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Diffstat (limited to 'gdb/config/d10v/tm-d10v.h')
| -rw-r--r-- | gdb/config/d10v/tm-d10v.h | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/gdb/config/d10v/tm-d10v.h b/gdb/config/d10v/tm-d10v.h new file mode 100644 index 00000000000..ef75bc5307f --- /dev/null +++ b/gdb/config/d10v/tm-d10v.h @@ -0,0 +1,337 @@ +/* Target-specific definition for the Mitsubishi D10V + Copyright (C) 1996 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 Martin Hunt, hunt@cygnus.com */ + +#define GDB_TARGET_IS_D10V + +/* 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 + +/* these are the addresses the D10V-EVA board maps data */ +/* and instruction memory to. */ + +#define DMEM_START 0x0000000 +#define IMEM_START 0x1000000 +#define STACK_START 0x0007ffe + +#ifdef __STDC__ /* Forward decls for prototypes */ +struct frame_info; +struct frame_saved_regs; +struct type; +struct value; +#endif + +/* Advance PC across any function entry prologue instructions + to reach some "real" code. */ + +extern CORE_ADDR d10v_skip_prologue (); +#define SKIP_PROLOGUE(ip) \ + {(ip) = d10v_skip_prologue(ip);} + + +/* Stack grows downward. */ +#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) + +/* for a breakpoint, use "dbt || nop" */ +#define BREAKPOINT {0x2f, 0x90, 0x5e, 0x00} + +/* 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 4 + +#define REGISTER_NAMES \ +{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ + "r8", "r9", "r10","r11","r12", "r13", "r14","r15",\ + "psw","bpsw","pc","bpc", "cr4", "cr5", "cr6", "rpt_c",\ + "rpt_s","rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "cr15",\ + "imap0","imap1","dmap","a0", "a1"\ + } + +#define NUM_REGS 37 + +/* 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 LR_REGNUM 13 +#define SP_REGNUM 15 +#define FP_REGNUM 11 +#define PC_REGNUM 18 +#define PSW_REGNUM 16 +#define IMAP0_REGNUM 32 +#define IMAP1_REGNUM 33 +#define DMAP_REGNUM 34 +#define A0_REGNUM 35 + +/* Say how much memory is needed to store a copy of the register set */ +#define REGISTER_BYTES ((NUM_REGS-2)*2+16) + +/* Index within `registers' of the first byte of the space for + register N. */ + +#define REGISTER_BYTE(N) \ +( ((N) > A0_REGNUM) ? ( ((N)-A0_REGNUM)*8 + A0_REGNUM*2 ) : ((N) * 2) ) + +/* Number of bytes of storage in the actual machine representation + for register N. */ + +#define REGISTER_RAW_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 2 ) + +/* Number of bytes of storage in the program's representation + for register N. */ +#define REGISTER_VIRTUAL_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : ( ((N) == PC_REGNUM || (N) == SP_REGNUM) ? 4 : 2 )) + +/* Largest value REGISTER_RAW_SIZE can have. */ + +#define MAX_REGISTER_RAW_SIZE 8 + +/* Largest value REGISTER_VIRTUAL_SIZE can have. */ + +#define MAX_REGISTER_VIRTUAL_SIZE 8 + +/* Return the GDB type object for the "standard" data type + of data in register N. */ + +#define REGISTER_VIRTUAL_TYPE(N) \ +( ((N) < A0_REGNUM ) ? ((N) == PC_REGNUM || (N) == SP_REGNUM ? builtin_type_long : builtin_type_short) : builtin_type_long_long) + + +/* convert $pc and $sp to/from virtual addresses */ +#define REGISTER_CONVERTIBLE(N) ((N) == PC_REGNUM || (N) == SP_REGNUM) +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ +{ \ + ULONGEST x = extract_unsigned_integer ((FROM), REGISTER_RAW_SIZE (REGNUM)); \ + if (REGNUM == PC_REGNUM) x = (x << 2) | IMEM_START; \ + else x |= DMEM_START; \ + store_unsigned_integer ((TO), TYPE_LENGTH(TYPE), x); \ +} +#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ +{ \ + ULONGEST x = extract_unsigned_integer ((FROM), TYPE_LENGTH(TYPE)); \ + x &= 0x3ffff; \ + if (REGNUM == PC_REGNUM) x >>= 2; \ + store_unsigned_integer ((TO), 2, x); \ +} + +#define D10V_MAKE_DADDR(x) ((x) | DMEM_START) +#define D10V_MAKE_IADDR(x) (((x) << 2) | IMEM_START) + +#define D10V_DADDR_P(X) (((X) & 0x3000000) == DMEM_START) +#define D10V_IADDR_P(X) (((X) & 0x3000000) == IMEM_START) + +#define D10V_CONVERT_IADDR_TO_RAW(X) (((X) >> 2) & 0xffff) +#define D10V_CONVERT_DADDR_TO_RAW(X) ((X) & 0xffff) + +#define ARG1_REGNUM R0_REGNUM +#define ARGN_REGNUM 3 +#define RET1_REGNUM R0_REGNUM + +/* 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 the first Argument + register. */ + +#define STORE_STRUCT_RETURN(ADDR, SP) \ + { write_register (ARG1_REGNUM, (ADDR)); } + + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. + + Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */ + +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + write_register_bytes (REGISTER_BYTE(RET1_REGNUM), 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_BYTE (ARG1_REGNUM), REGISTER_RAW_SIZE (ARG1_REGNUM)) | DMEM_START) + +/* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of + EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc + and TYPE is the type (which is known to be struct, union or array). + + The d10v returns anything less than 8 bytes in size in + registers. */ + +extern use_struct_convention_fn d10v_use_struct_convention; +#define USE_STRUCT_CONVENTION(gcc_p, type) d10v_use_struct_convention (gcc_p, type) + + + +/* 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 frameless; \ + int size; + +#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ + d10v_init_extra_frame_info(fromleaf, fi) + +extern void d10v_init_extra_frame_info PARAMS (( int fromleaf, struct frame_info *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) + +#define FRAME_CHAIN(FRAME) d10v_frame_chain(FRAME) +extern int d10v_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *)); +#define FRAME_CHAIN_VALID(chain, thisframe) d10v_frame_chain_valid (chain, thisframe) +#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc) +#define FRAME_ARGS_ADDRESS(fi) (fi)->frame +#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame + +/* Immediately after a function call, return the saved pc. We can't */ +/* use frame->return_pc beause that is determined by reading R13 off the */ +/*stack and that may not be written yet. */ + +#define SAVED_PC_AFTER_CALL(frame) ((read_register(LR_REGNUM) << 2) | IMEM_START) + +/* 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) \ + d10v_frame_find_saved_regs(frame_info, &(frame_saved_regs)) + +extern void d10v_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *)); + +#define NAMES_HAVE_UNDERSCORE + + +/* DUMMY FRAMES. Need these to support inferior function calls. They + work like this on D10V: First we set a breakpoint at 0 or __start. + Then we push all the registers onto the stack. Then put the + function arguments in the proper registers and set r13 to our + breakpoint address. Finally, the PC is set to the start of the + function being called (no JSR/BSR insn). When it hits the + breakpoint, clear the break point and pop the old register contents + off the stack. */ + +extern void d10v_pop_frame PARAMS ((struct frame_info *frame)); +#define POP_FRAME generic_pop_current_frame (d10v_pop_frame) + +#define USE_GENERIC_DUMMY_FRAMES +#define CALL_DUMMY {0} +#define CALL_DUMMY_START_OFFSET (0) +#define CALL_DUMMY_BREAKPOINT_OFFSET (0) +#define CALL_DUMMY_LOCATION AT_ENTRY_POINT +#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP) +#define CALL_DUMMY_ADDRESS() entry_point_address () +extern CORE_ADDR d10v_push_return_address PARAMS ((CORE_ADDR pc, CORE_ADDR sp)); +#define PUSH_RETURN_ADDRESS(PC, SP) d10v_push_return_address (PC, SP) + +#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP) +/* #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) */ + +#define PUSH_DUMMY_FRAME generic_push_dummy_frame () + +/* override the default get_saved_register function with one that + takes account of generic CALL_DUMMY frames */ +#define GET_SAVED_REGISTER +#define get_saved_register generic_get_saved_register + +#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ + sp = d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)) +extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_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) \ +d10v_extract_return_value(TYPE, REGBUF, VALBUF) + extern void +d10v_extract_return_value PARAMS ((struct type *, char *, char *)); + + +#define REGISTER_SIZE 2 + +#ifdef CC_HAS_LONG_LONG +# define LONGEST long long +#else +# define LONGEST long +#endif +#define ULONGEST unsigned LONGEST + +void d10v_write_pc PARAMS ((CORE_ADDR val, int pid)); +CORE_ADDR d10v_read_pc PARAMS ((int pid)); +void d10v_write_sp PARAMS ((CORE_ADDR val)); +CORE_ADDR d10v_read_sp PARAMS ((void)); +void d10v_write_fp PARAMS ((CORE_ADDR val)); +CORE_ADDR d10v_read_fp PARAMS ((void)); + +#define TARGET_READ_PC(pid) d10v_read_pc (pid) +#define TARGET_WRITE_PC(val,pid) d10v_write_pc (val, pid) +#define TARGET_READ_FP() d10v_read_fp () +#define TARGET_WRITE_FP(val) d10v_write_fp (val) +#define TARGET_READ_SP() d10v_read_sp () +#define TARGET_WRITE_SP(val) d10v_write_sp (val) + +/* Number of bits in the appropriate type */ +#define TARGET_INT_BIT (2 * TARGET_CHAR_BIT) +#define TARGET_PTR_BIT (4 * TARGET_CHAR_BIT) +#define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT) +#define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT) + + +/* For the d10v when talking to the remote d10v board, GDB addresses + need to be translated into a format that the d10v rom monitor + understands. */ + +int remote_d10v_translate_xfer_address PARAMS ((CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr)); +#define REMOTE_TRANSLATE_XFER_ADDRESS(GDB_ADDR, GDB_LEN, REM_ADDR, REM_LEN) \ +(REM_LEN) = remote_d10v_translate_xfer_address ((GDB_ADDR), (GDB_LEN), &(REM_ADDR)) + |