tm-i960.h

来自「模拟嵌入式硬件平台的软件源代码」· C头文件 代码 · 共 346 行 · 第 1/2 页

// OBSOLETE 
// OBSOLETE extern use_struct_convention_fn i960_use_struct_convention;
// OBSOLETE #define USE_STRUCT_CONVENTION(gcc_p, type) i960_use_struct_convention (gcc_p, type)
// OBSOLETE 
// OBSOLETE /* Extract from an array REGBUF containing the (raw) register state
// OBSOLETE    a function return value of type TYPE, and copy that, in virtual format,
// OBSOLETE    into VALBUF.  This is only called if USE_STRUCT_CONVENTION for this
// OBSOLETE    type is 0.
// OBSOLETE 
// OBSOLETE    On the i960 we just take as many bytes as we need from G0 through G3.  */
// OBSOLETE 
// OBSOLETE #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
// OBSOLETE 	memcpy(VALBUF, REGBUF+REGISTER_BYTE(G0_REGNUM), TYPE_LENGTH (TYPE))
// OBSOLETE 
// OBSOLETE /* If USE_STRUCT_CONVENTION produces a 1, 
// OBSOLETE    extract from an array REGBUF containing the (raw) register state
// OBSOLETE    the address in which a function should return its structure value,
// OBSOLETE    as a CORE_ADDR (or an expression that can be used as one).
// OBSOLETE 
// OBSOLETE    Address of where to put structure was passed in in global
// OBSOLETE    register g13 on entry.  God knows what's in g13 now.  The
// OBSOLETE    (..., 0) below is to make it appear to return a value, though
// OBSOLETE    actually all it does is call error().  */
// OBSOLETE 
// OBSOLETE #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
// OBSOLETE    (error("Don't know where large structure is returned on i960"), 0)
// OBSOLETE 
// OBSOLETE /* Write into appropriate registers a function return value
// OBSOLETE    of type TYPE, given in virtual format, for "value returning" functions.
// OBSOLETE 
// OBSOLETE    For 'return' command:  not (yet) implemented for i960.  */
// OBSOLETE 
// OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \
// OBSOLETE     error ("Returning values from functions is not implemented in i960 gdb")
// OBSOLETE 
// OBSOLETE /* Store the address of the place in which to copy the structure the
// OBSOLETE    subroutine will return.  This is called from call_function. */
// OBSOLETE 
// OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) \
// OBSOLETE     error ("Returning values from functions is not implemented in i960 gdb")
// OBSOLETE 
// OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame
// OBSOLETE    (its caller).  */
// OBSOLETE 
// OBSOLETE /* FRAME_CHAIN takes a frame's nominal address
// OBSOLETE    and produces the frame's chain-pointer.
// OBSOLETE 
// OBSOLETE    However, if FRAME_CHAIN_VALID returns zero,
// OBSOLETE    it means the given frame is the outermost one and has no caller.  */
// OBSOLETE 
// OBSOLETE /* We cache information about saved registers in the frame structure,
// OBSOLETE    to save us from having to re-scan function prologues every time
// OBSOLETE    a register in a non-current frame is accessed.  */
// OBSOLETE 
// OBSOLETE #define EXTRA_FRAME_INFO 	\
// OBSOLETE 	struct frame_saved_regs *fsr;	\
// OBSOLETE 	CORE_ADDR arg_pointer;
// OBSOLETE 
// OBSOLETE /* Zero the frame_saved_regs pointer when the frame is initialized,
// OBSOLETE    so that FRAME_FIND_SAVED_REGS () will know to allocate and
// OBSOLETE    initialize a frame_saved_regs struct the first time it is called.
// OBSOLETE    Set the arg_pointer to -1, which is not valid; 0 and other values
// OBSOLETE    indicate real, cached values.  */
// OBSOLETE 
// OBSOLETE #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
// OBSOLETE 	((fi)->fsr = 0, (fi)->arg_pointer = -1)
// OBSOLETE 
// OBSOLETE /* On the i960, we get the chain pointer by reading the PFP saved
// OBSOLETE    on the stack and clearing the status bits.  */
// OBSOLETE 
// OBSOLETE #define FRAME_CHAIN(thisframe) \
// OBSOLETE   (read_memory_integer (FRAME_FP(thisframe), 4) & ~0xf)
// OBSOLETE 
// OBSOLETE /* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one
// OBSOLETE    and has no caller.
// OBSOLETE 
// OBSOLETE    On the i960, each various target system type must define FRAME_CHAIN_VALID,
// OBSOLETE    since it differs between NINDY and VxWorks, the two currently supported
// OBSOLETE    targets types.  We leave it undefined here.  */
// OBSOLETE 
// OBSOLETE 
// OBSOLETE /* A macro that tells us whether the function invocation represented
// OBSOLETE    by FI does not have a frame on the stack associated with it.  If it
// OBSOLETE    does not, FRAMELESS is set to 1, else 0.  */
// OBSOLETE 
// OBSOLETE CORE_ADDR leafproc_return (CORE_ADDR ip);
// OBSOLETE #define FRAMELESS_FUNCTION_INVOCATION(FI) \
// OBSOLETE   (leafproc_return ((FI)->pc) != 0)
// OBSOLETE 
// OBSOLETE /* Note that in the i960 architecture the return pointer is saved in the
// OBSOLETE    *caller's* stack frame.
// OBSOLETE 
// OBSOLETE    Make sure to zero low-order bits because of bug in 960CA A-step part
// OBSOLETE    (instruction addresses should always be word-aligned anyway).  */
// OBSOLETE 
// OBSOLETE #define FRAME_SAVED_PC(frame) \
// OBSOLETE 			((read_memory_integer(FRAME_CHAIN(frame)+8,4)) & ~3)
// OBSOLETE 
// OBSOLETE /* On the i960, FRAME_ARGS_ADDRESS should return the value of
// OBSOLETE    g14 as passed into the frame, if known.  We need a function for this.
// OBSOLETE    We cache this value in the frame info if we've already looked it up.  */
// OBSOLETE 
// OBSOLETE #define FRAME_ARGS_ADDRESS(fi) 	\
// OBSOLETE   (((fi)->arg_pointer != -1)? (fi)->arg_pointer: frame_args_address (fi, 0))
// OBSOLETE extern CORE_ADDR frame_args_address ();		/* i960-tdep.c */
// OBSOLETE 
// OBSOLETE /* This is the same except it should return 0 when
// OBSOLETE    it does not really know where the args are, rather than guessing.
// OBSOLETE    This value is not cached since it is only used infrequently.  */
// OBSOLETE 
// OBSOLETE #define	FRAME_ARGS_ADDRESS_CORRECT(fi)	(frame_args_address (fi, 1))
// OBSOLETE 
// OBSOLETE #define FRAME_LOCALS_ADDRESS(fi)	(fi)->frame
// OBSOLETE 
// OBSOLETE /* Set NUMARGS to the number of args passed to a frame.
// OBSOLETE    Can return -1, meaning no way to tell.  */
// OBSOLETE 
// OBSOLETE #define FRAME_NUM_ARGS(fi)	(-1)
// OBSOLETE 
// OBSOLETE /* Return number of bytes at start of arglist that are not really args.  */
// OBSOLETE 
// OBSOLETE #define FRAME_ARGS_SKIP 0
// OBSOLETE 
// OBSOLETE /* Produce the positions of the saved registers in a stack frame.  */
// OBSOLETE 
// OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info_addr, sr) \
// OBSOLETE 	frame_find_saved_regs (frame_info_addr, &sr)
// OBSOLETE extern void frame_find_saved_regs ();	/* See i960-tdep.c */
// OBSOLETE 
// OBSOLETE /* Things needed for making calls to functions in the inferior process */
// OBSOLETE 
// OBSOLETE /* Push an empty stack frame, to record the current ip, etc.
// OBSOLETE 
// OBSOLETE    Not (yet?) implemented for i960.  */
// OBSOLETE 
// OBSOLETE #define PUSH_DUMMY_FRAME	\
// OBSOLETE error("Function calls into the inferior process are not supported on the i960")
// OBSOLETE 
// OBSOLETE /* Discard from the stack the innermost frame, restoring all registers.  */
// OBSOLETE 
// OBSOLETE 
// OBSOLETE void i960_pop_frame (void);
// OBSOLETE #define POP_FRAME \
// OBSOLETE 	i960_pop_frame ()
// OBSOLETE 
// OBSOLETE 
// OBSOLETE /* This sequence of words is the instructions
// OBSOLETE 
// OBSOLETE    callx 0x00000000
// OBSOLETE    fmark
// OBSOLETE  */
// OBSOLETE 
// OBSOLETE /* #define CALL_DUMMY { 0x86003000, 0x00000000, 0x66003e00 } */
// OBSOLETE 
// OBSOLETE 																			    /* #define CALL_DUMMY_START_OFFSET 0 *//* Start execution at beginning of dummy */
// OBSOLETE 
// OBSOLETE /* Indicate that we don't support calling inferior child functions.  */
// OBSOLETE 
// OBSOLETE #undef CALL_DUMMY
// OBSOLETE 
// OBSOLETE /* Insert the specified number of args and function address
// OBSOLETE    into a call sequence of the above form stored at 'dummyname'.
// OBSOLETE 
// OBSOLETE    Ignore arg count on i960.  */
// OBSOLETE 
// OBSOLETE /* #define FIX_CALL_DUMMY(dummyname, fun, nargs) *(((int *)dummyname)+1) = fun */
// OBSOLETE 
// OBSOLETE #undef FIX_CALL_DUMMY
// OBSOLETE 
// OBSOLETE 
// OBSOLETE /* Interface definitions for kernel debugger KDB */
// OBSOLETE /* (Not relevant to i960.) */