7bcc927b94
ns32k_fix_call_dummy): New. * config/ns32k/tm-umax.h (CALL_DUMMY_WORDS): Define as ns32k_call_dummy_words. (SIZEOF_CALL_DUMMY_WORDS): Define as sizeof_ns32k_call_dummy_words. (CALL_DUMMY, CALL_DUMMY_LENGTH, CALL_DUMMY_ADDR, CALL_DUMMY_NARGS): Remove. (FIX_CALL_DUMMY): Define as ns32k_fix_call_dummy.
206 lines
7.3 KiB
C
206 lines
7.3 KiB
C
/* Definitions to make GDB run on an encore under umax 4.2
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Copyright 1987, 1989, 1991, 1993, 1994, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "regcache.h"
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/* Need to get function ends by adding this to epilogue address from .bf
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record, not using x_fsize field. */
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#define FUNCTION_EPILOGUE_SIZE 4
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/* Offset from address of function to start of its code.
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Zero on most machines. */
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#define FUNCTION_START_OFFSET 0
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/* Advance PC across any function entry prologue instructions
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to reach some "real" code. */
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extern CORE_ADDR umax_skip_prologue (CORE_ADDR);
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#define SKIP_PROLOGUE(pc) (umax_skip_prologue (pc))
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/* Immediately after a function call, return the saved pc.
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Can't always go through the frames for this because on some machines
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the new frame is not set up until the new function executes
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some instructions. */
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#define SAVED_PC_AFTER_CALL(frame) \
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read_memory_integer (read_register (SP_REGNUM), 4)
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/* Address of end of stack space. */
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#ifndef STACK_END_ADDR
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#define STACK_END_ADDR (0xfffff000)
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#endif
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/* Stack grows downward. */
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#define INNER_THAN(lhs,rhs) core_addr_lessthan ((lhs), (rhs))
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extern const unsigned char *ns32k_breakpoint_from_pc (CORE_ADDR *, int *);
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#define BREAKPOINT_FROM_PC(PCP, LENP) ns32k_breakpoint_from_pc ((PCP), (LENP))
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/* Amount PC must be decremented by after a breakpoint.
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This is often the number of bytes in BREAKPOINT
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but not always. */
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#define DECR_PC_AFTER_BREAK 0
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/* Say how long (ordinary) registers are. This is a piece of bogosity
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used in push_word and a few other places; REGISTER_RAW_SIZE is the
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real way to know how big a register is. */
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#define REGISTER_SIZE 4
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/* Number of machine registers */
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#define NUM_REGS 25
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#define NUM_GENERAL_REGS 8
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extern char *ns32k_register_name_32082 (int);
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extern char *ns32k_register_name_32382 (int);
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#define REGISTER_NAME(REGNUM) ns32k_register_name_32082(REGNUM)
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/* Register numbers of various important registers.
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Note that some of these values are "real" register numbers,
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and correspond to the general registers of the machine,
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and some are "phony" register numbers which are too large
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to be actual register numbers as far as the user is concerned
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but do serve to get the desired values when passed to read_register. */
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#define R0_REGNUM 0 /* General register 0 */
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#define FP0_REGNUM 8 /* Floating point register 0 */
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#define SP_REGNUM 16 /* Contains address of top of stack */
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#define AP_REGNUM FP_REGNUM
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#define FP_REGNUM 17 /* Contains address of executing stack frame */
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#define PC_REGNUM 18 /* Contains program counter */
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#define PS_REGNUM 19 /* Contains processor status */
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#define FPS_REGNUM 20 /* Floating point status register */
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#define LP0_REGNUM 21 /* Double register 0 (same as FP0) */
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/* Total amount of space needed to store our copies of the machine's
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register state, the array `registers'. */
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#define REGISTER_BYTES \
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((NUM_REGS - 4) * REGISTER_RAW_SIZE(R0_REGNUM) \
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+ 4 * REGISTER_RAW_SIZE(LP0_REGNUM))
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/* Index within `registers' of the first byte of the space for
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register N. */
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extern int ns32k_register_byte_32082 (int);
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extern int ns32k_register_byte_32382 (int);
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#define REGISTER_BYTE(N) ns32k_register_byte_32082 ((N))
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extern int ns32k_register_raw_size (int);
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#define REGISTER_RAW_SIZE(N) ns32k_register_raw_size ((N))
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extern int ns32k_register_virtual_size (int);
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#define REGISTER_VIRTUAL_SIZE(N) ns32k_register_virtual_size ((N))
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/* Largest value REGISTER_RAW_SIZE can have. */
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#define MAX_REGISTER_RAW_SIZE 8
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/* Largest value REGISTER_VIRTUAL_SIZE can have. */
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#define MAX_REGISTER_VIRTUAL_SIZE 8
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struct type *ns32k_register_virtual_type (int);
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#define REGISTER_VIRTUAL_TYPE(N) ns32k_register_virtual_type ((N))
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/* Store the address of the place in which to copy the structure the
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subroutine will return. This is called from call_function.
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On this machine this is a no-op, because gcc isn't used on it
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yet. So this calling convention is not used. */
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#define STORE_STRUCT_RETURN(ADDR, SP)
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/* Extract from an array REGBUF containing the (raw) register state
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a function return value of type TYPE, and copy that, in virtual format,
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into VALBUF. */
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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memcpy (VALBUF, REGBUF+REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 0), TYPE_LENGTH (TYPE))
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/* Write into appropriate registers a function return value
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of type TYPE, given in virtual format. */
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#define STORE_RETURN_VALUE(TYPE,VALBUF) \
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write_register_bytes (REGISTER_BYTE (TYPE_CODE (TYPE) == TYPE_CODE_FLT ? FP0_REGNUM : 0), VALBUF, TYPE_LENGTH (TYPE))
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/* Extract from an array REGBUF containing the (raw) register state
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the address in which a function should return its structure value,
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as a CORE_ADDR (or an expression that can be used as one). */
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#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF))
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/* Describe the pointer in each stack frame to the previous stack frame
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(its caller). */
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CORE_ADDR ns32k_frame_chain (struct frame_info *);
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#define FRAME_CHAIN(thisframe) ns32k_frame_chain ((thisframe))
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CORE_ADDR ns32k_frame_saved_pc (struct frame_info *);
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#define FRAME_SAVED_PC(FRAME) ns32k_frame_saved_pc ((FRAME))
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CORE_ADDR ns32k_frame_args_address (struct frame_info *);
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#define FRAME_ARGS_ADDRESS(fi) ns32k_frame_args_address ((fi))
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CORE_ADDR ns32k_frame_locals_address (struct frame_info *);
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#define FRAME_LOCALS_ADDRESS(fi) ns32k_frame_locals_address ((fi))
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/* Return number of args passed to a frame.
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Can return -1, meaning no way to tell. */
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extern int umax_frame_num_args (struct frame_info *);
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#define FRAME_NUM_ARGS(fi) (umax_frame_num_args ((fi)))
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/* Return number of bytes at start of arglist that are not really args. */
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#define FRAME_ARGS_SKIP 8
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void ns32k_frame_init_saved_regs (struct frame_info *);
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#define FRAME_INIT_SAVED_REGS(FI) ns32k_frame_init_saved_regs ((FI))
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/* Things needed for making the inferior call functions. */
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extern void ns32k_push_dummy_frame (void);
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#define PUSH_DUMMY_FRAME ns32k_push_dummy_frame ()
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extern void ns32k_pop_frame (void);
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#define POP_FRAME ns32k_pop_frame ()
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extern LONGEST ns32k_call_dummy_words[];
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#define CALL_DUMMY_WORDS ns32k_call_dummy_words
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extern int sizeof_ns32k_call_dummy_words;
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#define SIZEOF_CALL_DUMMY_WORDS sizeof_ns32k_call_dummy_words
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#define CALL_DUMMY_START_OFFSET 3
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struct value;
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struct type;
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extern void ns32k_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int,
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struct value **, struct type *, int);
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#define FIX_CALL_DUMMY(dummy, pc, fun, nargs, args, type, gcc_p) \
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ns32k_fix_call_dummy ((dummy), (pc), (fun), (nargs), (args), (type), (gcc_p))
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