9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 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 #include "precompiled.hpp" 26 #include "asm/macroAssembler.hpp" 27 #include "code/relocInfo.hpp" 28 #include "nativeInst_x86.hpp" 29 #include "oops/klass.inline.hpp" 30 #include "oops/oop.inline.hpp" 31 #include "runtime/safepoint.hpp" 32 #include "runtime/safepointMechanism.hpp" 33 34 35 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) { 36 #ifdef AMD64 37 x += o; 38 typedef Assembler::WhichOperand WhichOperand; 39 WhichOperand which = (WhichOperand) format(); // that is, disp32 or imm, call32, narrow oop 40 assert(which == Assembler::disp32_operand || 41 which == Assembler::narrow_oop_operand || 42 which == Assembler::imm_operand, "format unpacks ok"); 43 if (which == Assembler::imm_operand) { 44 if (verify_only) { 45 guarantee(*pd_address_in_code() == x, "instructions must match"); 46 } else { 47 *pd_address_in_code() = x; 48 } 49 } else if (which == Assembler::narrow_oop_operand) { 50 address disp = Assembler::locate_operand(addr(), which); 51 // both compressed oops and compressed classes look the same 52 if (Universe::heap()->is_in_reserved((oop)x)) { 53 if (verify_only) { 54 guarantee(*(uint32_t*) disp == oopDesc::encode_heap_oop((oop)x), "instructions must match"); 55 } else { 56 *(int32_t*) disp = oopDesc::encode_heap_oop((oop)x); 57 } 58 } else { 59 if (verify_only) { 60 guarantee(*(uint32_t*) disp == Klass::encode_klass((Klass*)x), "instructions must match"); 61 } else { 62 *(int32_t*) disp = Klass::encode_klass((Klass*)x); 63 } 64 } 65 } else { 66 // Note: Use runtime_call_type relocations for call32_operand. 67 address ip = addr(); 68 address disp = Assembler::locate_operand(ip, which); 69 address next_ip = Assembler::locate_next_instruction(ip); 70 if (verify_only) { 71 guarantee(*(int32_t*) disp == (x - next_ip), "instructions must match"); 72 } else { 73 *(int32_t*) disp = x - next_ip; 74 } 75 } 76 #else | 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 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 #include "precompiled.hpp" 26 #include "asm/macroAssembler.hpp" 27 #include "code/relocInfo.hpp" 28 #include "nativeInst_x86.hpp" 29 #include "oops/compressedOops.inline.hpp" 30 #include "oops/klass.inline.hpp" 31 #include "oops/oop.inline.hpp" 32 #include "runtime/safepoint.hpp" 33 #include "runtime/safepointMechanism.hpp" 34 35 36 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) { 37 #ifdef AMD64 38 x += o; 39 typedef Assembler::WhichOperand WhichOperand; 40 WhichOperand which = (WhichOperand) format(); // that is, disp32 or imm, call32, narrow oop 41 assert(which == Assembler::disp32_operand || 42 which == Assembler::narrow_oop_operand || 43 which == Assembler::imm_operand, "format unpacks ok"); 44 if (which == Assembler::imm_operand) { 45 if (verify_only) { 46 guarantee(*pd_address_in_code() == x, "instructions must match"); 47 } else { 48 *pd_address_in_code() = x; 49 } 50 } else if (which == Assembler::narrow_oop_operand) { 51 address disp = Assembler::locate_operand(addr(), which); 52 // both compressed oops and compressed classes look the same 53 if (Universe::heap()->is_in_reserved((oop)x)) { 54 if (verify_only) { 55 guarantee(*(uint32_t*) disp == CompressedOops::encode((oop)x), "instructions must match"); 56 } else { 57 *(int32_t*) disp = CompressedOops::encode((oop)x); 58 } 59 } else { 60 if (verify_only) { 61 guarantee(*(uint32_t*) disp == Klass::encode_klass((Klass*)x), "instructions must match"); 62 } else { 63 *(int32_t*) disp = Klass::encode_klass((Klass*)x); 64 } 65 } 66 } else { 67 // Note: Use runtime_call_type relocations for call32_operand. 68 address ip = addr(); 69 address disp = Assembler::locate_operand(ip, which); 70 address next_ip = Assembler::locate_next_instruction(ip); 71 if (verify_only) { 72 guarantee(*(int32_t*) disp == (x - next_ip), "instructions must match"); 73 } else { 74 *(int32_t*) disp = x - next_ip; 75 } 76 } 77 #else |