a33f755889
(vax_call_dummy_words): New. (sizeof_vax_call_dummy_words): New. (vax_fix_call_dummy): New function. (vax_saved_pc_after_call): Ditto. * config/vax/tm-vax.h: Don't include regcache.h. (SAVED_PC_AFTER_CALL): Use vax_saved_pc_after_call. (CALL_DUMMY): Remove. (CALL_DUMMY_WORDS): Define. (SIZEOF_CALL_DUMMY_WORDS): Define. (FIX_CALL_DUMMY): Use vax_fix_call_dummy.
190 lines
6.7 KiB
C
190 lines
6.7 KiB
C
/* Definitions to make GDB run on a vax under 4.2bsd.
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Copyright 1986, 1987, 1989, 1991, 1993, 1994, 1996, 1998, 1999, 2000, 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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/* 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 2
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extern CORE_ADDR vax_skip_prologue (CORE_ADDR);
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#define SKIP_PROLOGUE(pc) (vax_skip_prologue (pc))
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#define SAVED_PC_AFTER_CALL(frame) vax_saved_pc_after_call ((frame))
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extern CORE_ADDR vax_saved_pc_after_call (struct frame_info *);
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#define TARGET_UPAGES 14
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#define TARGET_NBPG 512
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#define STACK_END_ADDR (0x80000000 - (TARGET_UPAGES * TARGET_NBPG))
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/* On the VAX, sigtramp is in the u area. Can't check the exact
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addresses because for cross-debugging we don't have VAX include
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files around. This should be close enough. */
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#define SIGTRAMP_START(pc) STACK_END_ADDR
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#define SIGTRAMP_END(pc) 0x80000000
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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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/* Sequence of bytes for breakpoint instruction. */
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#define BREAKPOINT {3}
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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 17
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/* Return the name of the register specified by N. */
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#define REGISTER_NAME(N) vax_register_name ((N))
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extern char *vax_register_name (int);
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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 AP_REGNUM 12
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#define FP_REGNUM 13 /* Contains address of executing stack frame */
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#define SP_REGNUM 14 /* Contains address of top of stack */
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#define PC_REGNUM 15 /* Contains program counter */
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#define PS_REGNUM 16 /* Contains processor status */
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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 (17*4)
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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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#define REGISTER_BYTE(N) vax_register_byte ((N))
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extern int vax_register_byte (int);
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/* Number of bytes of storage in the actual machine representation
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for register N. On the vax, all regs are 4 bytes. */
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#define REGISTER_RAW_SIZE(N) vax_register_raw_size ((N))
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extern int vax_register_raw_size (int);
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/* Number of bytes of storage in the program's representation
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for register N. On the vax, all regs are 4 bytes. */
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#define REGISTER_VIRTUAL_SIZE(N) vax_register_virtual_size ((N))
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extern int vax_register_virtual_size (int);
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/* Largest value REGISTER_RAW_SIZE can have. */
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#define MAX_REGISTER_RAW_SIZE 4
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/* Largest value REGISTER_VIRTUAL_SIZE can have. */
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#define MAX_REGISTER_VIRTUAL_SIZE 4
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/* Return the GDB type object for the "standard" data type
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of data in register N. */
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#define REGISTER_VIRTUAL_TYPE(N) vax_register_virtual_type ((N))
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extern struct type *vax_register_virtual_type (int);
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#define STORE_STRUCT_RETURN(ADDR, SP) vax_store_struct_return ((ADDR), (SP))
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extern void vax_store_struct_return (CORE_ADDR, CORE_ADDR);
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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vax_extract_return_value ((TYPE), (REGBUF), (VALBUF))
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extern void vax_extract_return_value (struct type *, char *, char *);
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#define STORE_RETURN_VALUE(TYPE,VALBUF) \
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vax_store_return_value ((TYPE), (VALBUF))
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extern void vax_store_return_value (struct type *, char *);
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#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
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vax_extract_struct_value_address ((REGBUF))
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extern CORE_ADDR vax_extract_struct_value_address (char *);
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#define FRAME_CHAIN(FI) vax_frame_chain ((FI))
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extern CORE_ADDR vax_frame_chain (struct frame_info *);
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#define FRAMELESS_FUNCTION_INVOCATION(FI) \
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generic_frameless_function_invocation_not ((FI))
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/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
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/* XXXJRT should go away */
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#define SIGCONTEXT_PC_OFFSET 12
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#define FRAME_SAVED_PC(FRAME) vax_frame_saved_pc ((FRAME))
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extern CORE_ADDR vax_frame_saved_pc (struct frame_info *);
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/* XXXJRT not yet under gdbarch control */
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#define FRAME_ARGS_ADDRESS_CORRECT(fi) vax_frame_args_address ((fi))
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extern CORE_ADDR vax_frame_args_address (struct frame_info *);
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#define FRAME_ARGS_ADDRESS(fi) vax_frame_args_address ((fi))
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extern CORE_ADDR vax_frame_args_address (struct frame_info *);
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#define FRAME_LOCALS_ADDRESS(fi) vax_frame_locals_address ((fi))
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extern CORE_ADDR vax_frame_locals_address (struct frame_info *);
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extern int vax_frame_num_args (struct frame_info *fi);
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#define FRAME_NUM_ARGS(fi) (vax_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 4
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#define FRAME_INIT_SAVED_REGS(fi) vax_frame_init_saved_regs ((fi))
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extern void vax_frame_init_saved_regs (struct frame_info *);
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#define PUSH_DUMMY_FRAME vax_push_dummy_frame()
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extern void vax_push_dummy_frame (void);
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#define POP_FRAME vax_pop_frame()
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extern void vax_pop_frame (void);
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#define CALL_DUMMY_WORDS vax_call_dummy_words
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extern LONGEST vax_call_dummy_words[];
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#define SIZEOF_CALL_DUMMY_WORDS sizeof_vax_call_dummy_words
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extern int sizeof_vax_call_dummy_words;
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struct value;
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#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
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vax_fix_call_dummy ((dummyname), (pc), (fun), (nargs), (args), (type), \
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(gcc_p))
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extern void vax_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int,
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struct value **, struct type *, int);
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#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
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#define CALL_DUMMY_BREAKPOINT_OFFSET 7
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/* If vax pcc says CHAR or SHORT, it provides the correct address. */
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#define BELIEVE_PCC_PROMOTION 1
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