spl.S revision 1.1.2.2
1 1.1.2.2 lukem /* $NetBSD: spl.S,v 1.1.2.2 2001/08/03 04:10:59 lukem Exp $ */ 2 1.1.2.2 lukem 3 1.1.2.2 lukem /* 4 1.1.2.2 lukem * Copyright (c) 1996-1998 Mark Brinicombe. 5 1.1.2.2 lukem * Copyright (c) Brini. 6 1.1.2.2 lukem * All rights reserved. 7 1.1.2.2 lukem * 8 1.1.2.2 lukem * Redistribution and use in source and binary forms, with or without 9 1.1.2.2 lukem * modification, are permitted provided that the following conditions 10 1.1.2.2 lukem * are met: 11 1.1.2.2 lukem * 1. Redistributions of source code must retain the above copyright 12 1.1.2.2 lukem * notice, this list of conditions and the following disclaimer. 13 1.1.2.2 lukem * 2. Redistributions in binary form must reproduce the above copyright 14 1.1.2.2 lukem * notice, this list of conditions and the following disclaimer in the 15 1.1.2.2 lukem * documentation and/or other materials provided with the distribution. 16 1.1.2.2 lukem * 3. All advertising materials mentioning features or use of this software 17 1.1.2.2 lukem * must display the following acknowledgement: 18 1.1.2.2 lukem * This product includes software developed by Mark Brinicombe 19 1.1.2.2 lukem * for the NetBSD Project. 20 1.1.2.2 lukem * 4. The name of the company nor the name of the author may be used to 21 1.1.2.2 lukem * endorse or promote products derived from this software without specific 22 1.1.2.2 lukem * prior written permission. 23 1.1.2.2 lukem * 24 1.1.2.2 lukem * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 25 1.1.2.2 lukem * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 1.1.2.2 lukem * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 1.1.2.2 lukem * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 28 1.1.2.2 lukem * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 1.1.2.2 lukem * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 30 1.1.2.2 lukem * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.1.2.2 lukem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.1.2.2 lukem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.1.2.2 lukem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.1.2.2 lukem * SUCH DAMAGE. 35 1.1.2.2 lukem * 36 1.1.2.2 lukem * spl routines 37 1.1.2.2 lukem * 38 1.1.2.2 lukem * Created : 01/03/96 39 1.1.2.2 lukem */ 40 1.1.2.2 lukem 41 1.1.2.2 lukem #include "assym.h" 42 1.1.2.2 lukem #include <machine/psl.h> 43 1.1.2.2 lukem #include <machine/asm.h> 44 1.1.2.2 lukem 45 1.1.2.2 lukem .text 46 1.1.2.2 lukem .align 0 47 1.1.2.2 lukem 48 1.1.2.2 lukem Lcurrent_spl_level: 49 1.1.2.2 lukem .word _C_LABEL(current_spl_level) 50 1.1.2.2 lukem 51 1.1.2.2 lukem Lspl_masks: 52 1.1.2.2 lukem .word _C_LABEL(spl_masks) 53 1.1.2.2 lukem 54 1.1.2.2 lukem Lspl_mask: 55 1.1.2.2 lukem .word _C_LABEL(spl_mask) 56 1.1.2.2 lukem 57 1.1.2.2 lukem ENTRY(raisespl) 58 1.1.2.2 lukem mov r3, r0 /* Save the new value */ 59 1.1.2.2 lukem ldr r1, Lcurrent_spl_level /* Get the current spl level */ 60 1.1.2.2 lukem ldr r0, [r1] 61 1.1.2.2 lukem cmp r3, r0 62 1.1.2.2 lukem movle pc, lr 63 1.1.2.2 lukem 64 1.1.2.2 lukem str r3, [r1] /* Store the new spl level */ 65 1.1.2.2 lukem 66 1.1.2.2 lukem ldr r2, Lspl_masks /* Get the spl mask */ 67 1.1.2.2 lukem ldr r2, [r2, r3, lsl #2] 68 1.1.2.2 lukem 69 1.1.2.2 lukem ldr r1, Lspl_mask /* Store in the current spl mask */ 70 1.1.2.2 lukem str r2, [r1] 71 1.1.2.2 lukem 72 1.1.2.2 lukem stmfd sp!, {r0, lr} /* Preserve registers */ 73 1.1.2.2 lukem bl _C_LABEL(irq_setmasks) /* Update the actual masks */ 74 1.1.2.2 lukem ldmfd sp!, {r0, pc} /* Exit */ 75 1.1.2.2 lukem 76 1.1.2.2 lukem ENTRY(lowerspl) 77 1.1.2.2 lukem mov r3, r0 /* Save the new value */ 78 1.1.2.2 lukem ldr r1, Lcurrent_spl_level /* Get the current spl level */ 79 1.1.2.2 lukem ldr r0, [r1] 80 1.1.2.2 lukem cmp r3, r0 81 1.1.2.2 lukem movge pc, lr 82 1.1.2.2 lukem 83 1.1.2.2 lukem str r3, [r1] /* Store the new spl level */ 84 1.1.2.2 lukem 85 1.1.2.2 lukem ldr r2, Lspl_masks /* Get the spl mask */ 86 1.1.2.2 lukem ldr r2, [r2, r3, lsl #2] 87 1.1.2.2 lukem 88 1.1.2.2 lukem ldr r1, Lspl_mask /* Store in the current spl mask */ 89 1.1.2.2 lukem str r2, [r1] 90 1.1.2.2 lukem 91 1.1.2.2 lukem stmfd sp!, {r0, lr} /* Preserve registers */ 92 1.1.2.2 lukem bl _C_LABEL(irq_setmasks) /* Update the actual masks */ 93 1.1.2.2 lukem bl _C_LABEL(dosoftints) /* Process any pending soft ints */ 94 1.1.2.2 lukem ldmfd sp!, {r0, pc} /* Exit */ 95 1.1.2.2 lukem 96 1.1.2.2 lukem ENTRY(splx) 97 1.1.2.2 lukem mov r3, r0 /* Save the new value */ 98 1.1.2.2 lukem ldr r1, Lcurrent_spl_level /* Get the current spl level */ 99 1.1.2.2 lukem ldr r0, [r1] 100 1.1.2.2 lukem cmp r3, r0 101 1.1.2.2 lukem moveq pc, lr 102 1.1.2.2 lukem 103 1.1.2.2 lukem str r3, [r1] /* Store the new spl level */ 104 1.1.2.2 lukem 105 1.1.2.2 lukem ldr r2, Lspl_masks /* Get the spl mask */ 106 1.1.2.2 lukem ldr r2, [r2, r3, lsl #2] /* Use r4 so available later */ 107 1.1.2.2 lukem 108 1.1.2.2 lukem ldr r1, Lspl_mask /* Store in the current spl mask */ 109 1.1.2.2 lukem str r2, [r1] 110 1.1.2.2 lukem 111 1.1.2.2 lukem stmfd sp!, {r0, lr} /* Preserve registers */ 112 1.1.2.2 lukem bl _C_LABEL(irq_setmasks) /* Update the actual masks */ 113 1.1.2.2 lukem bl _C_LABEL(dosoftints) /* Process any pending soft ints */ 114 1.1.2.2 lukem ldmfd sp!, {r0, pc} /* Exit */ 115
Indexes created Wed Oct 22 13:09:56 GMT 2025