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31 ******************************************************************************/
32 /*****************************************************************************/
36 * This file contains the initial vector table for the Cortex A9 processor
39 * MODIFICATION HISTORY:
41 * Ver Who Date Changes
42 * ----- ------- -------- ---------------------------------------------------
43 * 1.00a ecm/sdm 10/20/09 Initial version
44 * 3.05a sdm 02/02/12 Save lr when profiling is enabled
45 * 3.10a srt 04/18/13 Implemented ARM Erratas. Please refer to file
46 * 'xil_errata.h' for errata description
47 * 4.00a pkp 22/01/14 Modified return addresses for interrupt
48 * handlers (DataAbortHandler and SVCHandler)
56 ******************************************************************************/
57 #include "xil_errata.h"
59 #define __ARM_NEON__ 1
70 .globl DataAbortInterrupt
71 .globl PrefetchAbortInterrupt
81 B PrefetchAbortHandler
83 NOP /* Placeholder for address exception vector*/
88 IRQHandler: /* IRQ vector handler */
90 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code*/
106 bl IRQInterrupt /* IRQ vector */
116 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
119 subs pc, lr, #4 /* adjust return */
122 FIQHandler: /* FIQ vector handler */
123 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
134 bl FIQInterrupt /* FIQ vector */
144 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
145 subs pc, lr, #4 /* adjust return */
148 Undefined: /* Undefined handler */
149 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
151 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
158 SVCHandler: /* SWI handler */
159 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
161 tst r0, #0x20 /* check the T bit */
162 ldrneh r0, [lr,#-2] /* Thumb mode */
163 bicne r0, r0, #0xff00 /* Thumb mode */
164 ldreq r0, [lr,#-4] /* ARM mode */
165 biceq r0, r0, #0xff000000 /* ARM mode */
167 bl SWInterrupt /* SWInterrupt: call C function here */
169 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
171 movs pc, lr /*return to the next instruction after the SWI instruction */
174 DataAbortHandler: /* Data Abort handler */
175 #ifdef CONFIG_ARM_ERRATA_775420
178 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
180 bl DataAbortInterrupt /*DataAbortInterrupt :call C function here */
182 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
184 subs pc, lr, #8 /* points to the instruction that caused the Data Abort exception */
186 PrefetchAbortHandler: /* Prefetch Abort handler */
187 #ifdef CONFIG_ARM_ERRATA_775420
190 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
192 bl PrefetchAbortInterrupt /* PrefetchAbortInterrupt: call C function here */
194 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
196 subs pc, lr, #4 /* points to the instruction that caused the Prefetch Abort exception */