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-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h116
1 files changed, 116 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h
new file mode 100644
index 0000000..286fa0c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h
@@ -0,0 +1,116 @@
+/* Copyright (C) 2014 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ENTRY(__##syscall_name##_nocancel); \
+L(pseudo_nocancel): \
+ DO_CALL(syscall_name); \
+ l.j L(pseudo_finish); \
+ l.nop; \
+END(__##syscall_name##_nocancel); \
+ENTRY(name); \
+ SINGLE_THREAD_P(r13); \
+ l.sfeq r13,r0; \
+ l.bnf L(pseudo_nocancel); \
+ l.nop; \
+ /* Reserve the same amount of stack space, effectivly disregarding \
+ * how many args we're supposed to push. This makes the code easier. */ \
+ l.addi r1,r1,-28; \
+ cfi_adjust_cfa_offset(28); \
+ PUSHARGS_##args; /* CENABLE is a function call, save args for syscall. */ \
+ CENABLE; \
+ l.sw 24(r1),r11; \
+ POPARGS_##args; \
+ DO_CALL(syscall_name); \
+ l.lwz r3,24(r1); /* pass return value from CENABLE to CDISABLE. */ \
+ l.sw 24(r1),r11; /* save syscall return value for after CDISABLE. */ \
+ CDISABLE; \
+ l.lwz r11,24(r1); /* restore syscall return value. */ \
+ cfi_adjust_cfa_offset(-28); \
+ l.addi r1,r1,28; \
+L(pseudo_finish): \
+ /* if -4096 < ret < 0 holds, it's an error */ \
+ l.sfgeui r11,0xf001; \
+ l.bf L(pseudo_end); \
+ l.nop
+
+# undef PSEUDO_END
+# define PSEUDO_END(name) \
+L(pseudo_end): \
+ l.j SYSCALL_ERROR_NAME; \
+ l.ori r3,r11,0; \
+ END(name)
+
+# define PUSHARGS_0 /* nothing to do */
+# define PUSHARGS_1 PUSHARGS_0 l.sw 0(r1),r3;
+# define PUSHARGS_2 PUSHARGS_1 l.sw 4(r1),r4;
+# define PUSHARGS_3 PUSHARGS_2 l.sw 8(r1),r5;
+# define PUSHARGS_4 PUSHARGS_3 l.sw 12(r1),r6;
+# define PUSHARGS_5 PUSHARGS_4 l.sw 16(r1),r7;
+# define PUSHARGS_6 PUSHARGS_5 l.sw 20(r1),r8;
+
+# define POPARGS_0 /* nothing to do */
+# define POPARGS_1 POPARGS_0 l.lwz r3,0(r1);
+# define POPARGS_2 POPARGS_1 l.lwz r4,4(r1);
+# define POPARGS_3 POPARGS_2 l.lwz r5,8(r1);
+# define POPARGS_4 POPARGS_3 l.lwz r6,12(r1);
+# define POPARGS_5 POPARGS_4 l.lwz r7,16(r1);
+# define POPARGS_6 POPARGS_5 l.lwz r8,20(r1);
+
+# define PSEUDO_JMP(sym) l.jal sym; l.nop;
+
+# ifdef IS_IN_libpthread
+# define CENABLE PSEUDO_JMP (__pthread_enable_asynccancel)
+# define CDISABLE PSEUDO_JMP (__pthread_disable_asynccancel)
+# elif defined IS_IN_librt
+# define CENABLE PSEUDO_JMP (__librt_enable_asynccancel)
+# define CDISABLE PSEUDO_JMP (__librt_disable_asynccancel)
+# else
+# define CENABLE PSEUDO_JMP (__libc_enable_asynccancel)
+# define CDISABLE PSEUDO_JMP (__libc_disable_asynccancel)
+# endif
+
+# ifndef __ASSEMBLER__
+# define SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.multiple_threads) == 0, 1)
+# else
+/* It's not super nice to have "r10" hardcoded here */
+# define SINGLE_THREAD_P(reg) l.lwz reg, MULTIPLE_THREADS_OFFSET(r10)
+#endif
+
+#elif !defined __ASSEMBLER__
+
+# define SINGLE_THREAD_P 1
+# define NO_CANCELLATION 1
+
+#endif
+
+#ifndef __ASSEMBLER__
+# define RTLD_SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.multiple_threads) == 0, 1)
+#endif