| 1 | /* $OpenBSD: frame.h,v 1.11 2024/04/08 20:07:53 miod 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 _MACHINE_FRAME_H_ |
| 45 | #define _MACHINE_FRAME_H_ |
| 46 | |
| 47 | /* |
| 48 | * CC64FSZ (C Compiler 64-bit Frame SiZe) is the size of a stack frame used |
| 49 | * by the compiler in 64-bit mode. It is (16)*8; space for 8 ins, 8 outs. |
| 50 | */ |
| 51 | #define CC64FSZ 176 |
| 52 | |
| 53 | /* |
| 54 | * v9 stacks all have a bias of 2047 added to the %sp and %fp, so you can easily |
| 55 | * detect it by testing the register for an odd value. Why 2K-1 I don't know. |
| 56 | */ |
| 57 | #define BIAS (2048-1) |
| 58 | |
| 59 | #if defined(_KERNEL) && !defined(_LOCORE) |
| 60 | |
| 61 | /* |
| 62 | * Sparc v9 stack frame format. |
| 63 | * |
| 64 | * Note that the contents of each stack frame may be held only in |
| 65 | * machine register windows. In order to get an accurate picture |
| 66 | * of the frame, you must first force the kernel to write any such |
| 67 | * windows to the stack. |
| 68 | * |
| 69 | * V9 frames have an odd bias, so you can tell a v9 frame from |
| 70 | * a v8 frame by testing the stack pointer's lsb. |
| 71 | */ |
| 72 | struct frame { |
| 73 | int64_t fr_local[8]; /* space to save locals (%l0..%l7) */ |
| 74 | int64_t fr_arg[6]; /* space to save arguments (%i0..%i5) */ |
| 75 | u_int64_t fr_fp; /* space to save frame pointer (%i6) */ |
| 76 | u_int64_t fr_pc; /* space to save return pc (%i7) */ |
| 77 | /* |
| 78 | * SVR4 reserves a bunch of extra stuff. |
| 79 | */ |
| 80 | int64_t fr_argd[6]; /* `register save area' (lunacy) */ |
| 81 | int64_t fr_argx[0]; /* arg extension (args 7..n; variable size) */ |
| 82 | }; |
| 83 | |
| 84 | #define v9next_frame(f) ((struct frame*)(f->fr_fp+BIAS)) |
| 85 | |
| 86 | /* |
| 87 | * The v9 trapframe. |
| 88 | */ |
| 89 | struct trapframe { |
| 90 | int64_t tf_tstate; /* tstate register */ |
| 91 | int64_t tf_pc; /* return pc */ |
| 92 | int64_t tf_npc; /* return npc */ |
| 93 | int tf_y; /* %y register -- 32-bits */ |
| 94 | short tf_tt; /* What type of trap this was */ |
| 95 | char tf_pil; /* What IRQ we're handling */ |
| 96 | char tf_oldpil; /* What our old SPL was */ |
| 97 | int64_t tf_global[8]; /* global registers in trap's caller */ |
| 98 | int64_t tf_out[8]; /* output registers in trap's caller */ |
| 99 | int64_t tf_local[8]; /* local registers in trap's caller */ |
| 100 | int64_t tf_in[8]; /* in registers in trap's caller (for debug) */ |
| 101 | }; |
| 102 | |
| 103 | #endif /* _KERNEL && !_LOCORE */ |
| 104 | |
| 105 | #endif /* _MACHINE_FRAME_H_ */ |