8318 Label done;
8319 shlq(r, LogMinObjAlignmentInBytes);
8320 jccb(Assembler::equal, done);
8321 addq(r, r12_heapbase);
8322 #if 0
8323 // alternate decoding probably a wash.
8324 testq(r, r);
8325 jccb(Assembler::equal, done);
8326 leaq(r, Address(r12_heapbase, r, Address::times_8, 0));
8327 #endif
8328 bind(done);
8329 verify_oop(r, "broken oop in decode_heap_oop");
8330 }
8331
8332 void MacroAssembler::decode_heap_oop_not_null(Register r) {
8333 assert (UseCompressedOops, "should only be used for compressed headers");
8334 assert (Universe::heap() != NULL, "java heap should be initialized");
8335 // Cannot assert, unverified entry point counts instructions (see .ad file)
8336 // vtableStubs also counts instructions in pd_code_size_limit.
8337 // Also do not verify_oop as this is called by verify_oop.
8338 if (Universe::narrow_oop_base() == NULL) {
8339 if (Universe::narrow_oop_shift() != 0) {
8340 assert (LogMinObjAlignmentInBytes == Universe::narrow_oop_shift(), "decode alg wrong");
8341 shlq(r, LogMinObjAlignmentInBytes);
8342 }
8343 } else {
8344 assert (Address::times_8 == LogMinObjAlignmentInBytes &&
8345 Address::times_8 == Universe::narrow_oop_shift(), "decode alg wrong");
8346 leaq(r, Address(r12_heapbase, r, Address::times_8, 0));
8347 }
8348 }
8349
8350 void MacroAssembler::decode_heap_oop_not_null(Register dst, Register src) {
8351 assert (UseCompressedOops, "should only be used for compressed headers");
8352 assert (Universe::heap() != NULL, "java heap should be initialized");
8353 // Cannot assert, unverified entry point counts instructions (see .ad file)
8354 // vtableStubs also counts instructions in pd_code_size_limit.
8355 // Also do not verify_oop as this is called by verify_oop.
8356 if (Universe::narrow_oop_shift() != 0) {
8357 assert (Address::times_8 == LogMinObjAlignmentInBytes &&
8358 Address::times_8 == Universe::narrow_oop_shift(), "decode alg wrong");
8359 leaq(dst, Address(r12_heapbase, src, Address::times_8, 0));
8360 } else if (dst != src) {
8361 movq(dst, src);
8362 }
8363 }
8364
8365 void MacroAssembler::set_narrow_oop(Register dst, jobject obj) {
8366 assert (UseCompressedOops, "should only be used for compressed headers");
8367 assert (Universe::heap() != NULL, "java heap should be initialized");
8368 assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
8369 int oop_index = oop_recorder()->find_index(obj);
8370 RelocationHolder rspec = oop_Relocation::spec(oop_index);
8371 mov_narrow_oop(dst, oop_index, rspec);
8372 }
8373
8374 void MacroAssembler::set_narrow_oop(Address dst, jobject obj) {
8375 assert (UseCompressedOops, "should only be used for compressed headers");
8376 assert (Universe::heap() != NULL, "java heap should be initialized");
8377 assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
8378 int oop_index = oop_recorder()->find_index(obj);
8379 RelocationHolder rspec = oop_Relocation::spec(oop_index);
8380 mov_narrow_oop(dst, oop_index, rspec);
|
8318 Label done;
8319 shlq(r, LogMinObjAlignmentInBytes);
8320 jccb(Assembler::equal, done);
8321 addq(r, r12_heapbase);
8322 #if 0
8323 // alternate decoding probably a wash.
8324 testq(r, r);
8325 jccb(Assembler::equal, done);
8326 leaq(r, Address(r12_heapbase, r, Address::times_8, 0));
8327 #endif
8328 bind(done);
8329 verify_oop(r, "broken oop in decode_heap_oop");
8330 }
8331
8332 void MacroAssembler::decode_heap_oop_not_null(Register r) {
8333 assert (UseCompressedOops, "should only be used for compressed headers");
8334 assert (Universe::heap() != NULL, "java heap should be initialized");
8335 // Cannot assert, unverified entry point counts instructions (see .ad file)
8336 // vtableStubs also counts instructions in pd_code_size_limit.
8337 // Also do not verify_oop as this is called by verify_oop.
8338 if (Universe::narrow_oop_shift() != 0) {
8339 assert (Address::times_8 == LogMinObjAlignmentInBytes &&
8340 Address::times_8 == Universe::narrow_oop_shift(), "decode alg wrong");
8341 // Don't use Shift since it modifies flags.
8342 leaq(r, Address(r12_heapbase, r, Address::times_8, 0));
8343 } else {
8344 assert (Universe::narrow_oop_base() == NULL, "sanity");
8345 }
8346 }
8347
8348 void MacroAssembler::decode_heap_oop_not_null(Register dst, Register src) {
8349 assert (UseCompressedOops, "should only be used for compressed headers");
8350 assert (Universe::heap() != NULL, "java heap should be initialized");
8351 // Cannot assert, unverified entry point counts instructions (see .ad file)
8352 // vtableStubs also counts instructions in pd_code_size_limit.
8353 // Also do not verify_oop as this is called by verify_oop.
8354 if (Universe::narrow_oop_shift() != 0) {
8355 assert (Address::times_8 == LogMinObjAlignmentInBytes &&
8356 Address::times_8 == Universe::narrow_oop_shift(), "decode alg wrong");
8357 leaq(dst, Address(r12_heapbase, src, Address::times_8, 0));
8358 } else if (dst != src) {
8359 assert (Universe::narrow_oop_base() == NULL, "sanity");
8360 movq(dst, src);
8361 }
8362 }
8363
8364 void MacroAssembler::set_narrow_oop(Register dst, jobject obj) {
8365 assert (UseCompressedOops, "should only be used for compressed headers");
8366 assert (Universe::heap() != NULL, "java heap should be initialized");
8367 assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
8368 int oop_index = oop_recorder()->find_index(obj);
8369 RelocationHolder rspec = oop_Relocation::spec(oop_index);
8370 mov_narrow_oop(dst, oop_index, rspec);
8371 }
8372
8373 void MacroAssembler::set_narrow_oop(Address dst, jobject obj) {
8374 assert (UseCompressedOops, "should only be used for compressed headers");
8375 assert (Universe::heap() != NULL, "java heap should be initialized");
8376 assert (oop_recorder() != NULL, "this assembler needs an OopRecorder");
8377 int oop_index = oop_recorder()->find_index(obj);
8378 RelocationHolder rspec = oop_Relocation::spec(oop_index);
8379 mov_narrow_oop(dst, oop_index, rspec);
|