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/* Target machine description for SGI Iris under Irix 5, for GDB.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 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. */
#include "mips/tm-mips.h"
/* Redefine register numbers for SGI. */
#undef MIPS_REGISTER_NAMES
#undef FP0_REGNUM
#undef PC_REGNUM
#undef HI_REGNUM
#undef LO_REGNUM
#undef CAUSE_REGNUM
#undef BADVADDR_REGNUM
#undef FCRCS_REGNUM
#undef FCRIR_REGNUM
/* Initializer for an array of names for registers 32 and above.
There should be NUM_REGS-32 strings in this initializer. */
#define MIPS_REGISTER_NAMES \
{ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",\
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",\
"pc", "cause", "bad", "hi", "lo", "fsr", "fir" \
}
/* Register numbers of various important registers.
Note that some of these values are "real" register numbers,
and correspond to the general registers of the machine,
and some are "phony" register numbers which are too large
to be actual register numbers as far as the user is concerned
but do serve to get the desired values when passed to read_register. */
#define FP0_REGNUM 32 /* Floating point register 0 (single float) */
#define PC_REGNUM 64 /* Contains program counter */
#define CAUSE_REGNUM 65 /* describes last exception */
#define BADVADDR_REGNUM 66 /* bad vaddr for addressing exception */
#define HI_REGNUM 67 /* Multiple/divide temp */
#define LO_REGNUM 68 /* ... */
#define FCRCS_REGNUM 69 /* FP control/status */
#define FCRIR_REGNUM 70 /* FP implementation/revision */
/* Offsets for register values in _sigtramp frame.
sigcontext is immediately above the _sigtramp frame on Irix. */
#define SIGFRAME_BASE 0x0
#define SIGFRAME_PC_OFF (SIGFRAME_BASE + 2 * 4)
#define SIGFRAME_REGSAVE_OFF (SIGFRAME_BASE + 3 * 4)
#define SIGFRAME_FPREGSAVE_OFF (SIGFRAME_BASE + 3 * 4 + 32 * 4 + 4)
/* FIXME: cagney/2000-04-04: Testing the _MIPS_SIM_NABI32 and
_MIPS_SIM in a tm-*.h file is simply wrong! Those are
host-dependant macros (provided by /usr/include) and stop any
chance of the target being cross compiled */
#if defined (_MIPS_SIM_NABI32) && _MIPS_SIM == _MIPS_SIM_NABI32
/*
* Irix 6 (n32 ABI) has 32-bit GP regs and 64-bit FP regs
*/
#undef MIPS_REGISTER_BYTE
#define MIPS_REGISTER_BYTE(N) \
(((N) < FP0_REGNUM) ? (N) * MIPS_REGSIZE : \
((N) < FP0_REGNUM + 32) ? \
FP0_REGNUM * MIPS_REGSIZE + \
((N) - FP0_REGNUM) * sizeof(double) : \
32 * sizeof(double) + ((N) - 32) * MIPS_REGSIZE)
#undef MIPS_REGISTER_TYPE
#define MIPS_REGISTER_TYPE(N) \
(((N) >= FP0_REGNUM && (N) < FP0_REGNUM+32) ? builtin_type_double \
: ((N) == 32 /*SR*/) ? builtin_type_uint32 \
: ((N) >= 70 && (N) <= 89) ? builtin_type_uint32 \
: builtin_type_int)
#endif /* N32 */
/* 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)
#undef SIGFRAME_FPREGSAVE_OFF
#define SIGFRAME_FPREGSAVE_OFF (SIGFRAME_BASE + 2 * 4 + 8 + 32 * 8 + 4)
#define SIGFRAME_REG_SIZE 8
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