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Diffstat (limited to 'gdb/tm-arm.h')
| -rw-r--r-- | gdb/tm-arm.h | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/gdb/tm-arm.h b/gdb/tm-arm.h deleted file mode 100644 index 42263dc..0000000 --- a/gdb/tm-arm.h +++ /dev/null @@ -1,400 +0,0 @@ -/* Definitions to make GDB target for an ARM under RISCiX (4.3bsd). - Copyright 1986, 1987, 1989, 1991, 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. */ - -#define TARGET_BYTE_ORDER LITTLE_ENDIAN - -/* IEEE format floating point */ - -#define IEEE_FLOAT - -/* I provide my own xfer_core_file to cope with shared libraries */ - -#define XFER_CORE_FILE - -/* 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. */ - -#define SKIP_PROLOGUE(pc) pc = skip_prologue(pc) - -/* 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. */ - -#define SAVED_PC_AFTER_CALL(frame) (read_register (LR_REGNUM) & 0x03fffffc) - -/* I don't know the real values for these. */ -#define TARGET_UPAGES UPAGES -#define TARGET_NBPG NBPG - -/* Address of end of stack space. */ - -#define STACK_END_ADDR (0x01000000 - (TARGET_UPAGES * TARGET_NBPG)) - -/* Stack grows downward. */ - -#define INNER_THAN < - -/* Sequence of bytes for breakpoint instruction. */ - -#define BREAKPOINT {0x00,0x00,0x18,0xef} /* BKPT_SWI from <sys/ptrace.h> */ - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 0 - -/* Nonzero if instruction at PC is a return instruction. */ - -#define ABOUT_TO_RETURN(pc) \ - ((read_memory_integer(pc, 4) & 0x0fffffff == 0x01b0f00e) || \ - (read_memory_integer(pc, 4) & 0x0ffff800 == 0x09eba800)) - -/* Return 1 if P points to an invalid floating point value. - LEN is the length in bytes. */ - -#define INVALID_FLOAT(p, len) 0 - -/* code to execute to print interesting information about the - * floating point processor (if any) - * No need to define if there is nothing to do. - */ -#define FLOAT_INFO { arm_float_info (); } - -/* Say how long (ordinary) registers are. */ - -#define REGISTER_TYPE long - -/* Number of machine registers */ - -/* Note: I make a fake copy of the pc in register 25 (calling it ps) so - that I can clear the status bits from pc (register 15) */ - -#define NUM_REGS 26 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -#define REGISTER_NAMES \ - { "a1", "a2", "a3", "a4", \ - "v1", "v2", "v3", "v4", "v5", "v6", \ - "sl", "fp", "ip", "sp", "lr", "pc", \ - "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "fps", "ps" } - -/* 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 AP_REGNUM 11 -#define FP_REGNUM 11 /* Contains address of executing stack frame */ -#define SP_REGNUM 13 /* Contains address of top of stack */ -#define LR_REGNUM 14 /* address to return to from a function call */ -#define PC_REGNUM 15 /* Contains program counter */ -#define F0_REGNUM 16 /* first floating point register */ -#define FPS_REGNUM 24 /* floating point status register */ -#define PS_REGNUM 25 /* Contains processor status */ - - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES (16*4 + 12*8 + 4 + 4) - -/* Index within `registers' of the first byte of the space for - register N. */ - -#define REGISTER_BYTE(N) (((N) < F0_REGNUM) ? (N)*4 : \ - (((N) < PS_REGNUM) ? 16*4 + ((N) - 16)*12 : \ - 16*4 + 8*12 + ((N) - FPS_REGNUM) * 4)) - -/* Number of bytes of storage in the actual machine representation - for register N. On the vax, all regs are 4 bytes. */ - -#define REGISTER_RAW_SIZE(N) (((N) < F0_REGNUM || (N) >= FPS_REGNUM) ? 4 : 12) - -/* Number of bytes of storage in the program's representation - for register N. On the vax, all regs are 4 bytes. */ - -#define REGISTER_VIRTUAL_SIZE(N) (((N) < F0_REGNUM || (N) >= FPS_REGNUM) ? 4 : 8) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 12 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 8 - -/* Nonzero if register N requires conversion - from raw format to virtual format. */ - -#define REGISTER_CONVERTIBLE(N) ((unsigned)(N) - F0_REGNUM < 8) - -/* Convert data from raw format for register REGNUM - to virtual format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \ - if (REGISTER_CONVERTIBLE(REGNUM)) \ - convert_from_extended((FROM), (TO)); \ - else \ - bcopy ((FROM), (TO), 4); - -/* Convert data from virtual format for register REGNUM - to raw format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \ - if (REGISTER_CONVERTIBLE(REGNUM)) \ - convert_to_extended((FROM), (TO)); \ - else \ - bcopy ((FROM), (TO), 4); - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) \ - (((unsigned)(N) - F0_REGNUM) < 8 ? builtin_type_double : builtin_type_int) - -/* The system C compiler uses a similar structure return convention to gcc */ - -#define USE_STRUCT_CONVENTION(gcc_p, type) (TYPE_LENGTH (type) > 4) - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ - -#define STORE_STRUCT_RETURN(ADDR, SP) \ - { write_register (0, (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) \ - if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \ - convert_from_extended(REGBUF + REGISTER_BYTE (F0_REGNUM), VALBUF); \ - else \ - bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE)) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) { \ - char _buf[MAX_REGISTER_RAW_SIZE]; \ - convert_to_extended(VALBUF, _buf); \ - write_register_bytes (REGISTER_BYTE (F0_REGNUM), _buf, MAX_REGISTER_RAW_SIZE); \ - } else \ - write_register_bytes (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) (*(int *)(REGBUF)) - -/* Specify that for the native compiler variables for a particular - lexical context are listed after the beginning LBRAC instead of - before in the executables list of symbols. */ -#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) (!(gcc_p)) - - -/* Describe the pointer in each stack frame to the previous stack frame - (its caller). */ - -/* FRAME_CHAIN takes a frame's nominal address - and produces the frame's chain-pointer. - - However, if FRAME_CHAIN_VALID returns zero, - it means the given frame is the outermost one and has no caller. */ - -/* In the case of the ARM, the frame's nominal address is the FP value, - and 12 bytes before comes the saved previous FP value as a 4-byte word. */ - -#define FRAME_CHAIN(thisframe) \ - ((thisframe)->pc >= first_object_file_end ? \ - read_memory_integer ((thisframe)->frame - 12, 4) :\ - 0) - -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (FRAME_SAVED_PC (thisframe) >= first_object_file_end)) - -/* Define other aspects of the stack frame. */ - -/* 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) \ -{ \ - CORE_ADDR func_start, after_prologue; \ - func_start = (get_pc_function_start ((FI)->pc) + \ - FUNCTION_START_OFFSET); \ - after_prologue = func_start; \ - SKIP_PROLOGUE (after_prologue); \ - (FRAMELESS) = (after_prologue == func_start); \ -} - -/* Saved Pc. */ - -#define FRAME_SAVED_PC(FRAME) \ - (read_memory_integer ((FRAME)->frame - 4, 4) & 0x03fffffc) - -#define FRAME_ARGS_ADDRESS(fi) (fi->frame) - -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -#define FRAME_NUM_ARGS(numargs, fi) (numargs = -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) \ -{ \ - register int regnum; \ - register int frame; \ - register int next_addr; \ - register int return_data_save; \ - register int saved_register_mask; \ - bzero (&frame_saved_regs, sizeof frame_saved_regs); \ - frame = (frame_info)->frame; \ - return_data_save = read_memory_integer(frame, 4) & 0x03fffffc - 12; \ - saved_register_mask = \ - read_memory_integer(return_data_save, 4); \ - next_addr = frame - 12; \ - for (regnum = 4; regnum < 10; regnum++) \ - if (saved_register_mask & (1<<regnum)) { \ - next_addr -= 4; \ - (frame_saved_regs).regs[regnum] = next_addr; \ - } \ - if (read_memory_integer(return_data_save + 4, 4) == 0xed6d7103) { \ - next_addr -= 12; \ - (frame_saved_regs).regs[F0_REGNUM + 7] = next_addr; \ - } \ - if (read_memory_integer(return_data_save + 8, 4) == 0xed6d6103) { \ - next_addr -= 12; \ - (frame_saved_regs).regs[F0_REGNUM + 6] = next_addr; \ - } \ - if (read_memory_integer(return_data_save + 12, 4) == 0xed6d5103) { \ - next_addr -= 12; \ - (frame_saved_regs).regs[F0_REGNUM + 5] = next_addr; \ - } \ - if (read_memory_integer(return_data_save + 16, 4) == 0xed6d4103) { \ - next_addr -= 12; \ - (frame_saved_regs).regs[F0_REGNUM + 4] = next_addr; \ - } \ - (frame_saved_regs).regs[SP_REGNUM] = next_addr; \ - (frame_saved_regs).regs[PC_REGNUM] = frame - 4; \ - (frame_saved_regs).regs[PS_REGNUM] = frame - 4; \ - (frame_saved_regs).regs[FP_REGNUM] = frame - 12; \ -} - -/* Things needed for making the inferior call functions. */ - -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME \ -{ \ - register CORE_ADDR sp = read_register (SP_REGNUM); \ - register int regnum; \ - /* opcode for ldmdb fp,{v1-v6,fp,ip,lr,pc}^ */ \ - sp = push_word(sp, 0xe92dbf0); /* dummy return_data_save ins */ \ - /* push a pointer to the dummy instruction minus 12 */ \ - sp = push_word(sp, read_register (SP_REGNUM) - 16); \ - sp = push_word(sp, read_register (PS_REGNUM)); \ - sp = push_word(sp, read_register (SP_REGNUM)); \ - sp = push_word(sp, read_register (FP_REGNUM)); \ - for (regnum = 9; regnum >= 4; regnum --) \ - sp = push_word(sp, read_register (regnum)); \ - write_register (FP_REGNUM, read_register (SP_REGNUM) - 8); \ - write_register (SP_REGNUM, sp); } - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME \ -{ \ - register CORE_ADDR fp = read_register (FP_REGNUM); \ - register unsigned long return_data_save = \ - read_memory_integer ( (read_memory_integer (fp, 4) & \ - 0x03fffffc) - 12, 4); \ - register int regnum; \ - write_register (PS_REGNUM, read_memory_integer (fp - 4, 4)); \ - write_register (PC_REGNUM, read_register (PS_REGNUM) & 0x03fffffc); \ - write_register (SP_REGNUM, read_memory_integer (fp - 8, 4)); \ - write_register (FP_REGNUM, read_memory_integer (fp - 12, 4)); \ - fp -= 12; \ - for (regnum = 9; regnum >= 4; regnum--) \ - if (return_data_save & (1<<regnum)) { \ - fp -= 4; \ - write_register (regnum, read_memory_integer(fp, 4)); \ - } \ - flush_cached_frames (); \ - set_current_frame (create_new_frame (read_register (FP_REGNUM), \ - read_pc ())); \ -} - -/* This sequence of words is the instructions - - ldmia sp!,{a1-a4} - mov lk,pc - bl *+8 - swi bkpt_swi - - Note this is 16 bytes. */ - -#define CALL_DUMMY {0xe8bd000f, 0xe1a0e00f, 0xeb000000, 0xef180000} - -#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */ - -/* Insert the specified number of args and function address - into a call sequence of the above form stored at DUMMYNAME. */ - -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ -{ \ - register enum type_code code = TYPE_CODE (type); \ - register nargs_in_registers, struct_return = 0; \ - /* fix the load-arguments mask to move the first 4 or less arguments \ - into a1-a4 but make sure the structure return address in a1 is \ - not disturbed if the function is returning a structure */ \ - if ((code == TYPE_CODE_STRUCT || \ - code == TYPE_CODE_UNION || \ - code == TYPE_CODE_ARRAY) && \ - TYPE_LENGTH (type) > 4) { \ - nargs_in_registers = min(nargs + 1, 4); \ - struct_return = 1; \ - } else \ - nargs_in_registers = min(nargs, 4); \ - *(char *) dummyname = (1 << nargs_in_registers) - 1 - struct_return; \ - *(int *)((char *) dummyname + 8) = \ - (((fun - (pc + 16)) / 4) & 0x00ffffff) | 0xeb000000; } |