| |
| #include "supp.h" |
| |
| |
| static debug_prints = 0; |
| |
| static char FILE_[]=__FILE__; |
| |
| /* Name and copyright. */ |
| char cg_copyright[]="vbcc code-generator for Pokemon Mini V0.019 (c) in 2011 by zoranc"; |
| |
| |
| /* Commandline-flags the code-generator accepts: |
| 0: just a flag |
| VALFLAG: a value must be specified |
| STRINGFLAG: a string can be specified |
| FUNCFLAG: a function will be called |
| apart from FUNCFLAG, all other versions can only be specified once */ |
| int g_flags[MAXGF]= { FUNCFLAG, STRINGFLAG, STRINGFLAG, STRINGFLAG }; |
| |
| /* the flag-name, do not use names beginning with l, L, I, D or U, because |
| they collide with the frontend */ |
| char *g_flags_name[MAXGF] = { "h", "ram-vars", "id", "name" }; |
| |
| /* the results of parsing the command-line-flags will be stored here */ |
| union ppi g_flags_val[MAXGF]; |
| |
| #define HELP_DUMP (g_flags[0]&USEDFLAG) |
| #define RAM_VARS_ADDR ((g_flags[1]&USEDFLAG)?address_number(g_flags_val[1].p):0x14E0) |
| #define GAME_ID ((g_flags[2]&USEDFLAG)?g_flags_val[2].p:"PKCC") |
| #define GAME_NAME ((g_flags[3]&USEDFLAG)?g_flags_val[3].p:"PokeCCbyZC") |
| |
| |
| |
| /* Alignment-requirements for all types in bytes. */ |
| zmax align[MAX_TYPE+1]; |
| |
| /* Alignment that is sufficient for every object. */ |
| zmax maxalign; |
| |
| /* Sizes of all elementary types in bytes. */ |
| zmax sizetab[MAX_TYPE+1]; |
| |
| /* Minimum and Maximum values each type can have. */ |
| /* Must be initialized in init_cg(). */ |
| zmax t_min[MAX_TYPE+1]; |
| zumax t_max[MAX_TYPE+1]; |
| zumax tu_max[MAX_TYPE+1]; |
| |
| /* CHAR_BIT of the target machine. */ |
| zmax char_bit; |
| |
| /* Names of all registers. */ |
| char *regnames[]={"noreg","x","y", "ba", "hl"}; |
| char *regnames_low[]={"noreg","noreg","noreg", "a", "l"}; |
| char *regnames_high[]={"noreg","noreg","noreg", "b", "h"}; |
| |
| /* The Size of each register in bytes. */ |
| zmax regsize[MAXR+1]; |
| |
| /* Type which can store each register. */ |
| struct Typ *regtype[MAXR+1]; |
| |
| /* regsa[reg]!=0 if a certain register is allocated and should */ |
| /* not be used by the compiler pass. */ |
| int regsa[MAXR+1]; |
| |
| /* Specifies which registers may be scratched by functions. */ |
| int regscratch[MAXR+1]={0,1,1}; |
| |
| |
| /****************************************/ |
| /* Some private data and functions. */ |
| /****************************************/ |
| |
| static long malign[MAX_TYPE+1]= {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}; |
| static long msizetab[MAX_TYPE+1]={0,1,1,2,4,4,4,8,8,0,2,0,0,0,2,0}; |
| |
| struct Typ ityp={SHORT},ltyp={LONG}; |
| |
| static int ix = 1,iy = 2; |
| static int q1reg,q2reg,zreg; |
| static int ba = 3,hl = 4; /* temporary gprs */ |
| |
| |
| /* return-instruction */ |
| static char *ret; |
| |
| static char *marray[]={"__POKEMINI__",0}; |
| |
| #define isreg(x) ((p->x.flags&(REG|DREFOBJ))==REG) |
| #define isconst(x) ((p->x.flags&(KONST|DREFOBJ))==KONST) |
| |
| #define ISLWORD(t) ((t&NQ)==LONG||(t&NQ)==FLOAT) |
| #define ISHWORD(t) ((t&NQ)==INT) |
| |
| |
| /* assembly-prefixes for labels and external identifiers */ |
| static char *labprefix="vbcc___l",*idprefix=""; |
| |
| /* has to be 4 bytes long */ |
| static char game_id[10] = "PKCC"; |
| /* can be up to 12 bytes long */ |
| static char game_name[20] = "PokeCCbyZC"; |
| |
| static void emit_irq_vectors(FILE *f); |
| static void emit_unised_irq_labels(FILE *f); |
| static int used_interrupt[26]; |
| static char *int_handler_prefix="vbcc___interrupt_handler_"; |
| |
| static int start_ram_vars = 0x14E0; |
| static int ram_rom_distance = 0x11D0; |
| static int end_ram_vars; |
| static int last_was_rom = 1; |
| static int ram_vars_initialized = 0; |
| |
| /* Names of target-specific variable attributes. */ |
| char *g_attr_name[]={"__interrupt", "__rom", "__align8", "__align64", 0}; |
| #define INTERRUPT 1 |
| #define ROM 2 |
| #define ALIGN8 4 |
| #define ALIGN64 8 |
| |
| #include "emit.h" |
| |
| |
| #define dt(t) (((t)&UNSIGNED)?udt[(t)&NQ]:sdt[(t)&NQ]) |
| static char *sdt[MAX_TYPE+1]={"??","c","s","i","l","ll","f","d","ld","v","p"}; |
| static char *udt[MAX_TYPE+1]={"??","uc","us","ui","ul","ull","f","d","ld","v","p"}; |
| |
| |
| //static char *ccs[]={"eq","ne","lt","ge","le","gt",""}; |
| static char *ccs2[]={"nz","z","ge","l","g","le",""}; |
| //static char *uccs2[]={"nzb","zb","ge","l","g","le",""}; |
| static char *uccs2[]={"nz","z","nc","c","c","nc",""}; |
| //static char *uccs2[]={"nzb","zb","no","o","ns","s",""}; |
| static char *logicals[]={"or","xor","and"}; |
| static char *arithmetics[]={"slw","srw","add","sub","mullw","divw","mod"}; |
| |
| static void emit_obj(FILE *f,struct obj *p,int t); |
| |
| static long localsize, rsavesize, /*argsize,*/ pushed; |
| |
| #define NOT_IMP() not_implemented((f),(__LINE__)) |
| void not_implemented(FILE *f, int line) |
| { |
| emit(f, ";\tNOT IMPLEMENTED: %s LINE: %d !!!\n", __FILE__, line); |
| } |
| |
| /* calculate the actual current offset of an object relativ to the |
| stack-pointer; we use a layout like this: |
| ------------------------------------------------ |
| | arguments to this function | |
| ------------------------------------------------ |
| | return-address [size=3] | |
| ------------------------------------------------ |
| | caller-save registers [size=rsavesize] | |
| ------------------------------------------------ |
| | local variables [size=localsize] | |
| ------------------------------------------------ |
| | arguments to called functions [size=argsize] | |
| ------------------------------------------------ |
| All sizes will be aligned as necessary. |
| In the case of FIXED_SP, the stack-pointer will be adjusted at |
| function-entry to leave enough space for the arguments and have it |
| aligned to 16 bytes. Therefore, when calling a function, the |
| stack-pointer is always aligned to 16 bytes. |
| For a moving stack-pointer, the stack-pointer will usually point |
| to the bottom of the area for local variables, but will move while |
| arguments are put on the stack. |
| |
| This is just an example layout. Other layouts are also possible. |
| */ |
| |
| static long real_offset(struct obj *o) |
| { |
| long off=zm2l(o->v->offset); |
| |
| if(off<0){ |
| /* function parameter */ |
| off=localsize+rsavesize+3-off-zm2l(maxalign); |
| } |
| |
| off+=pushed; |
| |
| off+=zm2l(o->val.vmax); |
| |
| return off; |
| } |
| |
| static void emit_irq_vectors(FILE *f) |
| { |
| int i; |
| for(i=0; i<26; i++) |
| { |
| emit(f, ".orgfill 0x%x\n", 0x2102 + 6 * i); |
| emit(f, "\tjmp\t%s%d\n", int_handler_prefix, i); |
| } |
| |
| used_interrupt[0] = 1; |
| } |
| |
| static void emit_unised_irq_labels(FILE *f) |
| { |
| int i; |
| for(i=0; i<26; i++) |
| { |
| if(!used_interrupt[i]) |
| emit(f, "%s%d:\n", int_handler_prefix, i); |
| } |
| } |
| |
| char *flags_verbose(int flags, char *str) |
| { |
| static char *flag_str[] = {"KONST", "VAR", "", "", "", "DREFOBJ", "REG", "VARADR"}; |
| int i; |
| |
| strcpy(str, ""); |
| |
| for(i=0; i<8; i++) |
| { |
| if(flags & (1 << i)) |
| { |
| if(strlen(str)!=0 && strlen(flag_str[i])!=0) |
| strcat(str, "|"); |
| strcat(str, flag_str[i]); |
| } |
| } |
| |
| return str; |
| } |
| |
| /* generate code to load the address of a variable into register r */ |
| static void load_address(FILE *f,int r,struct obj *o,int type) |
| /* Generates code to load the address of a variable into register r. */ |
| { |
| char str[100]; |
| if(debug_prints) |
| emit(f, ";\tload_address(reg:%s, flags:%s, type:%s)\n", regnames[r], flags_verbose(o->flags, str), typname[type&NQ]); |
| if(!(o->flags&VAR)) ierror(0); |
| if(o->v->storage_class==AUTO||o->v->storage_class==REGISTER) |
| { |
| long off=real_offset(o); |
| emit(f,"\tmov\t%s,sp\n",regnames[r]); |
| if(off) |
| emit(f,"\tadd\t%s,%ld\n",regnames[r],off); |
| } |
| else |
| { |
| emit(f,"\tmov\t%s,",regnames[r]); |
| emit_obj(f,o,type); |
| emit(f,"\n"); |
| } |
| } |
| /* Generates code to load a memory object into register r. tmp is a |
| general purpose register which may be used. tmp can be r. */ |
| static void load_reg(FILE *f, int r, struct obj *o, int type, int type2) |
| { |
| char str[100]; |
| if(debug_prints) |
| emit(f, ";\tload_reg(reg:%s, flags:%s, type:%s, type2:%s)\n", regnames[r], flags_verbose(o->flags, str), typname[type&NQ], (type2&NQ)?typname[type2&NQ]:""); |
| type&=NU; |
| if(o->flags&VARADR) |
| { |
| load_address(f,r,o,POINTER); |
| } |
| else |
| { |
| if((o->flags&(REG|DREFOBJ))==REG&&o->reg==r) |
| return; |
| if( msizetab[(type&NQ)] == 1 && |
| !((o->flags==VAR) /*&& (o->v->storage_class==AUTO||o->v->storage_class==REGISTER)*/)) |
| { |
| /* TODO */ |
| /* optimise this like in the store_reg() */ |
| int is_16_reg = ((o->flags&(REG|DREFOBJ)) == REG) && msizetab[type2&NQ] == 2; |
| if(r == ba || r == hl) |
| { |
| /* handle case of transfer 16-bit reg -> 8-bit reg*/ |
| emit(f,"\tmov\t%s,",is_16_reg?regnames[r]:regnames_low[r]); |
| emit_obj(f,o,type); |
| emit(f,"\n"); |
| } |
| else if(r==ix && ((o->flags&(REG|DREFOBJ)) == REG)) |
| { |
| if(!is_16_reg) |
| emit(f, "\tmov\t%s, 0\n", regnames_high[o->reg]); // or maybe expand sign? |
| emit(f, "\tmov\tx,"); |
| emit_obj(f,o,type); |
| emit(f,"\n"); |
| } |
| else |
| NOT_IMP(); |
| } |
| else |
| { |
| if((o->flags==VAR) && type==ARRAY) |
| { |
| emit(f,"\tmov\t%s,",regnames[r]); |
| o->flags |= VARADR; |
| emit_obj(f,o,type); |
| o->flags &= ~VARADR; |
| emit(f,"\n"); |
| } |
| else |
| { |
| emit(f,"\tmov\t%s,",regnames[r]); |
| emit_obj(f,o,type); |
| emit(f,"\n"); |
| } |
| } |
| } |
| } |
| |
| static int free_index_reg() |
| { |
| if(!regs[ix]) return ix; |
| if(!regs[iy]) return iy; |
| return 0; |
| } |
| |
| /* Generates code to store register r into memory object o. */ |
| static void store_reg(FILE *f,int r,struct obj *o,int type) |
| { |
| char str[100]; |
| if(debug_prints) |
| emit(f, ";\tstore_reg(reg:%s, flags:%s, type:%s)\n", regnames[r], flags_verbose(o->flags, str), typname[type&NQ]); |
| type&=NQ; |
| if( msizetab[(type&NQ)] == 1 ) |
| { |
| if(r == ba) |
| { |
| if((o->flags==VAR) && (o->v->storage_class==AUTO||o->v->storage_class==REGISTER)) |
| { |
| int ind_reg = free_index_reg(); |
| long off = real_offset(o); |
| |
| if(off == 0) |
| { |
| emit(f, "\tinc\tsp\n"); |
| emit(f, "\tpush\ta\n"); |
| } |
| else if(ind_reg) |
| { |
| emit(f, "\tmov\t%s,sp\n", regnames[ind_reg]); |
| emit(f, "\tmov\t[%s+%ld],%s\n", regnames[ind_reg], off, regnames_low[r]); |
| } |
| else |
| { |
| emit(f,"\tmov\thl,sp\n"); |
| emit(f,"\tadd\thl,%ld\n",off); |
| emit(f,"\tmov\t[hl],%s\n", regnames_low[r]); |
| } |
| } |
| else |
| { |
| emit(f,"\tmov\t"); |
| emit_obj(f,o,type); |
| emit(f,",%s\n",regnames_low[r]); |
| } |
| } |
| else if(r==ix && (o->flags==VAR)) |
| { |
| emit(f, "\tmov\thl,"); |
| emit_obj(f,o,type); |
| emit(f, "\n"); |
| emit(f, "\tmov\th, 0\n"); // maybe extend sign? |
| emit(f, "\tmov\tx,hl\n"); |
| } |
| else |
| NOT_IMP(); |
| } |
| else |
| { |
| emit(f,"\tmov\t"); |
| emit_obj(f,o,type); |
| emit(f,",%s\n",regnames[r]); |
| } |
| } |
| |
| |
| /* Does some pre-processing like fetching operands from memory to |
| registers etc. */ |
| static struct IC *preload(FILE *f,struct IC *p) |
| { |
| int r; |
| |
| if(debug_prints) |
| emit(f, ";\tpreload() - start\n"); |
| |
| if(isreg(q1)) |
| q1reg=p->q1.reg; |
| else |
| q1reg=0; |
| |
| if(isreg(q2)) |
| q2reg=p->q2.reg; |
| else |
| q2reg=0; |
| |
| if(isreg(z) && ADD <= p->code && p->code <= SUB) |
| { |
| zreg=p->z.reg; |
| } |
| else |
| { |
| /* |
| if(ISFLOAT(ztyp(p))) |
| zreg=f1; |
| else |
| */ |
| zreg=ba; |
| } |
| if((p->q1.flags&(DREFOBJ|REG))==DREFOBJ&&!p->q1.am) |
| { |
| if(debug_prints) |
| emit(f, ";\tpreload() - q1\n"); |
| p->q1.flags&=~DREFOBJ; |
| load_reg(f,hl,&p->q1,POINTER,0); |
| p->q1.reg=hl; |
| p->q1.flags|=(REG|DREFOBJ); |
| p->q1.flags&=~KONST; |
| } |
| if(p->q1.flags/* &&LOAD_STORE */&&!isreg(q1)) |
| { |
| if(debug_prints) |
| emit(f, ";\tpreload() - q1a\n"); |
| /* |
| if(ISFLOAT(q1typ(p))) |
| q1reg=f1; |
| else |
| */ |
| q1reg=ba; |
| load_reg(f,q1reg,&p->q1,q1typ(p),0); |
| p->q1.reg=q1reg; |
| p->q1.flags=REG; |
| } |
| |
| if((p->q2.flags&(DREFOBJ|REG))==DREFOBJ&&!p->q2.am) |
| { |
| if(debug_prints) |
| emit(f, ";\tpreload() - q2\n"); |
| p->q2.flags&=~DREFOBJ; |
| load_reg(f,hl,&p->q2,POINTER, 0); |
| p->q2.reg=hl; |
| p->q2.flags|=(REG|DREFOBJ); |
| p->q1.flags&=~KONST; |
| } |
| if(p->q2.flags/* &&LOAD_STORE */&&!isreg(q2)) |
| { |
| if(debug_prints) |
| emit(f, ";\tpreload() - q2a\n"); |
| /* |
| if(ISFLOAT(q2typ(p))) |
| q2reg=f2; |
| else |
| */ |
| q2reg=hl; |
| load_reg(f,q2reg,&p->q2,q2typ(p), 0); |
| p->q2.reg=q2reg; |
| p->q2.flags=REG; |
| } |
| |
| if(debug_prints) |
| emit(f, ";\tpreload() - end\n"); |
| |
| return p; |
| } |
| |
| /* save the result (in zreg) into p->z */ |
| void save_result(FILE *f,struct IC *p) |
| { |
| char str[100]; |
| if(debug_prints) |
| emit(f, ";\tsave_result(flags:%s)\n", flags_verbose(p->z.flags, str)); |
| if((p->z.flags&(REG|DREFOBJ))==DREFOBJ&&!p->z.am){ |
| p->z.flags&=~DREFOBJ; |
| load_reg(f,hl,&p->z,POINTER, 0); |
| p->z.reg=hl; |
| p->z.flags|=(REG|DREFOBJ); |
| p->z.flags&=~KONST; |
| } |
| if(isreg(z)){ |
| if(p->z.reg!=zreg) |
| emit(f,"\tmov\t%s,%s\n",regnames[p->z.reg],regnames[zreg]); |
| }else{ |
| store_reg(f,zreg,&p->z,ztyp(p)); |
| } |
| } |
| |
| /* prints an object */ |
| static void emit_obj(FILE *f,struct obj *p,int t) |
| { |
| /* |
| if(p->am){ |
| if(p->am->flags&GPR_IND) emit(f,"(%s,%s)",regnames[p->am->offset],regnames[p->am->base]); |
| if(p->am->flags&IMM_IND) emit(f,"(%ld,%s)",p->am->offset,regnames[p->am->base]); |
| return; |
| } |
| */ |
| if((p->flags&(KONST|DREFOBJ))==(KONST|DREFOBJ)) |
| { |
| emitval(f,&p->val,p->dtyp&NU); |
| return; |
| } |
| if((p->flags&DREFOBJ)||(p->flags&(VAR|VARADR))==VAR) emit(f,"["); |
| if(p->flags®) |
| { |
| emit(f,"%s",regnames[p->reg]); |
| } |
| else if(p->flags&VAR) |
| { |
| //emit(f,"{%d,%d}", p->v->storage_class, p->flags); |
| if(p->v->storage_class==AUTO||p->v->storage_class==REGISTER) |
| emit(f,"sp+%ld",real_offset(p)); |
| else |
| { |
| //emit(f,"["); |
| if(!zmeqto(l2zm(0L),p->val.vmax)) |
| { |
| emitval(f,&p->val,LONG); |
| emit(f,"+"); |
| } |
| if(p->v->storage_class==STATIC) |
| { |
| emit(f,"%s%ld",labprefix,zm2l(p->v->offset)); |
| } |
| else |
| { |
| emit(f,"%s%s",idprefix,p->v->identifier); |
| } |
| //emit(f,"]"); |
| } |
| } |
| if(p->flags&KONST) |
| { |
| emitval(f,&p->val,t&NU); |
| } |
| if((p->flags&DREFOBJ)||(p->flags&(VAR|VARADR))==VAR) emit(f,"]"); |
| } |
| |
| /* Yields log2(x)+1 or 0. */ |
| static long pof2(zumax x) |
| { |
| zumax p;int ln=1; |
| p=ul2zum(1L); |
| while(ln<=32&&zumleq(p,x)){ |
| if(zumeqto(x,p)) return ln; |
| ln++;p=zumadd(p,p); |
| } |
| return 0; |
| } |
| |
| /* emit a logical instruction */ |
| static void emit_logical(FILE *f, int c, struct obj *q, int t) |
| { |
| if(zreg==ba) |
| { |
| emit(f, "\tpush\t%s\n", regnames[q->reg]); |
| emit(f, "\tmov\thl,sp\n"); |
| emit(f, "\t%s\ta,[hl]\n", logicals[c-OR]); |
| emit(f, "\txchg\ta,b\n"); |
| emit(f, "\tinc\thl\n"); |
| emit(f, "\t%s\ta,[hl]\n", logicals[c-OR]); |
| emit(f, "\txchg\ta,b\n"); |
| emit(f, "\tpop\t%s\n", regnames[q->reg]); |
| } |
| else |
| { |
| NOT_IMP(); |
| emit(f,";\t%s\t%s,",logicals[c-OR],regnames[zreg]); |
| emit_obj(f,q,t); |
| emit(f,"\n"); |
| } |
| } |
| |
| /* emit a shift instruction */ |
| static void emit_shift(FILE *f, int c, struct obj *q, int t) |
| { |
| int l1, l2, l3; |
| l1 = ++label; |
| l2 = ++label; |
| l3 = ++label; |
| if(zreg==ba) |
| { |
| emit(f, "\tcmp\t%s,16\n",regnames[q->reg]); |
| emit(f, "\tjc\t%s%d\n",labprefix,l1); |
| if(c == RSHIFT && !(t&UNSIGNED)) |
| emit(f, "\tmov\tba,0xffff\n"); |
| else |
| emit(f, "\tmov\tba, 0\n"); |
| emit(f, "\tjmp\t%s%d\n",labprefix,l3); |
| emit(f, "%s%d:\n",labprefix,l1); |
| emit(f, "\tcmp\t%s,0\n",regnames[q->reg]); |
| emit(f, "\tjz\t%s%d\n",labprefix,l3); |
| emit(f, "%s%d:\n",labprefix,l2); |
| if(c == LSHIFT) |
| { |
| emit(f, "\tshl\ta\n"); |
| emit(f, "\trolc\tb\n"); |
| } |
| else |
| { |
| if (t&UNSIGNED) |
| emit(f, "\tshr\tb\n"); |
| else |
| emit(f, "\tsar\tb\n"); |
| emit(f, "\trorc\ta\n"); |
| } |
| emit(f, "\tdec\t%s\n", regnames[q->reg]); |
| emit(f, "\tjnz\t%s%d\n",labprefix,l2); |
| emit(f, "%s%d:\n",labprefix,l3); |
| } |
| else |
| { |
| NOT_IMP(); |
| emit(f,";\t%s\t%s,", arithmetics[c-LSHIFT], regnames[zreg]); |
| emit_obj(f,q,t); |
| emit(f,"\n"); |
| } |
| } |
| static void emit_move_array(FILE *f, struct obj *z, struct obj *q, int size) |
| { |
| int l1; |
| l1 = ++label; |
| emit(f,"\tmov\thl,%d\n", size); |
| if(regs[ix]) |
| { |
| pushed+=2; |
| emit(f, "\tpush\tx\n"); |
| } |
| if(regs[iy]) |
| { |
| pushed+=2; |
| emit(f, "\tpush\ty\n"); |
| } |
| load_reg(f, iy, q, POINTER, 0); |
| z->flags |= VARADR; |
| load_reg(f, ix, z, POINTER, 0); |
| z->flags &= ~VARADR; |
| |
| emit(f, "%s%d:\n",labprefix,l1); |
| emit(f, "\tmov\t[x],[y]\n"); |
| emit(f, "\tinc\tx\n"); |
| emit(f, "\tinc\ty\n"); |
| emit(f, "\tdec\thl\n"); |
| emit(f, "\tjnzb\t%s%d\n",labprefix,l1); |
| |
| if(regs[iy]) |
| { |
| pushed-=2; |
| emit(f, "\tpop\ty\n"); |
| } |
| if(regs[ix]) |
| { |
| pushed-=2; |
| emit(f, "\tpop\tx\n"); |
| } |
| } |
| |
| /* generates the function entry code */ |
| static void function_top(FILE *f,struct Var *v,long offset) |
| { |
| emit(f,"\n"); |
| rsavesize=0; |
| if(v->storage_class==EXTERN) |
| { |
| /* |
| if((v->flags&(INLINEFUNC|INLINEEXT))!=INLINEFUNC) |
| emit(f,";\t.global\t%s%s\n",idprefix,v->identifier); |
| */ |
| emit(f,"%s%s:\n",idprefix,v->identifier); |
| } |
| else |
| emit(f,"%s%ld:\n",labprefix,zm2l(v->offset)); |
| if(offset) |
| emit(f,"\tsub\tsp,%ld\n", offset); |
| } |
| |
| /* generates the function exit code */ |
| static void function_bottom(FILE *f,struct Var *v,long offset) |
| { |
| if(offset) |
| emit(f,"\tadd\tsp,%ld\n", offset); |
| emit(f,ret); |
| } |
| |
| int address_number(char *str) |
| { |
| if(strncmp(str, "0x", 2)==0) |
| return strtol(str, 0, 16); |
| else |
| return atoi(str); |
| } |
| |
| /****************************************/ |
| /* End of private data and functions. */ |
| /****************************************/ |
| |
| void help(char *str) |
| { |
| printf("Parameters:\n"); |
| printf(" -help This help screen \n"); |
| printf(" -ram-vars=<ADDR> Address from which will start ram variables. \n"); |
| printf(" Default value is 0x14E0 \n"); |
| printf(" -id=<ID_STR> Identificatior of the game. Maximum 4 characters long.\n"); |
| printf(" -name=<NAME_STR> Name of the game. Maximum 12 characters. \n"); |
| fflush(stdout); |
| exit(0); |
| } |
| |
| int reg_pair(int r,struct rpair *p) |
| /* Returns 0 if the register is no register pair. If r */ |
| /* is a register pair non-zero will be returned and the */ |
| /* structure pointed to p will be filled with the two */ |
| /* elements. */ |
| { |
| return 0; |
| } |
| |
| |
| int init_cg(void) |
| /* Does necessary initializations for the code-generator. Gets called */ |
| /* once at the beginning and should return 0 in case of problems. */ |
| { |
| int i; |
| /* Initialize some values which cannot be statically initialized */ |
| /* because they are stored in the target's arithmetic. */ |
| maxalign=l2zm(1L); |
| char_bit=l2zm(8L); |
| for(i=0;i<=MAX_TYPE;i++) |
| { |
| sizetab[i]=l2zm(msizetab[i]); |
| align[i]=l2zm(malign[i]); |
| } |
| for(i=1;i<=MAXR;i++) |
| { |
| regsize[i]=l2zm(2L);regtype[i]=&ityp; |
| } |
| |
| /* Initialize the min/max-settings. Note that the types of the */ |
| /* host system may be different from the target system and you may */ |
| /* only use the smallest maximum values ANSI guarantees if you */ |
| /* want to be portable. */ |
| /* That's the reason for the subtraction in t_min[INT]. Long could */ |
| /* be unable to represent -2147483648 on the host system. */ |
| t_min[CHAR]=l2zm(-128L); |
| t_min[SHORT]=l2zm(-32768L); |
| t_min[INT]=t_min[SHORT]; |
| t_min[LONG]=zmsub(l2zm(-2147483647L),l2zm(1L)); |
| t_min[LLONG]=zmlshift(l2zm(1L),l2zm(63L)); |
| t_min[MAXINT]=t_min(LLONG); |
| t_max[CHAR]=ul2zum(127L); |
| t_max[SHORT]=ul2zum(32767UL); |
| t_max[INT]=t_max[SHORT]; |
| t_max[LONG]=ul2zum(2147483647UL); |
| t_max[LLONG]=zumrshift(zumkompl(ul2zum(0UL)),ul2zum(1UL)); |
| t_max[MAXINT]=t_max(LLONG); |
| tu_max[CHAR]=ul2zum(255UL); |
| tu_max[SHORT]=ul2zum(65535UL); |
| tu_max[INT]=tu_max[SHORT]; |
| tu_max[LONG]=ul2zum(4294967295UL); |
| tu_max[LLONG]=zumkompl(ul2zum(0UL)); |
| tu_max[MAXINT]=t_max(UNSIGNED|LLONG); |
| |
| start_ram_vars = RAM_VARS_ADDR; |
| |
| memset(game_id, 0, sizeof(game_id)); |
| strncpy(game_id, GAME_ID, 4); |
| |
| memset(game_name, 0, sizeof(game_id)); |
| strncpy(game_name, GAME_NAME, 12); |
| |
| target_macros=marray; |
| |
| for(i=0; i<26; i++) |
| used_interrupt[i] = 0; |
| |
| return 1; |
| } |
| |
| int dangerous_IC(struct IC *p) |
| /* Returns zero if the IC p can be safely executed */ |
| /* without danger of exceptions or similar things. */ |
| /* vbcc may generate code in which non-dangerous ICs */ |
| /* are sometimes executed although control-flow may */ |
| /* never reach them (mainly when moving computations */ |
| /* out of loops). */ |
| /* Typical ICs that generate exceptions on some */ |
| /* machines are: */ |
| /* - accesses via pointers */ |
| /* - division/modulo */ |
| /* - overflow on signed integer/floats */ |
| { |
| int c=p->code; |
| if((p->q1.flags&DREFOBJ)||(p->q2.flags&DREFOBJ)||(p->z.flags&DREFOBJ)) |
| return 1; |
| if((c==DIV||c==MOD)&&!isconst(q2)) |
| return 1; |
| return 0; |
| } |
| |
| int freturn(struct Typ *t) |
| /* Returns the register in which variables of type t are returned. */ |
| /* If the value cannot be returned in a register returns 0. */ |
| { |
| int f=t->flags&NQ; |
| if(ISSCALAR(f)&&((f&NQ)==INT||(f&NQ)==SHORT||f==CHAR)) |
| return ix; |
| return 0; |
| } |
| |
| int regok(int r,int t,int mode) |
| /* Returns 0 if register r cannot store variables of */ |
| /* type t. If t==POINTER and mode!=0 then it returns */ |
| /* non-zero only if the register can store a pointer */ |
| /* and dereference a pointer to mode. */ |
| { |
| if(!ISSCALAR(t)) return 0; |
| return 1; |
| } |
| |
| int shortcut(int c,int t) |
| { |
| /* TODO */ |
| /* enable those for more optimised code */ |
| /*if(c==COMPARE||c==AND||c==OR||c==XOR) return 1;*/ |
| return 0; |
| } |
| |
| |
| int must_convert(int o,int t,int const_expr) |
| /* Returns zero if code for converting np to type t */ |
| /* can be omitted. */ |
| { |
| int op=o&NQ,tp=t&NQ; |
| if(op==tp) return 0; |
| if(ISHWORD(op)&&ISHWORD(tp)) return 0; |
| if(ISFLOAT(op)||ISFLOAT(tp)) return 1; |
| if(ISLWORD(op)&&ISLWORD(tp)) return 0; |
| return 1; |
| } |
| |
| void gen_ds(FILE *f,zmax size,struct Typ *t) |
| /* This function has to create <size> bytes of storage */ |
| /* initialized with zero. */ |
| { |
| /* |
| if(newobj&§ion!=SPECIAL) |
| emit(f,"%ld\n",zm2l(size)); |
| else |
| emit(f,"\t.space\t%ld\n",zm2l(size)); |
| newobj=0; |
| */ |
| int i; |
| int num_per_line = 16; |
| for(i=0; i<size; ++i) |
| { |
| if(i % num_per_line == 0) |
| emit(f, "\t.db\t"); |
| if(i % num_per_line == num_per_line - 1 || i == size - 1) |
| emit(f, "0\n"); |
| else |
| emit(f, "0, "); |
| } |
| } |
| |
| void gen_dc(FILE *f,int t,struct const_list *p) |
| /* This function has to create static storage */ |
| /* initialized with const-list p. */ |
| { |
| if((t&NQ)==CHAR || (t&NQ)==SHORT) |
| emit(f,"\t.db\t"); |
| else if((t&NQ)==INT || (t&NQ)==POINTER) |
| emit(f,"\t.dw\t"); |
| else |
| emit(f,";\tdc.%s %d\t",dt(t&NQ), t&NQ); |
| |
| if(!p->tree) |
| { |
| /* |
| if(ISFLOAT(t)) |
| { |
| // auch wieder nicht sehr schoen und IEEE noetig |
| unsigned char *ip; |
| ip=(unsigned char *)&p->val.vdouble; |
| emit(f,"0x%02x%02x%02x%02x",ip[0],ip[1],ip[2],ip[3]); |
| if((t&NQ)!=FLOAT) |
| { |
| emit(f,",0x%02x%02x%02x%02x",ip[4],ip[5],ip[6],ip[7]); |
| } |
| } |
| else |
| */ |
| emitval(f,&p->val,t&NU); |
| if((t&NQ)==CHAR && 0x20 <= p->val.vchar && p->val.vchar <=0x7f) |
| emit(f, "\t; '%c'", (char)p->val.vchar); |
| } |
| else |
| { |
| emit_obj(f,&p->tree->o,t&NU); |
| } |
| emit(f,"\n"); |
| //newobj=0; |
| } |
| |
| void gen_var_head(FILE *f,struct Var *v) |
| /* This function has to create the head of a variable */ |
| /* definition, i.e. the label and information for */ |
| /* linkage etc. */ |
| { |
| int constflag = 0; |
| char *sec; |
| if(v->clist) constflag=is_const(v->vtyp); |
| |
| if(v->tattr&ALIGN8) |
| { |
| emit(f, "\t.align\t8\n"); |
| /* |
| emit(f, "\t.equ\tvbcc___unaligned_address .\n"); |
| emit(f, "\t.equ\tvbcc___unaligned_address2 (vbcc___unaligned_address + 7)\n"); |
| emit(f, "\t.equ\tvbcc___unaligned_address3 (vbcc___unaligned_address2 & 7)\n"); |
| emit(f, "\t.equ\tvbcc___unaligned_address4 (vbcc___unaligned_address2 - vbcc___unaligned_address3)\n"); |
| emit(f, "\t.org\tvbcc___unaligned_address4\n"); |
| */ |
| } |
| |
| if(v->tattr&ALIGN64) |
| { |
| emit(f, "\t.align\t64\n"); |
| /* |
| emit(f, "\t.equ\tvbcc___unaligned_address .\n"); |
| emit(f, "\t.equ\tvbcc___unaligned_address2 (vbcc___unaligned_address + 63)\n"); |
| emit(f, "\t.equ\tvbcc___unaligned_address3 (vbcc___unaligned_address2 & 63)\n"); |
| emit(f, "\t.equ\tvbcc___unaligned_address4 (vbcc___unaligned_address2 - vbcc___unaligned_address3)\n"); |
| emit(f, "\t.org\tvbcc___unaligned_address4\n"); |
| */ |
| } |
| |
| if(/*(v->tattr&ROM) ||*/ /*constflag*/ is_const(v->vtyp)) |
| { |
| //emit(f, "\n\t; CONST\n"); |
| if(!last_was_rom) |
| { |
| emit(f, "\t.equ\tvbcc___saved_rom_shadow .\n"); |
| emit(f, "\t.org\tvbcc___saved_rom_shadow - %d\n", ram_rom_distance); |
| emit(f, "\t.equ\tvbcc___saved_ram_addr .\n"); |
| emit(f, "\t.org\tvbcc___saved_rom_addr\n"); |
| last_was_rom = 1; |
| } |
| } |
| else |
| { |
| //emit(f, "; in ram!!! %s%ld: %s%s: \n",labprefix,zm2l(v->offset), idprefix,v->identifier); |
| if(last_was_rom) |
| { |
| emit(f, "\t.equ\tvbcc___saved_rom_addr .\n"); |
| if(!ram_vars_initialized) |
| { |
| emit(f, "\t.org\t%d\n", start_ram_vars); |
| emit(f, "\t.equ\tvbcc___saved_ram_addr .\n"); |
| ram_vars_initialized = 1; |
| } |
| else |
| { |
| emit(f, "\t.org\tvbcc___saved_ram_addr\n"); |
| } |
| last_was_rom = 0; |
| } |
| else |
| { |
| emit(f, "\t.equ\tvbcc___saved_rom_shadow .\n"); |
| emit(f, "\t.org\tvbcc___saved_rom_shadow - %d\n", ram_rom_distance); |
| emit(f, "\t.equ\tvbcc___saved_ram_addr .\n"); |
| } |
| } |
| |
| if(v->storage_class==STATIC) |
| { |
| if(!ISFUNC(v->vtyp->flags)) |
| { |
| /* |
| if(!special_section(f,v)){ |
| if(v->clist&&(!constflag||(g_flags[2]&USEDFLAG))&§ion!=DATA){emit(f,dataname);if(f) section=DATA;} |
| if(v->clist&&constflag&&!(g_flags[2]&USEDFLAG)&§ion!=RODATA){emit(f,rodataname);if(f) section=RODATA;} |
| if(!v->clist&§ion!=BSS){emit(f,bssname);if(f) section=BSS;} |
| } |
| if(v->clist||section==SPECIAL){ |
| gen_align(f,falign(v->vtyp)); |
| emit(f,"%s%ld:\n",labprefix,zm2l(v->offset)); |
| }else |
| emit(f,"\t.lcomm\t%s%ld,",labprefix,zm2l(v->offset)); |
| newobj=1; |
| */ |
| emit(f,"%s%ld:\n",labprefix,zm2l(v->offset)); |
| } |
| } |
| if(v->storage_class==EXTERN) |
| { |
| //emit(f,"\t.globl\t%s%s\n",idprefix,v->identifier); |
| if(v->flags&(DEFINED|TENTATIVE)){ |
| /* |
| if(!special_section(f,v)){ |
| if(v->clist&&(!constflag||(g_flags[2]&USEDFLAG))&§ion!=DATA){emit(f,dataname);if(f) section=DATA;} |
| if(v->clist&&constflag&&!(g_flags[2]&USEDFLAG)&§ion!=RODATA){emit(f,rodataname);if(f) section=RODATA;} |
| if(!v->clist&§ion!=BSS){emit(f,bssname);if(f) section=BSS;} |
| } |
| if(v->clist||section==SPECIAL){ |
| gen_align(f,falign(v->vtyp)); |
| emit(f,"%s%s:\n",idprefix,v->identifier); |
| }else |
| emit(f,"\t.global\t%s%s\n\t.%scomm\t%s%s,",idprefix,v->identifier,(USE_COMMONS?"":"l"),idprefix,v->identifier); |
| newobj=1; |
| */ |
| emit(f,"%s%s:\n",idprefix,v->identifier); |
| } |
| } |
| if(!last_was_rom) |
| { |
| emit(f, "\t.org\tvbcc___saved_ram_addr + %d\n", ram_rom_distance); |
| } |
| } |
| |
| static int init_dump = 0; |
| |
| |
| /* The main code-generation routine. */ |
| /* f is the stream the code should be written to. */ |
| /* p is a pointer to a doubly linked list of ICs */ |
| /* containing the function body to generate code for. */ |
| /* v is a pointer to the function. */ |
| /* offset is the size of the stackframe the function */ |
| /* needs for local variables. */ |
| void gen_code(FILE *f,struct IC *p,struct Var *v,zmax offset) |
| { |
| int c, t, t2, i, cmp_type = 0; |
| struct IC *m; |
| |
| if(!init_dump) |
| { |
| init_dump = 1; |
| emit_start(f); |
| } |
| |
| if(strcmp(v->identifier,"main")==0) |
| { |
| emit_end(f); |
| } |
| |
| localsize=(zm2l(offset)); |
| for(m=p;m;m=m->next) |
| { |
| c=m->code;t=m->typf&NU; |
| /* convert MULT/DIV/MOD with powers of two */ |
| if((t&NQ)<=LONG&&(m->q2.flags&(KONST|DREFOBJ))==KONST&&(t&NQ)<=LONG&&(c==MULT||((c==DIV||c==MOD)&&(t&UNSIGNED)))){ |
| eval_const(&m->q2.val,t); |
| i=pof2(vmax); |
| if(i){ |
| if(c==MOD){ |
| vmax=zmsub(vmax,l2zm(1L)); |
| m->code=AND; |
| }else{ |
| vmax=l2zm(i-1); |
| if(c==DIV) m->code=RSHIFT; else m->code=LSHIFT; |
| } |
| c=m->code; |
| gval.vmax=vmax; |
| eval_const(&gval,MAXINT); |
| if(c==AND){ |
| insert_const(&m->q2.val,t); |
| }else{ |
| insert_const(&m->q2.val,INT); |
| m->typf2=INT; |
| } |
| } |
| } |
| //if(c==CALL&&argsize<zm2l(m->q2.val.vmax)) argsize=zm2l(m->q2.val.vmax); |
| } |
| //emit(f, ";%s\n", v->identifier); |
| |
| if(v->tattr&INTERRUPT) |
| { |
| char *p; |
| |
| for(p = v->identifier; *p; ++p) |
| if(isdigit(*p)) |
| break; |
| if(!*p) |
| { |
| fprintf(stderr, "ERROR: Interrupt routine with no interrupt number!\n"); |
| } |
| else |
| { |
| int num = atoi(p); |
| if(used_interrupt[num]) |
| { |
| fprintf(stderr, "ERROR: Interrupt %d defined twice!\n", num); |
| } |
| else |
| { |
| used_interrupt[num] = 1; |
| emit(f, "%s%d:\n", int_handler_prefix, num); |
| |
| emit(f, "\tpushax\n"); |
| ret="\tpopax\n\treti\n"; |
| } |
| } |
| } |
| else |
| ret="\tret\n"; |
| |
| function_top(f,v,localsize); |
| pushed=0; |
| |
| |
| for(;p;p=p->next) |
| { |
| if(debug_prints) |
| { |
| fprintf(f,";;;;"); |
| pric2(f,p); |
| } |
| |
| c=p->code; |
| t=p->typf&NU; |
| t2=p->typf2&NU; |
| |
| if(c==ALLOCREG) |
| { |
| regs[p->q1.reg]=1; |
| continue; |
| } |
| if(c==FREEREG) |
| { |
| regs[p->q1.reg]=0; |
| continue; |
| } |
| if(c==BRA){ |
| /* |
| if(t==exit_label) |
| emit(f,ret); |
| else |
| */ |
| emit(f,"\tjmp\t%s%d\n",labprefix,t); |
| continue; |
| } |
| if(c>=BEQ&&c<BRA){ |
| int tmp_label = ++label; |
| /* FIXME */ |
| /* some of the comparissions can be also 16-bit jumps */ |
| if(debug_prints) |
| emit(f, "; t: 0x%x (0x%x) so: ", cmp_type, UNSIGNED); |
| if(cmp_type&UNSIGNED) |
| { |
| if(debug_prints) |
| emit(f, "UNSIGNED\n"); |
| if(c < BLE) |
| { |
| emit(f,"\tj%s\t%s%d\n",uccs2[c-BEQ],labprefix,tmp_label); |
| emit(f,"\tjmp\t%s%d\n",labprefix,t); |
| } |
| else |
| { |
| if(c==BLE) |
| { |
| emit(f,"\tjz\t%s%d\n",labprefix,t); |
| emit(f,"\tj%s\t%s%d\n",uccs2[c-BEQ],labprefix,t); |
| } |
| else /* BGT */ |
| { |
| emit(f,"\tjz\t%s%d\n",labprefix,tmp_label); |
| emit(f,"\tj%s\t%s%d\n",uccs2[c-BEQ],labprefix,t); |
| } |
| } |
| } |
| else |
| { |
| if(debug_prints) |
| emit(f, "SIGNED\n"); |
| emit(f,"\tj%s\t%s%d\n",ccs2[c-BEQ],labprefix,tmp_label); |
| emit(f,"\tjmp\t%s%d\n",labprefix,t); |
| } |
| emit(f,"%s%d:\n",labprefix,tmp_label); |
| continue; |
| } |
| if(c==MOVETOREG){ |
| load_reg(f,p->z.reg,&p->q1,regtype[p->z.reg]->flags, 0); |
| continue; |
| } |
| if(c==MOVEFROMREG){ |
| store_reg(f,p->z.reg,&p->q1,regtype[p->z.reg]->flags); |
| continue; |
| } |
| if(c==CALL){ |
| if((p->q1.flags & (VAR|DREFOBJ)) == VAR && |
| p->q1.v->fi && |
| p->q1.v->fi->inline_asm) |
| { |
| emit_inline_asm(f,p->q1.v->fi->inline_asm); |
| } |
| else |
| { |
| emit(f,"\tcall\t"); |
| if(p->q1.v->storage_class==STATIC) |
| { |
| emit(f,"%s%ld",labprefix,zm2l(p->q1.v->offset)); |
| } |
| else |
| { |
| emit(f,"%s%s",idprefix,p->q1.v->identifier); |
| } |
| emit(f,"\n"); |
| } |
| if(pushed != 0) |
| emit(f,"\tadd\tsp,%ld\n", pushed); |
| pushed = 0; |
| continue; |
| } |
| |
| if(c==ADDRESS) |
| { |
| if(isreg(z)) |
| zreg=p->z.reg; |
| else |
| zreg=ba; |
| load_address(f,zreg,&p->q1,POINTER); |
| save_result(f,p); |
| continue; |
| } |
| |
| p=preload(f,p); |
| c=p->code; |
| |
| if(c==SUBPFP) c=SUB; |
| if(c==ADDI2P) c=ADD; |
| if(c==SUBIFP) c=SUB; |
| |
| if(c==CONVERT) |
| { |
| /* FIXME */ |
| if(ISFLOAT(q1typ(p))||ISFLOAT(ztyp(p))) ierror(0); |
| load_reg(f,zreg,&p->q1,t, t2); |
| if(sizetab[q1typ(p)&NQ]<sizetab[ztyp(p)&NQ] && (ztyp(p)&NQ&POINTER)!=POINTER) |
| { |
| if(zreg == ba && msizetab[q1typ(p)&NQ] == 1) |
| { |
| if(q1typ(p)&UNSIGNED) |
| emit(f,"\tmov\tb,0\n"); |
| else |
| emit(f,"\tex\tba,a\n",dt(q1typ(p)),regnames[zreg]); |
| } |
| else |
| NOT_IMP(); |
| } |
| save_result(f,p); |
| continue; |
| } |
| |
| if(c==SETRETURN){ |
| load_reg(f,p->z.reg,&p->q1,t, 0); |
| continue; |
| } |
| |
| if(c==GETRETURN){ |
| if(p->q1.reg){ |
| zreg=p->q1.reg; |
| save_result(f,p); |
| }else |
| p->z.flags=0; |
| continue; |
| } |
| |
| if(c==ASSIGN) |
| { |
| if(debug_prints) |
| emit(f,"; ASSIGN start\n"); |
| if(t==0) |
| ierror(0); |
| if(t==ARRAY) |
| { |
| emit_move_array(f, &p->z, &p->q1, p->q2.val.vmax); |
| } |
| else |
| { |
| load_reg(f,zreg,&p->q1,t, 0); |
| save_result(f,p); |
| } |
| if(debug_prints) |
| emit(f,"; ASSIGN end\n"); |
| continue; |
| } |
| |
| if(c==PUSH) |
| { |
| if(t==0) ierror(0); |
| pushed+=zm2l(p->q2.val.vmax); |
| //emit(f,"\tmov\t[sp+%ld],",pushed); |
| emit(f, "\tpush\t"); |
| emit_obj(f,&p->q1,t); |
| emit(f,"\n"); |
| continue; |
| } |
| |
| if(c==LABEL) |
| { |
| emit(f,"%s%d:\n",labprefix,t); |
| continue; |
| } |
| |
| if(c==KOMPLEMENT) |
| { |
| load_reg(f,ba,&p->q1,t, 0); |
| emit(f,"\tnot\ta\n"); |
| emit(f,"\tnot\tb\n"); |
| save_result(f,p); |
| continue; |
| } |
| |
| if(c==MINUS) |
| { |
| load_reg(f,ba,&p->q1,t, 0); |
| emit(f,"\tmov\thl,0\n"); |
| emit(f,"\tsub\thl,ba\n"); |
| emit(f,"\tmov\tba,hl\n"); |
| save_result(f,p); |
| continue; |
| } |
| |
| if(c==TEST) |
| { |
| if(q1reg != ba) |
| { |
| emit(f, "\tmov\tba,"); |
| emit_obj(f,&p->q1,t); |
| emit(f, "\n"); |
| } |
| emit(f,"\tcmp\t%s,0\n", (msizetab[(t&NQ)]==1)?"a":"ba"); |
| continue; |
| } |
| |
| if(c==COMPARE) |
| { |
| cmp_type = t; |
| if(q1reg != ba) |
| { |
| emit(f, "\tmov\tba,"); |
| emit_obj(f,&p->q1,t); |
| emit(f, "\n"); |
| } |
| emit(f,"\tcmp\t%s,", (msizetab[(t&NQ)]==1)?"a":"ba"); |
| emit_obj(f,&p->q2,t); |
| emit(f,"\n"); |
| continue; |
| } |
| |
| if((c>=OR&&c<=AND)||(c>=LSHIFT&&c<=MOD)) |
| { |
| load_reg(f, zreg, &p->q1, t, 0); |
| if(c>=OR&&c<=AND) |
| { |
| emit_logical(f, c, &p->q2, t); |
| } |
| else if(c>=LSHIFT&&c<=RSHIFT) |
| { |
| emit_shift(f, c, &p->q2, t); |
| } |
| else if(c==MULT) |
| { |
| load_reg(f, ba, &p->q1, t, 0); |
| load_reg(f, hl, &p->q2, t, 0); |
| emit(f, "\tcall\tvbcc___mul16x16_16\n"); |
| } |
| else if(DIV <=c && c <=MOD) |
| { |
| load_reg(f, ba, &p->q1, t, 0); |
| load_reg(f, hl, &p->q2, t, 0); |
| emit(f, "\tcall\tvbcc___div_mod16x16_16\n"); |
| if(c==MOD) |
| emit(f, "\tmov\tba, hl\n"); |
| } |
| else |
| { |
| if(zreg != ba) |
| emit(f, "\tmov\tba,%s\n", regnames[zreg]); |
| emit(f,"\t%s\t%s,",arithmetics[c-LSHIFT],regnames[ba]); |
| emit_obj(f,&p->q2,t); |
| emit(f,"\n"); |
| if(zreg != ba) |
| emit(f, "\tmov\t%s,ba\n", regnames[zreg]); |
| } |
| save_result(f,p); |
| continue; |
| } |
| |
| fprintf(f,";\tNOT IMPLEMENTED INSTRUCTION >>> %s <<< (code:%d)\n", ename[p->code], p->code); |
| fprintf(f,";;;;"); |
| pric2(f,p); |
| } |
| |
| function_bottom(f,v,localsize); |
| } |
| |
| void cleanup_cg(FILE *f) |
| { |
| } |
| |
| void init_db(FILE *f) |
| { |
| } |
| void cleanup_db(FILE *f) |
| { |
| } |