diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index a9cbd8584e..42720d65f9 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -273,6 +273,8 @@ bool riscv_cpu_exec_interrupt(CPUState *cs, int interrupt_request); bool riscv_cpu_fp_enabled(CPURISCVState *env); bool riscv_cpu_virt_enabled(CPURISCVState *env); void riscv_cpu_set_virt_enabled(CPURISCVState *env, bool enable); +bool riscv_cpu_force_hs_excep_enabled(CPURISCVState *env); +void riscv_cpu_set_force_hs_excep(CPURISCVState *env, bool enable); int riscv_cpu_mmu_index(CPURISCVState *env, bool ifetch); hwaddr riscv_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); void riscv_cpu_do_unaligned_access(CPUState *cs, vaddr addr, diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 2cdb0de4fe..ad6479796c 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -432,6 +432,12 @@ /* Virtulisation Register Fields */ #define VIRT_ONOFF 1 +/* This is used to save state for when we take an exception. If this is set + * that means that we want to force a HS level exception (no matter what the + * delegation is set to). This will occur for things such as a second level + * page table fault. + */ +#define FORCE_HS_EXCEP 2 /* RV32 satp CSR field masks */ #define SATP32_MODE 0x80000000 diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index e5311160e7..e36ee7d58e 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -100,6 +100,24 @@ void riscv_cpu_set_virt_enabled(CPURISCVState *env, bool enable) env->virt = set_field(env->virt, VIRT_ONOFF, enable); } +bool riscv_cpu_force_hs_excep_enabled(CPURISCVState *env) +{ + if (!riscv_has_ext(env, RVH)) { + return false; + } + + return get_field(env->virt, FORCE_HS_EXCEP); +} + +void riscv_cpu_set_force_hs_excep(CPURISCVState *env, bool enable) +{ + if (!riscv_has_ext(env, RVH)) { + return; + } + + env->virt = set_field(env->virt, FORCE_HS_EXCEP, enable); +} + int riscv_cpu_claim_interrupts(RISCVCPU *cpu, uint32_t interrupts) { CPURISCVState *env = &cpu->env;