| /* Macro definitions for i386, Unix System V. |
| Copyright 1986, 1987, 1989, 1991, 1992, 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. */ |
| |
| #ifndef TM_I386V_H |
| #define TM_I386V_H 1 |
| |
| /* First pick up the generic *86 target file. */ |
| |
| #include "i386/tm-i386.h" |
| |
| /* 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. Override here to 4. */ |
| |
| #undef START_INFERIOR_TRAPS_EXPECTED |
| #define START_INFERIOR_TRAPS_EXPECTED 4 |
| |
| /* Number of machine registers */ |
| |
| #undef NUM_REGS |
| #define NUM_REGS 16 |
| |
| /* Initializer for an array of names of registers. |
| There should be NUM_REGS strings in this initializer. */ |
| |
| /* the order of the first 8 registers must match the compiler's |
| * numbering scheme (which is the same as the 386 scheme) |
| * also, this table must match regmap in i386-pinsn.c. |
| */ |
| |
| #undef REGISTER_NAMES |
| #define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ |
| "esp", "ebp", "esi", "edi", \ |
| "eip", "ps", "cs", "ss", \ |
| "ds", "es", "fs", "gs", \ |
| } |
| |
| /* Total amount of space needed to store our copies of the machine's |
| register state, the array `registers'. */ |
| |
| #undef REGISTER_BYTES |
| #define REGISTER_BYTES (NUM_REGS * 4) |
| |
| /* Index within `registers' of the first byte of the space for |
| register N. */ |
| |
| #undef REGISTER_BYTE |
| #define REGISTER_BYTE(N) ((N)*4) |
| |
| /* Number of bytes of storage in the actual machine representation |
| for register N. */ |
| |
| #undef REGISTER_RAW_SIZE |
| #define REGISTER_RAW_SIZE(N) (4) |
| |
| /* Number of bytes of storage in the program's representation |
| for register N. */ |
| |
| #undef REGISTER_VIRTUAL_SIZE |
| #define REGISTER_VIRTUAL_SIZE(N) (4) |
| |
| /* Largest value REGISTER_RAW_SIZE can have. */ |
| |
| #undef MAX_REGISTER_RAW_SIZE |
| #define MAX_REGISTER_RAW_SIZE 4 |
| |
| /* Largest value REGISTER_VIRTUAL_SIZE can have. */ |
| |
| #undef MAX_REGISTER_VIRTUAL_SIZE |
| #define MAX_REGISTER_VIRTUAL_SIZE 4 |
| |
| /* 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. */ |
| |
| #undef REGISTER_VIRTUAL_TYPE |
| #define REGISTER_VIRTUAL_TYPE(N) \ |
| ((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM ? \ |
| lookup_pointer_type (builtin_type_void) : builtin_type_int) |
| |
| /* Store the address of the place in which to copy the structure the |
| subroutine will return. This is called from call_function. */ |
| |
| #undef STORE_STRUCT_RETURN |
| #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. */ |
| |
| #undef EXTRACT_RETURN_VALUE |
| #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
| memcpy ((VALBUF), (REGBUF), TYPE_LENGTH (TYPE)) |
| |
| /* Write into appropriate registers a function return value |
| of type TYPE, given in virtual format. */ |
| |
| #undef STORE_RETURN_VALUE |
| #define STORE_RETURN_VALUE(TYPE,VALBUF) \ |
| write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) |
| |
| |
| /* 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. */ |
| |
| #undef FRAME_CHAIN |
| #define FRAME_CHAIN(thisframe) \ |
| (!inside_entry_file ((thisframe)->pc) ? \ |
| read_memory_integer ((thisframe)->frame, 4) :\ |
| 0) |
| |
| /* 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. */ |
| |
| #undef FRAMELESS_FUNCTION_INVOCATION |
| #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
| (frameless_look_for_prologue (FI)) |
| |
| #undef FRAME_SAVED_PC |
| #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) |
| |
| /* Return number of args passed to a frame. |
| Can return -1, meaning no way to tell. */ |
| |
| #undef FRAME_NUM_ARGS |
| #define FRAME_NUM_ARGS(fi) (-1) |
| |
| #ifdef __STDC__ /* Forward decl's for prototypes */ |
| struct frame_info; |
| struct frame_saved_regs; |
| #endif |
| |
| extern int |
| i386_frame_num_args PARAMS ((struct frame_info *)); |
| |
| #endif /* ifndef TM_I386V_H */ |