mit-scheme.git
34 years agoSupply missing case in unassigned variable trap.
Chris Hanson [Sat, 23 Mar 1991 01:17:36 +0000 (01:17 +0000)]
Supply missing case in unassigned variable trap.

34 years agoMove cache flushing code out of the 68040 region since it is needed
Guillermo J. Rozas [Fri, 22 Mar 1991 06:28:50 +0000 (06:28 +0000)]
Move cache flushing code out of the 68040 region since it is needed
even when using the 68020 format.

34 years agoMove NOP macro from cmpint.c to cmpgc.h since it is also needed
Guillermo J. Rozas [Fri, 22 Mar 1991 06:27:54 +0000 (06:27 +0000)]
Move NOP macro from cmpint.c to cmpgc.h since it is also needed
elsewhere.

34 years agoMake it compile under HP-UX when
Guillermo J. Rozas [Fri, 22 Mar 1991 04:36:00 +0000 (04:36 +0000)]
Make it compile under HP-UX when
(COMPILER_PROCESSOR_TYPE == COMPILER_MC68040_TYPE).

34 years agoInitial revision
Arthur Gleckler [Fri, 22 Mar 1991 02:03:36 +0000 (02:03 +0000)]
Initial revision

34 years ago* Each group object now has a unique associated buffer, and vice
Chris Hanson [Fri, 22 Mar 1991 00:33:14 +0000 (00:33 +0000)]
* Each group object now has a unique associated buffer, and vice
  versa.  This allows low-level group operations to access
  buffer-local variables associated with the group, such as
  `tab-width'.  New procedures: `group-buffer', `mark-buffer', and
  `group-tab-width'.

* Handling of `truncate-lines' and `tab-width' buffer-local variables
  is fixed.

* Extensive rewriting of redisplay, screen, and image code to squeeze
  a little more performance from it.

* Eliminate truncating buffer output ports, because they were unused,
  and depended on a feature that is no longer viable.

* Code to read files into buffers is redesigned.  Previously it read
  the file into a string, and then inserted the string into the
  buffer.  Now it reads the file directly into the buffer.

* Fix representation of characters in the range 200 to 377 octal.
  Their images are now four-character octal sequences; previously the
  images were the characters themselves.

34 years agoAdd new procedure `extract-and-delete-string', which combines
Chris Hanson [Fri, 22 Mar 1991 00:27:48 +0000 (00:27 +0000)]
Add new procedure `extract-and-delete-string', which combines
`extract-string' and `delete-string' into a single operation.

34 years agoSlight tweak of `group-extract-string' to improve performance.
Chris Hanson [Fri, 22 Mar 1991 00:24:02 +0000 (00:24 +0000)]
Slight tweak of `group-extract-string' to improve performance.

34 years agoEliminate commented-out printing commands. These will be rewritten
Chris Hanson [Fri, 22 Mar 1991 00:21:51 +0000 (00:21 +0000)]
Eliminate commented-out printing commands.  These will be rewritten
later.

34 years agoChanges for MC68040.
Guillermo J. Rozas [Thu, 21 Mar 1991 23:26:47 +0000 (23:26 +0000)]
Changes for MC68040.
Ansification of cmpint.c.

34 years agoInitial revision
Guillermo J. Rozas [Thu, 21 Mar 1991 20:56:57 +0000 (20:56 +0000)]
Initial revision

34 years agoAdd two new cases of foldable expressions, to permit certain string
Chris Hanson [Thu, 21 Mar 1991 09:42:38 +0000 (09:42 +0000)]
Add two new cases of foldable expressions, to permit certain string
operations to be folded.

34 years agoFix bug in Clear_Memory introduced when constant space overwriting
Guillermo J. Rozas [Mon, 18 Mar 1991 21:08:58 +0000 (21:08 +0000)]
Fix bug in Clear_Memory introduced when constant space overwriting
hack was added.  It was fixed in memmag.c, but not here!

34 years agoSome performance improvements in the redisplay code.
Chris Hanson [Sat, 16 Mar 1991 08:14:23 +0000 (08:14 +0000)]
Some performance improvements in the redisplay code.

34 years agoChange screen object: remove operation/preempt-update? and replace it
Chris Hanson [Sat, 16 Mar 1991 08:13:31 +0000 (08:13 +0000)]
Change screen object: remove operation/preempt-update? and replace it
with preemption-modulus and operation/discretionary-flush.  Use this
to speed up inner loop of screen-update.

34 years agoImplement `predict-y-limited' and use it in place of `predict-y' to
Chris Hanson [Sat, 16 Mar 1991 08:11:28 +0000 (08:11 +0000)]
Implement `predict-y-limited' and use it in place of `predict-y' to
guarantee that the bounds on predictions are related to the size of
the window rather than the size of the buffer.

34 years agoInitial revision
Chris Hanson [Sat, 16 Mar 1991 00:03:58 +0000 (00:03 +0000)]
Initial revision

34 years agoThis version of Edwin requires microcode version 11.69 and runtime
Chris Hanson [Sat, 16 Mar 1991 00:03:18 +0000 (00:03 +0000)]
This version of Edwin requires microcode version 11.69 and runtime
version 14.113.

* Implement Emacs-style subprocesses, RCS support, and Shell mode.

* Add code to M-x save-buffers-kill-edwin to request confirmation when
  there are modified buffers or active processes.

* Change default handling of Scheme errors that occur while Edwin is
  running (i.e. errors in the Edwin implementation): such errors are
  now caught, causing a message to be written to the minibuffer, and
  aborting the current command.  This behavior may be overridden by
  the Scheme variable `debug-internal-errors?' or the Edwin variable
  `debug-on-internal-error'.

* Change M-x find-alternate-file not to signal an error if the current
  buffer is not visiting a file.

* Change Scheme Interaction mode to have input history with same
  commands as Shell mode; both are based on Olin Shivers' comint mode.

* Change buffer to have default-directory field that is separate from
  the pathname and truename fields.  All buffers have a default
  directory, even if they aren't visiting files.  Change the `cd'
  command to change a buffer's default directory.  New command `pwd'
  shows you the default directory of the current buffer.

* Fix bug in `variable-local-value'.  Rewrite implementation of local
  variable bindings to improve performance.

* Change filename prompting and completion procedures to make them
  more flexible and modular.

34 years agoRewrite `invoke-variable-assignment-daemons!' to improve performance.
Chris Hanson [Fri, 15 Mar 1991 23:49:11 +0000 (23:49 +0000)]
Rewrite `invoke-variable-assignment-daemons!' to improve performance.

34 years agoFix bug in redisplay: when narrowing or widening a buffer, its windows
Chris Hanson [Fri, 15 Mar 1991 23:48:02 +0000 (23:48 +0000)]
Fix bug in redisplay: when narrowing or widening a buffer, its windows
sometimes got confused, which could produce various errors.

34 years agoChange most auto-loading files to be loaded when Edwin is built. Only
Chris Hanson [Fri, 15 Mar 1991 23:40:26 +0000 (23:40 +0000)]
Change most auto-loading files to be loaded when Edwin is built.  Only
a few rarely used files remain auto-loading now.

34 years agoNew procedures provide support for side-effects on permanent marks:
Chris Hanson [Fri, 15 Mar 1991 23:34:14 +0000 (23:34 +0000)]
New procedures provide support for side-effects on permanent marks:
    set-mark-index!
    move-mark-to!
    mark-right-inserting-copy
    mark-left-inserting-copy

34 years agoUse `modulo' instead of `remainder' to force ring indexes into the
Chris Hanson [Fri, 15 Mar 1991 23:30:49 +0000 (23:30 +0000)]
Use `modulo' instead of `remainder' to force ring indexes into the
right range.  `remainder' is incorrect if the argument is negative.

34 years agoFix fencepost error in `re-compile-char-set'.
Chris Hanson [Fri, 15 Mar 1991 23:28:50 +0000 (23:28 +0000)]
Fix fencepost error in `re-compile-char-set'.

34 years agoAdd operations to do regular-expression search and match on strings.
Chris Hanson [Fri, 15 Mar 1991 23:27:48 +0000 (23:27 +0000)]
Add operations to do regular-expression search and match on strings.

34 years ago* Fix `define-named-structure' to make the definitions of slot indices
Chris Hanson [Fri, 15 Mar 1991 23:26:19 +0000 (23:26 +0000)]
* Fix `define-named-structure' to make the definitions of slot indices
  integrable.

* Change `define-command' to give a meaningful debugging name to the
  procedure that implements the command.

* Change `define-variable' to accept an optional fourth argument,
  which is a value validity test.

34 years agoChange callers of `UX_select_input' to call it when the operating
Chris Hanson [Thu, 14 Mar 1991 23:03:12 +0000 (23:03 +0000)]
Change callers of `UX_select_input' to call it when the operating
system makes it available.  Previously they attempted to predict when
it would be needed, which sometimes failed and is in general
unmodular.

34 years agoDelete all subprocesses when exiting Scheme.
Chris Hanson [Thu, 14 Mar 1991 10:14:24 +0000 (10:14 +0000)]
Delete all subprocesses when exiting Scheme.

34 years agoAdd support to send SIGHUP (hangup) signal to subprocesses.
Chris Hanson [Thu, 14 Mar 1991 04:29:29 +0000 (04:29 +0000)]
Add support to send SIGHUP (hangup) signal to subprocesses.
Use of this support requires microcode 11.68 or later (but if not used
older microcodes will work.)

34 years agoDon't print hash number for value that is a number.
Chris Hanson [Thu, 14 Mar 1991 04:27:13 +0000 (04:27 +0000)]
Don't print hash number for value that is a number.

34 years agoFix typo.
Chris Hanson [Thu, 14 Mar 1991 04:26:42 +0000 (04:26 +0000)]
Fix typo.

34 years ago* New primitives `process-hangup' and `pty-master-hangup' support
Chris Hanson [Thu, 14 Mar 1991 04:23:26 +0000 (04:23 +0000)]
* New primitives `process-hangup' and `pty-master-hangup' support
  sending of SIGHUP to subprocesses.

* Bug fixes for channel registering and selection.

34 years agoInclude RESTART in the list of USER-GLOBAL-NAMES, variables available
Arthur Gleckler [Tue, 12 Mar 1991 23:18:51 +0000 (23:18 +0000)]
Include RESTART in the list of USER-GLOBAL-NAMES, variables available
after (DISABLE-LANGUAGE-FEATURES).  This means students will have
access to it.

34 years agoAdd new procedures for microcode 11.67: `channel-register',
Chris Hanson [Mon, 11 Mar 1991 23:48:20 +0000 (23:48 +0000)]
Add new procedures for microcode 11.67: `channel-register',
`channel-unregister', `channel-registered?',
`channel-select-then-read', and `subprocess-global-status-tick'.

34 years ago* New primitives `channel-register', `channel-unregister', and
Chris Hanson [Mon, 11 Mar 1991 23:43:28 +0000 (23:43 +0000)]
* New primitives `channel-register', `channel-unregister', and
  `channel-registered?' allow registering of a set of channels that is
  to be watched for input at certain points.

* New primitive `channel-select-then-read' is like `channel-read', but
  returns #T if the given channel has no input but some other
  registered channel has some input instead.

* Primitive `x-display-process-events' now returns #T if there are no
  input events but a registered channel has some input.

* Primitive `make-subprocess' now permits the "inheritance" of
  Scheme's control terminal even when there is none.

* New primitive `process-status-sync-all' synchronizes the status of
  all subprocesses: it returns #T iff some status has changed since
  the last call to this primitive.

34 years agoFix typo in handler for system-call errors.
Chris Hanson [Mon, 11 Mar 1991 23:33:03 +0000 (23:33 +0000)]
Fix typo in handler for system-call errors.

34 years agoFix typo in `error:divide-by-zero'.
Chris Hanson [Mon, 11 Mar 1991 23:31:21 +0000 (23:31 +0000)]
Fix typo in `error:divide-by-zero'.

34 years agoChange keyboard input to use special operations defined by the
Chris Hanson [Mon, 11 Mar 1991 01:15:02 +0000 (01:15 +0000)]
Change keyboard input to use special operations defined by the
display, rather than input ports with standard input operations.

34 years agoChange method by which port errors are signalled. Previously a
Chris Hanson [Sun, 10 Mar 1991 22:43:02 +0000 (22:43 +0000)]
Change method by which port errors are signalled.  Previously a
condition handler was bound for every I/O operation, which made I/O
painfully slow as each binding cost at least one hundred machine
instructions.  Now, an I/O channel can have an associated port, and
when a system-call error occurs, the file descriptor associated with
the error is mapped back to the associated port, if any, and a port
error is signalled instead.

34 years agoDon't generate full cref by default.
Chris Hanson [Sun, 10 Mar 1991 05:21:17 +0000 (05:21 +0000)]
Don't generate full cref by default.

34 years agoAdd `syscall_select'.
Chris Hanson [Sun, 10 Mar 1991 01:19:33 +0000 (01:19 +0000)]
Add `syscall_select'.

34 years agoSubprocess support in this version requires microcode version 11.66 or
Chris Hanson [Sat, 9 Mar 1991 21:33:43 +0000 (21:33 +0000)]
Subprocess support in this version requires microcode version 11.66 or
later.

* Subprocess abstraction changed to use microcode's new process status
  synchronization.  The procedure `subprocess-status' causes the
  status information to be synchronized; subsequently
  `subprocess-exit-reason' returns the reason corresponding to that
  status.  Likewise, the new procedure `subprocess-status-tick'
  returns an object representing the time-stamp associated with this
  status; when the status changes, the tick is changed to a new value.
  Ticks are unique objects that are comparable using `eq?'; they are
  not ordered.

* New procedure `subprocess-remove!' removes a property from a
  subprocess (maybe this is a bad name?).

34 years ago* Process status now synchronized as follows: new primitive
Chris Hanson [Sat, 9 Mar 1991 21:11:10 +0000 (21:11 +0000)]
* Process status now synchronized as follows: new primitive
  `process-status-sync' freezes the status and exit reason, returning
  #T if it has changed since the last synchronization, or #F if it
  hasn't changed.  Primitives `process-status' and `process-reason'
  return the frozen status information but do not affect the
  synchronization.

* Primitives `process-wait' and `process-continue-foreground' no
  longer return a value.  Previously they returned the process status.

34 years agoPermit a process to be deleted regardless of its status.
Chris Hanson [Fri, 8 Mar 1991 19:50:44 +0000 (19:50 +0000)]
Permit a process to be deleted regardless of its status.

34 years agoChange procedures that return a process status to return just the
Chris Hanson [Fri, 8 Mar 1991 03:13:36 +0000 (03:13 +0000)]
Change procedures that return a process status to return just the
status and not the exit reason.  Add new procedure
`subprocess-exit-reason' to get that information.

34 years agoChange `process-reason' primitive to return 0 when the process is
Chris Hanson [Fri, 8 Mar 1991 03:10:16 +0000 (03:10 +0000)]
Change `process-reason' primitive to return 0 when the process is
running, rather than signalling an error.

34 years agoAdd new primitive `have-ptys?'.
Chris Hanson [Fri, 8 Mar 1991 01:41:48 +0000 (01:41 +0000)]
Add new primitive `have-ptys?'.

34 years agoRetain `filename' and `arguments' fields of process in subprocess
Chris Hanson [Thu, 7 Mar 1991 04:31:16 +0000 (04:31 +0000)]
Retain `filename' and `arguments' fields of process in subprocess
structure, and provide accessors to get them.  Add a properties list
to the subprocess structure.

34 years agoDon't show hash number when REPL value is an interned symbol.
Chris Hanson [Wed, 6 Mar 1991 23:03:37 +0000 (23:03 +0000)]
Don't show hash number when REPL value is an interned symbol.

34 years agoFix stack-address primitives to work on machines that don't have
Chris Hanson [Wed, 6 Mar 1991 22:57:31 +0000 (22:57 +0000)]
Fix stack-address primitives to work on machines that don't have
a trivial mapping between address and datum.

34 years agoUpdate for new error system and changes to REPL names.
Chris Hanson [Wed, 6 Mar 1991 21:12:23 +0000 (21:12 +0000)]
Update for new error system and changes to REPL names.

34 years agoDon't load option files more than once.
Chris Hanson [Wed, 6 Mar 1991 18:39:26 +0000 (18:39 +0000)]
Don't load option files more than once.

34 years agoAdd new procedure `bind-default-condition-handler'.
Chris Hanson [Wed, 6 Mar 1991 05:14:50 +0000 (05:14 +0000)]
Add new procedure `bind-default-condition-handler'.

34 years agoChange an instance of `error:bad-range-argument' to
Chris Hanson [Wed, 6 Mar 1991 05:04:37 +0000 (05:04 +0000)]
Change an instance of `error:bad-range-argument' to
`error:divide-by-zero'.

34 years agoFix typo and add ADD-PSEUDO-REGISTER-ALIAS!
Guillermo J. Rozas [Wed, 6 Mar 1991 03:46:47 +0000 (03:46 +0000)]
Fix typo and add ADD-PSEUDO-REGISTER-ALIAS!

34 years agoFix bug: RTL generation of return statement whose value is a constant
Chris Hanson [Wed, 6 Mar 1991 01:01:23 +0000 (01:01 +0000)]
Fix bug: RTL generation of return statement whose value is a constant
or a trivially-closed procedure was incorrect.  Part of the code
generation assumed that the value would be used directly, while
another part assumed that it would be stored in a register and then
the register would be referenced.  Now both parts agree that the value
is used directly in this case.

34 years agoFix typo in bignum =.
Chris Hanson [Wed, 6 Mar 1991 00:32:59 +0000 (00:32 +0000)]
Fix typo in bignum =.

34 years agoMerge in some of Arthur's and Markf's comments. Tag the rest.
Guillermo J. Rozas [Tue, 5 Mar 1991 20:54:36 +0000 (20:54 +0000)]
Merge in some of Arthur's and Markf's comments.  Tag the rest.

34 years agoMake call/cc more obvious.
Guillermo J. Rozas [Sat, 2 Mar 1991 04:13:56 +0000 (04:13 +0000)]
Make call/cc more obvious.

34 years agoDon't generate full cref by default.
Chris Hanson [Fri, 1 Mar 1991 23:25:15 +0000 (23:25 +0000)]
Don't generate full cref by default.

34 years agoFix other input-buffer operations to recover gracefully when the
Chris Hanson [Fri, 1 Mar 1991 22:12:33 +0000 (22:12 +0000)]
Fix other input-buffer operations to recover gracefully when the
buffer's channel is closed.

34 years agoFix other input-buffer operations to recover gracefully when the
Chris Hanson [Fri, 1 Mar 1991 21:22:10 +0000 (21:22 +0000)]
Fix other input-buffer operations to recover gracefully when the
buffer's channel is closed.

34 years ago* Add new procedure, CREF/GENERATE-CREF-UNUSUAL, that writes a ".cref"
Chris Hanson [Fri, 1 Mar 1991 20:19:54 +0000 (20:19 +0000)]
* Add new procedure, CREF/GENERATE-CREF-UNUSUAL, that writes a ".cref"
  file containing only the unusual cref information, such as unbound
  variables or multiple definitions.  Change
  CREF/GENERATE-CONSTRUCTORS to call this procedure.

* Rewrite cref formatting code to improve performance.  The
  improvement seems only slight.

34 years ago*** empty log message ***
Chris Hanson [Fri, 1 Mar 1991 20:15:47 +0000 (20:15 +0000)]
*** empty log message ***

34 years agoFix typo in last change.
Chris Hanson [Fri, 1 Mar 1991 06:45:38 +0000 (06:45 +0000)]
Fix typo in last change.

34 years agoFirst draft is finished.
Guillermo J. Rozas [Fri, 1 Mar 1991 02:06:56 +0000 (02:06 +0000)]
First draft is finished.

34 years ago* New subprocess design requires microcode 11.63 or later.
Chris Hanson [Fri, 1 Mar 1991 01:06:31 +0000 (01:06 +0000)]
* New subprocess design requires microcode 11.63 or later.

* New procedures `make-pipe', `weak-delq!'.

* Procedures for constructing generic I/O ports and for manipulating
  I/O channels are now exported to the global environment.

* Automatically close input channels when EOF is encountered.

34 years agoUse `cref/generate-constructors' instead of `cref/generate-all'.
Chris Hanson [Fri, 1 Mar 1991 01:01:59 +0000 (01:01 +0000)]
Use `cref/generate-constructors' instead of `cref/generate-all'.

34 years ago* New primitive `make-pipe'.
Chris Hanson [Fri, 1 Mar 1991 00:56:27 +0000 (00:56 +0000)]
* New primitive `make-pipe'.

* Redesign of subprocess primitives.  New primitives are lower-level,
  permitting more flexibility, and support job control properly.

34 years agoAdd text describing fixnums and calls to the interface.
Guillermo J. Rozas [Fri, 1 Mar 1991 00:23:01 +0000 (00:23 +0000)]
Add text describing fixnums and calls to the interface.

34 years agoAdd text describing hairy invocation rules.
Guillermo J. Rozas [Thu, 28 Feb 1991 22:00:01 +0000 (22:00 +0000)]
Add text describing hairy invocation rules.

34 years agoFirst cut at RTL statement rules.
Guillermo J. Rozas [Thu, 28 Feb 1991 18:07:29 +0000 (18:07 +0000)]
First cut at RTL statement rules.

34 years agoDocumentation for predicate rules.
Guillermo J. Rozas [Wed, 27 Feb 1991 23:34:02 +0000 (23:34 +0000)]
Documentation for predicate rules.

34 years agoNew delta.
Guillermo J. Rozas [Wed, 27 Feb 1991 21:31:43 +0000 (21:31 +0000)]
New delta.

34 years agoNew delta.
Guillermo J. Rozas [Wed, 27 Feb 1991 15:15:02 +0000 (15:15 +0000)]
New delta.

34 years ago"bchpur.c" must include "zones.h".
Chris Hanson [Tue, 26 Feb 1991 21:33:51 +0000 (21:33 +0000)]
"bchpur.c" must include "zones.h".

34 years ago"bchpur.c" must include "zones.h".
Chris Hanson [Tue, 26 Feb 1991 21:15:56 +0000 (21:15 +0000)]
"bchpur.c" must include "zones.h".

34 years agoFix broken function definitions.
Chris Hanson [Tue, 26 Feb 1991 21:14:40 +0000 (21:14 +0000)]
Fix broken function definitions.

34 years agoYet more text.
Guillermo J. Rozas [Tue, 26 Feb 1991 04:25:11 +0000 (04:25 +0000)]
Yet more text.

34 years agoYet more text
Guillermo J. Rozas [Tue, 26 Feb 1991 03:35:50 +0000 (03:35 +0000)]
Yet more text

34 years agoYet more text.
Guillermo J. Rozas [Sun, 24 Feb 1991 02:09:38 +0000 (02:09 +0000)]
Yet more text.

34 years agoPut a little patch in uxtrap.c and the memory management to detect
Guillermo J. Rozas [Sun, 24 Feb 1991 01:11:22 +0000 (01:11 +0000)]
Put a little patch in uxtrap.c and the memory management to detect
cases when the stack has overflowed and constant space has been
overwritten.

Ansify various memory management files.

34 years agoInitial description of all assembler files.
Guillermo J. Rozas [Sat, 23 Feb 1991 21:13:18 +0000 (21:13 +0000)]
Initial description of all assembler files.

34 years agoSome more text.
Guillermo J. Rozas [Sat, 23 Feb 1991 15:00:19 +0000 (15:00 +0000)]
Some more text.

34 years agoYet more text.
Guillermo J. Rozas [Sat, 23 Feb 1991 05:34:01 +0000 (05:34 +0000)]
Yet more text.

34 years agoYet more text.
Guillermo J. Rozas [Fri, 22 Feb 1991 22:51:31 +0000 (22:51 +0000)]
Yet more text.

34 years agoInitialize the condition system a little later. It depends on the
Chris Hanson [Fri, 22 Feb 1991 21:16:31 +0000 (21:16 +0000)]
Initialize the condition system a little later.  It depends on the
lambda abstraction being initialized.

34 years agoFix typo in error name. This would have been caught by type-checking
Chris Hanson [Fri, 22 Feb 1991 21:15:30 +0000 (21:15 +0000)]
Fix typo in error name.  This would have been caught by type-checking
in compiled code.

34 years agoFix typo in error name. This would have been caught by type-checking
Chris Hanson [Fri, 22 Feb 1991 21:03:07 +0000 (21:03 +0000)]
Fix typo in error name.  This would have been caught by type-checking
in compiled code.

34 years agoSome more text...
Guillermo J. Rozas [Thu, 21 Feb 1991 21:59:32 +0000 (21:59 +0000)]
Some more text...

34 years agobignum_trim did not produce 0-length bignums even when there were no
Guillermo J. Rozas [Thu, 21 Feb 1991 16:17:48 +0000 (16:17 +0000)]
bignum_trim did not produce 0-length bignums even when there were no
bits set.

34 years agoInitial revision
Guillermo J. Rozas [Wed, 20 Feb 1991 23:23:59 +0000 (23:23 +0000)]
Initial revision

34 years agoChange subprocess code to be a loadable option.
Chris Hanson [Tue, 19 Feb 1991 22:45:49 +0000 (22:45 +0000)]
Change subprocess code to be a loadable option.

34 years agoAllow cref to generate itself correctly the first time by using the
Guillermo J. Rozas [Sat, 16 Feb 1991 17:44:53 +0000 (17:44 +0000)]
Allow cref to generate itself correctly the first time by using the
triv.* files.

34 years agoFix bug in fixnum-lsh. It was behaving like an arithmetic shift
Guillermo J. Rozas [Sat, 16 Feb 1991 07:55:09 +0000 (07:55 +0000)]
Fix bug in fixnum-lsh.  It was behaving like an arithmetic shift
rather than a logical shift.

34 years agoImprove fixnum->object to use a temporary register if necessary.
Guillermo J. Rozas [Sat, 16 Feb 1991 05:45:30 +0000 (05:45 +0000)]
Improve fixnum->object to use a temporary register if necessary.
This allows it to be targetted to the stack or heap.

34 years agoFix bug by which fixnum-lsh was actually fixnum-ash (arithmetic shift
Guillermo J. Rozas [Sat, 16 Feb 1991 01:09:02 +0000 (01:09 +0000)]
Fix bug by which fixnum-lsh was actually fixnum-ash (arithmetic shift
rather than logical).

34 years agoChanges for new error system in runtime 14.106.
Chris Hanson [Fri, 15 Feb 1991 20:34:34 +0000 (20:34 +0000)]
Changes for new error system in runtime 14.106.

34 years agoChanges for new error system in runtime 14.106.
Chris Hanson [Fri, 15 Feb 1991 18:17:14 +0000 (18:17 +0000)]
Changes for new error system in runtime 14.106.

34 years agoChanges to error system:
Chris Hanson [Fri, 15 Feb 1991 18:08:01 +0000 (18:08 +0000)]
Changes to error system:

* Complete redesign of the error system.  Conditions now have named
  fields like records, and an interface similar to that of the record
  abstraction.  Condition types have single inheritance instead of
  multiple inheritance; the latter can be implemented with some small
  effort should someone need it.  Significantly richer taxonomy of
  condition types.  New "restart" mechanism like that of Common Lisp.
  Hooks for overriding default handlers for errors and warnings.

* The special forms `error' and `bkpt' have been changed to be
  procedures.

* `error:datum-out-of-range' no longer accepts a second argument; use
  new procedure `error:bad-range-argument' instead.

* `error:illegal-datum' has been eliminated; use either
  `error:wrong-type-datum' or `error:wrong-type-argument' instead.

Changes to REPL:

* ";Value" message produced by REPL now prints out a hash number if
  the value is a pointer object.

* New procedure `ve' starts a sub-REPL in a given environment.

* New procedure `restart' selects a restart option and invokes it.  If
  invoked with no arguments, it presents a list of options and prompts
  for the user to select one by number; otherwise it is called with
  one argument, an option number.

* The variable `cmdl-interrupt/abort-top-level/reset?' has been
  eliminated.

* Eliminated "proceed points" and "proceed continuations".  These are
  replaced by new "restarts" mechanism.

* `cmdl-message/active' now passes the current cmdl object as an
  argument to the actor procedure.

* The procedures `abort-to-nearest-driver',
  `abort-to-previous-driver', and `abort-to-top-level-driver' have
  been eliminated.  The procedures `abort->nearest',
  `abort->previous', and `abort->top-level' have been generalized to
  accept a string as an argument; use these in place of the eliminated
  procedures.

Other changes:

* Debugger has a new command, K, that chooses a restart option and
  invokes it.

* New predicates `interned-symbol?' and `uninterned-symbol?'.