By Iggy Krajci, Darren Cummings
Android on x86: an advent to Optimizing for Intel® structure serves major reasons. First, it makes the case for adapting your functions onto Intel’s x86 structure, together with discussions of the enterprise capability, the altering panorama of the Android market, and the original demanding situations and possibilities that come up from x86 units. the basic inspiration is that extending your purposes to aid x86 or growing new ones isn't tough, however it is vital to grasp the entire technicalities. This booklet is devoted to supplying you with an know-how of those nuances and an figuring out of ways to take on them.
Second, and most significantly, this booklet offers a one-stop targeted source for top practices and methods linked to the install concerns, optimization matters, software program requisites, programming projects, and function optimizations that emerge whilst builders think of the x86 Android units. Optimization discussions dive into local code, acceleration, and complicated profiling of multimedia functions. The authors have amassed this data for you to use the e-book as a consultant for the categorical necessities of every program project.
This e-book isn't really committed completely to code; as an alternative it truly is jam-packed with the knowledge you would like with a purpose to reap the benefits of x86 structure. it is going to consultant you thru fitting the Android SDK for Intel structure, assist you comprehend the variations and similarities among processor architectures to be had in Android units, educate you to create and port purposes, debug latest x86 purposes, supply options for NDK and C++ optimizations, and introduce the Intel sped up Execution supervisor. This publication presents the main invaluable info that can assist you get the activity performed quick whereas using top practices.
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Extra info for Android on x86: An Introduction to Optimizing for Intel® Architecture
For ARM, all the instructions are conditionally executed to reduce branch overhead and mis-prediction during branching. There are condition flags that each instruction needs to fulfill in order to take effect, otherwise the instruction will act as NOP and get discarded. There are conditional instructions as well in Intel architecture; these are called conditional MOV instructions. Other instructions in IA32 are not conditionally executed. 42 CHAPTER 5 ■ The Intel Mobile Processor Multi-Core/Thread Support As mentioned previously, Saltwell supports Intel Hyper-Threading Technology (Intel HT Technology), where tasks are completed by using shared resources.
Table 5-5. High-Level Differences Between Saltwell and ARM (Cortex A15) Feature Saltwell ARM Cortex Technology 32nm 28nm Architecture In-order Out-of-order Integer pipelines 16 15 L1 cache 64KB Configurable up 64KB L2 cache 512KB Max 4MB Instruction set IA32, Intel Streaming SIMD Extensions, Intel ARM, Thumb Supplemental Streaming SIMD Extensions 3 Multi core/thread Single core with Intel Hyper-Threading support Technology Multi-core Security technology TrustZone* Technology 1 Intel Smart & Secure Technology (Intel S&ST) atassa, Lori and Max Domeika, Break Away with Intel® Atom™ Processors: A Guide to Architecture M Migration.
5 billion dollars. The original x86 architecture has split, diversified, added new specifications, and been reshaped into smaller form factors, continuing to be used in products around the world. The incorporation of Android on x86 is just another step forward for Intel. Because the x86 architecture has been used in so many technologies, from servers to personal computers, mobile phones, laptops, and tablets, compiling a complete list of its devices would be prohibitively difficult. Its wide use has resulted in the creation of tools, applications, frameworks, and libraries specific to x86 platforms for developer use.
Android on x86: An Introduction to Optimizing for Intel® Architecture by Iggy Krajci, Darren Cummings