Annotation of sys/arch/sparc64/include/frame.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: frame.h,v 1.5 2006/06/21 20:52:18 jason Exp $ */
! 2: /* $NetBSD: frame.h,v 1.9 2001/03/04 09:28:35 mrg Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1992, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This software was developed by the Computer Systems Engineering group
! 9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 10: * contributed to Berkeley.
! 11: *
! 12: * All advertising materials mentioning features or use of this software
! 13: * must display the following acknowledgement:
! 14: * This product includes software developed by the University of
! 15: * California, Lawrence Berkeley Laboratory.
! 16: *
! 17: * Redistribution and use in source and binary forms, with or without
! 18: * modification, are permitted provided that the following conditions
! 19: * are met:
! 20: * 1. Redistributions of source code must retain the above copyright
! 21: * notice, this list of conditions and the following disclaimer.
! 22: * 2. Redistributions in binary form must reproduce the above copyright
! 23: * notice, this list of conditions and the following disclaimer in the
! 24: * documentation and/or other materials provided with the distribution.
! 25: * 3. Neither the name of the University nor the names of its contributors
! 26: * may be used to endorse or promote products derived from this software
! 27: * without specific prior written permission.
! 28: *
! 29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 39: * SUCH DAMAGE.
! 40: *
! 41: * @(#)frame.h 8.1 (Berkeley) 6/11/93
! 42: */
! 43:
! 44: #ifndef _SPARC64_FRAME_H_
! 45: #define _SPARC64_FRAME_H_
! 46:
! 47: /*
! 48: * Sparc stack frame format.
! 49: *
! 50: * Note that the contents of each stack frame may be held only in
! 51: * machine register windows. In order to get an accurate picture
! 52: * of the frame, you must first force the kernel to write any such
! 53: * windows to the stack.
! 54: */
! 55: #ifndef _LOCORE
! 56: struct frame32 {
! 57: int32_t fr_local[8]; /* space to save locals (%l0..%l7) */
! 58: int32_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
! 59: u_int32_t fr_fp; /* space to save frame pointer (%i6) */
! 60: u_int32_t fr_pc; /* space to save return pc (%i7) */
! 61: /*
! 62: * SunOS reserves another 8 words here; this is pointless
! 63: * but we do it for compatibility.
! 64: */
! 65: int32_t fr_xxx; /* `structure return pointer' (unused) */
! 66: int32_t fr_argd[6]; /* `arg dump area' (lunacy) */
! 67: int32_t fr_argx[1]; /* arg extension (args 7..n; variable size) */
! 68: };
! 69: #endif
! 70:
! 71: /*
! 72: * CCFSZ (C Compiler Frame SiZe) is the size of a stack frame required if
! 73: * a function is to call C code. It should be just 64, but Sun defined
! 74: * their frame with space to hold arguments 0 through 5 (plus some junk),
! 75: * and varargs routines (such as kprintf) demand this, and gcc uses this
! 76: * area at times anyway.
! 77: */
! 78: #define CCFSZ 96
! 79:
! 80: /*
! 81: * Sparc v9 stack frame format.
! 82: *
! 83: * Note that the contents of each stack frame may be held only in
! 84: * machine register windows. In order to get an accurate picture
! 85: * of the frame, you must first force the kernel to write any such
! 86: * windows to the stack.
! 87: *
! 88: * V9 frames have an odd bias, so you can tall a v9 frame from
! 89: * a v8 frame by testing the stack pointer's lsb.
! 90: */
! 91: #if !defined(_LOCORE) && !defined(_LIBC)
! 92: struct frame64 {
! 93: int64_t fr_local[8]; /* space to save locals (%l0..%l7) */
! 94: int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */
! 95: u_int64_t fr_fp; /* space to save frame pointer (%i6) */
! 96: u_int64_t fr_pc; /* space to save return pc (%i7) */
! 97: /*
! 98: * SVR4 reserves a bunch of extra stuff.
! 99: */
! 100: int64_t fr_argd[6]; /* `register save area' (lunacy) */
! 101: int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */
! 102: };
! 103:
! 104: #define v9next_frame(f) ((struct frame64*)(f->fr_fp+BIAS))
! 105: #endif
! 106:
! 107: /*
! 108: * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used
! 109: * by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs.
! 110: */
! 111: #define CC64FSZ 176
! 112:
! 113: /*
! 114: * v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily
! 115: * detect it by testing the register for an odd value. Why 2K-1 I don't know.
! 116: */
! 117: #define BIAS (2048-1)
! 118:
! 119: #endif /* _SPARC64_FRAME_H_ */
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