Commit Graph

180 Commits

Author SHA1 Message Date
Chris Metcalf
c10f7382a3 tile: update libm-test-ulps for new tests 2012-11-20 15:06:38 -05:00
Chris Metcalf
73deba6d3c tile: Fix __bswap_64 return type in tile bits/byteswap.h 2012-11-20 15:05:59 -05:00
Chris Metcalf
3d45177146 tile: remove redundant defines of libc_fetestexcept, etc. in s_fma.c 2012-11-20 15:05:32 -05:00
Andreas Schwab
615f651b7e m68k: Remove indirection through weak_aliasx 2012-11-20 21:00:09 +01:00
Joseph Myers
f59cba71d8 Use parentheses around MIPS syscall macro arguments. 2012-11-20 02:45:45 +00:00
Joseph Myers
aa099ade81 Fix int-to-pointer-cast warnings for MIPS. 2012-11-20 02:40:12 +00:00
Joseph Myers
bd077d205a Fix warnings from aborting MIPS atomic macros. 2012-11-20 00:56:29 +00:00
Joseph Myers
c9c253d372 Fix unused-variable warnings from MIPS RESOLVE_GOTSYM macro. 2012-11-20 00:00:35 +00:00
Joseph Myers
6eb43a28af Fix unused variable warnings from MIPS syscall macros. 2012-11-19 23:08:27 +00:00
Marcus Shawcroft
a6d9783fe7 AArch64: Adding optimized maths functions. 2012-11-19 15:15:18 +00:00
Carlos O'Donell
6e63f4ff60 hppa: Mark __pthread_once as a hidden def. 2012-11-19 00:55:04 -05:00
Carlos O'Donell
da66ca0fc0 hppa: Fix fesetenv for FE_DFL_ENV.
Switching back to FE_DFL_ENV should reset the FPU to the state
as it was at the start of the program.
2012-11-19 00:44:00 -05:00
Carlos O'Donell
886ce148c0 hppa: Implement get-rounding-mode.h
Implement get_rounding_mode using the new fpu_control.h
support. Use get_rounding_mode from fegetround.
2012-11-19 00:40:05 -05:00
Carlos O'Donell
030c5d66b8 hppa: Implement fpu_control.h.
The HP-PARISC processor has full IEEE-754 support
and we implement all of fpu_control.h.
2012-11-19 00:37:56 -05:00
Carlos O'Donell
0d6bed7150 hppa: Add ____longjmp_check C implementation. 2012-11-19 00:36:08 -05:00
Carlos O'Donell
320194d5b9 hppa: Implement __longjmp_chk.
Implement longjmp and the chk variant in C.
2012-11-19 00:28:30 -05:00
Andreas Schwab
67f2b51c62 m68k: fix cancellable syscall with 5 or 6 arguments 2012-11-18 01:22:38 +01:00
Andreas Schwab
e510ab5eff m68k: define ELF_MACHINE_RUNTIME_FIXUP_PARAMS 2012-11-18 01:22:37 +01:00
Andreas Schwab
43b13a23e0 m68k: update libm test ULPs 2012-11-18 01:22:36 +01:00
Andreas Schwab
05860e4b07 m68k: define lll_futex_timed_wait_bitset 2012-11-18 01:22:35 +01:00
Joseph Myers
018f9a78d3 Fix "set but not used" warnings from MIPS bits/atomic.h. 2012-11-17 03:35:27 +00:00
Marcus Shawcroft
f507f7d598 Fix thumb2 build breakage in libcrypt 2012-11-14 23:06:40 +00:00
Marcus Shawcroft
554066b83b AArch64 Port 2012-11-09 17:54:04 +00:00
Chris Metcalf
fdf689a977 tile: use memcpy in memmove when possible 2012-11-06 22:19:31 -05:00
Maxim Kuvyrkov
19218757e6 Use memcpy in memmove when possible 2012-11-06 17:47:55 -08:00
Chris Metcalf
351dc60c55 tile: use atomic op to unlock pthread_spinlock_t
Atomic ops are issued directly from the core, rather than
potentially sitting in the write buffer, so can improve the
performance of other waiters.  In addition, if we didn't end
up pulling a copy of the cache line where the lock is into cache,
by using an atomic op we don't have to acquire the cache line
before we can unlock.
2012-11-06 09:50:47 -05:00
Chris Metcalf
a0bce338e8 Make ieee754 fma tolerate architectures without exception support. 2012-11-06 09:48:53 -05:00
Chris Metcalf
fedff58953 tile: support very large shared objects
With gcc 4.8 tilegx has support for -mcmodel=large, to tolerate very
large shared objects.  This option changes the compiler output to
not include direct jump instructions, which have a range of only
2^30, i.e +/- 512MB.  Instead the compiler marshalls the target PCs
into registers and then uses jump- or call-to-register instructions.

For glibc, the upshot is that we need to arrange for a few functions
to tolerate the possibility of a large range between the PC and
the target.  In particular, the crti.S and start.S code needs
to be able to reach from .init to the PLT, as does gmon-start.c.
The elf-init.c code has the reverse problem, needing to call from
libc_nonshared.a (linked at the end of shared objects) back to the
_init section at the beginning.

No other functions in *_nonshared.a need to be built this way, as
they only call the PLT (or potentially each other), but all of that
code is linked at the very end of the shared object.

We don't build the standard -static archives with this option as the
performance cost is high enough and the use case is rare enough that
it doesn't seem worthwhile.  Instead, we would encourage developers
who need the -static model with huge executables to build a private
copy of glibc and configure it with -mcmodel=large.

Note that libc.so et al don't need any changes; the only changes
are for code that is statically linked into user code built with
-mcmodel=large.

For the assembly code, I just rewrote it so that it unconditionally
uses the large model.  To be able to pass -mcmodel=large to
csu/elf-init.c and csu/gmon-start.c, I need to check to see if the
compiler supports that flag, since gcc 4.7 doesn't; I added the
support by creating a small Makefile fragment that just runs the
compiler to check.
2012-11-06 09:48:49 -05:00
Chris Metcalf
e7776fefa7 tile: improve simulator notification for relative paths in dlopen
Normally, the simulator is notified of absolute pathnames by the
_dl_load_hook hook.  However, when a relative pathname is used, the
simulator may not know that the relative path matches a path that
it could figure out in the file system that it has access to.
Instead we provide a simplified version of the realpath function
so we can pass a plausible absolute pathname to the simulator.

Since we're now doing more work at object load time, we also add
a guard so we do no work at all if we're not running on the simulator.
2012-11-06 09:24:44 -05:00
Chris Metcalf
cd84016efe Optimize tile (mostly tilegx) memcpy and memmove performance.
- Override <memcopy.h> so we use full 8-byte word copies on tilegx32
  for memmove, then use op_t in memcpy instead of the previous
  locally-defined word_t just to avoid proliferating identical types.
- Fix bug in memcpy prefetch that caused us to never prefetch past
  the first cache line.
- Optimize misaligned memcpy by inlining _wordcopy_fwd_dest_aligned
  instead of just doing a dumb word-at-a-time copy.
- Make memcpy safe for forward copies by doing all the loads from
  a given cache line prior to doing a wh64 (cache line zero-fill)
  on the destination.  Remove now-redundant src == dst check.
- Copy and optimize the generic wordcopy.c routines to use the tile
  "double align" instruction instead of the MERGE macro; to avoid
  offset addressing mode (which tile doesn't have) by rewriting the
  pointer math to load and store with a zero index; and to use
  post-increment addresses in the inner loops to improve scheduling.
2012-11-06 09:24:19 -05:00
Joseph Myers
d7fcee3a58 Define lll_futex_timed_wait_bitset for MIPS. 2012-11-05 22:30:54 +00:00
Joseph Myers
316a1b67e1 Define lll_futex_timed_wait_bitset for ARM. 2012-11-05 22:30:37 +00:00
Joseph Myers
acfa885ff1 Fix types of FE_DFL_ENV and FE_NOMASK_ENV (bug 14805). 2012-11-05 13:38:40 +00:00
Thomas Schwinge
b830319d49 [BZ #157] Remove include/stub-tag.h for good. 2012-11-04 19:59:40 +01:00
Joseph Myers
5b5b04d628 Make fma use of Dekker and Knuth algorithms use round-to-nearest (bug 14796). 2012-11-03 19:48:53 +00:00
Joseph Myers
fbeafedeea Make fenv.h FE_* macros usable in #if (bug 3439). 2012-11-03 17:07:56 +00:00
Chris Metcalf
0244426b93 tile: Account for new tests (missed test-double changes) 2012-11-03 08:46:09 -04:00
Thomas Schwinge
46879baebf Regenerate all configure scripts. 2012-11-01 18:04:56 +01:00
Andreas Jaeger
53176cd906 Convert alpha to use <bits/fcntl-linux.h> 2012-11-01 06:07:38 +01:00
Thomas Schwinge
4c68e86547 BZ#14743: Move clock_* symbols from librt to libc.
Change missing from commit 6e6249d0b4.
2012-11-01 01:59:19 +01:00
Andreas Schwab
5a03cb1e85 Fix powerpc abilist sort order 2012-10-31 23:28:48 +01:00
Steve Ellcey
84097ebac3 Remove 'Contributed' line, glibc is not using them anymore. 2012-10-31 13:03:45 -07:00
Steve Ellcey
d002339920 Remove trailing white spaces. 2012-10-31 10:39:48 -07:00
Steve Ellcey
e6ff7f84f7 2012-10-31 Steve Ellcey <sellcey@mips.com>
* sysdeps/mips/memcpy.S: Add prefetching and more unrolling, make
	it work in 32 or 64 bit modes.
	* sysdeps/mips/mips64/memcpy.S: Remove.
2012-10-31 10:38:17 -07:00
Ryan S. Arnold
09dec6c37e Correct cacheline size to 32-bytes for ppc405 memset.S (bug 14595).
This patch also creates a version of memset.S for the ppc476 processor
which uses a 128-byte cacheline size for dcbz insns.
2012-10-30 17:07:18 -05:00
Chris Metcalf
47cc1490e0 Invoke DL_AFTER_LOAD if defined
This hook is useful for any arch-specific functionality that
should be done on loaded objects.  For the tile architecture,
the hook is already provided (though we switch to using the new
macro name with this commit) and implements a simulator notifier
so that the simulator can load Elf symbols to match the object
and generate better error messages for PC's.

Also, remove a spurious definition of DL_UNMAP in dl-runtime.c
2012-10-30 14:16:18 -04:00
Chris Metcalf
d44a6f8b99 tile: improve ABI and #include use in gettimeofday vdso support 2012-10-30 14:11:54 -04:00
Chris Metcalf
5ff3789785 tile: update libm-test-ulps for new tests 2012-10-30 14:11:22 -04:00
Joseph Myers
2a27fd6dae Fix strtod handling of underflow (bug 14047). 2012-10-30 13:51:27 +00:00
Carlos O'Donell
236bb0623d hppa: Add cfi direcvtives.
We add cfi directives to the syscall assembly.
2012-10-29 23:36:41 -04:00