29 lines
1.0 KiB
Plaintext
29 lines
1.0 KiB
Plaintext
arch/x86/include/README.txt
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^^^^^^^^^^^^^^^^^^^^^^^^^^^
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This directory holds x86-specific header files. The top-level header files in
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arch/x86/include simply include corresponding header files from lower lower-
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level chip-specific and architecture-specific directories.
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Architecture-Specific Directories
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Architecture-specific directories hold common header files for specific x86
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architectures. Separating these header file makes it easy to manage such
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things as differences in sizeof(long) on 32- and 64-bit x86 architectures.
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i486
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This directory holds definitions appropriate for any instantiation of the
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32-bit i486 architecture.
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Chip-Specific directories
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^^^^^^^^^^^^^^^^^^^^^^^^^
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The same x86 architecture may be realized in different chip implementations.
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For SoC chips, in particular, on-chip devices and differing interrupt
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structures may require special, chip-specific definitions in these chip-
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specific directories.
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qemu
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This is the implementation of NuttX on the QEMU x86 simulation.
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