18c2ecf20Sopenharmony_ci# For the pre-R6 code in arch/mips/vdso/vdso.h for locating 28c2ecf20Sopenharmony_ci# the base address of VDSO, the linker will emit a R_MIPS_PC32 38c2ecf20Sopenharmony_ci# relocation in binutils > 2.25 but it will fail with older versions 48c2ecf20Sopenharmony_ci# because that relocation is not supported for that symbol. As a result 58c2ecf20Sopenharmony_ci# of which we are forced to disable the VDSO symbols when building 68c2ecf20Sopenharmony_ci# with < 2.25 binutils on pre-R6 kernels. For more references on why we 78c2ecf20Sopenharmony_ci# can't use other methods to get the base address of VDSO please refer to 88c2ecf20Sopenharmony_ci# the comments on that file. 98c2ecf20Sopenharmony_ci# 108c2ecf20Sopenharmony_ci# GCC (at least up to version 9.2) appears to emit function calls that make use 118c2ecf20Sopenharmony_ci# of the GOT when targeting microMIPS, which we can't use in the VDSO due to 128c2ecf20Sopenharmony_ci# the lack of relocations. As such, we disable the VDSO for microMIPS builds. 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciconfig MIPS_LD_CAN_LINK_VDSO 158c2ecf20Sopenharmony_ci def_bool LD_VERSION >= 225000000 || LD_IS_LLD 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ciconfig MIPS_DISABLE_VDSO 188c2ecf20Sopenharmony_ci def_bool CPU_MICROMIPS || (!CPU_MIPSR6 && !MIPS_LD_CAN_LINK_VDSO) 19