On Fri, 2024-01-05 at 11:40 +0800, Lulu Cheng wrote:
> bool
> loongarch_explicit_relocs_p (enum loongarch_symbol_type type)
> {
> + /* Instructions pcalau12i, addi.d, lu32i.d and lu52i.d must be adjancent
> + so that the linker can infer the PC of pcalau12i to apply relocations
> + to lu32i.d and lu52i.d. Otherwise, the results would be incorrect if
> + these four instructions are not in the same 4KiB page.
> + Therefore, macro instructions are used when cmodel=extreme. */
> + if (loongarch_symbol_extreme_p (type))
> + return false;
I think this is a bit of strange. With -mexplicit-relocs={auto,always}
we should still use explicit relocs, but coding all 4 instructions
altogether as
"pcalau12i.d\t%1,%pc64_hi12(%2)\n\taddi.d\t%0,$r0,%pclo12(%2)\n\tlu32i.d\t%0,%pc64_lo20(%2)\n\tlu52i.d\t%0,%0,%pc64_hi12(%2)"
Give me several hours trying to implement this...
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
