split fabs.c into hardfloat .S and softfloat .c as requested by joerg

branches: 1.25.4; 1.25.10;
Add PPC TLS support. Add -D_LIBC_SOURCE for tls.c and _lwp.c (powerpc)
so that __lwp_gettcb_fast and __lwp_settcb inlines are define.

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 frexp/ldexp/modf in the "compat" part (code is identical)
(These are the easy cases where no assembler implementations exist.)

*setjmp14 are not compat, plain setjmp/sigsetjmp are the compat versions.
Exchange the files.

Move PowerPC compat files from arch/powerpc to compat/arch/powerpc.

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: 1.19.6;
* 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.

s/!=/==/

The last fix wasn't quite right, but happened to work for me due
to stale dependencies...

Reported by Markus W Kilbinger.

Don't compile fp*.c if doing a soft-float build.

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).

Handle soft-float case, code from David Querbach of Real-Time Systems Inc.

branches: 1.7.6;
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.

add the ieeefp functions

Modify syncicache on PowerPC from an inline to a real function.
Support different cache line sizes with the same object code in userland.
While here, move the function to implementation name space.

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 frexp.c and modf.c.

New signal stuff for PowerPC.

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

Consistently pass 0 as first and ignored argument to sigprocmask in the
setjmp implementations.

NFCI.

Use END(foo) everywhere.
Make __cerror hidden.
Use non-PLT calls to __cerror.
Use assym.h when appropriate.
Use addi to adjust stack instead of loading it.
Add __RCSIDs
Force -D_NOREGNAMES for all .S files.
[this is all in preperation for secure plt support]

*setjmp14 are not compat, plain setjmp/sigsetjmp are the compat versions.
Exchange the files.

Move PowerPC compat files from arch/powerpc to compat/arch/powerpc.

Convert to use register prefixes. (0 -> %r0, etc.)

branches: 1.1.12; 1.1.14;
New signal stuff for PowerPC.

Consistently pass 0 as first and ignored argument to sigprocmask in the
setjmp implementations.

NFCI.

Use END(foo) everywhere.
Make __cerror hidden.
Use non-PLT calls to __cerror.
Use assym.h when appropriate.
Use addi to adjust stack instead of loading it.
Add __RCSIDs
Force -D_NOREGNAMES for all .S files.
[this is all in preperation for secure plt support]

*setjmp14 are not compat, plain setjmp/sigsetjmp are the compat versions.
Exchange the files.

Move PowerPC compat files from arch/powerpc to compat/arch/powerpc.

Convert to use register prefixes. (0 -> %r0, etc.)

branches: 1.1.12; 1.1.14;
New signal stuff for PowerPC.

Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.

branches: 1.8.8;
Turn on _UC_TLSBASE for sure in the same manner as other ports.
No functional changes since that flag is turned on via getcontext(2).

Make lint happy.
While here, make sure the top of stack is aligned properly.

branches: 1.6.4;
Add PPC TLS support. Add -D_LIBC_SOURCE for tls.c and _lwp.c (powerpc)
so that __lwp_gettcb_fast and __lwp_settcb inlines are define.

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: 1.4.40;
Add missing __RCSID()

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.

Use END(foo) everywhere.
Make __cerror hidden.
Use non-PLT calls to __cerror.
Use assym.h when appropriate.
Use addi to adjust stack instead of loading it.
Add __RCSIDs
Force -D_NOREGNAMES for all .S files.
[this is all in preperation for secure plt support]

Convert to use register prefixes. (0 -> %r0, etc.)

branches: 1.1.14; 1.1.16;
Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

Handle soft-float case, code from David Querbach of Real-Time Systems Inc.

branches: 1.2.12;
Remove long obsolete copyright (should have been done before initial import)

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

split fabs.c into hardfloat .S and softfloat .c as requested by joerg

branches: 1.4.44; 1.4.50;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

branches: 1.2.2;
Correct input and output of asm.

Handle soft-float case, code from David Querbach of Real-Time Systems Inc.

On ports without __HAVE_LONG_DOUBLE, make fabsl alias fabs.

For some reason, fabs lives in libc, not in libm, and our tests now
detect when fabs or fabsl is missing from libm. For those ports that
sometimes have long double and sometimes don't, make it conditional.

Still missing: fabs _and_ fabsl on ia64. Need help from an itanium
wizard! Other portmasters: Please take a look and see if I missed
any ports that might have long double where this alias will not work.

branches: 1.1.4; 1.1.8; 1.1.28; 1.1.30;
split fabs.c into hardfloat .S and softfloat .c as requested by joerg

no need to duplicate the generic fabs_ieee754.c here

split fabs.c into hardfloat .S and softfloat .c as requested by joerg

Call libc's fpgetround.

branches: 1.11.20;
Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Suppress a lint warning.

Do without stfiwx; per PEM32 Rev. 1 it's an optional part of the UISA,
and not implemented on the 601.

Handle soft-float case, from the arm flt_rounds.c.

branches: 1.4.10;
mark an asm statement volatile so it doesn't get optimized out

s/asm/__asm/

Need float.h for prototypes.

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

branches: 1.9.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.18;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Supress a few lint warnings. s/u_int64_t/uint64_t/

Rather than use magic values, include <powerpc/fpu.h> and use those
definitions to generate the magic bits.

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

branches: 1.2.2;
Add some casts to make lint shut up. Reviewed by christos.

add the ieeefp functions

Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

branches: 1.9.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.18;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Supress a few lint warnings. s/u_int64_t/uint64_t/

Rather than use magic values, include <powerpc/fpu.h> and use those
definitions to generate the magic bits.

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

branches: 1.2.2;
Add some casts to make lint shut up. Reviewed by christos.

add the ieeefp functions

Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

branches: 1.9.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.18;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Supress a few lint warnings. s/u_int64_t/uint64_t/

Rather than use magic values, include <powerpc/fpu.h> and use those
definitions to generate the magic bits.

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

branches: 1.2.2;
Add some casts to make lint shut up. Reviewed by christos.

add the ieeefp functions

have fpsetmask() change the FE0/FE1 MSR bits to precise mode if any
FP exceptions are enabled. fix the kernel emulation of mfmsr and mtmsr
to use the correct opcodes for these instructions. ignore PSL_FE
(the FP enable bit) in the MSR that a user program tries to set,
since it will naturally be set for FP-using processes but
we can't let the user process manage that bit.

branches: 1.10.24; 1.10.28;
Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

branches: 1.9.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.18;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Lint cleanup. s/u_int64_t/uint64_t

Rather than use magic values, include <powerpc/fpu.h> and use those
definitions to generate the magic bits.

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

branches: 1.2.2;
Add some casts to make lint shut up. Reviewed by christos.

add the ieeefp functions

Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

branches: 1.9.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.18;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Lint cleanup. s/u_int64_t/uint64_t

Rather than use magic values, include <powerpc/fpu.h> and use those
definitions to generate the magic bits.

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

branches: 1.2.2;
Add some casts to make lint shut up. Reviewed by christos.

add the ieeefp functions

Don't use "f" with non-fp types. Use a union to go between
double and uint64_t. Makes clang happy.

branches: 1.10.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.9.18;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

Add missing __RCSID()

Update FPSCR_FX consistently per the Programming Environment Manual. So
if any sticky bit is set, FPSCR_FX should be set. If no sticky bits are
set, then FPSCR_FX should be clear.

Deal with the way FP_X_INV works. That maps to FPSCR_VX. However FPSCR_VX
is not a sticky, it's actually an inclusive OR of 9 stick bits. So when
FP_X_INV is cleared, we need to clear all of those bits. When FP_X_INV is
set, we set all of them.

Rather than use magic values, include <powerpc/fpu.h> and use those
definitions to generate the magic bits.

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

branches: 1.2.2;
Add some casts to make lint shut up. Reviewed by christos.

add the ieeefp functions

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: 1.4.10;
Trivial KNF.

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

Use ieee.h structs and macros.

Add frexp.c and modf.c.

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

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

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

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: 1.6.6;
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 RCSID's

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

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: 1.5.6;
Delint.

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

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

Fix RCSID's
Add missing math.h include

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

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).

fix for -Wshadow

branches: 1.9.10;
Another microoptimization. Take advantage of the addition already having set
the flags for the <=0 comparison.

Reuse the trick of loading 0.0 (rather than 1.0) and then modifying the
exponent. It's a bit faster on some machines.

Remove more unused mulexp variables.

ldexp(denormal, exp>1023) would generate the wrong result in all non-overflow
cases. Totally rework this code to fix this bug *and* make it faster.

Don't ever return -0.0.

Minor style change.

Just some minor cleanup.

Fix RCSID's
Add missing math.h include

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

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

branches: 1.3.30;
Update to use symbolic register names.

Merge the nathanw_sa branch.

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

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: 1.4.2;
De-lint. Reviewed by christos.

fix up NetBSD RCS Ids to match the standard, and the leading comment as
to match as well. No functional changes.

branches: 1.2.2;
Fix doubled 'the's.

Add frexp.c and modf.c.

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.

Mark _resumecontext as dead. ANSIfy all declarations for it.

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

branches: 1.3.10;
Sync all resumecontext.c versions with the changes originally made
by Matthias Drochner to i386 and alpha:

-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.

branches: 1.2.16;
Merge the nathanw_sa branch.

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

*setjmp14 are not compat, plain setjmp/sigsetjmp are the compat versions.
Exchange the files.

Convert to use register prefixes. (0 -> %r0, etc.)

branches: 1.3.12; 1.3.14;
New signal stuff for PowerPC.

Remove long obsolete copyright (should have been done before initial import)

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

*setjmp14 are not compat, plain setjmp/sigsetjmp are the compat versions.
Exchange the files.

Add a missing register prefix, noted by Makoto Fujiwara on the port-macppc
mailing list.

Convert to use register prefixes. (0 -> %r0, etc.)

branches: 1.4.12; 1.4.14;
New signal stuff for PowerPC.

Add #include <sys/syscall.h> for "SYS_sigprocmask".

Remove long obsolete copyright (should have been done before initial import)

Architecture-specific bits for libc on the PowerPC. From Wolfgang
Solfrank <ws@tools.de>

PIC code clobbers %r30 so we need to update the saved oucp with
caller's %r30 manually. Makes old context happy when it needs to do
more function calls after restore.

branches: 1.7.4; 1.7.18;
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: 1.6.6; 1.6.8; 1.6.12;
Switch to the PIC_GOTSETUP/PIC_TOCSETUP macros for PIC code. Now libc
will be built to use secureplt by default.

Use END(foo) everywhere.
Make __cerror hidden.
Use non-PLT calls to __cerror.
Use assym.h when appropriate.
Use addi to adjust stack instead of loading it.
Add __RCSIDs
Force -D_NOREGNAMES for all .S files.
[this is all in preperation for secure plt support]

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

branches: 1.3.30;
Convert to use register prefixes.

Merge the nathanw_sa branch.

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

When compiling for _STANDALONE, omit a bunch of headers which aren't really
needed and which trigger build problems.

(These two files should probably be unified and put under common/...)

branches: 1.14.10; 1.14.16;
__asm__ -> __asm

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

export size_t __getcachelinesize(void) for memset()

Need <stdlib.h> for abort() prototype.

Add sync before isync since the MPC74xx require it.

Use size_t in prototype (so this will be LP64 clean for PPC64 someday).
Calculate len separately for icache & dcache in case each has different
cacheline widths. Make the code for both loops the same except for the
dcbst/icbi. Deal with sizes >=2GB properly (like that'll happen but ...)

make compile with _STANDALONE

Remove leftover debug code. Oops.

Use new CPU_CACHEINFO sysctl to get more detailed information about
cache layout.

Ansi'fy. (to make this compile under -Wstrict-prototypes)

branches: 1.4.2;
delint (variable is only used for size, so make if size_t instead of int).

sync with libkern version; <vm/vm.h> -> <uvm/uvm_extern.h>

* Add getcachelinesize() prototype.
* Make this compile with -D_STANDALONE.

Modify syncicache on PowerPC from an inline to a real function.
Support different cache line sizes with the same object code in userland.
While here, move the function to implementation name space.