Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/sharedRuntime.hpp
src/share/vm/runtime/sharedRuntime.hpp
- changeset 6468
- cfd05ec74089
- parent 6466
- 6a936747b569
- child 6492
- 1174c8abbdb6
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| 6467:f3806614494a | 6468:cfd05ec74089 |
|---|---|
| 364 // NULL is being passed as the second VMRegPair array, so arguments are either | 364 // NULL is being passed as the second VMRegPair array, so arguments are either |
| 365 // passed in a register OR in a stack slot. | 365 // passed in a register OR in a stack slot. |
| 366 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, VMRegPair *regs2, | 366 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, VMRegPair *regs2, |
| 367 int total_args_passed); | 367 int total_args_passed); |
| 368 | 368 |
| 369 // Compute the new number of arguments in the signature if 32 bit ints | |
| 370 // must be converted to longs. Needed if CCallingConventionRequiresIntsAsLongs | |
| 371 // is true. | |
| 372 static int convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt); | |
| 373 // Adapt a method's signature if it contains 32 bit integers that must | |
| 374 // be converted to longs. Needed if CCallingConventionRequiresIntsAsLongs | |
| 375 // is true. | |
| 376 static void convert_ints_to_longints(int i2l_argcnt, int& in_args_count, | |
| 377 BasicType*& in_sig_bt, VMRegPair*& in_regs); | |
| 378 | |
| 369 // Generate I2C and C2I adapters. These adapters are simple argument marshalling | 379 // Generate I2C and C2I adapters. These adapters are simple argument marshalling |
| 370 // blobs. Unlike adapters in the tiger and earlier releases the code in these | 380 // blobs. Unlike adapters in the tiger and earlier releases the code in these |
| 371 // blobs does not create a new frame and are therefore virtually invisible | 381 // blobs does not create a new frame and are therefore virtually invisible |
| 372 // to the stack walking code. In general these blobs extend the callers stack | 382 // to the stack walking code. In general these blobs extend the callers stack |
| 373 // as needed for the conversion of argument locations. | 383 // as needed for the conversion of argument locations. |
| 376 // by the time we reach the blob there is compiled code available. This allows | 386 // by the time we reach the blob there is compiled code available. This allows |
| 377 // the blob to pass the incoming stack pointer (the sender sp) in a known | 387 // the blob to pass the incoming stack pointer (the sender sp) in a known |
| 378 // location for the interpreter to record. This is used by the frame code | 388 // location for the interpreter to record. This is used by the frame code |
| 379 // to correct the sender code to match up with the stack pointer when the | 389 // to correct the sender code to match up with the stack pointer when the |
| 380 // thread left the compiled code. In addition it allows the interpreter | 390 // thread left the compiled code. In addition it allows the interpreter |
| 381 // to remove the space the c2i adapter allocated to do it argument conversion. | 391 // to remove the space the c2i adapter allocated to do its argument conversion. |
| 382 | 392 |
| 383 // Although a c2i blob will always run interpreted even if compiled code is | 393 // Although a c2i blob will always run interpreted even if compiled code is |
| 384 // present if we see that compiled code is present the compiled call site | 394 // present if we see that compiled code is present the compiled call site |
| 385 // will be patched/re-resolved so that later calls will run compiled. | 395 // will be patched/re-resolved so that later calls will run compiled. |
| 386 | 396 |
