#ifndef CPU_ARM_H
#define CPU_ARM_H
-#define TARGET_LONG_BITS 32
+#include "config.h"
+
+#include "kvm-consts.h"
-#define ELF_MACHINE EM_ARM
+#if defined(TARGET_AARCH64)
+ /* AArch64 definitions */
+# define TARGET_LONG_BITS 64
+# define ELF_MACHINE EM_AARCH64
+#else
+# define TARGET_LONG_BITS 32
+# define ELF_MACHINE EM_ARM
+#endif
#define CPUArchState struct CPUARMState
-#include "config.h"
#include "qemu-common.h"
-#include "cpu-defs.h"
+#include "exec/cpu-defs.h"
-#include "softfloat.h"
+#include "fpu/softfloat.h"
#define TARGET_HAS_ICE 1
/* ARM-specific interrupt pending bits. */
#define CPU_INTERRUPT_FIQ CPU_INTERRUPT_TGT_EXT_1
+/* Meanings of the ARMCPU object's two inbound GPIO lines */
+#define ARM_CPU_IRQ 0
+#define ARM_CPU_FIQ 1
typedef void ARMWriteCPFunc(void *opaque, int cp_info,
int srcreg, int operand, uint32_t value);
s<2n+1> maps to the most significant half of d<n>
*/
+/* CPU state for each instance of a generic timer (in cp15 c14) */
+typedef struct ARMGenericTimer {
+ uint64_t cval; /* Timer CompareValue register */
+ uint32_t ctl; /* Timer Control register */
+} ARMGenericTimer;
+
+#define GTIMER_PHYS 0
+#define GTIMER_VIRT 1
+#define NUM_GTIMERS 2
+
+/* Scale factor for generic timers, ie number of ns per tick.
+ * This gives a 62.5MHz timer.
+ */
+#define GTIMER_SCALE 16
+
typedef struct CPUARMState {
/* Regs for current mode. */
uint32_t regs[16];
+
+ /* 32/64 switch only happens when taking and returning from
+ * exceptions so the overlap semantics are taken care of then
+ * instead of having a complicated union.
+ */
+ /* Regs for A64 mode. */
+ uint64_t xregs[32];
+ uint64_t pc;
+ /* PSTATE isn't an architectural register for ARMv8. However, it is
+ * convenient for us to assemble the underlying state into a 32 bit format
+ * identical to the architectural format used for the SPSR. (This is also
+ * what the Linux kernel's 'pstate' field in signal handlers and KVM's
+ * 'pstate' register are.) Of the PSTATE bits:
+ * NZCV are kept in the split out env->CF/VF/NF/ZF, (which have the same
+ * semantics as for AArch32, as described in the comments on each field)
+ * nRW (also known as M[4]) is kept, inverted, in env->aarch64
+ * all other bits are stored in their correct places in env->pstate
+ */
+ uint32_t pstate;
+ uint32_t aarch64; /* 1 if CPU is in aarch64 state; inverse of PSTATE.nRW */
+
/* Frequently accessed CPSR bits are stored separately for efficiency.
This contains all the other bits. Use cpsr_{read,write} to access
the whole CPSR. */
uint32_t c9_pmxevtyper; /* perf monitor event type */
uint32_t c9_pmuserenr; /* perf monitor user enable */
uint32_t c9_pminten; /* perf monitor interrupt enables */
+ uint32_t c12_vbar; /* vector base address register */
uint32_t c13_fcse; /* FCSE PID. */
uint32_t c13_context; /* Context ID. */
uint32_t c13_tls1; /* User RW Thread register. */
uint32_t c13_tls2; /* User RO Thread register. */
uint32_t c13_tls3; /* Privileged Thread register. */
+ uint32_t c14_cntfrq; /* Counter Frequency register */
+ uint32_t c14_cntkctl; /* Timer Control register */
+ ARMGenericTimer c14_timer[NUM_GTIMERS];
uint32_t c15_cpar; /* XScale Coprocessor Access Register */
uint32_t c15_ticonfig; /* TI925T configuration byte. */
uint32_t c15_i_max; /* Maximum D-cache dirty line index. */
uint32_t c15_power_control; /* power control */
} cp15;
+ /* System registers (AArch64) */
+ struct {
+ uint64_t tpidr_el0;
+ } sr;
+
struct {
uint32_t other_sp;
uint32_t vecbase;
/* VFP coprocessor state. */
struct {
- float64 regs[32];
+ /* VFP/Neon register state. Note that the mapping between S, D and Q
+ * views of the register bank differs between AArch64 and AArch32:
+ * In AArch32:
+ * Qn = regs[2n+1]:regs[2n]
+ * Dn = regs[n]
+ * Sn = regs[n/2] bits 31..0 for even n, and bits 63..32 for odd n
+ * (and regs[32] to regs[63] are inaccessible)
+ * In AArch64:
+ * Qn = regs[2n+1]:regs[2n]
+ * Dn = regs[2n]
+ * Sn = regs[2n] bits 31..0
+ * This corresponds to the architecturally defined mapping between
+ * the two execution states, and means we do not need to explicitly
+ * map these registers when changing states.
+ */
+ float64 regs[64];
uint32_t xregs[16];
/* We store these fpcsr fields separately for convenience. */
ARMCPU *cpu_arm_init(const char *cpu_model);
void arm_translate_init(void);
+void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu);
int cpu_arm_exec(CPUARMState *s);
-void do_interrupt(CPUARMState *);
+int bank_number(int mode);
void switch_mode(CPUARMState *, int);
uint32_t do_arm_semihosting(CPUARMState *env);
+static inline bool is_a64(CPUARMState *env)
+{
+ return env->aarch64;
+}
+
/* you can call this signal handler from your SIGBUS and SIGSEGV
signal handlers to inform the virtual CPU of exceptions. non zero
is returned if the signal was handled by the virtual CPU. */
int mmu_idx);
#define cpu_handle_mmu_fault cpu_arm_handle_mmu_fault
-static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
-{
- env->cp15.c13_tls2 = newtls;
-}
-
-#define CPSR_M (0x1f)
-#define CPSR_T (1 << 5)
-#define CPSR_F (1 << 6)
-#define CPSR_I (1 << 7)
-#define CPSR_A (1 << 8)
-#define CPSR_E (1 << 9)
-#define CPSR_IT_2_7 (0xfc00)
-#define CPSR_GE (0xf << 16)
-#define CPSR_RESERVED (0xf << 20)
-#define CPSR_J (1 << 24)
-#define CPSR_IT_0_1 (3 << 25)
-#define CPSR_Q (1 << 27)
-#define CPSR_V (1 << 28)
-#define CPSR_C (1 << 29)
-#define CPSR_Z (1 << 30)
-#define CPSR_N (1 << 31)
+#define CPSR_M (0x1fU)
+#define CPSR_T (1U << 5)
+#define CPSR_F (1U << 6)
+#define CPSR_I (1U << 7)
+#define CPSR_A (1U << 8)
+#define CPSR_E (1U << 9)
+#define CPSR_IT_2_7 (0xfc00U)
+#define CPSR_GE (0xfU << 16)
+#define CPSR_RESERVED (0xfU << 20)
+#define CPSR_J (1U << 24)
+#define CPSR_IT_0_1 (3U << 25)
+#define CPSR_Q (1U << 27)
+#define CPSR_V (1U << 28)
+#define CPSR_C (1U << 29)
+#define CPSR_Z (1U << 30)
+#define CPSR_N (1U << 31)
#define CPSR_NZCV (CPSR_N | CPSR_Z | CPSR_C | CPSR_V)
#define CPSR_IT (CPSR_IT_0_1 | CPSR_IT_2_7)
/* Execution state bits. MRS read as zero, MSR writes ignored. */
#define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J)
+/* Bit definitions for ARMv8 SPSR (PSTATE) format.
+ * Only these are valid when in AArch64 mode; in
+ * AArch32 mode SPSRs are basically CPSR-format.
+ */
+#define PSTATE_M (0xFU)
+#define PSTATE_nRW (1U << 4)
+#define PSTATE_F (1U << 6)
+#define PSTATE_I (1U << 7)
+#define PSTATE_A (1U << 8)
+#define PSTATE_D (1U << 9)
+#define PSTATE_IL (1U << 20)
+#define PSTATE_SS (1U << 21)
+#define PSTATE_V (1U << 28)
+#define PSTATE_C (1U << 29)
+#define PSTATE_Z (1U << 30)
+#define PSTATE_N (1U << 31)
+#define PSTATE_NZCV (PSTATE_N | PSTATE_Z | PSTATE_C | PSTATE_V)
+#define CACHED_PSTATE_BITS (PSTATE_NZCV)
+/* Mode values for AArch64 */
+#define PSTATE_MODE_EL3h 13
+#define PSTATE_MODE_EL3t 12
+#define PSTATE_MODE_EL2h 9
+#define PSTATE_MODE_EL2t 8
+#define PSTATE_MODE_EL1h 5
+#define PSTATE_MODE_EL1t 4
+#define PSTATE_MODE_EL0t 0
+
+/* 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.
+ */
+static inline uint32_t pstate_read(CPUARMState *env)
+{
+ int ZF;
+
+ ZF = (env->ZF == 0);
+ return (env->NF & 0x80000000) | (ZF << 30)
+ | (env->CF << 29) | ((env->VF & 0x80000000) >> 3)
+ | env->pstate;
+}
+
+static inline void pstate_write(CPUARMState *env, uint32_t val)
+{
+ env->ZF = (~val) & PSTATE_Z;
+ env->NF = val;
+ env->CF = (val >> 29) & 1;
+ env->VF = (val << 3) & 0x80000000;
+ env->pstate = val & ~CACHED_PSTATE_BITS;
+}
+
/* Return the current CPSR value. */
uint32_t cpsr_read(CPUARMState *env);
/* Set the CPSR. Note that some bits of mask must be all-set or all-clear. */
uint32_t vfp_get_fpscr(CPUARMState *env);
void vfp_set_fpscr(CPUARMState *env, uint32_t val);
+/* For A64 the FPSCR is split into two logically distinct registers,
+ * FPCR and FPSR. However since they still use non-overlapping bits
+ * we store the underlying state in fpscr and just mask on read/write.
+ */
+#define FPSR_MASK 0xf800009f
+#define FPCR_MASK 0x07f79f00
+static inline uint32_t vfp_get_fpsr(CPUARMState *env)
+{
+ return vfp_get_fpscr(env) & FPSR_MASK;
+}
+
+static inline void vfp_set_fpsr(CPUARMState *env, uint32_t val)
+{
+ uint32_t new_fpscr = (vfp_get_fpscr(env) & ~FPSR_MASK) | (val & FPSR_MASK);
+ vfp_set_fpscr(env, new_fpscr);
+}
+
+static inline uint32_t vfp_get_fpcr(CPUARMState *env)
+{
+ return vfp_get_fpscr(env) & FPCR_MASK;
+}
+
+static inline void vfp_set_fpcr(CPUARMState *env, uint32_t val)
+{
+ uint32_t new_fpscr = (vfp_get_fpscr(env) & ~FPCR_MASK) | (val & FPCR_MASK);
+ vfp_set_fpscr(env, new_fpscr);
+}
+
enum arm_cpu_mode {
ARM_CPU_MODE_USR = 0x10,
ARM_CPU_MODE_FIQ = 0x11,
ARM_FEATURE_MPIDR, /* has cp15 MPIDR */
ARM_FEATURE_PXN, /* has Privileged Execute Never bit */
ARM_FEATURE_LPAE, /* has Large Physical Address Extension */
+ ARM_FEATURE_V8,
+ ARM_FEATURE_AARCH64, /* supports 64 bit mode */
+ ARM_FEATURE_V8_AES, /* implements AES part of v8 Crypto Extensions */
+ ARM_FEATURE_CBAR, /* has cp15 CBAR */
};
static inline int arm_feature(CPUARMState *env, int feature)
* or via MRRC/MCRR?)
* We allow 4 bits for opc1 because MRRC/MCRR have a 4 bit field.
* (In this case crn and opc2 should be zero.)
+ * For AArch64, there is no 32/64 bit size distinction;
+ * instead all registers have a 2 bit op0, 3 bit op1 and op2,
+ * and 4 bit CRn and CRm. The encoding patterns are chosen
+ * to be easy to convert to and from the KVM encodings, and also
+ * so that the hashtable can contain both AArch32 and AArch64
+ * registers (to allow for interprocessing where we might run
+ * 32 bit code on a 64 bit core).
*/
+/* This bit is private to our hashtable cpreg; in KVM register
+ * IDs the AArch64/32 distinction is the KVM_REG_ARM/ARM64
+ * in the upper bits of the 64 bit ID.
+ */
+#define CP_REG_AA64_SHIFT 28
+#define CP_REG_AA64_MASK (1 << CP_REG_AA64_SHIFT)
+
#define ENCODE_CP_REG(cp, is64, crn, crm, opc1, opc2) \
(((cp) << 16) | ((is64) << 15) | ((crn) << 11) | \
((crm) << 7) | ((opc1) << 3) | (opc2))
+#define ENCODE_AA64_CP_REG(cp, crn, crm, op0, op1, op2) \
+ (CP_REG_AA64_MASK | \
+ ((cp) << CP_REG_ARM_COPROC_SHIFT) | \
+ ((op0) << CP_REG_ARM64_SYSREG_OP0_SHIFT) | \
+ ((op1) << CP_REG_ARM64_SYSREG_OP1_SHIFT) | \
+ ((crn) << CP_REG_ARM64_SYSREG_CRN_SHIFT) | \
+ ((crm) << CP_REG_ARM64_SYSREG_CRM_SHIFT) | \
+ ((op2) << CP_REG_ARM64_SYSREG_OP2_SHIFT))
+
+/* Convert a full 64 bit KVM register ID to the truncated 32 bit
+ * version used as a key for the coprocessor register hashtable
+ */
+static inline uint32_t kvm_to_cpreg_id(uint64_t kvmid)
+{
+ uint32_t cpregid = kvmid;
+ if ((kvmid & CP_REG_ARCH_MASK) == CP_REG_ARM64) {
+ cpregid |= CP_REG_AA64_MASK;
+ } else if ((kvmid & CP_REG_SIZE_MASK) == CP_REG_SIZE_U64) {
+ cpregid |= (1 << 15);
+ }
+ return cpregid;
+}
+
+/* Convert a truncated 32 bit hashtable key into the full
+ * 64 bit KVM register ID.
+ */
+static inline uint64_t cpreg_to_kvm_id(uint32_t cpregid)
+{
+ uint64_t kvmid;
+
+ if (cpregid & CP_REG_AA64_MASK) {
+ kvmid = cpregid & ~CP_REG_AA64_MASK;
+ kvmid |= CP_REG_SIZE_U64 | CP_REG_ARM64;
+ } else {
+ kvmid = cpregid & ~(1 << 15);
+ if (cpregid & (1 << 15)) {
+ kvmid |= CP_REG_SIZE_U64 | CP_REG_ARM;
+ } else {
+ kvmid |= CP_REG_SIZE_U32 | CP_REG_ARM;
+ }
+ }
+ return kvmid;
+}
+
/* ARMCPRegInfo type field bits. If the SPECIAL bit is set this is a
* special-behaviour cp reg and bits [15..8] indicate what behaviour
* it has. Otherwise it is a simple cp reg, where CONST indicates that
* a register definition to override a previous definition for the
* same (cp, is64, crn, crm, opc1, opc2) tuple: either the new or the
* old must have the OVERRIDE bit set.
+ * NO_MIGRATE indicates that this register should be ignored for migration;
+ * (eg because any state is accessed via some other coprocessor register).
+ * IO indicates that this register does I/O and therefore its accesses
+ * need to be surrounded by gen_io_start()/gen_io_end(). In particular,
+ * registers which implement clocks or timers require this.
*/
#define ARM_CP_SPECIAL 1
#define ARM_CP_CONST 2
#define ARM_CP_64BIT 4
#define ARM_CP_SUPPRESS_TB_END 8
#define ARM_CP_OVERRIDE 16
+#define ARM_CP_NO_MIGRATE 32
+#define ARM_CP_IO 64
#define ARM_CP_NOP (ARM_CP_SPECIAL | (1 << 8))
#define ARM_CP_WFI (ARM_CP_SPECIAL | (2 << 8))
#define ARM_LAST_SPECIAL ARM_CP_WFI
/* Used only as a terminator for ARMCPRegInfo lists */
#define ARM_CP_SENTINEL 0xffff
/* Mask of only the flag bits in a type field */
-#define ARM_CP_FLAG_MASK 0x1f
+#define ARM_CP_FLAG_MASK 0x7f
+
+/* Valid values for ARMCPRegInfo state field, indicating which of
+ * the AArch32 and AArch64 execution states this register is visible in.
+ * If the reginfo doesn't explicitly specify then it is AArch32 only.
+ * If the reginfo is declared to be visible in both states then a second
+ * reginfo is synthesised for the AArch32 view of the AArch64 register,
+ * such that the AArch32 view is the lower 32 bits of the AArch64 one.
+ * Note that we rely on the values of these enums as we iterate through
+ * the various states in some places.
+ */
+enum {
+ ARM_CP_STATE_AA32 = 0,
+ ARM_CP_STATE_AA64 = 1,
+ ARM_CP_STATE_BOTH = 2,
+};
/* Return true if cptype is a valid type field. This is used to try to
* catch errors where the sentinel has been accidentally left off the end
{
return ((cptype & ~ARM_CP_FLAG_MASK) == 0)
|| ((cptype & ARM_CP_SPECIAL) &&
- (cptype <= ARM_LAST_SPECIAL));
+ ((cptype & ~ARM_CP_FLAG_MASK) <= ARM_LAST_SPECIAL));
}
/* Access rights:
* (ie anything visible in PL2 is visible in S-PL1, some things are only
* visible in S-PL1) but "Secure PL1" is a bit of a mouthful, we bend the
* terminology a little and call this PL3.
+ * In AArch64 things are somewhat simpler as the PLx bits line up exactly
+ * with the ELx exception levels.
*
* If access permissions for a register are more complex than can be
* described with these bits, then use a laxer set of restrictions, and
static inline int arm_current_pl(CPUARMState *env)
{
+ if (env->aarch64) {
+ return extract32(env->pstate, 2, 2);
+ }
+
if ((env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR) {
return 0;
}
* then behave differently on read/write if necessary.
* For 64 bit registers, only crm and opc1 are relevant; crn and opc2
* must both be zero.
+ * For AArch64-visible registers, opc0 is also used.
+ * Since there are no "coprocessors" in AArch64, cp is purely used as a
+ * way to distinguish (for KVM's benefit) guest-visible system registers
+ * from demuxed ones provided to preserve the "no side effects on
+ * KVM register read/write from QEMU" semantics. cp==0x13 is guest
+ * visible (to match KVM's encoding); cp==0 will be converted to
+ * cp==0x13 when the ARMCPRegInfo is registered, for convenience.
*/
uint8_t cp;
uint8_t crn;
uint8_t crm;
+ uint8_t opc0;
uint8_t opc1;
uint8_t opc2;
+ /* Execution state in which this register is visible: ARM_CP_STATE_* */
+ int state;
/* Register type: ARM_CP_* bits/values */
int type;
/* Access rights: PL*_[RW] */
* by fieldoffset.
*/
CPWriteFn *writefn;
+ /* Function for doing a "raw" read; used when we need to copy
+ * coprocessor state to the kernel for KVM or out for
+ * migration. This only needs to be provided if there is also a
+ * readfn and it makes an access permission check.
+ */
+ CPReadFn *raw_readfn;
+ /* Function for doing a "raw" write; used when we need to copy KVM
+ * kernel coprocessor state into userspace, or for inbound
+ * migration. This only needs to be provided if there is also a
+ * writefn and it makes an access permission check or masks out
+ * "unwritable" bits or has write-one-to-clear or similar behaviour.
+ */
+ CPWriteFn *raw_writefn;
/* Function for resetting the register. If NULL, then reset will be done
* by writing resetvalue to the field specified in fieldoffset. If
* fieldoffset is 0 then no reset will be done.
{
define_one_arm_cp_reg_with_opaque(cpu, regs, 0);
}
-const ARMCPRegInfo *get_arm_cp_reginfo(ARMCPU *cpu, uint32_t encoded_cp);
+const ARMCPRegInfo *get_arm_cp_reginfo(GHashTable *cpregs, uint32_t encoded_cp);
/* CPWriteFn that can be used to implement writes-ignored behaviour */
int arm_cp_write_ignore(CPUARMState *env, const ARMCPRegInfo *ri,
/* CPReadFn that can be used for read-as-zero behaviour */
int arm_cp_read_zero(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t *value);
-static inline bool cp_access_ok(CPUARMState *env,
+/* CPResetFn that does nothing, for use if no reset is required even
+ * if fieldoffset is non zero.
+ */
+void arm_cp_reset_ignore(CPUARMState *env, const ARMCPRegInfo *opaque);
+
+static inline bool cp_access_ok(int current_pl,
const ARMCPRegInfo *ri, int isread)
{
- return (ri->access >> ((arm_current_pl(env) * 2) + isread)) & 1;
+ return (ri->access >> ((current_pl * 2) + isread)) & 1;
}
+/**
+ * write_list_to_cpustate
+ * @cpu: ARMCPU
+ *
+ * For each register listed in the ARMCPU cpreg_indexes list, write
+ * its value from the cpreg_values list into the ARMCPUState structure.
+ * This updates TCG's working data structures from KVM data or
+ * from incoming migration state.
+ *
+ * Returns: true if all register values were updated correctly,
+ * false if some register was unknown or could not be written.
+ * Note that we do not stop early on failure -- we will attempt
+ * writing all registers in the list.
+ */
+bool write_list_to_cpustate(ARMCPU *cpu);
+
+/**
+ * write_cpustate_to_list:
+ * @cpu: ARMCPU
+ *
+ * For each register listed in the ARMCPU cpreg_indexes list, write
+ * its value from the ARMCPUState structure into the cpreg_values list.
+ * This is used to copy info from TCG's working data structures into
+ * KVM or for outbound migration.
+ *
+ * Returns: true if all register values were read correctly,
+ * false if some register was unknown or could not be read.
+ * Note that we do not stop early on failure -- we will attempt
+ * reading all registers in the list.
+ */
+bool write_cpustate_to_list(ARMCPU *cpu);
+
/* Does the core conform to the the "MicroController" profile. e.g. Cortex-M3.
Note the M in older cores (eg. ARM7TDMI) stands for Multiply. These are
conventional cores (ie. Application or Realtime profile). */
#define TARGET_PAGE_BITS 10
#endif
-#define TARGET_PHYS_ADDR_SPACE_BITS 40
-#define TARGET_VIRT_ADDR_SPACE_BITS 32
+#if defined(TARGET_AARCH64)
+# define TARGET_PHYS_ADDR_SPACE_BITS 48
+# define TARGET_VIRT_ADDR_SPACE_BITS 64
+#else
+# define TARGET_PHYS_ADDR_SPACE_BITS 40
+# define TARGET_VIRT_ADDR_SPACE_BITS 32
+#endif
static inline CPUARMState *cpu_init(const char *cpu_model)
{
#define cpu_signal_handler cpu_arm_signal_handler
#define cpu_list arm_cpu_list
-#define CPU_SAVE_VERSION 9
-
/* MMU modes definitions */
#define MMU_MODE0_SUFFIX _kernel
#define MMU_MODE1_SUFFIX _user
return (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR ? 1 : 0;
}
-#if defined(CONFIG_USER_ONLY)
-static inline void cpu_clone_regs(CPUARMState *env, target_ulong newsp)
-{
- if (newsp)
- env->regs[13] = newsp;
- env->regs[0] = 0;
-}
-#endif
+#include "exec/cpu-all.h"
-#include "cpu-all.h"
+/* Bit usage in the TB flags field: bit 31 indicates whether we are
+ * in 32 or 64 bit mode. The meaning of the other bits depends on that.
+ */
+#define ARM_TBFLAG_AARCH64_STATE_SHIFT 31
+#define ARM_TBFLAG_AARCH64_STATE_MASK (1U << ARM_TBFLAG_AARCH64_STATE_SHIFT)
-/* Bit usage in the TB flags field: */
+/* Bit usage when in AArch32 state: */
#define ARM_TBFLAG_THUMB_SHIFT 0
#define ARM_TBFLAG_THUMB_MASK (1 << ARM_TBFLAG_THUMB_SHIFT)
#define ARM_TBFLAG_VECLEN_SHIFT 1
#define ARM_TBFLAG_CONDEXEC_MASK (0xff << ARM_TBFLAG_CONDEXEC_SHIFT)
#define ARM_TBFLAG_BSWAP_CODE_SHIFT 16
#define ARM_TBFLAG_BSWAP_CODE_MASK (1 << ARM_TBFLAG_BSWAP_CODE_SHIFT)
-/* Bits 31..17 are currently unused. */
+
+/* Bit usage when in AArch64 state: currently no bits defined */
/* some convenience accessor macros */
+#define ARM_TBFLAG_AARCH64_STATE(F) \
+ (((F) & ARM_TBFLAG_AARCH64_STATE_MASK) >> ARM_TBFLAG_AARCH64_STATE_SHIFT)
#define ARM_TBFLAG_THUMB(F) \
(((F) & ARM_TBFLAG_THUMB_MASK) >> ARM_TBFLAG_THUMB_SHIFT)
#define ARM_TBFLAG_VECLEN(F) \
static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
target_ulong *cs_base, int *flags)
{
- int privmode;
- *pc = env->regs[15];
- *cs_base = 0;
- *flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
- | (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
- | (env->vfp.vec_stride << ARM_TBFLAG_VECSTRIDE_SHIFT)
- | (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT)
- | (env->bswap_code << ARM_TBFLAG_BSWAP_CODE_SHIFT);
- if (arm_feature(env, ARM_FEATURE_M)) {
- privmode = !((env->v7m.exception == 0) && (env->v7m.control & 1));
+ if (is_a64(env)) {
+ *pc = env->pc;
+ *flags = ARM_TBFLAG_AARCH64_STATE_MASK;
} else {
- privmode = (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR;
- }
- if (privmode) {
- *flags |= ARM_TBFLAG_PRIV_MASK;
- }
- if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) {
- *flags |= ARM_TBFLAG_VFPEN_MASK;
+ int privmode;
+ *pc = env->regs[15];
+ *flags = (env->thumb << ARM_TBFLAG_THUMB_SHIFT)
+ | (env->vfp.vec_len << ARM_TBFLAG_VECLEN_SHIFT)
+ | (env->vfp.vec_stride << ARM_TBFLAG_VECSTRIDE_SHIFT)
+ | (env->condexec_bits << ARM_TBFLAG_CONDEXEC_SHIFT)
+ | (env->bswap_code << ARM_TBFLAG_BSWAP_CODE_SHIFT);
+ if (arm_feature(env, ARM_FEATURE_M)) {
+ privmode = !((env->v7m.exception == 0) && (env->v7m.control & 1));
+ } else {
+ privmode = (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR;
+ }
+ if (privmode) {
+ *flags |= ARM_TBFLAG_PRIV_MASK;
+ }
+ if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) {
+ *flags |= ARM_TBFLAG_VFPEN_MASK;
+ }
}
+
+ *cs_base = 0;
}
static inline bool cpu_has_work(CPUState *cpu)
{
- CPUARMState *env = &ARM_CPU(cpu)->env;
-
- return env->interrupt_request &
+ return cpu->interrupt_request &
(CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
}
-#include "exec-all.h"
+#include "exec/exec-all.h"
static inline void cpu_pc_from_tb(CPUARMState *env, TranslationBlock *tb)
{
- env->regs[15] = tb->pc;
+ if (ARM_TBFLAG_AARCH64_STATE(tb->flags)) {
+ env->pc = tb->pc;
+ } else {
+ env->regs[15] = tb->pc;
+ }
}
/* Load an instruction and return it in the standard little-endian order */
-static inline uint32_t arm_ldl_code(CPUARMState *env, uint32_t addr,
+static inline uint32_t arm_ldl_code(CPUARMState *env, target_ulong addr,
bool do_swap)
{
uint32_t insn = cpu_ldl_code(env, addr);
}
/* Ditto, for a halfword (Thumb) instruction */
-static inline uint16_t arm_lduw_code(CPUARMState *env, uint32_t addr,
+static inline uint16_t arm_lduw_code(CPUARMState *env, target_ulong addr,
bool do_swap)
{
uint16_t insn = cpu_lduw_code(env, addr);
projects / qemu.git / blobdiff