uint32_t pmsav5_data_ap; /* PMSAv5 MPU data access permissions */
uint32_t pmsav5_insn_ap; /* PMSAv5 MPU insn access permissions */
uint32_t ifsr_el2; /* Fault status registers. */
- uint64_t esr_el[2];
+ uint64_t esr_el[4];
uint32_t c6_region[8]; /* MPU base/size registers. */
- uint64_t far_el1; /* Fault address registers. */
+ uint64_t far_el[4]; /* Fault address registers. */
uint64_t par_el1; /* Translation result. */
uint32_t c9_insn; /* Cache lockdown registers. */
uint32_t c9_data;
uint64_t dbgbcr[16]; /* breakpoint control registers */
uint64_t dbgwvr[16]; /* watchpoint value registers */
uint64_t dbgwcr[16]; /* watchpoint control registers */
+ uint64_t mdscr_el1;
/* If the counter is enabled, this stores the last time the counter
* was reset. Otherwise it stores the counter value
*/
#define CPSR_E (1U << 9)
#define CPSR_IT_2_7 (0xfc00U)
#define CPSR_GE (0xfU << 16)
-#define CPSR_RESERVED (0xfU << 20)
+#define CPSR_IL (1U << 20)
+/* Note that the RESERVED bits include bit 21, which is PSTATE_SS in
+ * an AArch64 SPSR but RES0 in AArch32 SPSR and CPSR. In QEMU we use
+ * env->uncached_cpsr bit 21 to store PSTATE.SS when executing in AArch32,
+ * where it is live state but not accessible to the AArch32 code.
+ */
+#define CPSR_RESERVED (0x7U << 21)
#define CPSR_J (1U << 24)
#define CPSR_IT_0_1 (3U << 25)
#define CPSR_Q (1U << 27)
/* Bits writable in user mode. */
#define CPSR_USER (CPSR_NZCV | CPSR_Q | CPSR_GE)
/* Execution state bits. MRS read as zero, MSR writes ignored. */
-#define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J)
+#define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J | CPSR_IL)
+/* Mask of bits which may be set by exception return copying them from SPSR */
+#define CPSR_ERET_MASK (~CPSR_RESERVED)
+
+#define TTBCR_N (7U << 0) /* TTBCR.EAE==0 */
+#define TTBCR_T0SZ (7U << 0) /* TTBCR.EAE==1 */
+#define TTBCR_PD0 (1U << 4)
+#define TTBCR_PD1 (1U << 5)
+#define TTBCR_EPD0 (1U << 7)
+#define TTBCR_IRGN0 (3U << 8)
+#define TTBCR_ORGN0 (3U << 10)
+#define TTBCR_SH0 (3U << 12)
+#define TTBCR_T1SZ (3U << 16)
+#define TTBCR_A1 (1U << 22)
+#define TTBCR_EPD1 (1U << 23)
+#define TTBCR_IRGN1 (3U << 24)
+#define TTBCR_ORGN1 (3U << 26)
+#define TTBCR_SH1 (1U << 28)
+#define TTBCR_EAE (1U << 31)
/* Bit definitions for ARMv8 SPSR (PSTATE) format.
* Only these are valid when in AArch64 mode; in
ARM_FEATURE_CBAR_RO, /* has cp15 CBAR and it is read-only */
ARM_FEATURE_EL2, /* has EL2 Virtualization support */
ARM_FEATURE_EL3, /* has EL3 Secure monitor support */
+ ARM_FEATURE_V8_SHA1, /* implements SHA1 part of v8 Crypto Extensions */
+ ARM_FEATURE_V8_SHA256, /* implements SHA256 part of v8 Crypto Extensions */
+ ARM_FEATURE_V8_PMULL, /* implements PMULL part of v8 Crypto Extensions */
};
static inline int arm_feature(CPUARMState *env, int feature)
return arm_current_pl(env);
}
+/* Return the Exception Level targeted by debug exceptions;
+ * currently always EL1 since we don't implement EL2 or EL3.
+ */
+static inline int arm_debug_target_el(CPUARMState *env)
+{
+ return 1;
+}
+
+static inline bool aa64_generate_debug_exceptions(CPUARMState *env)
+{
+ if (arm_current_pl(env) == arm_debug_target_el(env)) {
+ if ((extract32(env->cp15.mdscr_el1, 13, 1) == 0)
+ || (env->daif & PSTATE_D)) {
+ return false;
+ }
+ }
+ return true;
+}
+
+static inline bool aa32_generate_debug_exceptions(CPUARMState *env)
+{
+ if (arm_current_pl(env) == 0 && arm_el_is_aa64(env, 1)) {
+ return aa64_generate_debug_exceptions(env);
+ }
+ return arm_current_pl(env) != 2;
+}
+
+/* Return true if debugging exceptions are currently enabled.
+ * This corresponds to what in ARM ARM pseudocode would be
+ * if UsingAArch32() then
+ * return AArch32.GenerateDebugExceptions()
+ * else
+ * return AArch64.GenerateDebugExceptions()
+ * We choose to push the if() down into this function for clarity,
+ * since the pseudocode has it at all callsites except for the one in
+ * CheckSoftwareStep(), where it is elided because both branches would
+ * always return the same value.
+ *
+ * Parts of the pseudocode relating to EL2 and EL3 are omitted because we
+ * don't yet implement those exception levels or their associated trap bits.
+ */
+static inline bool arm_generate_debug_exceptions(CPUARMState *env)
+{
+ if (env->aarch64) {
+ return aa64_generate_debug_exceptions(env);
+ } else {
+ return aa32_generate_debug_exceptions(env);
+ }
+}
+
+/* Is single-stepping active? (Note that the "is EL_D AArch64?" check
+ * implicitly means this always returns false in pre-v8 CPUs.)
+ */
+static inline bool arm_singlestep_active(CPUARMState *env)
+{
+ return extract32(env->cp15.mdscr_el1, 0, 1)
+ && arm_el_is_aa64(env, arm_debug_target_el(env))
+ && arm_generate_debug_exceptions(env);
+}
+
#include "exec/cpu-all.h"
/* Bit usage in the TB flags field: bit 31 indicates whether we are
}
}
-/* Load an instruction and return it in the standard little-endian order */
-static inline uint32_t arm_ldl_code(CPUARMState *env, target_ulong addr,
- bool do_swap)
-{
- uint32_t insn = cpu_ldl_code(env, addr);
- if (do_swap) {
- return bswap32(insn);
- }
- return insn;
-}
-
-/* Ditto, for a halfword (Thumb) instruction */
-static inline uint16_t arm_lduw_code(CPUARMState *env, target_ulong addr,
- bool do_swap)
-{
- uint16_t insn = cpu_lduw_code(env, addr);
- if (do_swap) {
- return bswap16(insn);
- }
- return insn;
-}
-
#endif
projects / qemu.git / blobdiff