Macro-Line %5d:<%s>:",
file_list[Current.File].name,Current.Line,
Current.Macro.Line,file_list[Current.Macro.File].name);
}
} else {
fprintf(my_stderr,"FAIL: %s:%5d :",
file_list[Current.File].name,Current.Line);
}
}
while ( atom != '"' ){
if ( atom == '%' && next_atom != '%'){
int mode = 0;
GetAtom();
if ( atom == 'H' || atom == 'h' || atom == 'X' || atom == 'x'){
mode = 1;
l = 0xdead;
}
else if ( atom == 'D' || atom == 'd' ){
mode = 2;
l = 12345678;
}
else {
return Error(SYNTAX_ERR, __FUNCTION__ );
}
GetAtom();
if ( GetLabel( &label) ) return 1;
FindLabel( &label, &l );
if ( mode == 1 ){
fprintf(my_stderr,"$%x",l);
}
else if ( mode == 2 ){
fprintf(my_stderr,"%d",l);
}
}
else {
fputc(atom,my_stderr);
GetAtom();
}
}
fputc('\n',my_stderr);
if ( d ) return Error(FAIL_ERR,"");
return 0;
}
/*
REPT
*/
int p_rept(int d)
{
int32_t l;
if ( Current.rept ) return Error(REPT1_ERR,"");
if ( NeedConst( &l , "REPT") ) return 1;
if ( l <= 0 ) return Error(REPT2_ERR,"");
Current.reptValue = l;
Current.reptStart = Current.SrcPtr;
Current.reptLine = Current.Line;
Current.rept++;
return 0;
}
int p_endr(int d)
{
if ( ! Current.rept ) return Error(REPT2_ERR,"");
if ( --Current.reptValue ){
Current.SrcPtr = Current.reptStart;
Current.Line = Current.reptLine;
} else {
Current.rept--;
}
return 0;
}
/*
LIST
*/
int p_list(int d)
{
int32_t l;
if ( NeedConst( &l , "LIST" ) ) return 1;
if ( l <= 0 ) l = 0;
if ( l > 3 ) l = 3;
verbose = l;
return 0;
}
/*
ISYMS
*/
int p_isyms(int d)
{
return Error(-ISYMS_ERR,"ISYMS is no longer supported");
}
/*
GLOBAL
*/
int p_global(int d)
{
label_t label;
label_t *plabel;
int32_t l;
do{
if ( GetLabel( &label ) ) return 1;
if ( (plabel = FindLabel( &label, &l)) == NULL ){
int solved;
label.type = GLOBAL|UNSOLVED;
label.value = Global.pc;
DefineLabel( &label, &solved);
} else {
if ( plabel->type & LOCAL ) return Error(SYNTAX_ERR,"");
plabel->type |= GLOBAL;
}
}while (TestAtom(','));
return 0;
}
int p_mode(int modus)
{
sourceMode = modus;
if ( modus == JAGUAR_GPU ){
jaguar_mode = 0;
} else if ( modus == JAGUAR_DSP ){
jaguar_mode = 1;
} else {
jaguar_mode = -1;
}
// printf("Switching to mode %d\n",modus);
return 0;
}
int p_regtop(int dummy)
{
int32_t l;
if ( sourceMode == LYNX ) {
return Error(SYNTAX_ERR,"REGTOP only in RISC modes");
}
if ( NeedConst( &l, "REGTOP") ) return 1;
if ( (l < 0 || l > 31) ) Error(REG_ERR,"");
risc[jaguar_mode].regAllocStart = l;
return 0;
}
int p_regmap(int dummy)
{
int i;
(void)dummy;
if ( sourceMode == LYNX ) {
return Error(SYNTAX_ERR,"REGMAP only in RISC modes");
}
if ( jaguar_mode == 0 ){
fprintf(my_stderr,"Reg %-32s %-32s\n","Bank0 - GPU","Bank 1 - GPU");
} else {
fprintf(my_stderr,"Reg %-32s %-32s\n","Bank0 - DSP","Bank 1 - DSP");
}
for(i = 31; i >= 0; --i ){
if ( risc[jaguar_mode].reg_flag[i] || risc[jaguar_mode].reg_flag[i+32] ){
fprintf(my_stderr," %2d ",i);
if ( risc[jaguar_mode].reg_flag[i] ){
fprintf(my_stderr, "%-32s ",risc[jaguar_mode].reg_label[i]->name);
} else {
fprintf(my_stderr, "%-32s "," ");
}
if ( risc[jaguar_mode].reg_flag[i+32] ){
fprintf(my_stderr, "%-32s ",risc[jaguar_mode].reg_label[i+32]->name);
} else {
fprintf(my_stderr, "%-32s "," ");
}
fprintf(my_stderr, "\n");
}
}
return 0;
}
int p_reg(int d)
{
int32_t l;
int i,o;
int allowRedefine;
if ( sourceMode == LYNX ) {
return Error(SYNTAX_ERR,"REG only in RISC modes");
}
if ( ! Current.Label.len ) Error(SYNTAX_ERR,"");
if ( TestAtomOR('r','R') ){
if ( getdec32( &l ) == EXPR_ERR ) return Error(SYNTAX_ERR,"");
if ( l > 31 ) return Error(SYNTAX_ERR,"");
} else {
if ( NeedConst( &l, "REG") ) return 1;
}
if ( (l < 0 || l > 31) && l != 99 ) Error(REG_ERR,"");
if ( (Current.LabelPtr->type == REGISTER ) &&
(Current.LabelPtr->file != -1) ) return Error(REG1_ERR,"");
if ( Current.LabelPtr->type != NORMAL &&
Current.LabelPtr->type != REGISTER ) return Error(SYNTAX_ERR,"");
o = l;
i = (int)strlen(Current.LabelPtr->name);
if ( i > 2 &&
Current.LabelPtr->name[i-2] == '.' &&
Current.LabelPtr->name[i-1] == 'a'){
o += 32;
}
allowRedefine = TestAtom('!');
if ( (o == 99 || o == (99+32)) && allowRedefine ){
return Error(SYNTAX_ERR,
"'!' not allowed with automatic register allocation.");
}
if ( o == 99 || o == (99+32) ){
int end = o-99;
i = risc[jaguar_mode].regAllocStart;
if ( o == 99+32 ){
i+=32;
}
o = -1;
for( ; i >= end; --i){
if ( risc[jaguar_mode].reg_flag[i] == 0 ){
o = i;
l = o & 31;
break;
}
}
if ( o == -1 ){
return Error(SYNTAX_ERR,"No more free register");
}
}
if ( risc[jaguar_mode].reg_flag[o] && allowRedefine == 0 ) {
char help[256];
sprintf(help,"Register already defined: %s:%5d",
file_list[risc[jaguar_mode].reg_file[o]].name,
risc[jaguar_mode].reg_line[o]);