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86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
/* Target machine description for SGI Iris under Irix 5, for GDB.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 2000
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "mips/tm-irix3.h"
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/* FIXME: cagney/2000-04-04: Testing the _MIPS_SIM_NABI32 and
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_MIPS_SIM in a tm-*.h file is simply wrong! Those are
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host-dependant macros (provided by /usr/include) and stop any
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chance of the target being cross compiled */
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#if defined (_MIPS_SIM_NABI32) && _MIPS_SIM == _MIPS_SIM_NABI32
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/*
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* Irix 6 (n32 ABI) has 32-bit GP regs and 64-bit FP regs
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*/
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#undef REGISTER_BYTES
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#define REGISTER_BYTES (MIPS_NUMREGS * 8 + (NUM_REGS - MIPS_NUMREGS) * MIPS_REGSIZE)
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#undef REGISTER_BYTE
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#define REGISTER_BYTE(N) \
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(((N) < FP0_REGNUM) ? (N) * MIPS_REGSIZE : \
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((N) < FP0_REGNUM + 32) ? \
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FP0_REGNUM * MIPS_REGSIZE + \
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((N) - FP0_REGNUM) * sizeof(double) : \
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32 * sizeof(double) + ((N) - 32) * MIPS_REGSIZE)
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#undef REGISTER_VIRTUAL_TYPE
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#define REGISTER_VIRTUAL_TYPE(N) \
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(((N) >= FP0_REGNUM && (N) < FP0_REGNUM+32) ? builtin_type_double \
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: ((N) == 32 /*SR*/) ? builtin_type_uint32 \
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: ((N) >= 70 && (N) <= 89) ? builtin_type_uint32 \
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: builtin_type_int)
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#undef MIPS_LAST_ARG_REGNUM
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#define MIPS_LAST_ARG_REGNUM 11 /* N32 uses R4 through R11 for args */
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/* MIPS_STACK_ARGSIZE -- how many bytes does a pushed function arg take
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up on the stack? For the n32 ABI, eight bytes are reserved for each
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register. Like MIPS_SAVED_REGSIZE but different. */
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#define MIPS_DEFAULT_STACK_ARGSIZE 8
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/* N32 does not reserve home space for registers used to carry
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parameters. */
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#define MIPS_REGS_HAVE_HOME_P 0
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/* Force N32 ABI as the default. */
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#define MIPS_DEFAULT_ABI MIPS_ABI_N32
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#endif /* N32 */
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/* The signal handler trampoline is called _sigtramp. */
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#undef IN_SIGTRAMP
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#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigtramp", name))
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/* Irix 5 saves a full 64 bits for each register. We skip 2 * 4 to
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get to the saved PC (the register mask and status register are both
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32 bits) and then another 4 to get to the lower 32 bits. We skip
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the same 4 bytes, plus the 8 bytes for the PC to get to the
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registers, and add another 4 to get to the lower 32 bits. We skip
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8 bytes per register. */
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#undef SIGFRAME_PC_OFF
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#define SIGFRAME_PC_OFF (SIGFRAME_BASE + 2 * 4 + 4)
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#undef SIGFRAME_REGSAVE_OFF
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#define SIGFRAME_REGSAVE_OFF (SIGFRAME_BASE + 2 * 4 + 8 + 4)
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#undef SIGFRAME_FPREGSAVE_OFF
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#define SIGFRAME_FPREGSAVE_OFF (SIGFRAME_BASE + 2 * 4 + 8 + 32 * 8 + 4)
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#define SIGFRAME_REG_SIZE 8
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