1 /* $NetBSD: frame.h,v 1.11 2025/04/25 00:59:27 riastradh Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #ifndef _ALPHA_FRAME_H_ 31 #define _ALPHA_FRAME_H_ 32 33 #include <machine/alpha_cpu.h> 34 #include <sys/signal.h> 35 36 /* 37 * Software trap, exception, and syscall frame. 38 * 39 * Includes "hardware" (PALcode) frame. 40 * 41 * PALcode puts ALPHA_HWFRAME_* fields on stack. We have to add 42 * all of the general-purpose registers except for zero, for sp 43 * (which is automatically saved in the PCB's USP field for entries 44 * from user mode, and which is implicitly saved and restored by the 45 * calling conventions for entries from kernel mode), and (on traps 46 * and exceptions) for a0, a1, and a2 (which are saved by PALcode). 47 */ 48 49 /* Quadword offsets of the registers to be saved. */ 50 #define FRAME_V0 0 51 #define FRAME_T0 1 52 #define FRAME_T1 2 53 #define FRAME_T2 3 54 #define FRAME_T3 4 55 #define FRAME_T4 5 56 #define FRAME_T5 6 57 #define FRAME_T6 7 58 #define FRAME_T7 8 59 #define FRAME_S0 9 60 #define FRAME_S1 10 61 #define FRAME_S2 11 62 #define FRAME_S3 12 63 #define FRAME_S4 13 64 #define FRAME_S5 14 65 #define FRAME_S6 15 66 #define FRAME_A3 16 67 #define FRAME_A4 17 68 #define FRAME_A5 18 69 #define FRAME_T8 19 70 #define FRAME_T9 20 71 #define FRAME_T10 21 72 #define FRAME_T11 22 73 #define FRAME_RA 23 74 #define FRAME_T12 24 75 #define FRAME_AT 25 76 #define FRAME_SP 26 77 78 #define FRAME_SW_SIZE (FRAME_SP + 1) 79 #define FRAME_HW_OFFSET FRAME_SW_SIZE 80 81 #define FRAME_PS (FRAME_HW_OFFSET + ALPHA_HWFRAME_PS) 82 #define FRAME_PC (FRAME_HW_OFFSET + ALPHA_HWFRAME_PC) 83 #define FRAME_GP (FRAME_HW_OFFSET + ALPHA_HWFRAME_GP) 84 #define FRAME_A0 (FRAME_HW_OFFSET + ALPHA_HWFRAME_A0) 85 #define FRAME_A1 (FRAME_HW_OFFSET + ALPHA_HWFRAME_A1) 86 #define FRAME_A2 (FRAME_HW_OFFSET + ALPHA_HWFRAME_A2) 87 88 #define FRAME_HW_SIZE ALPHA_HWFRAME_SIZE 89 #define FRAME_SIZE (FRAME_HW_OFFSET + FRAME_HW_SIZE) 90 91 struct trapframe { 92 unsigned long tf_regs[FRAME_SIZE]; /* See above */ 93 }; 94 95 #if defined(COMPAT_16) && defined(_KERNEL) 96 struct sigframe_sigcontext { 97 /* ra address of trampoline */ 98 /* a0 signum for handler */ 99 /* a1 code for handler */ 100 /* a2 struct sigcontext for handler */ 101 struct sigcontext sf_sc; /* actual saved context */ 102 }; 103 #endif 104 105 struct sigframe_siginfo { 106 /* ra address of trampoline */ 107 /* a0 signal number arg for handler */ 108 /* a1 siginfo_t * arg for handler */ 109 /* a2 ucontext_t * arg for handler */ 110 siginfo_t sf_si; /* actual saved siginfo */ 111 ucontext_t sf_uc; /* actual saved ucontext */ 112 }; 113 114 #ifdef _KERNEL 115 116 #include <sys/stddef.h> 117 void *getframe(const struct lwp *, int, int *, size_t, size_t); 118 void buildcontext(struct lwp *, const void *, const void *, const void *); 119 void sendsig_siginfo(const ksiginfo_t *, const sigset_t *); 120 #if defined(COMPAT_16) 121 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *); 122 #endif 123 124 #endif 125 126 #endif /* _ALPHA_FRAME_H_ */ 127