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authorAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
committerAustin Foxley <austinf@cetoncorp.com>2009-10-17 12:26:24 -0700
commitc68d0fa2d88fc2134a38d99e7e944828384a7671 (patch)
tree6596943bd1c77f18d6e49d4153ddd3f3d67b49f5 /libpthread/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
parent9a03e98a3b418f33c347a6023e9320f3a42cb9e4 (diff)
libpthread/nptl: core of the "Native Posix Threading Library" for uClibc
targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h247
1 files changed, 247 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
new file mode 100644
index 000000000..dbaa44385
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
@@ -0,0 +1,247 @@
+/* Copyright (C) 2003, 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#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
+
+# define _IMM12 #-12
+# define _IMM16 #-16
+# define _IMP16 #16
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ .text; \
+ ENTRY (name); \
+ .Lpseudo_start: \
+ SINGLE_THREAD_P; \
+ bf .Lpseudo_cancel; \
+ .type __##syscall_name##_nocancel,@function; \
+ .globl __##syscall_name##_nocancel; \
+ __##syscall_name##_nocancel: \
+ DO_CALL (syscall_name, args); \
+ mov r0,r1; \
+ mov _IMM12,r2; \
+ shad r2,r1; \
+ not r1,r1; \
+ tst r1,r1; \
+ bt .Lsyscall_error; \
+ bra .Lpseudo_end; \
+ nop; \
+ .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
+ .Lpseudo_cancel: \
+ sts.l pr,@-r15; \
+ .LCFI0: \
+ add _IMM16,r15; \
+ SAVE_ARGS_##args; \
+ .LCFI1: \
+ CENABLE; \
+ LOAD_ARGS_##args; \
+ add _IMP16,r15; \
+ .LCFI2: \
+ lds.l @r15+,pr; \
+ .LCFI3: \
+ DO_CALL(syscall_name, args); \
+ SYSCALL_INST_PAD; \
+ sts.l pr,@-r15; \
+ .LCFI4: \
+ mov.l r0,@-r15; \
+ .LCFI5: \
+ CDISABLE; \
+ mov.l @r15+,r0; \
+ .LCFI6: \
+ lds.l @r15+,pr; \
+ .LCFI7: \
+ mov r0,r1; \
+ mov _IMM12,r2; \
+ shad r2,r1; \
+ not r1,r1; \
+ tst r1,r1; \
+ bf .Lpseudo_end; \
+ .Lsyscall_error: \
+ SYSCALL_ERROR_HANDLER; \
+ .Lpseudo_end: \
+ /* Create unwinding information for the syscall wrapper. */ \
+ .section .eh_frame,"a",@progbits; \
+ .Lframe1: \
+ .ualong .LECIE1-.LSCIE1; \
+ .LSCIE1: \
+ .ualong 0x0; \
+ .byte 0x1; \
+ AUGMENTATION_STRING; \
+ .uleb128 0x1; \
+ .sleb128 -4; \
+ .byte 0x11; \
+ AUGMENTATION_PARAM; \
+ .byte 0xc; \
+ .uleb128 0xf; \
+ .uleb128 0x0; \
+ .align 2; \
+ .LECIE1: \
+ .LSFDE1: \
+ .ualong .LEFDE1-.LASFDE1; \
+ .LASFDE1: \
+ .ualong .LASFDE1-.Lframe1; \
+ START_SYMBOL_REF; \
+ .ualong .Lpseudo_end - .Lpseudo_start; \
+ AUGMENTATION_PARAM_FDE; \
+ .byte 0x4; \
+ .ualong .LCFI0-.Lpseudo_start; \
+ .byte 0xe; \
+ .uleb128 0x4; \
+ .byte 0x91; \
+ .uleb128 0x1; \
+ .byte 0x4; \
+ .ualong .LCFI1-.LCFI0; \
+ .byte 0xe; \
+ .uleb128 0x14; \
+ FRAME_REG_##args; \
+ .byte 0x4; \
+ .ualong .LCFI2-.LCFI1; \
+ .byte 0xe; \
+ .uleb128 0x4; \
+ .byte 0x4; \
+ .ualong .LCFI3-.LCFI2; \
+ .byte 0xe; \
+ .uleb128 0x0; \
+ .byte 0xd1; \
+ .byte 0x4; \
+ .ualong .LCFI4-.LCFI3; \
+ .byte 0xe; \
+ .uleb128 0x4; \
+ .byte 0x91; \
+ .uleb128 0x1; \
+ .byte 0x4; \
+ .ualong .LCFI5-.LCFI4; \
+ .byte 0xe; \
+ .uleb128 0x8; \
+ .byte 0x80; \
+ .uleb128 0x2; \
+ .byte 0x4; \
+ .ualong .LCFI6-.LCFI5; \
+ .byte 0xe; \
+ .uleb128 0x4; \
+ .byte 0xc0; \
+ .byte 0x4; \
+ .ualong .LCFI7-.LCFI6; \
+ .byte 0xe; \
+ .uleb128 0x0; \
+ .byte 0xd1; \
+ .align 2; \
+ .LEFDE1: \
+ .previous
+
+# ifdef SHARED
+# define AUGMENTATION_STRING .string "zR"
+# define AUGMENTATION_PARAM .uleb128 1; .byte 0x1b
+# define AUGMENTATION_PARAM_FDE .uleb128 0
+# define START_SYMBOL_REF .long .Lpseudo_start-.
+# else
+# define AUGMENTATION_STRING .ascii "\0"
+# define AUGMENTATION_PARAM
+# define AUGMENTATION_PARAM_FDE
+# define START_SYMBOL_REF .long .Lpseudo_start
+# endif
+
+# define FRAME_REG_0 /* Nothing. */
+# define FRAME_REG_1 FRAME_REG_0; .byte 0x84; .uleb128 5
+# define FRAME_REG_2 FRAME_REG_1; .byte 0x85; .uleb128 4
+# define FRAME_REG_3 FRAME_REG_2; .byte 0x86; .uleb128 3
+# define FRAME_REG_4 FRAME_REG_3; .byte 0x87; .uleb128 2
+# define FRAME_REG_5 FRAME_REG_4
+# define FRAME_REG_6 FRAME_REG_5
+
+# undef PSEUDO_END
+# define PSEUDO_END(sym) \
+ END (sym)
+
+# define SAVE_ARGS_0 /* Nothing. */
+# define SAVE_ARGS_1 SAVE_ARGS_0; mov.l r4,@(0,r15)
+# define SAVE_ARGS_2 SAVE_ARGS_1; mov.l r5,@(4,r15)
+# define SAVE_ARGS_3 SAVE_ARGS_2; mov.l r6,@(8,r15)
+# define SAVE_ARGS_4 SAVE_ARGS_3; mov.l r7,@(12,r15)
+# define SAVE_ARGS_5 SAVE_ARGS_4
+# define SAVE_ARGS_6 SAVE_ARGS_5
+
+# define LOAD_ARGS_0 /* Nothing. */
+# define LOAD_ARGS_1 LOAD_ARGS_0; mov.l @(0,r15),r4
+# define LOAD_ARGS_2 LOAD_ARGS_1; mov.l @(4,r15),r5
+# define LOAD_ARGS_3 LOAD_ARGS_2; mov.l @(8,r15),r6
+# define LOAD_ARGS_4 LOAD_ARGS_3; mov.l @(12,r15),r7
+# define LOAD_ARGS_5 LOAD_ARGS_4
+# define LOAD_ARGS_6 LOAD_ARGS_5
+
+# ifdef IS_IN_libpthread
+# define __local_enable_asynccancel __pthread_enable_asynccancel
+# define __local_disable_asynccancel __pthread_disable_asynccancel
+# elif !defined NOT_IN_libc
+# define __local_enable_asynccancel __libc_enable_asynccancel
+# define __local_disable_asynccancel __libc_disable_asynccancel
+# elif defined IS_IN_librt
+# define __local_enable_asynccancel __librt_enable_asynccancel
+# define __local_disable_asynccancel __librt_disable_asynccancel
+# else
+# error Unsupported library
+# endif
+
+# define CENABLE \
+ mov.l 1f,r0; \
+ bsrf r0; \
+ nop; \
+ 0: bra 2f; \
+ mov r0,r2; \
+ .align 2; \
+ 1: .long __local_enable_asynccancel - 0b; \
+ 2:
+
+# define CDISABLE \
+ mov.l 1f,r0; \
+ bsrf r0; \
+ mov r2,r4; \
+ 0: bra 2f; \
+ nop; \
+ .align 2; \
+ 1: .long __local_disable_asynccancel - 0b; \
+ 2:
+
+# ifndef __ASSEMBLER__
+# define SINGLE_THREAD_P \
+ __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+ header.multiple_threads) == 0, 1)
+# else
+# define SINGLE_THREAD_P \
+ stc gbr,r0; \
+ mov.w 0f,r1; \
+ sub r1,r0; \
+ mov.l @(MULTIPLE_THREADS_OFFSET,r0),r0; \
+ bra 1f; \
+ tst r0,r0; \
+ 0: .word TLS_PRE_TCB_SIZE; \
+ 1:
+
+# endif
+
+#elif !defined __ASSEMBLER__
+
+# define SINGLE_THREAD_P (1)
+# define NO_CANCELLATION 1
+
+#endif