bridges/source/cpp_uno/gcc3_freebsd_x86-64/abi.hxx

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  30
  31 #ifndef _BRIDGES_CPP_UNO_X86_64_ABI_HXX_
  32 #define _BRIDGES_CPP_UNO_X86_64_ABI_HXX_
  33
  34 // This is an implementation of the x86-64 ABI as described in 'System V
  35 // Application Binary Interface, AMD64 Architecture Processor Supplement'
  36 // (http://www.x86-64.org/documentation/abi-0.95.pdf)
  37
  38 #include <typelib/typedescription.hxx>
  39
  40 namespace x86_64
  41 {
  42
  43 /* 6 general purpose registers are used for parameter passing */
  44 const sal_uInt32 MAX_GPR_REGS = 6;
  45
  46 /* 8 SSE registers are used for parameter passing */
  47 const sal_uInt32 MAX_SSE_REGS = 8;
  48
  49 /* Count number of required registers.
  50
  51  Examine the argument and return set number of register required in each
  52  class.
  53
  54  Return false iff parameter should be passed in memory.
  55 */
  56 bool examine_argument( typelib_TypeDescriptionReference *pTypeRef, bool bInReturn, int &nUsedGPR, int &nUsedSSE );
  57
  58 /** Does function that returns this type use a hidden parameter, or registers?
  59
  60  The value can be returned either in a hidden 1st parameter (which is a
  61  pointer to a structure allocated by the caller), or in registers (rax, rdx
  62  for the integers, xmm0, xmm1 for the floating point numbers).
  63 */
  64 bool return_in_hidden_param( typelib_TypeDescriptionReference *pTypeRef );
  65
  66 void fill_struct( typelib_TypeDescriptionReference *pTypeRef, void * const *pGPR, void * const *pSSE, void *pStruct );
  67
  68 } // namespace x86_64
  69
  70 #endif // _BRIDGES_CPP_UNO_X86_64_ABI_HXX_