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/* Target machine description for MIPS running SVR4, for GDB.
Copyright 1994, 1995 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-bigmips.h"
#include "tm-sysv4.h"
/* When calling functions on a 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))
/* On entry to the signal handler trampoline, an ucontext is already
pushed on the stack. We can get at the saved registers via the
mcontext which is contained within the ucontext. */
#define SIGFRAME_BASE 0
#define SIGFRAME_REGSAVE_OFF (SIGFRAME_BASE + 40)
#define SIGFRAME_PC_OFF (SIGFRAME_BASE + 40 + 35 * 4)
#define SIGFRAME_FPREGSAVE_OFF (SIGFRAME_BASE + 40 + 36 * 4)
/* Use the alternate method of determining valid frame chains. */
#define FRAME_CHAIN_VALID(fp,fi) func_frame_chain_valid (fp, fi)
/* Convert a DWARF register number to a gdb REGNUM. */
#define DWARF_REG_TO_REGNUM(num) ((num) < 32 ? (num) : (num)+FP0_REGNUM-32)
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