Dear expert,
I have a hardware reset vector rstvectors and an os exeption vector LOW_EXCEPTION_0 as follow, assiged to the SARM and ATCM respectively. Now I sucess to use the rstvectors to start up the system. But I want to use the LOW_EXCEPTION_0 to process exeprions then. How should i do? Thanks.
.sect ".rstvectors"
_resetvectors:
.asmfunc
LDR pc, c_int00_addr ; Reset
LDR pc, undefInst_addr ; Undefined Instruction
LDR pc, swi_addr ; Software interrupt
LDR pc, preAbort_addr ; Abort (prefetch)
LDR pc, dataAbort_addr ; Abort (data)
LDR pc, rsvd_addr ; rsvd
LDR pc, irq_addr ; IRQ
LDR pc, fiq_addr ; FIQ
.endasmfunc
static volatile uint32 __attribute__((section(".LOW_EXCEPTION_0")))
Os_ExceptionHandlerFunction_0 [] =
{
&Os_UndefinedInstructionException,
&Os_PrefetchAbortException,
&Os_DataAbortException,
&Os_IrqException,
&Os_FiqException,
};
/* Memory Map */
MEMORY
{
ATCM (RWX) : origin=0x00000000 length=0x800 /* ATCM R5 */
BOOT_SPACE (RWX) : origin=0x70010000 length=0x100 /*256 SRAM*/
/**BOOT_SPACE (RWX) : origin=0x41CE3000 length=0x100**/
STARTUP_CODE (RWX) : origin=0x70010100 length=0x1000 /* 4K SRAM */
RAM (RWX) : origin=0x70011100 length=0x200000 /* 2M SRAM */
ROM (RWX) : origin=0x70211100 length=0x200000 /* 2M SRAM */
PERIPHERAL_SPACE (RW) : origin=0x2000000 length=0x10000 /* 64 KB I2C */
}
SECTIONS
{
/*
Exception vectors and Startup code will be covered by
background region with default memory attributes i.e.
accessible in PL1
*/
.OS_EXCEPTION_VECTORS : { *(.rstvectors) } palign(4) > BOOT_SPACE
.OS_EXCEPTIONS : { *(.LOW_EXCEPTION_0) } palign(4) > ATCM
