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Diffstat (limited to 'gdb/config/sh/tm-sh.h')
| -rw-r--r-- | gdb/config/sh/tm-sh.h | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/gdb/config/sh/tm-sh.h b/gdb/config/sh/tm-sh.h new file mode 100644 index 0000000000..af2a0236a2 --- /dev/null +++ b/gdb/config/sh/tm-sh.h @@ -0,0 +1,239 @@ +/* Parameters for execution on a Hitachi Super-H machine. + Copyright (C) 1993 Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Contributed by Steve Chamberlain sac@cygnus.com */ + +#define GDB_TARGET_IS_SH + +#define IEEE_FLOAT 1 + +/* Define the bit, byte, and word ordering of the machine. */ + +#define TARGET_BYTE_ORDER BIG_ENDIAN + + +/* Offset from address of function to start of its code. + Zero on most machines. */ + +#define FUNCTION_START_OFFSET 0 + +/* Advance PC across any function entry prologue instructions + to reach some "real" code. */ + +extern CORE_ADDR sh_skip_prologue (); +#define SKIP_PROLOGUE(ip) \ + {(ip) = sh_skip_prologue(ip);} + + +/* Immediately after a function call, return the saved pc. + Can't always go through the frames for this because on some machines + the new frame is not set up until the new function executes + some instructions. + + The return address is the value saved in the PR register + 4 */ + +#define SAVED_PC_AFTER_CALL(frame) \ + (ADDR_BITS_REMOVE(read_register(PR_REGNUM))+4) + +/* Stack grows downward. */ + +#define INNER_THAN < + +/* Illegal instruction - used by the simulator for breakpoint + detection */ + +#define BREAKPOINT {0xc3, 0xff} /* 0xc3ff is trapa #ff */ + + +/* If your kernel resets the pc after the trap happens you may need to + define this before including this file. */ +#define DECR_PC_AFTER_BREAK 0 + +/* Nonzero if instruction at PC is a return instruction. */ +#define ABOUT_TO_RETURN(pc) (read_memory_integer(pc,2) == 0x000b) + +/* Return 1 if P points to an invalid floating point value. */ + +#define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */ + +/* Say how long registers are. */ +#define REGISTER_TYPE long + +/* Say how much memory is needed to store a copy of the register set */ +#define REGISTER_BYTES (NUM_REGS*4) + +/* Index within `registers' of the first byte of the space for + register N. */ + +#define REGISTER_BYTE(N) ((N)*4) + +/* Number of bytes of storage in the actual machine representation + for register N. */ + +#define REGISTER_RAW_SIZE(N) 4 + +#define REGISTER_VIRTUAL_SIZE(N) 4 + +/* Largest value REGISTER_RAW_SIZE can have. */ + +#define MAX_REGISTER_RAW_SIZE 4 + +/* Largest value REGISTER_VIRTUAL_SIZE can have. */ + +#define MAX_REGISTER_VIRTUAL_SIZE 4 + +/* Nonzero if register N requires conversion + from raw format to virtual format. */ + +#define REGISTER_CONVERTIBLE(N) (0) + +/* Convert data from raw format for register REGNUM + to virtual format for register REGNUM. */ + +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \ + { memcpy ((TO), (FROM), 4); } + +/* Convert data from virtual format for register REGNUM + to raw format for register REGNUM. */ + +#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \ + { memcpy ((TO), (FROM), 4); } + +/* Return the GDB type object for the "standard" data type + of data in register N. */ + +#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int + +/* Initializer for an array of names of registers. + Entries beyond the first NUM_REGS are ignored. */ + +#define REGISTER_NAMES \ + {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ + "r8", "r9", "r10","r11","r12","r13","r14","r15",\ + "pc", "pr","gbr","vbr","mach","macl","sr","ticks","cycles","insts" } + +#define NUM_REGS 25 + +/* Register numbers of various important registers. + Note that some of these values are "real" register numbers, + and correspond to the general registers of the machine, + and some are "phony" register numbers which are too large + to be actual register numbers as far as the user is concerned + but do serve to get the desired values when passed to read_register. */ + +#define FP_REGNUM 14 +#define SP_REGNUM 15 +#define PC_REGNUM 16 +#define PR_REGNUM 17 +#define GBR_REGNUM 18 +#define VBR_REGNUM 19 +#define MACH_REGNUM 20 +#define MACL_REGNUM 21 +#define CR_REGNUM 22 + +/* Store the address of the place in which to copy the structure the + subroutine will return. This is called from call_function. + + We store structs through a pointer passed in R4 */ + +#define STORE_STRUCT_RETURN(ADDR, SP) \ + { write_register (4, (ADDR)); } + +/* Extract from an array REGBUF containing the (raw) register state + a function return value of type TYPE, and copy that, in virtual format, + into VALBUF. */ + +#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ + bcopy ((char *)(REGBUF), VALBUF, TYPE_LENGTH(TYPE)) + + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. + + Things always get returned in R4/R5 */ + +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + write_register_bytes (REGISTER_BYTE(4), VALBUF, TYPE_LENGTH (TYPE)) + + +/* Extract from an array REGBUF containing the (raw) register state + the address in which a function should return its structure value, + as a CORE_ADDR (or an expression that can be used as one). */ + +#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(CORE_ADDR *)(REGBUF)) + + +/* Define other aspects of the stack frame. + we keep a copy of the worked out return pc lying around, since it + is a useful bit of info */ + +#define EXTRA_FRAME_INFO \ + CORE_ADDR return_pc; + +#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ + init_extra_frame_info(fromleaf, fi) + +/* A macro that tells us whether the function invocation represented + by FI does not have a frame on the stack associated with it. If it + does not, FRAMELESS is set to 1, else 0. */ + +#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ + (FRAMELESS) = frameless_look_for_prologue(FI) + +CORE_ADDR h8500_frame_chain (/* FRAME thisframe */); + +#define FRAME_CHAIN(FRAME) sh_frame_chain(FRAME) +#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc) +#define FRAME_ARGS_ADDRESS(fi) (fi)->frame +#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame + +/* Set VAL to the number of args passed to frame described by FI. + Can set VAL to -1, meaning no way to tell. */ + +/* We can't tell how many args there are */ + +#define FRAME_NUM_ARGS(val,fi) (val = -1) + +/* Return number of bytes at start of arglist that are not really args. */ + +#define FRAME_ARGS_SKIP 0 + +/* Put here the code to store, into a struct frame_saved_regs, + the addresses of the saved registers of frame described by FRAME_INFO. + This includes special registers such as pc and fp saved in special + ways in the stack frame. sp is even more special: + the address we return for it IS the sp for the next frame. */ + +#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ + frame_find_saved_regs(frame_info, &(frame_saved_regs)) + +#define NAMES_HAVE_UNDERSCORE + +typedef unsigned short INSN_WORD; + +#define ADDR_BITS_REMOVE(addr) ((addr) & 0xfffff) +#define ADDR_BITS_SET(addr) (addr) + +#define CALL_DUMMY_LENGTH 10 + +/* Discard from the stack the innermost frame, + restoring all saved registers. */ + +#define POP_FRAME pop_frame(); + |
