| /* 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, 1998, 1999, 2000 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 */ |