diff options
Diffstat (limited to 'target-arm/cpu.h')
| -rw-r--r-- | target-arm/cpu.h | 138 |
1 files changed, 136 insertions, 2 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index d1e1ccb..65a3417 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -51,6 +51,11 @@ #define EXCP_EXCEPTION_EXIT 8 /* Return from v7M exception. */ #define EXCP_KERNEL_TRAP 9 /* Jumped to kernel code page. */ #define EXCP_STREX 10 +#define EXCP_HVC 11 /* HyperVisor Call */ +#define EXCP_HYP_TRAP 12 +#define EXCP_SMC 13 /* Secure Monitor Call */ +#define EXCP_VIRQ 14 +#define EXCP_VFIQ 15 #define ARMV7M_EXCP_RESET 1 #define ARMV7M_EXCP_NMI 2 @@ -65,6 +70,8 @@ /* ARM-specific interrupt pending bits. */ #define CPU_INTERRUPT_FIQ CPU_INTERRUPT_TGT_EXT_1 +#define CPU_INTERRUPT_VIRQ CPU_INTERRUPT_TGT_EXT_2 +#define CPU_INTERRUPT_VFIQ CPU_INTERRUPT_TGT_EXT_3 /* The usual mapping for an AArch64 system register to its AArch32 * counterpart is for the 32 bit world to have access to the lower @@ -80,9 +87,11 @@ #define offsetofhigh32(S, M) (offsetof(S, M) + sizeof(uint32_t)) #endif -/* Meanings of the ARMCPU object's two inbound GPIO lines */ +/* Meanings of the ARMCPU object's four inbound GPIO lines */ #define ARM_CPU_IRQ 0 #define ARM_CPU_FIQ 1 +#define ARM_CPU_VIRQ 2 +#define ARM_CPU_VFIQ 3 typedef void ARMWriteCPFunc(void *opaque, int cp_info, int srcreg, int operand, uint32_t value); @@ -172,7 +181,6 @@ typedef struct CPUARMState { uint64_t c1_sys; /* System control register. */ uint64_t c1_coproc; /* Coprocessor access register. */ uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */ - uint32_t c1_scr; /* secure config register. */ uint64_t ttbr0_el1; /* MMU translation table base 0. */ uint64_t ttbr1_el1; /* MMU translation table base 1. */ uint64_t c2_control; /* MMU translation table base control. */ @@ -184,6 +192,8 @@ typedef struct CPUARMState { MPU write buffer control. */ uint32_t pmsav5_data_ap; /* PMSAv5 MPU data access permissions */ uint32_t pmsav5_insn_ap; /* PMSAv5 MPU insn access permissions */ + uint64_t hcr_el2; /* Hypervisor configuration register */ + uint64_t scr_el3; /* Secure configuration register. */ uint32_t ifsr_el2; /* Fault status registers. */ uint64_t esr_el[4]; uint32_t c6_region[8]; /* MPU base/size registers. */ @@ -323,6 +333,7 @@ typedef struct CPUARMState { int eabi; #endif + struct CPUBreakpoint *cpu_breakpoint[16]; struct CPUWatchpoint *cpu_watchpoint[16]; CPU_COMMON @@ -498,6 +509,12 @@ void pmccntr_sync(CPUARMState *env); #define PSTATE_MODE_EL1t 4 #define PSTATE_MODE_EL0t 0 +/* Map EL and handler into a PSTATE_MODE. */ +static inline unsigned int aarch64_pstate_mode(unsigned int el, bool handler) +{ + return (el << 2) | handler; +} + /* Return the current PSTATE value. For the moment we don't support 32<->64 bit * interprocessing, so we don't attempt to sync with the cpsr state used by * the 32 bit decoder. @@ -565,6 +582,58 @@ static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) } } +#define HCR_VM (1ULL << 0) +#define HCR_SWIO (1ULL << 1) +#define HCR_PTW (1ULL << 2) +#define HCR_FMO (1ULL << 3) +#define HCR_IMO (1ULL << 4) +#define HCR_AMO (1ULL << 5) +#define HCR_VF (1ULL << 6) +#define HCR_VI (1ULL << 7) +#define HCR_VSE (1ULL << 8) +#define HCR_FB (1ULL << 9) +#define HCR_BSU_MASK (3ULL << 10) +#define HCR_DC (1ULL << 12) +#define HCR_TWI (1ULL << 13) +#define HCR_TWE (1ULL << 14) +#define HCR_TID0 (1ULL << 15) +#define HCR_TID1 (1ULL << 16) +#define HCR_TID2 (1ULL << 17) +#define HCR_TID3 (1ULL << 18) +#define HCR_TSC (1ULL << 19) +#define HCR_TIDCP (1ULL << 20) +#define HCR_TACR (1ULL << 21) +#define HCR_TSW (1ULL << 22) +#define HCR_TPC (1ULL << 23) +#define HCR_TPU (1ULL << 24) +#define HCR_TTLB (1ULL << 25) +#define HCR_TVM (1ULL << 26) +#define HCR_TGE (1ULL << 27) +#define HCR_TDZ (1ULL << 28) +#define HCR_HCD (1ULL << 29) +#define HCR_TRVM (1ULL << 30) +#define HCR_RW (1ULL << 31) +#define HCR_CD (1ULL << 32) +#define HCR_ID (1ULL << 33) +#define HCR_MASK ((1ULL << 34) - 1) + +#define SCR_NS (1U << 0) +#define SCR_IRQ (1U << 1) +#define SCR_FIQ (1U << 2) +#define SCR_EA (1U << 3) +#define SCR_FW (1U << 4) +#define SCR_AW (1U << 5) +#define SCR_NET (1U << 6) +#define SCR_SMD (1U << 7) +#define SCR_HCE (1U << 8) +#define SCR_SIF (1U << 9) +#define SCR_RW (1U << 10) +#define SCR_ST (1U << 11) +#define SCR_TWI (1U << 12) +#define SCR_TWE (1U << 13) +#define SCR_AARCH32_MASK (0x3fff & ~(SCR_RW | SCR_ST)) +#define SCR_AARCH64_MASK (0x3fff & ~SCR_NET) + /* Return the current FPSCR value. */ uint32_t vfp_get_fpscr(CPUARMState *env); void vfp_set_fpscr(CPUARMState *env, uint32_t val); @@ -701,6 +770,7 @@ static inline bool arm_el_is_aa64(CPUARMState *env, int el) } void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf); +unsigned int arm_excp_target_el(CPUState *cs, unsigned int excp_idx); /* Interface between CPU and Interrupt controller. */ void armv7m_nvic_set_pending(void *opaque, int irq); @@ -1111,6 +1181,61 @@ bool write_cpustate_to_list(ARMCPU *cpu); # define TARGET_VIRT_ADDR_SPACE_BITS 32 #endif +static inline bool arm_excp_unmasked(CPUState *cs, unsigned int excp_idx) +{ + CPUARMState *env = cs->env_ptr; + unsigned int cur_el = arm_current_pl(env); + unsigned int target_el = arm_excp_target_el(cs, excp_idx); + /* FIXME: Use actual secure state. */ + bool secure = false; + /* If in EL1/0, Physical IRQ routing to EL2 only happens from NS state. */ + bool irq_can_hyp = !secure && cur_el < 2 && target_el == 2; + /* ARMv7-M interrupt return works by loading a magic value + * into the PC. On real hardware the load causes the + * return to occur. The qemu implementation performs the + * jump normally, then does the exception return when the + * CPU tries to execute code at the magic address. + * This will cause the magic PC value to be pushed to + * the stack if an interrupt occurred at the wrong time. + * We avoid this by disabling interrupts when + * pc contains a magic address. + */ + bool irq_unmasked = !(env->daif & PSTATE_I) + && (!IS_M(env) || env->regs[15] < 0xfffffff0); + + /* Don't take exceptions if they target a lower EL. */ + if (cur_el > target_el) { + return false; + } + + switch (excp_idx) { + case EXCP_FIQ: + if (irq_can_hyp && (env->cp15.hcr_el2 & HCR_FMO)) { + return true; + } + return !(env->daif & PSTATE_F); + case EXCP_IRQ: + if (irq_can_hyp && (env->cp15.hcr_el2 & HCR_IMO)) { + return true; + } + return irq_unmasked; + case EXCP_VFIQ: + if (!secure && !(env->cp15.hcr_el2 & HCR_FMO)) { + /* VFIQs are only taken when hypervized and non-secure. */ + return false; + } + return !(env->daif & PSTATE_F); + case EXCP_VIRQ: + if (!secure && !(env->cp15.hcr_el2 & HCR_IMO)) { + /* VIRQs are only taken when hypervized and non-secure. */ + return false; + } + return irq_unmasked; + default: + g_assert_not_reached(); + } +} + static inline CPUARMState *cpu_init(const char *cpu_model) { ARMCPU *cpu = cpu_arm_init(cpu_model); @@ -1223,6 +1348,11 @@ static inline bool arm_singlestep_active(CPUARMState *env) #define ARM_TBFLAG_SS_ACTIVE_MASK (1 << ARM_TBFLAG_SS_ACTIVE_SHIFT) #define ARM_TBFLAG_PSTATE_SS_SHIFT 19 #define ARM_TBFLAG_PSTATE_SS_MASK (1 << ARM_TBFLAG_PSTATE_SS_SHIFT) +/* We store the bottom two bits of the CPAR as TB flags and handle + * checks on the other bits at runtime + */ +#define ARM_TBFLAG_XSCALE_CPAR_SHIFT 20 +#define ARM_TBFLAG_XSCALE_CPAR_MASK (3 << ARM_TBFLAG_XSCALE_CPAR_SHIFT) /* Bit usage when in AArch64 state */ #define ARM_TBFLAG_AA64_EL_SHIFT 0 @@ -1257,6 +1387,8 @@ static inline bool arm_singlestep_active(CPUARMState *env) (((F) & ARM_TBFLAG_SS_ACTIVE_MASK) >> ARM_TBFLAG_SS_ACTIVE_SHIFT) #define ARM_TBFLAG_PSTATE_SS(F) \ (((F) & ARM_TBFLAG_PSTATE_SS_MASK) >> ARM_TBFLAG_PSTATE_SS_SHIFT) +#define ARM_TBFLAG_XSCALE_CPAR(F) \ + (((F) & ARM_TBFLAG_XSCALE_CPAR_MASK) >> ARM_TBFLAG_XSCALE_CPAR_SHIFT) #define ARM_TBFLAG_AA64_EL(F) \ (((F) & ARM_TBFLAG_AA64_EL_MASK) >> ARM_TBFLAG_AA64_EL_SHIFT) #define ARM_TBFLAG_AA64_FPEN(F) \ @@ -1334,6 +1466,8 @@ static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc, *flags |= ARM_TBFLAG_PSTATE_SS_MASK; } } + *flags |= (extract32(env->cp15.c15_cpar, 0, 2) + << ARM_TBFLAG_XSCALE_CPAR_SHIFT); } *cs_base = 0; |