Invalid relocation type 282 for AOT on aarch64

[robinvanemden]

On compiling to WASM using

WASM_FLAGS = --sysroot=${WASM_SYSROOT} -O3 -fno-exceptions -mbulk-memory -m32 -fno-rtti -ffast-math -fno-math-errno

and then compiling AOT with either wamrc_v0 (May 2021) and wamrc_v1 (current version, 12/5/2021)

wamrc_v0 --target=aarch64 --enable-bulk-memory -o model.aarch64_0.aot mode.wasm
wamrc_v1 --target=aarch64                      -o model.aarch64_1.aot model.wasm

we receive the following error when running the model.aarch64_1 compiled by the current wamrc_v1 version with a up to date WAMR application

Error: Load wasm runtime_core.module failed. error: Load relocation section failed: invalid relocation type 282.

The older wamrc_v0 generated model.aarch64_0.aot does not generate this error when it is run. Nor does compiling AOT for targets x64 and armv7 with either wamrc_v0 (May 2021) or wamrc_v1 (current version, 12/5/2021).

[wenyongh]

@robinvanemden relocation type 282 is R_AARCH64_JUMP26, the relocation for it should be same as for R_AARCH64_CALL26, could you please try whether patch #873 works?

[robinvanemden]

@wenyongh yes, patch #873 resolves this issue. Thanks!

[Jiax-cn]

@wenyongh I encountered a similar issue: Load relocation section failed: invalid relocation type 261. Is there any plan to support this relocation type? Thank you very much!

[lum1n0us]

To my knowledge, there isn't a plan in place for data relocation(including R_AARCH64_ABSxxx and R_AARCH64_PRELxxx) as seen in the Linux source (https://elixir.bootlin.com/linux/v4.9.12/source/arch/arm64/kernel/module.c#L232). However, you are welcome to contribute to this area.

[yamt]

@wenyongh I encountered a similar issue: Load relocation section failed: invalid relocation type 261. Is there any plan to support this relocation type? Thank you very much!

i guess you can file a new bug with a recipe to reproduce.