This patch consolidates all Linux sigaction implementations on the default
sysdeps/unix/sysv/linux/sigaction.c. The idea is remove redundant code
and simplify new ports addition by following the current generic
Linux User API (UAPI).
The UAPI for new ports defines a generic extensible sigaction struct as:
struct sigaction
{
__sighandler_t sa_handler;
unsigned long sa_flags;
#ifdef SA_RESTORER
void (*sa_restorer) (void);
#endif
sigset_t sa_mask;
};
Where SA_RESTORER is just placed for compatibility reasons (news ports
should not add it). A similar definition is used on generic
kernel_sigaction.h.
The user exported sigaction definition is not changed, so for most
architectures it requires an adjustment to kernel expected one for the
syscall.
The main changes are:
- All architectures now define and use a kernel_sigaction struct meant
for the syscall, even for the architectures where the user sigaction
has the same layout of the kernel expected one (s390-64 and ia64).
Although it requires more work for these architectures, it simplifies
the generic implementation. Also, sigaction is hardly a hotspot where
micro optimization would play an important role.
- The generic kernel_sigaction definition is now aligned with expected
UAPI one for newer ports, where SA_RESTORER and sa_restorer are not
expected to be defined. This means adding kernel_sigaction for
current architectures that does define it (m68k, nios2, powerpc, s390,
sh, sparc, and tile) and which rely on previous generic definition.
- Remove old MIPS usage of sa_restorer. This was removed since 2.6.27
(2957c9e61ee9c - "[MIPS] IRIX: Goodbye and thanks for all the fish").
- The remaining arch-specific sigaction.c are to handle ABI idiosyncrasies
(like SPARC kernel ABI for rt_sigaction that requires an additional
stub argument).
So for new ports the generic implementation should work if its uses
Linux UAPI. If SA_RESTORER is still required (due some architecture
limitation), it should define its own kernel_sigaction.h, define it and
include generic header (assuming it still uses the default generic kernel
layout).
Checked on x86_64-linux-gnu, i686-linux-gnu, arm-linux-gnueabihf,
aarch64-linux-gnu, sparc64-linux-gnu, sparcv9-linux-gnu, powerpc-linux-gnu,
powerpc64-linux-gnu, ia64-linux-gnu and alpha-linux-gnu. I also checked the
build on all remaining affected ABIs.
* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Use default Linux version
as base implementation.
* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h: Add include guards,
remove unrequired definitions and update comments.
* sysdeps/unix/sysv/linux/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/mips/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/kernel_sigaction.h: New file.
* sysdeps/unix/sysv/linux/m68k/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/kernel_sigaction: Likewise.
* sysdeps/unix/sysv/linux/s390/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/sh/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/tile/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/sigaction.c: Remove file.
* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sigaction.c: Add STUB, SET_SA_RESTORER,
and RESET_SA_RESTORER hooks.
1997-03-29 17:39 Ulrich Drepper <drepper@cygnus.com>
* math/Makefile (routines): Add carg, s_ccosh and s_csinh.
* math/complex.h: Add C++ protection.
* math/libm-test.c (cexp_test): Correct a few bugs.
(csinh_test): New function.
(ccosh_test): New function.
(cacos_test): New function.
(cacosh_test): New function.
(casinh_test): New function.
(catanh_test): New function.
(main): Add calls to csinh_test and ccosh_test.
* misc/Makefile (tests): Add tst-tsearch.
Add rule to link tst-tsearch against libm.
* misc/tsearch.c: Rewritten to use Red-Black-Tree algorithm by
Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>.
* misc/tst-tsearch.c: New file.
* stdio-common/bug5.c: Clear LD_LIBRARY_PATH environment variable
before using system.
* stdio-common/test-popen.c: Clear LD_LIBRARY_PATH environment variable
before using popen.
* sysdeps/libm-ieee754/s_cexp.c: Correct handling of special cases.
* sysdeps/libm-ieee754/s_cexpf.c: Likewise.
* sysdeps/libm-ieee754/s_cexpl.c: Likewise.
* sysdeps/libm-i387/s_cexp.S: New file. ix87 specific implementation
of complex exponential function.
* sysdeps/libm-i387/s_cexpf.S: New file.
* sysdeps/libm-i387/s_cexpl.S: New file.
* sysdeps/libm-ieee754/s_ccosh.c: New file. Implementation of
complex cosh function.
* sysdeps/libm-ieee754/s_ccoshf.c: New file.
* sysdeps/libm-ieee754/s_ccoshl.c: New file.
* sysdeps/libm-ieee754/s_csinh.c: New file. Implementation of
complex sinh function.
* sysdeps/libm-ieee754/s_csinhf.c: New file.
* sysdeps/libm-ieee754/s_csinhl.c: New file.
* math/carg.c: New file. Generic implementatio of carg function.
* math/cargf.c: New file.
* math/cargl.c: New file.
1997-03-29 16:07 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/system.c: Update copyright.
1997-03-29 04:18 Ulrich Drepper <drepper@cygnus.com>
* elf/dl-error.c (_dl_catch_error): Add another argument which is
passed to OPERATE.
(_dl_receive_error): Likewise.
* elf/link.h: Change prototypes for _dl_catch_error and
_dl_receive_error to reflect above change.
* elf/dl-deps.c: Don't use nested function. Call _dl_catch_error
with additional argument with pointer to data.
* elf/dlclose.c: Likewise.
* elf/dlerror.c: Likewise.
* elf/dlopen.c: Likewise.
* elf/dlsym.c: Likewise.
* elf/dlvsym.c: Likewise.
* elf/rtld.c: Likewise.
* nss/nsswitch.c: Likewise.
Patch by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>.
1997-03-28 21:14 Miguel de Icaza <miguel@nuclecu.unam.mx>
* elf/dl-error.c: Manually set up the values of "c", this avoids a
call to memcpy and a zero 152 bytes structure.
* sysdeps/sparc/dl-machine.h (elf_machine_rela): Test
RTLD_BOOTSTRAP to avoid performing relative relocs on a second
pass.
* sysdeps/sparc/udiv_qrnnd.S: Make the code PIC aware.
* sysdeps/unix/sysv/linux/sparc/Dist: Add kernel_stat.h and
kernel_sigaction.h
Add Linux/SPARC specific definitions.
* sysdeps/unix/sysv/linux/sparc/fcntlbits.h: New file.
* sysdeps/unix/sysv/linux/sparc/ioctls.h: New file.
* sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: New file.
* sysdeps/unix/sysv/linux/sparc/kernel_stat.h: New file.
* sysdeps/unix/sysv/linux/sparc/sigaction.h: New file.
* sysdeps/unix/sysv/linux/sparc/signum.h: New file.
* sysdeps/unix/sysv/linux/sparc/termbits.h: New file.
1997-03-28 13:06 Philip Blundell <pjb27@cam.ac.uk>
* sysdeps/posix/getaddrinfo.c (gaih_inet_serv): Use
__getservbyname_r() not getservbyname().
(BROKEN_LIKE_POSIX): Define to 1 so we get strict POSIX behaviour.
Adhemerval Zanella
Ulrich Drepper