mit-scheme.git
13 years agoMerge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme
Taylor R Campbell [Tue, 29 Mar 2011 00:57:38 +0000 (00:57 +0000)]
Merge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme

13 years agoAdd and export GUARANTEE-PROMISE.
Joe Marshall [Mon, 28 Mar 2011 17:41:18 +0000 (10:41 -0700)]
Add and export GUARANTEE-PROMISE.

13 years agoAdd numerator->exact and denominator->exact.
Joe Marshall [Thu, 24 Mar 2011 20:48:13 +0000 (13:48 -0700)]
Add numerator->exact and denominator->exact.

13 years agoWhen signalling a file open error, read channel type before closing.
Taylor R Campbell [Wed, 23 Mar 2011 04:34:00 +0000 (04:34 +0000)]
When signalling a file open error, read channel type before closing.

13 years agoCopy example files to doc/ffi/ directory to avoid relative paths,
Chris Hanson [Sun, 20 Mar 2011 09:26:07 +0000 (02:26 -0700)]
Copy example files to doc/ffi/ directory to avoid relative paths,
which aren't working on my machine.

13 years agoBump version number and current year.
Chris Hanson [Sun, 20 Mar 2011 09:25:59 +0000 (02:25 -0700)]
Bump version number and current year.

13 years agoFor some reason, fatal_buf doesn't have a NUL under certain circumstances on my Mac...
Chris Hanson [Sun, 20 Mar 2011 09:25:38 +0000 (02:25 -0700)]
For some reason, fatal_buf doesn't have a NUL under certain circumstances on my Mac.  Instead of calling strlen, do a more careful scan that stops at the end of the buffer.

13 years agoBump version number and current year.
Chris Hanson [Sun, 20 Mar 2011 05:59:34 +0000 (22:59 -0700)]
Bump version number and current year.

13 years agoUpdate copyright dates in reference headers.
Chris Hanson [Sun, 20 Mar 2011 05:57:05 +0000 (22:57 -0700)]
Update copyright dates in reference headers.

13 years agoAdd GUARANTEEs for positive, negative, non-positive, and non-negative numbers.
Joe Marshall [Wed, 9 Mar 2011 18:27:42 +0000 (10:27 -0800)]
Add GUARANTEEs for positive, negative, non-positive, and non-negative numbers.

13 years agoMerge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme
Taylor R Campbell [Sat, 26 Feb 2011 15:13:02 +0000 (15:13 +0000)]
Merge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme

13 years agoExport some predicates.
Joe Marshall [Fri, 25 Feb 2011 20:58:30 +0000 (12:58 -0800)]
Export some predicates.

13 years agoFix typo in `mail-relay-service' documentation string.
Taylor R Campbell [Thu, 17 Feb 2011 20:51:56 +0000 (20:51 +0000)]
Fix typo in `mail-relay-service' documentation string.

13 years agoNew (Unix) primitive CHANNEL-FILE-ATTRIBUTES for fstat.
Taylor R Campbell [Mon, 14 Feb 2011 18:51:08 +0000 (18:51 +0000)]
New (Unix) primitive CHANNEL-FILE-ATTRIBUTES for fstat.

Also, I meant `eastern hemisphere' in the previous commit, unless the
earth's magnetic field has just reversed again...no, wait...

13 years agoFix ENCODE-TIME to correctly handle negative time zones.
Taylor R Campbell [Mon, 14 Feb 2011 17:39:45 +0000 (17:39 +0000)]
Fix ENCODE-TIME to correctly handle negative time zones.

This bug has been lying here for fifteen years.  Obviously we need
more MIT Scheme hackers in the western hemisphere...

All this time and date code desperately needs a lot of automatic
tests, too.

13 years agoBump microcode version number.
Taylor R Campbell [Tue, 8 Feb 2011 01:19:01 +0000 (01:19 +0000)]
Bump microcode version number.

New primitive NANOTIME-SINCE-UTC-EPOCH, and a bajillion others.

13 years agoNew primitive NANOTIME-SINCE-UTC-EPOCH.
Taylor R Campbell [Mon, 7 Feb 2011 21:49:52 +0000 (21:49 +0000)]
New primitive NANOTIME-SINCE-UTC-EPOCH.

This returns the number of seconds, with at most nanosecond
resolution, that have elapsed since the start of 1972 in UTC.
Representation is fixed-point, stored in a pair given as input.

See the comments in uxenv.c for more details.

13 years agoTwo minor cosmetic changes to runtime/wttree.scm.
Taylor R Campbell [Mon, 24 Jan 2011 14:43:42 +0000 (14:43 +0000)]
Two minor cosmetic changes to runtime/wttree.scm.

13 years agoFix wt-tree balancing. Add some trivial tests.
Taylor R Campbell [Mon, 24 Jan 2011 14:26:36 +0000 (14:26 +0000)]
Fix wt-tree balancing.  Add some trivial tests.

Thanks to Yoichi Hirai and Kazuhiko Yamamoto for analyzing the nature
of the bug and finding a good fix.

The trivial tests are enough to catch trivial errors, and one
manifestation of the balancing bug, but they should be replaced by a
more comprehensive test suite later.

13 years agoCheck URI record arguments more carefully in ->MUMBLE-URI.
Taylor R Campbell [Sat, 15 Jan 2011 04:36:39 +0000 (04:36 +0000)]
Check URI record arguments more carefully in ->MUMBLE-URI.

->ABSOLUTE-URI would formerly accept URI records representing
relative references, even though it would reject their string
representations.  Now it rejects both.

13 years agoLook in /usr/local/share/info for Info files in Edwin by default.
Taylor R Campbell [Tue, 4 Jan 2011 03:35:38 +0000 (03:35 +0000)]
Look in /usr/local/share/info for Info files in Edwin by default.

This is where the doc/ makefile actually installs them by default.

14 years agoMerge branch 'master' of git.sv.gnu.org:/srv/git/mit-scheme
Chris Hanson [Fri, 24 Dec 2010 04:57:35 +0000 (20:57 -0800)]
Merge branch 'master' of git.sv.gnu.org:/srv/git/mit-scheme

14 years agoFix floenv issues with MacOSX.
Chris Hanson [Fri, 24 Dec 2010 04:37:31 +0000 (20:37 -0800)]
Fix floenv issues with MacOSX.

14 years agoFFI support for 64bit architectures.
Matt Birkholz [Tue, 21 Dec 2010 17:28:03 +0000 (10:28 -0700)]
FFI support for 64bit architectures.

* src/ffi/generator.scm: Declare long callback IDs, large enough to
avoid truncation warnings when the toolkit type is also large.  Use
%ld instead of %d for sizeof and member offsets, and cast them to
long.  On x86_64, these have types ulong and long respectively.

* src/microcode/: pruxffi.c, pruxffi.h: (callback_run_kernel)
(callback_run_handler): Declare long callback_id params.  Use %ld.

* src/runtime/ffi.scm (radix): Parameterize alien operations to
support 64bit or 32bit addresses.

14 years agoFix tag table entry for flonum for 64-bit platforms.
Joe Marshall [Sat, 18 Dec 2010 01:32:08 +0000 (17:32 -0800)]
Fix tag table entry for flonum for 64-bit platforms.

14 years agoFix copying of ACCESS.
Joe Marshall [Fri, 17 Dec 2010 23:31:36 +0000 (15:31 -0800)]
Fix copying of ACCESS.

14 years agoFix STRIP-SUBJECT-RE on "Re: ".
Taylor R Campbell [Fri, 10 Dec 2010 06:46:35 +0000 (06:46 +0000)]
Fix STRIP-SUBJECT-RE on "Re: ".

14 years agoFix datime.scm's time formats to accept up to 61 seconds in a minute.
Taylor R Campbell [Tue, 7 Dec 2010 23:37:59 +0000 (23:37 +0000)]
Fix datime.scm's time formats to accept up to 61 seconds in a minute.

Minutes in any UTC-based time system, which covers every system of
which representations are parsed in datime.scm, can have 59, 60, or
61 seconds; previously we refused to parse representations of the
61st second.

Unfortunately, our notion of `universal time' is still essentially
Common Lisp's ill-specified notion of universal time, and implemented
by POSIX's mind-bogglingly brain-damaged notion of `number of seconds
since the Epoch' which actually means `number of seconds since the
Epoch, minus the number of them that were leap seconds in UTC'.

14 years agoFix silly thinko in definition of STRIP-SUBJECT-RE.
Taylor R Campbell [Tue, 30 Nov 2010 19:16:08 +0000 (19:16 +0000)]
Fix silly thinko in definition of STRIP-SUBJECT-RE.

Also omit needless unsafe fixnum specialization.

14 years agoHandle EINTR from opendir.
Taylor R Campbell [Wed, 24 Nov 2010 18:29:14 +0000 (18:29 +0000)]
Handle EINTR from opendir.

14 years agoFix comment about euclidean division -- r may be zero.
Taylor R Campbell [Fri, 19 Nov 2010 18:54:11 +0000 (18:54 +0000)]
Fix comment about euclidean division -- r may be zero.

14 years agoWork around bug in glibc's fegetenv on amd64.
Taylor R Campbell [Fri, 19 Nov 2010 07:24:54 +0000 (07:24 +0000)]
Work around bug in glibc's fegetenv on amd64.

14 years agoMerge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme
Taylor R Campbell [Fri, 19 Nov 2010 06:49:07 +0000 (06:49 +0000)]
Merge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme

14 years agoReplace `masking exceptions' by `trapping exceptions'.
Taylor R Campbell [Fri, 19 Nov 2010 06:10:27 +0000 (06:10 +0000)]
Replace `masking exceptions' by `trapping exceptions'.

Reversing the sense makes it clearer -- `trap on division by zero' is
a positive request, versus `mask division by zero traps', i.e. `don't
trap on division by zero'.  This better reflects the IEEE 754 notion
of actions to take on exceptions.  Also, the sense of `mask' is often
confusing (Scheme's `interrupt mask' is not the interrupts that are
masked, but the bit mask of interrupts that are *enabled*; the BSD
fpgetmask and fpsetmask library routines control the bit mask of
floating-point exceptions for which trapping is enabled; but, on the
other hand, a POSIX process's `signal mask' is the set of signals
that are disabled).

14 years agoImplement a complete set of integer division operator pairs.
Taylor R Campbell [Fri, 19 Nov 2010 05:02:58 +0000 (05:02 +0000)]
Implement a complete set of integer division operator pairs.

Given a numerator n and a denominator d, each operator pair computes
an integral quotient q and the induced remainder r = n - d q such
that |r| < |d|.  There are five pairs: ceiling, euclidean, floor,
round, and truncate.  Ceiling, floor, round, and truncate compute the
rounded quotient as their names suggest.  Euclidean division is floor
division for positive denominators, and ceiling division for negative
denominators, so that it exhibits the stronger property 0 <= r < |d|.

14 years agoFix example code in "Type and range checking".
Matt Birkholz [Fri, 12 Nov 2010 21:30:57 +0000 (14:30 -0700)]
Fix example code in "Type and range checking".

14 years agoCreate lib/lib symlinks in microcode/configure.
Matt Birkholz [Fri, 12 Nov 2010 21:18:15 +0000 (14:18 -0700)]
Create lib/lib symlinks in microcode/configure.

* src/Setup.sh, src/microcode/configure.ac: Create the src/lib/lib/
symlinks in microcode/configure, which has the list of enabled
modules.

14 years agoFixed src/README.txt. Portable C Installation instructions.
Matt Birkholz [Fri, 12 Nov 2010 21:16:11 +0000 (14:16 -0700)]
Fixed src/README.txt.  Portable C Installation instructions.

* doc/user-manual/user.texinfo: Added node "Portable C Installation".
Added "Type and range checking" describing the no-type-checks and
no-range-checks declarations.

* src/README.txt: Added a preface for the newbie that runs across this
file in a binary distribution.  Removed "CVS".  Added "portable C
distribution" and "MIT_SCHEME_EXE".  Removed mention of "bin/" in
binary distributions, and "SCHEME_LARGE" and "SCHEME_COMPILER"
variables in build scripts; these are no longer used.  Replaced
"system" with "program" or "build tree" or whatnot, reserving "system"
for the thing that runs the "operating system".  Punted sections
"Building from source... ```The Hard Way''" and "... Tabula Rasa''",
which were mostly about re-compiling / re-linking the microcode.  The
solution to such problems is now automated by the compile-microcode
step in the Unix installation instructions.

14 years agoMake BSD feraiseexcept actually raise the exception.
Taylor R Campbell [Tue, 2 Nov 2010 01:42:15 +0000 (01:42 +0000)]
Make BSD feraiseexcept actually raise the exception.

Forcing a floating-point operation by storing the (double) sum of
two volatile variables in a volatile variable is pretty kludgey,
but it works.

14 years agoReplace FPE_RESET_TRAPS by generic clear_float_exceptions.
Taylor R Campbell [Tue, 2 Nov 2010 01:41:18 +0000 (01:41 +0000)]
Replace FPE_RESET_TRAPS by generic clear_float_exceptions.

14 years agoMore fixes to floenv.h.
Taylor R Campbell [Mon, 1 Nov 2010 06:56:06 +0000 (06:56 +0000)]
More fixes to floenv.h.

14 years agoVarious fixes to floenv.h's emulation of fenv.h in terms of ieeefp.h.
Taylor R Campbell [Mon, 1 Nov 2010 06:34:36 +0000 (06:34 +0000)]
Various fixes to floenv.h's emulation of fenv.h in terms of ieeefp.h.

Still kinda broken.  More to come.

14 years agoFix name of UPDATE-FLOAT-ENVIRONMENT primitive's C procedure.
Taylor R Campbell [Mon, 1 Nov 2010 06:33:58 +0000 (06:33 +0000)]
Fix name of UPDATE-FLOAT-ENVIRONMENT primitive's C procedure.

14 years agoCheck more carefully for fenv_t and fexcept_t.
Taylor R Campbell [Mon, 1 Nov 2010 06:33:38 +0000 (06:33 +0000)]
Check more carefully for fenv_t and fexcept_t.

14 years agoCheck for the C99 fenv operations in microcode/configure.
Taylor R Campbell [Mon, 1 Nov 2010 05:18:42 +0000 (05:18 +0000)]
Check for the C99 fenv operations in microcode/configure.

14 years agoFix typo.
Taylor R Campbell [Mon, 1 Nov 2010 05:10:56 +0000 (05:10 +0000)]
Fix typo.

14 years agoCheck for fenv_t and fexcept_t in microcode/configure.
Taylor R Campbell [Mon, 1 Nov 2010 05:03:59 +0000 (05:03 +0000)]
Check for fenv_t and fexcept_t in microcode/configure.

14 years agoImplement support for a floating-point environment.
Taylor R Campbell [Mon, 1 Nov 2010 04:37:31 +0000 (04:37 +0000)]
Implement support for a floating-point environment.

14 years agoAdded c-cast, struct member peeks, param syntax checking.
Matt Birkholz [Sun, 31 Oct 2010 00:05:05 +0000 (17:05 -0700)]
Added c-cast, struct member peeks, param syntax checking.

* src/ffi/cdecls.scm (valid-param): Check that the param name does not
contain `-', nor any other non-C identifier chars.  These names go
into the generated .c files.

* src/ffi/syntax.scm (expand-peek): Allow peeks at struct members to
create or set an alien, just as peeking an array member does already.

* src/ffi/ffi.scm (c-cast): New.  Basically set-%alien/ctype! with a
convenient return value.

(alien/address, copy-alien-address!, alien-null?, alien-null!, alien=?):
Declare these as integrable operators, not via define-integrable.
Their arguments are referenced multiple times.

* src/runtime/runtime.pkg (runtime ffi): Export c-cast to ().

14 years agoMinor robustness improvement to microcode/makegen/makeinit.sh.
Taylor R Campbell [Fri, 29 Oct 2010 06:01:08 +0000 (06:01 +0000)]
Minor robustness improvement to microcode/makegen/makeinit.sh.

Don't clean up on SIGQUIT.

Use the wretched ${@:+"${@}"} idiom for APPLY.

14 years agoConvert INTERRUPTABLE_EXTENT to use `do { ... } while (0)'.
Taylor R Campbell [Fri, 29 Oct 2010 05:57:41 +0000 (05:57 +0000)]
Convert INTERRUPTABLE_EXTENT to use `do { ... } while (0)'.

14 years agoOmit procedure arity check in HASH-TABLE/MODIFY!.
Taylor R Campbell [Sun, 24 Oct 2010 06:27:02 +0000 (06:27 +0000)]
Omit procedure arity check in HASH-TABLE/MODIFY!.

This causes problems in the cold load, and doesn't enhance the safety
of the relevant code.  It only marginally increases the debuggability
of the mistake it catches.

14 years agoMake #@n always read as a quotation of the nth hashed object.
Taylor R Campbell [Sun, 24 Oct 2010 06:16:33 +0000 (06:16 +0000)]
Make #@n always read as a quotation of the nth hashed object.

Previously, #@n sometimes read as the nth hashed object, and
sometimes read as a quotation of it.  The advantage of the old
behaviour is that non-scode objects could be mentioned inside
quotations with #@n.  Personally, most of the time I referred to
non-scode objects inside quotations with #@n was as '#@n to work
around the problems this fixes:

(lambda (x) x)
;Value 12: #[compound-procedure 12]

(#@12 0)
;The object #[compound-procedure 12], passed as an argument to make-combination, is not an operator expression.

(list 1 2 3)
;Value 18: (1 2 3)

(pp #@18)
;The object 1 is not applicable.

14 years agoKludge to fix pct-encoding of authority part of IMAP URLs in IMAIL.
Taylor R Campbell [Sun, 24 Oct 2010 01:21:02 +0000 (01:21 +0000)]
Kludge to fix pct-encoding of authority part of IMAP URLs in IMAIL.

14 years agoFix FLUID-LET of ACCESS.
Taylor R Campbell [Sun, 17 Oct 2010 20:33:23 +0000 (20:33 +0000)]
Fix FLUID-LET of ACCESS.

14 years agoAdd previously omitted SRFI 33 operation TEST-BIT-FIELD?.
Taylor R Campbell [Sun, 17 Oct 2010 20:32:28 +0000 (20:32 +0000)]
Add previously omitted SRFI 33 operation TEST-BIT-FIELD?.

14 years agoNew operations on the two's-complement representation of integers.
Taylor R Campbell [Sun, 17 Oct 2010 20:00:34 +0000 (20:00 +0000)]
New operations on the two's-complement representation of integers.

These include the SRFI 33 operations, as well as some other useful
operations.

Although these are implemented as primitives with native definitions
for bignums, the primitives are not yet open-coded for the fixnum
case.  Eventually they should be open-coded, so that you don't need
to make a choice between safe code using the integer operations and
fast code using FIX:AND, FIX:LSH, &c.  Some operations are easy to
open-code for the fixnum case, such as all the bitwise operations.
Others are not so easy, such as SHIFT-LEFT, and it would be better to
open-code common aggregate operations such as EXTRACT-BIT-FIELD for
the fixnum case.  In any case, at least we now have names for the
safe operations.

14 years agoBack out i386 rewriting rule to optimize OBJECT->FIXNUM operands.
Taylor R Campbell [Sun, 17 Oct 2010 02:01:19 +0000 (02:01 +0000)]
Back out i386 rewriting rule to optimize OBJECT->FIXNUM operands.

This causes conpar.scm, for example, to be miscompiled.

14 years agoNuke old Unix-specific I/O selection primitives.
Taylor R Campbell [Sun, 17 Oct 2010 01:43:56 +0000 (01:43 +0000)]
Nuke old Unix-specific I/O selection primitives.

These have been unused for a decade and broken for half that.

14 years agoSimplify and fix X-DISPLAY-PROCESS-EVENTS primitive.
Taylor R Campbell [Sat, 16 Oct 2010 06:13:43 +0000 (06:13 +0000)]
Simplify and fix X-DISPLAY-PROCESS-EVENTS primitive.

This primitive no longer supports options for blocking vs
non-blocking or selecting vs not selecting; these are now the
responsibility of the caller.

The cached event trick previously used the value of the
uninitialized variable `event', rather than the event that was
cached.  Now it correctly uses the event that was cached.

14 years agoFix and simplify recent change to xterm_dump_rectangle.
Taylor R Campbell [Fri, 15 Oct 2010 03:28:33 +0000 (03:28 +0000)]
Fix and simplify recent change to xterm_dump_rectangle.

14 years agoFinish fix in last change to entity unparsers.
Taylor R Campbell [Thu, 14 Oct 2010 05:32:03 +0000 (05:32 +0000)]
Finish fix in last change to entity unparsers.

14 years agoFix bug in recent change to entity unparsers.
Taylor R Campbell [Thu, 14 Oct 2010 05:17:20 +0000 (05:17 +0000)]
Fix bug in recent change to entity unparsers.

14 years agoFix uninitialized reference in xterm_dump_rectangle.
Taylor R Campbell [Thu, 14 Oct 2010 04:59:39 +0000 (04:59 +0000)]
Fix uninitialized reference in xterm_dump_rectangle.

14 years agoImplement user-defined unparser methods for entities.
Taylor R Campbell [Thu, 14 Oct 2010 04:50:52 +0000 (04:50 +0000)]
Implement user-defined unparser methods for entities.

New DEFINE-STRUCTURE option PRINT-ENTITY-PROCEDURE is like
PRINT-PROCEDURE, except that the second argument to the procedure
is not a structure instance itself but an entity whose extra is a
structure instance.

New procedure SET-RECORD-TYPE-ENTITY-UNPARSER-METHOD! is like
SET-RECORD-TYPE-UNPARSER-METHOD! with the same difference.

New optional argument to MAKE-RECORD-TYPE specifies an entity
unparser method.

Existing code should be unaffected by the changes, including
existing compiled code that used DEFINE-STRUCTURE.

14 years agoMake the debugger robust to errors while printing.
Taylor R Campbell [Thu, 14 Oct 2010 04:42:21 +0000 (04:42 +0000)]
Make the debugger robust to errors while printing.

14 years agoFix some signedness issues in the X11 primitives.
Taylor R Campbell [Thu, 14 Oct 2010 03:02:18 +0000 (03:02 +0000)]
Fix some signedness issues in the X11 primitives.

Times are always unsigned; reflect this.

Screen coordinates are signed, and not always nonnegative; project
negative ones onto the border.  Widths and heights are technically
signed too, according to my Xlib.h, but I haven't observed negative
values, and negative values can't possibly make sense, whereas I have
observed negative coordinates in the wild (button down in-window,
button up out-of-window).

14 years agoFix harmless typo in recent change to cache IMAIL message properties.
Taylor R Campbell [Tue, 12 Oct 2010 02:31:58 +0000 (02:31 +0000)]
Fix harmless typo in recent change to cache IMAIL message properties.

14 years agoRefuse to signal a subprocess that has terminated.
Taylor R Campbell [Mon, 11 Oct 2010 02:47:43 +0000 (02:47 +0000)]
Refuse to signal a subprocess that has terminated.

Once Scheme has called wait*(2) on a process that has terminated, its
pid may be recycled, so attempting to send a signal to it may cause a
signal to be sent to some random process!

New tests for subprocess support include a regression test for this.

14 years agoBack out accidentally committed changes to i386.m4 fenv routines.
Taylor R Campbell [Fri, 8 Oct 2010 04:48:27 +0000 (04:48 +0000)]
Back out accidentally committed changes to i386.m4 fenv routines.

14 years agoFix recent change to FLUID-LET to support unassigning.
Taylor R Campbell [Fri, 8 Oct 2010 04:13:46 +0000 (04:13 +0000)]
Fix recent change to FLUID-LET to support unassigning.

Fixes

(define x 0)
(fluid-let ((x)) ...)
;The object (), passed as an argument to safe-car, is not a pair.

14 years agoAdd hook in dynamically loaded modules for unloading actions.
Taylor R Campbell [Thu, 7 Oct 2010 15:26:15 +0000 (15:26 +0000)]
Add hook in dynamically loaded modules for unloading actions.

Dynamically loaded modules can't use reload cleanups, because they
may be unloaded by pruxdld's reload cleanup before their reload
cleanups get to run, causing DISK-RESTORE to attempt to execute
unmapped code.  Instead, pruxdld will now call dload_finalize_file
if it is defined in the file.

Use this mechanism in prx11.  Fixes DISK-RESTORE after launching
and exiting Edwin.  (Does not fix DISK-RESTORE of an image that was
saved while Edwin was running.  That is much harder.)

14 years agoFix comments in i386.m4 and x86-64.m4 about executable stack.
Taylor R Campbell [Thu, 7 Oct 2010 05:59:36 +0000 (05:59 +0000)]
Fix comments in i386.m4 and x86-64.m4 about executable stack.

14 years agoFix recent change to SHALLOW-FLUID-BIND.
Taylor R Campbell [Thu, 7 Oct 2010 05:47:30 +0000 (05:47 +0000)]
Fix recent change to SHALLOW-FLUID-BIND.

This works around lossage with unassigned variables:

   (define x)
   (fluid-let ((x 0)) ...)
   ;Unassigned variable: x

This relies on the deprecated semantics of SET! that returns the
variable's old value (or old reference trap, if unassigned).

14 years agoFix PC-in-builtin detection.
Taylor R Campbell [Thu, 7 Oct 2010 02:33:06 +0000 (02:33 +0000)]
Fix PC-in-builtin detection.

n_builtins must be incremented if it is ever to exceed 0...

14 years agoMinor hack to revive the 6.001 REPL.
Taylor R Campbell [Thu, 7 Oct 2010 00:42:26 +0000 (00:42 +0000)]
Minor hack to revive the 6.001 REPL.

14 years agoCache parsed date, subject, author, and recipient in memory in IMAIL.
Taylor R Campbell [Thu, 7 Oct 2010 00:36:52 +0000 (00:36 +0000)]
Cache parsed date, subject, author, and recipient in memory in IMAIL.

This is not really the right thing, but it substantially speeds up
sorting, and slightly speeds up summarization, without requiring the
memory overhead of keeping whole headers strongly in memory.

What IMAIL should really do is

(1) store headers (and bodies and body structures and so on) strongly
in memory, and use a secondary GC daemon to discard them when space is
short; and

(2) use a generic, compact, on-disk cache, for every folder, of the
important information for each message: date, subject, author,
recipient, message-id, thread-id.

14 years agoDon't invoke B-M for one-character patterns in SUBSTRING-SEARCH-ALL.
Taylor R Campbell [Thu, 7 Oct 2010 00:33:50 +0000 (00:33 +0000)]
Don't invoke B-M for one-character patterns in SUBSTRING-SEARCH-ALL.

14 years agoMerge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme
Taylor R Campbell [Wed, 6 Oct 2010 04:57:39 +0000 (04:57 +0000)]
Merge branch 'master' of ssh://git.sv.gnu.org/srv/git/mit-scheme

14 years agoChange URI abstraction to handle percent encoding in the authority.
Chris Hanson [Thu, 30 Sep 2010 10:13:36 +0000 (03:13 -0700)]
Change URI abstraction to handle percent encoding in the authority.
Change terminology slightly to match RFC.

14 years agoApply patch from Eric Christopherson to allow calling mit-scheme.app/Contents/Resourc...
Chris Hanson [Thu, 30 Sep 2010 09:20:15 +0000 (02:20 -0700)]
Apply patch from Eric Christopherson to allow calling mit-scheme.app/Contents/Resources/mit-scheme from command line.

14 years agoSimplify idiom for implementing dynamic binding.
Taylor R Campbell [Mon, 13 Sep 2010 15:34:17 +0000 (15:34 +0000)]
Simplify idiom for implementing dynamic binding.

14 years agoNew macro BEGIN0.
Taylor R Campbell [Mon, 13 Sep 2010 15:28:31 +0000 (15:28 +0000)]
New macro BEGIN0.

(BEGIN0 <expression> <command> ...) evaluates <expression>, executes
<command> ..., and then returns the value of <expression>.

(Cf. Common Lisp's PROG1.)

14 years agoMoved declaration inside a block in order to conform to C89.
Arthur A. Gleckler [Thu, 9 Sep 2010 06:15:43 +0000 (23:15 -0700)]
Moved declaration inside a block in order to conform to C89.
(Thanks to Taylor for pointing out the need for this.)

14 years agoUse <error_unimplemented_primitive> in case uint64 is not available.
Arthur A. Gleckler [Tue, 7 Sep 2010 15:03:28 +0000 (08:03 -0700)]
Use <error_unimplemented_primitive> in case uint64 is not available.

14 years agoConditionalized compilation of the flonum casting primitives.
Arthur A. Gleckler [Tue, 7 Sep 2010 05:57:30 +0000 (22:57 -0700)]
Conditionalized compilation of the flonum casting primitives.
The primitives `cast-ieee754-double-to-integer' and
`cast-integer-to-ieee754-double' are omitted when the type
<uint64_t> is not available.

14 years agoAdded <AC_INT64_T> and <AC_UINT64_T> to "configure.ac". The latter is
Arthur A. Gleckler [Mon, 6 Sep 2010 05:32:55 +0000 (22:32 -0700)]
Added <AC_INT64_T> and <AC_UINT64_T> to "configure.ac".  The latter is
now required by "flonum.c" because of the new primitives I added, and
CPH asked me to include the former, too.

14 years agoShrink hashtb.{bin,com,bci} further with judicious use of syntax.
Taylor R Campbell [Sun, 5 Sep 2010 18:57:11 +0000 (18:57 +0000)]
Shrink hashtb.{bin,com,bci} further with judicious use of syntax.

14 years agoWork around bug that makes DECLARE and SYNTAX-RULES not mix.
Taylor R Campbell [Sun, 5 Sep 2010 18:23:04 +0000 (18:23 +0000)]
Work around bug that makes DECLARE and SYNTAX-RULES not mix.

14 years agoFix total botch of last commit.
Taylor R Campbell [Sun, 5 Sep 2010 05:04:47 +0000 (05:04 +0000)]
Fix total botch of last commit.

Make the GC cleverer about reallocating the ephemeron array, in order
to avoid potentially quadratic-time behaviour in MAKE-EPHEMERON and
fasloading files with ephemerons in them.

Now fasls and bands with ephemerons in them should really work, this
time with feeling...

14 years agoNew fasl version to support ephemerons.
Taylor R Campbell [Sat, 4 Sep 2010 05:10:17 +0000 (05:10 +0000)]
New fasl version to support ephemerons.

In the process, complete the transition to the STACK_END fasl format.

In the EPHEMERON fasl format, the fasl header has an extra field for
the number of ephemerons stored in the fasl, for which the fasloader
reserves space in ephemeron_array.

The fasdumper chooses between the C_CODE, STACK_END, or EPHEMERON
fasl format for maximum compatibility:

- If there are any ephemerons in the fasl, the fasdumper chooses the
  EPHEMERON format.  Older microcodes don't know about ephemerons and
  thus can't handle such fasls anyway.

- If dumping a band, the fasdumper chooses the STACK_END format,
  since the only differences between the C_CODE format and the
  STACK_END format matter only for bands.  Support for reading the
  STACK_END format was added in version 15 of the microcode; any
  newly created bands are not likely to be used in older microcodes
  than that anyway.

- Otherwise, the fasdumper chooses the C_CODE format, like before.

14 years agoRemoved NaN tests because they cause traps on Linux. (It turns out
Arthur A. Gleckler [Fri, 3 Sep 2010 03:57:08 +0000 (20:57 -0700)]
Removed NaN tests because they cause traps on Linux.  (It turns out
that they are supposed to on OS X, too, but a bug prevents that).
Taylor is considering adding support for controlling the
floating-point exception mask and flags, in which case we'll be able
to manipulate NaN values and I can add these tests back.

14 years agoAdded tests for infinities.
Arthur A. Gleckler [Thu, 2 Sep 2010 06:56:41 +0000 (23:56 -0700)]
Added tests for infinities.

14 years agoFixed typo in comments.
Arthur A. Gleckler [Thu, 2 Sep 2010 05:57:36 +0000 (22:57 -0700)]
Fixed typo in comments.

14 years agoAdded trivial tests for conversion to floating-point infinities by
Arthur A. Gleckler [Thu, 2 Sep 2010 05:43:46 +0000 (22:43 -0700)]
Added trivial tests for conversion to floating-point infinities by
`cast-integer-to-ieee754-single' and `cast-integer-to-ieee754-double'.

14 years agoFixed code formatting.
Arthur A. Gleckler [Thu, 2 Sep 2010 05:29:34 +0000 (22:29 -0700)]
Fixed code formatting.

14 years ago* Renamed `cast-flonum-to-integer' to `cast-ieee754-double-to-integer'.
Arthur A. Gleckler [Thu, 2 Sep 2010 05:23:39 +0000 (22:23 -0700)]
* Renamed `cast-flonum-to-integer' to `cast-ieee754-double-to-integer'.

* Renamed `cast-integer-to-flonum' to `cast-integer-to-ieee754-double'.

* Changed both to use <uint64_t> instead of <unsigned long> for
conversion.  That way, they should work on 32-bit systems.  (Thanks to
Taylor for pointing out that bug.)

* Added `cast-ieee754-single-to-integer' and `cast-integer-to-ieee754-single'.

* Updated existing tests.

* Added tests for casts to and from single-precision floating-point numbers.

14 years agoRemoved the divisions by zero that I had used to create floating-point
Arthur A. Gleckler [Thu, 2 Sep 2010 03:48:14 +0000 (20:48 -0700)]
Removed the divisions by zero that I had used to create floating-point
infinities since those are supposed to trap, not actually return
infinities.  On OS X, the trap doesn't happen, but I shouldn't depend
on a bug.

14 years agoMerge branch 'master' of git://git.savannah.gnu.org/mit-scheme
Arthur A. Gleckler [Wed, 1 Sep 2010 04:17:30 +0000 (21:17 -0700)]
Merge branch 'master' of git://git.savannah.gnu.org/mit-scheme

14 years agoAdded primitives `cast-flonum-to-integer' and `cast-integer-to-flonum'
Arthur A. Gleckler [Wed, 1 Sep 2010 04:16:03 +0000 (21:16 -0700)]
Added primitives `cast-flonum-to-integer' and `cast-integer-to-flonum'
and tests.