1 1.10 skrll /* $NetBSD: __setjmp14.S,v 1.10 2024/04/20 14:09:40 skrll Exp $ */ 2 1.1 fredette 3 1.1 fredette /*- 4 1.1 fredette * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 1.1 fredette * All rights reserved. 6 1.1 fredette * 7 1.1 fredette * This code is derived from software contributed to The NetBSD Foundation 8 1.1 fredette * by Matthew Fredette. 9 1.1 fredette * 10 1.1 fredette * Redistribution and use in source and binary forms, with or without 11 1.1 fredette * modification, are permitted provided that the following conditions 12 1.1 fredette * are met: 13 1.1 fredette * 1. Redistributions of source code must retain the above copyright 14 1.1 fredette * notice, this list of conditions and the following disclaimer. 15 1.1 fredette * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 fredette * notice, this list of conditions and the following disclaimer in the 17 1.1 fredette * documentation and/or other materials provided with the distribution. 18 1.1 fredette * 19 1.1 fredette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1 fredette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1 fredette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1 fredette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1 fredette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1 fredette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1 fredette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1 fredette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1 fredette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1 fredette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1 fredette * POSSIBILITY OF SUCH DAMAGE. 30 1.1 fredette */ 31 1.1 fredette 32 1.10 skrll #include "assym.h" 33 1.10 skrll 34 1.1 fredette #include <machine/asm.h> 35 1.1 fredette #include <machine/frame.h> 36 1.1 fredette #include <machine/psl.h> 37 1.1 fredette 38 1.1 fredette #if defined(LIBC_SCCS) && !defined(lint) 39 1.10 skrll RCSID("$NetBSD: __setjmp14.S,v 1.10 2024/04/20 14:09:40 skrll Exp $") 40 1.1 fredette #endif /* LIBC_SCCS and not lint */ 41 1.1 fredette 42 1.1 fredette /* 43 1.1 fredette * C library -- setjmp, longjmp 44 1.1 fredette * 45 1.1 fredette * longjmp(a,v) 46 1.1 fredette * will generate a "return(v)" from 47 1.1 fredette * the last call to 48 1.1 fredette * setjmp(a) 49 1.1 fredette * by restoring registers from the stack, 50 1.1 fredette * and a struct sigcontext, see <signal.h> 51 1.1 fredette */ 52 1.1 fredette 53 1.1 fredette ENTRY(__setjmp14,0) 54 1.1 fredette /* Finish our stack frame. */ 55 1.1 fredette stw %rp, HPPA_FRAME_CRP(%sp) 56 1.1 fredette stw %arg0, HPPA_FRAME_ARG(0)(%sp) 57 1.1 fredette 58 1.1 fredette /* A sigcontext is at the beginning of our jmp_buf. */ 59 1.10 skrll stw %r0, _SC_MASK13(%arg0) ; unused word (old style signal mask) 60 1.10 skrll stw %sp, _SC_REGS_SP(%arg0) ; sc.sc_sp = %sp 61 1.10 skrll stw %r0, _SC_REGS_AP(%arg0) ; sc.sc_ap = NULL 62 1.1 fredette mfsp %sr0, %r1 63 1.10 skrll stw %r1, _SC_REGS_PCSQH(%arg0) ; sc.sc_pcsqh = %sr0 64 1.10 skrll stw %rp, _SC_REGS_PCOQH(%arg0) ; sc.sc_pcoqh = %rp 65 1.10 skrll stw %r1, _SC_REGS_PCSQT(%arg0) ; sc.sc_pcsqt = %sr0 66 1.1 fredette ldo 4(%rp), %r1 67 1.10 skrll stw %r1, _SC_REGS_PCOQT(%arg0) ; sc.sc_pcoqt = %rp + 4 68 1.1 fredette ldil L%PSW_MBS, %r1 69 1.1 fredette ldo R%PSW_MBS(%r1), %r1 70 1.10 skrll stw %r1, _SC_REGS_PS(%arg0) ; set sc.sc_ps 71 1.1 fredette 72 1.1 fredette /* We store all callee-saved registers after the sigcontext. */ 73 1.10 skrll ldo SIZEOF_SIGCONTEXT(%arg0), %r1 74 1.1 fredette stwm %r3, 4(%r1) 75 1.1 fredette stwm %r4, 4(%r1) 76 1.1 fredette stwm %r5, 4(%r1) 77 1.1 fredette stwm %r6, 4(%r1) 78 1.1 fredette stwm %r7, 4(%r1) 79 1.1 fredette stwm %r8, 4(%r1) 80 1.1 fredette stwm %r9, 4(%r1) 81 1.1 fredette stwm %r10, 4(%r1) 82 1.1 fredette stwm %r11, 4(%r1) 83 1.1 fredette stwm %r12, 4(%r1) 84 1.1 fredette stwm %r13, 4(%r1) 85 1.1 fredette stwm %r14, 4(%r1) 86 1.1 fredette stwm %r15, 4(%r1) 87 1.1 fredette stwm %r16, 4(%r1) 88 1.1 fredette stwm %r17, 4(%r1) 89 1.1 fredette stwm %r18, 4(%r1) 90 1.1 fredette 91 1.1 fredette /* 92 1.1 fredette * Start the stack frame for the calls we will make. 93 1.1 fredette * The minimum frame is 48 bytes, but the stack must 94 1.1 fredette * always be 64-byte aligned; we use the top 4 bytes 95 1.1 fredette * to save our caller's %r3, and the following 12 bytes 96 1.1 fredette * as the stack_t for our sigaltstack call. 97 1.1 fredette * XXX - this assumes that sizeof(stack_t) <= 12 98 1.1 fredette */ 99 1.1 fredette copy %r3, %r1 100 1.1 fredette copy %sp, %r3 101 1.1 fredette stwm %r1, HPPA_FRAME_SIZE(%sp) 102 1.1 fredette 103 1.1 fredette /* Get signal stack info. */ 104 1.1 fredette ldo 4(%r3), %arg1 ; set up oss 105 1.1 fredette bl __sigaltstack14, %rp 106 1.9 skrll copy %r0, %arg0 ; set up ss 107 1.1 fredette 108 1.1 fredette /* Recover our jmp_buf and extract SS_ONSTACK */ 109 1.1 fredette ldw HPPA_FRAME_ARG(0)(%r3), %arg0 110 1.1 fredette ldw 12(%r3), %r1 ; get ss_flags 111 1.2 fredette ldi 1, %r20 ; SS_ONSTACK 112 1.2 fredette and %r1, %r20, %r1 113 1.1 fredette stw %r1, 0(%arg0) ; sc.sc_onstack 114 1.7 skrll 115 1.1 fredette /* Get the signal mask. */ 116 1.10 skrll ldo _SC_MASK(%arg0), %arg2 ; oset = &sc.sc_mask 117 1.1 fredette copy %r0, %arg1 ; set = NULL 118 1.1 fredette bl __sigprocmask14, %rp 119 1.9 skrll copy %r0, %arg0 ; action = 0 <ignored> 120 1.1 fredette 121 1.1 fredette /* Return 0. */ 122 1.1 fredette ldo HPPA_FRAME_SIZE(%r3),%sp 123 1.1 fredette ldwm -HPPA_FRAME_SIZE(%sp),%r3 124 1.1 fredette ldw HPPA_FRAME_CRP(%sp), %rp 125 1.1 fredette bv %r0(%rp) 126 1.9 skrll copy %r0, %ret0 127 1.1 fredette EXIT(__setjmp14) 128 1.1 fredette 129 1.1 fredette .end 130
Indexes created Sat Oct 18 23:09:54 GMT 2025