Remove cancellation support for syscall generation

This patch removes the cancellation mark from the auto-generation syscall
script.  Now all the cancellable syscalls are done throught C code using
the SYSCALL_CANCEL macro.  It simplifies the assembly required to each
architecture port, since the SYSCALL_CANCEL uses the already defined
INLINE_SYSCALL macros, and allows a more straigh fix on cancellation
machanism (since no more specific assembly fixes will be required).

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.A
Also with build-many-glibc.py with remaning touched architectures.

	* sysdeps/unix/make-syscalls.sh: Remove cancellable tagging for
	syscall definitions.
	* sysdeps/unix/syscall-template.S (SYSCALL_CANCELLABLE): Remove
	definition.
	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (__local_enable_asynccancel): Likewise.
	[IS_IN (libpthread)] (__local_disable_asynccancel): Likewise.
	[IS_IN (libc)] (__local_enable_asynccancel): Likewise.
	[IS_IN (libc)] (__local_enable_asynccancel): Likewise.
	[IS_IN (librt)] (__local_disable_asynccancel): Likewise.
	[IS_IN (librt)] (__local_disable_asynccancel): Likewise.
	(CENABLE): Likewise.
	(CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h (PSEUDO): Remove
	defintion.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h (PSEUDO):
	Remove definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	(SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Remove file.
	* sysdeps/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/sysdep-cancel.h: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Remove file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sysdep-cancel.h: New file.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h (PSEUDO): Remove
	definition.
	(PSEUDO_END): Likewise.
	[IS_IN (libpthread)] (CENABLE): Likewise.
	[IS_IN (libpthread)] (CDISABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (libc)] (CENABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[IS_IN (librt)] (CDISABLE): Likewise.
	[__ASSEMBLER__] (SINGLE_THREAD_P): Likewise.

1 files changed, 7 insertions, 228 deletions

diff --git a/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h b/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
index 8b7f2b2095..bf88ea56be 100644
--- a/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/hppa/sysdep-cancel.h
@@ -17,221 +17,10 @@
 
 #include <sysdep.h>
 #include <tls.h>
-#ifndef __ASSEMBLER__
-# include <nptl/pthreadP.h>
-#endif
+#include <nptl/pthreadP.h>
 
 #if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
 
-# ifndef NO_ERROR
-#  define NO_ERROR -0x1000
-# endif
-
-/* The syscall cancellation mechanism requires userspace
-   assistance, the following code does roughly this:
-
-	do arguments (read arg5 and arg6 to registers)
-	setup frame
-
-	check if there are threads, yes jump to pseudo_cancel
-
-	unthreaded:
-		syscall
-		check syscall return (jump to pre_end)
-		set errno
-		set return to -1
-		(jump to pre_end)
-
-	pseudo_cancel:
-		cenable
-		syscall
-		cdisable
-		check syscall return (jump to pre_end)
-		set errno
-		set return to -1
-
-	pre_end
-		restore stack
-
-	It is expected that 'ret' and 'END' macros will
-	append an 'undo arguments' and 'return' to the
-	this PSEUDO macro. */
-
-# undef PSEUDO
-# define PSEUDO(name, syscall_name, args)				\
-	ENTRY (__##syscall_name##_nocancel)				\
-	DOARGS_##args					ASM_LINE_SEP	\
-	stwm TREG, 64(%sp)				ASM_LINE_SEP	\
-	.cfi_def_cfa_offset -64				ASM_LINE_SEP	\
-	.cfi_offset TREG, 0				ASM_LINE_SEP	\
-	stw %sp, -4(%sp)				ASM_LINE_SEP	\
-	stw %r19, -32(%sp)				ASM_LINE_SEP	\
-	.cfi_offset 19, 32				ASM_LINE_SEP	\
-	/* Save r19 */					ASM_LINE_SEP	\
-	SAVE_PIC(TREG)					ASM_LINE_SEP	\
-	/* Do syscall, delay loads # */			ASM_LINE_SEP	\
-	ble  0x100(%sr2,%r0)				ASM_LINE_SEP	\
-	ldi SYS_ify (syscall_name), %r20 /* delay */	ASM_LINE_SEP	\
-	ldi NO_ERROR,%r1				ASM_LINE_SEP	\
-	cmpb,>>=,n %r1,%ret0,L(pre_nc_end)		ASM_LINE_SEP	\
-	/* Restore r19 from TREG */			ASM_LINE_SEP	\
-	LOAD_PIC(TREG) /* delay */			ASM_LINE_SEP	\
-	SYSCALL_ERROR_HANDLER				ASM_LINE_SEP	\
-	/* Use TREG for temp storage */			ASM_LINE_SEP	\
-	copy %ret0, TREG /* delay */			ASM_LINE_SEP	\
-	/* OPTIMIZE: Don't reload r19 */		ASM_LINE_SEP	\
-	/* do a -1*syscall_ret0 */			ASM_LINE_SEP	\
-	sub %r0, TREG, TREG				ASM_LINE_SEP	\
-	/* Store into errno location */			ASM_LINE_SEP	\
-	stw TREG, 0(%sr0,%ret0)				ASM_LINE_SEP	\
-	/* return -1 as error */			ASM_LINE_SEP	\
-	ldi -1, %ret0					ASM_LINE_SEP	\
-L(pre_nc_end):						ASM_LINE_SEP	\
-	/* No need to LOAD_PIC */			ASM_LINE_SEP	\
-	/* Undo frame */				ASM_LINE_SEP	\
-	ldwm -64(%sp),TREG				ASM_LINE_SEP	\
-	/* Restore rp before exit */			ASM_LINE_SEP	\
-	ldw -20(%sp), %rp				ASM_LINE_SEP	\
-	ret						ASM_LINE_SEP	\
-	END(__##syscall_name##_nocancel)		ASM_LINE_SEP	\
-	/**********************************************/ASM_LINE_SEP	\
-	ENTRY (name)							\
-	DOARGS_##args					ASM_LINE_SEP	\
-	stwm TREG, 64(%sp)				ASM_LINE_SEP	\
-	.cfi_def_cfa_offset -64				ASM_LINE_SEP	\
-	.cfi_offset TREG, 0				ASM_LINE_SEP	\
-	stw %sp, -4(%sp)				ASM_LINE_SEP	\
-	stw %r19, -32(%sp)				ASM_LINE_SEP	\
-	.cfi_offset 19, 32				ASM_LINE_SEP	\
-	/* Done setting up frame, continue... */	ASM_LINE_SEP	\
-	SINGLE_THREAD_P					ASM_LINE_SEP	\
-	cmpib,<>,n 0,%ret0,L(pseudo_cancel)		ASM_LINE_SEP	\
-L(unthreaded):						ASM_LINE_SEP	\
-	/* Save r19 */					ASM_LINE_SEP	\
-	SAVE_PIC(TREG)					ASM_LINE_SEP	\
-	/* Do syscall, delay loads # */			ASM_LINE_SEP	\
-	ble  0x100(%sr2,%r0)				ASM_LINE_SEP	\
-	ldi SYS_ify (syscall_name), %r20 /* delay */	ASM_LINE_SEP	\
-	ldi NO_ERROR,%r1				ASM_LINE_SEP	\
-	cmpb,>>=,n %r1,%ret0,L(pre_end)			ASM_LINE_SEP	\
-	/* Restore r19 from TREG */			ASM_LINE_SEP	\
-	LOAD_PIC(TREG) /* delay */			ASM_LINE_SEP	\
-	SYSCALL_ERROR_HANDLER				ASM_LINE_SEP	\
-	/* Use TREG for temp storage */			ASM_LINE_SEP	\
-	copy %ret0, TREG /* delay */			ASM_LINE_SEP	\
-	/* OPTIMIZE: Don't reload r19 */		ASM_LINE_SEP	\
-	/* do a -1*syscall_ret0 */			ASM_LINE_SEP	\
-	sub %r0, TREG, TREG				ASM_LINE_SEP	\
-	/* Store into errno location */			ASM_LINE_SEP	\
-	stw TREG, 0(%sr0,%ret0)				ASM_LINE_SEP	\
-	b L(pre_end)					ASM_LINE_SEP	\
-	/* return -1 as error */			ASM_LINE_SEP	\
-	ldi -1, %ret0 /* delay */			ASM_LINE_SEP	\
-L(pseudo_cancel):					ASM_LINE_SEP	\
-	PUSHARGS_##args /* Save args */			ASM_LINE_SEP	\
-	/* Save r19 into TREG */			ASM_LINE_SEP	\
-	CENABLE /* FUNC CALL */				ASM_LINE_SEP	\
-	SAVE_PIC(TREG) /* delay */			ASM_LINE_SEP	\
-	/* restore syscall args */			ASM_LINE_SEP	\
-	POPARGS_##args					ASM_LINE_SEP	\
-	/* save mask from cenable (use stub rp slot) */	ASM_LINE_SEP	\
-	stw %ret0, -24(%sp)				ASM_LINE_SEP	\
-	/* ... SYSCALL ... */				ASM_LINE_SEP	\
-	ble 0x100(%sr2,%r0)				ASM_LINE_SEP    \
-	ldi SYS_ify (syscall_name), %r20 /* delay */	ASM_LINE_SEP	\
-	/* ............... */				ASM_LINE_SEP	\
-	LOAD_PIC(TREG)					ASM_LINE_SEP	\
-	/* pass mask as arg0 to cdisable */		ASM_LINE_SEP	\
-	ldw -24(%sp), %r26				ASM_LINE_SEP	\
-	CDISABLE					ASM_LINE_SEP	\
-	stw %ret0, -24(%sp) /* delay */			ASM_LINE_SEP	\
-	/* Restore syscall return */			ASM_LINE_SEP	\
-	ldw -24(%sp), %ret0				ASM_LINE_SEP	\
-	/* compare error */				ASM_LINE_SEP	\
-	ldi NO_ERROR,%r1				ASM_LINE_SEP	\
-	/* branch if no error */			ASM_LINE_SEP	\
-	cmpb,>>=,n %r1,%ret0,L(pre_end)			ASM_LINE_SEP	\
-	LOAD_PIC(TREG)	/* cond. nullify */		ASM_LINE_SEP	\
-	copy %ret0, TREG /* save syscall return */	ASM_LINE_SEP	\
-	SYSCALL_ERROR_HANDLER				ASM_LINE_SEP	\
-	/* make syscall res value positive */		ASM_LINE_SEP	\
-	sub %r0, TREG, TREG	/* delay */		ASM_LINE_SEP	\
-	/* No need to LOAD_PIC */			ASM_LINE_SEP	\
-	/* store into errno location */			ASM_LINE_SEP	\
-	stw TREG, 0(%sr0,%ret0)				ASM_LINE_SEP	\
-	/* return -1 */					ASM_LINE_SEP	\
-	ldi -1, %ret0					ASM_LINE_SEP	\
-L(pre_end):						ASM_LINE_SEP	\
-	/* No need to LOAD_PIC */			ASM_LINE_SEP	\
-	/* Undo frame */				ASM_LINE_SEP	\
-	ldwm -64(%sp),TREG				ASM_LINE_SEP	\
-	/* Restore rp before exit */			ASM_LINE_SEP	\
-	ldw -20(%sp), %rp				ASM_LINE_SEP
-
-/* Save arguments into our frame */
-# define PUSHARGS_0	/* nothing to do */
-# define PUSHARGS_1	PUSHARGS_0 stw %r26, -36(%sr0,%sp)	ASM_LINE_SEP	\
-			.cfi_offset 26, 28			ASM_LINE_SEP
-# define PUSHARGS_2	PUSHARGS_1 stw %r25, -40(%sr0,%sp)	ASM_LINE_SEP	\
-			.cfi_offset 25, 24			ASM_LINE_SEP
-# define PUSHARGS_3	PUSHARGS_2 stw %r24, -44(%sr0,%sp)	ASM_LINE_SEP	\
-			.cfi_offset 24, 20			ASM_LINE_SEP
-# define PUSHARGS_4	PUSHARGS_3 stw %r23, -48(%sr0,%sp)	ASM_LINE_SEP	\
-			.cfi_offset 23, 16			ASM_LINE_SEP
-# define PUSHARGS_5	PUSHARGS_4 stw %r22, -52(%sr0,%sp)	ASM_LINE_SEP	\
-			.cfi_offset 22, 12			ASM_LINE_SEP
-# define PUSHARGS_6	PUSHARGS_5 stw %r21, -56(%sr0,%sp)	ASM_LINE_SEP	\
-			.cfi_offset 21, 8			ASM_LINE_SEP
-
-/* Bring them back from the stack */
-# define POPARGS_0	/* nothing to do */
-# define POPARGS_1	POPARGS_0 ldw -36(%sr0,%sp), %r26	ASM_LINE_SEP
-# define POPARGS_2	POPARGS_1 ldw -40(%sr0,%sp), %r25	ASM_LINE_SEP
-# define POPARGS_3	POPARGS_2 ldw -44(%sr0,%sp), %r24	ASM_LINE_SEP
-# define POPARGS_4	POPARGS_3 ldw -48(%sr0,%sp), %r23	ASM_LINE_SEP
-# define POPARGS_5	POPARGS_4 ldw -52(%sr0,%sp), %r22	ASM_LINE_SEP
-# define POPARGS_6	POPARGS_5 ldw -56(%sr0,%sp), %r21	ASM_LINE_SEP
-
-# if IS_IN (libpthread)
-#  ifdef PIC
-#   define CENABLE .import __pthread_enable_asynccancel,code ASM_LINE_SEP \
-			bl __pthread_enable_asynccancel,%r2 ASM_LINE_SEP
-#   define CDISABLE .import __pthread_disable_asynccancel,code ASM_LINE_SEP \
-			bl __pthread_disable_asynccancel,%r2 ASM_LINE_SEP
-#  else
-#   define CENABLE .import __pthread_enable_asynccancel,code ASM_LINE_SEP \
-			bl __pthread_enable_asynccancel,%r2 ASM_LINE_SEP
-#   define CDISABLE .import __pthread_disable_asynccancel,code ASM_LINE_SEP \
-			bl __pthread_disable_asynccancel,%r2 ASM_LINE_SEP
-#  endif
-# elif IS_IN (libc)
-#  ifdef PIC
-#   define CENABLE .import __libc_enable_asynccancel,code ASM_LINE_SEP \
-			bl __libc_enable_asynccancel,%r2 ASM_LINE_SEP
-#   define CDISABLE	.import __libc_disable_asynccancel,code ASM_LINE_SEP \
-			bl __libc_disable_asynccancel,%r2 ASM_LINE_SEP
-#  else
-#   define CENABLE .import __libc_enable_asynccancel,code ASM_LINE_SEP \
-			bl __libc_enable_asynccancel,%r2 ASM_LINE_SEP
-#   define CDISABLE	.import __libc_disable_asynccancel,code ASM_LINE_SEP \
-			bl __libc_disable_asynccancel,%r2 ASM_LINE_SEP
-#  endif
-# elif IS_IN (librt)
-#  ifdef PIC
-#   define CENABLE .import __librt_enable_asynccancel,code ASM_LINE_SEP \
-			bl __librt_enable_asynccancel,%r2 ASM_LINE_SEP
-#   define CDISABLE .import __librt_disable_asynccancel,code ASM_LINE_SEP \
-			bl __librt_disable_asynccancel,%r2 ASM_LINE_SEP
-#  else
-#   define CENABLE .import __librt_enable_asynccancel,code ASM_LINE_SEP \
-			bl __librt_enable_asynccancel,%r2 ASM_LINE_SEP
-#   define CDISABLE .import __librt_disable_asynccancel,code ASM_LINE_SEP \
-			bl __librt_disable_asynccancel,%r2 ASM_LINE_SEP
-#  endif
-# else
-#  error Unsupported library
-# endif
-
 # if IS_IN (libpthread)
 #  define __local_multiple_threads __pthread_multiple_threads
 # elif IS_IN (libc)
@@ -242,17 +31,10 @@ L(pre_end):						ASM_LINE_SEP	\
 #  error Unsupported library
 # endif
 
-# ifndef __ASSEMBLER__
-#  define SINGLE_THREAD_P \
-  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
-				   header.multiple_threads) == 0, 1)
-# else
-/* Read the value of header.multiple_threads from the thread pointer */
-#  define SINGLE_THREAD_P							\
-	mfctl %cr27, %ret0					ASM_LINE_SEP	\
-	ldw MULTIPLE_THREADS_THREAD_OFFSET(%sr0,%ret0),%ret0	ASM_LINE_SEP
-# endif
-#elif !defined __ASSEMBLER__
+# define SINGLE_THREAD_P \
+  __glibc_likely (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)
+
+#else
 
 /* This code should never be used but we define it anyhow.  */
 # define SINGLE_THREAD_P (1)
@@ -261,8 +43,5 @@ L(pre_end):						ASM_LINE_SEP	\
 #endif
 /* IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt) */
 
-#ifndef __ASSEMBLER__
-# define RTLD_SINGLE_THREAD_P \
-  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
-				   header.multiple_threads) == 0, 1)
-#endif
+#define RTLD_SINGLE_THREAD_P \
+  __glibc_likely (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)