13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
22  * questions.
23  *
24  */
25 
26 #ifndef OS_CPU_LINUX_ZERO_OS_LINUX_ZERO_HPP
27 #define OS_CPU_LINUX_ZERO_OS_LINUX_ZERO_HPP
28 
29   static void setup_fpu() {}
30 
31   static bool is_allocatable(size_t bytes);
32 
33   // Used to register dynamic code cache area with the OS
34   // Note: Currently only used in 64 bit Windows implementations
35   static bool register_code_area(char *low, char *high) { return true; }
36 
37   // Atomically copy 64 bits of data
38   static void atomic_copy64(const volatile void *src, volatile void *dst) {
39 #if defined(PPC32) && !defined(__SPE__)
40     double tmp;
41     asm volatile ("lfd  %0, %2\n"
42                   "stfd %0, %1\n"
43                   : "=&f"(tmp), "=Q"(*(volatile double*)dst)
44                   : "Q"(*(volatile double*)src));
45 #elif defined(PPC32) && defined(__SPE__)
46     long tmp;
47     asm volatile ("evldd  %0, %2\n"
48                   "evstdd %0, %1\n"
49                   : "=&r"(tmp), "=Q"(*(volatile long*)dst)
50                   : "Q"(*(volatile long*)src));
51 #elif defined(S390) && !defined(_LP64)
52     double tmp;
53     asm volatile ("ld  %0, %2\n"
54                   "std %0, %1\n"
55                   : "=&f"(tmp), "=Q"(*(volatile double*)dst)
56                   : "Q"(*(volatile double*)src));

13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
22  * questions.
23  *
24  */
25 
26 #ifndef OS_CPU_LINUX_ZERO_OS_LINUX_ZERO_HPP
27 #define OS_CPU_LINUX_ZERO_OS_LINUX_ZERO_HPP
28 
29   static void setup_fpu() {}
30 
31   static bool is_allocatable(size_t bytes);
32 




33   // Atomically copy 64 bits of data
34   static void atomic_copy64(const volatile void *src, volatile void *dst) {
35 #if defined(PPC32) && !defined(__SPE__)
36     double tmp;
37     asm volatile ("lfd  %0, %2\n"
38                   "stfd %0, %1\n"
39                   : "=&f"(tmp), "=Q"(*(volatile double*)dst)
40                   : "Q"(*(volatile double*)src));
41 #elif defined(PPC32) && defined(__SPE__)
42     long tmp;
43     asm volatile ("evldd  %0, %2\n"
44                   "evstdd %0, %1\n"
45                   : "=&r"(tmp), "=Q"(*(volatile long*)dst)
46                   : "Q"(*(volatile long*)src));
47 #elif defined(S390) && !defined(_LP64)
48     double tmp;
49     asm volatile ("ld  %0, %2\n"
50                   "std %0, %1\n"
51                   : "=&f"(tmp), "=Q"(*(volatile double*)dst)
52                   : "Q"(*(volatile double*)src));