Compendium Deluxe 1/LSD Compendium Deluxe 1.iso/a/programming/misc/m2_part1.lha/modula/dice/dice.LHA/version.doc

Text File | 1991-04-29 | 16.7 KB | 453 lines

    (note, this is the full version.doc file, not everything applies to
    the freeware version of DICE)


                   VERSION.DOC
                  DICE

VERS DES COMMENT
    VERS    = Release Version
    DES     = bug fixed / feature designator
    XB  - major bug fixed in main compiler
          (use of routine in question could have caused a crash)
    B   - minor bug fixed in main compiler
    F   - feature added
    E   - enhancement to existing feature
    O   - optimization added

    ADD - feature added or fixed that is standard C but was not previously
          implemented or working.

    XBL - major bug fixed to library
    BL  - minor bug fixed to library
    FL  - feature added to library
    OL  - optimization added to library

    XBA - major bug fixed in support program (i.e. not DCC or sub programs)
    BA  - minor bug fixed in support program
    FA  - feature added to support program (or new support program)
    OA  - optimization added to support program

    COMMENT = comment or bug, feature

2.06.21
    E    fixed register reallocation, should now do a better job
    allocating registers in complex subroutines.  Hopefully squashed
    'maximum retries exceeded' error for all but the most incredibly
    complex expressions.

    B    fixed bug in int->float conversion, expressions such as:
        double x = (double)(a * b);

    E    fixed somestuff that generated an infinite WARN loop.

    F    DCC now creates the destination directory heirarchy if it does
    not exist.  For example, when you DCC com/x.c the object file
    will be T:com/x.o, with T:com created if necessary.

    F    DYNAMIC FUNCTION/VAR LIBARARY SUPPORT ADDED, see __dynamic
    explanation in DYNAMIC.DOC .

    F    DCPP now accepts -Ddefine(vars..)=definition, it used to be
    able to only accept -Ddefine=value

2.06.20
    F    TimerBase, for timer.device library calls, now has auto-open
    capability, meaning that you can simply call AddTime(), CmpTime(),
    SubTime(), and the new 2.0 calls (GetSysTime() & ReadEClock())
    without having to open the timer.device and set up TimerBase
    yourself.

    B    bug in if (ptr & 1) and similar constructs doing a logical and
    in a compare against a pointer rather than an int produced
    bad code caught by DAS.

    B    x.o was in c.lib, this is wrong... x.o must be the LAST file in
    any link and is included automatically by DCC when it runs DLINK.

    F    additional example code in DCC2:examples -- a DOS handler and
    a shared library.

2.06.19
    B    bug in dynamic stack code under 1.3 fixed
    B    bug in workbench startup under 1.3 fixed
    B    bug in register allocation fixed (would cause fatal error
    message 'too many retries' sometimes when procedure args
    declared as arrays instead of pointers)

2.06.18
    F    several more libraries have auto-open capability

    B    bug in DLINK fixed -- would GURU on large links due to an error
    in the allocation routines (relocation info larger than 4K would
    cause a GURU)

2.06.17
    F    DCPP now scans DINCLUDE:PD/ for include files.    This is where I
    will be putting .H files for various ports (such as the UNIX
    regexp port).  This was done so as not to clutter the main
    DINCLUDE: and to differentiate between PD files and non-PD
    files.

    UNIX compatible .H files are usually placed in DINCLUDE: or
    DINCLUDE:SYS/

    F    preprocessor now handles #if defined(symbol) properly (was
    previously not implemented)

    F    BITFIELDS now 99% implemented!    including signed/unsigned
    qualifications.  The only thing that does not work is ++bitfield
    and --bitfield.  Single-bit bitfields have been optimized.
    aggregate initialization of bitfields is still wanting.  executable
    actually got smaller when I finally got down and fixed these up.
    No 020/030 support yet.

    F    startup code modified to allow writes to desc 0, reads from desc 1,
    etc...    at the file descriptor level but not the stdio level.  This
    is to support some UNIX programs which do this.

    BL    bug in [f]putc() fixed -- [f]putc() is supposed to return the put character,
            but did not do so in the case of a new line (putc), or
            at all (fputc).

    F    NEW LIBRARY ROUTINESE:    stat(), fstat(), getenv(), opendir(),
    readdir(), closedir(), rewinddir() (see MAN/UNIX.DOC)

    F    chdir() now restores the original directory on exit

    F    Dynamic Stacking added (-gs option).  Somewhat primitive, but will
    get much better.  This allows subroutines to be as deeply nested as
    required, allocating and deallocating stack frames when low stack
    conditions exist.

    F    longjmp()/setjmp() now properly handle dynamic stacks

    B    fixed another bug, this one having to do with the index address
    mode (An,Dn.x) combined with a binary operator.

    B    fixed bug in FDTOLIB that screwed up register ordering.

2.06.16
    B    fixed EXG bug in DAS, EXG As,Ad would generate Ds,Dd.. screwed
    up registered args (-mRR).

    B    fixed bug in *= and /= combined w/ array indexing, things like
    temp[i] /= 23; would use the scratch regs for storage across
    the divide call.

2.06.15
    F    BASIC REGISTERED ARGUMENTS ADDED.  See -mr, -mR, and -mRR options

    F    prototype optimization.  If a prototype says a procedure takes a
    short, then DICE pushes a long (as usual).  However, DICE will
    no longer EXT the object before pushing it (upper word is garbage).
    This works because the procedure, having declared the argument a
    short, will only access the lower 16 bits.

    B    fixed token pasting bug in dcpp, a ## b ## c now works properly.

    F    first registered distribution that includes the 2.0 includes,
    restructuring of 1.3 includes (now called 'amiga13' instead of
    'amiga'), and restructuring of disks to make more space.

2.05.14
    BL    fgets() would overflow the buffer by one character when input lines
    were larger than the buffer size.

    B    DCC would complain about output (-o) files ending in .h or .c when
    they do not actually end in .h or .c ..

2.05.13
    B    DCC was supplying only a 2K stack to NON-RESIDENTED sub programs.
    Oops.

    F    New floating point support for MATHIEEESING*.LIBRARY ... single
    precision IEEE library.  This is now the default since it is
    more compatible with the double precision IEEE library for
    conversions between single & double precision.

    Use the -ffp option to DCC to use the old motorola fast floating
    point single precision library.  Note that the new ieee single
    precision library may not exist on every computer.

2.05.12
    B    another bug with 'const static' items not properly aligning the
    routine they were declared in (when declared within a procedure
    definition).  Fixed.

    B    pfmt has a local 64 byte buffer which used to be static.  This is
    illegal for the ROM.LIB version of sprintf() & vsprintf() and so I
    have made this an auto instead.  This fix does not effect Amiga C
    programming though it does mean that [v]sprintf() may now be called
    out of context or multi-threaded without mishap.

    F    qsort(), rand(), and srand() have been written.

    B    volatile was not being handled proper, 'volatile char *ptr' is
    a pointer to a volatile char, NOT a volatile pointer, for
    example.

2.05.11
    F    new library, ROM.LIB, contains only those routines from C.LIB that
    are completely self contained (reference no static or global data,
    or other routines.  Use only autos if at all).

    This library is included instead of C.LIB when the -rom option
    to DCC is used (with the -rom option, amigas*.lib is not included
    either, and it is up to the programmer to specify his own startup
    module)

    F    char ary[0] and empty structs return errors, but a direct 'void'
    declaration is allowed.  i.e. 'void x;', useful in some cases.

    F    Specifying the 'register' keyword now adds some 'weight' to the
    variable, perhaps giving it more of a chance of becomming a
    register.

    B    DCPP was improperly handling token pasting (##), this has been
    fixed.

    B    static const objects declared within a procedure not word-aligned
    could cause the procedure code to not be word-aligned, thus
    causing a software error.

    F    CONST object handling has been changed.  Before 2.05.11 const
    objects were not put into a CODE hunk unless the -ms or -mS options
    are given to DCC.  2.05.11 and beyond put const qualified objects
    in a code hunk regardless.

    F    C.O Modified.  Any program run in the background with RUN will not
    attempt to Open("*",..) to get the stderr channel but instead
    will use the stdout descriptor if it exists.  This allows programs
    to be detached from a CLI (i.e. that you can run a program and
    then close the CLI window without mishap)

    F    -020, -030, -881, -882 options formally added (currently -020/-030
    are the same and -881/-882 are the same)

    -020: uses EXTB.L   (no major support has been added yet)

    B    DSEARCH had a bug... when multiple files are scanned it would miss
    lines in the second file and beyond!

    F    oops, const items in the library were not placed in the code
    section.  This effects <ctype.h> ... you must recompile any
    source files that use <ctype.h> macros since the access method
    is now pc-relative instead of data-relative.

    The fix is more pertainent to ROMd applications that use <ctype.h>
    ... the lookup tables are no longer copied into RAM for such
    applications.

2.05.10
    F    __config and __shared type qualifiers added

    B    --var; generated an internal error

2.05.09
    B    switch() did not generate proper code when default: label was not
    placed last and fell through to another case, or a case before
    the default fell through to it when default: was not placed last.

    B    comma operator bug fixed (would cause fatal internal error in
    some cases)

    B    a[i] = a[j] = a[k] ... = x; ran out of registers if too many
    assignments.  This has been fixed.

2.05.08
    B    fixed random-memory-read bug in DLink (did not effect linking, but
    would sometimes read the custom-chip area causing screen glitches
    and other mishaps). (dlink .02)

    BL    access() fixed, returns true if checking for existance on an
    object which is currently locked exclusively by somebody else.

    B    DICE would give a prototype argument mismatch warning when the
    proto says array-of and the declaration says pointer-to, when
    for function args these mean the same thing.  This has been fixed.

    B    DICE now checks for duplicate case statements

    B    error in indexed structure copies, struct foo AR[16][16];
    foo[i][j] = foo[k][l]; fixed (would give fatal error message before).

    XB    MAJOR fix to type qualifiers.. __far, __near, __chip, __aligned,
    etc... all work properly now when specified in complex objects
    (e.g. arrays)

    B    global initialization that assigns the address of an array was
    broken (would give fatal error message).  Now fixed.

    XB    bug fixed when casts of pointer constants occured,
    short = *(long *)0x0  improperly read the word at location 0, it
    should have read the word at location 2!.

    F    -ms, -mS, -ms0 options added (placement of const data), see DCC.DOC.
    THIS IS A GREAT OPTION (-ms) WHEN USED ALONG WITH -r !

    -SD -SB added to DC1 (proly not useful to anybody)

    __far declared data is now placed in a different section, allowing
    the small-data model to be used when more than 64K of data
    exists without fancy rearrangement of junk.

    F    DICE is now able to generate ROMable code via new options and
    utilities, with full support for r/w initialized data items and use
    of the absolute.W addressing mode instead of the small-data model.

    B    array of const now properly becomes a const array of const.

    B    volatile auto storage no longer put in registers (refer to setjmp
    manual page)

    O    DICE executables take somewhat less run-time memory due to
    being compiled with the -ms option, especially when multiple
    instances are running simultaniously.

    O    new options added to DOBJ (-nc and -nd to show symbols only)

    F    better code for large switches (binary subdivision method, aprox
    4x speed increase for large switches)

    B    switch() did not generate proper code when the overall switch
    range is larger than 0x7FFFFFFF (i.e. highest - lowest)


2.05.07
    F    -proto option added ... generates an error for any function call
     that does not have a prototype

    B    struct foo *y = &x[0]; where sizeof(struct foo) not a power of 2 (x
    is an array of foo) in global or static declaration would cause
    fatal error.  Fixed.

    B    Various fixes to the preprocessor

2.05.06
    ADD DAS now supports all 68000 opcodes
    B    trigraph sequences now supported (??x)
    B    minor bug in assembler that generated an infinite length object file
    (due to a specific error condition) fixed, now exits gracefully.
    F    DOBJ now part of registered distribution (object code disassembler)
    B    forgot to include DME.DOC !

    B    STDDEF.H changed, the offsetof() macro no longer prefixes the type
    with the 'struct' keyword.

    B    complex procedural types now work. e.g.
            extern void (*signal(int, void (*)(int)))(int);

    ADD cpp #line directive (supports yacc generated source files)

2.05 RELEASE (REG UPDATE #2)
    (DC1 2.05.05)
    B    small bug (caught by assembler).  int a[4];     (a-2)[c] = 0;
    would cause bad assembly to be output.

    B    now reports error for exp.field where exp is not a structure.

    (CPP 2.05.04)
    B    cpp not counting lines right (generates error reports
    specifying the wrong line number)

2.05 RELEASE DC1 2.05.04 (REG UPDATE #1)
    XB        array indexing not of a power of 2 (i.e. req's multiply)
        destroyed temporaries in scratch registered.

2.05 RELEASE (REG RELEASE)
    ADD     prototypeing works properly now.

    BL        gets would not return last line of file if last line did not
        terminate with a newline.

    BL        fgets would not return last line of file if last line did not
        terminate with a newline.  Also, fgets did not return a pointer
        to the base of the passed buffer for valid lines

    B        compiler used to allow unbalanced parenthesis... this has been
        fixed.  i.e. return(10;  reports an error as it should.

    B        bugs in the preprocessor fixed having to do with macro recursion

2.04
    XBL     strftime() did not \0 terminate the buffer in all cases

    BA        libtos() would not modify PotgoBase into the small-data model

    B        DC1 would generate lea An,An which is an illegal instruction.
        This is caught and reported by DAS.

    B        DC1 would generate a move.0 (caught by assembler) when passing
        an argument to a prototyped function using the array declaration
        form instead of a pointer form, i.e. foo(char buf[], int y, ...);

    O        MULS/MULU optimizations added (long = short * short)

    O        ptr - ptr operation: ASR now used when possible instead of a
        long divide.

    F        linker now supports qualified hunks (e.g. CHIP ram hunks, etc...)

    ADD     partially implemented # (string-ize) and ## (token pasting)
        operators in preprocessor.    Fixed a macro bug in preprocessor
        (that used to generate an error message).

    BL        [s/f]scanf() improperly included %*<spec> objects in the
        returned count.  This has been fixed.

    O        More small optimizations added that now result in at least a
        2-3% improvement in code size.  Amoung other things,
        moveq+swap used to load large integer values when possible and
        clr.l -(sp) is used instead of pea 0.W .

    XB        WORKBENCH SUPPORT FIXED.  Previously the exit code would return
        the workbench message and then proceed to make additional calls
        that could break the Forbid(), thus causing the workbench to
        unload the segment before the code has completed execution.

        _WBMsg, if non-NULL, is now returned just after a Forbid() and
        just before the final register restore/rts of the program.

    ------  REGISTERED RELEASE ($40 shareware fee) ------

    ADD     Floating point for float's and double's has been implemented
        but some deficiencies (such as not all library routines have
        been implemented) still exist.  Compile time constant fp
        operations are done in 128-bit mantissa format using a base 10
        exponent (i.e. no base conversion error factors).

    F        __near, __far, and __chip keywords have been implemented.  Note
        however that programs containing __far and __chip keywords may
        not be made resident.

    ADD     bitfields have been added and should now work in most cases.
        Comparisons of bitfields only work in the == 0 and != 0
        cases (this includes if (bitfield) and if (!bitfield)
        constructions).

        Bitfields are word aligned and packed into words (16 bits),
        though a bit field itself may be up to 32 bits in size.  Some
        optimizations have been implemented.


2.03    Internal Intermediate Version

2.02
    BL        open() was broken in 2.01, causing fopen(..., "w") to not
        truncate the file.    Dumb Dumb Dumb.

2.01
    BL        fflush() and fopen() were broken... file position was not

    XBL     Fixed var-args bug ... va_arg was not indirecting the
        quantity but returned a pointer instead.  pfmt and sfmt
        had to be changed.

2.00

    --        Initial shareware release