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/* $NetBSD: frame.h,v 1.4 2001/12/04 00:05:05 darrenr Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)frame.h 8.1 (Berkeley) 6/11/93
*/
#if defined(_KERNEL_OPT)
#include "opt_sparc_arch.h"
#endif
/*
* Sparc stack frame format.
*
* Note that the contents of each stack frame may be held only in
* machine register windows. In order to get an accurate picture
* of the frame, you must first force the kernel to write any such
* windows to the stack.
*/
#ifndef _LOCORE
#ifndef SUN4U
struct frame {
int32_t fr_local[8]; /* space to save locals (%l0..%l7) */
int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
struct frame *fr_fp; /* space to save frame pointer (%i6) */
int32_t fr_pc; /* space to save return pc (%i7) */
/*
* SunOS reserves another 8 words here; this is pointless
* but we do it for compatibility.
*/
int32_t fr_xxx; /* `structure return pointer' (unused) */
int32_t fr_argd[6]; /* `arg dump area' (lunacy) */
int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */
};
#else
struct frame32 {
int32_t fr_local[8]; /* space to save locals (%l0..%l7) */
int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
u_int32_t fr_fp; /* space to save frame pointer (%i6) */
u_int32_t fr_pc; /* space to save return pc (%i7) */
/*
* SunOS reserves another 8 words here; this is pointless
* but we do it for compatibility.
*/
int32_t fr_xxx; /* `structure return pointer' (unused) */
int32_t fr_argd[6]; /* `arg dump area' (lunacy) */
int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */
};
#endif
#endif
/*
* CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if
* a function is to call C code. It should be just 64, but Sun defined
* their frame with space to hold arguments 0 through 5 (plus some junk),
* and varargs routines (such as kprintf) demand this, and gcc uses this
* area at times anyway.
*/
#define CCFSZ 96
/*
* Sparc v9 stack frame format.
*
* Note that the contents of each stack frame may be held only in
* machine register windows. In order to get an accurate picture
* of the frame, you must first force the kernel to write any such
* windows to the stack.
*
* V9 frames have an odd bias, so you can tall a v9 frame from
* a v8 frame by testing the stack pointer's lsb.
*/
#if !defined(_LOCORE) && !defined(_LIBC)
struct frame64 {
int64_t fr_local[8]; /* space to save locals (%l0..%l7) */
int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
u_int64_t fr_fp; /* space to save frame pointer (%i6) */
u_int64_t fr_pc; /* space to save return pc (%i7) */
/*
* SVR4 reserves a bunch of extra stuff.
*/
int64_t fr_argd[6]; /* `register save area' (lunacy) */
int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */
};
#define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS))
#endif
/*
* CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used
* by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs.
*/
#define CC64FSZ 176
/*
* v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily
* detect it by testing the register for an odd value. Why 2K-1 I don't know.
*/
#define BIAS (2048-1)
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