mirror of http://shamusworld.gotdns.org/git/rmac
714 lines
18 KiB
C
714 lines
18 KiB
C
//
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// RMAC - Reboot's Macro Assembler for all Atari computers
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// RMAC.C - Main Application Code
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// Copyright (C) 199x Landon Dyer, 2011-2018 Reboot and Friends
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// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
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// Source utilised with the kind permission of Landon Dyer
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//
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#include "rmac.h"
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#include "6502.h"
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#include "debug.h"
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#include "direct.h"
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#include "error.h"
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#include "expr.h"
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#include "listing.h"
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#include "mark.h"
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#include "macro.h"
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#include "object.h"
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#include "procln.h"
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#include "riscasm.h"
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#include "sect.h"
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#include "symbol.h"
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#include "token.h"
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#include "version.h"
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int perm_verb_flag; // Permanently verbose, interactive mode
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int list_flag; // "-l" listing flag on command line
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int list_pag = 1; // Enable listing pagination by default
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int verb_flag; // Be verbose about what's going on
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int m6502; // 1, assembling 6502 code
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int as68_flag; // as68 kludge mode
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int glob_flag; // Assume undefined symbols are global
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int lsym_flag; // Include local symbols in object file
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int sbra_flag; // Warn about possible short branches
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int prg_flag; // !=0, produce .PRG executable (2=symbols)
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int prg_extend; // !=0, output extended .PRG symbols
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int legacy_flag; // Do stuff like insert code in RISC assembler
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int obj_format; // Object format flag
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int debug; // [1..9] Enable debugging levels
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int err_flag; // '-e' specified
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int err_fd; // File to write error messages to
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int rgpu, rdsp; // Assembling Jaguar GPU or DSP code
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int robjproc; // Assembling Jaguar Object Processor code
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int dsp56001; // Assembling DSP 56001 code
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int list_fd; // File to write listing to
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int regbank; // RISC register bank
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int segpadsize; // Segment padding size
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int endian; // Host processor endianess (0 = LE, 1 = BE)
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char * objfname; // Object filename pointer
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char * firstfname; // First source filename
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char * cmdlnexec; // Executable name, pointer to ARGV[0]
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char * searchpath; // Search path for include files
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char defname[] = "noname.o"; // Default output filename
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int optim_flags[OPT_COUNT]; // Specific optimisations on/off matrix
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int activecpu = CPU_68000; // Active 68k CPU (68000 by default)
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int activefpu = FPU_NONE; // Active FPU (none by default)
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//
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// Convert a string to uppercase
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//
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void strtoupper(char * s)
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{
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while (*s)
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*s++ &= 0xDF;
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}
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//
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// Manipulate file extension.
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//
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// 'name' must be large enough to hold any possible filename. If 'stripp' is
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// nonzero, any old extension is removed. If the file does not already have an
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// extension, 'extension' is appended to the filename.
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//
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char * fext(char * name, char * extension, int stripp)
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{
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char * s;
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// Find beginning of "real" name (strip off path)
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char * beg = strrchr(name, SLASHCHAR);
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if (beg == NULL)
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beg = name;
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// Clobber any old extension, if requested
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if (stripp)
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{
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for(s=beg; *s && *s!='.'; ++s)
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;
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*s = '\0';
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}
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if (strrchr(beg, '.') == NULL)
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strcat(beg, extension);
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return name;
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}
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//
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// Return 'item'nth element of semicolon-seperated pathnames specified in the
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// enviroment string 's'. Copy the pathname to 'buf'. Return 0 if the 'item'
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// nth path doesn't exist.
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//
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// ['item' ranges from 0 to N-1, where N = #elements in search path]
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//
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int nthpath(char * env_var, int itemno, char * buf)
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{
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char * s = searchpath;
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if (s == NULL)
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s = getenv(env_var);
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if (s == NULL)
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return 0;
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while (itemno--)
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while (*s != EOS && *s++ != ';')
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;
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if (*s == EOS)
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return 0;
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while (*s != EOS && *s != ';')
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*buf++ = *s++;
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*buf++ = EOS;
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return 1;
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}
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//
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// Display command line help
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//
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void DisplayHelp(void)
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{
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printf("Usage:\n"
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" %s [options] srcfile\n"
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"\n"
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"Options:\n"
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" -? or -h Display usage information\n"
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" -dsymbol[=value] Define symbol (with optional value, default=0)\n"
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" -e[errorfile] Send error messages to file, not stdout\n"
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" -f[format] Output object file format\n"
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" a: ALCYON (use this for ST)\n"
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" b: BSD (use this for Jaguar)\n"
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" e: ELF\n"
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" x: com/exe/xex (Atari 800)\n"
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" -i[path] Directory to search for include files\n"
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" -l[filename] Create an output listing file\n"
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" -l*[filename] Create an output listing file without pagination\n"
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" -m[cpu] Select default CPU. Available options:\n"
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" 68000\n"
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" 68020\n"
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" 68030\n"
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" 68040\n"
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" 68060\n"
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" 6502\n"
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" tom\n"
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" jerry\n"
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" -n Don't do things behind your back in RISC assembler\n"
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" -o file Output file name\n"
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" +o[value] Turn a specific optimisation on\n"
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" Available optimisation values and default settings:\n"
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" o0: Absolute long adddresses to word (on)\n"
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" o1: move.l #x,dn/an to moveq (on)\n"
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" o2: Word branches to short (on)\n"
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" o3: Outer displacement 0(an) to (an) (off)\n"
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" o4: lea size(An),An to addq #size,An (off)\n"
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" o5: Absolute long base displacement to word (off)\n"
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" o6: Null branches to NOP (off)\n"
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" o7: clr.l Dx to moveq #0,Dx (off)\n"
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" o8: adda.w/l #x,Dy to addq.w/l #x,Dy (off)\n"
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" o9: adda.w/l #x,Dy to lea x(Dy),Dy (off)\n"
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" ~o[value] Turn a specific optimisation off\n"
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" +oall Turn all optimisations on\n"
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" ~oall Turn all optimisations off\n"
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" -p Create an ST .prg (without symbols)\n"
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" -ps Create an ST .prg (with symbols)\n"
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" -px Create an ST .prg (with exsymbols)\n"
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" Forces -fa\n"
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" -r[size] Pad segments to boundary size specified\n"
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" w: word (2 bytes, default alignment)\n"
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" l: long (4 bytes)\n"
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" p: phrase (8 bytes)\n"
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" d: double phrase (16 bytes)\n"
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" q: quad phrase (32 bytes)\n"
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" -s Warn about possible short branches\n"
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" and applied optimisations\n"
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" -u Force referenced and undefined symbols global\n"
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" -v Set verbose mode\n"
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" -x Turn on debugging mode\n"
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" -y[pagelen] Set page line length (default: 61)\n"
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"\n", cmdlnexec);
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}
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//
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// Display version information
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//
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void DisplayVersion(void)
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{
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printf("\n"
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" _ __ _ __ ___ __ _ ___ \n"
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"| '__| '_ ` _ \\ / _` |/ __|\n"
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"| | | | | | | | (_| | (__ \n"
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"|_| |_| |_| |_|\\__,_|\\___|\n"
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"\nReboot's Macro Assembler\n"
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"Copyright (C) 199x Landon Dyer, 2011-2017 Reboot\n"
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"V%01i.%01i.%01i %s (%s)\n\n", MAJOR, MINOR, PATCH, __DATE__, PLATFORM);
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}
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//
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// Parse optimisation options
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//
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int ParseOptimization(char * optstring)
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{
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int onoff = 0;
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if (*optstring == '+')
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onoff = 1;
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else if (*optstring != '~')
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return ERROR;
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if ((optstring[2] == 'a' || optstring[2] == 'A')
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&& (optstring[3] == 'l' || optstring[3] == 'L')
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&& (optstring[4] == 'l' || optstring[4] == 'L'))
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{
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memset(optim_flags, onoff, OPT_COUNT * sizeof(int));
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return OK;
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}
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else if (optstring[1] == 'o' || optstring[1] == 'O') // Turn on specific optimisation
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{
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int opt_no = atoi(&optstring[2]);
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if ((opt_no >= 0) && (opt_no < OPT_COUNT))
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{
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optim_flags[opt_no] = onoff;
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return OK;
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}
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else
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return ERROR;
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}
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else
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{
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return ERROR;
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}
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}
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//
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// Process command line arguments and do an assembly
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//
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int Process(int argc, char ** argv)
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{
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int argno; // Argument number
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SYM * sy; // Pointer to a symbol record
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char * s; // String pointer
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int fd; // File descriptor
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char fnbuf[FNSIZ]; // Filename buffer
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int i; // Iterator
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errcnt = 0; // Initialise error count
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listing = 0; // Initialise listing level
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list_flag = 0; // Initialise listing flag
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verb_flag = perm_verb_flag; // Initialise verbose flag
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as68_flag = 0; // Initialise as68 kludge mode
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glob_flag = 0; // Initialise .globl flag
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sbra_flag = 0; // Initialise short branch flag
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debug = 0; // Initialise debug flag
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searchpath = NULL; // Initialise search path
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objfname = NULL; // Initialise object filename
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list_fname = NULL; // Initialise listing filename
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err_fname = NULL; // Initialise error filename
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obj_format = BSD; // Initialise object format
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firstfname = NULL; // Initialise first filename
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err_fd = ERROUT; // Initialise error file descriptor
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err_flag = 0; // Initialise error flag
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rgpu = 0; // Initialise GPU assembly flag
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rdsp = 0; // Initialise DSP assembly flag
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robjproc = 0; // Initialise OP assembly flag
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lsym_flag = 1; // Include local symbols in object file
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regbank = BANK_N; // No RISC register bank specified
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orgactive = 0; // Not in RISC org section
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orgwarning = 0; // No ORG warning issued
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segpadsize = 2; // Initialise segment padding size
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m6502 = 0; // 6502 mode off by default
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// Initialise modules
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InitSymbolTable(); // Symbol table
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InitTokenizer(); // Tokenizer
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InitLineProcessor(); // Line processor
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InitExpression(); // Expression analyzer
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InitSection(); // Section manager / code generator
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InitMark(); // Mark tape-recorder
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InitMacro(); // Macro processor
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InitListing(); // Listing generator
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Init6502(); // 6502 assembler
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// Process command line arguments and assemble source files
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for(argno=0; argno<argc; argno++)
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{
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if (*argv[argno] == '-')
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{
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switch (argv[argno][1])
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{
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case 'd': // Define symbol
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case 'D':
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for(s=argv[argno]+2; *s!=EOS;)
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{
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if (*s++ == '=')
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{
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s[-1] = EOS;
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break;
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}
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}
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if (argv[argno][2] == EOS)
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{
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printf("-d: empty symbol\n");
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errcnt++;
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return errcnt;
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}
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sy = lookup(argv[argno] + 2, 0, 0);
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if (sy == NULL)
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{
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sy = NewSymbol(argv[argno] + 2, LABEL, 0);
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sy->svalue = 0;
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}
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sy->sattr = DEFINED | EQUATED | ABS;
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sy->svalue = (*s ? (uint64_t)atoi(s) : 0);
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break;
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case 'e': // Redirect error message output
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case 'E':
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err_fname = argv[argno] + 2;
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break;
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case 'f': // -f<format>
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case 'F':
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switch (argv[argno][2])
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{
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case EOS:
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case 'a': // -fa = Alcyon [the default]
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case 'A':
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obj_format = ALCYON;
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break;
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case 'b': // -fb = BSD (Jaguar Recommended: 3 out 4 jaguars recommend it!)
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case 'B':
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obj_format = BSD;
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break;
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case 'e': // -fe = ELF
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case 'E':
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obj_format = ELF;
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break;
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case 'x': // -fx = COM/EXE/XEX
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case 'X':
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obj_format = XEX;
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break;
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default:
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printf("-f: unknown object format specified\n");
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errcnt++;
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return errcnt;
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}
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break;
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case 'g': // Debugging flag
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case 'G':
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printf("Debugging flag (-g) not yet implemented\n");
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break;
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case 'i': // Set directory search path
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case 'I':
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searchpath = argv[argno] + 2;
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break;
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case 'l': // Produce listing file
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case 'L':
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if (*(argv[argno] + 2) == '*')
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{
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list_fname = argv[argno] + 3;
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list_pag = 0; // Special case - turn off pagination
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}
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else
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{
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list_fname = argv[argno] + 2;
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}
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listing = 1;
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list_flag = 1;
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lnsave++;
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break;
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case 'm':
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case 'M':
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if (strcmp(argv[argno] + 2, "68000") == 0)
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d_68000();
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else if (strcmp(argv[argno] + 2, "68020") == 0)
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d_68020();
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else if (strcmp(argv[argno] + 2, "68030") == 0)
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d_68030();
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else if (strcmp(argv[argno] + 2, "68040") == 0)
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d_68040();
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else if (strcmp(argv[argno] + 2, "68060") == 0)
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d_68060();
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else if (strcmp(argv[argno] + 2, "68881") == 0)
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d_68881();
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else if (strcmp(argv[argno] + 2, "68882") == 0)
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d_68882();
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else if (strcmp(argv[argno] + 2, "56001") == 0)
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d_56001();
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else if (strcmp(argv[argno] + 2, "6502") == 0)
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d_6502();
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else if (strcmp(argv[argno] + 2, "tom") == 0)
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d_gpu();
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else if (strcmp(argv[argno] + 2, "jerry") == 0)
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d_dsp();
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else
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{
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printf("Unrecognized CPU '%s'\n", argv[argno] + 2);
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errcnt++;
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return errcnt;
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}
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break;
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case 'o': // Direct object file output
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case 'O':
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if (argv[argno][2] != EOS)
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objfname = argv[argno] + 2;
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else
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{
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if (++argno >= argc)
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{
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printf("Missing argument to -o");
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errcnt++;
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return errcnt;
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}
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objfname = argv[argno];
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}
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break;
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case 'p': /* -p: generate ".PRG" executable output */
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case 'P':
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/*
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* -p .PRG generation w/o symbols
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* -ps .PRG generation with symbols
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* -px .PRG generation with extended symbols
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*/
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switch (argv[argno][2])
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{
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case EOS:
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prg_flag = 1;
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break;
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case 's':
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case 'S':
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prg_flag = 2;
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break;
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case 'x':
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case 'X':
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prg_flag = 3;
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break;
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default:
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printf("-p: syntax error\n");
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errcnt++;
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return errcnt;
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}
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// Enforce Alcyon object format - kind of silly
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// to ask for .prg output without it!
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obj_format = ALCYON;
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break;
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case 'r': // Pad seg to requested boundary size
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case 'R':
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switch(argv[argno][2])
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{
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case 'w': case 'W': segpadsize = 2; break;
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case 'l': case 'L': segpadsize = 4; break;
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case 'p': case 'P': segpadsize = 8; break;
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case 'd': case 'D': segpadsize = 16; break;
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case 'q': case 'Q': segpadsize = 32; break;
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default: segpadsize = 2; break; // Effective autoeven();
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}
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break;
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case 's': // Warn about possible short branches
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case 'S':
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sbra_flag = 1;
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break;
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case 'u': // Make undefined symbols .globl
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case 'U':
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glob_flag = 1;
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break;
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case 'v': // Verbose flag
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case 'V':
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verb_flag++;
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if (verb_flag > 1)
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DisplayVersion();
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break;
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case 'x': // Turn on debugging
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case 'X':
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debug = 1;
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printf("~ Debugging ON\n");
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break;
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case 'y': // -y<pagelen>
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case 'Y':
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pagelen = atoi(argv[argno] + 2);
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if (pagelen < 10)
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{
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printf("-y: bad page length\n");
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errcnt++;
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return errcnt;
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}
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break;
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case EOS: // Input is stdin
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if (firstfname == NULL) // Kludge first filename
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firstfname = defname;
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include(0, "(stdin)");
|
|
Assemble();
|
|
break;
|
|
case 'h': // Display command line usage
|
|
case 'H':
|
|
case '?':
|
|
DisplayVersion();
|
|
DisplayHelp();
|
|
errcnt++;
|
|
break;
|
|
case 'n': // Turn off legacy mode
|
|
case 'N':
|
|
legacy_flag = 0;
|
|
printf("Legacy mode OFF\n");
|
|
break;
|
|
default:
|
|
DisplayVersion();
|
|
printf("Unknown switch: %s\n\n", argv[argno]);
|
|
DisplayHelp();
|
|
errcnt++;
|
|
break;
|
|
}
|
|
}
|
|
else if (*argv[argno] == '+' || *argv[argno] == '~')
|
|
{
|
|
if (ParseOptimization(argv[argno]) != OK)
|
|
{
|
|
DisplayVersion();
|
|
printf("Unknown switch: %s\n\n", argv[argno]);
|
|
DisplayHelp();
|
|
errcnt++;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Record first filename.
|
|
if (firstfname == NULL)
|
|
firstfname = argv[argno];
|
|
|
|
strcpy(fnbuf, argv[argno]);
|
|
fext(fnbuf, ".s", 0);
|
|
fd = open(fnbuf, 0);
|
|
|
|
if (fd < 0)
|
|
{
|
|
printf("Cannot open: %s\n", fnbuf);
|
|
errcnt++;
|
|
continue;
|
|
}
|
|
|
|
include(fd, fnbuf);
|
|
Assemble();
|
|
}
|
|
}
|
|
|
|
// Wind-up processing;
|
|
// 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();
|
|
|
|
for(i=TEXT; i<=BSS; i<<=1)
|
|
{
|
|
SwitchSection(i);
|
|
|
|
switch(segpadsize)
|
|
{
|
|
case 2: d_even(); break;
|
|
case 4: d_long(); break;
|
|
case 8: d_phrase(); break;
|
|
case 16: d_dphrase(); break;
|
|
case 32: d_qphrase(); break;
|
|
}
|
|
|
|
SaveSection();
|
|
}
|
|
|
|
SwitchSection(M6502);
|
|
|
|
if (sloc != currentorg[0])
|
|
{
|
|
currentorg[1] = sloc;
|
|
currentorg += 2;
|
|
}
|
|
|
|
if (objfname == NULL)
|
|
{
|
|
if (firstfname == NULL)
|
|
firstfname = defname;
|
|
|
|
strcpy(fnbuf, firstfname);
|
|
fext(fnbuf, (prg_flag ? ".prg" : ".o"), 1);
|
|
objfname = fnbuf;
|
|
}
|
|
|
|
// With one pass finished, go back and:
|
|
// (1) run through all the fixups and resolve forward references;
|
|
// (1.5) ensure that remaining fixups can be handled by the linker
|
|
// (`lo68' format, extended (postfix) format....)
|
|
// (2) generate the output file image and symbol table;
|
|
// (3) generate relocation information from left-over fixups.
|
|
ResolveAllFixups(); // Do all fixups
|
|
StopMark(); // Stop mark tape-recorder
|
|
|
|
if (errcnt == 0)
|
|
{
|
|
if ((fd = open(objfname, _OPEN_FLAGS, _PERM_MODE)) < 0)
|
|
cantcreat(objfname);
|
|
|
|
if (verb_flag)
|
|
{
|
|
s = (prg_flag ? "executable" : "object");
|
|
printf("[Writing %s file: %s]\n", s, objfname);
|
|
}
|
|
|
|
WriteObject(fd);
|
|
close(fd);
|
|
|
|
if (errcnt != 0)
|
|
unlink(objfname);
|
|
}
|
|
|
|
if (list_flag)
|
|
{
|
|
if (verb_flag)
|
|
printf("[Wrapping-up listing file]\n");
|
|
|
|
listing = 1;
|
|
symtable();
|
|
close(list_fd);
|
|
}
|
|
|
|
if (err_flag)
|
|
close(err_fd);
|
|
|
|
DEBUG dump_everything();
|
|
|
|
return errcnt;
|
|
}
|
|
|
|
|
|
//
|
|
// Determine processor endianess
|
|
//
|
|
int GetEndianess(void)
|
|
{
|
|
int i = 1;
|
|
char * p = (char *)&i;
|
|
|
|
if (p[0] == 1)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
//
|
|
// Application entry point
|
|
//
|
|
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;
|
|
|
|
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);
|
|
|
|
DisplayVersion();
|
|
DisplayHelp();
|
|
|
|
return 0;
|
|
}
|
|
|