1 files changed, 115 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
new file mode 100644
index 000000000..cddd754a8
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <tls.h>
+#include <sysdep.h>
+#ifndef __ASSEMBLER__
+# include <pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+
+#ifdef __ASSEMBLER__
+
+#undef ret
+#define ret
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, nargs)			\
+   /* vanilla version */				`	\
+   ENTRY(name##_nocancel)				`	\
+      DO_CALL (__NR_##syscall_name)			`	\
+      jls  [blink]					`	\
+      b  __syscall_error@plt				`	\
+   END(name##_nocancel)					`	\
+   /* thread cancellation variant */			`	\
+   ENTRY(name)			    			`	\
+      SINGLE_THREAD_P					`	\
+      bz name##_nocancel				`	\
+      DOCARGS_##nargs  /* stash syscall args */		`	\
+      CENABLE          /* call enable_asynccancel */	`	\
+      mov r9, r0       /* Safe-keep mask */ 		`	\
+      UNDOCARGS_##nargs	/* restore syscall args */	`	\
+      DO_CALL (__NR_##syscall_name)			`	\
+      push  r0         /* save syscall return value */	`	\
+      mov   r0, r9     /* prep mask for disable_asynccancel */  `	\
+      CDISABLE	`	\
+      pop  r0           /* get syscall ret value back */  ` \
+      cmp  r0, -1024	`	\
+      jls  [blink]					`	\
+      b  __syscall_error@plt				`	\
+   END(name)
+
+#undef	PSEUDO_END
+#define	PSEUDO_END(name)	\
+
+# ifdef IS_IN_libpthread
+#  define CENABLE	bl __pthread_enable_asynccancel
+#  define CDISABLE	bl __pthread_disable_asynccancel
+#  define __local_multiple_threads __pthread_multiple_threads
+# elif !defined NOT_IN_libc
+#  define CENABLE	bl __libc_enable_asynccancel
+#  define CDISABLE	bl __libc_disable_asynccancel
+#  define __local_multiple_threads __libc_multiple_threads
+# elif defined IS_IN_librt
+#  define CENABLE	bl __librt_enable_asynccancel
+#  define CDISABLE	bl __librt_disable_asynccancel
+# else
+#  error Unsupported library
+# endif
+
+#define DO_CALL(num)		\
+	mov	r8, num		`	\
+	ARC_TRAP_INSN		`	\
+	cmp r0, -1024
+
+.macro push reg
+	st.a \reg, [sp, -4]
+.endm
+
+.macro pop reg
+	ld.ab \reg, [sp, 4]
+.endm
+
+#define DOCARGS_0	push blink
+#define UNDOCARGS_0	pop  blink
+
+#define DOCARGS_1	DOCARGS_0`	push r0
+#define UNDOCARGS_1			pop  r0`	UNDOCARGS_0
+
+#define DOCARGS_2	DOCARGS_1`	push r1
+#define UNDOCARGS_2			pop  r1`	UNDOCARGS_1
+
+#define DOCARGS_3	DOCARGS_2`	push r2
+#define UNDOCARGS_3			pop  r2`	UNDOCARGS_2
+
+#define DOCARGS_4	DOCARGS_3`	push r3
+#define UNDOCARGS_4			pop  r3`	UNDOCARGS_3
+
+#define DOCARGS_5	DOCARGS_4`	push r4
+#define UNDOCARGS_5			pop  r4`	UNDOCARGS_4
+
+#define DOCARGS_6	DOCARGS_5`	push r5
+#define UNDOCARGS_6			pop  r5`	UNDOCARGS_5
+
+#define DOCARGS_7	DOCARGS_6`	push r6
+#define UNDOCARGS_7			pop  r6`	UNDOCARGS_6
+
+#  define SINGLE_THREAD_P 			\
+    THREAD_SELF r1   `				\
+    ld	   r2, [r1, MULTIPLE_THREADS_OFFSET]`	\
+    cmp    r2, 0
+
+/*    ld	   r2, [r1, -TLS_PRE_TCB_SIZE + MULTIPLE_THREADS_OFFSET] */
+#else	/* !__ASSEMBLER__ */
+
+/* TBD: Can use @__local_multiple_threads for libc/libpthread like ARM */
+#   define SINGLE_THREAD_P	\
+    likely(THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)
+
+#endif /* __ASSEMBLER__ */
+
+#endif