Abstract
This chapter covers the ARM architecture, ARM instructions, ARM programming and development of programs for execution on ARM virtual machines. These include ARM processor modes, register banks in different modes, instructions and basic programming in ARM assembly. It introduces the ARM toolchain under Ubuntu (15.10) Linux and emulated ARM virtual machines under QEMU. It shows how to use the ARM toolchain to develop programs for execution on the ARM Versatilepb virtual machine by a series of programming examples. It explains the function call convention in C and shows how to interface assembly code with C programs. Then it develops a simple UART driver for I/O on serial ports, and a LCD driver for displaying both graphic images and text. It also shows the implementation of a generic printf() function for formatted printing to output devices that support the basic print char operation.
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References
ARM Architectures: http://www.arm.products/processors/instruction-set-architectures, ARM Information Center, 2016
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Wang, K.C. (2017). ARM Architecture and Programming. In: Embedded and Real-Time Operating Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-51517-5_2
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DOI: https://doi.org/10.1007/978-3-319-51517-5_2
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Publisher Name: Springer, Cham
Print ISBN: 978-3-319-51516-8
Online ISBN: 978-3-319-51517-5
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