Bug 215821 for TARGET_ARCH=powerpc64: bootstrapped ld produces a "shared object" when given a -pie option; junk kernel produced crashes

[Mark Millard]

I have submitted a FreeBSD bugzilla entry:

Bug 215821 - head -r311147's bootstrapped ld for TARGET_ARCH=powerpc64 produces kernel.full as a "shared object" for -pie instead of as a "executable": booting the produced kernel crashes

In essence what the .meta file for kernel.full shows as:

CMD @ld -Bdynamic -T /usr/src/sys/conf/ldscript.powerpc64 -pie --no-warn-mismatch  --warn-common --export-dynamic --dynamic-linker /red/herring  -o kernel.full -X locore.o . . .

(note the -pie) ends up producing:

ELF 64-bit MSB shared object, 64-bit PowerPC or cisco 7500, version 1 (FreeBSD), dynamically linked, interpreter /red/herring, not stripped

instead of what it should have produced:

ELF 64-bit MSB executable, 64-bit PowerPC or cisco 7500, version 1 (FreeBSD), dynamically linked, interpreter /red/herring, not stripped

The differences in content leads to the powerpc64 crashing at the start of the produced kernel.

This means needing to use devel/binutils and/or devel/powerpc64-binutils instead (at least for ld).

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Mark Millard
markmi at dsl-only.net