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#include <fbos/mm.h>
SECTIONS {
// Ensure that the image starts at the very exact address SBI expects it to.
. = LINK_ADDR;
// You would usually want to separate the head section into its own thing
// instead of clumping it into the main `.text` one. Well, I'm no expert on
// linker configuration, so patches are welcome :)
.text : {
// The very first thing has to be the `_start` function, which is where
// SBI will jump into. Afterwards comes the rest of `.text.head`.
_start = .;
*(.text.head)
// Aligning it to a full page is maybe a bit too much considering how
// small `.text.head` really is. I just saw this same thing on the Linux
// Kernel and it felt clean.
. = ALIGN(PAGE_SIZE);
// From now on the rest of the `.text` could just be a continuation, but
// I further split it into `.text.kernel` so the jump from head isn't
// that large. That is, we put first the very core of the kernel, and
// the rest can go wherever.
__kernel_text_start = .;
*(.text.kernel)
__kernel_text_end = .;
// And the rest.
*(.text)
}
// In total we would reserve two full blown pages for the kernel code, which
// is definitely too much, but whatever, memory is cheap.
. = ALIGN(PAGE_SIZE);
.data : {
*(.data)
}
. = ALIGN(8);
.rodata : {
*(.rodata)
}
. = ALIGN(8);
.bss : {
*(.bss)
}
}
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