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40 ******************************************************************************/
41 /*****************************************************************************/
45 * This file contains the initial vector table for the Cortex A9 processor
48 * MODIFICATION HISTORY:
50 * Ver Who Date Changes
51 * ----- ------- -------- ---------------------------------------------------
52 * 1.00a ecm/sdm 10/20/09 Initial version
53 * 3.05a sdm 02/02/12 Save lr when profiling is enabled
54 * 3.10a srt 04/18/13 Implemented ARM Erratas. Please refer to file
55 * 'xil_errata.h' for errata description
56 * 4.00a pkp 22/01/14 Modified return addresses for interrupt
57 * handlers (DataAbortHandler and SVCHandler)
65 ******************************************************************************/
66 #include "xil_errata.h"
68 #define __ARM_NEON__ 1
79 .globl DataAbortInterrupt
80 .globl PrefetchAbortInterrupt
90 B PrefetchAbortHandler
92 NOP /* Placeholder for address exception vector*/
97 IRQHandler: /* IRQ vector handler */
99 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code*/
115 bl IRQInterrupt /* IRQ vector */
125 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
128 subs pc, lr, #4 /* adjust return */
131 FIQHandler: /* FIQ vector handler */
132 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
143 bl FIQInterrupt /* FIQ vector */
153 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
154 subs pc, lr, #4 /* adjust return */
157 Undefined: /* Undefined handler */
158 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
160 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
167 SVCHandler: /* SWI handler */
168 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
170 tst r0, #0x20 /* check the T bit */
171 ldrneh r0, [lr,#-2] /* Thumb mode */
172 bicne r0, r0, #0xff00 /* Thumb mode */
173 ldreq r0, [lr,#-4] /* ARM mode */
174 biceq r0, r0, #0xff000000 /* ARM mode */
176 bl SWInterrupt /* SWInterrupt: call C function here */
178 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
180 movs pc, lr /*return to the next instruction after the SWI instruction */
183 DataAbortHandler: /* Data Abort handler */
184 #ifdef CONFIG_ARM_ERRATA_775420
187 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
189 bl DataAbortInterrupt /*DataAbortInterrupt :call C function here */
191 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
193 subs pc, lr, #8 /* points to the instruction that caused the Data Abort exception */
195 PrefetchAbortHandler: /* Prefetch Abort handler */
196 #ifdef CONFIG_ARM_ERRATA_775420
199 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
201 bl PrefetchAbortInterrupt /* PrefetchAbortInterrupt: call C function here */
203 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
205 subs pc, lr, #4 /* points to the instruction that caused the Prefetch Abort exception */