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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2018-01-05 15:38:06 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2018-03-07 17:39:40 -0300
commit3dc214977beccc95f0df3b90fa4ca2557fe1bdd2 (patch)
tree0fa01dffb98e3e727d6e4672450ede29fbb373fb /ChangeLog
parent4e54d918630ea53e29dd70d3bdffcb00d29ed3d4 (diff)
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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.
Diffstat (limited to 'ChangeLog')
-rw-r--r--ChangeLog45
1 files changed, 45 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index a24ed86474..57e6be9971 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,48 @@
+2018-03-07  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	* 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.
+
 2018-03-06  Siddhesh Poyarekar  <siddhesh@sourceware.org>
 
 	* sysdeps/aarch64/memcmp.S (more16): Fix loop16 branch target.