exception.S revision 1.1.2.4
1 1.1.2.4 jdolecek /* $NetBSD: exception.S,v 1.1.2.4 2002/02/11 20:07:18 jdolecek Exp $ */ 2 1.1.2.2 lukem 3 1.1.2.2 lukem /* 4 1.1.2.2 lukem * Copyright (c) 1994-1997 Mark Brinicombe. 5 1.1.2.2 lukem * Copyright (c) 1994 Brini. 6 1.1.2.2 lukem * All rights reserved. 7 1.1.2.2 lukem * 8 1.1.2.2 lukem * This code is derived from software written for Brini by Mark Brinicombe 9 1.1.2.2 lukem * 10 1.1.2.2 lukem * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 lukem * modification, are permitted provided that the following conditions 12 1.1.2.2 lukem * are met: 13 1.1.2.2 lukem * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 lukem * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 lukem * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 lukem * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 lukem * documentation and/or other materials provided with the distribution. 18 1.1.2.2 lukem * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 lukem * must display the following acknowledgement: 20 1.1.2.2 lukem * This product includes software developed by Brini. 21 1.1.2.2 lukem * 4. The name of the company nor the name of the author may be used to 22 1.1.2.2 lukem * endorse or promote products derived from this software without specific 23 1.1.2.2 lukem * prior written permission. 24 1.1.2.2 lukem * 25 1.1.2.2 lukem * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED 26 1.1.2.2 lukem * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 27 1.1.2.2 lukem * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 1.1.2.2 lukem * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 29 1.1.2.2 lukem * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 30 1.1.2.2 lukem * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 31 1.1.2.2 lukem * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 1.1.2.2 lukem * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 1.1.2.2 lukem * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 1.1.2.2 lukem * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 1.1.2.2 lukem * SUCH DAMAGE. 36 1.1.2.2 lukem * 37 1.1.2.2 lukem * RiscBSD kernel project 38 1.1.2.2 lukem * 39 1.1.2.2 lukem * exception.S 40 1.1.2.2 lukem * 41 1.1.2.2 lukem * Low level handlers for exception vectors 42 1.1.2.2 lukem * 43 1.1.2.2 lukem * Created : 24/09/94 44 1.1.2.2 lukem * 45 1.1.2.2 lukem * Based on kate/display/abort.s 46 1.1.2.2 lukem */ 47 1.1.2.2 lukem 48 1.1.2.2 lukem #include "opt_ipkdb.h" 49 1.1.2.2 lukem #include <machine/asm.h> 50 1.1.2.2 lukem #include <machine/cpu.h> 51 1.1.2.2 lukem #include <machine/frame.h> 52 1.1.2.2 lukem #include "assym.h" 53 1.1.2.2 lukem 54 1.1.2.2 lukem .text 55 1.1.2.2 lukem .align 0 56 1.1.2.2 lukem 57 1.1.2.2 lukem Lastpending: 58 1.1.2.2 lukem .word _C_LABEL(astpending) 59 1.1.2.2 lukem 60 1.1.2.2 lukem /* 61 1.1.2.2 lukem * General exception exit handler 62 1.1.2.2 lukem * 63 1.1.2.2 lukem * It exits straight away if not returning to USR mode. 64 1.1.2.2 lukem * This loops around delivering any pending ASTs. 65 1.1.2.2 lukem * Interrupts are disabled at suitable points to avoid ASTs 66 1.1.2.2 lukem * being posted between testing and exit to user mode. 67 1.1.2.2 lukem * 68 1.1.2.2 lukem * This function uses PULLFRAMEFROMSVCANDEXIT thus should 69 1.1.2.2 lukem * only be called if the exception handler used PUSHFRAMEINSVC 70 1.1.2.2 lukem */ 71 1.1.2.2 lukem 72 1.1.2.2 lukem exception_exit: 73 1.1.2.2 lukem mrs r4, cpsr_all /* Get CPSR */ 74 1.1.2.2 lukem 75 1.1.2.2 lukem ldr r0, [sp] /* Get the SPSR from stack */ 76 1.1.2.2 lukem and r0, r0, #(PSR_MODE) /* Test for USR32 mode before the AST */ 77 1.1.2.2 lukem teq r0, #(PSR_USR32_MODE) 78 1.1.2.2 lukem bne do_exit /* Not USR mode so no AST delivery */ 79 1.1.2.2 lukem 80 1.1.2.2 lukem ldr r5, Lastpending /* Get address of astpending */ 81 1.1.2.2 lukem 82 1.1.2.2 lukem Lexception_exit_loop: 83 1.1.2.2 lukem orr r0, r4, #(I32_bit) /* Block IRQs */ 84 1.1.2.2 lukem msr cpsr_all, r0 85 1.1.2.2 lukem 86 1.1.2.2 lukem ldr r1, [r5] /* Do we have an AST pending */ 87 1.1.2.2 lukem teq r1, #0x00000000 88 1.1.2.2 lukem bne do_ast 89 1.1.2.2 lukem 90 1.1.2.2 lukem PULLFRAMEFROMSVCANDEXIT /* No AST so exit */ 91 1.1.2.2 lukem 92 1.1.2.2 lukem do_ast: 93 1.1.2.2 lukem mov r1, #0x00000000 /* Clear ast pending */ 94 1.1.2.2 lukem str r1, [r5] 95 1.1.2.2 lukem 96 1.1.2.3 thorpej msr cpsr_all, r4 /* Restore interrupts */ 97 1.1.2.3 thorpej 98 1.1.2.2 lukem mov r0, sp /* arg 0 = trap frame */ 99 1.1.2.2 lukem bl _C_LABEL(ast) /* call the AST handler */ 100 1.1.2.2 lukem b Lexception_exit_loop /* Try and exit again */ 101 1.1.2.2 lukem 102 1.1.2.2 lukem do_exit: 103 1.1.2.2 lukem orr r0, r4, #(I32_bit) /* Disable interupts */ 104 1.1.2.2 lukem msr cpsr_all, r0 105 1.1.2.2 lukem 106 1.1.2.2 lukem PULLFRAMEFROMSVCANDEXIT /* Restore the trap frame and exit */ 107 1.1.2.2 lukem 108 1.1.2.3 thorpej /* 109 1.1.2.3 thorpej * reset_entry: 110 1.1.2.3 thorpej * 111 1.1.2.3 thorpej * Handler for Reset exception. 112 1.1.2.3 thorpej */ 113 1.1.2.3 thorpej ASENTRY_NP(reset_entry) 114 1.1.2.3 thorpej adr r0, Lreset_panicmsg 115 1.1.2.3 thorpej mov r1, lr 116 1.1.2.3 thorpej bl _C_LABEL(panic) 117 1.1.2.3 thorpej /* NOTREACHED */ 118 1.1.2.3 thorpej Lreset_panicmsg: 119 1.1.2.3 thorpej .asciz "Reset vector called, LR = 0x%08x" 120 1.1.2.3 thorpej .balign 4 121 1.1.2.2 lukem 122 1.1.2.3 thorpej /* 123 1.1.2.3 thorpej * swi_entry 124 1.1.2.3 thorpej * 125 1.1.2.3 thorpej * Handler for the Software Interrupt exception. 126 1.1.2.3 thorpej */ 127 1.1.2.3 thorpej ASENTRY_NP(swi_entry) 128 1.1.2.3 thorpej PUSHFRAME 129 1.1.2.2 lukem 130 1.1.2.3 thorpej mov r0, sp /* Pass the frame to any function */ 131 1.1.2.2 lukem 132 1.1.2.4 jdolecek bl _C_LABEL(swi_handler) /* It's a SWI ! */ 133 1.1.2.2 lukem 134 1.1.2.3 thorpej ldr r5, Lastpending /* Get address of astpending */ 135 1.1.2.3 thorpej mrs r4, cpsr_all /* Get CPSR */ 136 1.1.2.2 lukem 137 1.1.2.3 thorpej swi_exit_loop: 138 1.1.2.3 thorpej orr r0, r4, #(I32_bit) /* Disable IRQs */ 139 1.1.2.3 thorpej msr cpsr_all, r0 140 1.1.2.2 lukem 141 1.1.2.3 thorpej ldr r1, [r5] /* Do we have an AST pending */ 142 1.1.2.3 thorpej teq r1, #0x00000000 143 1.1.2.3 thorpej bne do_swi_ast 144 1.1.2.2 lukem 145 1.1.2.3 thorpej PULLFRAME 146 1.1.2.3 thorpej movs pc, lr /* Exit */ 147 1.1.2.3 thorpej 148 1.1.2.3 thorpej do_swi_ast: 149 1.1.2.3 thorpej mov r1, #0x00000000 /* Clear ast pending */ 150 1.1.2.3 thorpej str r1, [r5] 151 1.1.2.2 lukem 152 1.1.2.3 thorpej msr cpsr_all, r4 /* Restore interrupts */ 153 1.1.2.2 lukem 154 1.1.2.3 thorpej mov r0, sp /* arg 0 = trap frame */ 155 1.1.2.3 thorpej bl _C_LABEL(ast) /* call the AST handler */ 156 1.1.2.3 thorpej b swi_exit_loop /* Try and exit again */ 157 1.1.2.3 thorpej 158 1.1.2.3 thorpej /* 159 1.1.2.3 thorpej * prefetch_abort_entry: 160 1.1.2.3 thorpej * 161 1.1.2.3 thorpej * Handler for the Prefetch Abort exception. 162 1.1.2.3 thorpej */ 163 1.1.2.2 lukem ASENTRY_NP(prefetch_abort_entry) 164 1.1.2.2 lukem sub lr, lr, #0x00000004 /* Adjust the lr */ 165 1.1.2.2 lukem 166 1.1.2.2 lukem PUSHFRAMEINSVC 167 1.1.2.2 lukem 168 1.1.2.2 lukem mov r0, sp /* pass the stack pointer as r0 */ 169 1.1.2.2 lukem 170 1.1.2.2 lukem add lr, pc, #exception_exit - . - 8 171 1.1.2.2 lukem ldr r1, Lprefetch_abort_handler_address 172 1.1.2.2 lukem ldr pc, [r1] 173 1.1.2.2 lukem 174 1.1.2.2 lukem Lprefetch_abort_handler_address: 175 1.1.2.2 lukem .word _C_LABEL(prefetch_abort_handler_address) 176 1.1.2.2 lukem 177 1.1.2.2 lukem .data 178 1.1.2.2 lukem .global _C_LABEL(prefetch_abort_handler_address) 179 1.1.2.2 lukem 180 1.1.2.2 lukem _C_LABEL(prefetch_abort_handler_address): 181 1.1.2.2 lukem .word abortprefetch 182 1.1.2.2 lukem 183 1.1.2.2 lukem .text 184 1.1.2.2 lukem abortprefetch: 185 1.1.2.2 lukem add r0, pc, #abortprefetchmsg - . - 8 186 1.1.2.2 lukem b _C_LABEL(panic) 187 1.1.2.2 lukem 188 1.1.2.2 lukem abortprefetchmsg: 189 1.1.2.2 lukem .asciz "abortprefetch" 190 1.1.2.2 lukem .align 0 191 1.1.2.2 lukem 192 1.1.2.2 lukem /* 193 1.1.2.3 thorpej * data_abort_entry: 194 1.1.2.2 lukem * 195 1.1.2.3 thorpej * Handler for the Data Abort exception. 196 1.1.2.2 lukem */ 197 1.1.2.3 thorpej ASENTRY_NP(data_abort_entry) 198 1.1.2.3 thorpej sub lr, lr, #0x00000008 /* Adjust the lr */ 199 1.1.2.2 lukem 200 1.1.2.3 thorpej PUSHFRAMEINSVC /* Push trap frame and switch */ 201 1.1.2.3 thorpej /* to SVC32 mode */ 202 1.1.2.2 lukem 203 1.1.2.3 thorpej mov r0, sp /* pass the stack pointer as r0 */ 204 1.1.2.2 lukem 205 1.1.2.3 thorpej add lr, pc, #exception_exit - . - 8 206 1.1.2.3 thorpej ldr r1, Ldata_abort_handler_address 207 1.1.2.3 thorpej ldr pc, [r1] 208 1.1.2.2 lukem 209 1.1.2.3 thorpej Ldata_abort_handler_address: 210 1.1.2.3 thorpej .word _C_LABEL(data_abort_handler_address) 211 1.1.2.2 lukem 212 1.1.2.3 thorpej .data 213 1.1.2.3 thorpej .global _C_LABEL(data_abort_handler_address) 214 1.1.2.3 thorpej _C_LABEL(data_abort_handler_address): 215 1.1.2.3 thorpej .word abortdata 216 1.1.2.2 lukem 217 1.1.2.3 thorpej .text 218 1.1.2.3 thorpej abortdata: 219 1.1.2.3 thorpej add r0, pc, #abortdatamsg - . - 8 220 1.1.2.3 thorpej b _C_LABEL(panic) 221 1.1.2.2 lukem 222 1.1.2.3 thorpej abortdatamsg: 223 1.1.2.3 thorpej .asciz "abortdata" 224 1.1.2.3 thorpej .align 0 225 1.1.2.2 lukem 226 1.1.2.2 lukem /* 227 1.1.2.3 thorpej * address_exception_entry: 228 1.1.2.3 thorpej * 229 1.1.2.3 thorpej * Handler for the Address Exception exception. 230 1.1.2.3 thorpej * 231 1.1.2.3 thorpej * NOTE: This exception isn't really used on arm32. We 232 1.1.2.3 thorpej * print a warning message to the console and then treat 233 1.1.2.3 thorpej * it like a Data Abort. 234 1.1.2.2 lukem */ 235 1.1.2.3 thorpej ASENTRY_NP(address_exception_entry) 236 1.1.2.3 thorpej mrs r1, cpsr_all 237 1.1.2.3 thorpej mrs r2, spsr_all 238 1.1.2.3 thorpej mov r3, lr 239 1.1.2.3 thorpej adr r0, Laddress_exception_msg 240 1.1.2.3 thorpej bl _C_LABEL(printf) /* XXX CLOBBERS LR!! */ 241 1.1.2.3 thorpej b data_abort_entry 242 1.1.2.3 thorpej Laddress_exception_msg: 243 1.1.2.3 thorpej .asciz "Address Exception CPSR=0x%08x SPSR=0x%08x LR=0x%08x\n" 244 1.1.2.3 thorpej .balign 4 245 1.1.2.2 lukem 246 1.1.2.3 thorpej /* 247 1.1.2.3 thorpej * undefined_entry: 248 1.1.2.3 thorpej * 249 1.1.2.3 thorpej * Handler for the Undefined Instruction exception. 250 1.1.2.3 thorpej * 251 1.1.2.3 thorpej * We indirect the undefined vector via the handler address 252 1.1.2.3 thorpej * in the data area. Entry to the undefined handler must 253 1.1.2.3 thorpej * look like direct entry from the vector. 254 1.1.2.3 thorpej */ 255 1.1.2.2 lukem ASENTRY_NP(undefined_entry) 256 1.1.2.2 lukem #ifdef IPKDB 257 1.1.2.2 lukem /* 258 1.1.2.2 lukem * IPKDB must be hooked in at the earliest possible entry point. 259 1.1.2.2 lukem * 260 1.1.2.2 lukem */ 261 1.1.2.2 lukem /* 262 1.1.2.2 lukem * Make room for all registers saving real r0-r7 and r15. 263 1.1.2.2 lukem * The remaining registers are updated later. 264 1.1.2.2 lukem */ 265 1.1.2.2 lukem stmfd sp!, {r0,r1} /* psr & spsr */ 266 1.1.2.2 lukem stmfd sp!, {lr} /* pc */ 267 1.1.2.2 lukem stmfd sp!, {r0-r14} /* r0-r7, r8-r14 */ 268 1.1.2.2 lukem /* 269 1.1.2.2 lukem * Get previous psr. 270 1.1.2.2 lukem */ 271 1.1.2.2 lukem mrs r7, cpsr_all 272 1.1.2.2 lukem mrs r0, spsr_all 273 1.1.2.2 lukem str r0, [sp, #(16*4)] 274 1.1.2.2 lukem /* 275 1.1.2.2 lukem * Test for user mode. 276 1.1.2.2 lukem */ 277 1.1.2.2 lukem tst r0, #0xf 278 1.1.2.2 lukem bne Lprenotuser_push 279 1.1.2.2 lukem add r1, sp, #(8*4) 280 1.1.2.2 lukem stmia r1,{r8-r14}^ /* store user mode r8-r14*/ 281 1.1.2.2 lukem b Lgoipkdb 282 1.1.2.2 lukem /* 283 1.1.2.2 lukem * Switch to previous mode to get r8-r13. 284 1.1.2.2 lukem */ 285 1.1.2.2 lukem Lprenotuser_push: 286 1.1.2.2 lukem orr r0, r0, #(I32_bit) /* disable interrupts */ 287 1.1.2.2 lukem msr cpsr_all, r0 288 1.1.2.2 lukem mov r1, r8 289 1.1.2.2 lukem mov r2, r9 290 1.1.2.2 lukem mov r3, r10 291 1.1.2.2 lukem mov r4, r11 292 1.1.2.2 lukem mov r5, r12 293 1.1.2.2 lukem mov r6, r13 294 1.1.2.2 lukem msr cpsr_all, r7 /* back to undefined mode */ 295 1.1.2.2 lukem add r8, sp, #(8*4) 296 1.1.2.2 lukem stmia r8, {r1-r6} /* r8-r13 */ 297 1.1.2.2 lukem /* 298 1.1.2.2 lukem * Now back to previous mode to get r14 and spsr. 299 1.1.2.2 lukem */ 300 1.1.2.2 lukem msr cpsr_all, r0 301 1.1.2.2 lukem mov r1, r14 302 1.1.2.2 lukem mrs r2, spsr 303 1.1.2.2 lukem msr cpsr_all, r7 /* back to undefined mode */ 304 1.1.2.2 lukem str r1, [sp, #(14*4)] /* r14 */ 305 1.1.2.2 lukem str r2, [sp, #(17*4)] /* spsr */ 306 1.1.2.2 lukem /* 307 1.1.2.2 lukem * Now to IPKDB. 308 1.1.2.2 lukem */ 309 1.1.2.2 lukem Lgoipkdb: 310 1.1.2.2 lukem mov r0, sp 311 1.1.2.2 lukem bl _C_LABEL(ipkdb_trap_glue) 312 1.1.2.2 lukem ldr r1, Lipkdb_trap_return 313 1.1.2.2 lukem str r0,[r1] 314 1.1.2.2 lukem /* 315 1.1.2.2 lukem * Have to load all registers from the stack. 316 1.1.2.2 lukem * 317 1.1.2.2 lukem * Start with spsr and pc. 318 1.1.2.2 lukem */ 319 1.1.2.2 lukem ldr r0, [sp, #(16*4)] /* spsr */ 320 1.1.2.2 lukem ldr r1, [sp, #(15*4)] /* r15 */ 321 1.1.2.2 lukem msr spsr_all, r0 322 1.1.2.2 lukem mov r14, r1 323 1.1.2.2 lukem /* 324 1.1.2.2 lukem * Test for user mode. 325 1.1.2.2 lukem */ 326 1.1.2.2 lukem tst r0, #0xf 327 1.1.2.2 lukem bne Lprenotuser_pull 328 1.1.2.2 lukem add r1, sp, #(8*4) 329 1.1.2.2 lukem ldmia r1, {r8-r14}^ /* load user mode r8-r14 */ 330 1.1.2.2 lukem b Lpull_r0r7 331 1.1.2.2 lukem Lprenotuser_pull: 332 1.1.2.2 lukem /* 333 1.1.2.2 lukem * Now previous mode spsr and r14. 334 1.1.2.2 lukem */ 335 1.1.2.2 lukem ldr r1, [sp, #(17*4)] /* spsr */ 336 1.1.2.2 lukem ldr r2, [sp, #(14*4)] /* r14 */ 337 1.1.2.2 lukem orr r0, r0, #(I32_bit) 338 1.1.2.2 lukem msr cpsr_all, r0 /* switch to previous mode */ 339 1.1.2.2 lukem msr spsr_all, r1 340 1.1.2.2 lukem mov r14, r2 341 1.1.2.2 lukem msr cpsr_all, r7 /* back to undefined mode */ 342 1.1.2.2 lukem /* 343 1.1.2.2 lukem * Now r8-r13. 344 1.1.2.2 lukem */ 345 1.1.2.2 lukem add r8, sp, #(8*4) 346 1.1.2.2 lukem ldmia r8, {r1-r6} /* r8-r13 */ 347 1.1.2.2 lukem msr cpsr_all, r0 348 1.1.2.2 lukem mov r8, r1 349 1.1.2.2 lukem mov r9, r2 350 1.1.2.2 lukem mov r10, r3 351 1.1.2.2 lukem mov r11, r4 352 1.1.2.2 lukem mov r12, r5 353 1.1.2.2 lukem mov r13, r6 354 1.1.2.2 lukem msr cpsr_all, r7 355 1.1.2.2 lukem Lpull_r0r7: 356 1.1.2.2 lukem /* 357 1.1.2.2 lukem * Now the rest of the registers. 358 1.1.2.2 lukem */ 359 1.1.2.2 lukem ldr r1,Lipkdb_trap_return 360 1.1.2.2 lukem ldr r0,[r1] 361 1.1.2.2 lukem tst r0,r0 362 1.1.2.2 lukem ldmfd sp!, {r0-r7} /* r0-r7 */ 363 1.1.2.2 lukem add sp, sp, #(10*4) /* adjust sp */ 364 1.1.2.2 lukem 365 1.1.2.2 lukem /* 366 1.1.2.2 lukem * Did IPKDB handle it? 367 1.1.2.2 lukem */ 368 1.1.2.2 lukem movnes pc, lr /* return */ 369 1.1.2.2 lukem 370 1.1.2.2 lukem #endif 371 1.1.2.2 lukem stmfd sp!, {r0, r1} 372 1.1.2.2 lukem ldr r0, Lundefined_handler_indirection 373 1.1.2.2 lukem ldr r1, [sp], #0x0004 374 1.1.2.2 lukem str r1, [r0, #0x0000] 375 1.1.2.2 lukem ldr r1, [sp], #0x0004 376 1.1.2.2 lukem str r1, [r0, #0x0004] 377 1.1.2.2 lukem ldmia r0, {r0, r1, pc} 378 1.1.2.2 lukem 379 1.1.2.2 lukem #ifdef IPKDB 380 1.1.2.2 lukem Lipkdb_trap_return: 381 1.1.2.2 lukem .word Lipkdb_trap_return_data 382 1.1.2.2 lukem #endif 383 1.1.2.2 lukem 384 1.1.2.2 lukem Lundefined_handler_indirection: 385 1.1.2.2 lukem .word Lundefined_handler_indirection_data 386 1.1.2.2 lukem 387 1.1.2.2 lukem /* 388 1.1.2.2 lukem * assembly bounce code for calling the kernel 389 1.1.2.2 lukem * undefined instruction handler. This uses 390 1.1.2.2 lukem * a standard trap frame and is called in SVC mode. 391 1.1.2.2 lukem */ 392 1.1.2.2 lukem 393 1.1.2.2 lukem ENTRY_NP(undefinedinstruction_bounce) 394 1.1.2.2 lukem PUSHFRAMEINSVC 395 1.1.2.2 lukem mov r0, sp 396 1.1.2.2 lukem bl _C_LABEL(undefinedinstruction) 397 1.1.2.2 lukem 398 1.1.2.2 lukem b exception_exit 399 1.1.2.2 lukem 400 1.1.2.2 lukem .data 401 1.1.2.2 lukem .align 0 402 1.1.2.2 lukem 403 1.1.2.2 lukem #ifdef IPKDB 404 1.1.2.2 lukem Lipkdb_trap_return_data: 405 1.1.2.2 lukem .word 0 406 1.1.2.2 lukem #endif 407 1.1.2.2 lukem 408 1.1.2.2 lukem /* 409 1.1.2.2 lukem * Indirection data 410 1.1.2.2 lukem * 2 words use for preserving r0 and r1 411 1.1.2.2 lukem * 3rd word contains the undefined handler address. 412 1.1.2.2 lukem */ 413 1.1.2.2 lukem 414 1.1.2.2 lukem Lundefined_handler_indirection_data: 415 1.1.2.2 lukem .word 0 416 1.1.2.2 lukem .word 0 417 1.1.2.2 lukem 418 1.1.2.2 lukem .global _C_LABEL(undefined_handler_address) 419 1.1.2.2 lukem _C_LABEL(undefined_handler_address): 420 1.1.2.2 lukem .word _C_LABEL(undefinedinstruction_bounce) 421
Indexes created Thu Oct 02 14:10:14 GMT 2025