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Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h99
1 files changed, 99 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
new file mode 100644
index 0000000000..7704bf2b82
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
@@ -0,0 +1,99 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ .text; \
+L(pseudo_cancel): \
+ STM_##args \
+ stm %r12,%r15,48(%r15); \
+ lr %r14,%r15; \
+ ahi %r15,-96; \
+ st %r14,0(%r15); \
+ basr %r13,0; \
+0: l %r1,1f-0b(%r13); \
+ bas %r14,0(%r1,%r13); \
+ lr %r0,%r2; \
+ LM_##args \
+ DO_CALL(syscall_name, args); \
+ l %r1,2f-0b(%r13); \
+ lr %r12,%r2; \
+ lr %r2,%r0; \
+ bas %r14,0(%r1,%r13); \
+ lr %r2,%r12; \
+ lm %r12,%r15,48+96(%r15); \
+ j L(pseudo_check); \
+1: .long CENABLE-0b; \
+2: .long CDISABLE-0b; \
+ENTRY(name) \
+ SINGLE_THREAD_P(%r1) \
+ jne L(pseudo_cancel); \
+ DO_CALL(syscall_name, args); \
+L(pseudo_check): \
+ lhi %r4,-4095; \
+ clr %r2,%r4; \
+ jnl SYSCALL_ERROR_LABEL; \
+L(pseudo_end):
+
+# ifdef IS_IN_libpthread
+# define CENABLE __pthread_enable_asynccancel
+# define CDISABLE __pthread_disable_asynccancel
+# else
+# define CENABLE __libc_enable_asynccancel
+# define CDISABLE __libc_disable_asynccancel
+# endif
+
+#define STM_0 /* Nothing */
+#define STM_1 st %r2,8(%r15);
+#define STM_2 stm %r2,%r3,8(%r15);
+#define STM_3 stm %r2,%r4,8(%r15);
+#define STM_4 stm %r2,%r5,8(%r15);
+#define STM_5 stm %r2,%r5,8(%r15);
+
+#define LM_0 /* Nothing */
+#define LM_1 l %r2,8+96(%r15);
+#define LM_2 lm %r2,%r3,8+96(%r15);
+#define LM_3 lm %r2,%r4,8+96(%r15);
+#define LM_4 lm %r2,%r5,8+96(%r15);
+#define LM_5 lm %r2,%r5,8+96(%r15);
+
+# ifndef __ASSEMBLER__
+# define SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.data.multiple_threads) == 0, 1)
+# else
+# define SINGLE_THREAD_P(reg) \
+ ear reg,%a0; \
+ icm reg,15,MULTIPLE_THREADS_OFFSET(reg);
+# endif
+
+#elif !defined __ASSEMBLER__
+
+/* This code should never be used but we define it anyhow. */
+# define SINGLE_THREAD_P (1)
+
+#endif