[d9a6ab3] | 1 | /* cpu_asm.S |
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| 2 | * |
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| 3 | * This file contains the basic algorithms for all assembly code used |
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| 4 | * in the Blackfin port of RTEMS. These algorithms must be implemented |
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| 5 | * in assembly language |
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| 6 | * |
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[4daebbd] | 7 | * Copyright (c) 2008 Kallisti Labs, Los Gatos, CA, USA |
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| 8 | * written by Allan Hessenflow <allanh@kallisti.com> |
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| 9 | * |
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| 10 | * Based on earlier version: |
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| 11 | * |
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[d9a6ab3] | 12 | * Copyright (c) 2006 by Atos Automacao Industrial Ltda. |
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[ff8dd26] | 13 | * written by Alain Schaefer <alain.schaefer@easc.ch> |
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| 14 | * and Antonio Giovanini <antonio@atos.com.br> |
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[d9a6ab3] | 15 | * |
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| 16 | * The license and distribution terms for this file may be |
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| 17 | * found in the file LICENSE in this distribution or at |
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[c499856] | 18 | * http://www.rtems.org/license/LICENSE. |
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[d9a6ab3] | 19 | */ |
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[4daebbd] | 20 | |
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[ff8dd26] | 21 | #ifdef HAVE_CONFIG_H |
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| 22 | #include "config.h" |
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| 23 | #endif |
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[4daebbd] | 24 | |
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[d9a6ab3] | 25 | #include <rtems/asm.h> |
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| 26 | #include <rtems/score/cpu_asm.h> |
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| 27 | #include <rtems/score/bfin.h> |
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[9dfd75e] | 28 | #include <rtems/bfin/bfin.h> |
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[6d42b4c6] | 29 | #include <rtems/score/percpu.h> |
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[d9a6ab3] | 30 | |
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[fbf8301] | 31 | #define LO(con32) ((con32) & 0xFFFF) |
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| 32 | #define HI(con32) (((con32) >> 16) & 0xFFFF) |
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[d9a6ab3] | 33 | |
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[4daebbd] | 34 | |
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| 35 | #if 0 |
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| 36 | /* some debug routines */ |
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[d5ec0480] | 37 | .globl SYM(_CPU_write_char); |
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| 38 | SYM(_CPU_write_char): |
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[4daebbd] | 39 | p0.h = 0xffc0; |
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| 40 | p0.l = 0x0400; |
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| 41 | txWaitLoop: |
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| 42 | r1 = w[p0 + 0x14]; |
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| 43 | cc = bittst(r1, 5); |
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| 44 | if !cc jump txWaitLoop; |
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| 45 | w[p0 + 0x00] = r0; |
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| 46 | rts; |
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| 47 | |
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[d5ec0480] | 48 | .globl SYM(_CPU_write_crlf); |
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| 49 | SYM(_CPU_write_crlf): |
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[4daebbd] | 50 | r0 = '\r'; |
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| 51 | [--sp] = rets; |
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[d5ec0480] | 52 | call SYM(_CPU_write_char); |
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[4daebbd] | 53 | rets = [sp++]; |
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| 54 | r0 = '\n'; |
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[d5ec0480] | 55 | jump SYM(_CPU_write_char); |
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[4daebbd] | 56 | |
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[d5ec0480] | 57 | SYM(_CPU_write_space): |
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[4daebbd] | 58 | r0 = ' '; |
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[d5ec0480] | 59 | jump SYM(_CPU_write_char); |
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[4daebbd] | 60 | |
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[d5ec0480] | 61 | .globl SYM(_CPU_write_nybble); |
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| 62 | SYM(_CPU_write_nybble:) |
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[4daebbd] | 63 | r1 = 0x0f; |
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| 64 | r0 = r0 & r1; |
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| 65 | r0 += '0'; |
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| 66 | r1 = '9'; |
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| 67 | cc = r0 <= r1; |
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[d5ec0480] | 68 | if cc jump SYM(_CPU_write_char); |
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[4daebbd] | 69 | r0 += 'a' - '0' - 10; |
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[d5ec0480] | 70 | jump SYM(_CPU_write_char); |
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[4daebbd] | 71 | |
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[d5ec0480] | 72 | .globl SYM(_CPU_write_byte); |
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| 73 | SYM(_CPU_write_byte): |
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[4daebbd] | 74 | [--sp] = r0; |
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| 75 | [--sp] = rets; |
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| 76 | r0 >>= 4; |
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[d5ec0480] | 77 | call SYM(_CPU_write_nybble); |
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[4daebbd] | 78 | rets = [sp++]; |
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| 79 | r0 = [sp++]; |
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[d5ec0480] | 80 | jump SYM(_CPU_write_nybble); |
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[4daebbd] | 81 | |
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[d5ec0480] | 82 | SYM(_CPU_write_chawmp): |
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[4daebbd] | 83 | [--sp] = r0; |
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| 84 | [--sp] = rets; |
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| 85 | r0 >>= 8; |
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[d5ec0480] | 86 | call SYM(_CPU_write_byte); |
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[4daebbd] | 87 | rets = [sp++]; |
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| 88 | r0 = [sp++]; |
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[d5ec0480] | 89 | jump SYM(_CPU_write_byte); |
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[4daebbd] | 90 | |
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[d5ec0480] | 91 | SYM(_CPU_write_gawble): |
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[4daebbd] | 92 | [--sp] = r0; |
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| 93 | [--sp] = rets; |
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| 94 | r0 >>= 16; |
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[d5ec0480] | 95 | call SYM(_CPU_write_chawmp); |
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[4daebbd] | 96 | rets = [sp++]; |
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| 97 | r0 = [sp++]; |
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[d5ec0480] | 98 | jump SYM(_CPU_write_chawmp); |
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[4daebbd] | 99 | |
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[d5ec0480] | 100 | SYM(_CPU_dump_registers): |
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[4daebbd] | 101 | [--sp] = rets; |
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| 102 | [--sp] = r0; |
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| 103 | [--sp] = r1; |
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| 104 | [--sp] = p0; |
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| 105 | r0 = [sp + 8]; |
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[d5ec0480] | 106 | call SYM(_CPU_write_gawble); |
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| 107 | call SYM(_CPU_write_space); |
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[4daebbd] | 108 | r0 = [sp + 4]; |
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[d5ec0480] | 109 | call SYM(_CPU_write_gawble); |
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| 110 | call SYM(_CPU_write_space); |
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[4daebbd] | 111 | r0 = r2; |
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[d5ec0480] | 112 | call SYM(_CPU_write_gawble); |
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| 113 | call SYM(_CPU_write_space); |
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[4daebbd] | 114 | r0 = r3; |
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[d5ec0480] | 115 | call SYM(_CPU_write_gawble); |
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| 116 | call SYM(_CPU_write_space); |
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[4daebbd] | 117 | r0 = r4; |
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[d5ec0480] | 118 | call SYM(_CPU_write_gawble); |
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| 119 | call SYM(_CPU_write_space); |
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[4daebbd] | 120 | r0 = r5; |
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[d5ec0480] | 121 | call SYM(_CPU_write_gawble); |
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| 122 | call SYM(_CPU_write_space); |
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[4daebbd] | 123 | r0 = r6; |
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[d5ec0480] | 124 | call SYM(_CPU_write_gawble); |
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| 125 | call SYM(_CPU_write_space); |
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[4daebbd] | 126 | r0 = r7; |
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[d5ec0480] | 127 | call SYM(_CPU_write_gawble); |
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| 128 | call SYM(_CPU_write_crlf); |
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[4daebbd] | 129 | r0 = [sp]; |
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[d5ec0480] | 130 | call SYM(_CPU_write_gawble); |
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| 131 | call SYM(_CPU_write_space); |
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[4daebbd] | 132 | r0 = p1; |
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[d5ec0480] | 133 | call SYM(_CPU_write_gawble); |
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| 134 | call SYM(_CPU_write_space); |
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[4daebbd] | 135 | r0 = p2; |
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[d5ec0480] | 136 | call SYM(_CPU_write_gawble); |
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| 137 | call SYM(_CPU_write_space); |
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[4daebbd] | 138 | r0 = p3; |
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[d5ec0480] | 139 | call SYM(_CPU_write_gawble); |
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| 140 | call SYM(_CPU_write_space); |
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[4daebbd] | 141 | r0 = p4; |
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[d5ec0480] | 142 | call SYM(_CPU_write_gawble); |
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| 143 | call SYM(_CPU_write_space); |
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[4daebbd] | 144 | r0 = p5; |
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[d5ec0480] | 145 | call SYM(_CPU_write_gawble); |
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| 146 | call SYM(_CPU_write_space); |
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[4daebbd] | 147 | r0 = fp; |
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[d5ec0480] | 148 | call SYM(_CPU_write_gawble); |
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| 149 | call SYM(_CPU_write_space); |
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[4daebbd] | 150 | r0 = sp; |
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| 151 | r0 += 16; |
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[d5ec0480] | 152 | call SYM(_CPU_write_gawble); |
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| 153 | call SYM(_CPU_write_crlf); |
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[4daebbd] | 154 | |
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| 155 | p0 = [sp++]; |
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| 156 | r1 = [sp++]; |
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| 157 | r0 = [sp++]; |
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| 158 | rets = [sp++]; |
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| 159 | rts; |
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| 160 | |
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[d5ec0480] | 161 | .globl SYM(_CPU_Exception_handler); |
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| 162 | SYM(_CPU_Exception_handler): |
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[4daebbd] | 163 | usp = sp; |
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| 164 | sp.h = 0xffb0; |
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| 165 | sp.l = 0x1000; |
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| 166 | [--sp] = (r7:0,p5:0); |
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| 167 | |
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| 168 | r0 = 'x'; |
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[d5ec0480] | 169 | call SYM(_CPU_write_char); |
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[4daebbd] | 170 | jump hcf; |
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| 171 | |
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| 172 | |
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[d5ec0480] | 173 | .globl SYM(_CPU_Emulation_handler); |
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| 174 | SYM(_CPU_Emulation_handler): |
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[4daebbd] | 175 | usp = sp; |
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| 176 | sp.h = 0xffb0; |
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| 177 | sp.l = 0x1000; |
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| 178 | [--sp] = (r7:0,p5:0); |
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| 179 | |
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| 180 | r0 = 'e'; |
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[d5ec0480] | 181 | call SYM(_CPU_write_char); |
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[4daebbd] | 182 | jump hcf; |
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| 183 | |
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[d5ec0480] | 184 | .globl SYM(_CPU_Reset_handler); |
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| 185 | SYM(_CPU_Reset_handler): |
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[4daebbd] | 186 | usp = sp; |
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| 187 | sp.h = 0xffb0; |
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| 188 | sp.l = 0x1000; |
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| 189 | [--sp] = (r7:0,p5:0); |
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| 190 | |
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| 191 | r0 = 'r'; |
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[d5ec0480] | 192 | call SYM(_CPU_write_char); |
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[4daebbd] | 193 | jump hcf; |
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| 194 | |
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[d5ec0480] | 195 | .globl SYM(_CPU_NMI_handler); |
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| 196 | SYM(_CPU_NMI_handler): |
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[4daebbd] | 197 | usp = sp; |
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| 198 | sp.h = 0xffb0; |
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| 199 | sp.l = 0x1000; |
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| 200 | [--sp] = (r7:0,p5:0); |
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| 201 | |
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| 202 | r0 = 'n'; |
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[d5ec0480] | 203 | call SYM(_CPU_write_char); |
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[4daebbd] | 204 | jump hcf; |
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| 205 | |
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[d5ec0480] | 206 | .globl SYM(_CPU_Unhandled_Interrupt_handler); |
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| 207 | SYM(_CPU_Unhandled_Interrupt_handler): |
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[4daebbd] | 208 | usp = sp; |
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| 209 | sp.h = 0xffb0; |
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| 210 | sp.l = 0x1000; |
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| 211 | [--sp] = (r7:0,p5:0); |
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| 212 | |
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[d5ec0480] | 213 | call SYM(_CPU_write_crlf); |
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[4daebbd] | 214 | r0 = 'i'; |
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[d5ec0480] | 215 | call SYM(_CPU_write_char); |
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[4daebbd] | 216 | p0.h = HI(IPEND); |
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| 217 | p0.l = LO(IPEND); |
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| 218 | r0 = [p0]; |
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[d5ec0480] | 219 | call SYM(_CPU_write_chawmp); |
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[4daebbd] | 220 | jump hcf; |
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| 221 | |
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| 222 | hcf: |
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| 223 | idle; |
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| 224 | jump hcf; |
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| 225 | |
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| 226 | #endif |
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| 227 | |
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| 228 | |
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[d9a6ab3] | 229 | /* _CPU_Context_switch |
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| 230 | * |
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| 231 | * This routine performs a normal non-FP context switch. |
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| 232 | * |
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| 233 | * bfin Specific Information: |
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| 234 | * |
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| 235 | * For now we simply save all registers. |
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[4daebbd] | 236 | * |
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[d9a6ab3] | 237 | */ |
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| 238 | |
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[4daebbd] | 239 | /* make sure this sequence stays in sync with the definition for |
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| 240 | Context_Control in rtems/score/cpu.h */ |
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[d5ec0480] | 241 | .globl SYM(_CPU_Context_switch) |
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| 242 | SYM(_CPU_Context_switch): |
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[4daebbd] | 243 | /* Start saving context R0 = current, R1=heir */ |
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| 244 | p0 = r0; |
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| 245 | [p0++] = r4; |
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| 246 | [p0++] = r5; |
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| 247 | [p0++] = r6; |
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| 248 | [p0++] = r7; |
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| 249 | |
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| 250 | /* save pointer registers */ |
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| 251 | [p0++] = p3; |
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| 252 | [p0++] = p4; |
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| 253 | [p0++] = p5; |
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| 254 | [p0++] = fp; |
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| 255 | [p0++] = sp; |
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| 256 | |
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| 257 | /* save rets */ |
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| 258 | r0 = rets; |
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| 259 | [p0++] = r0; |
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| 260 | |
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| 261 | /* save IMASK */ |
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| 262 | p1.h = HI(IMASK); |
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| 263 | p1.l = LO(IMASK); |
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| 264 | r0 = [p1]; |
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| 265 | [p0++] = r0; |
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[d9a6ab3] | 266 | |
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[4daebbd] | 267 | p0 = r1; |
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[d9a6ab3] | 268 | restore: |
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[4daebbd] | 269 | /* restore data registers */ |
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| 270 | r4 = [p0++]; |
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| 271 | r5 = [p0++]; |
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| 272 | r6 = [p0++]; |
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| 273 | r7 = [p0++]; |
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| 274 | |
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| 275 | /* restore pointer registers */ |
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| 276 | p3 = [p0++]; |
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| 277 | p4 = [p0++]; |
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| 278 | p5 = [p0++]; |
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| 279 | fp = [p0++]; |
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| 280 | sp = [p0++]; |
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| 281 | |
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| 282 | /* restore rets */ |
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| 283 | r0 = [p0++]; |
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| 284 | rets = r0; |
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| 285 | |
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| 286 | /* restore IMASK */ |
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| 287 | r0 = [p0++]; |
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| 288 | p1.h = HI(IMASK); |
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| 289 | p1.l = LO(IMASK); |
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| 290 | [p1] = r0; |
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| 291 | |
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| 292 | rts; |
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| 293 | |
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[d9a6ab3] | 294 | |
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| 295 | /* |
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| 296 | * _CPU_Context_restore |
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| 297 | * |
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| 298 | * This routine is generally used only to restart self in an |
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| 299 | * efficient manner. It may simply be a label in _CPU_Context_switch. |
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| 300 | * |
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| 301 | * NOTE: May be unnecessary to reload some registers. |
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| 302 | * |
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| 303 | * Blackfin Specific Information: |
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| 304 | * |
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| 305 | * none |
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| 306 | * |
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| 307 | */ |
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[d5ec0480] | 308 | .globl SYM(_CPU_Context_restore) |
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| 309 | SYM(_CPU_Context_restore): |
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[4daebbd] | 310 | p0 = r0; |
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| 311 | jump restore; |
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| 312 | |
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| 313 | |
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[d5ec0480] | 314 | .globl SYM(_ISR_Handler) |
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| 315 | SYM(_ISR_Handler): |
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[4daebbd] | 316 | /* all interrupts are disabled at this point */ |
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| 317 | /* the following few items are pushed onto the task stack for at |
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| 318 | most one interrupt; nested interrupts will be using the interrupt |
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| 319 | stack for everything. */ |
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| 320 | [--sp] = astat; |
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| 321 | [--sp] = p1; |
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| 322 | [--sp] = p0; |
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| 323 | [--sp] = r1; |
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| 324 | [--sp] = r0; |
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[6d42b4c6] | 325 | p0.h = ISR_NEST_LEVEL; |
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| 326 | p0.l = ISR_NEST_LEVEL; |
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[4daebbd] | 327 | r0 = [p0]; |
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| 328 | r0 += 1; |
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| 329 | [p0] = r0; |
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| 330 | cc = r0 <= 1 (iu); |
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| 331 | if !cc jump noStackSwitch; |
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| 332 | /* setup interrupt stack */ |
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| 333 | r0 = sp; |
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[6d42b4c6] | 334 | p0.h = INTERRUPT_STACK_HIGH; |
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| 335 | p0.l = INTERRUPT_STACK_HIGH; |
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[4daebbd] | 336 | sp = [p0]; |
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| 337 | [--sp] = r0; |
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| 338 | noStackSwitch: |
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| 339 | /* disable thread dispatch */ |
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[d19cce29] | 340 | p0.h = THREAD_DISPATCH_DISABLE_LEVEL; |
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| 341 | p0.l = THREAD_DISPATCH_DISABLE_LEVEL; |
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[4daebbd] | 342 | r0 = [p0]; |
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| 343 | r0 += 1; |
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| 344 | [p0] = r0; |
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| 345 | |
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| 346 | [--sp] = reti; /* interrupts are now enabled */ |
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| 347 | |
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| 348 | /* figure out what vector we are */ |
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| 349 | p0.h = HI(IPEND); |
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| 350 | p0.l = LO(IPEND); |
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| 351 | r1 = [p0]; |
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| 352 | /* we should only get here for events that require RTI to return */ |
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| 353 | r1 = r1 >> 5; |
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| 354 | r0 = 4; |
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| 355 | /* at least one bit must be set, so this loop will exit */ |
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| 356 | vectorIDLoop: |
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| 357 | r0 += 1; |
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| 358 | r1 = rot r1 by -1; |
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| 359 | if !cc jump vectorIDLoop; |
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| 360 | |
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| 361 | [--sp] = r2; |
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[03b7789] | 362 | r2.h = SYM(_ISR_Vector_table); |
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| 363 | r2.l = SYM(_ISR_Vector_table); |
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[4daebbd] | 364 | r1 = r0 << 2; |
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| 365 | r1 = r1 + r2; |
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| 366 | p0 = r1; |
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| 367 | p0 = [p0]; |
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| 368 | cc = p0 == 0; |
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| 369 | if cc jump noHandler; |
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| 370 | |
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| 371 | /* r2, r0, r1, p0, p1, astat are already saved */ |
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| 372 | [--sp] = a1.x; |
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| 373 | [--sp] = a1.w; |
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| 374 | [--sp] = a0.x; |
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| 375 | [--sp] = a0.w; |
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| 376 | [--sp] = r3; |
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| 377 | [--sp] = p3; |
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| 378 | [--sp] = p2; |
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| 379 | [--sp] = lc1; |
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| 380 | [--sp] = lc0; |
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[32eadeb] | 381 | [--sp] = lt1; |
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| 382 | [--sp] = lt0; |
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[4daebbd] | 383 | [--sp] = lb1; |
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| 384 | [--sp] = lb0; |
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| 385 | [--sp] = i3; |
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| 386 | [--sp] = i2; |
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| 387 | [--sp] = i1; |
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| 388 | [--sp] = i0; |
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| 389 | [--sp] = m3; |
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| 390 | [--sp] = m2; |
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| 391 | [--sp] = m1; |
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| 392 | [--sp] = m0; |
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| 393 | [--sp] = l3; |
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| 394 | [--sp] = l2; |
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| 395 | [--sp] = l1; |
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| 396 | [--sp] = l0; |
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| 397 | [--sp] = b3; |
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| 398 | [--sp] = b2; |
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| 399 | [--sp] = b1; |
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| 400 | [--sp] = b0; |
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| 401 | [--sp] = rets; |
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| 402 | /* call user isr; r0 = vector number, r1 = frame pointer */ |
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[32eadeb] | 403 | r1 = fp; /* is this really what should be passed here? */ |
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| 404 | r2 = 0; |
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| 405 | l0 = r2; |
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| 406 | l1 = r2; |
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| 407 | l2 = r2; |
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| 408 | l3 = r2; |
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[4daebbd] | 409 | sp += -12; /* bizarre abi... */ |
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| 410 | call (p0); |
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| 411 | sp += 12; |
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| 412 | rets = [sp++]; |
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| 413 | b0 = [sp++]; |
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| 414 | b1 = [sp++]; |
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| 415 | b2 = [sp++]; |
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| 416 | b3 = [sp++]; |
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| 417 | l0 = [sp++]; |
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| 418 | l1 = [sp++]; |
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| 419 | l2 = [sp++]; |
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| 420 | l3 = [sp++]; |
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| 421 | m0 = [sp++]; |
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| 422 | m1 = [sp++]; |
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| 423 | m2 = [sp++]; |
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| 424 | m3 = [sp++]; |
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| 425 | i0 = [sp++]; |
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| 426 | i1 = [sp++]; |
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| 427 | i2 = [sp++]; |
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| 428 | i3 = [sp++]; |
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| 429 | lb0 = [sp++]; |
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| 430 | lb1 = [sp++]; |
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| 431 | lt0 = [sp++]; |
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| 432 | lt1 = [sp++]; |
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[32eadeb] | 433 | lc0 = [sp++]; |
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| 434 | lc1 = [sp++]; |
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[4daebbd] | 435 | p2 = [sp++]; |
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| 436 | p3 = [sp++]; |
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| 437 | r3 = [sp++]; |
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| 438 | a0.w = [sp++]; |
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| 439 | a0.x = [sp++]; |
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| 440 | a1.w = [sp++]; |
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| 441 | a1.x = [sp++]; |
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| 442 | |
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| 443 | noHandler: |
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| 444 | r2 = [sp++]; |
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| 445 | /* this disables interrupts again */ |
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| 446 | reti = [sp++]; |
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| 447 | |
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[6d42b4c6] | 448 | p0.h = ISR_NEST_LEVEL; |
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| 449 | p0.l = ISR_NEST_LEVEL; |
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[4daebbd] | 450 | r0 = [p0]; |
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| 451 | r0 += -1; |
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| 452 | [p0] = r0; |
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| 453 | cc = r0 == 0; |
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| 454 | if !cc jump noStackRestore; |
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| 455 | sp = [sp]; |
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| 456 | noStackRestore: |
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| 457 | |
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[0067feb] | 458 | /* check this stuff to ensure context_switch_necessary and |
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[4daebbd] | 459 | isr_signals_to_thread_executing are being handled appropriately. */ |
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[d19cce29] | 460 | p0.h = THREAD_DISPATCH_DISABLE_LEVEL; |
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| 461 | p0.l = THREAD_DISPATCH_DISABLE_LEVEL; |
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[4daebbd] | 462 | r0 = [p0]; |
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| 463 | r0 += -1; |
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| 464 | [p0] = r0; |
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| 465 | cc = r0 == 0; |
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| 466 | if !cc jump noDispatch |
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| 467 | |
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| 468 | /* do thread dispatch if necessary */ |
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[6d42b4c6] | 469 | p0.h = DISPATCH_NEEDED; |
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| 470 | p0.l = DISPATCH_NEEDED; |
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[0067feb] | 471 | r0 = B[p0] (Z); |
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[4daebbd] | 472 | cc = r0 == 0; |
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| 473 | if cc jump noDispatch |
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| 474 | doDispatch: |
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| 475 | r0 = 0; |
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[0067feb] | 476 | B[p0] = r0; |
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[4daebbd] | 477 | raise 15; |
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| 478 | noDispatch: |
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| 479 | r0 = [sp++]; |
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| 480 | r1 = [sp++]; |
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| 481 | p0 = [sp++]; |
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| 482 | p1 = [sp++]; |
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| 483 | astat = [sp++]; |
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| 484 | rti |
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| 485 | |
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| 486 | |
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| 487 | /* the approach here is for the main interrupt handler, when a dispatch is |
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| 488 | wanted, to do a "raise 15". when the main interrupt handler does its |
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| 489 | "rti", the "raise 15" takes effect and we end up here. we can now |
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| 490 | safely call _Thread_Dispatch, and do an "rti" to get back to the |
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| 491 | original interrupted function. this does require self-nesting to be |
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| 492 | enabled; the maximum nest depth is the number of tasks. */ |
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[d5ec0480] | 493 | .global SYM(_ISR15_Handler) |
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| 494 | SYM(_ISR15_Handler): |
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[4daebbd] | 495 | [--sp] = reti; |
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| 496 | [--sp] = rets; |
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| 497 | [--sp] = astat; |
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| 498 | [--sp] = a1.x; |
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| 499 | [--sp] = a1.w; |
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| 500 | [--sp] = a0.x; |
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| 501 | [--sp] = a0.w; |
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| 502 | [--sp] = r3; |
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| 503 | [--sp] = r2; |
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| 504 | [--sp] = r1; |
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| 505 | [--sp] = r0; |
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| 506 | [--sp] = p3; |
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| 507 | [--sp] = p2; |
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| 508 | [--sp] = p1; |
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| 509 | [--sp] = p0; |
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| 510 | [--sp] = lc1; |
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| 511 | [--sp] = lc0; |
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[32eadeb] | 512 | [--sp] = lt1; |
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| 513 | [--sp] = lt0; |
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[4daebbd] | 514 | [--sp] = lb1; |
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| 515 | [--sp] = lb0; |
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| 516 | [--sp] = i3; |
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| 517 | [--sp] = i2; |
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| 518 | [--sp] = i1; |
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| 519 | [--sp] = i0; |
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| 520 | [--sp] = m3; |
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| 521 | [--sp] = m2; |
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| 522 | [--sp] = m1; |
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| 523 | [--sp] = m0; |
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| 524 | [--sp] = l3; |
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| 525 | [--sp] = l2; |
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| 526 | [--sp] = l1; |
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| 527 | [--sp] = l0; |
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| 528 | [--sp] = b3; |
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| 529 | [--sp] = b2; |
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| 530 | [--sp] = b1; |
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| 531 | [--sp] = b0; |
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[32eadeb] | 532 | r2 = 0; |
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| 533 | l0 = r2; |
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| 534 | l1 = r2; |
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| 535 | l2 = r2; |
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| 536 | l3 = r2; |
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[4daebbd] | 537 | sp += -12; /* bizarre abi... */ |
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[d5ec0480] | 538 | call SYM(_Thread_Dispatch); |
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[4daebbd] | 539 | sp += 12; |
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| 540 | b0 = [sp++]; |
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| 541 | b1 = [sp++]; |
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| 542 | b2 = [sp++]; |
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| 543 | b3 = [sp++]; |
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| 544 | l0 = [sp++]; |
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| 545 | l1 = [sp++]; |
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| 546 | l2 = [sp++]; |
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| 547 | l3 = [sp++]; |
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| 548 | m0 = [sp++]; |
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| 549 | m1 = [sp++]; |
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| 550 | m2 = [sp++]; |
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| 551 | m3 = [sp++]; |
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| 552 | i0 = [sp++]; |
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| 553 | i1 = [sp++]; |
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| 554 | i2 = [sp++]; |
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| 555 | i3 = [sp++]; |
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| 556 | lb0 = [sp++]; |
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| 557 | lb1 = [sp++]; |
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| 558 | lt0 = [sp++]; |
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| 559 | lt1 = [sp++]; |
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[32eadeb] | 560 | lc0 = [sp++]; |
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| 561 | lc1 = [sp++]; |
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[4daebbd] | 562 | p0 = [sp++]; |
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| 563 | p1 = [sp++]; |
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| 564 | p2 = [sp++]; |
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| 565 | p3 = [sp++]; |
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| 566 | r0 = [sp++]; |
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| 567 | r1 = [sp++]; |
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| 568 | r2 = [sp++]; |
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| 569 | r3 = [sp++]; |
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| 570 | a0.w = [sp++]; |
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| 571 | a0.x = [sp++]; |
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| 572 | a1.w = [sp++]; |
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| 573 | a1.x = [sp++]; |
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| 574 | astat = [sp++]; |
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| 575 | rets = [sp++]; |
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| 576 | reti = [sp++]; |
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| 577 | rti; |
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[d9a6ab3] | 578 | |
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