ine REG_PARM_STACK_SPACE(FNDECL) ix86_reg_parm_stack_space (FNDECL)

#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) \
  (TARGET_64BIT && ix86_function_type_abi (FNTYPE) == MS_ABI)

/* Define how to find the value returned by a library function
   assuming the value has mode MODE.  */

#define LIBCALL_VALUE(MODE) ix86_libcall_value (MODE)

/* Define the size of the result block used for communication between
   untyped_call and untyped_return.  The block contains a DImode value
   followed by the block used by fnsave and frstor.  */

#define APPLY_RESULT_SIZE (8+108)

/* 1 if N is a possible register number for function argument passing.  */
#define FUNCTION_ARG_REGNO_P(N) ix86_function_arg_regno_p (N)

/* Define a data type for recording info about an argument list
   during the scan of that argument list.  This data type should
   hold all necessary information about the function itself
   and about the args processed so far, enough to enable macros
   such as FUNCTION_ARG to determine where the next arg should go.  */

typedef struct ix86_args {
  int words;			/* # words passed so far */
  int nregs;			/* # registers available for passing */
  int regno;			/* next available register number */
  int fastcall;			/* fastcall or thiscall calling convention
				   is used */
  int sse_words;		/* # sse words passed so far */
  int sse_nregs;		/* # sse registers available for passing */
  int warn_avx512f;		/* True when we want to warn
				   about AVX512F ABI.  */
  int warn_avx;			/* True when we want to warn about AVX ABI.  */
  int warn_sse;			/* True when we want to warn about SSE ABI.  */
  int warn_mmx;			/* True when we want to warn about MMX ABI.  */
  int warn_empty;		/* True when we want to warn about empty classes
				   passing ABI change.  */
  int sse_regno;		/* next available sse register number */
  int mmx_words;		/* # mmx words passed so far */
  int mmx_nregs;		/* # mmx registers available for passing */
  int mmx_regno;		/* next available mmx register number */
  int maybe_vaarg;		/* true for calls to possibly vardic fncts.  */
  int caller;			/* true if it is caller.  */
  int float_in_sse;		/* Set to 1 or 2 for 32bit targets if
				   SFmode/DFmode arguments should be passed
				   in SSE registers.  Otherwise 0.  */
  int stdarg;                   /* Set to 1 if function is stdarg.  */
  enum calling_abi call_abi;	/* Set to SYSV_ABI for sysv abi. Otherwise
 				   MS_ABI for ms abi.  */
  tree decl;			/* Callee decl.  */
} CUMULATIVE_ARGS;

/* Initialize a variable CUM of type CUMULATIVE_ARGS
   for a call to a function whose data type is FNTYPE.
   For a library call, FNTYPE is 0.  */

#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
  init_cumulative_args (&(CUM), (FNTYPE), (LIBNAME), (FNDECL), \
			(N_NAMED_ARGS) != -1)

/* Output assembler code to FILE to increment profiler label # LABELNO
   for profiling a function entry.  */

#define FUNCTION_PROFILER(FILE, LABELNO) \
  x86_function_profiler ((FILE), (LABELNO))

#define MCOUNT_NAME "_mcount"

#define MCOUNT_NAME_BEFORE_PROLOGUE "__fentry__"

#define PROFILE_COUNT_REGISTER "edx"

/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
   the stack pointer does not matter.  The value is tested only in
   functions that have frame pointers.
   No definition is equivalent to always zero.  */
/* Note on the 386 it might be more efficient not to define this since
   we have to restore it ourselves from the frame pointer, in order to
   use pop */

#define EXIT_IGNORE_STACK 1

/* Define this macro as a C expression that is nonzero for registers
   used by the epilogue or the `return' pattern.  */

#define EPILOGUE_USES(REGNO) ix86_epilogue_uses (REGNO)

/* Output assembler code for a block containing the constant parts
   of a trampoline, leaving space for the variable parts.  */

/* On the 386, the trampoline contains two instructions:
     mov #STATIC,ecx
     jmp FUNCTION
   The trampoline is generated entirely at runtime.  The operand of JMP
   is the address of FUNCTION relative to the instruction following the
   JMP (which is 5 bytes long).  */

/* Length in units of the trampoline for entering a nested function.  */

#define TRAMPOLINE_SIZE (TARGET_64BIT ? 28 : 14)