X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rmac;a=blobdiff_plain;f=procln.c;h=b56b25461d9012c845e6720a107851b6f38d5a19;hp=743c9b96e13b61da115d038dc8f529578849eee7;hb=062214e62031c26d372edc2e68473ebb64f6a506;hpb=b10167d55798ea184f97fafda075255c0852f3b6 diff --git a/procln.c b/procln.c index 743c9b9..b56b254 100644 --- a/procln.c +++ b/procln.c @@ -89,6 +89,10 @@ LONG amsktab[0112] = { }; // 0112 length +// Function prototypes +int HandleLabel(char *, int); + + // // Initialize Line Processor // @@ -123,7 +127,6 @@ void Assemble(void) SYM * sy, * sy2; // Symbol (temp usage) char * opname = NULL; // Name of dirctve/mnemonic/macro int listflag; // 0: Don't call listeol() - int as68mode = 0; // 1: Handle multiple labels WORD rmask; // Register list, for REG int registerbank; // RISC register bank int riscreg; // RISC register @@ -168,10 +171,10 @@ loop1: // Internal line processing loop if (*tok == EOL) // Restart loop if end-of-line goto loop; - // First token MUST be a symbol + // First token MUST be a symbol (Shamus: not sure why :-/) if (*tok != SYMBOL) { - error(syntax_error); + error("syntax error; expected symbol"); goto loop; } @@ -189,43 +192,34 @@ loop1: // Internal line processing loop if (j == ':' || j == DCOLON) { as68label: -// label = (char *)tok[1]; // Get label name label = string[tok[1]]; // Get label name labtyp = tok[2]; // Get label type tok += 3; // Go to next line token - // Handle multiple labels; if there's another label, go process it, - // and come back at `as68label' above. - if (as68_flag) + // AS68 MODE: + // Looks like another label follows the previous one, so handle + // the previous one until there aren't any more + if (as68_flag && (*tok == SYMBOL && tok[2] == ':')) { - as68mode = 0; + if (HandleLabel(label, labtyp) != 0) + goto loop; - if (*tok == SYMBOL && tok[2] == ':') - { - as68mode = 1; - goto do_label; - } + goto as68label; } } - if (*tok == EOL) // EOL is legal here... + // EOL is legal here... + if (*tok == EOL) goto normal; // Next token MUST be a symbol if (*tok++ != SYMBOL) { - error(syntax_error); + error("syntax error; expected symbol"); goto loop; } -// This is the problem here: On 64-bit platforms, this cuts the native pointer -// in half. We need to figure out how to fix this. -//#warning "!!! Bad pointer !!!" -#if 0 - opname = p = (char *)*tok++; // Store opcode name here -#else opname = p = string[*tok++]; -#endif // Check to see if the SYMBOL is a keyword (a mnemonic or directive). // On output, `state' will have one of the values: @@ -259,11 +253,11 @@ as68label: siz = SIZN; if (*tok == DOTW) - siz = SIZW, ++tok; + siz = SIZW, tok++; else if (*tok == DOTL) - siz = SIZL, ++tok; + siz = SIZL, tok++; else if (*tok == DOTB) - siz = SIZB, ++tok; + siz = SIZB, tok++; // Do special directives (500..999) (These must be handled in "real time") if (state >= 500 && state < 1000) @@ -302,6 +296,7 @@ as68label: case MN_MACRO: // .macro --- macro definition if (!disabled) { + // Label on a macro definition is bad mojo... Warn the user if (label != NULL) warn(lab_ignored); @@ -323,8 +318,12 @@ as68label: case MN_REPT: if (!disabled) { - if (label != NULL) - warn(lab_ignored); + // Handle labels on REPT directive lines... + if (label) + { + if (HandleLabel(label, labtyp) != 0) + goto loop; + } defrept(); } @@ -346,14 +345,7 @@ normal: if (equate != NULL) { // Pick global or local symbol enviroment -#if 0 - j = 0; - - if (*equate == '.') - j = curenv; -#else j = (*equate == '.' ? curenv : 0); -#endif sy = lookup(equate, LABEL, j); if (sy == NULL) @@ -396,7 +388,7 @@ normal: // Put symbol in "order of definition" list if (!(sy->sattr & SDECLLIST)) - sym_decl(sy); + AddToSymbolOrderList(sy); // Parse value to equate symbol to; // o .equr @@ -422,7 +414,8 @@ checking to see if it's already been equated, issue a warning. // Check for register to equate to if ((*tok >= KW_R0) && (*tok <= KW_R31)) { - sy->sattre = EQUATEDREG | RISCSYM; // Mark as equated register +// sy->sattre = EQUATEDREG | RISCSYM; // Mark as equated register + sy->sattre = EQUATEDREG; // Mark as equated register riscreg = (*tok - KW_R0); //is there any reason to do this, since we're putting this in svalue? //i'm thinking, no. Let's test that out! :-D @@ -566,58 +559,9 @@ checking to see if it's already been equated, issue a warning. // Do labels if (label != NULL) { -do_label: - // Check for dot in front of label; means this is a local label if present - j = (*label == '.' ? curenv : 0); - sy = lookup(label, LABEL, j); - - if (sy == NULL) - { - sy = NewSymbol(label, LABEL, j); - sy->sattr = 0; - sy->sattre = RISCSYM; - } - else if (sy->sattr & DEFINED) - { - errors("multiply-defined label '%s'", label); + // Non-zero == error occurred + if (HandleLabel(label, labtyp) != 0) goto loop; - } - - // Put symbol in "order of definition" list - if (!(sy->sattr & SDECLLIST)) - sym_decl(sy); - - if (orgactive) - { - sy->svalue = orgaddr; - sy->sattr |= ABS | DEFINED | EQUATED; - } - else - { - sy->svalue = sloc; - sy->sattr |= DEFINED | cursect; - } - - lab_sym = sy; - - if (!j) - curenv++; - - // Make label global - if (labtyp == DCOLON) - { - if (j) - { - error(locgl_error); - goto loop; - } - - sy->sattr |= GLOBAL; - } - - // If we're in as68 mode, and there's another label, go back and handle it - if (as68_flag && as68mode) - goto as68label; } // Punt on EOL @@ -731,6 +675,58 @@ do_label: } +// +// Handle the creation of labels +// +int HandleLabel(char * label, int labelType) +{ + // Check for dot in front of label; means this is a local label if present + int environment = (*label == '.' ? curenv : 0); + SYM * symbol = lookup(label, LABEL, environment); + + if (symbol == NULL) + { + symbol = NewSymbol(label, LABEL, environment); + symbol->sattr = 0; +// symbol->sattre = RISCSYM; + symbol->sattre = 0; + } + else if (symbol->sattr & DEFINED) + return errors("multiply-defined label '%s'", label); + + // Put symbol in "order of definition" list + if (!(symbol->sattr & SDECLLIST)) + AddToSymbolOrderList(symbol); + + if (orgactive) + { + symbol->svalue = orgaddr; + symbol->sattr |= ABS | DEFINED | EQUATED; + } + else + { + symbol->svalue = sloc; + symbol->sattr |= DEFINED | cursect; + } + + lab_sym = symbol; + + if (0 == environment) + curenv++; + + // Make label global if it has a double colon + if (labelType == DCOLON) + { + if (environment != 0) + return error(locgl_error); + + symbol->sattr |= GLOBAL; + } + + return 0; +} + + // // .if, Start Conditional Assembly // @@ -804,3 +800,4 @@ int d_endif (void) f_ifent = rif; return 0; } +