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Annotation of sys/arch/powerpc/powerpc/setjmp.S, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: setjmp.S,v 1.8 2003/10/15 02:41:50 drahn Exp $        */
        !             2: /* kernel version of this file, does not have signal goop */
        !             3: /* int setjmp(jmp_buf env) */
        !             4:
        !             5: /*
        !             6:  * Copyright (c) 1996 Dale Rahn.
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  *
        !            19:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            20:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            21:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            22:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            23:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            24:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            25:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            26:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            27:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            28:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            29:  */
        !            30:
        !            31: #include <machine/asm.h>
        !            32: #define JMP_r1 0x04
        !            33: #define JMP_r14        0x08
        !            34: #define JMP_r15        0x0c
        !            35: #define JMP_r16        0x10
        !            36: #define JMP_r17        0x14
        !            37: #define JMP_r18        0x18
        !            38: #define JMP_r19        0x1c
        !            39: #define JMP_r20        0x20
        !            40: #define JMP_r21        0x24
        !            41: #define JMP_r22        0x28
        !            42: #define JMP_r23        0x2c
        !            43: #define JMP_r24        0x30
        !            44: #define JMP_r25        0x34
        !            45: #define JMP_r26        0x38
        !            46: #define JMP_r27        0x3c
        !            47: #define JMP_r28        0x40
        !            48: #define JMP_r29        0x44
        !            49: #define JMP_r30        0x48
        !            50: #define JMP_r31        0x4c
        !            51: #define JMP_lr  0x50
        !            52: #define JMP_cr  0x54
        !            53: #define JMP_ctr        0x58
        !            54: #define JMP_xer        0x5c
        !            55: #define JMP_sig        0x60
        !            56:
        !            57:
        !            58: ENTRY(_C_LABEL(setjmp))
        !            59:        stw %r31, JMP_r31(%r3)
        !            60:        /* r1, r14-r30 */
        !            61:        stw %r1,  JMP_r1 (%r3)
        !            62:        stw %r14, JMP_r14(%r3)
        !            63:        stw %r15, JMP_r15(%r3)
        !            64:        stw %r16, JMP_r16(%r3)
        !            65:        stw %r17, JMP_r17(%r3)
        !            66:        stw %r18, JMP_r18(%r3)
        !            67:        stw %r19, JMP_r19(%r3)
        !            68:        stw %r20, JMP_r20(%r3)
        !            69:        stw %r21, JMP_r21(%r3)
        !            70:        stw %r22, JMP_r22(%r3)
        !            71:        stw %r23, JMP_r23(%r3)
        !            72:        stw %r24, JMP_r24(%r3)
        !            73:        stw %r25, JMP_r25(%r3)
        !            74:        stw %r26, JMP_r26(%r3)
        !            75:        stw %r27, JMP_r27(%r3)
        !            76:        stw %r28, JMP_r28(%r3)
        !            77:        stw %r29, JMP_r29(%r3)
        !            78:        stw %r30, JMP_r30(%r3)
        !            79:        /* cr, lr, ctr, xer */
        !            80:        mfcr %r0
        !            81:        stw %r0, JMP_cr(%r3)
        !            82:        mflr %r0
        !            83:        stw %r0, JMP_lr(%r3)
        !            84:        mfctr %r0
        !            85:        stw %r0, JMP_ctr(%r3)
        !            86:        mfxer %r0
        !            87:        stw %r0, JMP_xer(%r3)
        !            88:        /* f14-f31, fpscr */
        !            89:        li %r3, 0
        !            90:        blr
        !            91:
        !            92:
        !            93: ENTRY(_C_LABEL(longjmp))
        !            94:        lwz %r31, JMP_r31(%r3)
        !            95:        /* r1, r14-r30 */
        !            96:        lwz %r1,  JMP_r1 (%r3)
        !            97:        lwz %r14, JMP_r14(%r3)
        !            98:        lwz %r15, JMP_r15(%r3)
        !            99:        lwz %r16, JMP_r16(%r3)
        !           100:        lwz %r17, JMP_r17(%r3)
        !           101:        lwz %r18, JMP_r18(%r3)
        !           102:        lwz %r19, JMP_r19(%r3)
        !           103:        lwz %r20, JMP_r20(%r3)
        !           104:        lwz %r21, JMP_r21(%r3)
        !           105:        lwz %r22, JMP_r22(%r3)
        !           106:        lwz %r23, JMP_r23(%r3)
        !           107:        lwz %r24, JMP_r24(%r3)
        !           108:        lwz %r25, JMP_r25(%r3)
        !           109:        lwz %r26, JMP_r26(%r3)
        !           110:        lwz %r27, JMP_r27(%r3)
        !           111:        lwz %r28, JMP_r28(%r3)
        !           112:        lwz %r29, JMP_r29(%r3)
        !           113:        lwz %r30, JMP_r30(%r3)
        !           114:        /* cr, lr, ctr, xer */
        !           115:        lwz %r0, JMP_cr(%r3)
        !           116:        mtcr %r0
        !           117:        lwz %r0, JMP_lr(%r3)
        !           118:        mtlr %r0
        !           119:        lwz %r0, JMP_ctr(%r3)
        !           120:        mtctr %r0
        !           121:        lwz %r0, JMP_xer(%r3)
        !           122:        mtxer %r0
        !           123:        /* f14-f31, fpscr */
        !           124:        mr %r3, %r4
        !           125:        blr