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	revision 801, Mon Mar 19 22:53:00 2001 UTC	revision 852, Tue Jun 26 02:56:11 2001 UTC
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14
15	----------------------------------------------------------------------	----------------------------------------------------------------------
16	Name: Matthias Blume	Name: Matthias Blume
17		Date: 2001/06/25 22:55:00 EDT
18		Tag: blume-20010625-x86pc
19		Description:
20
21		Fixed a nasty bug in the X86 assembly code that caused signal
22		handlers to fail (crash) randomly.
23
24		----------------------------------------------------------------------
25		Name: Matthias Blume
26		Date: 2001/06/25 12:05:00 EDT
27		Tag: blume-20010625-nlffigen
28		Description:
29
30		This update fixes a number of minor bugs in ml-nlffigen as reported by
31		Nick Carter <nbc@andrew.cmu.edu>.
32
33		1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
34		2. Default names for generated files are now derived from the name of
35		the C file *without its directory*.  In particular, this causes generated
36		files to be placed locally even if the C file is in some system directory.
37		3. Default names for generated signatures and structures are also derived
38		from the C file name without its directory.  This avoids silly things
39		like "structure GL/GL".
40		(Other silly names are still possible because ml-nlffigen does not do
41		a thorough check of whether generated names are legal ML identifiers.
42		When in doubt, use command line arguments to force particular names.)
43
44		----------------------------------------------------------------------
45		Name: Matthias Blume
46		Date: 2001/06/21 12:25:00 EDT
47		Tag: blume-20010621-eXene
48		Description:
49
50		eXene now compiles and (sort of) works again.
51
52		The library name (for version > 110.33) is $/eXene.cm.
53
54		I also added an new example in src/eXene/examples/nbody.  See the
55		README file there for details.
56
57		----------------------------------------------------------------------
58		Name: Matthias Blume
59		Date: 2001/06/20 16:40:00 EDT
60		Tag: blume-20010620-cml
61		Description:
62
63		CML now compiles and works again.
64
65		Libraries (for version > 110.33):
66
67		$cml/cml.cm            Main CML library.
68		$cml/basis.cm          CML's version of $/basis.cm.
69		$cml/cml-internal.cm   Internal helper library.
70		$cml/core-cml.cm       Internal helper library.
71		$cml-lib/trace-cml.cm  Tracing facility.
72		$cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
73
74		The installer (config/install.sh) has been taught how to properly
75		install this stuff.
76
77		----------------------------------------------------------------------
78		Name: Matthias Blume
79		Date: 2001/06/19 17:55:00 EDT
80		Tag: blume-20010619-instantiate
81		Description:
82
83		This un-breaks the fix for bug 1432.
84		(The bug was originally fixed in 110.9 but I broke it again some
85		time after that.)
86
87		----------------------------------------------------------------------
88		Name: Matthias Blume
89		Date: 2001/06/19 17:25:00 EDT
90		Tag: blume-20010619-signals
91		Description:
92
93		This should (hopefully) fix the long-standing signal handling bug.
94		(The runtime system was constructing a continuation record with an
95		incorrect descriptor which would cause the GC to drop data on the floor...)
96
97		----------------------------------------------------------------------
98		Name: Matthias Blume
99		Date: 2001/06/15 15:05:00 EDT
100		Tag: blume-20010615-moresparc
101		Description:
102
103		Here is a short late-hour update related to Sparc c-calls:
104
105		-- made handling of double-word arguments a bit smarter
106
107		-- instruction selection phase tries to collapse certain clumsily
108		constructed ML-Trees; typical example:
109
110		ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
111
112		This currently has no further impact on SML/NJ since mlriscGen does
113		not seem to generate such patterns in the first place, and c-calls
114		(which did generate them in the beginning) has meanwhile been fixed
115		so as to avoid them as well.
116
117		----------------------------------------------------------------------
118		Name: Matthias Blume
119		Date: 2001/06/15 15:05:00 EDT
120		Tag: blume-20010615-sparc
121		Description:
122
123		The purpose of this update is to provide an implementation of NLFFI
124		on Sparc machines.
125
126		Here are the changes in detail:
127
128		* src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
129		the Sparc implementation of the c-calls API.
130		* The Sparc backend of SML/NJ has been modified to uniformely use %fp
131		for accessing the ML frame.  Thus, we have a real frame pointer and
132		can freely modify %sp without need for an omit-frame-ptr phase.
133		The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
134		this case.
135		* ml-nlffigen has been taught to produce code for different architectures
136		and calling conventions.
137		* In a way similar to what was done in the x86 case, the Sparc
138		backend uses its own specific extension to mltree.  (For example,
139		it needs to be able to generate UNIMP instructions which are part
140		of the calling convention.)
141		* ml-nlffi-lib was reorganized to make it more modular (in particular,
142		to make it easier to plug in new machine- and os-dependent parts).
143
144		There are some other fairly unrelated bug fixes and cleanups as well:
145
146		* I further hacked the .cm files for MLRISC tools (like MDLGen) so
147		that they properly share their libraries with existing SML/NJ libraries.
148		* I fixed a minor cosmetic bug in CM, supressing certain spurious
149		follow-up error messages.
150		* Updates to CM/CMB documentation.
151
152		TODO items:
153
154		* MLRISC should use a different register as its asmTemp on the Sparc.
155		(The current %o2 is a really bad choice because it is part of the
156		calling conventions, so things might interfere in unexpected ways.)
157
158		----------------------------------------------------------------------
159		Name: Matthias Blume
160		Date: 2001/06/07
161		Tag: blume-20010607-calls
162		Description:
163
164		A number of internal changes related to C calls and calling conventions:
165
166		1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
167		number of bytes popped implicitly (by the callee).  In most cases
168		this field is 0 but on x86/win32 it is some non-zero value.  This
169		is information provided for the benefit of the "omit-frameptr" pass.
170		2. The CALL instruction on the x86 carries a similar "pops" field.
171		The instruction selection phase copies its value from the ML-Tree
172		CALL statement.
173		3. On all other architectures, the instruction selection phase checks
174		whether "pops=0" and complains if not.
175		4. The c-calls implementation for x86 now accepts two calling conventions:
176		"ccall" and "stdcall".  When "ccall" is selected, the caller cleans
177		up after the call and pops is set to 0.  For "stdcall", the caller
178		does nothing, leaving the cleanup to the callee; pops is set to
179		the number of bytes that were pushed onto the stack.
180		5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
181		distinguish between "ccall" and "stdcall".
182		6. The UNIMP instruction has been added to the supported Sparc instruction
183		set. (This is needed for implementing the official C calling convention
184		on this architecture.)
185		7. I fixed some of the .cm files under src/MLRISC/Tools to make them
186		work with the latest CM.
187
188		----------------------------------------------------------------------
189		Name: Matthias Blume
190		Date: 2001/06/05 15:10:00 EDT
191		Tag: blume-20010605-cm-index
192		Description:
193
194		0. The "lambdasplit" parameter for class "sml" in CM has been documented.
195
196		1. CM can now generate "index files".  These are human-readable files
197		that list on a per-.cm-file basis each toplevel symbol defined or
198		imported.  The location of the index file for
199		<p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
200		To enable index-file generation, set CM.Control.generate_index to true
201		or export an environment-symbol: export CM_GENERATE_INDEX=true.
202
203		The CM manual has been updated accordingly.
204
205		2. I made some slight modifications to the c-calls API in MLRISC.
206
207		a) There is now a callback to support saving/restoring of
208		dedicated but caller-save registers around the actual call
209		instruction.
210		b) One can optionally specify a comment-annotation for the
211		call instruction.
212
213		3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
214		(For example, the comment annotation shows the C prototype of
215		the function being called.)
216
217		----------------------------------------------------------------------
218		Name: Matthias Blume
219		Date: 2001/06/01 13:30:00 EDT
220		Tag: blume-20010601-nlffi-cleanup
221		Description:
222
223		This is mostly a cleanup of MLFFI stuff:
224
225		- some signature files have been put into a more exposed place
226		- the ugly 'f type parameter is gone (simplifies types tremendously!)
227		- ml-nlffigen changed accordingly
228		- tutorial updated
229
230		Other changes:
231
232		- author's affiliation in CM manual(s) updated
233		- some more recognized keywords added to Allen's sml.sty
234
235		----------------------------------------------------------------------
236		Name: Matthias Blume
237		Date: 2001/05/25 15:30:00 EDT
238		Tag: blume-20010525-iptr
239		Description:
240
241		- put the official 110.33-README (as it appears on the ftp server) under
242		CVS
243		- fixed a small bug related to incomplete pointer types in
244		ml-nlffigen
245		- small cosmetic change to the ml-nlffi-lib's "arr" type constructor
246		(it does not need the 'f type parameter)
247
248		----------------------------------------------------------------------
249		Name: Matthias Blume
250		Date: 2001/05/23 14:30:00 EDT
251		Tag: Release_110_33
252		Description:
253
254		New version number (110.33).  New bootfiles.
255
256		----------------------------------------------------------------------
257		Name: Matthias Blume
258		Date: 2001/05/22 18:06:00 EDT
259		Tag: blume-20010522-targets
260		Description:
261
262		Made install.sh use file config/targets.customized if it exists, falling
263		back to config/targets if it doesn't.  This way one can have a customized
264		version of the targets file without touching the "real thing", thus
265		eliminating the constant fear of accidentally checking something bogus
266		back into the CVS repository...  (File config/targets.customized must
267		not be added to the repository!)
268
269		----------------------------------------------------------------------
270		Name: Matthias Blume
271		Date: 2001/05/22 16:30:00 EDT
272		Tag: blume-20010522-minitut
273		Description:
274
275		1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
276		struct returns.
277		2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
278		incomplete, preliminary documentation for NLFFI.
279
280		----------------------------------------------------------------------
281		Name: Matthias Blume
282		Date: 2001/05/14 11:30:00 EDT
283		Tag: blume-20010514-script
284		Description:
285
286		Some bugs in install script fixed.
287
288		In addition to that I also made a slight change to the NLFFI API:
289		Functors generated by ml-nlffigen now take the dynamic library as a
290		straight functor argument, not as a suspended one.  (The original
291		functor code used to force the suspension right away anyway, so there
292		was nothing gained by this complication of the interface.)
293
294		----------------------------------------------------------------------
295		Name: Matthias Blume
296		Date: 2001/05/11 14:35:00 EDT
297		Tag: blume-20010511-ml-nlffi
298		Description:
299
300		I finally took the plunge and added my new FFI code to the main
301		repository.  For x86-linux it is now ready for prime-time.
302
303		There are two new subdirectories of "src":
304
305		- ml-nlffi-lib:
306		The utility library for programs using the FFI interface.
307		Here is the implementation of $/c.cm and its associated low-level
308		partners $/c-int.cm and $/memory.cm.
309		- ml-nlffigen:
310		A stand-alone program for generating ML glue code from C source
311		code.
312
313		Building ml-nlffigen requires $/ckit-lib.cm.
314
315		The config/install.sh script has been updates to do the Right Thing
316		(hopefully).
317
318		Notice that the source tree for the C-Kit will not be put under "src"
319		but directly under the installation root directory.  (This is the
320		structure that currently exists on the CVS server when you check out
321		module "sml".)  Fortunately, config/install.sh knows about this oddity.
322
323		Bugs: No documentation yet.
324
325		----------------------------------------------------------------------
326		Name: Matthias Blume
327		Date: 2001/05/09 16:35:00 EDT
328		Tag: blume-20010509-cpscontract
329		Description:
330
331		Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
332		wrapper/unwrapper elimination did not decrement usage counts and some
333		dead variables got overlooked by the dead-up logic.)
334
335		----------------------------------------------------------------------
336		Name: Lal George
337		Date: 2001/05/08  17:26:09 EDT
338		Tag: george-20010508-omit-frameptr
339		Description:
340
341		Changes to implement the omit-frame-pointer optimization to support
342		raw C calls. For now, there is only support on the Intel x86, but
343		other architectures will follow as more experience is gained with this.
344
345
346		----------------------------------------------------------------------
347		Name: Matthias Blume
348		Date: 2001/05/07 14:40:00 EDT
349		Tag: blume-20010507-proxies
350		Description:
351
352		I made into "proxy libraries" all libraries that qualify for such a
353		change.  (A qualifying library is a library that has another library or
354		groups as its sole member and repeats that member's export list
355		verbatim.  A proxy library avoids this repetition by omitting its export
356		list, effectively inheriting the list that its (only) member exports.
357		See the CM manual for more explanation.)
358		The main effect is that explicit export lists for these libraries
359		do not have to be kepts in sync, making maintenance a bit easier.
360
361		I also added copyright notices to many .cm-files.
362
363		Last but not least, I made a new set of bootfiles.
364
365		----------------------------------------------------------------------
366		Name: Matthias Blume
367		Date: 2001/05/04 17:00:00 EDT
368		Tag: blume-20010504-cm-lsplit
369		Description:
370
371		0. John merged pending changes to $/smlnj-lib.cm
372
373		1. Allen's previous change accidentally backed out of one of Lal's
374		earlier changes.  I undid this mistake (re-introducing Lal's change).
375
376		2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
377		within the compiler where applicable.  There is some code simplification
378		because of that.
379
380		3. The "split" phase (in FLINT) is now part of the default list of phases.
381		Compiler.Control.LambdaSplitting.* can be used to globally control the
382		lambda-splitting (cross-module-inlining) engine.  In addition to that,
383		it can now also be controlled on a per-source basis: CM has been taught
384		a new tool parameter applicable to ML source files.
385
386		- To turn lambda-splitting off completely:
387		local open Compiler.Control.LambdaSplitting in
388		val _ = set Off
389		end
390		- To make "no lambda-splitting" the global default (but allow per-source
391		overriding); this is the initial setting:
392		local open Compiler.Control.LambdaSplitting in
393		val _ = set (Default NONE)
394		end
395		- To make "lambda-splitting with aggressiveness a" the global default
396		(and allow per-source overriding):
397		local open Compiler.Control.LambdaSplitting in
398		val _ = set (Default (SOME a))
399		end
400
401		- To turn lambda-splitting off for a given ML souce file (say: a.sml)
402		write (in the respective .cm-file):
403		a.sml (lambdasplitting:off)
404		- To turn lambda-splitting for a.sml on with minimal aggressiveness:
405		a.sml (lambdasplitting:on)
406		- To turn lambda-splitting for a.sml on with aggressiveness <a> (where
407		<a> is a decimal non-negative integer):
408		a.sml (lambdasplitting:<a>)
409		- To turn lambda-splitting for a.sml on with maximal aggressiveness:
410		a.sml (lambdasplitting:infinity)
411		- To use the global default for a.sml:
412		a.sml (lambdasplitting:default)
413		or simply
414		a.sml
415
416		----------------------------------------------------------------------
417		Name: Allen Leung
418		Date: 2001/05/04 01:57:00 EDT
419		Tag: leunga-20010504-sync
420		Description:
421
422		MLRISC features.
423
424		1. Fix to CMPXCHG instructions.
425		2. Changed RA interface to allow annotations in callbacks.
426		3. Added a new method to the stream interface to allow annotations updates.
427
428		----------------------------------------------------------------------
429		Name: Matthias Blume
430		Date: 2001/05/01 11:45:00 EDT
431		Tag: blume-20010501-pcedittmp
432		Description:
433
434		Changed install.sh to use the current working directory instead of
435		/usr/tmp for a temporary file (pcedittmp).  The previous choice
436		of /usr/tmp caused trouble with MacOS X because of file premission
437		problems.
438
439		----------------------------------------------------------------------
440		Name: Matthias Blume
441		Date: 2001/04/20 11:10:00 EDT
442		Tag: blume-20010420-inMLflag
443		Description:
444
445		- added vp_limitPtrMask to vproc-state.h
446		(for use by the raw-C-calls mechanism to implement proper interrupt
447		handling)
448		- made the ML compiler aware of various data-structure offsets so it
449		can generate code for accessing the vp_inML flag and vp_limitPtrMask
450		- tweaked mlriscGen.sml to have it emit interrupt-handling code for
451		raw C-calls
452
453		----------------------------------------------------------------------
454		Name: Lal George
455		Date: 2001/04/20 09:15:28 EDT
456		Tag: george-20010420-macosX
457		Description:
458
459		- Changes to port to Mac OS X; Darwin.
460
461		- In the process I found that sqrt was broken on the PPC, because the
462		fsqrt instruction is not implemented.
463
464		----------------------------------------------------------------------
465		Name: Matthias Blume
466		Date: 2001/04/18 12:45:00 EDT
467		Tag: blume-20010418-ccalls
468		Description:
469
470		- fixed two off-by-4 errors in the x86-specific c-calls implementation
471		(this bug prevented structure arguments containing pointers from being
472		passed correctly)
473		- changed the raw-C-call code in mlriscGen.sml in such a way that
474		structure arguments are represented as a pointer to the beginning
475		of the structure (instead of having a series of synthesized arguments,
476		one for each structure member)
477
478		- made makeml script's verbosity level configurable via environment
479		variable (MAKEML_VERBOSITY)
480
481		- eliminated placeholder implementations for f32l, w16s, i16s, and f32s
482		in rawmem-x86.sml; we are now using the real thing
483
484		----------------------------------------------------------------------
485		Name: Matthias Blume
486		Date: 2001/03/22 16:25:00 EST
487		Tag: blume-20010322-bootfiles
488		Description:
489
490		Created a new set of bootfiles (for your automatic installation convenience).
491
492		----------------------------------------------------------------------
493		Name: Matthias Blume
494		Date: 2001/03/22 15:10:00 EST
495		Tag: blume-20010322-rawmem-parcm
496		Description:
497
498		1. All "raw memory access" primitives for the new FFI are implemented now
499		(at least on the x86).
500		2. Some further cleanup of CM's parallel make mechanism.
501
502		----------------------------------------------------------------------
503		Name: Matthias Blume
504	Date: 2001/03/19 17:53:00 EST	Date: 2001/03/19 17:53:00 EST
505	Tag: blume-20010319-parallel	Tag: blume-20010319-parallel
506	Description:	Description:

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