/* 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 #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_unsigned_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_unsigned_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) /* Forward decl's for prototypes */ struct frame_info; struct frame_saved_regs; extern int i386_frame_num_args (struct frame_info *); #endif /* ifndef TM_I386V_H */