diff options
Diffstat (limited to 'arch/mips/loongson64/Platform')
| -rw-r--r-- | arch/mips/loongson64/Platform | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/mips/loongson64/Platform b/arch/mips/loongson64/Platform index 2e48e83d5524..85d808924c94 100644 --- a/arch/mips/loongson64/Platform +++ b/arch/mips/loongson64/Platform @@ -22,6 +22,27 @@ ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS endif endif +cflags-$(CONFIG_CPU_LOONGSON3) += -Wa,--trap +# +# binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a +# as MIPS64 R2; older versions as just R1. This leaves the possibility open +# that GCC might generate R2 code for -march=loongson3a which then is rejected +# by GAS. The cc-option can't probe for this behaviour so -march=loongson3a +# can't easily be used safely within the kbuild framework. +# +ifeq ($(call cc-ifversion, -ge, 0409, y), y) + ifeq ($(call ld-ifversion, -ge, 22500000, y), y) + cflags-$(CONFIG_CPU_LOONGSON3) += \ + $(call cc-option,-march=loongson3a -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) + else + cflags-$(CONFIG_CPU_LOONGSON3) += \ + $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) + endif +else + cflags-$(CONFIG_CPU_LOONGSON3) += \ + $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) +endif + # # Loongson Machines' Support # |