/* Definitions to make GDB run on an Alpha box under Linux. The definitions here are used when the _target_ system is running Linux. Copyright 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef TM_LINUXALPHA_H #define TM_LINUXALPHA_H #include "alpha/tm-alpha.h" /* Are we currently handling a signal ? */ extern long alpha_linux_sigtramp_offset (CORE_ADDR); #undef IN_SIGTRAMP #define IN_SIGTRAMP(pc, name) (alpha_linux_sigtramp_offset (pc) >= 0) /* Get start and end address of sigtramp handler. */ #define SIGTRAMP_START(pc) (pc - alpha_linux_sigtramp_offset (pc)) #define SIGTRAMP_END(pc) (SIGTRAMP_START(pc) + 3*4) /* 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 Linux and most implementations. */ #undef START_INFERIOR_TRAPS_EXPECTED #define START_INFERIOR_TRAPS_EXPECTED 2 /* Return TRUE if procedure descriptor PROC is a procedure descriptor that refers to a dynamically generated sigtramp function. */ #undef PROC_DESC_IS_DYN_SIGTRAMP #define PROC_SIGTRAMP_MAGIC 0x0e0f0f0f #define PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \ == PROC_SIGTRAMP_MAGIC) #undef SET_PROC_DESC_IS_DYN_SIGTRAMP #define SET_PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \ = PROC_SIGTRAMP_MAGIC) /* If PC is inside a dynamically generated sigtramp function, return how many bytes the program counter is beyond the start of that function. Otherwise, return a negative value. */ #undef DYNAMIC_SIGTRAMP_OFFSET #define DYNAMIC_SIGTRAMP_OFFSET(pc) (alpha_linux_sigtramp_offset (pc)) /* Translate a signal handler frame into the address of the sigcontext structure. */ #undef SIGCONTEXT_ADDR #define SIGCONTEXT_ADDR(frame) ((frame)->frame - 0x298) /* If FRAME refers to a sigtramp frame, return the address of the next frame. Under Linux, sigtramp handlers have dynamically generated procedure descriptors that make this hack unnecessary. */ #undef FRAME_PAST_SIGTRAMP_FRAME #define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) (0) #include "tm-linux.h" #endif /* TM_LINUXALPHA_H */