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Diffstat (limited to 'gdb/config/sh/tm-sh.h')
| -rw-r--r-- | gdb/config/sh/tm-sh.h | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/gdb/config/sh/tm-sh.h b/gdb/config/sh/tm-sh.h new file mode 100644 index 00000000000..21779094f65 --- /dev/null +++ b/gdb/config/sh/tm-sh.h @@ -0,0 +1,281 @@ +/* Target-specific definition for a Hitachi Super-H. + 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Contributed by Steve Chamberlain sac@cygnus.com */ + +#ifdef __STDC__ +struct frame_info; +struct frame_saved_regs; +struct value; +struct type; +#endif + +#define GDB_TARGET_IS_SH + +#define IEEE_FLOAT 1 + +/* Define the bit, byte, and word ordering of the machine. */ + +#define TARGET_BYTE_ORDER_SELECTABLE + + +/* 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))) + +/* Stack grows downward. */ + +#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) + +/* Illegal instruction - used by the simulator for breakpoint + detection */ + +#define BREAKPOINT {0xc3, 0xc3} /* 0xc3c3 is trapa #c3, and it works in big + and little endian modes */ + +#define BIG_REMOTE_BREAKPOINT { 0xc3, 0x20 } +#define LITTLE_REMOTE_BREAKPOINT { 0x20, 0xc3 } + +/* 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 + +/* 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 + +/* Return the GDB type object for the "standard" data type + of data in register N. */ + +#define REGISTER_VIRTUAL_TYPE(N) \ + ((((N) >= FP0_REGNUM && (N) <= FP15_REGNUM) \ + || (N) == FPUL_REGNUM) \ + ? builtin_type_float : builtin_type_int) + +/* Initializer for an array of names of registers. + Entries beyond the first NUM_REGS are ignored. */ + +extern char **sh_register_names; +#define REGISTER_NAME(i) sh_register_names[i] + +#define NUM_REGS 59 + +/* 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 R0_REGNUM 0 +#define STRUCT_RETURN_REGNUM 2 +#define ARG0_REGNUM 4 +#define ARGLAST_REGNUM 7 +#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 SR_REGNUM 22 +#define FPUL_REGNUM 23 +#define FPSCR_REGNUM 24 +#define FP0_REGNUM 25 +#define FP15_REGNUM 40 +#define SSR_REGNUM 41 +#define SPC_REGNUM 42 +#define R0B0_REGNUM 43 +#define R0B1_REGNUM 51 + +#define NUM_REALREGS 59 + +/* 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 R0 */ + +#define STORE_STRUCT_RETURN(ADDR, SP) \ + { write_register (STRUCT_RETURN_REGNUM, (ADDR)); } + +extern use_struct_convention_fn sh_use_struct_convention; +#define USE_STRUCT_CONVENTION(gcc_p, type) sh_use_struct_convention (gcc_p, type) + +/* 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. */ + +extern void sh_extract_return_value PARAMS ((struct type *, void *, void *)); +#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ + sh_extract_return_value (TYPE, REGBUF, VALBUF) + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. + + Things always get returned in R0/R1 */ + +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + write_register_bytes (REGISTER_BYTE(0), 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) \ + extract_address (REGBUF, REGISTER_RAW_SIZE (0)) + + +/* 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; \ + int leaf_function; \ + int f_offset; + +#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ + sh_init_extra_frame_info(fromleaf, fi) +extern void sh_init_extra_frame_info PARAMS ((int, struct frame_info *)); + +/* 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) + +#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 + +extern void sh_frame_find_saved_regs PARAMS ((struct frame_info *fi, + struct frame_saved_regs *fsr)); + +/* 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) \ + sh_frame_find_saved_regs(frame_info, &(frame_saved_regs)) + +#define NAMES_HAVE_UNDERSCORE + +typedef unsigned short INSN_WORD; + +extern CORE_ADDR sh_push_arguments PARAMS ((int nargs, + struct value **args, + CORE_ADDR sp, + unsigned char struct_return, + CORE_ADDR struct_addr)); + +#define USE_GENERIC_DUMMY_FRAMES +#define CALL_DUMMY {0} +#define CALL_DUMMY_LENGTH (0) +#define CALL_DUMMY_START_OFFSET (0) +#define CALL_DUMMY_BREAKPOINT_OFFSET (0) +#define FIX_CALL_DUMMY(DUMMY, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP) +#define CALL_DUMMY_LOCATION AT_ENTRY_POINT +#define CALL_DUMMY_ADDRESS() entry_point_address () +extern CORE_ADDR sh_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR)); +#define PUSH_RETURN_ADDRESS(PC, SP) sh_push_return_address (PC, SP) + + +extern CORE_ADDR sh_frame_chain PARAMS ((struct frame_info *)); +#define FRAME_CHAIN(FRAME) sh_frame_chain(FRAME) +#define PUSH_DUMMY_FRAME generic_push_dummy_frame () +#define FRAME_CHAIN_VALID(FP, FRAME) generic_frame_chain_valid (FP, FRAME) +#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP) +#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ + (SP) = sh_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) + +/* override the standard get_saved_register function with + one that takes account of generic CALL_DUMMY frames */ +#define GET_SAVED_REGISTER + +/* Discard from the stack the innermost frame, restoring all saved + registers. */ + +extern void sh_pop_frame PARAMS ((void)); +#define POP_FRAME sh_pop_frame(); + +#define NOP {0x20, 0x0b} + +#define REGISTER_SIZE 4 + +#define COERCE_FLOAT_TO_DOUBLE 1 + +#define BELIEVE_PCC_PROMOTION 1 + +/* Need this for WinGDB. See gdb/mswin/{regdoc.h, gdbwin.c, gui.cpp}. */ +#define TARGET_SH |