]> Shamusworld >> Repos - rmac/blobdiff - rmac.c
Version bump for last commit. :-)
[rmac] / rmac.c
diff --git a/rmac.c b/rmac.c
index 45cd1d8f0532ff69347de1979fa1e6ed3da18f69..17715f7ad6c86e8f9f0c6cffced6920e7b76ae00 100644 (file)
--- a/rmac.c
+++ b/rmac.c
@@ -1,51 +1,77 @@
 //
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// RMAC - Renamed Macro Assembler for all Atari computers
 // RMAC.C - Main Application Code
-// Copyright (C) 199x Landon Dyer, 2011 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2022 Reboot and Friends
 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
 // Source utilised with the kind permission of Landon Dyer
 //
 
 #include "rmac.h"
+#include "6502.h"
+#include "debug.h"
+#include "direct.h"
+#include "dsp56k.h"
 #include "error.h"
-#include "listing.h"
-#include "procln.h"
-#include "token.h"
 #include "expr.h"
-#include "sect.h"
+#include "listing.h"
 #include "mark.h"
 #include "macro.h"
+#include "object.h"
+#include "procln.h"
 #include "riscasm.h"
-#include "direct.h"
-#include "version.h"
-#include "debug.h"
+#include "sect.h"
 #include "symbol.h"
-#include "object.h"
+#include "token.h"
+#include "version.h"
 
 int perm_verb_flag;                            // Permanently verbose, interactive mode
 int list_flag;                                 // "-l" listing flag on command line
+int list_pag = 1;                              // Enable listing pagination by default
 int verb_flag;                                 // Be verbose about what's going on
-int as68_flag;                                 // as68 kludge mode
+int m6502;                                             // 1, assembling 6502 code
 int glob_flag;                                 // Assume undefined symbols are global
-int lsym_flag;                                 // Include local symbols in object file
-int sbra_flag;                                 // Warn about possible short branches
+int lsym_flag;                                 // Include local symbols in object file (ALWAYS true)
+int dsym_flag;                                 // Gen debug syms (Requires obj_format = BSD)
+int optim_warn_flag;                   // Warn about possible short branches
 int prg_flag;                                  // !=0, produce .PRG executable (2=symbols)
+int prg_extend;                                        // !=0, output extended .PRG symbols
 int legacy_flag;                               // Do stuff like insert code in RISC assembler
 int obj_format;                                        // Object format flag
 int debug;                                             // [1..9] Enable debugging levels
 int err_flag;                                  // '-e' specified
-int err_fd;                                            // File to write error messages to 
+int err_fd;                                            // File to write error messages to
 int rgpu, rdsp;                                        // Assembling Jaguar GPU or DSP code
+int robjproc;                                  // Assembling Jaguar Object Processor code
+int dsp56001;                                  // Assembling DSP 56001 code
 int list_fd;                                   // File to write listing to
-int regbank;                                   // RISC register bank
 int segpadsize;                                        // Segment padding size
-int endian;                                            // Host processor endianess
+int endian;                                            // Host processor endianess (0 = LE, 1 = BE)
+int *regbase;                                  // Points to current DFA register table (base)
+int *regtab;                                   // Points to current DFA register table (tab)
+int *regcheck;                                 // Points to current DFA register table (check)
+int *regaccept;                                        // Points to current DFA register table (accept)
 char * objfname;                               // Object filename pointer
 char * firstfname;                             // First source filename
 char * cmdlnexec;                              // Executable name, pointer to ARGV[0]
-char * searchpath;                             // Search path for include files 
+char searchpatha[512] = { 0 }; // Buffer to hold searchpath when specified
+char * searchpath = NULL;              // Search path for include files
 char defname[] = "noname.o";   // Default output filename
-int optim_flags[OPT_COUNT];    // Specific optimisations on/off matrix
+int optim_flags[OPT_COUNT_ALL] = { 0 };        // Specific optimisations on/off matrix
+int activecpu = CPU_68000;             // Active 68k CPU (68000 by default)
+int activefpu = FPU_NONE;              // Active FPU (none by default)
+int org68k_active = 0;                 // .org switch for 68k (only with RAW output format)
+uint32_t org68k_address;               // .org for 68k
+int correctMathRules;                  // 1, use C operator precedence in expressions
+uint32_t used_architectures;   // Bitmask that records exactly which architectures were used during assembly
+
+//
+// Convert a string to uppercase
+//
+void strtoupper(char * s)
+{
+       while (*s)
+               *s++ &= 0xDF;
+}
 
 //
 // Manipulate file extension.
@@ -67,7 +93,7 @@ char * fext(char * name, char * extension, int stripp)
        // Clobber any old extension, if requested
        if (stripp)
        {
-               for(s=beg; *s && *s!='.'; ++s) 
+               for(s=beg; *s && *s!='.'; ++s)
                        ;
 
                *s = '\0';
@@ -79,12 +105,23 @@ char * fext(char * name, char * extension, int stripp)
        return name;
 }
 
+static int is_sep(char c)
+{
+    const char *seps = PATH_SEPS;
+
+    for (seps = PATH_SEPS; *seps; seps++) {
+        if (*seps == c)
+            return 1;
+    }
+
+    return 0;
+}
 
 //
 // Return 'item'nth element of semicolon-seperated pathnames specified in the
 // enviroment string 's'. Copy the pathname to 'buf'.  Return 0 if the 'item'
 // nth path doesn't exist.
-// 
+//
 // ['item' ranges from 0 to N-1, where N = #elements in search path]
 //
 int nthpath(char * env_var, int itemno, char * buf)
@@ -98,13 +135,13 @@ int nthpath(char * env_var, int itemno, char * buf)
                return 0;
 
        while (itemno--)
-               while (*s != EOS && *s++ != ';')
+               while (*s != EOS && !is_sep(*s++))
                        ;
 
        if (*s == EOS)
                return 0;
 
-       while (*s != EOS && *s != ';')
+       while (*s != EOS && !is_sep(*s))
                *buf++ = *s++;
 
        *buf++ = EOS;
@@ -112,7 +149,6 @@ int nthpath(char * env_var, int itemno, char * buf)
        return 1;
 }
 
-
 //
 // Display command line help
 //
@@ -123,22 +159,46 @@ void DisplayHelp(void)
                "\n"
                "Options:\n"
                "  -? or -h          Display usage information\n"
-               "  -dsymbol[=value]  Define symbol\n"
+               "  -dsymbol[=value]  Define symbol (with optional value, default=0)\n"
                "  -e[errorfile]     Send error messages to file, not stdout\n"
                "  -f[format]        Output object file format\n"
-               "                    a: ALCYON (use this for ST)\n"
+               "                    a: ALCYON\n"
                "                    b: BSD (use this for Jaguar)\n"
+               "                    c: PRG (C64)\n"
+               "                    e: ELF\n"
+               "                    p: P56 (use this for DSP56001 only)\n"
+               "                    l: LOD (use this for DSP56001 only)\n"
+               "                    x: com/exe/xex (Atari 800)\n"
+               "                    r: absolute address\n"
+               "  -g                Output source level debug information (BSD object only)\n"
                "  -i[path]          Directory to search for include files\n"
                "  -l[filename]      Create an output listing file\n"
+               "  -l*[filename]     Create an output listing file without pagination\n"
+               "  -m[cpu]           Select default CPU. Available options:\n"
+               "                    68000, 68020, 68030, 68040, 68060, 6502, tom, jerry, 56001\n"
                "  -n                Don't do things behind your back in RISC assembler\n"
                "  -o file           Output file name\n"
                "  +o[value]         Turn a specific optimisation on\n"
+               "                    Available optimisation switches:\n"
+               "                    o0: Absolute long addresses to word\n"
+               "                    o1: move.l #x,dn/an to moveq\n"
+               "                    o2: Word branches to short\n"
+               "                    o3: Outer displacement 0(an) to (an)\n"
+               "                    o4: lea size(An),An to addq #size,An\n"
+               "                    o5: 68020+ Absolute long base/outer disp. to word\n"
+               "                    o6: Null branches to NOP\n"
+               "                    o7: clr.l Dx to moveq #0,Dx\n"
+               "                    o8: adda.w/l #x,Dy to addq.w/l #x,Dy\n"
+               "                    o9: adda.w/l #x,Ay to lea x(Dy),Ay\n"
+               "                    o10: 56001 Use short format for immediate values if possible\n"
+               "                    o11: 56001 Auto convert short addressing mode to long (default: on)\n"
+               "                    o30: Enforce PC relative (alternative name: op)\n"
                "  ~o[value]         Turn a specific optimisation off\n"
                "  +oall             Turn all optimisations on\n"
                "  ~oall             Turn all optimisations off\n"
-               "  -p                Create an ST .prg (without symbols)\n"
-               "  -ps               Create an ST .prg (with symbols)\n"
-               "                    Forces -fa\n"
+               "  -p                Create an ST .prg (without symbols). Forces -fa\n"
+               "  -ps               Create an ST .prg (with symbols). Forces -fa\n"
+               "  -px               Create an ST .prg (with exsymbols). Forces -fa\n"
                "  -r[size]          Pad segments to boundary size specified\n"
                "                    w: word (2 bytes, default alignment)\n"
                "                    l: long (4 bytes)\n"
@@ -151,6 +211,7 @@ void DisplayHelp(void)
                "  -v                Set verbose mode\n"
                "  -x                Turn on debugging mode\n"
                "  -y[pagelen]       Set page line length (default: 61)\n"
+               "  -4                Use C style operator precedence\n"
                "\n", cmdlnexec);
 }
 
@@ -165,49 +226,116 @@ void DisplayVersion(void)
                "| '__| '_ ` _ \\ / _` |/ __|\n"
                "| |  | | | | | | (_| | (__ \n"
                "|_|  |_| |_| |_|\\__,_|\\___|\n"
-               "\nReboot's Macro Assembler\n"
-               "Copyright (C) 199x Landon Dyer, 2011-2015 Reboot\n"
+               "\nRenamed Macro Assembler\n"
+               "Copyright (C) 199x Landon Dyer, 2011-2022 Reboot and Friends\n"
                "V%01i.%01i.%01i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
 }
 
-
 //
 // Parse optimisation options
 //
 int ParseOptimization(char * optstring)
 {
-    int onoff = 0;
-
-    if (*optstring == '+')
-        onoff = 1;
-    else if (*optstring != '~')
-        return ERROR;
-
-    if ((optstring[2] == 'a' || optstring[2] == 'A') &&
-        (optstring[3] == 'l' || optstring[3] == 'L') &&
-        (optstring[4] == 'l' || optstring[4] == 'L'))
-    {
-        memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
-        return OK;
-    }
-    else if (optstring[1] == 'o' || optstring[1] == 'O') //Turn on specific optimisation
+       int onoff = 0;
+
+       while (*optstring)
        {
-        int opt_no = atoi(&optstring[2]);
-        if ((opt_no >= 0) && (opt_no < OPT_COUNT))
-            optim_flags[opt_no] = onoff;
-        else
-        {
-            return ERROR;
-        }
-    }
-    else
-    {
-        return ERROR;
-    }
+               if (*optstring == '+')
+                       onoff = 1;
+               else if (*optstring != '~')
+                       return ERROR;
+
+        if (optstring[2] == 0)
+            return error(".opt called with zero arguments");
+
+               if ((optstring[2] == 'a' || optstring[2] == 'A')
+                       && (optstring[3] == 'l' || optstring[3] == 'L')
+                       && (optstring[4] == 'l' || optstring[4] == 'L'))
+               {
+                       memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
+                       optstring += 5;
+               }
+               else if (optstring[1] == 'o' || optstring[1] == 'O') // Turn on specific optimisation
+               {
+                       if (optstring[2] == 'p' || optstring[2] == 'P')
+                       {
+                               optim_flags[OPT_PC_RELATIVE] = onoff;
+                               optstring += 3;
+                       }
+                       else
+                       {
+                               int opt_no = atoi(&optstring[2]);
+
+                               if ((opt_no >= 0) && (opt_no < OPT_COUNT))
+                               {
+                                       optim_flags[opt_no] = onoff;
+                                       optstring += 3;
+
+                                       // If opt_no is 2 digits then consume an extra character.
+                                       // Sounds a bit sleazy but we know we're not going to hit
+                                       // more than 100 optimisation switches so this should be
+                                       // fine. If we do hit that number then it'll probably be
+                                       // time to burn the whole codebase and start from scratch.
+                                       if (opt_no > 9)
+                                               optstring++;
+                               }
+                               else
+                                       return ERROR;
+                       }
+               }
+               else
+               {
+                       return ERROR;
+               }
+
+               if (*optstring == ',')
+                       optstring++;
+       }
+       return OK;
 }
 
+static void ProcessFile(int fd, char *fname)
+{
+       char *dbgname = fname;
 
-// 
+       if (NULL == fname)
+       {
+               fname = defname; // Kludge first filename
+               dbgname = "(stdin)";
+       }
+
+       // First file operations:
+       if (firstfname == NULL)
+       {
+               // Record first filename.
+               firstfname = fname;
+
+               // Validate option compatibility
+               if (dsym_flag)
+               {
+                       if (obj_format != BSD)
+                       {
+                               printf("-g: debug information only supported with BSD object file format\n");
+                               dsym_flag = 0;
+                               errcnt++;
+                       }
+                       else
+                       {
+                               GenMainFileSym(dbgname);
+                       }
+               }
+       }
+
+       include(fd, dbgname);
+       Assemble();
+}
+
+extern int reg68base[53];
+extern int reg68tab[222];
+extern int reg68check[222];
+extern int reg68accept[222];
+
+//
 // Process command line arguments and do an assembly
 //
 int Process(int argc, char ** argv)
@@ -216,34 +344,42 @@ int Process(int argc, char ** argv)
        SYM * sy;                                               // Pointer to a symbol record
        char * s;                                               // String pointer
        int fd;                                                 // File descriptor
-       char fnbuf[FNSIZ];                              // Filename buffer 
+       char fnbuf[FNSIZ];                              // Filename buffer
        int i;                                                  // Iterator
-
-       errcnt = 0;                                             // Initialise error count
-       listing = 0;                                    // Initialise listing level
-       list_flag = 0;                                  // Initialise listing flag
-       verb_flag = perm_verb_flag;             // Initialise verbose flag
-       as68_flag = 0;                                  // Initialise as68 kludge mode
-       glob_flag = 0;                                  // Initialise .globl flag
-       sbra_flag = 0;                                  // Initialise short branch flag
-       debug = 0;                                              // Initialise debug flag
-       searchpath = NULL;                              // Initialise search path
-       objfname = NULL;                                // Initialise object filename
-       list_fname = NULL;                              // Initialise listing filename
-       err_fname = NULL;                               // Initialise error filename
-       obj_format = BSD;                               // Initialise object format
-       firstfname = NULL;                              // Initialise first filename
-       err_fd = ERROUT;                                // Initialise error file descriptor
-       err_flag = 0;                                   // Initialise error flag
-       rgpu = 0;                                               // Initialise GPU assembly flag
-       rdsp = 0;                                               // Initialise DSP assembly flag
+       int current_path_index = 0;             // Iterator for search paths
+
+       errcnt = 0;                                             // Initialize error count
+       listing = 0;                                    // Initialize listing level
+       list_flag = 0;                                  // Initialize listing flag
+       verb_flag = perm_verb_flag;             // Initialize verbose flag
+       glob_flag = 0;                                  // Initialize .globl flag
+       optim_warn_flag = 0;                    // Initialize short branch flag
+       debug = 0;                                              // Initialize debug flag
+       objfname = NULL;                                // Initialize object filename
+       list_fname = NULL;                              // Initialize listing filename
+       err_fname = NULL;                               // Initialize error filename
+       obj_format = BSD;                               // Initialize object format
+       firstfname = NULL;                              // Initialize first filename
+       err_fd = ERROUT;                                // Initialize error file descriptor
+       err_flag = 0;                                   // Initialize error flag
+       rgpu = 0;                                               // Initialize GPU assembly flag
+       rdsp = 0;                                               // Initialize DSP assembly flag
+       robjproc = 0;                                   // Initialize OP assembly flag
        lsym_flag = 1;                                  // Include local symbols in object file
-       regbank = BANK_N;                               // No RISC register bank specified
+       dsym_flag = 0;                                  // No debug sym generation by default
        orgactive = 0;                                  // Not in RISC org section
        orgwarning = 0;                                 // No ORG warning issued
-       segpadsize = 2;                                 // Initialise segment padding size
-
-       // Initialise modules
+       segpadsize = 2;                                 // Initialize segment padding size
+    dsp_orgmap[0].start = 0;           // Initialize 56001 org initial address
+    dsp_orgmap[0].memtype = ORG_P;     // Initialize 56001 org start segment
+       m6502 = 0;                                              // 6502 mode off by default
+       regbase = reg68base;                    // Initialise DFA register tables
+       regtab = reg68tab;                              // Idem
+       regcheck = reg68check;                  // Idem
+       regaccept = reg68accept;                // Idem
+    correctMathRules = 0;                      // respect operator precedence
+       used_architectures = 0;                 // Initialise used architectures bitfield
+       // Initialize modules
        InitSymbolTable();                              // Symbol table
        InitTokenizer();                                // Tokenizer
        InitLineProcessor();                    // Line processor
@@ -252,14 +388,18 @@ int Process(int argc, char ** argv)
        InitMark();                                             // Mark tape-recorder
        InitMacro();                                    // Macro processor
        InitListing();                                  // Listing generator
+       Init6502();                                             // 6502 assembler
 
        // Process command line arguments and assemble source files
-       for(argno=0; argno<argc; ++argno)
+       for(argno=0; argno<argc; argno++)
        {
                if (*argv[argno] == '-')
                {
                        switch (argv[argno][1])
                        {
+                       case '4':
+                               correctMathRules = 1;
+                               break;
                        case 'd':                               // Define symbol
                        case 'D':
                                for(s=argv[argno]+2; *s!=EOS;)
@@ -287,7 +427,7 @@ int Process(int argc, char ** argv)
                                }
 
                                sy->sattr = DEFINED | EQUATED | ABS;
-                               sy->svalue = (*s ? (VALUE)atoi(s) : 0);
+                               sy->svalue = (*s ? (uint64_t)atoi(s) : 0);
                                break;
                        case 'e':                               // Redirect error message output
                        case 'E':
@@ -302,10 +442,34 @@ int Process(int argc, char ** argv)
                                case 'A':
                                        obj_format = ALCYON;
                                        break;
-                               case 'b':                       // -fb = BSD (Jaguar Recommended)
+                               case 'b':                       // -fb = BSD (Jaguar Recommended: 3 out 4 jaguars recommend it!)
                                case 'B':
                                        obj_format = BSD;
                                        break;
+                               case 'c':
+                               case 'C':
+                                       obj_format = C64PRG;
+                                       break;
+                               case 'e':                       // -fe = ELF
+                               case 'E':
+                                       obj_format = ELF;
+                                       break;
+                case 'l':           // -fl = LOD
+                case 'L':
+                    obj_format = LOD;
+                    break;
+                case 'p':           // -fp = P56
+                case 'P':
+                    obj_format = P56;
+                                       break;
+                               case 'x':                       // -fx = COM/EXE/XEX
+                               case 'X':
+                                       obj_format = XEX;
+                                       break;
+                case 'r':           // -fr = Absolute address
+                case 'R':
+                    obj_format = RAW;
+                    break;
                                default:
                                        printf("-f: unknown object format specified\n");
                                        errcnt++;
@@ -314,19 +478,85 @@ int Process(int argc, char ** argv)
                                break;
                        case 'g':                               // Debugging flag
                        case 'G':
-                               printf("Debugging flag (-g) not yet implemented\n");
+                               dsym_flag = 1;
                                break;
                        case 'i':                               // Set directory search path
                        case 'I':
-                               searchpath = argv[argno] + 2;
+                       {
+                               strcat(searchpatha, argv[argno] + 2);
+                               strcat(searchpatha, ";");
+                               searchpath = searchpatha;
+
+                               // Check to see if include paths actually exist
+                               char current_path[256];
+
+                               for(i=current_path_index; nthpath("RMACPATH", i, current_path)!=0; i++)
+                               {
+                                       if (strlen(current_path) > 0)
+                                       {
+                                               DIR * test = opendir(current_path);
+
+                                               if (test == NULL)
+                                               {
+                                                       printf("Invalid include path: %s\n", current_path);
+                                                       errcnt++;
+                                                       return errcnt;
+                                               }
+
+                                               closedir(test);
+                                       }
+                               }
+
+                               current_path_index = i - 1;
                                break;
+                       }
                        case 'l':                               // Produce listing file
                        case 'L':
-                               list_fname = argv[argno] + 2;
+                               if (*(argv[argno] + 2) == '*')
+                               {
+                                       list_fname = argv[argno] + 3;
+                                       list_pag = 0;    // Special case - turn off pagination
+                               }
+                               else
+                               {
+                                       list_fname = argv[argno] + 2;
+                               }
+
                                listing = 1;
                                list_flag = 1;
                                lnsave++;
                                break;
+                       case 'm':
+                       case 'M':
+                               if (strcmp(argv[argno] + 2, "68000") == 0)
+                                       d_68000();
+                               else if (strcmp(argv[argno] + 2, "68020") == 0)
+                                       d_68020();
+                               else if (strcmp(argv[argno] + 2, "68030") == 0)
+                                       d_68030();
+                               else if (strcmp(argv[argno] + 2, "68040") == 0)
+                                       d_68040();
+                               else if (strcmp(argv[argno] + 2, "68060") == 0)
+                                       d_68060();
+                               else if (strcmp(argv[argno] + 2, "68881") == 0)
+                                       d_68881();
+                               else if (strcmp(argv[argno] + 2, "68882") == 0)
+                                       d_68882();
+                               else if (strcmp(argv[argno] + 2, "56001") == 0)
+                                       d_56001();
+                               else if (strcmp(argv[argno] + 2, "6502") == 0)
+                                       d_6502();
+                               else if (strcmp(argv[argno] + 2, "tom") == 0)
+                                       d_gpu();
+                               else if (strcmp(argv[argno] + 2, "jerry") == 0)
+                                       d_dsp();
+                               else
+                               {
+                                       printf("Unrecognized CPU '%s'\n", argv[argno] + 2);
+                                       errcnt++;
+                                       return errcnt;
+                               }
+                               break;
                        case 'o':                               // Direct object file output
                        case 'O':
                                if (argv[argno][2] != EOS)
@@ -348,7 +578,8 @@ int Process(int argc, char ** argv)
                        case 'P':
                                /*
                                 * -p           .PRG generation w/o symbols
-                                * -ps  .PRG generation with symbols
+                                * -ps          .PRG generation with symbols
+                                * -px          .PRG generation with extended symbols
                                 */
                                switch (argv[argno][2])
                                {
@@ -361,9 +592,14 @@ int Process(int argc, char ** argv)
                                                prg_flag = 2;
                                                break;
 
+                                       case 'x':
+                                       case 'X':
+                                               prg_flag = 3;
+                                               break;
+
                                        default:
                                                printf("-p: syntax error\n");
-                                               ++errcnt;
+                                               errcnt++;
                                                return errcnt;
                                }
 
@@ -375,7 +611,7 @@ int Process(int argc, char ** argv)
                        case 'R':
                                switch(argv[argno][2])
                                {
-                               case 'w': case 'W': segpadsize = 2;  break;  
+                               case 'w': case 'W': segpadsize = 2;  break;
                                case 'l': case 'L': segpadsize = 4;  break;
                                case 'p': case 'P': segpadsize = 8;  break;
                                case 'd': case 'D': segpadsize = 16; break;
@@ -383,9 +619,9 @@ int Process(int argc, char ** argv)
                                default: segpadsize = 2; break; // Effective autoeven();
                                }
                                break;
-                       case 's':                               // Warn about possible short branches
+                       case 's':                               // Warn about possible short branches and applied optimisations
                        case 'S':
-                               sbra_flag = 1;
+                               optim_warn_flag = 1;
                                break;
                        case 'u':                               // Make undefined symbols .globl
                        case 'U':
@@ -411,17 +647,13 @@ int Process(int argc, char ** argv)
                                if (pagelen < 10)
                                {
                                        printf("-y: bad page length\n");
-                                       ++errcnt;
+                                       errcnt++;
                                        return errcnt;
                                }
 
                                break;
                        case EOS:                               // Input is stdin
-                               if (firstfname == NULL) // Kludge first filename
-                                       firstfname = defname;
-
-                               include(0, "(stdin)");
-                               Assemble();
+                               ProcessFile(0, NULL);
                                break;
                        case 'h':                               // Display command line usage
                        case 'H':
@@ -456,10 +688,6 @@ int Process(int argc, char ** argv)
                }
                else
                {
-                       // Record first filename.
-                       if (firstfname == NULL)
-                               firstfname = argv[argno];
-
                        strcpy(fnbuf, argv[argno]);
                        fext(fnbuf, ".s", 0);
                        fd = open(fnbuf, 0);
@@ -471,8 +699,7 @@ int Process(int argc, char ** argv)
                                continue;
                        }
 
-                       include(fd, fnbuf);
-                       Assemble();
+                       ProcessFile(fd, fnbuf);
                }
        }
 
@@ -480,10 +707,13 @@ int Process(int argc, char ** argv)
        // o  save current section (no more code generation)
        // o  do auto-even of all sections (or boundary alignment as requested
        //    through '-r')
+    // o  save the last pc value for 6502 (if we used 6502 at all) and
+    //    detemine if the last section contains anything
        // o  determine name of object file:
        //    -  "foo.o" for linkable output;
        //    -  "foo.prg" for GEMDOS executable (-p flag).
        SaveSection();
+       int temp_section = cursect;
 
        for(i=TEXT; i<=BSS; i<<=1)
        {
@@ -501,12 +731,36 @@ int Process(int argc, char ** argv)
                SaveSection();
        }
 
+       SwitchSection(M6502);
+
+       if (sloc != currentorg[0])
+       {
+               currentorg[1] = sloc;
+               currentorg += 2;
+       }
+
+       // This looks like an awful kludge...  !!! FIX !!!
+       if (temp_section & (M56001P | M56001X | M56001Y))
+       {
+               SwitchSection(temp_section);
+
+               if (chptr != dsp_currentorg->start)
+               {
+                       dsp_currentorg->end = chptr;
+                       dsp_currentorg++;
+               }
+       }
+
+       SwitchSection(TEXT);
+
        if (objfname == NULL)
        {
                if (firstfname == NULL)
                        firstfname = defname;
 
-               strcpy(fnbuf, firstfname);
+               // It's the size of fnbuf minus 5 because of the possible 4 char suffix
+               // + trailing null (added by fext()).
+               strncpy(fnbuf, firstfname, sizeof(fnbuf) - 5);
                fext(fnbuf, (prg_flag ? ".prg" : ".o"), 1);
                objfname = fnbuf;
        }
@@ -523,7 +777,7 @@ int Process(int argc, char ** argv)
        if (errcnt == 0)
        {
                if ((fd = open(objfname, _OPEN_FLAGS, _PERM_MODE)) < 0)
-                       cantcreat(objfname);
+                       CantCreateFile(objfname);
 
                if (verb_flag)
                {
@@ -556,7 +810,6 @@ int Process(int argc, char ** argv)
        return errcnt;
 }
 
-
 //
 // Determine processor endianess
 //
@@ -571,7 +824,6 @@ int GetEndianess(void)
        return 1;
 }
 
-
 //
 // Application entry point
 //
@@ -579,25 +831,17 @@ int main(int argc, char ** argv)
 {
        perm_verb_flag = 0;                             // Clobber "permanent" verbose flag
        legacy_flag = 1;                                // Default is legacy mode on (:-P)
-
-       // Set legacy optimisation flags to on
-       // and everything else to off
-       memset(optim_flags, 0, OPT_COUNT * sizeof(int));
-       optim_flags[OPT_ABS_SHORT] = 
-               optim_flags[OPT_MOVEL_MOVEQ] =
-               optim_flags[OPT_BSR_BCC_S] = 1;  
+       optim_flags[OPT_56K_SHORT] = 1; // This ensures compatibilty with Motorola's 56k assembler
 
        cmdlnexec = argv[0];                    // Obtain executable name
-
        endian = GetEndianess();                // Get processor endianess
 
        // If commands were passed in, process them
        if (argc > 1)
-               return Process(argc - 1, argv + 1);              
+               return Process(argc - 1, argv + 1);
 
        DisplayVersion();
        DisplayHelp();
 
        return 0;
 }
-