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src/hotspot/cpu/ppc/stubRoutines_ppc.hpp

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rev 53441 : 8217459: [PPC64] Cleanup non-vector version of CRC32
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  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef CPU_PPC_STUBROUTINES_PPC_HPP
  27 #define CPU_PPC_STUBROUTINES_PPC_HPP
  28 
  29 // This file holds the platform specific parts of the StubRoutines
  30 // definition. See stubRoutines.hpp for a description on how to
  31 // extend it.
  32 
  33 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
  34 
  35 enum platform_dependent_constants {
  36   code_size1 = 20000,          // simply increase if too small (assembler will crash if too small)
  37   code_size2 = 24000           // simply increase if too small (assembler will crash if too small)
  38 };
  39 
  40 // CRC32 Intrinsics.
  41 #define CRC32_COLUMN_SIZE 256
  42 #define CRC32_BYFOUR
  43 #ifdef  CRC32_BYFOUR
  44   #define CRC32_TABLES 8
  45 #else
  46   #define CRC32_TABLES 1
  47 #endif
  48 
  49 #define REVERSE_CRC32_POLY  0xEDB88320
  50 #define REVERSE_CRC32C_POLY 0x82F63B78
  51 #define INVERSE_REVERSE_CRC32_POLY  0x1aab14226ull
  52 #define INVERSE_REVERSE_CRC32C_POLY 0x105fd79bdull
  53 #define CRC32_UNROLL_FACTOR 2048
  54 #define CRC32_UNROLL_FACTOR2 8
  55 
  56 
  57 class ppc64 {
  58  friend class StubGenerator;
  59 
  60  private:
  61 
  62   // CRC32 Intrinsics.
  63   static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
  64   static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
  65   static juint *_crc_constants;
  66   static juint *_crc32c_constants;
  67 
  68  public:
  69 
  70   // CRC32 Intrinsics.
  71   static address crc_constants() { return (address)_crc_constants; }
  72   static address crc32c_constants() { return (address)_crc32c_constants; }
  73   static juint* generate_crc_constants(juint reverse_poly);
  74 };
  75 
  76 #endif // CPU_PPC_STUBROUTINES_PPC_HPP


  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef CPU_PPC_STUBROUTINES_PPC_HPP
  27 #define CPU_PPC_STUBROUTINES_PPC_HPP
  28 
  29 // This file holds the platform specific parts of the StubRoutines
  30 // definition. See stubRoutines.hpp for a description on how to
  31 // extend it.
  32 
  33 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
  34 
  35 enum platform_dependent_constants {
  36   code_size1 = 20000,          // simply increase if too small (assembler will crash if too small)
  37   code_size2 = 24000           // simply increase if too small (assembler will crash if too small)
  38 };
  39 
  40 // CRC32 Intrinsics.
  41 #define CRC32_TABLE_SIZE (4 * 256)







  42 #define REVERSE_CRC32_POLY  0xEDB88320
  43 #define REVERSE_CRC32C_POLY 0x82F63B78
  44 #define INVERSE_REVERSE_CRC32_POLY  0x1aab14226ull
  45 #define INVERSE_REVERSE_CRC32C_POLY 0x105fd79bdull
  46 #define CRC32_UNROLL_FACTOR 2048
  47 #define CRC32_UNROLL_FACTOR2 8
  48 
  49 static address generate_crc_constants(juint reverse_poly);


















  50 
  51 #endif // CPU_PPC_STUBROUTINES_PPC_HPP
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