llext: Introduce AARCH64 relocation support

Adds support for all relocation type produced by GCC
on AARCH64 platform using partial linking (-r flag) or
shared link (-fpic and -shared flag).

Signed-off-by: Adam Wojasinski <[email protected]>

Author: awojasinski

arch/arm64/core/CMakeLists.txt

@@ -29,6 +29,7 @@ if(${SRAM_LENGTH} GREATER 11 OR ${KERNEL_VM_LENGTH} GREATER 11)
   zephyr_cc_option(-mcmodel=large)
 endif()
 
+zephyr_library_sources_ifdef(CONFIG_LLEXT elf.c)
 zephyr_library_sources_ifdef(CONFIG_FPU_SHARING fpu.c fpu.S)
 zephyr_library_sources_ifdef(CONFIG_ARM_MMU mmu.c mmu.S)
 zephyr_library_sources_ifdef(CONFIG_ARM_MPU cortex_r/arm_mpu.c)