diff options
| author | Miles Bader <miles@lsi.nec.co.jp> | 2003-01-30 08:44:40 +0000 |
|---|---|---|
| committer | Miles Bader <miles@lsi.nec.co.jp> | 2003-01-30 08:44:40 +0000 |
| commit | e3c44a3395f29a278f20653feb8a65a72b88013a (patch) | |
| tree | f26cbd73c6f5f53b00a9842ef0a5f66dcc8204c5 | |
| parent | e454093a142e48d242eb9faf960fd2d5621677e7 (diff) | |
Initial checkin.
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/v850/pt-machine.h | 46 | ||||
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/v850/sigcontextinfo.h | 17 |
2 files changed, 63 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/v850/pt-machine.h b/libpthread/linuxthreads/sysdeps/v850/pt-machine.h new file mode 100644 index 000000000..a28360c58 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/v850/pt-machine.h @@ -0,0 +1,46 @@ +/* + * sysdeps/v850/pt-machine.h -- v850-specific pthread definitions + * + * Copyright (C) 2002 NEC Electronics Corporation + * Copyright (C) 2002 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#ifndef PT_EI +# define PT_EI extern inline +#endif + +/* Get some notion of the current stack. Need not be exactly the top + of the stack, just something somewhere in the current frame. */ +#define CURRENT_STACK_FRAME __stack_pointer +register char *__stack_pointer __asm__ ("sp"); + +#define HAS_COMPARE_AND_SWAP + +/* Atomically: If *PTR == OLD, set *PTR to NEW and return true, + otherwise do nothing and return false. */ +PT_EI int +__compare_and_swap (long *ptr, long old, long new) +{ + unsigned long psw; + + /* disable interrupts */ + __asm__ __volatile__ ("stsr psw, %0; di" : "=&r" (psw)); + + if (likely (*ptr == old)) + { + *ptr = new; + __asm__ __volatile__ ("ldsr %0, psw" :: "r" (psw)); /* re-enable */ + return 1; + } + else + { + __asm__ __volatile__ ("ldsr %0, psw" :: "r" (psw)); /* re-enable */ + return 0; + } +} diff --git a/libpthread/linuxthreads/sysdeps/v850/sigcontextinfo.h b/libpthread/linuxthreads/sysdeps/v850/sigcontextinfo.h new file mode 100644 index 000000000..7587e9126 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/v850/sigcontextinfo.h @@ -0,0 +1,17 @@ +/* + * sysdeps/v850/sigcontextinfo.h -- v850-specific pthread signal definitions + * + * Copyright (C) 2002 NEC Electronics Corporation + * Copyright (C) 2002 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#include <signal.h> + +#define SIGCONTEXT struct sigcontext * +#define SIGCONTEXT_EXTRA_ARGS |