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Using a JTAG in Linux Driver Debugging - page 5 / 48

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04/16/2008 - Copyright © 2008 The PTR Group Inc.

CELF-2008-SVC-5

Device Drivers in Linux

Linux has several driver types

Character, block, network, etc.

Linux uses a formal driver model

Drivers present a common API such as open(), release(), read(), write(), etc.

User-mode device drivers are also possible

Via /dev/mem, /dev/ioports, etc.

Easier to debug using standard GDB

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