mcontext.h revision 1.2
1 1.2 thorpej /* $NetBSD: mcontext.h,v 1.2 2003/01/18 06:23:28 thorpej Exp $ */ 2 1.2 thorpej 3 1.2 thorpej /*- 4 1.2 thorpej * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 1.2 thorpej * All rights reserved. 6 1.2 thorpej * 7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation 8 1.2 thorpej * by Klaus Klein. 9 1.2 thorpej * 10 1.2 thorpej * Redistribution and use in source and binary forms, with or without 11 1.2 thorpej * modification, are permitted provided that the following conditions 12 1.2 thorpej * are met: 13 1.2 thorpej * 1. Redistributions of source code must retain the above copyright 14 1.2 thorpej * notice, this list of conditions and the following disclaimer. 15 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 thorpej * notice, this list of conditions and the following disclaimer in the 17 1.2 thorpej * documentation and/or other materials provided with the distribution. 18 1.2 thorpej * 3. All advertising materials mentioning features or use of this software 19 1.2 thorpej * must display the following acknowledgement: 20 1.2 thorpej * This product includes software developed by the NetBSD 21 1.2 thorpej * Foundation, Inc. and its contributors. 22 1.2 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2 thorpej * contributors may be used to endorse or promote products derived 24 1.2 thorpej * from this software without specific prior written permission. 25 1.2 thorpej * 26 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE. 37 1.2 thorpej */ 38 1.2 thorpej 39 1.2 thorpej #ifndef _POWERPC_MCONTEXT_H_ 40 1.2 thorpej #define _POWERPC_MCONTEXT_H_ 41 1.2 thorpej 42 1.2 thorpej /* 43 1.2 thorpej * Layout of mcontext_t based on the System V Application Binary Interface, 44 1.2 thorpej * Edition 4.1, PowerPC Processor ABI Supplement - September 1995, and 45 1.2 thorpej * extended for the AltiVec Register File. Note that due to the increased 46 1.2 thorpej * alignment requirements of the latter, the offset of mcontext_t within 47 1.2 thorpej * an ucontext_t is different from System V. 48 1.2 thorpej */ 49 1.2 thorpej 50 1.2 thorpej #define _NGREG 39 /* GR0-31, CR, LR, SRR0, SRR1, CTR, XER, MQ */ 51 1.2 thorpej 52 1.2 thorpej typedef int __greg_t; 53 1.2 thorpej typedef __greg_t __gregset_t[_NGREG]; 54 1.2 thorpej 55 1.2 thorpej struct __gregs { 56 1.2 thorpej __greg_t __r_r0; /* GR0-31 */ 57 1.2 thorpej __greg_t __r_r1; 58 1.2 thorpej __greg_t __r_r2; 59 1.2 thorpej __greg_t __r_r3; 60 1.2 thorpej __greg_t __r_r4; 61 1.2 thorpej __greg_t __r_r5; 62 1.2 thorpej __greg_t __r_r6; 63 1.2 thorpej __greg_t __r_r7; 64 1.2 thorpej __greg_t __r_r8; 65 1.2 thorpej __greg_t __r_r9; 66 1.2 thorpej __greg_t __r_r10; 67 1.2 thorpej __greg_t __r_r11; 68 1.2 thorpej __greg_t __r_r12; 69 1.2 thorpej __greg_t __r_r13; 70 1.2 thorpej __greg_t __r_r14; 71 1.2 thorpej __greg_t __r_r15; 72 1.2 thorpej __greg_t __r_r16; 73 1.2 thorpej __greg_t __r_r17; 74 1.2 thorpej __greg_t __r_r18; 75 1.2 thorpej __greg_t __r_r19; 76 1.2 thorpej __greg_t __r_r20; 77 1.2 thorpej __greg_t __r_r21; 78 1.2 thorpej __greg_t __r_r22; 79 1.2 thorpej __greg_t __r_r23; 80 1.2 thorpej __greg_t __r_r24; 81 1.2 thorpej __greg_t __r_r25; 82 1.2 thorpej __greg_t __r_r26; 83 1.2 thorpej __greg_t __r_r27; 84 1.2 thorpej __greg_t __r_r28; 85 1.2 thorpej __greg_t __r_r29; 86 1.2 thorpej __greg_t __r_r30; 87 1.2 thorpej __greg_t __r_r31; 88 1.2 thorpej __greg_t __r_cr; /* Condition Register */ 89 1.2 thorpej __greg_t __r_lr; /* Link Register */ 90 1.2 thorpej __greg_t __r_pc; /* PC (copy of SRR0) */ 91 1.2 thorpej __greg_t __r_msr; /* MSR (copy of SRR1) */ 92 1.2 thorpej __greg_t __r_ctr; /* Count Register */ 93 1.2 thorpej __greg_t __r_xer; /* Integer Exception Register */ 94 1.2 thorpej __greg_t __r_mq; /* MQ Register (POWER only) */ 95 1.2 thorpej }; 96 1.2 thorpej 97 1.2 thorpej typedef struct { 98 1.2 thorpej double __fpu_regs[32]; /* FP0-31 */ 99 1.2 thorpej unsigned int __fpu_fpscr; /* FP Status and Control Register */ 100 1.2 thorpej unsigned int __fpu_valid; /* Set together with _UC_FPU */ 101 1.2 thorpej } __fpregset_t; 102 1.2 thorpej 103 1.2 thorpej #define _NVR 32 /* Number of Vector registers */ 104 1.2 thorpej 105 1.2 thorpej typedef struct { 106 1.2 thorpej union __vr { 107 1.2 thorpej unsigned char __vr8[16]; 108 1.2 thorpej unsigned short __vr16[8]; 109 1.2 thorpej unsigned int __vr32[4]; 110 1.2 thorpej } __vrs[_NVR] __attribute__((__aligned__(16))); 111 1.2 thorpej unsigned int __vscr; /* VSCR */ 112 1.2 thorpej unsigned int __vrsave; /* VRSAVE */ 113 1.2 thorpej } __vrf_t; 114 1.2 thorpej 115 1.2 thorpej typedef struct { 116 1.2 thorpej __gregset_t __gregs; /* General Purpose Register set */ 117 1.2 thorpej __fpregset_t __fpregs; /* Floating Point Register set */ 118 1.2 thorpej __vrf_t __vrf; /* Vector Register File */ 119 1.2 thorpej } mcontext_t; 120 1.2 thorpej 121 1.2 thorpej /* Machine-dependent uc_flags */ 122 1.2 thorpej #define _UC_POWERPC_VEC 0x00010000 /* Vector Register File valid */ 123 1.2 thorpej 124 1.2 thorpej #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[1]) 125 1.2 thorpej 126 1.2 thorpej #endif /* !_POWERPC_MCONTEXT_H_ */ 127
Indexes created Tue Sep 23 01:09:51 GMT 2025