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32 /*****************************************************************************/
36 * This file contains the initial vector table for the Cortex R5 processor
39 * MODIFICATION HISTORY:
41 * Ver Who Date Changes
42 * ----- ------- -------- ---------------------------------------------------
43 * 5.00 pkp 02/10/14 Initial version
44 * 6.0 mus 27/07/16 Added UndefinedException handler
45 * 6.3 pkp 02/13/17 Added support for hard float
52 ******************************************************************************/
62 .globl DataAbortInterrupt
63 .globl PrefetchAbortInterrupt
68 .section .vectors, "a"
73 ldr pc,=PrefetchAbortHandler
74 ldr pc,=DataAbortHandler
75 NOP /* Placeholder for address exception vector*/
80 IRQHandler: /* IRQ vector handler */
81 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code*/
84 vpush {d0-d7} /* Store floating point registers */
90 bl IRQInterrupt /* IRQ vector */
93 pop {r1} /* Restore floating point registers */
99 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
100 subs pc, lr, #4 /* adjust return */
101 FIQHandler: /* FIQ vector handler */
102 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
104 bl FIQInterrupt /* FIQ vector */
105 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
106 subs pc, lr, #4 /* adjust return */
108 Undefined: /* Undefined handler */
109 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
110 ldr r0, =UndefinedExceptionAddr
112 str r1, [r0] /* Store address of instruction causing undefined exception */
114 bl UndefinedException /* UndefinedException: call C function here */
115 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
118 SVCHandler: /* SWI handler */
119 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
120 tst r0, #0x20 /* check the T bit */
121 ldrneh r0, [lr,#-2] /* Thumb mode */
122 bicne r0, r0, #0xff00 /* Thumb mode */
123 ldreq r0, [lr,#-4] /* ARM mode */
124 biceq r0, r0, #0xff000000 /* ARM mode */
125 bl SWInterrupt /* SWInterrupt: call C function here */
126 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
127 movs pc, lr /* adjust return */
129 DataAbortHandler: /* Data Abort handler */
130 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
131 ldr r0, =DataAbortAddr
133 str r1, [r0] /* Stores instruction causing data abort */
134 bl DataAbortInterrupt /*DataAbortInterrupt :call C function here */
135 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
136 subs pc, lr, #8 /* adjust return */
138 PrefetchAbortHandler: /* Prefetch Abort handler */
139 stmdb sp!,{r0-r3,r12,lr} /* state save from compiled code */
140 ldr r0, =PrefetchAbortAddr
142 str r1, [r0] /* Stores instruction causing prefetch abort */
143 bl PrefetchAbortInterrupt /* PrefetchAbortInterrupt: call C function here */
144 ldmia sp!,{r0-r3,r12,lr} /* state restore from compiled code */
145 subs pc, lr, #4 /* adjust return */