Index: sys/arm/arm/locore-v6.S =================================================================== --- sys/arm/arm/locore-v6.S +++ sys/arm/arm/locore-v6.S @@ -76,6 +76,19 @@ mov r10, r2 /* Save meta data */ mov r11, r3 /* Future expansion */ +#if __ARM_ARCH >= 7 + /* Leave HYP mode */ + mrs r0, cpsr + and r0, r0, #(PSR_MODE) /* Mode is in the low 5 bits of CPSR */ + teq r0, #(PSR_HYP32_MODE) /* Hyp Mode? */ + bne no_hyp + adr lr, no_hyp + + MSR_ELR_HYP(14) /* msr elr_hyp, lr */ + ERET /* eret */ +no_hyp: +#endif + /* * Check whether data cache is enabled. If it is, then we know * current tags are valid (not power-on garbage values) and there @@ -398,6 +411,20 @@ #if defined(SMP) ASENTRY_NP(mpentry) + +#if __ARM_ARCH >= 7 + /* Leave HYP mode */ + mrs r0, cpsr + and r0, r0, #(PSR_MODE) /* Mode is in the low 5 bits of CPSR */ + teq r0, #(PSR_HYP32_MODE) /* Hyp Mode? */ + bne no_hyp_mp + adr lr, no_hyp_mp + + MSR_ELR_HYP(14) /* msr elr_hyp, lr */ + ERET /* eret */ +no_hyp_mp: +#endif + /* Make sure interrupts are disabled. */ cpsid ifa Index: sys/arm/include/asm.h =================================================================== --- sys/arm/include/asm.h +++ sys/arm/include/asm.h @@ -228,6 +228,14 @@ #define DSB dsb #define DMB dmb #define WFI wfi +/* WORKAROUND: + * This is temporary workaround. Current clang version does + * not support these instructions. Use hardcoded values + * until llvm-3.6 is integrated into FreeBSD. + */ +#define MSR_ELR_HYP(regnum) .word (0xe12ef300 | regnum) +#define ERET .word 0xe160006e +/* WORKAROUND END */ #elif __ARM_ARCH == 6 #define ISB mcr CP15_CP15ISB #define DSB mcr CP15_CP15DSB