__setjmp14.S revision 1.5.46.1
1 1.5.46.1 pgoyette /* $NetBSD: __setjmp14.S,v 1.5.46.1 2016/07/26 03:24:15 pgoyette 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 1.1 fredette #include <machine/asm.h> 33 1.1 fredette /* XXX fredette - this is awful */ 34 1.1 fredette #define _LOCORE 35 1.1 fredette #include <machine/frame.h> 36 1.1 fredette #undef _LOCORE 37 1.1 fredette #include <machine/psl.h> 38 1.1 fredette 39 1.1 fredette #if defined(LIBC_SCCS) && !defined(lint) 40 1.5.46.1 pgoyette RCSID("$NetBSD: __setjmp14.S,v 1.5.46.1 2016/07/26 03:24:15 pgoyette Exp $") 41 1.1 fredette #endif /* LIBC_SCCS and not lint */ 42 1.1 fredette 43 1.1 fredette /* 44 1.1 fredette * C library -- setjmp, longjmp 45 1.1 fredette * 46 1.1 fredette * longjmp(a,v) 47 1.1 fredette * will generate a "return(v)" from 48 1.1 fredette * the last call to 49 1.1 fredette * setjmp(a) 50 1.1 fredette * by restoring registers from the stack, 51 1.1 fredette * and a struct sigcontext, see <signal.h> 52 1.1 fredette */ 53 1.1 fredette 54 1.1 fredette ENTRY(__setjmp14,0) 55 1.1 fredette /* Finish our stack frame. */ 56 1.1 fredette stw %rp, HPPA_FRAME_CRP(%sp) 57 1.1 fredette stw %arg0, HPPA_FRAME_ARG(0)(%sp) 58 1.1 fredette 59 1.1 fredette /* A sigcontext is at the beginning of our jmp_buf. */ 60 1.1 fredette stw %r0, 4(%arg0) ; unused word (old style signal mask) 61 1.1 fredette stw %sp, 8(%arg0) ; sc.sc_sp = %sp 62 1.1 fredette stw %r0, 16(%arg0) ; sc.sc_ap = NULL 63 1.1 fredette mfsp %sr0, %r1 64 1.1 fredette stw %r1, 20(%arg0) ; sc.sc_pcsqh = %sr0 65 1.1 fredette stw %rp, 24(%arg0) ; sc.sc_pcoqh = %rp 66 1.1 fredette stw %r1, 28(%arg0) ; sc.sc_pcsqh = %sr0 67 1.1 fredette ldo 4(%rp), %r1 68 1.1 fredette stw %r1, 32(%arg0) ; sc.sc_pcoqt = %rp + 4 69 1.1 fredette ldil L%PSW_MBS, %r1 70 1.1 fredette ldo R%PSW_MBS(%r1), %r1 71 1.1 fredette stw %r1, 36(%arg0) ; set sc.sc_ps 72 1.1 fredette 73 1.1 fredette /* We store all callee-saved registers after the sigcontext. */ 74 1.1 fredette ldo 56(%arg0), %r1 75 1.1 fredette stwm %r3, 4(%r1) 76 1.1 fredette stwm %r4, 4(%r1) 77 1.1 fredette stwm %r5, 4(%r1) 78 1.1 fredette stwm %r6, 4(%r1) 79 1.1 fredette stwm %r7, 4(%r1) 80 1.1 fredette stwm %r8, 4(%r1) 81 1.1 fredette stwm %r9, 4(%r1) 82 1.1 fredette stwm %r10, 4(%r1) 83 1.1 fredette stwm %r11, 4(%r1) 84 1.1 fredette stwm %r12, 4(%r1) 85 1.1 fredette stwm %r13, 4(%r1) 86 1.1 fredette stwm %r14, 4(%r1) 87 1.1 fredette stwm %r15, 4(%r1) 88 1.1 fredette stwm %r16, 4(%r1) 89 1.1 fredette stwm %r17, 4(%r1) 90 1.1 fredette stwm %r18, 4(%r1) 91 1.1 fredette 92 1.1 fredette /* 93 1.1 fredette * Start the stack frame for the calls we will make. 94 1.1 fredette * The minimum frame is 48 bytes, but the stack must 95 1.1 fredette * always be 64-byte aligned; we use the top 4 bytes 96 1.1 fredette * to save our caller's %r3, and the following 12 bytes 97 1.1 fredette * as the stack_t for our sigaltstack call. 98 1.1 fredette * XXX - this assumes that sizeof(stack_t) <= 12 99 1.1 fredette */ 100 1.1 fredette copy %r3, %r1 101 1.1 fredette copy %sp, %r3 102 1.1 fredette stwm %r1, HPPA_FRAME_SIZE(%sp) 103 1.1 fredette 104 1.1 fredette /* Get signal stack info. */ 105 1.1 fredette ldo 4(%r3), %arg1 ; set up oss 106 1.1 fredette bl __sigaltstack14, %rp 107 1.1 fredette copy %r0, %arg0 ; set up ss 108 1.1 fredette 109 1.1 fredette /* Recover our jmp_buf and extract SS_ONSTACK */ 110 1.1 fredette ldw HPPA_FRAME_ARG(0)(%r3), %arg0 111 1.1 fredette ldw 12(%r3), %r1 ; get ss_flags 112 1.2 fredette ldi 1, %r20 ; SS_ONSTACK 113 1.2 fredette and %r1, %r20, %r1 114 1.1 fredette stw %r1, 0(%arg0) ; sc.sc_onstack 115 1.1 fredette 116 1.1 fredette /* Get the signal mask. */ 117 1.1 fredette ldo 40(%arg0), %arg2 ; oset = &sc.sc_mask 118 1.1 fredette copy %r0, %arg1 ; set = NULL 119 1.1 fredette bl __sigprocmask14, %rp 120 1.1 fredette copy %r0, %arg0 ; action = 0 <ignored> 121 1.1 fredette 122 1.1 fredette /* Return 0. */ 123 1.1 fredette ldo HPPA_FRAME_SIZE(%r3),%sp 124 1.1 fredette ldwm -HPPA_FRAME_SIZE(%sp),%r3 125 1.1 fredette ldw HPPA_FRAME_CRP(%sp), %rp 126 1.1 fredette bv %r0(%rp) 127 1.1 fredette copy %r0, %ret0 128 1.1 fredette EXIT(__setjmp14) 129 1.1 fredette 130 1.1 fredette .end 131
Indexes created Thu Oct 23 22:10:10 GMT 2025