__setjmp14.S revision 1.5.8.2
1 1.5.8.2 martin /* $NetBSD: __setjmp14.S,v 1.5.8.2 2008/04/28 20:22:56 martin Exp $ */ 2 1.5.8.2 martin 3 1.5.8.2 martin /*- 4 1.5.8.2 martin * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 1.5.8.2 martin * All rights reserved. 6 1.5.8.2 martin * 7 1.5.8.2 martin * This code is derived from software contributed to The NetBSD Foundation 8 1.5.8.2 martin * by Matthew Fredette. 9 1.5.8.2 martin * 10 1.5.8.2 martin * Redistribution and use in source and binary forms, with or without 11 1.5.8.2 martin * modification, are permitted provided that the following conditions 12 1.5.8.2 martin * are met: 13 1.5.8.2 martin * 1. Redistributions of source code must retain the above copyright 14 1.5.8.2 martin * notice, this list of conditions and the following disclaimer. 15 1.5.8.2 martin * 2. Redistributions in binary form must reproduce the above copyright 16 1.5.8.2 martin * notice, this list of conditions and the following disclaimer in the 17 1.5.8.2 martin * documentation and/or other materials provided with the distribution. 18 1.5.8.2 martin * 19 1.5.8.2 martin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.5.8.2 martin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.5.8.2 martin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.5.8.2 martin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.5.8.2 martin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.5.8.2 martin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.5.8.2 martin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.5.8.2 martin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.5.8.2 martin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.5.8.2 martin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.5.8.2 martin * POSSIBILITY OF SUCH DAMAGE. 30 1.5.8.2 martin */ 31 1.5.8.2 martin 32 1.5.8.2 martin #include <machine/asm.h> 33 1.5.8.2 martin /* XXX fredette - this is awful */ 34 1.5.8.2 martin #define _LOCORE 35 1.5.8.2 martin #include <machine/frame.h> 36 1.5.8.2 martin #undef _LOCORE 37 1.5.8.2 martin #include <machine/psl.h> 38 1.5.8.2 martin 39 1.5.8.2 martin #if defined(LIBC_SCCS) && !defined(lint) 40 1.5.8.2 martin RCSID("$NetBSD: __setjmp14.S,v 1.5.8.2 2008/04/28 20:22:56 martin Exp $") 41 1.5.8.2 martin #endif /* LIBC_SCCS and not lint */ 42 1.5.8.2 martin 43 1.5.8.2 martin /* 44 1.5.8.2 martin * C library -- setjmp, longjmp 45 1.5.8.2 martin * 46 1.5.8.2 martin * longjmp(a,v) 47 1.5.8.2 martin * will generate a "return(v)" from 48 1.5.8.2 martin * the last call to 49 1.5.8.2 martin * setjmp(a) 50 1.5.8.2 martin * by restoring registers from the stack, 51 1.5.8.2 martin * and a struct sigcontext, see <signal.h> 52 1.5.8.2 martin */ 53 1.5.8.2 martin 54 1.5.8.2 martin ENTRY(__setjmp14,0) 55 1.5.8.2 martin /* Finish our stack frame. */ 56 1.5.8.2 martin stw %rp, HPPA_FRAME_CRP(%sp) 57 1.5.8.2 martin stw %arg0, HPPA_FRAME_ARG(0)(%sp) 58 1.5.8.2 martin 59 1.5.8.2 martin /* A sigcontext is at the beginning of our jmp_buf. */ 60 1.5.8.2 martin stw %r0, 4(%arg0) ; unused word (old style signal mask) 61 1.5.8.2 martin stw %sp, 8(%arg0) ; sc.sc_sp = %sp 62 1.5.8.2 martin stw %r0, 16(%arg0) ; sc.sc_ap = NULL 63 1.5.8.2 martin mfsp %sr0, %r1 64 1.5.8.2 martin stw %r1, 20(%arg0) ; sc.sc_pcsqh = %sr0 65 1.5.8.2 martin stw %rp, 24(%arg0) ; sc.sc_pcoqh = %rp 66 1.5.8.2 martin stw %r1, 28(%arg0) ; sc.sc_pcsqh = %sr0 67 1.5.8.2 martin ldo 4(%rp), %r1 68 1.5.8.2 martin stw %r1, 32(%arg0) ; sc.sc_pcoqt = %rp + 4 69 1.5.8.2 martin #define PSW_MBS (PSW_C|PSW_Q|PSW_P|PSW_D|PSW_I) 70 1.5.8.2 martin ldil L%PSW_MBS, %r1 71 1.5.8.2 martin ldo R%PSW_MBS(%r1), %r1 72 1.5.8.2 martin stw %r1, 36(%arg0) ; set sc.sc_ps 73 1.5.8.2 martin 74 1.5.8.2 martin /* We store all callee-saved registers after the sigcontext. */ 75 1.5.8.2 martin ldo 56(%arg0), %r1 76 1.5.8.2 martin stwm %r3, 4(%r1) 77 1.5.8.2 martin stwm %r4, 4(%r1) 78 1.5.8.2 martin stwm %r5, 4(%r1) 79 1.5.8.2 martin stwm %r6, 4(%r1) 80 1.5.8.2 martin stwm %r7, 4(%r1) 81 1.5.8.2 martin stwm %r8, 4(%r1) 82 1.5.8.2 martin stwm %r9, 4(%r1) 83 1.5.8.2 martin stwm %r10, 4(%r1) 84 1.5.8.2 martin stwm %r11, 4(%r1) 85 1.5.8.2 martin stwm %r12, 4(%r1) 86 1.5.8.2 martin stwm %r13, 4(%r1) 87 1.5.8.2 martin stwm %r14, 4(%r1) 88 1.5.8.2 martin stwm %r15, 4(%r1) 89 1.5.8.2 martin stwm %r16, 4(%r1) 90 1.5.8.2 martin stwm %r17, 4(%r1) 91 1.5.8.2 martin stwm %r18, 4(%r1) 92 1.5.8.2 martin 93 1.5.8.2 martin /* 94 1.5.8.2 martin * Start the stack frame for the calls we will make. 95 1.5.8.2 martin * The minimum frame is 48 bytes, but the stack must 96 1.5.8.2 martin * always be 64-byte aligned; we use the top 4 bytes 97 1.5.8.2 martin * to save our caller's %r3, and the following 12 bytes 98 1.5.8.2 martin * as the stack_t for our sigaltstack call. 99 1.5.8.2 martin * XXX - this assumes that sizeof(stack_t) <= 12 100 1.5.8.2 martin */ 101 1.5.8.2 martin copy %r3, %r1 102 1.5.8.2 martin copy %sp, %r3 103 1.5.8.2 martin stwm %r1, HPPA_FRAME_SIZE(%sp) 104 1.5.8.2 martin 105 1.5.8.2 martin /* Get signal stack info. */ 106 1.5.8.2 martin ldo 4(%r3), %arg1 ; set up oss 107 1.5.8.2 martin bl __sigaltstack14, %rp 108 1.5.8.2 martin copy %r0, %arg0 ; set up ss 109 1.5.8.2 martin 110 1.5.8.2 martin /* Recover our jmp_buf and extract SS_ONSTACK */ 111 1.5.8.2 martin ldw HPPA_FRAME_ARG(0)(%r3), %arg0 112 1.5.8.2 martin ldw 12(%r3), %r1 ; get ss_flags 113 1.5.8.2 martin ldi 1, %r20 ; SS_ONSTACK 114 1.5.8.2 martin and %r1, %r20, %r1 115 1.5.8.2 martin stw %r1, 0(%arg0) ; sc.sc_onstack 116 1.5.8.2 martin 117 1.5.8.2 martin /* Get the signal mask. */ 118 1.5.8.2 martin ldo 40(%arg0), %arg2 ; oset = &sc.sc_mask 119 1.5.8.2 martin copy %r0, %arg1 ; set = NULL 120 1.5.8.2 martin bl __sigprocmask14, %rp 121 1.5.8.2 martin copy %r0, %arg0 ; action = 0 <ignored> 122 1.5.8.2 martin 123 1.5.8.2 martin /* Return 0. */ 124 1.5.8.2 martin ldo HPPA_FRAME_SIZE(%r3),%sp 125 1.5.8.2 martin ldwm -HPPA_FRAME_SIZE(%sp),%r3 126 1.5.8.2 martin ldw HPPA_FRAME_CRP(%sp), %rp 127 1.5.8.2 martin bv %r0(%rp) 128 1.5.8.2 martin copy %r0, %ret0 129 1.5.8.2 martin EXIT(__setjmp14) 130 1.5.8.2 martin 131 1.5.8.2 martin .end 132
Indexes created Thu Oct 23 22:10:10 GMT 2025