diff options
Diffstat (limited to 'target-i386/cpu.h')
| -rw-r--r-- | target-i386/cpu.h | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index cea8ecc3fb..7d7ad33441 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -1010,6 +1010,16 @@ static inline int cpu_mmu_index (CPUX86State *env) #define CC_DST (env->cc_dst) #define CC_OP (env->cc_op) +/* n must be a constant to be efficient */ +static inline target_long lshift(target_long x, int n) +{ + if (n >= 0) { + return x << n; + } else { + return x >> (-n); + } +} + /* float macros */ #define FT0 (env->ft0) #define ST0 (env->fpregs[env->fpstt].d) @@ -1078,6 +1088,39 @@ void QEMU_NORETURN raise_exception_err(CPUX86State *env, int exception_index, void QEMU_NORETURN raise_interrupt(CPUX86State *nenv, int intno, int is_int, int error_code, int next_eip_addend); +/* cc_helper.c */ +extern const uint8_t parity_table[256]; +uint32_t cpu_cc_compute_all(CPUX86State *env1, int op); + +static inline uint32_t cpu_compute_eflags(CPUX86State *env) +{ + return env->eflags | cpu_cc_compute_all(env, CC_OP) | (DF & DF_MASK); +} + +/* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */ +static inline void cpu_load_eflags(CPUX86State *env, int eflags, + int update_mask) +{ + CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + DF = 1 - (2 * ((eflags >> 10) & 1)); + env->eflags = (env->eflags & ~update_mask) | + (eflags & update_mask) | 0x2; +} + +/* load efer and update the corresponding hflags. XXX: do consistency + checks with cpuid bits? */ +static inline void cpu_load_efer(CPUX86State *env, uint64_t val) +{ + env->efer = val; + env->hflags &= ~(HF_LMA_MASK | HF_SVME_MASK); + if (env->efer & MSR_EFER_LMA) { + env->hflags |= HF_LMA_MASK; + } + if (env->efer & MSR_EFER_SVME) { + env->hflags |= HF_SVME_MASK; + } +} + /* op_helper.c */ void do_interrupt(CPUX86State *env); void do_interrupt_x86_hardirq(CPUX86State *env, int intno, int is_hw); @@ -1088,8 +1131,6 @@ void cpu_svm_check_intercept_param(CPUX86State *env1, uint32_t type, uint64_t param); void cpu_vmexit(CPUX86State *nenv, uint32_t exit_code, uint64_t exit_info_1); -uint32_t cpu_cc_compute_all(CPUX86State *env1, int op); - void cpu_report_tpr_access(CPUX86State *env, TPRAccess access); #endif /* CPU_I386_H */ |