Make makegen/m4.sh report m4 failure by returning 1.

Previously, the return code of m4 was totally ignored, because it was
invoked only in a pipeline not at the end.  Because of brain damage
in shell script, we have to use a temporary file to let the subshell
in which we run m4 report the failure to the script so that the
script can know to return 1.

If native code is enabled, check for m4 in microcode/configure.

Track the line count when reading.

New input port operation 'INPUT-LINE.

Change %d to %ld for pointer diffs without C99.

Use %td only if C99 is supported.

Detect whether C99 is supported.

Pruned too much from src/microcode/option.c.

* src/microcode/option.c (add_to_library_path, quote_string)
(strlen_after_quoting, must_quote_char_p): Restored inside #ifdef
__APPLE__.

Use %td, not %d, to format ptrdiff_t values with printf.

Fix recent change to xwindow extra structures.

Fix unary predicate assembly hooks for flonums on x86-64.

Handle non-character input events in READ-EXTENSION-KEY.

Got the (incomplete) svm1 back end complete enough to generate LAP.

* src/Makefile.in (all-svm): New target, analogous to all-liarc.

* src/compiler/configure: Added make.bin to LINKS, so a purely
interpreted compiler can be loaded.

* src/compiler/machines/svm/assembler-compiler.scm
(write-copyright+license):  Punted.

(rt-defn-decoder-constructor): Removed leftover references to
coding-type, which became an implicit rt-coding-type parameter.

* src/compiler/machines/svm/assembler-runtime.scm
(init-assembler-instructions!): New skeleton.  Error actions.

(make-symbol-table): Renamed "make-typed-symbol-table", to keep it
distinct from back/symtab.scm's "symbol-table", which is used by the
assembler top-level (back/bittop.scm, back/bitutl.scm).

(Assembler Machine Dependencies): New.  Just the required (per CREF
analysis) bindings, pilfered from i386/assmd.scm.

(Instructions, Memory addressing, Traps, Machine registers): Removed
to machine.scm.

(Register references): Removed to lapgen.scm, except
word-register-reference? and float-register-reference?.  Then had to
copy register-reference?, and import register-reference AND
reference->register.

(Symbolic addresses): Commented out for now.

* src/compiler/machines/svm/compile-assembler.scm: Punt loading
write-mit-scheme-copyright from ../../../runtime/version, and the
commented out LAP macrology.

* src/compiler/machines/svm/compiler.pkg (compiler lap-syntaxer):
Include CREF, for decls.scm.  Moved assembler-runtime.scm,
assembler-db.scm, and svm1-opcodes.scm to (compiler assembler).

(compiler assembler): Added back/symtab.scm to complete the
machine-independent assembler top-level.  Import from (compiler
lap-syntaxer) some of the register-reference procedures that just
moved to lapgen.scm.  Import add-instruction!.

* src/compiler/machines/svm/compiler.sf: Load option SF.  This file is
intended to run in a band withOUT an existing (compiler) package.

* src/compiler/machines/svm/decls.scm (init-packages): No longer used.

(setup-source-nodes! env): Typo.

* src/compiler/machines/svm/disassembler.scm: For now a no-op.
Deleted the code copied verbatim from i386/dassm1.scm.

* src/compiler/machines/svm/lapgen.scm (available-machine-registers):
New.

(Register references): New from assembler-runtime.
(register-reference): Fixed to include the
un-available-machine-registers.

(rref:word-0, etc.): New.

(make-internal-procedure-label): Fixed to use new
encode-internal-procedure-offset.
(encode-internal-procedure-offset): New.  Copied from
encode-continuation-offset.

(invert-condition): Make conditions a proper alist.

(interpreter-call-argument?, interpreter-call-temporary)
(rtl:simple-offset?, simple-offset->ea!): New from i386, like
interpreter-call-argument->machine-register!, BUT uses
prefix-instructions!, if necessary, and a temporary which, with Good
Luck, will use the same alias as the argument.

(parse-memory-address): Fixed to avoid thinking (un-thunking?) #f.

* src/compiler/machines/svm/lapopt.scm (optimize-linear-lap): Now a
no-op.  Deleted the code copied verbatim from i386/lapopt, i.e. all of
it.

* src/compiler/machines/svm/machine.scm (Architecture Parameters):
Needed endianness, scheme-datum-width, and some *-fixnum/*-limit
bindings.

(Instructions, Memory addressing, Traps, Machine registers): New from
assembler-runtime.scm.  This makes the regnum:*, inst:*, trap:* and
ea:* bindings available to (compiler lap-syntaxer) AND (compiler
lap-optimizer), assuming the latter eventually wants to generate some
LAP, as in other back-ends.

(interpreter-register:environment, etc.): New from i386.

(define-machine-register): Closing the syntactic environment around
e.g., interpreter-value-register, causes it to be renamed.  Generate
defines with bare symbols for binding names.

(interpreter-regs-pointer?, interpreter-regs-pointer): New.  No-ops.

(rtl:machine-register?): Map ALL registers, including dynamic-link,
environment, and all of the interpreter-call-result: registers.

(Closure format): Added a closure-entry-size binding, as in other
architectures, a reflection of CLOSURE_ENTRY_SIZE in
microcode/cmpintmd/svm1.h.

* src/compiler/machines/svm/make.scm: New.  Cribbed from i386.

* src/compiler/machines/svm/rgspcm.scm: Typo.

* src/compiler/machines/svm/rules.scm: Fixed some typos, e.g. source
vs. target, trap:[compiler-]lexpr-apply, etc.  Added a few rules for
CONSTANTs and CONS-POINTERs.  Expect just an effective address from
parse-memory-address.

(interrupt-check): Punted, along with shared closure interrupt code.
simple-procedure-header only needs to generate an interrupt-test-*
instruction.

(generate/cons-closure, generate/cons-multi-closure): Replaced the old
i386 code.

(generate/closure-header): Replaced the old i386 code.  Use
simple-procedure-header.

(generate/make-magic-closure-constant, make-closure-longword)
(make-closure-code-longword): Punted.  Compiled closure entries do not
even have a format word!

(CONS-MULTICLOSURE, generate/quotation-header, generate/remote-link)
(generate/remote-links): Replaced the old i386 code.

(generate/constants-block): Finished skeletal code.

(INTERPRETER-CALL:): Provide interpreter-call-temporary argument to
the trap:* instructions.

(integer-power-of-2?): Added, for FIXNUM-2-ARGS.

* src/configure.ac (ALL_TARGET): Set to "all-svm".

* src/etc/compile-svm.sh: New.

* src/microcode/cmpintmd/svm1.c, svm1.h: Extern read_u16, for
svm1-interp.

* src/microcode/option.c (add_to_library_path, quote_string)
(strlen_after_quoting, must_quote_char_p): Removed.  No longer in use.

* src/microcode/svm1-interp.c (enter_closure): Use CLOSURE_COUNT_SIZE,
CLOSURE_ENTRY_SIZE, skip_compiled_closure_padding and read_u16.  This
makes enter_closure look like the other closure handling procedures in
cmpintmd/svm1.c.

Avoid 122 warnings from gcc4.4: dereferencing type-punned pointer will break strict-aliasing rules

Better handling of keywords so escaping works correctly.

Reduce flag options to 'PREFIX, 'SUFFIX, or #F

Remove trailing whitespace.

Fix over-long lines; remove trailing whitespace.

Export guarantee-*-lambda-list.

Parse keywords based on value of *keyword-style*.

Implement keyword objects.

Add support for quoting keyword-like symbols.

Avoid constructing sequence-3 objects.

Construct open-blocks from sequence-2.

Recognize open-blocks even if they appear in a sequence-2.

Don't track invocation count on variables.

Insert integrate-operator declarations when reasonable.

Export expression/free-variable-info and expression/size.

Add expression/free-variable-info and expression/size.

Fixup sequences, simplify some code, rewrite conditionals whose predicates are sequences.

Tidy up and simplify conditional/disjunction optimization.

Add sf:enable-safe-integration?

Tidy up.

Add a declaration.

Add expressions/equal?

Export sf:maximum-duplicate-expression-size and sf:enable-true-unspecific? to global.

Remove some debugging noise.

Merge branch 'master' of ssh://git.savannah.gnu.org/srv/git/mit-scheme

Fix typos in open-block analyzers.

Merge branch 'release-9.0'

Adjust for new location of "all.com" file.

Merge branch 'release-9.0'

Change script to work properly with distributed binary tars.

Clean out lib/lib dir.

Make sure band is saved in correct location.

Merge with release-9.0 branch.

Bump version number.

Update for release 9.0.

Merge branch 'release-9.0'

Update ref manual for release.

Implement quoting to enable use of colon in directory pathnames.

Bump version number to 9.0.1.

Disable --enable-host-scheme-test by default.

Expander for NOT.

Add sf:enable-rewrite-nested-conditionals?

Add sf:rewrite-disjunction-in-conditional.

Fixup disjunction integration.

Fixup conditional and disjunction construction.

Turn off sf:enable-true-unspecific?

Move EXPRESSION/UNSPECIFIC?, add EXPRESSION/PURE-TRUE? and EXPRESSION/PURE-FALSE?

Move several routines from object.scm to analyze.scm and rewrite using dispatch-vector mechanism.

Rename VARIABLE/FREE-IN-EXPRESSION? to EXPRESSION/FREE-VARIABLE?

Change FREE/EXPRESSION to EXPRESSION/FREE-VARIABLES.

Change file for package (scode-optimizer free)

Rename free.scm to analyze.scm before adding more stuff.

Implement quoting to enable use of colon in directory pathnames.

Fix typo in LENGTH=?.

Fix some typos in recent changes to SF.

Thanks, mejja.

Merge branch 'release-9.0'

Describe how to build a Windows executable installer.

Update for release 9.0.

Fix typos.

Do just one arch at a time.

More changes for new distrib scheme.

New script.

Update for release 9.0.

Updates for new binary distribution scheme.

Fix (CHAR-SET->REGEXP (CHAR-SET <char>)).

Factor LET binding in RE-QUOTE-STRING's definition to the top level.
Perhaps CHAR-SET:RE-SPECIAL ought to be exported.

Omit vestige of --enable-static-libs from microcode/configure.ac.

Write FOO, not SIGFOO, with `trap' in microcode/makegen/makeinit.sh.

Add code for rewriting disjunctions where the predicate is a conditional.

Move disjunction linearization, propagate conditional value in alternative branch.

Integrate GUARANTEE-STRING.

Move conditional and disjunction folding and inversion to subst.scm

Don't check untaken branches when checking for boolean expression.

Slightly smarter expansion for EQ? #F.

Export new bindings.

Add VARIABLE/FREE-IN-EXPRESSION?  Avoid collecting free variables from untaken branches.

Add expression/can-duplicate?

Add sf:enable-true-unspecific

Add some expression helpers.

Add GUARANTEE-INTEGRATION-INFO.

Add PP-EXPRESSION debugging utility.

Merge branch 'master' of ssh://git.savannah.gnu.org/srv/git/mit-scheme

Merge branch 'release-9.0'

Merge branch 'master' of ssh://git.savannah.gnu.org/srv/git/mit-scheme

Fix problem with re-reading microcode tables on disk-restore.

Add sanity checks and clarify error messages in various scripts.

Elide conditional canonicalization.

Elide double negatives in combinations.