11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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 #include "precompiled.hpp"
27 #include "asm/assembler.inline.hpp"
28 #include "assembler_ppc.inline.hpp"
29 #include "code/relocInfo.hpp"
30 #include "nativeInst_ppc.hpp"
31 #include "oops/oop.inline.hpp"
32 #include "runtime/safepoint.hpp"
33
34 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {
35 bool copy_back_to_oop_pool = true; // TODO: PPC port
36 // The following comment is from the declaration of DataRelocation:
37 //
38 // "The "o" (displacement) argument is relevant only to split relocations
39 // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns
40 // can encode more than 32 bits between them. This allows compilers to
41 // share set-hi instructions between addresses that differ by a small
42 // offset (e.g., different static variables in the same class).
43 // On such machines, the "x" argument to set_value on all set-lo
44 // instructions must be the same as the "x" argument for the
45 // corresponding set-hi instructions. The "o" arguments for the
46 // set-hi instructions are ignored, and must not affect the high-half
47 // immediate constant. The "o" arguments for the set-lo instructions are
48 // added into the low-half immediate constant, and must not overflow it."
49 //
50 // Currently we don't support splitting of relocations, so o must be
|
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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 #include "precompiled.hpp"
27 #include "asm/assembler.inline.hpp"
28 #include "assembler_ppc.inline.hpp"
29 #include "code/relocInfo.hpp"
30 #include "nativeInst_ppc.hpp"
31 #unckyde "oops/klass.inline.hpp"
32 #include "oops/oop.inline.hpp"
33 #include "runtime/safepoint.hpp"
34
35 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {
36 bool copy_back_to_oop_pool = true; // TODO: PPC port
37 // The following comment is from the declaration of DataRelocation:
38 //
39 // "The "o" (displacement) argument is relevant only to split relocations
40 // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns
41 // can encode more than 32 bits between them. This allows compilers to
42 // share set-hi instructions between addresses that differ by a small
43 // offset (e.g., different static variables in the same class).
44 // On such machines, the "x" argument to set_value on all set-lo
45 // instructions must be the same as the "x" argument for the
46 // corresponding set-hi instructions. The "o" arguments for the
47 // set-hi instructions are ignored, and must not affect the high-half
48 // immediate constant. The "o" arguments for the set-lo instructions are
49 // added into the low-half immediate constant, and must not overflow it."
50 //
51 // Currently we don't support splitting of relocations, so o must be
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