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comparison src/share/vm/asm/codeBuffer.hpp @ 4059:44ce519bc3d1

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7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer Reviewed-by: kvn, jrose, twisti
author never
date Tue, 08 Nov 2011 10:31:53 -0800
parents 1d1603768966
children da91efe96a93
comparison
equal deleted inserted replaced
4058:59e515ee9354 4059:44ce519bc3d1
360 void freeze_section(CodeSection* cs); 360 void freeze_section(CodeSection* cs);
361 361
362 // helper for CodeBuffer::expand() 362 // helper for CodeBuffer::expand()
363 void take_over_code_from(CodeBuffer* cs); 363 void take_over_code_from(CodeBuffer* cs);
364 364
365 #ifdef ASSERT
366 // ensure sections are disjoint, ordered, and contained in the blob 365 // ensure sections are disjoint, ordered, and contained in the blob
367 bool verify_section_allocation(); 366 void verify_section_allocation();
368 #endif
369 367
370 // copies combined relocations to the blob, returns bytes copied 368 // copies combined relocations to the blob, returns bytes copied
371 // (if target is null, it is a dry run only, just for sizing) 369 // (if target is null, it is a dry run only, just for sizing)
372 csize_t copy_relocations_to(CodeBlob* blob) const; 370 csize_t copy_relocations_to(CodeBlob* blob) const;
373 371
391 // (1) code buffer referring to pre-allocated instruction memory 389 // (1) code buffer referring to pre-allocated instruction memory
392 CodeBuffer(address code_start, csize_t code_size) { 390 CodeBuffer(address code_start, csize_t code_size) {
393 assert(code_start != NULL, "sanity"); 391 assert(code_start != NULL, "sanity");
394 initialize_misc("static buffer"); 392 initialize_misc("static buffer");
395 initialize(code_start, code_size); 393 initialize(code_start, code_size);
396 assert(verify_section_allocation(), "initial use of buffer OK"); 394 verify_section_allocation();
397 } 395 }
398 396
399 // (2) CodeBuffer referring to pre-allocated CodeBlob. 397 // (2) CodeBuffer referring to pre-allocated CodeBlob.
400 CodeBuffer(CodeBlob* blob); 398 CodeBuffer(CodeBlob* blob);
401 399
543 // Transform an address from the code in this code buffer to a specified code buffer 541 // Transform an address from the code in this code buffer to a specified code buffer
544 address transform_address(const CodeBuffer &cb, address addr) const; 542 address transform_address(const CodeBuffer &cb, address addr) const;
545 543
546 void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; 544 void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN;
547 545
546 // Log a little info about section usage in the CodeBuffer
547 void log_section_sizes(const char* name);
548
548 #ifndef PRODUCT 549 #ifndef PRODUCT
549 public: 550 public:
550 // Printing / Decoding 551 // Printing / Decoding
551 // decodes from decode_begin() to code_end() and sets decode_begin to end 552 // decodes from decode_begin() to code_end() and sets decode_begin to end
552 void decode(); 553 void decode();