bits/sigstack.h contains four things: the legacy struct sigstack type,
the preferred stack_t type, the SS_* enum values and macros for signal
stack sizes.
These vary in different ways between glibc configurations; in
particular, the stack sizes vary much more than any of the other
pieces. Furthermore, these pieces have different standard namespace
rules for when they should be visible (not currently visible in
conform/ results both because the relevant tests are XFAILed for
sys/ucontext.h namespace issues, and because some of the expectations
are incorrect in the same way as the headers, e.g. neither
expectations nor headers reflect that current POSIX no longer has
either the sigstack function or the sigstack structure).
To reduce duplication of identical definitions, and facilitate
namespace fixes without requiring the same feature test macro
conditions to be repeated in many versions of the same header, this
patch splits bits/sigstack.h up into four headers. It keeps the stack
size macros, while new bits/types/struct_sigstack.h,
bits/types/stack_t.h and bits/ss_flags.h are added for the other
pieces. bits/types/struct_sigstack.h is the same everywhere,
bits/types/stack_t.h has three variants different in the order of the
structure elements (generic = MIPS Linux, and other Linux), and
bits/ss_flags.h has generic and Linux variants.
This patch includes the new headers everywhere that included
<bits/sigstack.h>, so should cause no difference to what any public
header defines. Subsequent namespace fixes would then remove or
condition some of those includes.
There should be no conflicts with Zack's changes to signal.h types,
beyond the trivial conflict of both making additions to
signal/Makefile's headers list; the two patches affect disjoint sets
of types and other definitions.
Tested for x86_64 and x86, and with build-many-glibcs.py.
* bits/ss_flags.h: New file.
* bits/types/stack_t.h: Likewise.
* include/bits/types/struct_sigstack.h: Likewise.
* signal/bits/types/struct_sigstack.h: Likewise.
* sysdeps/unix/sysv/linux/bits/ss_flags.h: Likewise.
* sysdeps/unix/sysv/linux/bits/types/stack_t.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/types/stack_t.h: Likewise.
* signal/Makefile (headers): Add bits/types/struct_sigstack.h,
bits/types/stack_t.h and bits/ss_flags.h.
* signal/signal.h [__USE_XOPEN_EXTENDED || __USE_XOPEN2K8]:
Include <bits/types/struct_sigstack.h>, <bits/types/stack_t.h> and
<bits/ss_flags.h>.
* bits/sigstack.h (struct sigstack): Remove.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h
(struct sigstack): Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/mips/bits/sigstack.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h
(struct sigstack): Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/sigstack.h (struct sigstack):
Likewise.
(stack_t): Likewise.
(SS_ONSTACK): Likewise.
(SS_DISABLE): Likewise.
* sysdeps/arm/sys/ucontext.h: Include
<bits/types/struct_sigstack.h>, <bits/types/stack_t.h> and
<bits/ss_flags.h>.
* sysdeps/generic/sys/ucontext.h: Likewise.
* sysdeps/i386/sys/ucontext.h: Likewise.
* sysdeps/m68k/sys/ucontext.h: Likewise.
* sysdeps/mips/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h: Likewise.
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Likewise.
sys/ucontext.h unconditionally uses stack_t, and it does not make
sense to change that. But signal.h only declares stack_t under
__USE_XOPEN_EXTENDED || __USE_XOPEN2K8. The actual definition is
already in a bits header, bits/sigstack.h, but that header insists on
only being included by signal.h, so we have to change that as well as
all of the sys/ucontext.h variants. (Some but not all variants of
bits/sigcontext.h, which sys/ucontext.h may also need, had already
received this adjustment; for consistency, I made them all the same,
even if that's not strictly necessary in some configurations.)
bits/sigcontext.h and bits/sigstack.h also all need to receive
multiple inclusion guards.
* sysdeps/generic/sys/ucontext.h
* sysdeps/arm/sys/ucontext.h
* sysdeps/i386/sys/ucontext.h
* sysdeps/m68k/sys/ucontext.h
* sysdeps/mips/sys/ucontext.h
* sysdeps/unix/sysv/linux/aarch64/sys/ucontext.h
* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h
* sysdeps/unix/sysv/linux/hppa/sys/ucontext.h
* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
* sysdeps/unix/sysv/linux/m68k/sys/ucontext.h
* sysdeps/unix/sysv/linux/mips/sys/ucontext.h
* sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h
* sysdeps/unix/sysv/linux/s390/sys/ucontext.h
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h
* sysdeps/unix/sysv/linux/sparc/sys/ucontext.h
* sysdeps/unix/sysv/linux/tile/sys/ucontext.h
* sysdeps/unix/sysv/linux/x86/sys/ucontext.h:
Include both bits/sigcontext.h and bits/sigstack.h.
Fix grammar error in comment, if present.
* bits/sigstack.h
* sysdeps/unix/sysv/linux/aarch64/bits/sigstack.h
* sysdeps/unix/sysv/linux/alpha/bits/sigstack.h
* sysdeps/unix/sysv/linux/bits/sigstack.h
* sysdeps/unix/sysv/linux/ia64/bits/sigstack.h
* sysdeps/unix/sysv/linux/mips/bits/sigstack.h
* sysdeps/unix/sysv/linux/powerpc/bits/sigstack.h
* sysdeps/unix/sysv/linux/sparc/bits/sigstack.h
* bits/sigcontext.h
* sysdeps/mach/hurd/i386/bits/sigcontext.h
* sysdeps/unix/sysv/linux/bits/sigcontext.h
* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h
* sysdeps/unix/sysv/linux/sparc/bits/sigcontext.h:
Add multiple inclusion guard. Permit inclusion by sys/ucontext.h
as well as signal.h, if this was not already allowed. Request
definition of size_t if necessary. Minimize semantically-null
differences across files.
I've moved the ARM port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply
git mv ports/sysdeps/arm sysdeps/arm
git mv ports/sysdeps/unix/arm sysdeps/unix/arm
git mv ports/sysdeps/unix/sysv/linux/arm sysdeps/unix/sysv/linux/arm
and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.arm similar to that at the top of
ChangeLog.powerpc. There is deliberately no NEWS change, as I think
it makes the most sense to put in a general note above all ports
having moved if we can achieve that for 2.20.
Tested that disassembly of installed shared libraries for arm is the
same before and after this patch, except for data (not instructions)
in ld.so (there are assertions in sysdeps/arm/dl-machine.h, and the
path by which that file is found, and so by which it appears in the
assertion message, changes as a result of the move).
* sysdeps/arm: Move directory from ports/sysdeps/arm.
* sysdeps/unix/arm: Move directory from ports/sysdeps/unix/arm.
* sysdeps/unix/sysv/linux/arm: Move directory from
ports/sysdeps/unix/sysv/linux/arm.
* README: Update listing for arm-*-linux-gnueabi.
ports/ChangeLog.arm:
* sysdeps/arm: Move directory to ../sysdeps/arm.
* sysdeps/unix/arm: Move directory to ../sysdeps.arm.
* sysdeps/unix/sysv/linux/arm: Move directory to
../sysdeps/unix/sysv/linux/arm.
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.
2001-04-22 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/arm/sys/user.h (struct user_fpregs):
Renamed from struct user_fp.
(struct user_regs): New.
(struct user): Use struct user_regs rather than struct pt_regs to
avoid dependency on asm/ptrace.h. Use struct user_fpregs in place
of struct user_fp and struct user_fp_struct.
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: Include sys/procfs.h
not sys/elf.h.
2001-04-22 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/arm/sys/elf.h: Move contents to
sys/procfs.h, and tell the user to include that file instead.
* sysdeps/unix/sysv/linux/arm/sys/procfs.h: Remove old cruft
surrounded with #if 0.
(elf_greg_t, ELF_NGREG, elf_gregset_t, elf_fpregset_t): Moved here
from sys/elf.h.
(prgregset_t, prfpregset_t): Define in terms of elf_gregset_t and
elf_fpregset_t respectively.
2001-04-22 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/arm/register-dump.h: Also print the
address that faulted.
2000-03-24 Andreas Jaeger <aj@suse.de>
* Makefile (postclean): Added soversions.i.
2000-03-24 Scott Bambrough <scottb@netwinder.org>
* sysdeps/arm/fpu/fpu_control.h: Define _FPU_MASK_IM, _FPU_MASK_ZM,
_FPU_MASK_OM, _FPU_MASK_UM, _FPU_MASK_PM, _FPU_MASK_DM, _FPU_DEFAULT,
and _FPU_IEEE. Change _FPU_RESERVED.
2000-03-24 Scott Bambrough <scottb@netwinder.org>
* sysdeps/unix/sysv/linux/arm/sys/ucontext.h: New file.
2000-03-24 Roland McGrath <roland@baalperazim.frob.com>
* sysdeps/posix/getaddrinfo.c: Include <net/if.h> for if_nametoindex.
(gaih_inet): Remove unused duplicate variable.
* inet/getnameinfo.c (getnameinfo): Use IFNAMSIZ, not MAXHOSTNAMELEN.
Don't use __libc_sa_len, which only exists for Linux. Just handle
AF_INET and AF_INET6 directly as well as AF_LOCAL, since those are the
only flavors supported by this function anyway.
2000-03-24 Geoff Clare <gwc@unisoft.com>
* stdlib/strfmon.c: corrected problems with missing signs and
missing or extra spaces; allow for sign strings longer than
one character; add padding to ensure positive and negative
formats are aligned when a left precision is used.
2000-03-26 Ulrich Drepper <drepper@redhat.com>
* stdlib/random_r.c (__setstate_r): Allow RNGs of type 4.
Patch by John Mizel <John.Mizel@msdw.com>.
1999-08-09 Scott Bambrough <scottb@netwinder.org>
* sysdeps/unix/sysv/linux/arm/sys/user.h: Added members
'unsigned char ftype[8]', and 'unsigned int init_flag' to
struct user_fp. Tnese were added in version 2.2.12 of the
ARM Linux kernel.
* sysdeps/unix/sysv/linux/arm/sys/elf.h: New file.
* sysdeps/unix/sysv/linux/arm/sys/procfs.h: New file.
The generic procfs.h included <asm/elf.h>. This causes
structure redefinition errors when <sys/user.h> and <sys/procfs.h>
are included in the same source file. Found when building GDB.
1999-01-05 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/net/if_arp.h: Add new ARPHRD definitions
from latest (2.2.0pre4) kernel.
1999-01-05 Scott Bambrough <scottb@corelcomputer.com>
* sysdeps/unix/sysv/linux/arm/sys/user.h : New file. Fixes problem
on ARM platforms with programs that include <sys/user.h> and
<sys/ptrace.h>. Solution suggested by Geoff Keating earlier with
fix for same problem on the PowerPC platform.
1998-12-20 Philip Blundell <philb@gnu.org>
* sysdeps/unix/sysv/linux/arm/sysdep.h (INLINE_SYSCALL): Add
implementation.
* sysdeps/unix/sysv/linux/arm/syscalls.list: Remove wrappers for
now-inlined calls.
1998-12-22 Philip Blundell <pb@nexus.co.uk>
* sysdeps/unix/sysv/linux/arm/ioperm.c: New file.
Implementation of inb, outb etc for ARM systems.
* sysdeps/unix/sysv/linux/arm/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/arm/Versions: Add appropriate
entries for the above.
