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Diffstat (limited to 'gdb/config/i386/tm-i386.h')
| -rw-r--r-- | gdb/config/i386/tm-i386.h | 307 |
1 files changed, 0 insertions, 307 deletions
diff --git a/gdb/config/i386/tm-i386.h b/gdb/config/i386/tm-i386.h deleted file mode 100644 index e2039e5..0000000 --- a/gdb/config/i386/tm-i386.h +++ /dev/null @@ -1,307 +0,0 @@ -/* Macro definitions for GDB on an Intel i[345]86. - Copyright (C) 1995, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#ifndef TM_I386_H -#define TM_I386_H 1 - -#ifdef __STDC__ /* Forward decl's for prototypes */ -struct frame_info; -struct frame_saved_regs; -struct type; -#endif - -#define TARGET_BYTE_ORDER LITTLE_ENDIAN - -/* Used for example in valprint.c:print_floating() to enable checking - for NaN's */ - -#define IEEE_FLOAT - -/* Number of traps that happen between exec'ing the shell to run an - inferior, and when we finally get to the inferior code. This is 2 - on most implementations. */ - -#define START_INFERIOR_TRAPS_EXPECTED 2 - -/* 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(frompc) {(frompc) = i386_skip_prologue((frompc));} - -extern int i386_skip_prologue PARAMS ((int)); - -/* 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_memory_integer (read_register (SP_REGNUM), 4)) - -/* Stack grows downward. */ - -#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) - -/* Sequence of bytes for breakpoint instruction. */ - -#define BREAKPOINT {0xcc} - -/* 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 1 - -/* Say how long (ordinary) registers are. This is a piece of bogosity - used in push_word and a few other places; REGISTER_RAW_SIZE is the - real way to know how big a register is. */ - -#define REGISTER_SIZE 4 - -/* Number of machine registers */ - -#define NUM_FREGS 0 /*8*/ /* Number of FP regs */ -#define NUM_REGS (16 + NUM_FREGS) /* Basic i*86 regs + FP regs */ - -/* Initializer for an array of names of registers. There should be at least - NUM_REGS strings in this initializer. Any excess ones are simply ignored. - The order of the first 8 registers must match the compiler's numbering - scheme (which is the same as the 386 scheme) and also regmap in the various - *-nat.c files. */ - -#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ - "esp", "ebp", "esi", "edi", \ - "eip", "eflags", "cs", "ss", \ - "ds", "es", "fs", "gs", \ - "st0", "st1", "st2", "st3", \ - "st4", "st5", "st6", "st7", \ - } - -/* 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 5 /* (ebp) Contains address of executing stack frame */ -#define SP_REGNUM 4 /* (usp) Contains address of top of stack */ -#define PC_REGNUM 8 /* (eip) Contains program counter */ -#define PS_REGNUM 9 /* (ps) Contains processor status */ - -#define FP0_REGNUM 16 /* (st0) 387 register */ -#define FPC_REGNUM 25 /* 80387 control register */ - -/* Total amount of space needed to store our copies of the machine's register - state, the array `registers'. */ - -#define REGISTER_BYTES ((NUM_REGS - NUM_FREGS)*4 + NUM_FREGS*10) - -/* Index within `registers' of the first byte of the space for register N. */ - -#define REGISTER_BYTE(N) \ - (((N) < FP0_REGNUM) ? ((N) * 4) : ((((N) - FP0_REGNUM) * 10) + 64)) - -/* Number of bytes of storage in the actual machine representation for - register N. All registers are 4 bytes, except 387 st(0) - st(7), - which are 80 bits each. */ - -#define REGISTER_RAW_SIZE(N) (((N) < FP0_REGNUM) ? 4 : 10) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 10 - -/* Number of bytes of storage in the program's representation - for register N. */ - -#define REGISTER_VIRTUAL_SIZE(N) (((N) < FP0_REGNUM) ? 4 : 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. Perhaps si and di should go here, but potentially they - could be used for things other than address. */ - -#define REGISTER_VIRTUAL_TYPE(N) \ - (((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM) \ - ? lookup_pointer_type (builtin_type_void) \ - : (((N) < FP0_REGNUM) \ - ? builtin_type_int \ - : builtin_type_double)) - -/* 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) \ - { char buf[REGISTER_SIZE]; \ - (SP) -= sizeof (ADDR); \ - store_address (buf, sizeof (ADDR), ADDR); \ - write_memory ((SP), buf, sizeof (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) \ - i386_extract_return_value ((TYPE),(REGBUF),(VALBUF)) - -extern void i386_extract_return_value PARAMS ((struct type *, char [], char *)); - -/* 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) \ - write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF), \ - TYPE_LENGTH (TYPE)); \ - 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)) - -/* The following redefines make backtracing through sigtramp work. - They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp - from the sigcontext structure which is pushed by the kernel on the - user stack, along with a pointer to it. */ - -/* FRAME_CHAIN takes a frame's nominal address and produces the frame's - chain-pointer. - In the case of the i386, the frame's nominal address - is the address of a 4-byte word containing the calling frame's address. */ - -#define FRAME_CHAIN(thisframe) \ - ((thisframe)->signal_handler_caller \ - ? (thisframe)->frame \ - : (!inside_entry_file ((thisframe)->pc) \ - ? read_memory_integer ((thisframe)->frame, 4) \ - : 0)) - -/* 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) \ - do { \ - if ((FI)->signal_handler_caller) \ - (FRAMELESS) = 0; \ - else \ - (FRAMELESS) = frameless_look_for_prologue(FI); \ - } while (0) - -/* Saved Pc. Get it from sigcontext if within sigtramp. */ - -#define FRAME_SAVED_PC(FRAME) \ - (((FRAME)->signal_handler_caller \ - ? sigtramp_saved_pc (FRAME) \ - : read_memory_integer ((FRAME)->frame + 4, 4)) \ - ) - -extern CORE_ADDR sigtramp_saved_pc PARAMS ((struct frame_info *)); - -#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, which is typical now that the C compiler delays popping them. */ - -#define FRAME_NUM_ARGS(numargs, fi) (numargs) = i386_frame_num_args(fi) - -extern int i386_frame_num_args PARAMS ((struct frame_info *)); - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 8 - -/* 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) \ -{ i386_frame_find_saved_regs ((frame_info), &(frame_saved_regs)); } - -extern void i386_frame_find_saved_regs PARAMS ((struct frame_info *, - struct frame_saved_regs *)); - - -/* Things needed for making the inferior call functions. */ - -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME { i386_push_dummy_frame (); } - -extern void i386_push_dummy_frame PARAMS ((void)); - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME { i386_pop_frame (); } - -extern void i386_pop_frame PARAMS ((void)); - - -/* this is - * call 11223344 (32 bit relative) - * int3 - */ - -#define CALL_DUMMY { 0x223344e8, 0xcc11 } - -#define CALL_DUMMY_LENGTH 8 - -#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */ - -#define CALL_DUMMY_BREAKPOINT_OFFSET 5 - -/* 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) \ -{ \ - int from, to, delta, loc; \ - loc = (int)(read_register (SP_REGNUM) - CALL_DUMMY_LENGTH); \ - from = loc + 5; \ - to = (int)(fun); \ - delta = to - from; \ - *((char *)(dummyname) + 1) = (delta & 0xff); \ - *((char *)(dummyname) + 2) = ((delta >> 8) & 0xff); \ - *((char *)(dummyname) + 3) = ((delta >> 16) & 0xff); \ - *((char *)(dummyname) + 4) = ((delta >> 24) & 0xff); \ -} - -extern void print_387_control_word PARAMS ((unsigned int)); -extern void print_387_status_word PARAMS ((unsigned int)); - -/* Offset from SP to first arg on stack at first instruction of a function */ - -#define SP_ARG0 (1 * 4) - -#endif /* ifndef TM_I386_H */ |