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Commit b4a5d26d883 (linux: Consolidate sigaction implementation) added
a wrong kernel_sigaction definition for m68k, meant for __NR_sigaction
instead of __NR_rt_sigaction as used on generic Linux sigaction
implementation. This patch fixes it by using the Linux generic
definition meant for the RT kernel ABI.
Checked the signal tests on emulated m68-linux-gnu (Aranym). It fixes
the faulty signal/tst-sigaction and man works as expected.
Adhemerval Zanella <adhemerval.zanella@linaro.org>
James Clarke <jrtc27@jrtc27.com>
[BZ #23960]
* sysdeps/unix/sysv/linux/kernel_sigaction.h (HAS_SA_RESTORER):
Define if SA_RESTORER is defined.
(kernel_sigaction): Define sa_restorer if HAS_SA_RESTORER is defined.
(SET_SA_RESTORER, RESET_SA_RESTORER): Define iff the macro are not
already defined.
* sysdeps/unix/sysv/linux/m68k/kernel_sigaction.h (SA_RESTORER,
kernel_sigaction, SET_SA_RESTORER, RESET_SA_RESTORER): Remove
definitions.
(HAS_SA_RESTORER): Define.
* sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h (SA_RESTORER,
SET_SA_RESTORER, RESET_SA_RESTORER): Remove definition.
(HAS_SA_RESTORER): Define.
* sysdeps/unix/sysv/linux/nios2/kernel_sigaction.h: Include generic
kernel_sigaction after define SET_SA_RESTORER and RESET_SA_RESTORER.
* sysdeps/unix/sysv/linux/powerpc/kernel_sigaction.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
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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.
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1997-06-29 23:43 Ulrich Drepper <drepper@cygnus.com>
* config.make.in: Define need-nopic-initfini.
* configure.in: Write out nopic_initfini.
* csu/Makefile: Generate no-PIC crt code if need-nopic-initfini
is defined.
* sysdeps/i386/fpu/fraiseexcpt.c: Correct FE_INEXACT case.
* sysdeps/sparc/rem.S: Get trap definition properly.
* sysdeps/sparc/sdiv.S: Likewise.
* sysdeps/sparc/udiv.S: Likewise.
* sysdeps/sparc/urem.S: Likewise.
* sysdeps/sparc/setjmp.S: Include <sys/trap.h>.
* sysdeps/sparc/sys/trap.h: New file.
* sysdeps/unix/sysv/linux/sparc/sys/trap.h: New file.
1997-06-25 10:26 Thorsten Kukuk <kukuk@uni-paderborn.de>
* sysdeps/generic/rpc/auth.h: Add xdr_opaque_auth declaration.
1997-06-29 10:34 Fila Kolodny <fila@ibi.com>
* sysdeps/mach/hurd/select.c (__select): Change MACH_MSG_SIZE_INTEGER_T
to MACH_MSG_TYPE_INTEGER_T.
1997-06-29 01:04 Richard Henderson <richard@gnu.ai.mit.edu>
Initial sparc64-linux support:
* configure.in: Recognize sparc64 as being different from sparc.
* io/ftwtest-sh: Only invoke ld.so if it exists.
* math/Makefile (LDLIBS-*): Change from libm to math/libm to get
static tests to link. Honour $(omit-long-double-fcts) == yes.
* math/libm-test.c (test_single_exception): The argument to
fetestexcept is `int' not `fexcept_t'.
* shlib-versions: Recognize sparc64.
* signal/signal.h: Add typedef for stack_t.
* stdio-common/_itoa.c: Defaulting UMUL_TIME==UDIV_TIME is broken.
Attempt to fix up most of this by cleaning up assumptions below,
but give up and change the defaults.
* setjmp/longjmp.c: Moved to ...
* sysdeps/generic/longjmp.c: ... here.
* setjmp/sigjmp.c: Moved to ...
* sysdeps/generic/sigjmp.c: ... here.
* sysdeps/sparc/bsd-_setjmp.S [PIC]: There wasn't even valid asm here.
Ought to fix up gas to catch these silly things properly.
* sysdeps/sparc/bsd-setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/sparc/errno.c: Remove.
* sysdeps/unix/sysv/linux/sparc/kernel_sigaction.h: Remove.
* sysdeps/unix/sysv/linux/sparc/kernel_stat.h: Tell xstat about
the unused fields.
* sysdeps/sparc/sparc64/add_n.s: Moved to ...
* sysdeps/sparc64/add_n.S: ... here. Fix up %g4 and stack usage.
* sysdeps/sparc/sparc64/addmul_1.s: Likewise.
* sysdeps/sparc/sparc64/gmp-mparam.h: Likewise.
* sysdeps/sparc/sparc64/lshift.s: Likewise.
* sysdeps/sparc/sparc64/mul_1.s: Likewise.
* sysdeps/sparc/sparc64/rshift.s: Likewise.
* sysdeps/sparc/sparc64/sub_n.s: Likewise.
* sysdeps/sparc/sparc64/submul_1.s: Likewise.
* sysdeps/sparc64/Implies: New file.
* sysdeps/sparc64/Makefile: Likewise.
* sysdeps/sparc64/bits/endian.h: Likewise.
* sysdeps/sparc64/bsd-_setjmp.S: Likewise.
* sysdeps/sparc64/bsd-setjmp.S: Likewise.
* sysdeps/sparc64/dl-machine.h: Likewise.
* sysdeps/sparc64/elf/Makefile: Likewise.
* sysdeps/sparc64/elf/crtbegin.S: Likewise.
* sysdeps/sparc64/elf/crtbeginS.S: Likewise.
* sysdeps/sparc64/elf/crtend.S: Likewise.
* sysdeps/sparc64/elf/crtendS.S: Likewise.
* sysdeps/sparc64/elf/start.S: Likewise.
* sysdeps/sparc64/fpu_control.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/Makefile: Likewise.
* sysdeps/unix/sysv/linux/sparc64/__longjmp.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/bits/setjmp.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/bits/types.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/brk.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/fork.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/init-first.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/kernel_stat.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/longjmp.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/pipe.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/profil-counter.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/setjmp.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/sigjmp.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/sparc64/sysdep.S: Likewise.
* sysdeps/unix/sysv/linux/sparc64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/sparc64/ucontext.h: Likewise.
1997-06-28 16:28 H.J. Lu <hjl@gnu.ai.mit.edu>
* configure.in: Add -nostartfiles -nostdlib when check for
--version-script.
1997-06-28 12:03 H.J. Lu <hjl@gnu.ai.mit.edu>
* sysdeps/powerpc/bits/endian.h: New file.
1997-06-28 20:52 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/syscalls.list: Add getresgid and
setresgid.
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