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IRQ_CONNECT_STATIC() macro provides static interrupt registration. It creates an entry for _sw_isr_table, table of interrupt handlers. IRQ_CONFIG() macro provides interrupt controller configuration. On ARM platform it configures the priority of each interrupt. _sw_isr_table is implemented the way that each of it's elements is located in individual section. Sections are marked a "linkonce", thus when a device driver declares an interrupt handler, it overwrites the default _sw_isr_table entry. Change-Id: I182bf7158dd67f45b597783dca038a4f78166a03 Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com> |
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