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3dc214977b
glibc/sysdeps
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Adhemerval Zanella 3dc214977b Refactor Linux ARCH_FORK implementation 
This patch refactors the ARCH_FORK macro and the required architecture
specific header to simplify the required architecture definitions
to provide the fork syscall semantic and proper document current
Linux clone ABI variant.

Instead of require the reimplementation of arch-fork.h header, this
patch changes the ARCH_FORK to an inline function with clone ABI
defined by kernel-features.h define.  The generic kernel ABI meant
for newer ports is used as default and redefine if the architecture
requires.

Checked on x86_64-linux-gnu and i686-linux-gnu.  Also with a build
for all the afected ABIs.

	* sysdeps/nptl/fork.c (ARCH_FORK): Replace by auch_fork.
	* sysdeps/unix/sysv/linux/alpha/arch-fork.h: Remove file.
	* sysdeps/unix/sysv/linux/riscv/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/nios2/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/arch-fork.h: Likewise.
	* sysdeps/unix/sysv/linux/arch-fork.h (arch_fork): New function.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h: New file.
	* sysdeps/unix/sysv/linux/riscv/kernel-features.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS): Define.
	* sysdeps/unix/sysv/linux/createthread.c (ARCH_CLONE): Define to
	__clone2 if __NR_clone2 is defined.
	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS): Likewise.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS): Likewise.
	* sysdeps/unix/sysv/linux/ia64/kernel-features.h
	(__ASSUME_CLONE2): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS3): Likewise.
	* sysdeps/unix/sysv/linux/kernel-features.h: Document possible clone
	variants and the define architecture can use.
	(__ASSUME_CLONE_DEFAULT): Define as default.
	* sysdeps/unix/sysv/linux/mips/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_CLONE_BACKWARDS2): Likewise.
2018-03-07 17:39:40 -03:00
..
aarch64 aarch64: Fix branch target to loop16 2018-03-06 23:01:02 +05:30
alpha Update Alpha libm-test-ulps 2018-01-27 13:31:38 +01:00
arm Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
generic Rename nptl-signals.h to internal-signals.h 2018-02-22 16:43:59 -03:00
gnu Add TCP_FASTOPEN_KEY, TCP_FASTOPEN_NO_COOKIE from Linux 4.15. 2018-02-06 00:42:22 +00:00
hppa Fix ulps for pow on hppa. 2018-02-17 13:46:50 -05:00
i386 Fix i386 fenv_private.h float128 for 32-bit --with-fpmath=sse (bug 22902). 2018-02-28 21:55:51 +00:00
ia64 Remove mplog and mpexp 2018-02-15 12:41:05 +00:00
ieee754 Mechanically remove _IO_ name aliases for types and constants. 2018-02-21 14:11:05 -05:00
init_array sysdeps/init_array: Add PREINIT_FUNCTION to crti.S 2018-01-29 10:22:26 -08:00
m68k Remove mplog and mpexp 2018-02-15 12:41:05 +00:00
mach Add missing start-of-file descriptive comment. 2018-03-06 09:21:04 +01:00
microblaze Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
mips Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
nios2 Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
nptl Refactor Linux ARCH_FORK implementation 2018-03-07 17:39:40 -03:00
posix Add missing start-of-file descriptive comment. 2018-03-06 09:21:04 +01:00
powerpc Fix powerpc ifunc-sel.h build for -Os. 2018-03-02 22:27:56 +00:00
pthread hurd: fix timer_routines.c build 2018-02-27 01:15:39 +01:00
riscv RISC-V: fmax/fmin: Handle signalling NaNs correctly. 2018-02-22 14:31:54 -05:00
s390 Fix s390 -Os iconv build. 2018-03-05 21:46:55 +00:00
sh Update SH libm-tests-ulps 2018-02-14 14:03:40 -02:00
sparc Update sparc ulps 2018-02-22 16:44:58 -03:00
tile Unify and simplify bits/byteswap.h, bits/byteswap-16.h headers (bug 14508, bug 15512, bug 17082, bug 20530). 2018-02-06 21:55:08 +00:00
unix Refactor Linux ARCH_FORK implementation 2018-03-07 17:39:40 -03:00
wordsize-32 Use libc_hidden_* for strtoumax (bug 15105). 2018-02-28 14:16:21 +00:00
wordsize-64 Use libc_hidden_* for strtoumax (bug 15105). 2018-02-28 14:16:21 +00:00
x86 Unify and simplify bits/byteswap.h, bits/byteswap-16.h headers (bug 14508, bug 15512, bug 17082, bug 20530). 2018-02-06 21:55:08 +00:00
x86_64 Remove mplog and mpexp 2018-02-15 12:41:05 +00:00