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comparison src/share/vm/asm/codeBuffer.hpp @ 7206:d2f8c38e543d

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Merge
author roland
date Fri, 07 Dec 2012 01:09:03 -0800
parents cd3d6a6b95d9
children a5de0cc2f91c
comparison
equal deleted inserted replaced
7191:816b7e5bf2ed 7206:d2f8c38e543d
23 */ 23 */
24 24
25 #ifndef SHARE_VM_ASM_CODEBUFFER_HPP 25 #ifndef SHARE_VM_ASM_CODEBUFFER_HPP
26 #define SHARE_VM_ASM_CODEBUFFER_HPP 26 #define SHARE_VM_ASM_CODEBUFFER_HPP
27 27
28 #include "asm/assembler.hpp"
29 #include "code/oopRecorder.hpp" 28 #include "code/oopRecorder.hpp"
30 #include "code/relocInfo.hpp" 29 #include "code/relocInfo.hpp"
31 30
32 class CodeComments; 31 class CodeComments;
33 class AbstractAssembler; 32 class PhaseCFG;
34 class MacroAssembler; 33 class Compile;
35 class PhaseCFG; 34 class BufferBlob;
36 class Compile; 35 class CodeBuffer;
37 class BufferBlob; 36 class Label;
38 class CodeBuffer;
39 37
40 class CodeOffsets: public StackObj { 38 class CodeOffsets: public StackObj {
41 public: 39 public:
42 enum Entries { Entry, 40 enum Entries { Entry,
43 Verified_Entry, 41 Verified_Entry,
192 assert(allocates2(pc), "relocation addr must be in this section"); 190 assert(allocates2(pc), "relocation addr must be in this section");
193 _locs_point = pc; 191 _locs_point = pc;
194 } 192 }
195 193
196 // Code emission 194 // Code emission
197 void emit_int8 (int8_t x) { *((int8_t*) end()) = x; set_end(end() + 1); } 195 void emit_int8 ( int8_t x) { *((int8_t*) end()) = x; set_end(end() + sizeof(int8_t)); }
198 void emit_int16(int16_t x) { *((int16_t*) end()) = x; set_end(end() + 2); } 196 void emit_int16( int16_t x) { *((int16_t*) end()) = x; set_end(end() + sizeof(int16_t)); }
199 void emit_int32(int32_t x) { *((int32_t*) end()) = x; set_end(end() + 4); } 197 void emit_int32( int32_t x) { *((int32_t*) end()) = x; set_end(end() + sizeof(int32_t)); }
200 void emit_int64(int64_t x) { *((int64_t*) end()) = x; set_end(end() + 8); } 198 void emit_int64( int64_t x) { *((int64_t*) end()) = x; set_end(end() + sizeof(int64_t)); }
199
200 void emit_float( jfloat x) { *((jfloat*) end()) = x; set_end(end() + sizeof(jfloat)); }
201 void emit_double(jdouble x) { *((jdouble*) end()) = x; set_end(end() + sizeof(jdouble)); }
202 void emit_address(address x) { *((address*) end()) = x; set_end(end() + sizeof(address)); }
201 203
202 // Share a scratch buffer for relocinfo. (Hacky; saves a resource allocation.) 204 // Share a scratch buffer for relocinfo. (Hacky; saves a resource allocation.)
203 void initialize_shared_locs(relocInfo* buf, int length); 205 void initialize_shared_locs(relocInfo* buf, int length);
204 206
205 // Manage labels and their addresses. 207 // Manage labels and their addresses.
449 static int locator_sect(int locator) { return locator & sect_mask; } 451 static int locator_sect(int locator) { return locator & sect_mask; }
450 static int locator(int pos, int sect) { return (pos << sect_bits) | sect; } 452 static int locator(int pos, int sect) { return (pos << sect_bits) | sect; }
451 int locator(address addr) const; 453 int locator(address addr) const;
452 address locator_address(int locator) const; 454 address locator_address(int locator) const;
453 455
456 // Heuristic for pre-packing the taken/not-taken bit of a predicted branch.
457 bool is_backward_branch(Label& L);
458
454 // Properties 459 // Properties
455 const char* name() const { return _name; } 460 const char* name() const { return _name; }
456 CodeBuffer* before_expand() const { return _before_expand; } 461 CodeBuffer* before_expand() const { return _before_expand; }
457 BufferBlob* blob() const { return _blob; } 462 BufferBlob* blob() const { return _blob; }
458 void set_blob(BufferBlob* blob); 463 void set_blob(BufferBlob* blob);