| Commit message (Collapse) | Author | Age | Files | Lines |
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* Makefile, args.c, args.h, arith.c, arith.h, cadr.c, cadr.h, combi.c,
combi.h, configure, debug.c, debug.h, eval.c, eval.h, filter.c,
filter.h, ftw.c, ftw.h, gc.c, gc.h, glob.c, glob.h, hash.c, hash.h,
jmp.S, lib.c, lib.h, lisplib.c, lisplib.h, match.c, match.h, parser.c,
parser.h, parser.l, parser.y, rand.c, rand.h, regex.c, regex.h,
share/txr/stdlib/awk.tl, share/txr/stdlib/build.tl,
share/txr/stdlib/cadr.tl, share/txr/stdlib/conv.tl,
share/txr/stdlib/except.tl, share/txr/stdlib/hash.tl,
share/txr/stdlib/ifa.tl, share/txr/stdlib/path-test.tl,
share/txr/stdlib/place.tl, share/txr/stdlib/socket.tl,
share/txr/stdlib/struct.tl, share/txr/stdlib/termios.tl,
share/txr/stdlib/txr-case.tl, share/txr/stdlib/type.tl,
share/txr/stdlib/with-resources.tl, share/txr/stdlib/with-stream.tl,
share/txr/stdlib/yield.tl, signal.c, signal.h, socket.c, socket.h,
stream.c, stream.h, struct.c, struct.h, sysif.c, sysif.h, syslog.c,
syslog.h, termios.c, termios.h, txr.1, txr.c, txr.h, unwind.c,
unwind.h, utf8.c, utf8.h: Revert to verbatim 2-Clause BSD.
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* jmp.S (DEFUN): Separate definition for 64 bit Cygwin,
which doesn't use leading underscores and has an
unusual prologue.
(jmp_save, jmp_restore): Separately defined for 64 bit
Cygwin, due to use of Microsoft 64 bit calling conventions.
* signal.h (struct jmp): In x86-64 version, only on Cygwin,
new members: rsi and rdi. These registers are considered
nonvolatile and so are saved and restored by jmp_save and
jmp_restore.
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* jmp.S: Don't generate the .note.GNU-stack section
on MinGW or Cygwin either.
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jmp.S: check for __CYGWIN__ rather than __CYGWIN32__
for defining the DEFUN macro.
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Ever since jmp.S was added, the txr executable has been
building with a bit in the program header indicating that the
stack is to be executable.
* jmp.S: Define the .note.GNU-stack section to
tell the linker we don't need an executable stack.
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* LICENSE, METALICENSE, Makefile, args.c, args.h, arith.c,
arith.h, cadr.c, cadr.h, combi.c, combi.h, configure,
debug.c, debug.h, eval.c, eval.h, filter.c, filter.h, gc.c,
gc.h, glob.c, glob.h, hash.c, hash.h, jmp.S, lib.c, lib.h,
lisplib.c, lisplib.h, match.c, match.h, parser.c, parser.h,
parser.l, parser.y, rand.c, rand.h, regex.c, regex.h,
share/txr/stdlib/cadr.tl, share/txr/stdlib/except.tl,
share/txr/stdlib/hash.tl, share/txr/stdlib/ifa.tl,
share/txr/stdlib/path-test.tl, share/txr/stdlib/place.tl,
share/txr/stdlib/struct.tl, share/txr/stdlib/txr-case.tl,
share/txr/stdlib/type.tl, share/txr/stdlib/with-resources.tl,
share/txr/stdlib/with-stream.tl, share/txr/stdlib/yield.tl,
signal.c, signal.h, stream.c, stream.h, struct.c, struct.h,
sysif.c, sysif.h, syslog.c, syslog.h, txr.1, txr.c, txr.h,
unwind.c, unwind.h, utf8.c, utf8.h: Add 2016 copyright.
* linenoise/LICENSE, linenoise/linenoise.c,
linenoise/linenoise.h: Bump one principal author's copyright
from 2014 to 2015. The code is based on a snapshot of 2015
upstream work.
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* jmp.S (jmp_save, jmp_restore): Add PPC64 versions.
* signal.h (struct jmp): Add PPC64 version.
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TXR is moving to custom assembly-language routines.
This is mainly motivated by a very dubious thing done in the
GNU C Library setjmp and longjmp in the name of security.
Evidently, glibc's setjmp "mangles" certain pointer values
which are stored into the jmp_buf buffer. It's been that way
since 2005, evidently. This means that, firstly, all along,
the use of setjmp in gc.c to get registers into a buffer so
they can be scanned has not actually worked properly. More
importantly, this pointer mangling in setjmp and longjmp is
very hostile to a stack copying implementation of delimited
continuations. The reason is that continuations contain
jmp_buf buffers, which get relocated in the process of
capturing and reviving a continuation. Any pointers in a
jmp_buf which point into the captured stack segment have to be
fixed up to point into the relocated location. Mangled
pointers make this difficult, requiring hacks which are
specific to glibc and the machine architecture. We might as
well implement a clean, well-behaved setjmp and longjmp.
* Makefile (jmp.o): New object file.
(dbg/%.o, opt/%.o): New rules for .S prerequisites.
* args.c, arith.c, cadr.c, combi.c, cadr.c, combi.c, debug.c,
eval.c, filter.c, glob.c, hash.c, lib.c, match.c, parser.c,
rand.c, regex.c, signal.c, stream.c, struct.c, sysif.c,
syslog.c, txr.c, unwind.c, utf8.c: Removed <setjmp.h>
include.
* gc.c: Switch to struct jmp and jmp_save, instead
of jmp_buf and setjmp.
* jmp.S: New source file.
* signal.h (struct jmp): New struct type.
(jmp_save, jmp_restore): New function declarations
denoting assembly language routines in jmp.S.
(extended_jmp_buf): Uses struct jmp instead of
setjmp.
(extended_setjmp): Use jmp_save instead of setjmp.
(extended_longjmp): Use jmp_restore instead of
longjmp.
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