Roll back TOKENPTR changes and most of the .u32 changes weren't needed.
[rmac] / direct.c
index 5714def294d89aa5dc21f9e3adb1c9d8ce7be97e..155fa3fb360821bc945bb0e8e3a79ffd6fe973a9 100644 (file)
--- a/direct.c
+++ b/direct.c
 #include "sect.h"
 #include "symbol.h"
 #include "token.h"
+#include "math.h"
+#include "sect.h"
 
 #define DEF_KW
 #include "kwtab.h"
 
+
 TOKEN exprbuf[128];                    // Expression buffer
 SYM * symbolPtr[1000000];      // Symbol pointers table
 static long unused;                    // For supressing 'write' warnings
 char buffer[256];                      // Scratch buffer for messages
+int largestAlign[3] = { 2, 2, 2 };     // Largest alignment value seen per section
 
 // Function prototypes
 int d_unimpl(void);
@@ -77,6 +81,7 @@ int d_cstruct(void);
 int d_prgflags(void);
 int d_opt(void);
 int d_dsp(void);
+void SetLargestAlignment(int);
 
 // Directive handler table
 int (*dirtab[])() = {
@@ -150,6 +155,20 @@ int (*dirtab[])() = {
 };
 
 
+//
+// Set the largest alignment seen in the current section
+//
+void SetLargestAlignment(int size)
+{
+       if ((scattr & TEXT) && (largestAlign[0] < size))
+               largestAlign[0] = size;
+       else if ((scattr & DATA) && (largestAlign[1] < size))
+               largestAlign[1] = size;
+       else if ((scattr & BSS) && (largestAlign[2] < size))
+               largestAlign[2] = size;
+}
+
+
 //
 // .error - Abort compilation, printing an error message
 //
@@ -197,7 +216,7 @@ int d_warn(char *str)
 //
 int d_org(void)
 {
-       VALUE address;
+       uint64_t address;
 
        if (!rgpu && !rdsp && !m6502)
                return error(".org permitted only in gpu/dsp and 6502 sections");
@@ -250,7 +269,7 @@ int d_print(void)
        int wordlong = 0;                       // WORD = 0, LONG = 1
        int outtype = 0;                        // 0:hex, 1:decimal, 2:unsigned
 
-       VALUE eval;                                     // Expression value
+       uint64_t eval;                          // Expression value
        WORD eattr;                                     // Expression attributes
        SYM * esym;                                     // External symbol involved in expr.
        TOKEN r_expr[EXPRSIZE];
@@ -577,6 +596,7 @@ int d_long(void)
        unsigned lower2Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x03;
        unsigned bytesToSkip = (0x04 - lower2Bits) & 0x03;
        SkipBytes(bytesToSkip);
+       SetLargestAlignment(4);
 
        return 0;
 }
@@ -599,6 +619,7 @@ int d_phrase(void)
        unsigned lower3Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x07;
        unsigned bytesToSkip = (0x08 - lower3Bits) & 0x07;
        SkipBytes(bytesToSkip);
+       SetLargestAlignment(8);
 
        return 0;
 }
@@ -612,6 +633,7 @@ int d_dphrase(void)
        unsigned lower4Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x0F;
        unsigned bytesToSkip = (0x10 - lower4Bits) & 0x0F;
        SkipBytes(bytesToSkip);
+       SetLargestAlignment(16);
 
        return 0;
 }
@@ -625,6 +647,7 @@ int d_qphrase(void)
        unsigned lower5Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x1F;
        unsigned bytesToSkip = (0x20 - lower5Bits) & 0x1F;
        SkipBytes(bytesToSkip);
+       SetLargestAlignment(32);
 
        return 0;
 }
@@ -667,7 +690,7 @@ int d_unimpl(void)
 //
 // Return absolute (not TDB) and defined expression or return an error
 //
-int abs_expr(VALUE * a_eval)
+int abs_expr(uint64_t * a_eval)
 {
        WORD eattr;
 
@@ -775,7 +798,7 @@ allright:
 int d_assert(void)
 {
        WORD eattr;
-       VALUE eval;
+       uint64_t eval;
 
        for(; expr(exprbuf, &eval, &eattr, NULL)==OK; ++tok)
        {
@@ -833,13 +856,13 @@ int d_globl(void)
 //
 int d_prgflags(void)
 {
-       VALUE eval;
+       uint64_t eval;
 
        if (*tok == EOL)
                return error("PRGFLAGS requires value");
        else if (abs_expr(&eval) == OK)
        {
-               PRGFLAGS=eval;
+               PRGFLAGS = (uint32_t)eval;
                return 0;
        }
        else
@@ -854,7 +877,7 @@ int d_prgflags(void)
 //
 int d_abs(void)
 {
-       VALUE eval;
+       uint64_t eval;
 
        if (m6502)
                return error(in_6502mode);
@@ -867,7 +890,7 @@ int d_abs(void)
                return 0;
 
        SwitchSection(ABS);
-       sloc = eval;
+       sloc = (uint32_t)eval;
        return 0;
 }
 
@@ -933,7 +956,7 @@ int d_ds(WORD siz)
 {
        DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
 
-       VALUE eval;
+       uint64_t eval;
 
        if (cursect != M6502)
        {
@@ -946,7 +969,7 @@ int d_ds(WORD siz)
 
        // Check to see if the value being passed in is negative (who the hell does
        // that?--nobody does; it's the code gremlins, or rum, that does it)
-       // N.B.: Since VALUE is of type uint32_t, if it goes negative, it will have
+       // N.B.: Since 'eval' is of type uint32_t, if it goes negative, it will have
        //       its high bit set.
        if (eval & 0x80000000)
                return error("negative sizes not allowed");
@@ -956,9 +979,9 @@ int d_ds(WORD siz)
        // of zeroed memory....
        if ((scattr & SBSS) || cursect == M6502)
        {
-               listvalue(eval);
+               listvalue((uint32_t)eval);
                eval *= siz;
-               sloc += eval;
+               sloc += (uint32_t)eval;
 
                if (cursect == M6502)
                        chptr += eval;
@@ -967,7 +990,7 @@ int d_ds(WORD siz)
        }
        else
        {
-               dep_block(eval, siz, (VALUE)0, (WORD)(DEFINED | ABS), NULL);
+               dep_block(eval, siz, 0, (WORD)(DEFINED | ABS), NULL);
        }
 
        at_eol();
@@ -976,12 +999,12 @@ int d_ds(WORD siz)
 
 
 //
-// dc.b, dc.w / dc, dc.l, dc.i
+// dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d
 //
 int d_dc(WORD siz)
 {
        WORD eattr;
-       VALUE eval;
+       uint64_t eval;
        uint8_t * p;
 
        if ((scattr & SBSS) != 0)
@@ -1092,6 +1115,7 @@ int d_dc(WORD siz)
 
                        break;
                case SIZL:
+                       // Shamus: Why can't we do longs in 6502 mode?
                        if (m6502)
                                return error(in_6502mode);
 
@@ -1114,6 +1138,77 @@ int d_dc(WORD siz)
 
                                D_long(eval);
                        }
+                       break;
+               case SIZQ:
+                       // 64-bit size
+                       if (m6502)
+                               return error(in_6502mode);
+
+                       // Shamus: We only handle DC.Q type stuff, will have to add fixups
+                       //         and stuff later (maybe... might not be needed...)
+                       D_quad(eval);
+                       break;
+               case SIZS:
+                       if (m6502)
+                               return error(in_6502mode);
+
+                       if (!defined)
+                       {
+                               float vv = 0;
+                               AddFixup(FU_FLOATSING, sloc, exprbuf);
+
+                               D_single(vv);
+                       }
+                       else
+                       {
+                               if (tdb)
+                                       MarkRelocatable(cursect, sloc, tdb, MSINGLE, NULL);
+
+                               D_single(eval);
+                       }
+
+                       break;
+               case SIZD:
+                       if (m6502)
+                               return error(in_6502mode);
+
+                       if (!defined)
+                       {
+                               double vv = 0;
+                               AddFixup(FU_FLOATDOUB, sloc, exprbuf);
+
+                               D_double(vv);
+                       }
+                       else
+                       {
+                               if (tdb)
+                                       MarkRelocatable(cursect, sloc, tdb, MDOUBLE, NULL);
+
+                               double vv = *(double *)&eval;
+                               D_double(vv);
+                       }
+
+                       break;
+               case SIZX:
+                       if (m6502)
+                               return error(in_6502mode);
+
+                       if (!defined)
+                       {
+                               double vv = 0;
+                               AddFixup(FU_FLOATEXT, sloc, exprbuf);
+
+                               D_extend(vv);
+                       }
+                       else
+                       {
+                               if (tdb)
+                                       MarkRelocatable(cursect, sloc, tdb, MEXTEND, NULL);
+
+                               float vv = *(double *)&eval;
+                               D_extend(vv);
+                       }
+
                        break;
                }
 
@@ -1132,7 +1227,7 @@ comma:
 //
 int d_dcb(WORD siz)
 {
-       VALUE evalc, eval;
+       uint64_t evalc, eval;
        WORD eattr;
 
        DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
@@ -1152,7 +1247,7 @@ int d_dcb(WORD siz)
        if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
                auto_even();
 
-       dep_block(evalc, siz, eval, eattr, exprbuf);
+       dep_block((uint32_t)evalc, siz, (uint32_t)eval, eattr, exprbuf);
        return 0;
 }
 
@@ -1169,8 +1264,8 @@ int d_dcb(WORD siz)
 //
 int d_init(WORD def_siz)
 {
-       VALUE count;
-       VALUE eval;
+       uint64_t count;
+       uint64_t eval;
        WORD eattr;
        WORD siz;
 
@@ -1185,7 +1280,7 @@ int d_init(WORD def_siz)
                // Get repeat count (defaults to 1)
                if (*tok == '#')
                {
-                       ++tok;
+                       tok++;
 
                        if (abs_expr(&count) != OK)
                                return 0;
@@ -1200,7 +1295,7 @@ int d_init(WORD def_siz)
                if (expr(exprbuf, &eval, &eattr, NULL) < 0)
                        return 0;
 
-               switch ((int)*tok++)
+               switch (*tok++)
                {                                 // Determine size of object to deposit
                case DOTB: siz = SIZB; break;
                case DOTW: siz = SIZB; break;
@@ -1211,9 +1306,9 @@ int d_init(WORD def_siz)
                        break;
                }
 
-               dep_block(count, siz, eval, eattr, exprbuf);
+               dep_block((uint32_t)count, siz, (uint32_t)eval, eattr, exprbuf);
 
-               switch ((int)*tok)
+               switch (*tok)
                {
                case EOL:
                        return 0;
@@ -1230,7 +1325,7 @@ int d_init(WORD def_siz)
 //
 // Deposit 'count' values of size 'siz' in the current (non-BSS) segment
 //
-int dep_block(VALUE count, WORD siz, VALUE eval, WORD eattr, TOKEN * exprbuf)
+int dep_block(uint32_t count, WORD siz, uint32_t eval, WORD eattr, TOKEN * exprbuf)
 {
        WORD tdb;
        WORD defined;
@@ -1319,7 +1414,7 @@ int d_comm(void)
 {
        SYM * sym;
        char * p;
-       VALUE eval;
+       uint64_t eval;
 
        if (m6502)
                return error(in_6502mode);
@@ -1349,7 +1444,7 @@ int d_comm(void)
        if (abs_expr(&eval) != OK)                              // Parse size of common region
                return 0;
 
-       sym->svalue = eval;                                             // Install common symbol's size
+       sym->svalue = (uint32_t)eval;                   // Install common symbol's size
        at_eol();
        return 0;
 }
@@ -1493,14 +1588,12 @@ int d_gpu(void)
                return ERROR;
        }
 
-       // If previous section was dsp or 68000 then we need to reset ORG'd Addresses
+       // If previous section was DSP or 68000 then we need to reset ORG'd Addresses
        if (!rgpu)
        {
-//printf("Resetting ORG...\n");
                orgactive = 0;
                orgwarning = 0;
        }
-//else printf("NOT resetting ORG!\n");
 
        rgpu = 1;                       // Set GPU assembly
        rdsp = 0;                       // Unset DSP assembly
@@ -1546,7 +1639,7 @@ int d_dsp(void)
 //
 int d_cargs(void)
 {
-       VALUE eval = 4;         // Default to 4 if no offset specified (to account for
+       uint64_t eval = 4;      // Default to 4 if no offset specified (to account for
                                                // return address)
        WORD rlist;
        SYM * symbol;
@@ -1591,7 +1684,7 @@ int d_cargs(void)
                        AddToSymbolDeclarationList(symbol);
 
                        symbol->sattr |= (ABS | DEFINED | EQUATED);
-                       symbol->svalue = eval;
+                       symbol->svalue = (uint32_t)eval;
                        tok += 2;
 
                        // What this does is eat any dot suffixes attached to a symbol. If
@@ -1661,7 +1754,7 @@ int d_cargs(void)
 //
 int d_cstruct(void)
 {
-       VALUE eval = 0;         // Default, if no offset specified, is zero
+       uint64_t eval = 0;      // Default, if no offset specified, is zero
        WORD rlist;
        SYM * symbol;
        char * symbolName;
@@ -1718,7 +1811,7 @@ int d_cstruct(void)
                        }
 
                        symbol->sattr |= (ABS | DEFINED | EQUATED);
-                       symbol->svalue = eval;
+                       symbol->svalue = (uint32_t)eval;
 
                        // Check for dot suffixes and adjust space accordingly (longs and
                        // words on an odd boundary get bumped to the next word aligned
@@ -1843,3 +1936,78 @@ int d_opt(void)
        return OK;
 }
 
+
+//
+// .if, Start conditional assembly
+//
+int d_if(void)
+{
+       WORD eattr;
+       uint64_t eval;
+       SYM * esym;
+       IFENT * rif = f_ifent;
+
+       // Alloc an IFENTRY
+       if (rif == NULL)
+               rif = (IFENT *)malloc(sizeof(IFENT));
+       else
+               f_ifent = rif->if_prev;
+
+       rif->if_prev = ifent;
+       ifent = rif;
+
+       if (!disabled)
+       {
+               if (expr(exprbuf, &eval, &eattr, &esym) != OK)
+                       return 0;
+
+               if ((eattr & DEFINED) == 0)
+                       return error(undef_error);
+
+               disabled = !eval;
+       }
+
+       rif->if_state = (WORD)disabled;
+       return 0;
+}
+
+
+//
+// .else, Do alternate case for .if
+//
+int d_else(void)
+{
+       IFENT * rif = ifent;
+
+       if (rif->if_prev == NULL)
+               return error("mismatched .else");
+
+       if (disabled)
+               disabled = rif->if_prev->if_state;
+       else
+               disabled = 1;
+
+       rif->if_state = (WORD)disabled;
+       return 0;
+}
+
+
+//
+// .endif, End of conditional assembly block
+// This is also called by fpop() to pop levels of IFENTs in case a macro or
+// include file exits early with `exitm' or `end'.
+//
+int d_endif(void)
+{
+       IFENT * rif = ifent;
+
+       if (rif->if_prev == NULL)
+               return error("mismatched .endif");
+
+       ifent = rif->if_prev;
+       disabled = rif->if_prev->if_state;
+       rif->if_prev = f_ifent;
+       f_ifent = rif;
+       return 0;
+}
+