Unify signbitl implementations.
(Unclear why they were different, it was only the comments that
differed)

Add a comment describing why the generic version works for both 80-bit
and 128-bit double.

branches: 1.29.16;
Don't include sigtramp or foocontext routines in rumprun mode. They won't
work (since a rump kernel does not provide NetBSD _lwp syscalls nor
signals), but they cause unwanted symbols to be pulled in when the
resulting libc is linked.

problem reported by Robert Gifford on rumpkernel-users

Remove "objects built from C sources" comments. Everyone can see
they're built from C sources because the source files end in .c (???)

add fpgetprec/fpsetprec

Rename ${SRCS.{alpha,arm,...}.gen} to ${LSRCS.{alpha,arm,...}.gen} because
they ended up in ${LSRCS}, not ${SRCS}. ${SRCS.*} namespace will be used
for more useful things. No functional changes intended.

Build just the compatibility versions of frexp()/ldexp()/modf(), the
real implementation is in libm.

restore missing .S sources that disappeared in the last commit.

_setjmp and _longjmp are not compat functions. Noticed by Havard Eidnes

compat core reorg.

Push back the descriptions of NaN formats, and descriptions of the
distinction between signalling NaNs and quiet NaNs back into the
machine-dependent headers; treat the implementation of __nanf in the
same spirit.

IEEE 754 leaves the distinction between signalling NaNs and quiet NANs
to the implementation, and unlike our headers used to suggest they're
not identical in the interpretation of the fraction's MSb; in due
course, make those of hppa, mips, sh3, and sh5 reflect reality.

branches: 1.20.6;
* Turn isinf(3) and isnan(3) into C99-style macros.
* Make it possible for ports to override these (i.e., VAX).
* Remove isnanl(), which was internal to libc only.

Add C99 fpclassify(), isfinite(), isnormal(), and signbit() macros.

Add __infinityf and __infinityl, float respectively long double analogs
of __infinity.

* Since there is no single portable IEEE 754 format for a long double,
keep a common implementation of isinfl() and isnanl() to be used by
platforms where `long double' == `double'; move others into
machine-dependent code.
* In due course, consider __VFP_FP__ on arm.

Rework how dependency generation is performed:

* DPSRCS contains extra dependencies, but is _NOT_ added to CLEANFILES.
This is a change of behaviour. If a Makefile wants the clean semantics
it must specifically append to CLEANFILES.
Resolves PR toolchain/5204.

* To recap: .d (depend) files are generated for all files in SRCS and DPSRCS
that have a suffix of: .c .m .s .S .C .cc .cpp .cxx

* If YHEADER is set, automatically add the .y->.h to DPSRCS & CLEANFILES

* Ensure that ${OBJS} ${POBJS} ${LOBJS} ${SOBJS} *.d depend upon ${DPSRCS}

* Deprecate the (short lived) DEPENDSRCS


Update the various Makefiles to these new semantics; generally either
adding to CLEANFILES (because DPSRCS doesn't do that anymore), or replacing
specific .o dependencies with DPSRCS entries.

Tested with "make -j 8 distribution" and "make distribution".

Build _isinfl() and _isnanl().

Rename ieee754_function.c to function_ieee754.c, following the convention
used in exec_format.c, loadfile_format.c, subsys_machdep.c etc.
Per discussion with Christos.

Merge the nathanw_sa branch.

Clean up some rampant code duplication wrt ieee number handling:
- Add alignment-safe double and float unions.
- Use the above for the __infinity and __nan constants on all
architectures that use the standard ieee754 representation of
those constants.
- Add a single copy of various ieee754 math functions (frexp, isinf,
isnan, ldexp and modf) that had numerous duplicates among the
arch-specific directories.
- Use the above functions on all architectures where the generic C
versions where used. Architectures that had local assembly
routines are untouched (for those functions only).

branches: 1.11.2;
Add __syscall.S back to sys/Makefile.inc. Remove from arch/i386/gen/
Makefile.inc. If your architecture doesn't have __syscall.S, *add it*.

Add __syscall.S to arch/i386/gen/Makefile.inc along with all the other
sys .S files. Remove from arch/i386/Makefile.inc since it doesn't belong
there.

C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
a single-precision quiet NaN; only to be defined on platforms that do support
this value.

Separate isnan() into a separate module, and make isinf()/isnan() use ieee.h.

Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.

Add setjmp versioned bits (from Jason).
XXX: Someone needs to make setjmp/longjmp save and restore the signal stack!

lint stubs for assembly routines.

branches: 1.4.10;
Add fpset{mask,round,sticky}().

Added flt_rounds, fpget{round,mask,sticky}.

don't forget inifinity.c

need these for new gen/Makefile

compat core reorg.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

For don't mess up the stack before calling syscall when using PIC_PROLOGUE.

Amend for the PLT fixes, things broke last night with the changes to SYS.h
and cerror.S. In particular, the syscalls in the files committed below were
broken.

Add setjmp versioned bits (from Jason).
XXX: Someone needs to make setjmp/longjmp save and restore the signal stack!

compat core reorg.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Don't use 1: label; it is uses by the PIC_PROLOGUE macro and we jmp in the
wrong place!

For don't mess up the stack before calling syscall when using PIC_PROLOGUE.

Amend for the PLT fixes, things broke last night with the changes to SYS.h
and cerror.S. In particular, the syscalls in the files committed below were
broken.

Add setjmp versioned bits (from Jason).
XXX: Someone needs to make setjmp/longjmp save and restore the signal stack!

branches: 1.1.2;
file _context_u.S was initially added on branch nathanw_sa.

Trailing whitespace

Align the stack to a 16-byte boundary on LWP creation.
This is more than required by the ABI, but it makes programs using SSE
in a thread work without extra compiler flags or performance hit.

branches: 1.7.4;
Allow storing and receiving the LWP private pointer via ucontext_t
on all platforms except VAX and IA64. Add fast access via register for
AMD64, i386 and SH3 ports. Use this fast access in libpthread to replace
the stack based pthread_self(). Implement skeleton support for Alpha,
HPPA, PowerPC, SPARC and SPARC64, but leave it disabled.

Ports that support this feature provide __HAVE____LWP_GETPRIVATE_FAST in
machine/types.h and a corresponding __lwp_getprivate_fast in
machine/mcontext.h.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

branches: 1.6.8; 1.6.20;
Remove clause 3 and 4 from TNF licenses

branches: 1.5.18;
Add missing __RCSID()

Delint a use of uintptr_t; not strictly necessary with -current lint(1),
but consistent with makecontext.c.

Make sure we reference getcontext() by its internal name.

Merge the nathanw_sa branch.

branches: 1.1.2;
file _lwp.c was initially added on branch nathanw_sa.

Put missing END() markers to set ELF symbol size.

branches: 1.8.50; 1.8.62;
_setjmp and _longjmp are not compat functions. Noticed by Havard Eidnes

This is not used anymore; pointed out by uwe.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

Replaced instructions with immediate operands with compatible alternatives
saving a few bytes while the cycle count remains the same --- could
actually be faster, depending on the cache, prefetch queue, etc.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

Replaced instructions with immediate operands with compatible alternatives
saving a few bytes while the cycle count remains the same --- could
actually be faster, depending on the cache, prefetch queue, etc.

make an arch directory in libc, and move all machine dirs into it

Put missing END() markers to set ELF symbol size.

branches: 1.8.62; 1.8.74;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Fix minor syntax warnings.

fix a grammatical error error

branches: 1.5.14;
RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Pedanticism.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Use reach-over sources from common/lib/libc

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Adjust to not use ALTENTRY().

Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.

Use reach-over sources from common/lib/libc

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Adjust to not use ALTENTRY().

Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.

Put missing END() markers to set ELF symbol size.

branches: 1.6.62; 1.6.74;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Put missing END() markers to set ELF symbol size.

branches: 1.5.62; 1.5.74;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Put missing END() markers to set ELF symbol size.

branches: 1.6.62; 1.6.74;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Put missing END() markers to set ELF symbol size.

branches: 1.13.2;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.12.4; 1.12.10;
Use a plain float constant, no need to deal with messy 0r prefix

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Don't use 1: label; it is uses by the PIC_PROLOGUE macro and we jmp in the
wrong place!

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Remove #include "SYS.h"; it is not needed (by normal assembly functions)

Use <machine/asm.h> instead of DEFS.h

Pedanticism.

Remove spurious PIC_EPILOGUE and PIC_GOTOFF macros.

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

So many files in arch/i386 have been changed I might as well run my
remove unecessary trailing whitespace script.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

So many files in arch/i386 have been changed I might as well run my
remove unecessary trailing whitespace script.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Put missing END() markers to set ELF symbol size.

branches: 1.9.8; 1.9.18;
make rounding work

even shorter

add a simpler version

Use _ALIGN_TEXT from <machine/asm.h>.

RCS Id Police.

Make PIC safe.

Another optimization.

Optimize.

Added flt_rounds, fpget{round,mask,sticky}.

branches: 1.3.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.10;
ext_int bit is no more.

branches: 1.1.16;
C99 7.12.3.1: add IEEE library portions of fpclassify. Don't build these
yet as the VAX implementation is still subject to discussion.

Put missing END() markers to set ELF symbol size.

branches: 1.4.64; 1.4.76;
Add internal names for fp{get,set}{mask,round,sticky}(), and
externally-visible weak aliases for the internal names.

branches: 1.3.12;
RCS Id Police.

Another optimization.

Added flt_rounds, fpget{round,mask,sticky}.

Put missing END() markers to set ELF symbol size.

branches: 1.1.10; 1.1.20;
add fpgetprec/fpsetprec

Put missing END() markers to set ELF symbol size.

branches: 1.6.8; 1.6.18;
make rounding work

Add internal names for fp{get,set}{mask,round,sticky}(), and
externally-visible weak aliases for the internal names.

branches: 1.4.12;
RCS Id Police.

Add fpset{mask,round,sticky}().

Another optimization.

Added flt_rounds, fpget{round,mask,sticky}.

Put missing END() markers to set ELF symbol size.

branches: 1.6.64; 1.6.76;
Add internal names for fp{get,set}{mask,round,sticky}(), and
externally-visible weak aliases for the internal names.

branches: 1.5.12;
RCS Id Police.

Reverse sense of exception bits.

Another optimization.

ENTRY(fpgetmask) -> ENTRY(fpgetsticky)

Added flt_rounds, fpget{round,mask,sticky}.

Put missing END() markers to set ELF symbol size.

branches: 1.4.64; 1.4.76;
Add internal names for fp{get,set}{mask,round,sticky}(), and
externally-visible weak aliases for the internal names.

branches: 1.3.12;
RCS Id Police.

Stylistic change to match fpsetsticky().

Add fpset{mask,round,sticky}().

Put missing END() markers to set ELF symbol size.

branches: 1.1.10; 1.1.20;
add fpgetprec/fpsetprec

Put missing END() markers to set ELF symbol size.

branches: 1.5.8; 1.5.18;
don't use %edi!

make rounding work

Add internal names for fp{get,set}{mask,round,sticky}(), and
externally-visible weak aliases for the internal names.

branches: 1.2.12;
RCS Id Police.

Add fpset{mask,round,sticky}().

Put missing END() markers to set ELF symbol size.

branches: 1.6.64; 1.6.76;
Add internal names for fp{get,set}{mask,round,sticky}(), and
externally-visible weak aliases for the internal names.

branches: 1.5.12;
RCS Id Police.

Reverse sense of exception bits.

Oops; need to use fnstenv/fldenv for this.

Fix typo.

Add fpset{mask,round,sticky}().

Clean up some rampant code duplication wrt ieee number handling:
- Add alignment-safe double and float unions.
- Use the above for the __infinity and __nan constants on all
architectures that use the standard ieee754 representation of
those constants.
- Add a single copy of various ieee754 math functions (frexp, isinf,
isnan, ldexp and modf) that had numerous duplicates among the
arch-specific directories.
- Use the above functions on all architectures where the generic C
versions where used. Architectures that had local assembly
routines are untouched (for those functions only).

branches: 1.5.10;
Trivial KNF.

Make the C version of frexp() consitent across platforms, and handle the
Inf/NaN case.

Use ieee.h structs and macros.

Fix RCSID's

make an arch directory in libc, and move all machine dirs into it

Clean up some rampant code duplication wrt ieee number handling:
- Add alignment-safe double and float unions.
- Use the above for the __infinity and __nan constants on all
architectures that use the standard ieee754 representation of
those constants.
- Add a single copy of various ieee754 math functions (frexp, isinf,
isnan, ldexp and modf) that had numerous duplicates among the
arch-specific directories.
- Use the above functions on all architectures where the generic C
versions where used. Architectures that had local assembly
routines are untouched (for those functions only).

branches: 1.5.2;
check LIBC_SCCS

delint

const poisoning.

Fix RCSID's

make an arch directory in libc, and move all machine dirs into it

make sure the infinity returned by HUGE_VALL has the "implicit"
bit set, otherwise it is invalid
This code is unlikely to be hit because gcc (and clang) use
their builtins for these special values.

branches: 1.3.2;
fix long double infinity.

Add missing __RCSID()

Add __infinityf and __infinityl, float respectively long double analogs
of __infinity.

branches: 1.3.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.10;
ext_int bit is no more.

branches: 1.1.16;
C99 7.12.3.2: add library portions of isfinite, but don't build these just
yet.

Clean up some rampant code duplication wrt ieee number handling:
- Add alignment-safe double and float unions.
- Use the above for the __infinity and __nan constants on all
architectures that use the standard ieee754 representation of
those constants.
- Add a single copy of various ieee754 math functions (frexp, isinf,
isnan, ldexp and modf) that had numerous duplicates among the
arch-specific directories.
- Use the above functions on all architectures where the generic C
versions where used. Architectures that had local assembly
routines are untouched (for those functions only).

branches: 1.7.6;
Delint.

Separate isnan() into a separate module, and make isinf()/isnan() use ieee.h.

delint

Need internal names for isinf() and isnan().

Add missing math.h include
Fix RCSIDs

Add explicit return type

branches: 1.1.4;
make an arch directory in libc, and move all machine dirs into it

since the int bit is merged, do the explicit math.

branches: 1.5.16;
* Turn isinf(3) and isnan(3) into C99-style macros.
* Make it possible for ports to override these (i.e., VAX).
* Remove isnanl(), which was internal to libc only.

Err, rename some members added in previous to make them reflect their
semantics better.

Retire local union { floating-type; struct ieee_prec; } in favor of those
available from <machine/ieee.h>

Update to account for separate handling of the explicit integer bit;
simplifies a little.

* Since there is no single portable IEEE 754 format for a long double,
keep a common implementation of isinfl() and isnanl() to be used by
platforms where `long double' == `double'; move others into
machine-dependent code.
* In due course, consider __VFP_FP__ on arm.

Clean up some rampant code duplication wrt ieee number handling:
- Add alignment-safe double and float unions.
- Use the above for the __infinity and __nan constants on all
architectures that use the standard ieee754 representation of
those constants.
- Add a single copy of various ieee754 math functions (frexp, isinf,
isnan, ldexp and modf) that had numerous duplicates among the
arch-specific directories.
- Use the above functions on all architectures where the generic C
versions where used. Architectures that had local assembly
routines are untouched (for those functions only).

branches: 1.2.6;
Delint.

Separate isnan() into a separate module, and make isinf()/isnan() use ieee.h.

Revert previous and make frach be 0xc0000000 for NAN's generated by strtold()
as suggested by tron.

Make NAN tests consistent with other platforms and FreeBSD.

branches: 1.6.34;
since the int bit is merged, do the explicit math.

branches: 1.5.16;
* Turn isinf(3) and isnan(3) into C99-style macros.
* Make it possible for ports to override these (i.e., VAX).
* Remove isnanl(), which was internal to libc only.

Err, rename some members added in previous to make them reflect their
semantics better.

Retire local union { floating-type; struct ieee_prec; } in favor of those
available from <machine/ieee.h>

Update to account for separate handling of the explicit integer bit;
simplifies a little.

* Since there is no single portable IEEE 754 format for a long double,
keep a common implementation of isinfl() and isnanl() to be used by
platforms where `long double' == `double'; move others into
machine-dependent code.
* In due course, consider __VFP_FP__ on arm.

Build just the compatibility versions of frexp()/ldexp()/modf(), the
real implementation is in libm.

fix WARNS=2 (-Wshadow) warnings

branches: 1.6.12;
Just some minor cleanup.

Assign my copyrights to TNF.

Add missing math.h include
Fix RCSIDs

__asm rather than asm, for lint

branches: 1.2.2;
Remove extra "u" constraint that caused gcc 2.6.3 not to compile this file.
Note that gcc 2.4.5, the compiler we are currently using, still compiles it
correctly after this change.

make an arch directory in libc, and move all machine dirs into it

branches: 1.4.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.3.18;
in makecontext(), sp is unsigned * so don't assign signed *'s to it.

Merge the nathanw_sa branch.

branches: 1.1.2;
file makecontext.c was initially added on branch nathanw_sa.

Build just the compatibility versions of frexp()/ldexp()/modf(), the
real implementation is in libm.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Pedanticism.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Make NAN a compile time constant (with help from the compiler). Suggested
by krister. Fixes PR 40695.
Make references to the old construct (which we can't remove for binary
compatibility reasons) emit a linker warning.

branches: 1.3.2; 1.3.32;
Push back the descriptions of NaN formats, and descriptions of the
distinction between signalling NaNs and quiet NaNs back into the
machine-dependent headers; treat the implementation of __nanf in the
same spirit.

IEEE 754 leaves the distinction between signalling NaNs and quiet NANs
to the implementation, and unlike our headers used to suggest they're
not identical in the interpretation of the fraction's MSb; in due
course, make those of hppa, mips, sh3, and sh5 reflect reality.

Clean up some rampant code duplication wrt ieee number handling:
- Add alignment-safe double and float unions.
- Use the above for the __infinity and __nan constants on all
architectures that use the standard ieee754 representation of
those constants.
- Add a single copy of various ieee754 math functions (frexp, isinf,
isnan, ldexp and modf) that had numerous duplicates among the
arch-specific directories.
- Use the above functions on all architectures where the generic C
versions where used. Architectures that had local assembly
routines are untouched (for those functions only).

branches: 1.1.6;
C99: Define a NAN macro in <math.h> which evaulates to a constant expression of
a single-precision quiet NaN; only to be defined on platforms that do support
this value.

libc/i386: Omit needless __PIC__ conditionals.

No binary change.

PR lib/59391: unnecessary __PIC__ conditionals clutter .S files

branches: 1.8.36;
Put missing END() markers to set ELF symbol size.

branches: 1.7.2;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.6.4; 1.6.8; 1.6.28;
Remove clause 3 and 4 from TNF licenses

branches: 1.5.16;
-check for a NULL uc_link before calling setcontext(2); do a real exit(3)
instead with exit handlers and all that
-If setcontext(2) returns (which it shouldn't), do an _exit(-1) rather
than relying on a sensible return value to use as exit code. Makes
it less likely that an ucontext corruption goes unnoticed.

Update stack frame allocation for XMM state having been added to
mcontext_t; spotted by Frank van der Linden.
While here, also align the on-stack ucontext as required.

Fix comment that wasn't closed because of a typo (but harmless, since followed
by another comment).

Merge the nathanw_sa branch.

branches: 1.1.2;
file resumecontext.S was initially added on branch nathanw_sa.

libc/i386: Omit needless __PIC__ conditionals.

No binary change.

PR lib/59391: unnecessary __PIC__ conditionals clutter .S files

branches: 1.18.2;
i386 longjmp: Restore stack first, then signal mask.

Otherwise, a pending signal may be delivered on the wrong stack when
we restore the signal mask.

While here:

- Tidy the code a little bit.
- Sprinkle comments to explain what's going on.
- Use forward branches for statically predicted not-taken.
=> val==0 is unlikely in longjmp

PR lib/57946

branches: 1.17.26; 1.17.34;
Fix previous.

Put missing END() markers to set ELF symbol size.

branches: 1.15.2;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.14.44; 1.14.50;
compat core reorg.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

For don't mess up the stack before calling syscall when using PIC_PROLOGUE.

Amend for the PLT fixes, things broke last night with the changes to SYS.h
and cerror.S. In particular, the syscalls in the files committed below were
broken.

Generate C labels with _C_LABEL().

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Remove #include "SYS.h"; it is not needed (by normal assembly functions)

Use <machine/asm.h> instead of DEFS.h

Replaced pops with adds.

Pedanticism.

So many files in arch/i386 have been changed I might as well run my
remove unecessary trailing whitespace script.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

Replaced instructions with immediate operands with compatible alternatives
saving a few bytes while the cycle count remains the same --- could
actually be faster, depending on the cache, prefetch queue, etc.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

So many files in arch/i386 have been changed I might as well run my
remove unecessary trailing whitespace script.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

Replaced instructions with immediate operands with compatible alternatives
saving a few bytes while the cycle count remains the same --- could
actually be faster, depending on the cache, prefetch queue, etc.

make an arch directory in libc, and move all machine dirs into it

Unify signbitl implementations.
(Unclear why they were different, it was only the comments that
differed)

Add a comment describing why the generic version works for both 80-bit
and 128-bit double.

branches: 1.2.8; 1.2.64;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.30;
Add C99 fpclassify(), isfinite(), isnormal(), and signbit() macros.

libc/i386: Omit needless __PIC__ conditionals.

No binary change.

PR lib/59391: unnecessary __PIC__ conditionals clutter .S files

branches: 1.19.2;
i386 longjmp: Restore stack first, then signal mask.

Otherwise, a pending signal may be delivered on the wrong stack when
we restore the signal mask.

While here:

- Tidy the code a little bit.
- Sprinkle comments to explain what's going on.
- Use forward branches for statically predicted not-taken.
=> val==0 is unlikely in longjmp

PR lib/57946

branches: 1.18.26; 1.18.34;
Put missing END() markers to set ELF symbol size.

branches: 1.17.2;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.16.44; 1.16.50;
compat core reorg.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Don't use 1: label; it is uses by the PIC_PROLOGUE macro and we jmp in the
wrong place!

For don't mess up the stack before calling syscall when using PIC_PROLOGUE.

Amend for the PLT fixes, things broke last night with the changes to SYS.h
and cerror.S. In particular, the syscalls in the files committed below were
broken.

Generate C labels with _C_LABEL().

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Remove #include "SYS.h"; it is not needed (by normal assembly functions)

Use <machine/asm.h> instead of DEFS.h

Exchange offsets of "saved signal mask" and "signal mask saved" so
that the layout of sigjmp_bufs and jmp_bufs are the same (except
for the "signal mask saved" appended to the end).

Pedanticism.

Use PIC_PLT macro with the function calls (as was done with setjmp()).

So many files in arch/i386 have been changed I might as well run my
remove unecessary trailing whitespace script.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

Replaced instructions with immediate operands with compatible alternatives
saving a few bytes while the cycle count remains the same --- could
actually be faster, depending on the cache, prefetch queue, etc.

sigsetjmp() for the i386.

Clean up deleted files.

Use PIC_PLT macro with the function calls (as was done with setjmp()).

So many files in arch/i386 have been changed I might as well run my
remove unecessary trailing whitespace script.

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

Replaced instructions with immediate operands with compatible alternatives
saving a few bytes while the cycle count remains the same --- could
actually be faster, depending on the cache, prefetch queue, etc.

sigsetjmp() for the i386.

libc/i386: Omit needless __PIC__ conditionals.

No binary change.

PR lib/59391: unnecessary __PIC__ conditionals clutter .S files

branches: 1.8.36;
Put missing END() markers to set ELF symbol size.

branches: 1.7.2;
Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

branches: 1.6.4; 1.6.8; 1.6.28;
Remove clause 3 and 4 from TNF licenses

branches: 1.5.30;
Make sure we reference getcontext() by its internal name.

Fix stack pointer fixup of oucp (a relict from times when this
was implemented entirely different, and then bit rot commenced).

Fix wrong %esp fixup.

Merge the nathanw_sa branch.

branches: 1.1.2;
file swapcontext.S was initially added on branch nathanw_sa.

Put missing END() markers to set ELF symbol size.

branches: 1.6.62; 1.6.74;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

RCSID fixes: Always use the NetBSD rcsid and the macro RCSID() defined in
<machine/asm.h>; Also syscalls should be protected using the SYSLIBC_SCCS
define not LIBC_SCCS

Use <machine/asm.h> instead of DEFS.h

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it

Clean up deleted files.

Gcc helper functions should still use the ENTRY() macro so they will be
show up in profiled code. (The gcc helper functions in the other ports
do this allready).

Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.

make an arch directory in libc, and move all machine dirs into it