diff options
Diffstat (limited to 'target/riscv/internals.h')
| -rw-r--r-- | target/riscv/internals.h | 69 |
1 files changed, 68 insertions, 1 deletions
diff --git a/target/riscv/internals.h b/target/riscv/internals.h index 0ac17bc..4570bd5 100644 --- a/target/riscv/internals.h +++ b/target/riscv/internals.h @@ -19,7 +19,10 @@ #ifndef RISCV_CPU_INTERNALS_H #define RISCV_CPU_INTERNALS_H +#include "exec/cpu-common.h" #include "hw/registerfields.h" +#include "fpu/softfloat-types.h" +#include "target/riscv/cpu_bits.h" /* * The current MMU Modes are: @@ -30,12 +33,15 @@ * - U+2STAGE 0b100 * - S+2STAGE 0b101 * - S+SUM+2STAGE 0b110 + * - Shadow stack+U 0b1000 + * - Shadow stack+S 0b1001 */ #define MMUIdx_U 0 #define MMUIdx_S 1 #define MMUIdx_S_SUM 2 #define MMUIdx_M 3 #define MMU_2STAGE_BIT (1 << 2) +#define MMU_IDX_SS_WRITE (1 << 3) static inline int mmuidx_priv(int mmu_idx) { @@ -136,7 +142,68 @@ static inline float16 check_nanbox_h(CPURISCVState *env, uint64_t f) } } -/* Our implementation of CPUClass::has_work */ +#ifndef CONFIG_USER_ONLY +/* Our implementation of SysemuCPUOps::has_work */ bool riscv_cpu_has_work(CPUState *cs); +#endif + +/* Zjpm addr masking routine */ +static inline target_ulong adjust_addr_body(CPURISCVState *env, + target_ulong addr, + bool is_virt_addr) +{ + RISCVPmPmm pmm = PMM_FIELD_DISABLED; + uint32_t pmlen = 0; + bool signext = false; + + /* do nothing for rv32 mode */ + if (riscv_cpu_mxl(env) == MXL_RV32) { + return addr; + } + + /* get pmm field depending on whether addr is */ + if (is_virt_addr) { + pmm = riscv_pm_get_virt_pmm(env); + } else { + pmm = riscv_pm_get_pmm(env); + } + + /* if pointer masking is disabled, return original addr */ + if (pmm == PMM_FIELD_DISABLED) { + return addr; + } + + if (!is_virt_addr) { + signext = riscv_cpu_virt_mem_enabled(env); + } + addr = addr << pmlen; + pmlen = riscv_pm_get_pmlen(pmm); + + /* sign/zero extend masked address by N-1 bit */ + if (signext) { + addr = (target_long)addr >> pmlen; + } else { + addr = addr >> pmlen; + } + + return addr; +} + +static inline target_ulong adjust_addr(CPURISCVState *env, + target_ulong addr) +{ + return adjust_addr_body(env, addr, false); +} + +static inline target_ulong adjust_addr_virt(CPURISCVState *env, + target_ulong addr) +{ + return adjust_addr_body(env, addr, true); +} + +static inline int insn_len(uint16_t first_word) +{ + return (first_word & 3) == 3 ? 4 : 2; +} #endif |