diff --git a/qemu/header_gen.py b/qemu/header_gen.py index 1d1f6ace..48007f5f 100644 --- a/qemu/header_gen.py +++ b/qemu/header_gen.py @@ -5565,12 +5565,14 @@ riscv_symbols = ( 'riscv_cpu_do_interrupt', 'riscv_cpu_do_unaligned_access', 'riscv_cpu_exec_interrupt', + 'riscv_cpu_force_hs_excep_enabled', 'riscv_cpu_get_fflags', 'riscv_cpu_get_phys_page_debug', 'riscv_cpu_list', 'riscv_cpu_mmu_index', 'riscv_cpu_register_types', 'riscv_cpu_set_fflags', + 'riscv_cpu_set_force_hs_excep', 'riscv_cpu_set_mode', 'riscv_cpu_set_virt_enabled', 'riscv_cpu_tlb_fill', diff --git a/qemu/target/riscv/cpu.h b/qemu/target/riscv/cpu.h index 0cce5c32..8d4bd0ca 100644 --- a/qemu/target/riscv/cpu.h +++ b/qemu/target/riscv/cpu.h @@ -276,6 +276,8 @@ int riscv_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); bool riscv_cpu_exec_interrupt(CPUState *cs, int interrupt_request); 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/qemu/target/riscv/cpu_bits.h b/qemu/target/riscv/cpu_bits.h index f3b5697d..27cbadc5 100644 --- a/qemu/target/riscv/cpu_bits.h +++ b/qemu/target/riscv/cpu_bits.h @@ -433,6 +433,13 @@ /* 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/qemu/target/riscv/cpu_helper.c b/qemu/target/riscv/cpu_helper.c index 6191f022..d98cef8e 100644 --- a/qemu/target/riscv/cpu_helper.c +++ b/qemu/target/riscv/cpu_helper.c @@ -90,6 +90,24 @@ 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;