Alpha rt_sigaction syscall uses a slight different kernel ABI than
generic one:
arch/alpha/kernel/signal.c
90 SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
91 struct sigaction __user *, oact,
92 size_t, sigsetsize, void __user *, restorer)
Similar as sparc, the syscall expects a restorer function. However
different than sparc, alpha defines the restorer as the 5th argument
(sparc defines as the 4th).
This patch removes the arch-specific alpha sigaction implementation,
adapt the Linux generic one to different restore placements (through
STUB macro), and make alpha use the Linux generic kernel_sigaction
definition.
Checked on alpha-linux-gnu and x86_64-linux-gnu (for sanity).
* sysdeps/unix/sysv/linux/alpha/Makefile: Update comment about
__syscall_rt_sigaction.
* sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h
(kernel_sigaction): Use Linux generic defintion.
(STUB): Define.
(__syscall_rt_sigreturn, __syscall_sigreturn): Add prototype.
* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S
(__syscall_rt_sigaction): Remove implementation.
(__syscall_sigreturn, __syscall_rt_sigreturn): Define as global and
hidden.
* sysdeps/unix/sysv/linux/alpha/sigaction.c: Remove file.
* sysdeps/unix/sysv/linux/alpha/sysdep.h (INLINE_SYSCALL,
INTERNAL_SYSCALL): Remove definitions.
* sysdeps/unix/sysv/linux/sigaction.c: Define STUB to accept both the
action and signal set size.
* sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (STUB): Redefine.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (STUB): Likewise.
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.
These are called from the kernel with the stack at a carefully-
chosen location so that the stack frame can be restored: they must not
move the stack pointer lest garbage be restored into the registers.
We explicitly inhibit protection for SPARC and for signal/sigreturn.c:
other arches either define their sigreturn stubs in .S files, or (i386,
x86_64, mips) use macros expanding to top-level asm blocks and explicit
labels in the text section to mock up a "function" without telling the
compiler that one is there at all.
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
2000-01-30 Ulrich Drepper <drepper@redhat.com>
* locale/programs/ld-collate.c (struct locale_collate_t): Change
type of plane_size and plane_cnt to uint32_t.
Reported by Jakub Jelinek.
2000-01-29 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h
(SYSCALL_ERROR_HANDLER): Optimize.
(__SYSCALL_STRING, __SYSCALL_CLOBBERS): Define.
Include linux/sparc/sysdep.h.
Use a different guard define than linux/sparc/sysdep.h.
* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Remove
stubs for inlined syscalls.
* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h
(SYSCALL_ERROR_HANDLER): Optimize.
(__SYSCALL_STRING, __SYSCALL_CLOBBERS): Define.
Include linux/sparc/sysdep.h.
* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Remove
stubs for inlined syscalls.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (__sigaction):
Use INLINE_SYSCALL.
* sysdeps/unix/sysv/linux/sparc/sparc64/Makefile: Remove.
* sysdeps/unix/sysv/linux/sparc/sysdep.h: New file.
2000-01-29 Ulrich Drepper <drepper@redhat.com>
1999-12-17 Ulrich Drepper <drepper@cygnus.com>
* string/bits/string2.h (__strtok_r_1c): Help gcc optimizing string
access.
* locale/programs/ld-collate.c: Implement handling of absolute
ellipsis. Parsing of file and constructing the internal data
structures should now be complete.
(collate_finish): Start adding support to generate the data
structures which are written out to the file.
* intl/dcgettext.c: Rewrite to handle caching of previous results here
instead of in the dcgettext macro.
* intl/libintl.h (dcgettext): Don't define for systems using this
glibc or systems with tsearch.
* sysdeps/generic/mathdef.h: Protect definitions for math.h
against double inclusion.
* sysdeps/alpha/fpu/bits/mathdef.h: Likewise.
* sysdeps/i386/fpu/bits/mathdef.h: Likewise.
* sysdeps/m68k/fpu/bits/mathdef.h: Likewise.
* sysdeps/powerpc/fpu/bits/mathdef.h: Likewise.
* sysdeps/i386/fpu/libm-test-ulps: Add more deltas (are mobile PIIs
that different?).
1999-12-17 Andreas Jaeger <aj@suse.de>
* rt/aio.h (struct aiocb64): Add member __next_prio to sync the
struct with aiocb.
* rt/Makefile (tests): Added tst-aio64.
Added dependency rules for tst-aio64.
* rt/tst-aio64.c: New file, copied from tst-aio.c and changed for
64bit tests.
1999-12-15 Thorsten Kukuk <kukuk@suse.de>
* sysdeps/unix/sysv/linux/alpha/oldgetrlimit64.c: Removed.
* sysdeps/unix/sysv/linux/alpha/oldsetrlimit64.c: Removed.
* sysdeps/unix/sysv/linux/bits/resource.h: Change RLIM_INFINITY back to
old value (signed long).
* sysdeps/unix/sysv/linux/i386/bits/resource.h: New, with unsigned
long RLIM_INFINITY.
* sysdeps/unix/sysv/linux/getrlimit.c: Moved from here to ...
* sysdeps/unix/sysv/linux/i386/getrlimit.c: ... here.
* sysdeps/unix/sysv/linux/getrlimit64.c: Moved from here to ...
* sysdeps/unix/sysv/linux/i386/getrlimit64.c: ... here.
* sysdeps/unix/sysv/linux/oldgetrlimit64.c: Moved from here to ...
* sysdeps/unix/sysv/linux/i386/oldgetrlimit64.c: ... here.
* sysdeps/unix/sysv/linux/oldsetrlimit64.c: Moved from here to ...
* sysdeps/unix/sysv/linux/i386/oldsetrlimit64.c: ... here.
* sysdeps/unix/sysv/linux/setrlimit.c: Moved from here to ...
* sysdeps/unix/sysv/linux/i386/setrlimit.c: ... here.
* sysdeps/unix/sysv/linux/setrlimit64.c: Moved from here to ...
* sysdeps/unix/sysv/linux/i386/setrlimit64.c: ... here.
* sysdeps/unix/sysv/linux/sparc/bits/resource.h: New.
* sysdeps/unix/sysv/linux/sparc/sparc64/oldgetrlimit64.c: Removed.
* sysdeps/unix/sysv/linux/sparc/sparc64/oldsetrlimit64.c: Removed.
1999-12-17 Andreas Jaeger <aj@suse.de>
* elf/ldconfig.c: Add new option -l to manualy link shared
libraries.
(options): Added option.
(parse_opt): Set option.
(main): Handle option.
(manual_link): New function.
1999-12-17 Thorsten Kukuk <kukuk@suse.de>
* string/bits/string2.h: Fix patch from 1999-12-07.
1999-12-16 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/generic/strsep.c: If delim string has only one character
don't run over end of string.
* locale/programs/ld-collate.c (insert_weights): Also update next
pointer of last cursor element.
(insert_value): Return nonzero value if nothing got inserted.
(handle_ellipsis): Don't do anything if to-value cannot be inserted.
1999-12-10 Jakub Jelinek <jakub@redhat.com>
* stdlib/longlong.h (__sparc_v9__): Use %rDIGIT instead of %DIGIT
where appropriate.
1999-12-10 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (__sigaction):
Copy sa_flags into kernel sigaction structure.
1999-12-14 Andreas Jaeger <aj@suse.de>
* string/tester.c (test_strsep): More tests for access beyond
the final NUL. The first two tests come from PR libc/1486 by
martinea@iro.umontreal.ca.
1999-12-14 Thorsten Kukuk <kukuk@suse.de>
* nis/ypclnt.c: Correct handling of cached client handles.
(__xdr_ypresp_all): Call callback function for errors, too,
like Solaris does.
* nis/nss_compat/compat-grp.c: Make sure errno is always set correct.
* nis/nss_compat/compat-initgroups.c: Likewise.
* nis/nss_compat/compat-spwd.c: Likewise.
* nis/nss_nis/nis-alias.c: Likewise.
* nis/nss_nis/nis-ethers.c: Likewise.
* nis/nss_nis/nis-grp.c: Likewise.
* nis/nss_nis/nis-hosts.c: Likewise.
* nis/nss_nis/nis-netgrp.c: Likewise.
* nis/nss_nis/nis-publickey.c: Likewise.
* nis/nss_nis/nis-service.c: Likewise. Also use services.byservicename
Map if available, optimize query if name/port and protocol is known.
1999-08-02 Jakub Jelinek <jj@ultra.linux.cz>
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (__sigaction):
Only allow rt signal frames. No SA_SIGINFO signals will have the
siginfo_t just not filled out with SI_NOINFO code.
* sysdeps/unix/sysv/linux/sparc/sparc64/register-dump.h
(register_dump): Take the above change into account.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigcontextinfo.h
(rt_signal_frame): Likewise.
* sysdeps/unix/sysv/linux/sparc/getsysstats.c: New file.
1999-06-02 Jakub Jelinek <jj@ultra.linux.cz>
* stdlib/longlong.h: Define UDIV_TIME on sparc64.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigpending.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/pause.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigprocmask.c: New file.
* sysdeps/unix/sysv/linux/sparc/sparc64/sigsuspend.c: New file.
