Hi ppl,
Am a newbie to u-boot as well as arm assembly.
wanted to know about the startup code. Below is the
vector table pasted from the code. What i dont
understand is why only the reset vector is PC relative
and all others have memory allocated to hold the
addresses. I mean all other vectors also could be
branch instructions.Any reason ?
.globl _start
_start: b reset
ldr pc, _undefined_instruction
ldr pc, _software_interrupt
ldr pc, _prefetch_abort
ldr pc, _data_abort
ldr pc, _not_used
ldr pc, _irq
ldr pc, _fiq
_undefined_instruction: .word undefined_instruction
_software_interrupt: .word software_interrupt
_prefetch_abort: .word prefetch_abort
_data_abort: .word data_abort
_not_used: .word not_used
_irq: .word irq
_fiq: .word fiq
.balignl 16,0xdeadbeef
Thanks and Regards,
Srinivas Bakki
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