11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP
  26 #define OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP
  27 
  28 #ifndef __thumb__
  29   enum {
  30     // Offset to add to frame::_fp when dealing with non-thumb C frames
  31 #ifdef AARCH64
  32     C_frame_offset =  0,
  33 #else
  34     C_frame_offset =  -1,
  35 #endif
  36   };
  37 #endif
  38 
  39   static void setup_fpu();
  40 
  41   static bool is_allocatable(size_t bytes);
  42 
  43   // Used to register dynamic code cache area with the OS
  44   // Note: Currently only used in 64 bit Windows implementations
  45   static bool register_code_area(char *low, char *high) { return true; }
  46 
  47 #ifndef AARCH64
  48   static int64_t (*atomic_cmpxchg_long_func)(int64_t compare_value,
  49                                              int64_t exchange_value,
  50                                              volatile int64_t *dest);
  51 
  52   static int64_t (*atomic_load_long_func)(const volatile int64_t*);
  53 
  54   static void (*atomic_store_long_func)(int64_t, volatile int64_t*);
  55 
  56   static int32_t  (*atomic_add_func)(int32_t add_value, volatile int32_t *dest);
  57 
  58   static int32_t  (*atomic_xchg_func)(int32_t exchange_value, volatile int32_t *dest);
  59 
  60   static int32_t  (*atomic_cmpxchg_func)(int32_t compare_value,
  61                                          int32_t exchange_value,
  62                                          volatile int32_t *dest);
  63 
  64   static int64_t atomic_cmpxchg_long_bootstrap(int64_t, int64_t, volatile int64_t*);
  65 
  66   static int64_t atomic_load_long_bootstrap(const volatile int64_t*);
  67 
  68   static void atomic_store_long_bootstrap(int64_t, volatile int64_t*);
  69 
  70   static int32_t  atomic_add_bootstrap(int32_t add_value, volatile int32_t *dest);
  71 
  72   static int32_t  atomic_xchg_bootstrap(int32_t exchange_value, volatile int32_t *dest);
  73 
  74   static int32_t  atomic_cmpxchg_bootstrap(int32_t compare_value,
  75                                            int32_t exchange_value,
  76                                            volatile int32_t *dest);
  77 #endif // !AARCH64
  78 
  79 #endif // OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP

  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP
  26 #define OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP
  27 
  28 #ifndef __thumb__
  29   enum {
  30     // Offset to add to frame::_fp when dealing with non-thumb C frames



  31     C_frame_offset =  -1,

  32   };
  33 #endif
  34 
  35   static void setup_fpu();
  36 
  37   static bool is_allocatable(size_t bytes);
  38 
  39   // Used to register dynamic code cache area with the OS
  40   // Note: Currently only used in 64 bit Windows implementations
  41   static bool register_code_area(char *low, char *high) { return true; }
  42 

  43   static int64_t (*atomic_cmpxchg_long_func)(int64_t compare_value,
  44                                              int64_t exchange_value,
  45                                              volatile int64_t *dest);
  46 
  47   static int64_t (*atomic_load_long_func)(const volatile int64_t*);
  48 
  49   static void (*atomic_store_long_func)(int64_t, volatile int64_t*);
  50 
  51   static int32_t  (*atomic_add_func)(int32_t add_value, volatile int32_t *dest);
  52 
  53   static int32_t  (*atomic_xchg_func)(int32_t exchange_value, volatile int32_t *dest);
  54 
  55   static int32_t  (*atomic_cmpxchg_func)(int32_t compare_value,
  56                                          int32_t exchange_value,
  57                                          volatile int32_t *dest);
  58 
  59   static int64_t atomic_cmpxchg_long_bootstrap(int64_t, int64_t, volatile int64_t*);
  60 
  61   static int64_t atomic_load_long_bootstrap(const volatile int64_t*);
  62 
  63   static void atomic_store_long_bootstrap(int64_t, volatile int64_t*);
  64 
  65   static int32_t  atomic_add_bootstrap(int32_t add_value, volatile int32_t *dest);
  66 
  67   static int32_t  atomic_xchg_bootstrap(int32_t exchange_value, volatile int32_t *dest);
  68 
  69   static int32_t  atomic_cmpxchg_bootstrap(int32_t compare_value,
  70                                            int32_t exchange_value,
  71                                            volatile int32_t *dest);

  72 
  73 #endif // OS_CPU_LINUX_ARM_VM_OS_LINUX_ARM_HPP