]> Shamusworld >> Repos - rmac/blobdiff - direct.c
Fixed .cargs problem, more code cleanup/fixup
[rmac] / direct.c
index 8d4f3fdc53fc5dd601a9964f938db63402045704..b1c368a4d2c8bd5b91ae3303fa60d97d3bc7c487 100644 (file)
--- a/direct.c
+++ b/direct.c
@@ -21,7 +21,8 @@
 #define DEF_KW
 #include "kwtab.h"
 
-TOKEN exprbuf[128];            // Expression buffer 
+TOKEN exprbuf[128];                    // Expression buffer 
+SYM * symbolPtr[1000000];      // Symbol pointers table
 
 // Directive handler table
 int (*dirtab[])() = {
@@ -61,7 +62,7 @@ int (*dirtab[])() = {
    d_include,                  // 33 include 
    fpop,                               // 34 end 
    d_unimpl,                   // 35* macro 
-   exitmac,                            // 36* exitm 
+   ExitMacro,                  // 36* exitm 
    d_unimpl,                   // 37* endm 
    d_list,                             // 38 list 
    d_nlist,                            // 39 nlist 
@@ -78,23 +79,9 @@ int (*dirtab[])() = {
    d_equrundef,                        // 50 .equrundef/.regundef
    d_ccundef,                  // 51 .ccundef
    d_print,                            // 52 .print
-   d_gpumain,                  // 53 .gpumain
-   d_jpad,                             // 54 .jpad
-   d_nojpad,                   // 55 .nojpad
-   d_fail,                             // 56 .fail
 };
 
 
-//
-// .fail - User abort
-//
-int d_fail(void)
-{
-       fatal("user abort");
-       return 0;
-}
-
-
 //
 // .org - Set origin
 //
@@ -120,23 +107,6 @@ int d_org(void)
 }
 
 
-//
-// NOP Padding Directive
-//
-int d_jpad(void)
-{
-       jpad = 1;
-       return 0;
-}
-
-
-int d_nojpad(void)
-{
-       jpad = 0;
-       return 0;
-}
-
-
 //
 // Print Directive
 //
@@ -158,7 +128,8 @@ int d_print(void)
                switch(*tok)
                {
                case STRING:
-                       sprintf(prntstr, "%s", (char *)tok[1]);
+//                     sprintf(prntstr, "%s", (char *)tok[1]);
+                       sprintf(prntstr, "%s", string[tok[1]]);
                        printf("%s", prntstr);
 
                        if (list_fd) 
@@ -172,7 +143,8 @@ int d_print(void)
                        if (tok[1] != SYMBOL)
                                goto token_err;
 
-                       strcpy(prntstr, (char *)tok[2]);
+//                     strcpy(prntstr, (char *)tok[2]);
+                       strcpy(prntstr, string[tok[2]]);
 
                        switch(prntstr[0])
                        {
@@ -253,7 +225,8 @@ int d_ccundef(void)
                return ERROR;
        }
 
-       ccname = lookup((char *)tok[1], LABEL, 0);
+//     ccname = lookup((char *)tok[1], LABEL, 0);
+       ccname = lookup(string[tok[1]], LABEL, 0);
 
        // Make sure symbol is a valid ccdef
        if (!ccname || !(ccname->sattre & EQUATEDCC))
@@ -296,7 +269,8 @@ int d_equrundef(void)
                }
 
                // Lookup and undef if equated register
-               regname = lookup((char *)tok[1], LABEL, 0);
+//             regname = lookup((char *)tok[1], LABEL, 0);
+               regname = lookup(string[tok[1]], LABEL, 0);
 
                if (regname && (regname->sattre & EQUATEDREG))
                        regname->sattre |= UNDEF_EQUR;
@@ -328,18 +302,31 @@ int d_incbin(void)
        long pos, size;
        char buf;
 
+       // Check to see if we're in BSS, and, if so, throw an error
+       if (scattr & SBSS)
+       {
+               errors("Cannot include binary file \"%s\" in BSS section", string[tok[1]]);
+               return ERROR;
+       }
+
        if (*tok != STRING)
        {
                error(syntax_error);
                return ERROR;
        }
 
-       if ((j = open((char *)tok[1],  _OPEN_INC)) >= 0)
+//     if ((j = open((char *)tok[1],  _OPEN_INC)) >= 0)
+       if ((j = open(string[tok[1]],  _OPEN_INC)) >= 0)
        {
                size = lseek(j, 0L, SEEK_END);
                chcheck(size);
                pos = lseek(j, 0L, SEEK_SET);
-               
+
+               DEBUG
+               {
+                       printf("INCBIN: File '%s' is %li bytes.\n", string[tok[1]], size);
+               }
+
                for(i=0; i<size; i++)
                {
                        buf = '\0';
@@ -349,7 +336,8 @@ int d_incbin(void)
        }
        else
        {
-               errors("cannot open include binary file (%s)", (char *)tok[1]);
+//             errors("cannot open include binary file (%s)", (char *)tok[1]);
+               errors("cannot open include binary file (%s)", string[tok[1]]);
                return ERROR;
        }
 
@@ -363,14 +351,16 @@ int d_incbin(void)
 //
 int d_regbank0(void)
 {
-       regbank = BANK_0;                                        // Set active register bank zero
+       // Set active register bank zero
+       regbank = BANK_0;
        return 0;
 }
 
 
 int d_regbank1(void)
 {
-       regbank = BANK_1;                                        // Set active register bank one
+       // Set active register bank one
+       regbank = BANK_1;
        return 0;
 }
 
@@ -595,7 +585,11 @@ int symlist(int(* func)())
                if (*tok != SYMBOL)
                        return error(em);
 
+#if 0
                if ((*func)(tok[1]) != OK)
+#else
+               if ((*func)(string[tok[1]]) != OK)
+#endif
                        break;
 
                tok += 2;
@@ -624,15 +618,23 @@ int d_include(void)
        char buf[128];
        char buf1[128];
 
-       if (*tok == STRING)                                       // Leave strings ALONE 
+       if (*tok == STRING)                                                     // Leave strings ALONE 
+#if 0
                fn = (char *)*++tok;
+#else
+               fn = string[*++tok];
+#endif
        else if (*tok == SYMBOL)                                        // Try to append ".s" to symbols
        {
+#if 0
                strcpy(buf, (char *)*++tok);
+#else
+               strcpy(buf, string[*++tok]);
+#endif
                fext(buf, ".s", 0);
                fn = &buf[0];
        }
-       else                                                   // Punt if no STRING or SYMBOL 
+       else                                                                            // Punt if no STRING or SYMBOL 
                return error("missing filename");
 
        // Make sure the user didn't try anything like:
@@ -640,15 +642,16 @@ int d_include(void)
        if (*++tok != EOL)
                return error("extra stuff after filename -- enclose it in quotes");
 
-       // Attempt to open the include file in the current directory, then (if that failed) try list
-       // of include files passed in the enviroment string or by the "-d" option.
+       // Attempt to open the include file in the current directory, then (if that
+       // failed) try list of include files passed in the enviroment string or by
+       // the "-d" option.
        if ((j = open(fn, 0)) < 0)
        {
-               for(i=0; nthpath("RMACPATH", i, buf1)!=0; ++i)
+               for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
                {
                        j = strlen(buf1);
 
-                       if (j > 0 && buf1[j-1] != SLASHCHAR)                // Append path char if necessary 
+                       if (j > 0 && buf1[j - 1] != SLASHCHAR)  // Append path char if necessary 
                                strcat(buf1, SLASHSTRING);
 
                        strcat(buf1, fn);
@@ -703,7 +706,7 @@ int globl1(char * p)
 
        if ((sy = lookup(p, LABEL, 0)) == NULL)
        {
-               sy = newsym(p, LABEL, 0);
+               sy = NewSymbol(p, LABEL, 0);
                sy->svalue = 0;
                sy->sattr = GLOBAL;
        }
@@ -854,12 +857,13 @@ int d_dc(WORD siz)
                // dc.b 'string' [,] ...
                if (siz == SIZB && *tok == STRING && (tok[2] == ',' || tok[2] == EOL))
                {
-                       i = strlen((const char*)tok[1]);
+//                     i = strlen((const char*)tok[1]);
+                       i = strlen(string[tok[1]]);
 
                        if ((challoc - ch_size) < i) 
                                chcheck(i);
 
-                       for(p=(char *)tok[1]; *p!=EOS; ++p)
+                       for(p=string[tok[1]]; *p!=EOS; ++p)
                                D_byte(*p);
 
                        tok += 2;
@@ -888,7 +892,7 @@ int d_dc(WORD siz)
                case SIZB:
                        if (!defined)
                        {
-                               fixup(FU_BYTE|FU_SEXT, sloc, exprbuf);
+                               fixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
                                D_byte(0);
                        }
                        else
@@ -907,7 +911,7 @@ int d_dc(WORD siz)
                case SIZN:
                        if (!defined)
                        {
-                               fixup(FU_WORD|FU_SEXT, sloc, exprbuf);
+                               fixup(FU_WORD | FU_SEXT, sloc, exprbuf);
                                D_word(0);
                        }
                        else
@@ -927,7 +931,7 @@ int d_dc(WORD siz)
                        if (!defined)
                        {
                                if (movei)
-                                       fixup(FU_LONG|FU_MOVEI, sloc, exprbuf);
+                                       fixup(FU_LONG | FU_MOVEI, sloc, exprbuf);
                                else
                                        fixup(FU_LONG, sloc, exprbuf);
 
@@ -1075,7 +1079,7 @@ int dep_block(VALUE count, WORD siz, VALUE eval, WORD eattr, TOKEN * exprbuf)
                case SIZB:
                        if (!defined)
                        {
-                               fixup(FU_BYTE|FU_SEXT, sloc, exprbuf);
+                               fixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
                                D_byte(0);
                        }
                        else
@@ -1094,7 +1098,7 @@ int dep_block(VALUE count, WORD siz, VALUE eval, WORD eattr, TOKEN * exprbuf)
                case SIZN:
                        if (!defined)
                        {
-                               fixup(FU_WORD|FU_SEXT, sloc, exprbuf);
+                               fixup(FU_WORD | FU_SEXT, sloc, exprbuf);
                                D_word(0);
                        }
                        else
@@ -1144,29 +1148,30 @@ int d_comm(void)
        if (*tok != SYMBOL)
                return error("missing symbol");
 
-       p = (char *)tok[1];
+//     p = (char *)tok[1];
+       p = string[tok[1]];
        tok += 2;
 
-       if (*p == '.')                                            // Cannot .comm a local symbol
+       if (*p == '.')                                                  // Cannot .comm a local symbol
                return error(locgl_error);
 
        if ((sym = lookup(p, LABEL, 0)) == NULL)
-               sym = newsym(p, LABEL, 0);
+               sym = NewSymbol(p, LABEL, 0);
        else
        {
                if (sym->sattr & DEFINED)
                        return error(".comm symbol already defined");
        }
 
-       sym->sattr = GLOBAL|COMMON|BSS;
+       sym->sattr = GLOBAL | COMMON | BSS;
 
        if (*tok++ != ',')
                return error(comma_error);
 
-       if (abs_expr(&eval) != OK)                                // Parse size of common region
+       if (abs_expr(&eval) != OK)                              // Parse size of common region
                return 0;
 
-       sym->svalue = eval;                                      // Install common symbol's size
+       sym->svalue = eval;                                             // Install common symbol's size
        at_eol();
        return 0;
 }
@@ -1178,7 +1183,7 @@ int d_comm(void)
 int d_list(void)
 {
        if (list_flag)
-               ++listing;
+               listing++;
 
        return 0;
 }
@@ -1190,7 +1195,7 @@ int d_list(void)
 int d_nlist(void)
 {
        if (list_flag)
-               --listing;
+               listing--;
 
        return 0;
 }
@@ -1202,7 +1207,6 @@ int d_nlist(void)
 int d_68000(void)
 {
        rgpu = rdsp = 0;
-       in_main = 0;
        // Switching from gpu/dsp sections should reset any ORG'd Address
        orgactive = 0;                               
        orgwarning = 0;
@@ -1230,39 +1234,9 @@ int d_gpu(void)
                orgwarning = 0;
        }
 
-       rgpu = 1;                                                // Set GPU assembly
-       rdsp = 0;                                                // Unset DSP assembly
-       regbank = BANK_N;                                        // Set no default register bank
-       in_main = 0;
-       jpad = 0;
-       return 0;
-}
-
-
-//
-// GPU Main Code Directive
-//
-
-int d_gpumain(void)
-{
-       if ((cursect != TEXT) && (cursect != DATA))
-       {
-               error(".gpumain can only be used in the TEXT or DATA segments");
-               return ERROR;
-       }
-
-       // If previous section was dsp or 68000 then we need to reset ORG'd Addresses
-       if (!rgpu)
-       {
-               orgactive = 0;
-               orgwarning = 0;
-       }
-
-       rgpu = 1;                                                // Set GPU assembly
-       rdsp = 0;                                                // Unset DSP assembly
-       regbank = BANK_N;                                        // Set no default register bank
-       in_main = 1;                                             // Enable main code execution rules
-       jpad = 0;
+       rgpu = 1;                       // Set GPU assembly
+       rdsp = 0;                       // Unset DSP assembly
+       regbank = BANK_N;       // Set no default register bank
        return 0;
 }
 
@@ -1285,11 +1259,9 @@ int d_dsp(void)
                orgwarning = 0;
        }
 
-       rdsp = 1;                                                // Set DSP assembly
-       rgpu = 0;                                                // Unset GPU assembly
-       regbank = BANK_N;                                        // Set no default register bank
-       in_main = 0;
-       jpad = 0;
+       rdsp = 1;                       // Set DSP assembly
+       rgpu = 0;                       // Unset GPU assembly
+       regbank = BANK_N;       // Set no default register bank
        return 0;
 }
 
@@ -1298,17 +1270,17 @@ int d_dsp(void)
 // .cargs [#offset], symbol[.size], ...
 // 
 // Lists of registers may also be mentioned; they just take up space. Good for
-// "documentation" purposes.
+// "documentation" purposes:
 // 
-// .cargs a6,.arg1, .arg2, .arg3...
+// .cargs a6, .arg1, .arg2, .arg3...
 // 
-// The symbols are ABS and EQUATED.
+// Symbols thus created are ABS and EQUATED.
 //
 int d_cargs(void)
 {
        VALUE eval;
        WORD rlist;
-       SYM * sy;
+       SYM * symbol;
        char * p;
        int env;
        int i;
@@ -1318,92 +1290,103 @@ int d_cargs(void)
 
        if (*tok == '#')
        {
-               ++tok;
+               tok++;
 
                if (abs_expr(&eval) != OK)
                        return 0;
 
-               if (*tok == ',')                                       // Eat comma if it's there
-                       ++tok;
+               // Eat the comma, if it's there
+               if (*tok == ',')
+                       tok++;
        }
        else 
+               // Default to 4 if not specified (because PC is on stack according to GroovyBee)
                eval = 4;
 
        for(;;)
        {
                if (*tok == SYMBOL)
                {
-                       p = (char *)tok[1];
+//                     p = (char *)tok[1];
+                       p = string[tok[1]];
 
+#if 0
                        if (*p == '.')
-                               env = curenv;
+                               env = curenv;                   // Label is local
                        else
-                               env = 0;
-
-                       sy = lookup(p, LABEL, env);
-
-                       if (sy == NULL)
+                               env = 0;                                // Label is global
+#else
+                       // Set env to either local (dot prefixed) or global scope
+                       env = (*p == '.' ? curenv : 0);
+#endif
+                       symbol = lookup(p, LABEL, env);
+
+                       if (symbol == NULL)
                        {
-                               sy = newsym(p, LABEL, env);
-                               sy->sattr = 0;
+                               symbol = NewSymbol(p, LABEL, env);
+                               symbol->sattr = 0;
                        }
-                       else if (sy->sattr & DEFINED)
+                       else if (symbol->sattr & DEFINED)
                                return errors("multiply-defined label '%s'", p);
 
                        // Put symbol in "order of definition" list
-                       if (!(sy->sattr & SDECLLIST))
-                               sym_decl(sy);
+                       if (!(symbol->sattr & SDECLLIST))
+                               sym_decl(symbol);
 
-                       sy->sattr |= ABS|DEFINED|EQUATED;
-                       sy->svalue = eval;
+                       symbol->sattr |= (ABS | DEFINED | EQUATED);
+                       symbol->svalue = eval;
                        tok += 2;
 
-                       switch((int)*tok)
+                       // What this does is eat any dot suffixes attached to a symbol. If
+                       // it's a .L, it adds 4 to eval; if it's .W or .B, it adds 2. If
+                       // there is no dot suffix, it assumes a size of 2.
+                       switch ((int)*tok)
                        {
                        case DOTL:
                                eval += 2;
                        case DOTB:
                        case DOTW:
-                               ++tok;
+                               tok++;
                        }
 
                        eval += 2;
                }
-               else 
+               else if (*tok >= KW_D0 && *tok <= KW_A7)
                {
-                       if (*tok >= KW_D0 && *tok <= KW_A7)
-                       {
-                               if (reglist(&rlist) < 0)
-                                       return 0;
+                       if (reglist(&rlist) < 0)
+                               return 0;
 
-                               for(i=0; i++<16; rlist>>=1)
-                                       if (rlist & 1)
-                                               eval += 4;
+//                     for(i=0; i++<16; rlist>>=1)
+                       for(i=0; i<16; i++, rlist>>=1)
+                       {
+                               if (rlist & 1)
+                                       eval += 4;
                        }
-                       else
+               }
+               else
+               {
+                       switch ((int)*tok)
                        {
-                               switch((int)*tok)
-                               {
-                               case KW_USP:
-                               case KW_SSP:
-                               case KW_PC:
-                                       eval += 2;
-                                       // FALLTHROUGH
-                               case KW_SR:
-                               case KW_CCR:
-                                       eval += 2;
-                                       ++tok;
-                                       break;
-                               case EOL:
-                                       return 0;
-                               default:
-                                       return error(".cargs syntax");
-                               }
+                       case KW_USP:
+                       case KW_SSP:
+                       case KW_PC:
+                               eval += 2;
+                               // FALLTHROUGH
+                       case KW_SR:
+                       case KW_CCR:
+                               eval += 2;
+                               tok++;
+                               break;
+                       case EOL:
+                               return 0;
+                       default:
+                               return error(".cargs syntax");
                        }
-
-                       if (*tok == ',')
-                               ++tok;
                }
+
+               // Eat commas in between each argument, if they exist
+               if (*tok == ',')
+                       tok++;
        }
 }
 
@@ -1413,11 +1396,12 @@ int d_cargs(void)
 //
 int undmac1(char * p)
 {
-       SYM * sy;
+       SYM * symbol = lookup(p, MACRO, 0);
 
-       // If the macro symbol exists, cause it to dissappear
-       if ((sy = lookup(p, MACRO, 0)) != NULL)
-               sy->stype = (BYTE)SY_UNDEF;
+       // If the macro symbol exists, cause it to disappear
+//     if ((sy = lookup(p, MACRO, 0)) != NULL)
+       if (symbol != NULL)
+               symbol->stype = (BYTE)SY_UNDEF;
 
        return OK;
 }
@@ -1428,3 +1412,4 @@ int d_undmac(void)
        symlist(undmac1);
        return 0;
 }
+