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- /* Target machine description for SGI Iris under Irix 5, for GDB.
- Copyright 1990, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "mips/tm-irix3.h"
-
- /* When calling functions on Irix 5 (or any MIPS SVR4 ABI compliant
- platform) $25 must hold the function address. Dest_Reg is a macro
- used in CALL_DUMMY in tm-mips.h. */
- #undef Dest_Reg
- #define Dest_Reg 25
-
- /* The signal handler trampoline is called _sigtramp. */
- #undef IN_SIGTRAMP
- #define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigtramp", name))
-
- /* Irix 5 saves a full 64 bits for each register. We skip 2 * 4 to
- get to the saved PC (the register mask and status register are both
- 32 bits) and then another 4 to get to the lower 32 bits. We skip
- the same 4 bytes, plus the 8 bytes for the PC to get to the
- registers, and add another 4 to get to the lower 32 bits. We skip
- 8 bytes per register. */
- #undef SIGFRAME_PC_OFF
- #define SIGFRAME_PC_OFF (SIGFRAME_BASE + 2 * 4 + 4)
- #undef SIGFRAME_REGSAVE_OFF
- #define SIGFRAME_REGSAVE_OFF (SIGFRAME_BASE + 2 * 4 + 8 + 4)
- #define SIGFRAME_REG_SIZE 8
-