/* Definitions to target GDB to GNU/Linux on m680x0. Copyright 1996, 1998, 1999, 2000, 2002 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. */ #include "regcache.h" #include "m68k-tdep.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. */ #define START_INFERIOR_TRAPS_EXPECTED 2 /* The following definitions are appropriate when using the ELF format, where floating point values are returned in fp0, pointer values in a0 and other values in d0. */ /* 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 DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ { \ if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \ { \ REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE, \ ((char *) (REGBUF) \ + REGISTER_BYTE (FP0_REGNUM)), \ VALBUF); \ } \ else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \ memcpy (VALBUF, (char *) (REGBUF) + REGISTER_BYTE (M68K_A0_REGNUM), \ TYPE_LENGTH (TYPE)); \ else \ memcpy (VALBUF, \ ((char *) (REGBUF) \ + (TYPE_LENGTH (TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH (TYPE))), \ TYPE_LENGTH (TYPE)); \ } /* Write into appropriate registers a function return value of type TYPE, given in virtual format. */ #define DEPRECATED_STORE_RETURN_VALUE(TYPE,VALBUF) \ { \ if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \ { \ char raw_buffer[REGISTER_RAW_SIZE (FP0_REGNUM)]; \ REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buffer); \ deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM), \ raw_buffer, TYPE_LENGTH (TYPE)); \ } \ else \ { \ if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \ deprecated_write_register_bytes (REGISTER_BYTE (M68K_A0_REGNUM), VALBUF, \ TYPE_LENGTH (TYPE)); \ deprecated_write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)); \ } \ } #include "config/tm-linux.h" #include "m68k/tm-m68k.h" /* 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). */ #undef DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ (*(CORE_ADDR *)((char *) (REGBUF) + REGISTER_BYTE (M68K_A0_REGNUM))) /* Offsets (in target ints) into jmp_buf. */ #define JB_ELEMENT_SIZE 4 #define JB_PC 7 /* Figure out where the longjmp will land. Slurp the args out of the stack. We expect the first arg to be a pointer to the jmp_buf structure from which we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. This routine returns true on success */ #define GET_LONGJMP_TARGET(ADDR) m68k_get_longjmp_target(ADDR) #undef FRAME_SAVED_PC #define FRAME_SAVED_PC(frame) m68k_linux_frame_saved_pc (frame) extern CORE_ADDR m68k_linux_frame_saved_pc (struct frame_info *); #define IN_SIGTRAMP(pc,name) m68k_linux_in_sigtramp (pc) extern int m68k_linux_in_sigtramp (CORE_ADDR pc);