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Fix the i386's general exception handler to actually work. Fix provided
by Jon Sanderson (jjs295356@gmail.com).
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Fix a bug in which the size of the main GDT array and the actual number
of descriptors are different values.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Add support for the 8259 programmable interrupt controller.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Create files that add IDT support for i386.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Add two ring-3 segment discriptors to the GDT during gdt_install.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Add parenthesis around the GDT setup macros. This is done to prevent
having to do it when using them.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Add a set of routines that setup the x86's global descriptor table.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Move the start of the kernel image to the "higher half" of memory. This
also enables paging.
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Add support for scrolling the terminal at the end of the VGA buffer.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Add support for the newline character in the TTY layer.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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Add structure to the internals of the x86 directory.
Signed-off-by: Danny Holman <dholman@gymli.xyz>
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