#ifndef TARGET_ARM_INTERNALS_H
#define TARGET_ARM_INTERNALS_H
+/* register banks for CPU modes */
+#define BANK_USRSYS 0
+#define BANK_SVC 1
+#define BANK_ABT 2
+#define BANK_UND 3
+#define BANK_IRQ 4
+#define BANK_FIQ 5
+#define BANK_HYP 6
+#define BANK_MON 7
+
static inline bool excp_is_internal(int excp)
{
/* Return true if this exception number represents a QEMU-internal
|| excp == EXCP_HALTED
|| excp == EXCP_EXCEPTION_EXIT
|| excp == EXCP_KERNEL_TRAP
- || excp == EXCP_STREX;
+ || excp == EXCP_SEMIHOST;
}
/* Exception names for debug logging; note that not all of these
[EXCP_BKPT] = "Breakpoint",
[EXCP_EXCEPTION_EXIT] = "QEMU v7M exception exit",
[EXCP_KERNEL_TRAP] = "QEMU intercept of kernel commpage",
- [EXCP_STREX] = "QEMU intercept of STREX",
+ [EXCP_HVC] = "Hypervisor Call",
+ [EXCP_HYP_TRAP] = "Hypervisor Trap",
+ [EXCP_SMC] = "Secure Monitor Call",
+ [EXCP_VIRQ] = "Virtual IRQ",
+ [EXCP_VFIQ] = "Virtual FIQ",
+ [EXCP_SEMIHOST] = "Semihosting call",
};
-static inline void arm_log_exception(int idx)
-{
- if (qemu_loglevel_mask(CPU_LOG_INT)) {
- const char *exc = NULL;
-
- if (idx >= 0 && idx < ARRAY_SIZE(excnames)) {
- exc = excnames[idx];
- }
- if (!exc) {
- exc = "unknown";
- }
- qemu_log_mask(CPU_LOG_INT, "Taking exception %d [%s]\n", idx, exc);
- }
-}
-
/* Scale factor for generic timers, ie number of ns per tick.
* This gives a 62.5MHz timer.
*/
/*
* For AArch64, map a given EL to an index in the banked_spsr array.
+ * Note that this mapping and the AArch32 mapping defined in bank_number()
+ * must agree such that the AArch64<->AArch32 SPSRs have the architecturally
+ * mandated mapping between each other.
*/
static inline unsigned int aarch64_banked_spsr_index(unsigned int el)
{
static const unsigned int map[4] = {
- [1] = 0, /* EL1. */
- [2] = 6, /* EL2. */
- [3] = 7, /* EL3. */
+ [1] = BANK_SVC, /* EL1. */
+ [2] = BANK_HYP, /* EL2. */
+ [3] = BANK_MON, /* EL3. */
};
assert(el >= 1 && el <= 3);
return map[el];
}
-int bank_number(int mode);
+/* Map CPU modes onto saved register banks. */
+static inline int bank_number(int mode)
+{
+ switch (mode) {
+ case ARM_CPU_MODE_USR:
+ case ARM_CPU_MODE_SYS:
+ return BANK_USRSYS;
+ case ARM_CPU_MODE_SVC:
+ return BANK_SVC;
+ case ARM_CPU_MODE_ABT:
+ return BANK_ABT;
+ case ARM_CPU_MODE_UND:
+ return BANK_UND;
+ case ARM_CPU_MODE_IRQ:
+ return BANK_IRQ;
+ case ARM_CPU_MODE_FIQ:
+ return BANK_FIQ;
+ case ARM_CPU_MODE_HYP:
+ return BANK_HYP;
+ case ARM_CPU_MODE_MON:
+ return BANK_MON;
+ }
+ g_assert_not_reached();
+}
+
void switch_mode(CPUARMState *, int);
void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu);
void arm_translate_init(void);
static inline void update_spsel(CPUARMState *env, uint32_t imm)
{
- unsigned int cur_el = arm_current_pl(env);
+ unsigned int cur_el = arm_current_el(env);
/* Update PSTATE SPSel bit; this requires us to update the
* working stack pointer in xregs[31].
*/
aarch64_restore_sp(env, cur_el);
}
+/*
+ * arm_pamax
+ * @cpu: ARMCPU
+ *
+ * Returns the implementation defined bit-width of physical addresses.
+ * The ARMv8 reference manuals refer to this as PAMax().
+ */
+static inline unsigned int arm_pamax(ARMCPU *cpu)
+{
+ static const unsigned int pamax_map[] = {
+ [0] = 32,
+ [1] = 36,
+ [2] = 40,
+ [3] = 42,
+ [4] = 44,
+ [5] = 48,
+ };
+ unsigned int parange = extract32(cpu->id_aa64mmfr0, 0, 4);
+
+ /* id_aa64mmfr0 is a read-only register so values outside of the
+ * supported mappings can be considered an implementation error. */
+ assert(parange < ARRAY_SIZE(pamax_map));
+ return pamax_map[parange];
+}
+
/* Return true if extended addresses are enabled.
* This is always the case if our translation regime is 64 bit,
* but depends on TTBCR.EAE for 32 bit.
*/
static inline bool extended_addresses_enabled(CPUARMState *env)
{
- return arm_el_is_aa64(env, 1)
- || ((arm_feature(env, ARM_FEATURE_LPAE)
- && (env->cp15.c2_control & TTBCR_EAE)));
+ TCR *tcr = &env->cp15.tcr_el[arm_is_secure(env) ? 3 : 1];
+ return arm_el_is_aa64(env, 1) ||
+ (arm_feature(env, ARM_FEATURE_LPAE) && (tcr->raw_tcr & TTBCR_EAE));
}
/* Valid Syndrome Register EC field values */
#define ARM_EL_EC_SHIFT 26
#define ARM_EL_IL_SHIFT 25
+#define ARM_EL_ISV_SHIFT 24
#define ARM_EL_IL (1 << ARM_EL_IL_SHIFT)
+#define ARM_EL_ISV (1 << ARM_EL_ISV_SHIFT)
/* Utility functions for constructing various kinds of syndrome value.
* Note that in general we follow the AArch64 syndrome values; in a
return (EC_AA64_SVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff);
}
-static inline uint32_t syn_aa32_svc(uint32_t imm16, bool is_thumb)
+static inline uint32_t syn_aa64_hvc(uint32_t imm16)
+{
+ return (EC_AA64_HVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff);
+}
+
+static inline uint32_t syn_aa64_smc(uint32_t imm16)
+{
+ return (EC_AA64_SMC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff);
+}
+
+static inline uint32_t syn_aa32_svc(uint32_t imm16, bool is_16bit)
{
return (EC_AA32_SVC << ARM_EL_EC_SHIFT) | (imm16 & 0xffff)
- | (is_thumb ? 0 : ARM_EL_IL);
+ | (is_16bit ? 0 : ARM_EL_IL);
+}
+
+static inline uint32_t syn_aa32_hvc(uint32_t imm16)
+{
+ return (EC_AA32_HVC << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff);
+}
+
+static inline uint32_t syn_aa32_smc(void)
+{
+ return (EC_AA32_SMC << ARM_EL_EC_SHIFT) | ARM_EL_IL;
}
static inline uint32_t syn_aa64_bkpt(uint32_t imm16)
return (EC_AA64_BKPT << ARM_EL_EC_SHIFT) | ARM_EL_IL | (imm16 & 0xffff);
}
-static inline uint32_t syn_aa32_bkpt(uint32_t imm16, bool is_thumb)
+static inline uint32_t syn_aa32_bkpt(uint32_t imm16, bool is_16bit)
{
return (EC_AA32_BKPT << ARM_EL_EC_SHIFT) | (imm16 & 0xffff)
- | (is_thumb ? 0 : ARM_EL_IL);
+ | (is_16bit ? 0 : ARM_EL_IL);
}
static inline uint32_t syn_aa64_sysregtrap(int op0, int op1, int op2,
static inline uint32_t syn_cp14_rt_trap(int cv, int cond, int opc1, int opc2,
int crn, int crm, int rt, int isread,
- bool is_thumb)
+ bool is_16bit)
{
return (EC_CP14RTTRAP << ARM_EL_EC_SHIFT)
- | (is_thumb ? 0 : ARM_EL_IL)
+ | (is_16bit ? 0 : ARM_EL_IL)
| (cv << 24) | (cond << 20) | (opc2 << 17) | (opc1 << 14)
| (crn << 10) | (rt << 5) | (crm << 1) | isread;
}
static inline uint32_t syn_cp15_rt_trap(int cv, int cond, int opc1, int opc2,
int crn, int crm, int rt, int isread,
- bool is_thumb)
+ bool is_16bit)
{
return (EC_CP15RTTRAP << ARM_EL_EC_SHIFT)
- | (is_thumb ? 0 : ARM_EL_IL)
+ | (is_16bit ? 0 : ARM_EL_IL)
| (cv << 24) | (cond << 20) | (opc2 << 17) | (opc1 << 14)
| (crn << 10) | (rt << 5) | (crm << 1) | isread;
}
static inline uint32_t syn_cp14_rrt_trap(int cv, int cond, int opc1, int crm,
int rt, int rt2, int isread,
- bool is_thumb)
+ bool is_16bit)
{
return (EC_CP14RRTTRAP << ARM_EL_EC_SHIFT)
- | (is_thumb ? 0 : ARM_EL_IL)
+ | (is_16bit ? 0 : ARM_EL_IL)
| (cv << 24) | (cond << 20) | (opc1 << 16)
| (rt2 << 10) | (rt << 5) | (crm << 1) | isread;
}
static inline uint32_t syn_cp15_rrt_trap(int cv, int cond, int opc1, int crm,
int rt, int rt2, int isread,
- bool is_thumb)
+ bool is_16bit)
{
return (EC_CP15RRTTRAP << ARM_EL_EC_SHIFT)
- | (is_thumb ? 0 : ARM_EL_IL)
+ | (is_16bit ? 0 : ARM_EL_IL)
| (cv << 24) | (cond << 20) | (opc1 << 16)
| (rt2 << 10) | (rt << 5) | (crm << 1) | isread;
}
-static inline uint32_t syn_fp_access_trap(int cv, int cond, bool is_thumb)
+static inline uint32_t syn_fp_access_trap(int cv, int cond, bool is_16bit)
{
return (EC_ADVSIMDFPACCESSTRAP << ARM_EL_EC_SHIFT)
- | (is_thumb ? 0 : ARM_EL_IL)
+ | (is_16bit ? 0 : ARM_EL_IL)
| (cv << 24) | (cond << 20);
}
static inline uint32_t syn_insn_abort(int same_el, int ea, int s1ptw, int fsc)
{
return (EC_INSNABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT)
- | (ea << 9) | (s1ptw << 7) | fsc;
+ | ARM_EL_IL | (ea << 9) | (s1ptw << 7) | fsc;
}
-static inline uint32_t syn_data_abort(int same_el, int ea, int cm, int s1ptw,
- int wnr, int fsc)
+static inline uint32_t syn_data_abort_no_iss(int same_el,
+ int ea, int cm, int s1ptw,
+ int wnr, int fsc)
{
return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT)
- | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc;
+ | ARM_EL_IL
+ | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc;
+}
+
+static inline uint32_t syn_data_abort_with_iss(int same_el,
+ int sas, int sse, int srt,
+ int sf, int ar,
+ int ea, int cm, int s1ptw,
+ int wnr, int fsc,
+ bool is_16bit)
+{
+ return (EC_DATAABORT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT)
+ | (is_16bit ? 0 : ARM_EL_IL)
+ | ARM_EL_ISV | (sas << 22) | (sse << 21) | (srt << 16)
+ | (sf << 15) | (ar << 14)
+ | (ea << 9) | (cm << 8) | (s1ptw << 7) | (wnr << 6) | fsc;
}
static inline uint32_t syn_swstep(int same_el, int isv, int ex)
{
return (EC_SOFTWARESTEP << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT)
- | (isv << 24) | (ex << 6) | 0x22;
+ | ARM_EL_IL | (isv << 24) | (ex << 6) | 0x22;
}
static inline uint32_t syn_watchpoint(int same_el, int cm, int wnr)
{
return (EC_WATCHPOINT << ARM_EL_EC_SHIFT) | (same_el << ARM_EL_EC_SHIFT)
- | (cm << 8) | (wnr << 6) | 0x22;
+ | ARM_EL_IL | (cm << 8) | (wnr << 6) | 0x22;
}
static inline uint32_t syn_breakpoint(int same_el)
| ARM_EL_IL | 0x22;
}
+static inline uint32_t syn_wfx(int cv, int cond, int ti)
+{
+ return (EC_WFX_TRAP << ARM_EL_EC_SHIFT) |
+ (cv << 24) | (cond << 20) | ti;
+}
+
/* Update a QEMU watchpoint based on the information the guest has set in the
* DBGWCR<n>_EL1 and DBGWVR<n>_EL1 registers.
*/
*/
void hw_breakpoint_update_all(ARMCPU *cpu);
+/* Callback function for checking if a watchpoint should trigger. */
+bool arm_debug_check_watchpoint(CPUState *cs, CPUWatchpoint *wp);
+
/* Callback function for when a watchpoint or breakpoint triggers. */
void arm_debug_excp_handler(CPUState *cs);
+#ifdef CONFIG_USER_ONLY
+static inline bool arm_is_psci_call(ARMCPU *cpu, int excp_type)
+{
+ return false;
+}
+#else
+/* Return true if the r0/x0 value indicates that this SMC/HVC is a PSCI call. */
+bool arm_is_psci_call(ARMCPU *cpu, int excp_type);
+/* Actually handle a PSCI call */
+void arm_handle_psci_call(ARMCPU *cpu);
+#endif
+
+/**
+ * ARMMMUFaultInfo: Information describing an ARM MMU Fault
+ * @s2addr: Address that caused a fault at stage 2
+ * @stage2: True if we faulted at stage 2
+ * @s1ptw: True if we faulted at stage 2 while doing a stage 1 page-table walk
+ */
+typedef struct ARMMMUFaultInfo ARMMMUFaultInfo;
+struct ARMMMUFaultInfo {
+ target_ulong s2addr;
+ bool stage2;
+ bool s1ptw;
+};
+
+/* Do a page table walk and add page to TLB if possible */
+bool arm_tlb_fill(CPUState *cpu, vaddr address, int rw, int mmu_idx,
+ uint32_t *fsr, ARMMMUFaultInfo *fi);
+
+/* Return true if the stage 1 translation regime is using LPAE format page
+ * tables */
+bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx);
+
+/* Raise a data fault alignment exception for the specified virtual address */
+void arm_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
+ MMUAccessType access_type,
+ int mmu_idx, uintptr_t retaddr);
+
+/* Call the EL change hook if one has been registered */
+static inline void arm_call_el_change_hook(ARMCPU *cpu)
+{
+ if (cpu->el_change_hook) {
+ cpu->el_change_hook(cpu, cpu->el_change_hook_opaque);
+ }
+}
+
#endif
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