1 /* 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * %sccs.include.redist.c% 10 * 11 * @(#)frame.h 7.1 (Berkeley) 07/13/92 12 * 13 * from: $Header: frame.h,v 1.4 92/06/17 06:10:17 torek Exp $ 14 */ 15 16 /* 17 * Sparc stack frame format. 18 * 19 * Note that the contents of each stack frame may be held only in 20 * machine register windows. In order to get an accurate picture 21 * of the frame, you must first force the kernel to write any such 22 * windows to the stack. 23 */ 24 struct frame { 25 int fr_local[8]; /* space to save locals (%l0..%l7) */ 26 int fr_arg[6]; /* space to save arguments (%i0..%i5) */ 27 struct frame *fr_fp; /* space to save frame pointer (%i6) */ 28 int fr_pc; /* space to save return pc (%i7) */ 29 /* 30 * SunOS reserves another 8 words here; this is pointless 31 * but we do it for compatibility. 32 */ 33 int fr_xxx; /* `structure return pointer' (unused) */ 34 int fr_argd[6]; /* `arg dump area' (lunacy) */ 35 int fr_argx[1]; /* arg extension (args 7..n; variable size) */ 36 }; 37