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Move the entire kernel into its own directory. Create new directories
for system commands, libraries and other required essentials for a
complete Unix-like operating system.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Create a generic interface for drivers to make use of interrupt vectors.
This API should be platform-agnostic enough to allow any driver to make
use of virtually any interrupt vector on any CPU. On x86, the first 32
interrupts are set aside for CPU exceptions, and interrupt 128 is set
aside for system calls.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Map the page directory to the last page table. This allows the kernel to
access every page table on the system from the address 0xFFC00000 plus
an offset.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Make the declaration of flush_gdt available to files including asm.h.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add two functions to control thread-local spinlocks.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Add the mostly finished physical memory allocator and expose its
functions to the paging system.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Clean up everything in the i386 arch directory. This code has been in
dire need of refactoring for a long while. All the inline assembly
functions and the data structures related to the architecture should be
placed into their own header file. Now the scheduler can access
registers and ISRs without having to deal with arch-specific code.
Signed-off-by: Danny Holman <dholman@gymli.org>
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Move simple assembly calls to their own header. All one or two line
assembly calls should be defined in a single place.
Signed-off-by: Danny Holman <dholman@gymli.org>
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