Rel2 #232
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Rel2 #232
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This patch uses --emit-relocs to provide the relocations, and then looks for R_386_16+RELC symbols.
We used to have DOS_PSP=cs, but now we have ELF headers in DOS space. And as we use tiny model, cs:0 inevitably points to them. To not overwrite them with PSP, move DOS_PSP var to kernel.asm and initialize it with PGROUP. This patch makes PGROUP no longer equal to other segments, so this needs a proper segelf support. This can't be done in a master branch where we relocate by a hard-coded value only (0x60). So this patch shows a clear advantage of the segelf scheme usage. Note that even the part of this patch, eg aligning PSP section to 0x100, cannot be back-ported to master because there we store PSP at cs:0 regardless of the linker script, and overwrite whatever is there. And there are the ELF headers now, since commit 95432f8. Which probably shouldn't have been back-ported to master as a start.
As we now support arbitrary load offsets, load to DOS starting from .ptext section, rather than from what PT_LOAD says to load.
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I disabled the arm64 build |
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segelf relocations support.