16 Commits

Author SHA1 Message Date
kib
3913be8cf6 Rework the __vdso_* symbols attributes to only make the symbols weak,
but use normal references instead of weak.  This makes the statically
linked binaries to use fast gettimeofday(2) by forcing the linker to
resolve references and providing the neccessary functions.

Reported by:	bde
Tested by:	marius (sparc64)
MFC after:	2 weeks
2013-01-30 12:48:16 +00:00
nwhitehorn
5ff92b1d9c Do not restore the register holding the TLS pointer when doing various
usermode context switches (long jumps and ucontext operations). If these
are used across threads, multiple threads can end up with the same TLS base.
Madness will then result.

This makes behavior on PPC match that on x86 systems and on Linux.

MFC after:	10 days
2012-04-11 00:00:40 +00:00
nwhitehorn
07f16a905d Properly resolve the _ctx_start function descriptor (the symbol _ctx_start
is a descriptor, not a code address), which prevents crashes when starting
a context. This fixes QEMU on powerpc64.

MFC after:	3 days
2012-04-07 22:28:50 +00:00
andreast
bf13243b53 Replace the assembler macro WEAK_ALIAS with a new macro WEAK_REFERENCE which
has the same API as __weak_reference(). Give 'x' in SYS.h a more meaningful
name.

Tested on 32- and 64-bit PowerMac.

Reviewed by:	bde
2012-02-05 20:04:43 +00:00
kib
c5ba0185aa Make the sys/ucontext.h self-contained by changing the return type
of __getcontextx_size(3) from size_t to int.

PR:	ports/164654
MFC after:	1 month
2012-02-01 13:33:53 +00:00
kib
8c121450bc Add API for obtaining extended machine context states that cannot be
fit into existing mcontext_t.

On i386 and amd64 do return the extended FPU states using
getcontextx(3). For other architectures, getcontextx(3) returns the
same information as getcontext(2).

Tested by:  pho
MFC after:  1 month
2012-01-21 18:00:28 +00:00
andreast
cec8421d47 This commit adds profiling support for powerpc64. Now we can do application
profiling and kernel profiling. To enable kernel profiling one has to build
kgmon(8). I will enable the build once I managed to build and test powerpc
(32-bit) kernels with profiling support.

- add a powerpc64 PROF_PROLOGUE for _mcount.
- add macros to avoid adding the PROF_PROLOGUE in certain assembly entries.
- apply these macros where needed.
- add size information to the MCOUNT function.

MFC after:	3 weeks, together with r230291
2012-01-20 22:34:19 +00:00
andreast
3d25a34ed9 Two other places where we can use WEAK_ALIAS. 2012-01-08 11:57:38 +00:00
andreast
372ed30c8e Use the macro WEAK_ALIAS. Tested on 32 and 64-bit. 2012-01-06 09:21:40 +00:00
das
9373f7b9c4 Replace a proliferation of buggy MD implementations of modf() with a
working MI one.  The MI one only needs to be overridden on machines
with non-IEEE754 arithmetic.  (The last supported one was the VAX.)
It can also be overridden if someone comes up with a faster one that
actually passes the regression tests -- but this is harder than it sounds.
2011-10-21 06:40:36 +00:00
brucec
6d9b42b486 Fix typos - remove duplicate "the".
PR:	bin/154928
Submitted by:	Eitan Adler <lists at eitanadler.com>
MFC after: 	3 days
2011-02-21 09:01:34 +00:00
nwhitehorn
699ef3129b Turn off default generation of userland dot symbols on powerpc64 now that
we have a binutils that supports it. Kernel dot symbols remain on to assist
DDB.
2011-02-18 21:44:53 +00:00
kib
897b773ff4 Mark assembler sources from libc as working with non-executable stack.
Reviewed and tested by:	nwhitehorn
2011-01-14 11:33:40 +00:00
nwhitehorn
42dfb2d204 Fix stack alignment (required to be to 16 bytes) instead of ptrace and
cerror on powerpc64.
2010-12-11 17:57:42 +00:00
dim
52f3eed068 Make sure to specify the alignment of minbrk and curbrk. They were correctly
aligned by accident with earlier binutils, but no longer are, causing link
failures.

Submitted by:	nwhitehorn
Obtained from:	projects/binutils-2.17
2010-11-11 22:35:42 +00:00
nwhitehorn
a1ab13ffb6 Provide 64-bit PowerPC support in libc.
Obtained from:	projects/ppc64
2010-07-10 14:45:03 +00:00