EOY minor update.
[rmac] / procln.c
index 3b8c607db3c8c5ed40ffc6778da64bda7e36aa86..9c207bfdefe8481ca71195ad1ad7c3aaaf7c3471 100644 (file)
--- a/procln.c
+++ b/procln.c
@@ -1,24 +1,28 @@
 //
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// RMAC - Reboot's Macro Assembler for all Atari computers
 // PROCLN.C - Line Processing
-// Copyright (C) 199x Landon Dyer, 2011 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2020 Reboot and Friends
 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
 // Source utilised with the kind permission of Landon Dyer
 //
 
 #include "procln.h"
-#include "listing.h"
+#include "6502.h"
 #include "amode.h"
+#include "direct.h"
+#include "dsp56k_amode.h"
+#include "dsp56k_mach.h"
 #include "error.h"
-#include "sect.h"
 #include "expr.h"
+#include "listing.h"
 #include "mach.h"
-#include "direct.h"
 #include "macro.h"
-#include "symbol.h"
+#include "op.h"
 #include "riscasm.h"
+#include "sect.h"
+#include "symbol.h"
 
-#define DEF_KW                                 // Declare keyword values 
+#define DEF_KW                                 // Declare keyword values
 #include "kwtab.h"                             // Incl generated keyword tables & defs
 
 #define DEF_MN                                 // Incl 68k keyword definitions
 #define DECL_MR
 #include "risckw.h"
 
+#define DEF_MP                                 // Include 6502 keyword definitions
+#define DECL_MP                                        // Include 6502 keyword state machine tables
+#include "6502kw.h"
+
+#define DEF_MO                                 // Include OP keyword definitions
+#define DECL_MO                                        // Include OP keyword state machine tables
+#include "opkw.h"
+
+#define DEF_DSP                                        // Include DSP56K keywords definitions
+#define DECL_DSP                               // Include DSP56K keyword state machine tables
+#include "dsp56kkw.h"
+
 
 IFENT * ifent;                                 // Current ifent
 static IFENT ifent0;                   // Root ifent
-static IFENT * f_ifent;                        // Freelist of ifents
-static int disabled;                   // Assembly conditionally disabled
-int just_bss;                                  // 1, ds.b in microprocessor mode 
-VALUE pcloc;                                   // Value of "PC" at beginning of line 
+IFENT * f_ifent;                               // Freelist of ifents
+int disabled;                                  // Assembly conditionally disabled
+int just_bss;                                  // 1, ds.b in microprocessor mode
+uint32_t pcloc;                                        // Value of "PC" at beginning of line
 SYM * lab_sym;                                 // Label on line (or NULL)
+char * label_defined;                  // The name of the last label defined in current line (if any)
 
 const char extra_stuff[] = "extra (unexpected) text found after addressing mode";
 const char comma_error[] = "missing comma";
@@ -45,7 +62,7 @@ const char locgl_error[] = "cannot GLOBL local symbol";
 const char lab_ignored[] = "label ignored";
 
 // Table to convert an addressing-mode number to a bitmask.
-LONG amsktab[0112] = {
+LONG amsktab[0124] = {
        M_DREG, M_DREG, M_DREG, M_DREG,
        M_DREG, M_DREG, M_DREG, M_DREG,
 
@@ -67,25 +84,35 @@ LONG amsktab[0112] = {
        M_AINDEXED, M_AINDEXED, M_AINDEXED, M_AINDEXED,
        M_AINDEXED, M_AINDEXED, M_AINDEXED, M_AINDEXED,
 
-       M_ABSW,                                                                                 // 070
-       M_ABSL,                                                                                 // 071
-       M_PCDISP,                                                                               // 072
-       M_PCINDEXED,                                                                    // 073
-       M_IMMED,                                                                                // 074
-       0L,                                                                                             // 075
-       0L,                                                                                             // 076
-       0L,                                                                                             // 077
-       M_ABASE,                                                                                // 0100
-       M_MEMPOST,                                                                              // 0101 
-       M_MEMPRE,                                                                               // 0102 
-       M_PCBASE,                                                                               // 0103
-       M_PCMPOST,                                                                              // 0104
-       M_PCMPRE,                                                                               // 0105
-       M_AM_USP,                                                                               // 0106
-       M_AM_SR,                                                                                // 0107 
-       M_AM_CCR,                                                                               // 0110
-       M_AM_NONE                                                                               // 0111 
-};                                                                                                     // 0112 length
+       M_ABSW,                 // 070
+       M_ABSL,                 // 071
+       M_PCDISP,               // 072
+       M_PCINDEXED,    // 073
+       M_IMMED,                // 074
+       0L,                             // 075
+       0L,                             // 076
+       0L,                             // 077
+       M_ABASE,                // 0100
+       M_MEMPOST,              // 0101
+       M_MEMPRE,               // 0102
+       M_PCBASE,               // 0103
+       M_PCMPOST,              // 0104
+       M_PCMPRE,               // 0105
+       M_AM_USP,               // 0106
+       M_AM_SR,                // 0107
+       M_AM_CCR,               // 0110
+       M_AM_NONE,              // 0111
+       0x30,                   // 0112
+       0x30,                   // 0113
+       0L,                             // 0114
+       0L,                             // 0115
+       0L,                             // 0116
+       0L,                             // 0117
+       M_CACHE40,              // 0120
+       M_CREG,                 // 0121
+       M_FREG,                 // 0122
+       M_FPSCR                 // 0123
+};                                     // 0123 length
 
 
 // Function prototypes
@@ -117,7 +144,7 @@ void Assemble(void)
        char * equate;                          // Symbol (or NULL)
        int labtyp = 0;                         // Label type (':', DCOLON)
        int equtyp = 0;                         // Equ type ('=', DEQUALS)
-       VALUE eval;                                     // Expression value
+       uint64_t eval;                          // Expression value
        WORD eattr;                                     // Expression attributes
        SYM * esym;                                     // External symbol involved in expr.
        WORD siz = 0;                           // Size suffix to mnem/diretve/macro
@@ -136,7 +163,7 @@ loop:                                                       // Line processing loop label
        // Get another line of tokens
        if (TokenizeLine() == TKEOF)
        {
-if (debug) printf("Assemble: Found TKEOF flag...\n");
+DEBUG { printf("Assemble: Found TKEOF flag...\n"); }
                if (list_flag && listflag)                      // Flush last line of source
                        listeol();
 
@@ -146,7 +173,7 @@ if (debug) printf("Assemble: Found TKEOF flag...\n");
                return;
        }
 
-       DEBUG DumpTokenBuffer();
+       DEBUG { DumpTokenBuffer(); }
 
        if (list_flag)
        {
@@ -160,10 +187,11 @@ if (debug) printf("Assemble: Found TKEOF flag...\n");
 
        state = -3;                                                             // No keyword (just EOL)
        label = NULL;                                                   // No label
+       label_defined = NULL;                                   // No label defined yet
        lab_sym = NULL;                                                 // No (exported) label
        equate = NULL;                                                  // No equate
        tk = tok;                                                               // Save first token in line
-       pcloc = (VALUE)sloc;                                    // Set beginning-of-line PC
+       pcloc = (uint32_t)sloc;                                 // Set beginning-of-line PC
 
 loop1:                                                                         // Internal line processing loop
 
@@ -173,7 +201,11 @@ loop1:                                                                             // Internal line processing loop
        // First token MUST be a symbol (Shamus: not sure why :-/)
        if (*tok != SYMBOL)
        {
-               error("syntax error; expected symbol");
+               if ((*tok >= KW_D0) && (*tok <= KW_R31))
+                       error("cannot use reserved keyword as label name or .equ");
+               else
+                       error("syntax error; expected symbol");
+
                goto loop;
        }
 
@@ -203,6 +235,8 @@ as68label:
                        if (HandleLabel(label, labtyp) != 0)
                                goto loop;
 
+                       label_defined = label;
+
                        goto as68label;
                }
        }
@@ -211,7 +245,7 @@ as68label:
        if (*tok == EOL)
                goto normal;
 
-       // Next token MUST be a symbol
+       // First token MUST be a symbol (if we get here, tok didn't advance)
        if (*tok++ != SYMBOL)
        {
                error("syntax error; expected symbol");
@@ -251,12 +285,17 @@ as68label:
        // Check for ".b" ".w" ".l" after directive, macro or mnemonic.
        siz = SIZN;
 
-       if (*tok == DOTW) 
-               siz = SIZW, tok++;
-       else if (*tok == DOTL)
-               siz = SIZL, tok++;
-       else if (*tok == DOTB)
-               siz = SIZB, tok++;
+       switch (*tok)
+       {
+       case DOTW: siz = SIZW, tok++; break;
+       case DOTL: siz = SIZL, tok++; break;
+       case DOTB: siz = SIZB, tok++; break;
+       case DOTD: siz = SIZD, tok++; break;
+       case DOTP: siz = SIZP, tok++; break;
+       case DOTQ: siz = SIZQ, tok++; break;
+       case DOTS: siz = SIZS, tok++; break;
+       case DOTX: siz = SIZX, tok++; break;
+       }
 
        // Do special directives (500..999) (These must be handled in "real time")
        if (state >= 500 && state < 1000)
@@ -265,13 +304,16 @@ as68label:
                {
                case MN_IF:
                        d_if();
-               goto loop;
+                       goto loop;
+
                case MN_ELSE:
                        d_else();
                        goto loop;
+
                case MN_ENDIF:
                        d_endif();
                        goto loop;
+
                case MN_IIF:                                            // .iif --- immediate if
                        if (disabled || expr(exprbuf, &eval, &eattr, &esym) != OK)
                                goto loop;
@@ -292,6 +334,7 @@ as68label:
                                goto loop;
 
                        goto loop1;
+
                case MN_MACRO:                                          // .macro --- macro definition
                        if (!disabled)
                        {
@@ -303,6 +346,7 @@ as68label:
                        }
 
                        goto loop;
+
                case MN_EXITM:                                          // .exitm --- exit macro
                case MN_ENDM:                                           // .endm --- same as .exitm
                        if (!disabled)
@@ -314,6 +358,7 @@ as68label:
                        }
 
                        goto loop;
+
                case MN_REPT:
                        if (!disabled)
                        {
@@ -322,12 +367,15 @@ as68label:
                                {
                                        if (HandleLabel(label, labtyp) != 0)
                                                goto loop;
+
+                                       label_defined = label;
                                }
 
-                               defrept();
+                               HandleRept();
                        }
 
                        goto loop;
+
                case MN_ENDR:
                        if (!disabled)
                                error("mis-nested .endr");
@@ -368,19 +416,17 @@ normal:
                {
                        if ((equtyp == EQUREG) && (sy->sattre & UNDEF_EQUR))
                        {
-//REALLY?                              sy->sattre |= ~UNDEF_EQUR; 
-                               sy->sattre &= ~UNDEF_EQUR; 
+                               sy->sattre &= ~UNDEF_EQUR;
                                sy->svalue = 0;
                        }
                        else if ((equtyp == CCDEF) && (sy->sattre & UNDEF_CC))
                        {
-//REALLY?                              sy->sattre |= ~UNDEF_CC;
                                sy->sattre &= ~UNDEF_CC;
                                sy->svalue = 0;
                        }
                        else
                        {
-                               errors("multiple equate to '%s'", sy->sname);
+                               error("multiple equate to '%s'", sy->sname);
                                goto loop;
                        }
                }
@@ -436,9 +482,9 @@ When checking to see if it's already been equated, issue a warning.
                                        tok += 3;
 
                                        // Anything other than a 0 or a 1 will result in "No Bank"
-                                       if (*tok == 0)
+                                       if (*(uint64_t *)tok == 0)
                                                registerbank = BANK_0;
-                                       else if (*tok == 1)
+                                       else if (*(uint64_t *)tok == 1)
                                                registerbank = BANK_1;
                                }
 
@@ -455,8 +501,6 @@ When checking to see if it's already been equated, issue a warning.
                                sy->sattre |= regbank;          // Store register bank
 #endif
                                eattr = ABS | DEFINED | GLOBAL;
-// & what does this $80000080 constant mean???
-//                             eval = 0x80000080 + (riscreg) + (registerbank << 8);
                                eval = riscreg;
                                tok++;
                        }
@@ -490,7 +534,7 @@ When checking to see if it's already been equated, issue a warning.
                        if (reglist(&rmask) < 0)
                                goto loop;
 
-                       eval = (VALUE)rmask;
+                       eval = (uint32_t)rmask;
                        eattr = ABS | DEFINED;
                }
                else if (equtyp == CCDEF)
@@ -518,7 +562,7 @@ When checking to see if it's already been equated, issue a warning.
                        else if (expr(exprbuf, &eval, &eattr, &esym) != OK)
                                goto loop;
                }
-               //equ a equr
+               // equ an equr
                else if (*tok == SYMBOL)
                {
                        sy2 = lookup(string[tok[1]], LABEL, j);
@@ -528,7 +572,6 @@ When checking to see if it's already been equated, issue a warning.
                                sy->stype = sy2->stype;
                                sy->sattr = sy2->sattr;
                                sy->sattre = sy2->sattre;
-//ICK                          sy->svalue = (sy2->svalue & 0xFFFFF0FF);
                                sy->svalue = sy2->svalue;
                                goto loop;
                        }
@@ -548,9 +591,9 @@ When checking to see if it's already been equated, issue a warning.
                sy->svalue = eval;
 
                if (list_flag)                                  // Put value in listing
-                       listvalue(eval);
+                       listvalue((uint32_t)eval);
 
-               at_eol();                                               // Must be at EOL now
+               ErrorIfNotAtEOL();                              // Must be at EOL now
                goto loop;
        }
 
@@ -560,12 +603,49 @@ When checking to see if it's already been equated, issue a warning.
                // Non-zero == error occurred
                if (HandleLabel(label, labtyp) != 0)
                        goto loop;
+
+               label_defined = label;
        }
 
        // Punt on EOL
        if (state == -3)
                goto loop;
 
+       // If we're in 6502 mode and are still in need of a mnemonic, then search
+       // for valid 6502 mnemonic.
+       if (m6502 && (state < 0 || state >= 1000))
+       {
+#ifdef ST
+               state = kmatch(opname, mpbase, mpcheck, mptab, mpaccept);
+#else
+               for(state=0, p=opname; state>= 0; )
+               {
+                       j = mpbase[state] + tolowertab[*p];
+
+                       if (mpcheck[j] != state)        // Reject, character doesn't match
+                       {
+                               state = -1;             // No match
+                               break;
+                       }
+
+                       if (!*++p)
+                       {                       // Must accept or reject at EOS
+                               state = mpaccept[j];    // (-1 on no terminal match)
+                               break;
+                       }
+
+                       state = mptab[j];
+               }
+#endif
+
+               // Call 6502 code generator if we found a mnemonic
+               if (state >= 2000)
+               {
+                       m6502cg(state - 2000);
+                       goto loop;
+               }
+       }
+
        // If we are in GPU or DSP mode and still in need of a mnemonic then search
        // for one
        if ((rgpu || rdsp) && (state < 0 || state >= 1000))
@@ -599,13 +679,132 @@ When checking to see if it's already been equated, issue a warning.
                }
        }
 
+       // If we are in OP mode and still in need of a mnemonic then search for one
+       if (robjproc && ((state < 0) || (state >= 1000)))
+       {
+               for(state=0, p=opname; state>=0;)
+               {
+                       j = mobase[state] + (int)tolowertab[*p];
+
+                       // Reject, character doesn't match
+                       if (mocheck[j] != state)
+                       {
+                               state = -1;                                     // No match
+                               break;
+                       }
+
+                       // Must accept or reject at EOS
+                       if (!*++p)
+                       {
+                               state = moaccept[j];            // (-1 on no terminal match)
+                               break;
+                       }
+
+                       state = motab[j];
+               }
+
+               // Call OP code generator if we found a mnemonic
+               if (state >= 3100)
+               {
+                       GenerateOPCode(state);
+                       goto loop;
+               }
+       }
+
+       // If we are in 56K mode and still in need of a mnemonic then search for one
+       if (dsp56001 && ((state < 0) || (state >= 1000)))
+       {
+               for(state=0, p=opname; state>=0;)
+               {
+                       j = dspbase[state] + (int)tolowertab[*p];
+
+                       // Reject, character doesn't match
+                       if (dspcheck[j] != state)
+                       {
+                               state = -1;                                     // No match
+                               break;
+                       }
+
+                       // Must accept or reject at EOS
+                       if (!*++p)
+                       {
+                               state = dspaccept[j];           // (-1 on no terminal match)
+                               break;
+                       }
+
+                       state = dsptab[j];
+               }
+
+               // Call DSP code generator if we found a mnemonic
+               if (state >= 2000)
+               {
+                       LONG parcode;
+                       int operands;
+                       MNTABDSP * md = &dsp56k_machtab[state - 2000];
+                       deposit_extra_ea = 0;   // Assume no extra word needed
+
+                       if (md->mnfunc == dsp_mult)
+                       {
+                               // Special case for multiplication instructions: they require
+                               // 3 operands
+                               if ((operands = dsp_amode(3)) == ERROR)
+                                       goto loop;
+                       }
+                       else if ((md->mnattr & PARMOVE) && md->mn0 != M_AM_NONE)
+                       {
+                               if (dsp_amode(2) == ERROR)
+                                       goto loop;
+                       }
+                       else if ((md->mnattr & PARMOVE) && md->mn0 == M_AM_NONE)
+                       {
+                               // Instructions that have parallel moves but use no operands
+                               // (probably only move). In this case, don't parse addressing
+                               // modes--just go straight to parallel parse
+                               dsp_am0 = dsp_am1 = M_AM_NONE;
+                       }
+                       else
+                       {
+                               // Non parallel move instructions can have up to 4 parameters
+                               // (well, only tcc instructions really)
+                               if ((operands = dsp_amode(4)) == ERROR)
+                                       goto loop;
+
+                               if (operands == 4)
+                               {
+                                       dsp_tcc4(md->mninst);
+                                       goto loop;
+                               }
+                       }
+
+                       if (md->mnattr & PARMOVE)
+                       {
+                               // Check for parallel moves
+                               if ((parcode = parmoves(dsp_a1reg)) == ERROR)
+                                       goto loop;
+                       }
+                       else
+                       {
+                               if (*tok != EOL)
+                                       error("parallel moves not allowed with this instruction");
+
+                               parcode = 0;
+                       }
+
+                       while ((dsp_am0 & md->mn0) == 0 || (dsp_am1 & md->mn1) == 0)
+                               md = &dsp56k_machtab[md->mncont];
+
+                       (*md->mnfunc)(md->mninst | (parcode << 8));
+                       goto loop;
+               }
+       }
+
        // Invoke macro or complain about bad mnemonic
        if (state < 0)
        {
-               if ((sy = lookup(opname, MACRO, 0)) != NULL) 
+               if ((sy = lookup(opname, MACRO, 0)) != NULL)
                        InvokeMacro(sy, siz);
                else
-                       errors("unknown op '%s'", opname);
+                       error("unknown op '%s'", opname);
 
                goto loop;
        }
@@ -618,10 +817,10 @@ When checking to see if it's already been equated, issue a warning.
        }
 
        // Do mnemonics
-       // o  can't deposit instrs in BSS or ABS
-       // o  do automatic .EVEN for instrs
-       // o  allocate space for largest possible instr
-       // o  can't do ".b" operations with an address register
+       //  o  can't deposit instrs in BSS or ABS
+       //  o  do automatic .EVEN for instrs
+       //  o  allocate space for largest possible instr
+       //  o  can't do ".b" operations with an address register
        if (scattr & SBSS)
        {
                error("cannot initialize non-storage (BSS) section");
@@ -660,16 +859,16 @@ When checking to see if it's already been equated, issue a warning.
                goto loop;
        }
 
-       for(;;)
-       {
-               if ((m->mnattr & siz) && (amsk0 & m->mn0) != 0 && (amsk1 & m->mn1) != 0)
-               {
-                       (*m->mnfunc)(m->mninst, siz);
-                       goto loop;
-               }
+       // Keep a backup of chptr (used for optimisations during codegen)
+       chptr_opcode = chptr;
 
+       while (!(m->mnattr & siz) || (amsk0 & m->mn0) == 0 || (amsk1 & m->mn1) == 0)
                m = &machtab[m->mncont];
-       }
+
+       DEBUG { printf("    68K: mninst=$%X, siz=$%X, mnattr=$%X, amsk0=$%X, mn0=$%X, amsk1=$%X, mn1=$%X\n", m->mninst, siz, m->mnattr, amsk0, m->mn0, amsk1, m->mn1); }
+
+       (*m->mnfunc)(m->mninst, siz);
+       goto loop;
 }
 
 
@@ -686,11 +885,10 @@ int HandleLabel(char * label, int labelType)
        {
                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);
+               return error("multiply-defined label '%s'", label);
 
        // Put symbol in "order of definition" list if it's not already in it
        AddToSymbolDeclarationList(symbol);
@@ -708,6 +906,8 @@ int HandleLabel(char * label, int labelType)
 
        lab_sym = symbol;
 
+       // Yes, our CS professors told us to write checks for equality this way,
+       // but damn, it hurts my brain every time I look at it. :-/
        if (0 == environment)
                curenv++;
 
@@ -723,78 +923,3 @@ int HandleLabel(char * label, int labelType)
        return 0;
 }
 
-
-// 
-// .if, Start conditional assembly
-//
-int d_if(void)
-{
-       IFENT * rif;
-       WORD eattr;
-       VALUE eval;
-       SYM * esym;
-
-       // Alloc an IFENTRY
-       if ((rif = f_ifent) == 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;
-}
-