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qemu/target/arm/cpu.h
Peter Maydell 8b0898f8dd target/arm: Allow setting the FPCR.EBF bit for FEAT_EBF16 
FEAT_EBF16 adds one new bit to the FPCR floating point control
register.  Allow this bit to be read and written when the ID
registers indicate the presence of the feature.

Note that because this new bit is not in FPSCR_FPCR_MASK the bit is
not visible in the AArch32 FPSCR, and FPSCR writes do not affect it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:35 +01:00

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/*
* ARM virtual CPU header
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ARM_CPU_H
#define ARM_CPU_H
#include "kvm-consts.h"
#include "qemu/cpu-float.h"
#include "hw/registerfields.h"
#include "cpu-qom.h"
#include "exec/cpu-defs.h"
#include "exec/gdbstub.h"
#include "exec/page-protection.h"
#include "qapi/qapi-types-common.h"
#include "target/arm/multiprocessing.h"
#include "target/arm/gtimer.h"
#ifdef TARGET_AARCH64
#define KVM_HAVE_MCE_INJECTION 1
#endif
#define EXCP_UDEF 1 /* undefined instruction */
#define EXCP_SWI 2 /* software interrupt */
#define EXCP_PREFETCH_ABORT 3
#define EXCP_DATA_ABORT 4
#define EXCP_IRQ 5
#define EXCP_FIQ 6
#define EXCP_BKPT 7
#define EXCP_EXCEPTION_EXIT 8 /* Return from v7M exception. */
#define EXCP_KERNEL_TRAP 9 /* Jumped to kernel code page. */
#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 EXCP_SEMIHOST 16 /* semihosting call */
#define EXCP_NOCP 17 /* v7M NOCP UsageFault */
#define EXCP_INVSTATE 18 /* v7M INVSTATE UsageFault */
#define EXCP_STKOF 19 /* v8M STKOF UsageFault */
#define EXCP_LAZYFP 20 /* v7M fault during lazy FP stacking */
#define EXCP_LSERR 21 /* v8M LSERR SecureFault */
#define EXCP_UNALIGNED 22 /* v7M UNALIGNED UsageFault */
#define EXCP_DIVBYZERO 23 /* v7M DIVBYZERO UsageFault */
#define EXCP_VSERR 24
#define EXCP_GPC 25 /* v9 Granule Protection Check Fault */
#define EXCP_NMI 26
#define EXCP_VINMI 27
#define EXCP_VFNMI 28
/* NB: add new EXCP_ defines to the array in arm_log_exception() too */
#define ARMV7M_EXCP_RESET 1
#define ARMV7M_EXCP_NMI 2
#define ARMV7M_EXCP_HARD 3
#define ARMV7M_EXCP_MEM 4
#define ARMV7M_EXCP_BUS 5
#define ARMV7M_EXCP_USAGE 6
#define ARMV7M_EXCP_SECURE 7
#define ARMV7M_EXCP_SVC 11
#define ARMV7M_EXCP_DEBUG 12
#define ARMV7M_EXCP_PENDSV 14
#define ARMV7M_EXCP_SYSTICK 15
/* 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
#define CPU_INTERRUPT_VSERR CPU_INTERRUPT_TGT_INT_0
#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_4
#define CPU_INTERRUPT_VINMI CPU_INTERRUPT_TGT_EXT_0
#define CPU_INTERRUPT_VFNMI CPU_INTERRUPT_TGT_INT_1
/* The usual mapping for an AArch64 system register to its AArch32
* counterpart is for the 32 bit world to have access to the lower
* half only (with writes leaving the upper half untouched). It's
* therefore useful to be able to pass TCG the offset of the least
* significant half of a uint64_t struct member.
*/
#if HOST_BIG_ENDIAN
#define offsetoflow32(S, M) (offsetof(S, M) + sizeof(uint32_t))
#define offsetofhigh32(S, M) offsetof(S, M)
#else
#define offsetoflow32(S, M) offsetof(S, M)
#define offsetofhigh32(S, M) (offsetof(S, M) + sizeof(uint32_t))
#endif
/* ARM-specific extra insn start words:
* 1: Conditional execution bits
* 2: Partial exception syndrome for data aborts
*/
#define TARGET_INSN_START_EXTRA_WORDS 2
/* The 2nd extra word holding syndrome info for data aborts does not use
* the upper 6 bits nor the lower 13 bits. We mask and shift it down to
* help the sleb128 encoder do a better job.
* When restoring the CPU state, we shift it back up.
*/
#define ARM_INSN_START_WORD2_MASK ((1 << 26) - 1)
#define ARM_INSN_START_WORD2_SHIFT 13
/* We currently assume float and double are IEEE single and double
precision respectively.
Doing runtime conversions is tricky because VFP registers may contain
integer values (eg. as the result of a FTOSI instruction).
s<2n> maps to the least significant half of d<n>
s<2n+1> maps to the most significant half of d<n>
*/
/**
* DynamicGDBFeatureInfo:
* @desc: Contains the feature descriptions.
* @data: A union with data specific to the set of registers
* @cpregs_keys: Array that contains the corresponding Key of
* a given cpreg with the same order of the cpreg
* in the XML description.
*/
typedef struct DynamicGDBFeatureInfo {
GDBFeature desc;
union {
struct {
uint32_t *keys;
} cpregs;
} data;
} DynamicGDBFeatureInfo;
/* CPU state for each instance of a generic timer (in cp15 c14) */
typedef struct ARMGenericTimer {
uint64_t cval; /* Timer CompareValue register */
uint64_t ctl; /* Timer Control register */
} ARMGenericTimer;
/* Define a maximum sized vector register.
* For 32-bit, this is a 128-bit NEON/AdvSIMD register.
* For 64-bit, this is a 2048-bit SVE register.
*
* Note that the mapping between S, D, and Q views of the register bank
* differs between AArch64 and AArch32.
* In AArch32:
* Qn = regs[n].d[1]:regs[n].d[0]
* Dn = regs[n / 2].d[n & 1]
* Sn = regs[n / 4].d[n % 4 / 2],
* bits 31..0 for even n, and bits 63..32 for odd n
* (and regs[16] to regs[31] are inaccessible)
* In AArch64:
* Zn = regs[n].d[*]
* Qn = regs[n].d[1]:regs[n].d[0]
* Dn = regs[n].d[0]
* Sn = regs[n].d[0] bits 31..0
* Hn = regs[n].d[0] bits 15..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.
*
* Align the data for use with TCG host vector operations.
*/
#ifdef TARGET_AARCH64
# define ARM_MAX_VQ 16
#else
# define ARM_MAX_VQ 1
#endif
typedef struct ARMVectorReg {
uint64_t d[2 * ARM_MAX_VQ] QEMU_ALIGNED(16);
} ARMVectorReg;
#ifdef TARGET_AARCH64
/* In AArch32 mode, predicate registers do not exist at all. */
typedef struct ARMPredicateReg {
uint64_t p[DIV_ROUND_UP(2 * ARM_MAX_VQ, 8)] QEMU_ALIGNED(16);
} ARMPredicateReg;
/* In AArch32 mode, PAC keys do not exist at all. */
typedef struct ARMPACKey {
uint64_t lo, hi;
} ARMPACKey;
#endif
/* See the commentary above the TBFLAG field definitions. */
typedef struct CPUARMTBFlags {
uint32_t flags;
target_ulong flags2;
} CPUARMTBFlags;
typedef struct ARMMMUFaultInfo ARMMMUFaultInfo;
typedef struct NVICState NVICState;
typedef struct CPUArchState {
/* 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
* DAIF (exception masks) are kept in env->daif
* BTYPE is kept in env->btype
* SM and ZA are kept in env->svcr
* all other bits are stored in their correct places in env->pstate
*/
uint32_t pstate;
bool aarch64; /* True if CPU is in aarch64 state; inverse of PSTATE.nRW */
bool thumb; /* True if CPU is in thumb mode; cpsr[5] */
/* Cached TBFLAGS state. See below for which bits are included. */
CPUARMTBFlags hflags;
/* 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 uncached_cpsr;
uint32_t spsr;
/* Banked registers. */
uint64_t banked_spsr[8];
uint32_t banked_r13[8];
uint32_t banked_r14[8];
/* These hold r8-r12. */
uint32_t usr_regs[5];
uint32_t fiq_regs[5];
/* cpsr flag cache for faster execution */
uint32_t CF; /* 0 or 1 */
uint32_t VF; /* V is the bit 31. All other bits are undefined */
uint32_t NF; /* N is bit 31. All other bits are undefined. */
uint32_t ZF; /* Z set if zero. */
uint32_t QF; /* 0 or 1 */
uint32_t GE; /* cpsr[19:16] */
uint32_t condexec_bits; /* IT bits. cpsr[15:10,26:25]. */
uint32_t btype; /* BTI branch type. spsr[11:10]. */
uint64_t daif; /* exception masks, in the bits they are in PSTATE */
uint64_t svcr; /* PSTATE.{SM,ZA} in the bits they are in SVCR */
uint64_t elr_el[4]; /* AArch64 exception link regs */
uint64_t sp_el[4]; /* AArch64 banked stack pointers */
/* System control coprocessor (cp15) */
struct {
uint32_t c0_cpuid;
union { /* Cache size selection */
struct {
uint64_t _unused_csselr0;
uint64_t csselr_ns;
uint64_t _unused_csselr1;
uint64_t csselr_s;
};
uint64_t csselr_el[4];
};
union { /* System control register. */
struct {
uint64_t _unused_sctlr;
uint64_t sctlr_ns;
uint64_t hsctlr;
uint64_t sctlr_s;
};
uint64_t sctlr_el[4];
};
uint64_t vsctlr; /* Virtualization System control register. */
uint64_t cpacr_el1; /* Architectural feature access control register */
uint64_t cptr_el[4]; /* ARMv8 feature trap registers */
uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */
uint64_t sder; /* Secure debug enable register. */
uint32_t nsacr; /* Non-secure access control register. */
union { /* MMU translation table base 0. */
struct {
uint64_t _unused_ttbr0_0;
uint64_t ttbr0_ns;
uint64_t _unused_ttbr0_1;
uint64_t ttbr0_s;
};
uint64_t ttbr0_el[4];
};
union { /* MMU translation table base 1. */
struct {
uint64_t _unused_ttbr1_0;
uint64_t ttbr1_ns;
uint64_t _unused_ttbr1_1;
uint64_t ttbr1_s;
};
uint64_t ttbr1_el[4];
};
uint64_t vttbr_el2; /* Virtualization Translation Table Base. */
uint64_t vsttbr_el2; /* Secure Virtualization Translation Table. */
/* MMU translation table base control. */
uint64_t tcr_el[4];
uint64_t vtcr_el2; /* Virtualization Translation Control. */
uint64_t vstcr_el2; /* Secure Virtualization Translation Control. */
uint32_t c2_data; /* MPU data cacheable bits. */
uint32_t c2_insn; /* MPU instruction cacheable bits. */
union { /* MMU domain access control register
* MPU write buffer control.
*/
struct {
uint64_t dacr_ns;
uint64_t dacr_s;
};
struct {
uint64_t dacr32_el2;
};
};
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 hcrx_el2; /* Extended Hypervisor configuration register */
uint64_t scr_el3; /* Secure configuration register. */
union { /* Fault status registers. */
struct {
uint64_t ifsr_ns;
uint64_t ifsr_s;
};
struct {
uint64_t ifsr32_el2;
};
};
union {
struct {
uint64_t _unused_dfsr;
uint64_t dfsr_ns;
uint64_t hsr;
uint64_t dfsr_s;
};
uint64_t esr_el[4];
};
uint32_t c6_region[8]; /* MPU base/size registers. */
union { /* Fault address registers. */
struct {
uint64_t _unused_far0;
#if HOST_BIG_ENDIAN
uint32_t ifar_ns;
uint32_t dfar_ns;
uint32_t ifar_s;
uint32_t dfar_s;
#else
uint32_t dfar_ns;
uint32_t ifar_ns;
uint32_t dfar_s;
uint32_t ifar_s;
#endif
uint64_t _unused_far3;
};
uint64_t far_el[4];
};
uint64_t hpfar_el2;
uint64_t hstr_el2;
union { /* Translation result. */
struct {
uint64_t _unused_par_0;
uint64_t par_ns;
uint64_t _unused_par_1;
uint64_t par_s;
};
uint64_t par_el[4];
};
uint32_t c9_insn; /* Cache lockdown registers. */
uint32_t c9_data;
uint64_t c9_pmcr; /* performance monitor control register */
uint64_t c9_pmcnten; /* perf monitor counter enables */
uint64_t c9_pmovsr; /* perf monitor overflow status */
uint64_t c9_pmuserenr; /* perf monitor user enable */
uint64_t c9_pmselr; /* perf monitor counter selection register */
uint64_t c9_pminten; /* perf monitor interrupt enables */
union { /* Memory attribute redirection */
struct {
#if HOST_BIG_ENDIAN
uint64_t _unused_mair_0;
uint32_t mair1_ns;
uint32_t mair0_ns;
uint64_t _unused_mair_1;
uint32_t mair1_s;
uint32_t mair0_s;
#else
uint64_t _unused_mair_0;
uint32_t mair0_ns;
uint32_t mair1_ns;
uint64_t _unused_mair_1;
uint32_t mair0_s;
uint32_t mair1_s;
#endif
};
uint64_t mair_el[4];
};
union { /* vector base address register */
struct {
uint64_t _unused_vbar;
uint64_t vbar_ns;
uint64_t hvbar;
uint64_t vbar_s;
};
uint64_t vbar_el[4];
};
uint32_t mvbar; /* (monitor) vector base address register */
uint64_t rvbar; /* rvbar sampled from rvbar property at reset */
struct { /* FCSE PID. */
uint32_t fcseidr_ns;
uint32_t fcseidr_s;
};
union { /* Context ID. */
struct {
uint64_t _unused_contextidr_0;
uint64_t contextidr_ns;
uint64_t _unused_contextidr_1;
uint64_t contextidr_s;
};
uint64_t contextidr_el[4];
};
union { /* User RW Thread register. */
struct {
uint64_t tpidrurw_ns;
uint64_t tpidrprw_ns;
uint64_t htpidr;
uint64_t _tpidr_el3;
};
uint64_t tpidr_el[4];
};
uint64_t tpidr2_el0;
/* The secure banks of these registers don't map anywhere */
uint64_t tpidrurw_s;
uint64_t tpidrprw_s;
uint64_t tpidruro_s;
union { /* User RO Thread register. */
uint64_t tpidruro_ns;
uint64_t tpidrro_el[1];
};
uint64_t c14_cntfrq; /* Counter Frequency register */
uint64_t c14_cntkctl; /* Timer Control register */
uint64_t cnthctl_el2; /* Counter/Timer Hyp Control register */
uint64_t cntvoff_el2; /* Counter Virtual Offset register */
uint64_t cntpoff_el2; /* Counter Physical Offset 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_i_min; /* Minimum D-cache dirty line index. */
uint32_t c15_threadid; /* TI debugger thread-ID. */
uint32_t c15_config_base_address; /* SCU base address. */
uint32_t c15_diagnostic; /* diagnostic register */
uint32_t c15_power_diagnostic;
uint32_t c15_power_control; /* power control */
uint64_t dbgbvr[16]; /* breakpoint value registers */
uint64_t dbgbcr[16]; /* breakpoint control registers */
uint64_t dbgwvr[16]; /* watchpoint value registers */
uint64_t dbgwcr[16]; /* watchpoint control registers */
uint64_t dbgclaim; /* DBGCLAIM bits */
uint64_t mdscr_el1;
uint64_t oslsr_el1; /* OS Lock Status */
uint64_t osdlr_el1; /* OS DoubleLock status */
uint64_t mdcr_el2;
uint64_t mdcr_el3;
/* Stores the architectural value of the counter *the last time it was
* updated* by pmccntr_op_start. Accesses should always be surrounded
* by pmccntr_op_start/pmccntr_op_finish to guarantee the latest
* architecturally-correct value is being read/set.
*/
uint64_t c15_ccnt;
/* Stores the delta between the architectural value and the underlying
* cycle count during normal operation. It is used to update c15_ccnt
* to be the correct architectural value before accesses. During
* accesses, c15_ccnt_delta contains the underlying count being used
* for the access, after which it reverts to the delta value in
* pmccntr_op_finish.
*/
uint64_t c15_ccnt_delta;
uint64_t c14_pmevcntr[31];
uint64_t c14_pmevcntr_delta[31];
uint64_t c14_pmevtyper[31];
uint64_t pmccfiltr_el0; /* Performance Monitor Filter Register */
uint64_t vpidr_el2; /* Virtualization Processor ID Register */
uint64_t vmpidr_el2; /* Virtualization Multiprocessor ID Register */
uint64_t tfsr_el[4]; /* tfsre0_el1 is index 0. */
uint64_t gcr_el1;
uint64_t rgsr_el1;
/* Minimal RAS registers */
uint64_t disr_el1;
uint64_t vdisr_el2;
uint64_t vsesr_el2;
/*
* Fine-Grained Trap registers. We store these as arrays so the
* access checking code doesn't have to manually select
* HFGRTR_EL2 vs HFDFGRTR_EL2 etc when looking up the bit to test.
* FEAT_FGT2 will add more elements to these arrays.
*/
uint64_t fgt_read[2]; /* HFGRTR, HDFGRTR */
uint64_t fgt_write[2]; /* HFGWTR, HDFGWTR */
uint64_t fgt_exec[1]; /* HFGITR */
/* RME registers */
uint64_t gpccr_el3;
uint64_t gptbr_el3;
uint64_t mfar_el3;
/* NV2 register */
uint64_t vncr_el2;
} cp15;
struct {
/* M profile has up to 4 stack pointers:
* a Main Stack Pointer and a Process Stack Pointer for each
* of the Secure and Non-Secure states. (If the CPU doesn't support
* the security extension then it has only two SPs.)
* In QEMU we always store the currently active SP in regs[13],
* and the non-active SP for the current security state in
* v7m.other_sp. The stack pointers for the inactive security state
* are stored in other_ss_msp and other_ss_psp.
* switch_v7m_security_state() is responsible for rearranging them
* when we change security state.
*/
uint32_t other_sp;
uint32_t other_ss_msp;
uint32_t other_ss_psp;
uint32_t vecbase[M_REG_NUM_BANKS];
uint32_t basepri[M_REG_NUM_BANKS];
uint32_t control[M_REG_NUM_BANKS];
uint32_t ccr[M_REG_NUM_BANKS]; /* Configuration and Control */
uint32_t cfsr[M_REG_NUM_BANKS]; /* Configurable Fault Status */
uint32_t hfsr; /* HardFault Status */
uint32_t dfsr; /* Debug Fault Status Register */
uint32_t sfsr; /* Secure Fault Status Register */
uint32_t mmfar[M_REG_NUM_BANKS]; /* MemManage Fault Address */
uint32_t bfar; /* BusFault Address */
uint32_t sfar; /* Secure Fault Address Register */
unsigned mpu_ctrl[M_REG_NUM_BANKS]; /* MPU_CTRL */
int exception;
uint32_t primask[M_REG_NUM_BANKS];
uint32_t faultmask[M_REG_NUM_BANKS];
uint32_t aircr; /* only holds r/w state if security extn implemented */
uint32_t secure; /* Is CPU in Secure state? (not guest visible) */
uint32_t csselr[M_REG_NUM_BANKS];
uint32_t scr[M_REG_NUM_BANKS];
uint32_t msplim[M_REG_NUM_BANKS];
uint32_t psplim[M_REG_NUM_BANKS];
uint32_t fpcar[M_REG_NUM_BANKS];
uint32_t fpccr[M_REG_NUM_BANKS];
uint32_t fpdscr[M_REG_NUM_BANKS];
uint32_t cpacr[M_REG_NUM_BANKS];
uint32_t nsacr;
uint32_t ltpsize;
uint32_t vpr;
} v7m;
/* Information associated with an exception about to be taken:
* code which raises an exception must set cs->exception_index and
* the relevant parts of this structure; the cpu_do_interrupt function
* will then set the guest-visible registers as part of the exception
* entry process.
*/
struct {
uint32_t syndrome; /* AArch64 format syndrome register */
uint32_t fsr; /* AArch32 format fault status register info */
uint64_t vaddress; /* virtual addr associated with exception, if any */
uint32_t target_el; /* EL the exception should be targeted for */
/* If we implement EL2 we will also need to store information
* about the intermediate physical address for stage 2 faults.
*/
} exception;
/* Information associated with an SError */
struct {
uint8_t pending;
uint8_t has_esr;
uint64_t esr;
} serror;
uint8_t ext_dabt_raised; /* Tracking/verifying injection of ext DABT */
/* State of our input IRQ/FIQ/VIRQ/VFIQ lines */
uint32_t irq_line_state;
/* Thumb-2 EE state. */
uint32_t teecr;
uint32_t teehbr;
/* VFP coprocessor state. */
struct {
ARMVectorReg zregs[32];
#ifdef TARGET_AARCH64
/* Store FFR as pregs[16] to make it easier to treat as any other. */
#define FFR_PRED_NUM 16
ARMPredicateReg pregs[17];
/* Scratch space for aa64 sve predicate temporary. */
ARMPredicateReg preg_tmp;
#endif
/* We store these fpcsr fields separately for convenience. */
uint32_t qc[4] QEMU_ALIGNED(16);
int vec_len;
int vec_stride;
/*
* Floating point status and control registers. Some bits are
* stored separately in other fields or in the float_status below.
*/
uint64_t fpsr;
uint64_t fpcr;
uint32_t xregs[16];
/* Scratch space for aa32 neon expansion. */
uint32_t scratch[8];
/* There are a number of distinct float control structures:
*
* fp_status: is the "normal" fp status.
* fp_status_fp16: used for half-precision calculations
* standard_fp_status : the ARM "Standard FPSCR Value"
* standard_fp_status_fp16 : used for half-precision
* calculations with the ARM "Standard FPSCR Value"
*
* Half-precision operations are governed by a separate
* flush-to-zero control bit in FPSCR:FZ16. We pass a separate
* status structure to control this.
*
* The "Standard FPSCR", ie default-NaN, flush-to-zero,
* round-to-nearest and is used by any operations (generally
* Neon) which the architecture defines as controlled by the
* standard FPSCR value rather than the FPSCR.
*
* The "standard FPSCR but for fp16 ops" is needed because
* the "standard FPSCR" tracks the FPSCR.FZ16 bit rather than
* using a fixed value for it.
*
* To avoid having to transfer exception bits around, we simply
* say that the FPSCR cumulative exception flags are the logical
* OR of the flags in the four fp statuses. This relies on the
* only thing which needs to read the exception flags being
* an explicit FPSCR read.
*/
float_status fp_status;
float_status fp_status_f16;
float_status standard_fp_status;
float_status standard_fp_status_f16;
uint64_t zcr_el[4]; /* ZCR_EL[1-3] */
uint64_t smcr_el[4]; /* SMCR_EL[1-3] */
} vfp;
uint64_t exclusive_addr;
uint64_t exclusive_val;
/*
* Contains the 'val' for the second 64-bit register of LDXP, which comes
* from the higher address, not the high part of a complete 128-bit value.
* In some ways it might be more convenient to record the exclusive value
* as the low and high halves of a 128 bit data value, but the current
* semantics of these fields are baked into the migration format.
*/
uint64_t exclusive_high;
/* iwMMXt coprocessor state. */
struct {
uint64_t regs[16];
uint64_t val;
uint32_t cregs[16];
} iwmmxt;
#ifdef TARGET_AARCH64
struct {
ARMPACKey apia;
ARMPACKey apib;
ARMPACKey apda;
ARMPACKey apdb;
ARMPACKey apga;
} keys;
uint64_t scxtnum_el[4];
/*
* SME ZA storage -- 256 x 256 byte array, with bytes in host word order,
* as we do with vfp.zregs[]. This corresponds to the architectural ZA
* array, where ZA[N] is in the least-significant bytes of env->zarray[N].
* When SVL is less than the architectural maximum, the accessible
* storage is restricted, such that if the SVL is X bytes the guest can
* see only the bottom X elements of zarray[], and only the least
* significant X bytes of each element of the array. (In other words,
* the observable part is always square.)
*
* The ZA storage can also be considered as a set of square tiles of
* elements of different sizes. The mapping from tiles to the ZA array
* is architecturally defined, such that for tiles of elements of esz
* bytes, the Nth row (or "horizontal slice") of tile T is in
* ZA[T + N * esz]. Note that this means that each tile is not contiguous
* in the ZA storage, because its rows are striped through the ZA array.
*
* Because this is so large, keep this toward the end of the reset area,
* to keep the offsets into the rest of the structure smaller.
*/
ARMVectorReg zarray[ARM_MAX_VQ * 16];
#endif
struct CPUBreakpoint *cpu_breakpoint[16];
struct CPUWatchpoint *cpu_watchpoint[16];
/* Optional fault info across tlb lookup. */
ARMMMUFaultInfo *tlb_fi;
/* Fields up to this point are cleared by a CPU reset */
struct {} end_reset_fields;
/* Fields after this point are preserved across CPU reset. */
/* Internal CPU feature flags. */
uint64_t features;
/* PMSAv7 MPU */
struct {
uint32_t *drbar;
uint32_t *drsr;
uint32_t *dracr;
uint32_t rnr[M_REG_NUM_BANKS];
} pmsav7;
/* PMSAv8 MPU */
struct {
/* The PMSAv8 implementation also shares some PMSAv7 config
* and state:
* pmsav7.rnr (region number register)
* pmsav7_dregion (number of configured regions)
*/
uint32_t *rbar[M_REG_NUM_BANKS];
uint32_t *rlar[M_REG_NUM_BANKS];
uint32_t *hprbar;
uint32_t *hprlar;
uint32_t mair0[M_REG_NUM_BANKS];
uint32_t mair1[M_REG_NUM_BANKS];
uint32_t hprselr;
} pmsav8;
/* v8M SAU */
struct {
uint32_t *rbar;
uint32_t *rlar;
uint32_t rnr;
uint32_t ctrl;
} sau;
#if !defined(CONFIG_USER_ONLY)
NVICState *nvic;
const struct arm_boot_info *boot_info;
/* Store GICv3CPUState to access from this struct */
void *gicv3state;
#else /* CONFIG_USER_ONLY */
/* For usermode syscall translation. */
bool eabi;
#endif /* CONFIG_USER_ONLY */
#ifdef TARGET_TAGGED_ADDRESSES
/* Linux syscall tagged address support */
bool tagged_addr_enable;
#endif
} CPUARMState;
static inline void set_feature(CPUARMState *env, int feature)
{
env->features |= 1ULL << feature;
}
static inline void unset_feature(CPUARMState *env, int feature)
{
env->features &= ~(1ULL << feature);
}
/**
* ARMELChangeHookFn:
* type of a function which can be registered via arm_register_el_change_hook()
* to get callbacks when the CPU changes its exception level or mode.
*/
typedef void ARMELChangeHookFn(ARMCPU *cpu, void *opaque);
typedef struct ARMELChangeHook ARMELChangeHook;
struct ARMELChangeHook {
ARMELChangeHookFn *hook;
void *opaque;
QLIST_ENTRY(ARMELChangeHook) node;
};
/* These values map onto the return values for
* QEMU_PSCI_0_2_FN_AFFINITY_INFO */
typedef enum ARMPSCIState {
PSCI_ON = 0,
PSCI_OFF = 1,
PSCI_ON_PENDING = 2
} ARMPSCIState;
typedef struct ARMISARegisters ARMISARegisters;
/*
* In map, each set bit is a supported vector length of (bit-number + 1) * 16
* bytes, i.e. each bit number + 1 is the vector length in quadwords.
*
* While processing properties during initialization, corresponding init bits
* are set for bits in sve_vq_map that have been set by properties.
*
* Bits set in supported represent valid vector lengths for the CPU type.
*/
typedef struct {
uint32_t map, init, supported;
} ARMVQMap;
/**
* ARMCPU:
* @env: #CPUARMState
*
* An ARM CPU core.
*/
struct ArchCPU {
CPUState parent_obj;
CPUARMState env;
/* Coprocessor information */
GHashTable *cp_regs;
/* For marshalling (mostly coprocessor) register state between the
* kernel and QEMU (for KVM) and between two QEMUs (for migration),
* we use these arrays.
*/
/* List of register indexes managed via these arrays; (full KVM style
* 64 bit indexes, not CPRegInfo 32 bit indexes)
*/
uint64_t *cpreg_indexes;
/* Values of the registers (cpreg_indexes[i]'s value is cpreg_values[i]) */
uint64_t *cpreg_values;
/* Length of the indexes, values, reset_values arrays */
int32_t cpreg_array_len;
/* These are used only for migration: incoming data arrives in
* these fields and is sanity checked in post_load before copying
* to the working data structures above.
*/
uint64_t *cpreg_vmstate_indexes;
uint64_t *cpreg_vmstate_values;
int32_t cpreg_vmstate_array_len;
DynamicGDBFeatureInfo dyn_sysreg_feature;
DynamicGDBFeatureInfo dyn_svereg_feature;
DynamicGDBFeatureInfo dyn_m_systemreg_feature;
DynamicGDBFeatureInfo dyn_m_secextreg_feature;
/* Timers used by the generic (architected) timer */
QEMUTimer *gt_timer[NUM_GTIMERS];
/*
* Timer used by the PMU. Its state is restored after migration by
* pmu_op_finish() - it does not need other handling during migration
*/
QEMUTimer *pmu_timer;
/* Timer used for WFxT timeouts */
QEMUTimer *wfxt_timer;
/* GPIO outputs for generic timer */
qemu_irq gt_timer_outputs[NUM_GTIMERS];
/* GPIO output for GICv3 maintenance interrupt signal */
qemu_irq gicv3_maintenance_interrupt;
/* GPIO output for the PMU interrupt */
qemu_irq pmu_interrupt;
/* MemoryRegion to use for secure physical accesses */
MemoryRegion *secure_memory;
/* MemoryRegion to use for allocation tag accesses */
MemoryRegion *tag_memory;
MemoryRegion *secure_tag_memory;
/* For v8M, pointer to the IDAU interface provided by board/SoC */
Object *idau;
/* 'compatible' string for this CPU for Linux device trees */
const char *dtb_compatible;
/* PSCI version for this CPU
* Bits[31:16] = Major Version
* Bits[15:0] = Minor Version
*/
uint32_t psci_version;
/* Current power state, access guarded by BQL */
ARMPSCIState power_state;
/* CPU has virtualization extension */
bool has_el2;
/* CPU has security extension */
bool has_el3;
/* CPU has PMU (Performance Monitor Unit) */
bool has_pmu;
/* CPU has VFP */
bool has_vfp;
/* CPU has 32 VFP registers */
bool has_vfp_d32;
/* CPU has Neon */
bool has_neon;
/* CPU has M-profile DSP extension */
bool has_dsp;
/* CPU has memory protection unit */
bool has_mpu;
/* PMSAv7 MPU number of supported regions */
uint32_t pmsav7_dregion;
/* PMSAv8 MPU number of supported hyp regions */
uint32_t pmsav8r_hdregion;
/* v8M SAU number of supported regions */
uint32_t sau_sregion;
/* PSCI conduit used to invoke PSCI methods
* 0 - disabled, 1 - smc, 2 - hvc
*/
uint32_t psci_conduit;
/* For v8M, initial value of the Secure VTOR */
uint32_t init_svtor;
/* For v8M, initial value of the Non-secure VTOR */
uint32_t init_nsvtor;
/* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or
* QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type.
*/
uint32_t kvm_target;
#ifdef CONFIG_KVM
/* KVM init features for this CPU */
uint32_t kvm_init_features[7];
/* KVM CPU state */
/* KVM virtual time adjustment */
bool kvm_adjvtime;
bool kvm_vtime_dirty;
uint64_t kvm_vtime;
/* KVM steal time */
OnOffAuto kvm_steal_time;
#endif /* CONFIG_KVM */
/* Uniprocessor system with MP extensions */
bool mp_is_up;
/* True if we tried kvm_arm_host_cpu_features() during CPU instance_init
* and the probe failed (so we need to report the error in realize)
*/
bool host_cpu_probe_failed;
/* QOM property to indicate we should use the back-compat CNTFRQ default */
bool backcompat_cntfrq;
/* Specify the number of cores in this CPU cluster. Used for the L2CTLR
* register.
*/
int32_t core_count;
/* The instance init functions for implementation-specific subclasses
* set these fields to specify the implementation-dependent values of
* various constant registers and reset values of non-constant
* registers.
* Some of these might become QOM properties eventually.
* Field names match the official register names as defined in the
* ARMv7AR ARM Architecture Reference Manual. A reset_ prefix
* is used for reset values of non-constant registers; no reset_
* prefix means a constant register.
* Some of these registers are split out into a substructure that
* is shared with the translators to control the ISA.
*
* Note that if you add an ID register to the ARMISARegisters struct
* you need to also update the 32-bit and 64-bit versions of the
* kvm_arm_get_host_cpu_features() function to correctly populate the
* field by reading the value from the KVM vCPU.
*/
struct ARMISARegisters {
uint32_t id_isar0;
uint32_t id_isar1;
uint32_t id_isar2;
uint32_t id_isar3;
uint32_t id_isar4;
uint32_t id_isar5;
uint32_t id_isar6;
uint32_t id_mmfr0;
uint32_t id_mmfr1;
uint32_t id_mmfr2;
uint32_t id_mmfr3;
uint32_t id_mmfr4;
uint32_t id_mmfr5;
uint32_t id_pfr0;
uint32_t id_pfr1;
uint32_t id_pfr2;
uint32_t mvfr0;
uint32_t mvfr1;
uint32_t mvfr2;
uint32_t id_dfr0;
uint32_t id_dfr1;
uint32_t dbgdidr;
uint32_t dbgdevid;
uint32_t dbgdevid1;
uint64_t id_aa64isar0;
uint64_t id_aa64isar1;
uint64_t id_aa64isar2;
uint64_t id_aa64pfr0;
uint64_t id_aa64pfr1;
uint64_t id_aa64mmfr0;
uint64_t id_aa64mmfr1;
uint64_t id_aa64mmfr2;
uint64_t id_aa64mmfr3;
uint64_t id_aa64dfr0;
uint64_t id_aa64dfr1;
uint64_t id_aa64zfr0;
uint64_t id_aa64smfr0;
uint64_t reset_pmcr_el0;
} isar;
uint64_t midr;
uint32_t revidr;
uint32_t reset_fpsid;
uint64_t ctr;
uint32_t reset_sctlr;
uint64_t pmceid0;
uint64_t pmceid1;
uint32_t id_afr0;
uint64_t id_aa64afr0;
uint64_t id_aa64afr1;
uint64_t clidr;
uint64_t mp_affinity; /* MP ID without feature bits */
/* The elements of this array are the CCSIDR values for each cache,
* in the order L1DCache, L1ICache, L2DCache, L2ICache, etc.
*/
uint64_t ccsidr[16];
uint64_t reset_cbar;
uint32_t reset_auxcr;
bool reset_hivecs;
uint8_t reset_l0gptsz;
/*
* Intermediate values used during property parsing.
* Once finalized, the values should be read from ID_AA64*.
*/
bool prop_pauth;
bool prop_pauth_impdef;
bool prop_pauth_qarma3;
bool prop_lpa2;
/* DCZ blocksize, in log_2(words), ie low 4 bits of DCZID_EL0 */
uint8_t dcz_blocksize;
/* GM blocksize, in log_2(words), ie low 4 bits of GMID_EL0 */
uint8_t gm_blocksize;
uint64_t rvbar_prop; /* Property/input signals. */
/* Configurable aspects of GIC cpu interface (which is part of the CPU) */
int gic_num_lrs; /* number of list registers */
int gic_vpribits; /* number of virtual priority bits */
int gic_vprebits; /* number of virtual preemption bits */
int gic_pribits; /* number of physical priority bits */
/* Whether the cfgend input is high (i.e. this CPU should reset into
* big-endian mode). This setting isn't used directly: instead it modifies
* the reset_sctlr value to have SCTLR_B or SCTLR_EE set, depending on the
* architecture version.
*/
bool cfgend;
QLIST_HEAD(, ARMELChangeHook) pre_el_change_hooks;
QLIST_HEAD(, ARMELChangeHook) el_change_hooks;
int32_t node_id; /* NUMA node this CPU belongs to */
/* Used to synchronize KVM and QEMU in-kernel device levels */
uint8_t device_irq_level;
/* Used to set the maximum vector length the cpu will support. */
uint32_t sve_max_vq;
#ifdef CONFIG_USER_ONLY
/* Used to set the default vector length at process start. */
uint32_t sve_default_vq;
uint32_t sme_default_vq;
#endif
ARMVQMap sve_vq;
ARMVQMap sme_vq;
/* Generic timer counter frequency, in Hz */
uint64_t gt_cntfrq_hz;
};
typedef struct ARMCPUInfo {
const char *name;
void (*initfn)(Object *obj);
void (*class_init)(ObjectClass *oc, void *data);
} ARMCPUInfo;
/**
* ARMCPUClass:
* @parent_realize: The parent class' realize handler.
* @parent_phases: The parent class' reset phase handlers.
*
* An ARM CPU model.
*/
struct ARMCPUClass {
CPUClass parent_class;
const ARMCPUInfo *info;
DeviceRealize parent_realize;
ResettablePhases parent_phases;
};
struct AArch64CPUClass {
ARMCPUClass parent_class;
};
/* Callback functions for the generic timer's timers. */
void arm_gt_ptimer_cb(void *opaque);
void arm_gt_vtimer_cb(void *opaque);
void arm_gt_htimer_cb(void *opaque);
void arm_gt_stimer_cb(void *opaque);
void arm_gt_hvtimer_cb(void *opaque);
unsigned int gt_cntfrq_period_ns(ARMCPU *cpu);
void gt_rme_post_el_change(ARMCPU *cpu, void *opaque);
void arm_cpu_post_init(Object *obj);
#define ARM_AFF0_SHIFT 0
#define ARM_AFF0_MASK (0xFFULL << ARM_AFF0_SHIFT)
#define ARM_AFF1_SHIFT 8
#define ARM_AFF1_MASK (0xFFULL << ARM_AFF1_SHIFT)
#define ARM_AFF2_SHIFT 16
#define ARM_AFF2_MASK (0xFFULL << ARM_AFF2_SHIFT)
#define ARM_AFF3_SHIFT 32
#define ARM_AFF3_MASK (0xFFULL << ARM_AFF3_SHIFT)
#define ARM_DEFAULT_CPUS_PER_CLUSTER 8
#define ARM32_AFFINITY_MASK (ARM_AFF0_MASK | ARM_AFF1_MASK | ARM_AFF2_MASK)
#define ARM64_AFFINITY_MASK \
(ARM_AFF0_MASK | ARM_AFF1_MASK | ARM_AFF2_MASK | ARM_AFF3_MASK)
#define ARM64_AFFINITY_INVALID (~ARM64_AFFINITY_MASK)
uint64_t arm_build_mp_affinity(int idx, uint8_t clustersz);
#ifndef CONFIG_USER_ONLY
extern const VMStateDescription vmstate_arm_cpu;
void arm_cpu_do_interrupt(CPUState *cpu);
void arm_v7m_cpu_do_interrupt(CPUState *cpu);
hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr,
MemTxAttrs *attrs);
#endif /* !CONFIG_USER_ONLY */
int arm_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int arm_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
int arm_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, DumpState *s);
int arm_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpuid, DumpState *s);
/**
* arm_emulate_firmware_reset: Emulate firmware CPU reset handling
* @cpu: CPU (which must have been freshly reset)
* @target_el: exception level to put the CPU into
* @secure: whether to put the CPU in secure state
*
* When QEMU is directly running a guest kernel at a lower level than
* EL3 it implicitly emulates some aspects of the guest firmware.
* This includes that on reset we need to configure the parts of the
* CPU corresponding to EL3 so that the real guest code can run at its
* lower exception level. This function does that post-reset CPU setup,
* for when we do direct boot of a guest kernel, and for when we
* emulate PSCI and similar firmware interfaces starting a CPU at a
* lower exception level.
*
* @target_el must be an EL implemented by the CPU between 1 and 3.
* We do not support dropping into a Secure EL other than 3.
*
* It is the responsibility of the caller to call arm_rebuild_hflags().
*/
void arm_emulate_firmware_reset(CPUState *cpustate, int target_el);
#ifdef TARGET_AARCH64
int aarch64_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int aarch64_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
void aarch64_sve_narrow_vq(CPUARMState *env, unsigned vq);
void aarch64_sve_change_el(CPUARMState *env, int old_el,
int new_el, bool el0_a64);
void aarch64_set_svcr(CPUARMState *env, uint64_t new, uint64_t mask);
/*
* SVE registers are encoded in KVM's memory in an endianness-invariant format.
* The byte at offset i from the start of the in-memory representation contains
* the bits [(7 + 8 * i) : (8 * i)] of the register value. As this means the
* lowest offsets are stored in the lowest memory addresses, then that nearly
* matches QEMU's representation, which is to use an array of host-endian
* uint64_t's, where the lower offsets are at the lower indices. To complete
* the translation we just need to byte swap the uint64_t's on big-endian hosts.
*/
static inline uint64_t *sve_bswap64(uint64_t *dst, uint64_t *src, int nr)
{
#if HOST_BIG_ENDIAN
int i;
for (i = 0; i < nr; ++i) {
dst[i] = bswap64(src[i]);
}
return dst;
#else
return src;
#endif
}
#else
static inline void aarch64_sve_narrow_vq(CPUARMState *env, unsigned vq) { }
static inline void aarch64_sve_change_el(CPUARMState *env, int o,
int n, bool a)
{ }
#endif
void aarch64_sync_32_to_64(CPUARMState *env);
void aarch64_sync_64_to_32(CPUARMState *env);
int fp_exception_el(CPUARMState *env, int cur_el);
int sve_exception_el(CPUARMState *env, int cur_el);
int sme_exception_el(CPUARMState *env, int cur_el);
/**
* sve_vqm1_for_el_sm:
* @env: CPUARMState
* @el: exception level
* @sm: streaming mode
*
* Compute the current vector length for @el & @sm, in units of
* Quadwords Minus 1 -- the same scale used for ZCR_ELx.LEN.
* If @sm, compute for SVL, otherwise NVL.
*/
uint32_t sve_vqm1_for_el_sm(CPUARMState *env, int el, bool sm);
/* Likewise, but using @sm = PSTATE.SM. */
uint32_t sve_vqm1_for_el(CPUARMState *env, int el);
static inline bool is_a64(CPUARMState *env)
{
return env->aarch64;
}
/**
* pmu_op_start/finish
* @env: CPUARMState
*
* Convert all PMU counters between their delta form (the typical mode when
* they are enabled) and the guest-visible values. These two calls must
* surround any action which might affect the counters.
*/
void pmu_op_start(CPUARMState *env);
void pmu_op_finish(CPUARMState *env);
/*
* Called when a PMU counter is due to overflow
*/
void arm_pmu_timer_cb(void *opaque);
/**
* Functions to register as EL change hooks for PMU mode filtering
*/
void pmu_pre_el_change(ARMCPU *cpu, void *ignored);
void pmu_post_el_change(ARMCPU *cpu, void *ignored);
/*
* pmu_init
* @cpu: ARMCPU
*
* Initialize the CPU's PMCEID[01]_EL0 registers and associated internal state
* for the current configuration
*/
void pmu_init(ARMCPU *cpu);
/* SCTLR bit meanings. Several bits have been reused in newer
* versions of the architecture; in that case we define constants
* for both old and new bit meanings. Code which tests against those
* bits should probably check or otherwise arrange that the CPU
* is the architectural version it expects.
*/
#define SCTLR_M (1U << 0)
#define SCTLR_A (1U << 1)
#define SCTLR_C (1U << 2)
#define SCTLR_W (1U << 3) /* up to v6; RAO in v7 */
#define SCTLR_nTLSMD_32 (1U << 3) /* v8.2-LSMAOC, AArch32 only */
#define SCTLR_SA (1U << 3) /* AArch64 only */
#define SCTLR_P (1U << 4) /* up to v5; RAO in v6 and v7 */
#define SCTLR_LSMAOE_32 (1U << 4) /* v8.2-LSMAOC, AArch32 only */
#define SCTLR_SA0 (1U << 4) /* v8 onward, AArch64 only */
#define SCTLR_D (1U << 5) /* up to v5; RAO in v6 */
#define SCTLR_CP15BEN (1U << 5) /* v7 onward */
#define SCTLR_L (1U << 6) /* up to v5; RAO in v6 and v7; RAZ in v8 */
#define SCTLR_nAA (1U << 6) /* when FEAT_LSE2 is implemented */
#define SCTLR_B (1U << 7) /* up to v6; RAZ in v7 */
#define SCTLR_ITD (1U << 7) /* v8 onward */
#define SCTLR_S (1U << 8) /* up to v6; RAZ in v7 */
#define SCTLR_SED (1U << 8) /* v8 onward */
#define SCTLR_R (1U << 9) /* up to v6; RAZ in v7 */
#define SCTLR_UMA (1U << 9) /* v8 onward, AArch64 only */
#define SCTLR_F (1U << 10) /* up to v6 */
#define SCTLR_SW (1U << 10) /* v7 */
#define SCTLR_EnRCTX (1U << 10) /* in v8.0-PredInv */
#define SCTLR_Z (1U << 11) /* in v7, RES1 in v8 */
#define SCTLR_EOS (1U << 11) /* v8.5-ExS */
#define SCTLR_I (1U << 12)
#define SCTLR_V (1U << 13) /* AArch32 only */
#define SCTLR_EnDB (1U << 13) /* v8.3, AArch64 only */
#define SCTLR_RR (1U << 14) /* up to v7 */
#define SCTLR_DZE (1U << 14) /* v8 onward, AArch64 only */
#define SCTLR_L4 (1U << 15) /* up to v6; RAZ in v7 */
#define SCTLR_UCT (1U << 15) /* v8 onward, AArch64 only */
#define SCTLR_DT (1U << 16) /* up to ??, RAO in v6 and v7 */
#define SCTLR_nTWI (1U << 16) /* v8 onward */
#define SCTLR_HA (1U << 17) /* up to v7, RES0 in v8 */
#define SCTLR_BR (1U << 17) /* PMSA only */
#define SCTLR_IT (1U << 18) /* up to ??, RAO in v6 and v7 */
#define SCTLR_nTWE (1U << 18) /* v8 onward */
#define SCTLR_WXN (1U << 19)
#define SCTLR_ST (1U << 20) /* up to ??, RAZ in v6 */
#define SCTLR_UWXN (1U << 20) /* v7 onward, AArch32 only */
#define SCTLR_TSCXT (1U << 20) /* FEAT_CSV2_1p2, AArch64 only */
#define SCTLR_FI (1U << 21) /* up to v7, v8 RES0 */
#define SCTLR_IESB (1U << 21) /* v8.2-IESB, AArch64 only */
#define SCTLR_U (1U << 22) /* up to v6, RAO in v7 */
#define SCTLR_EIS (1U << 22) /* v8.5-ExS */
#define SCTLR_XP (1U << 23) /* up to v6; v7 onward RAO */
#define SCTLR_SPAN (1U << 23) /* v8.1-PAN */
#define SCTLR_VE (1U << 24) /* up to v7 */
#define SCTLR_E0E (1U << 24) /* v8 onward, AArch64 only */
#define SCTLR_EE (1U << 25)
#define SCTLR_L2 (1U << 26) /* up to v6, RAZ in v7 */
#define SCTLR_UCI (1U << 26) /* v8 onward, AArch64 only */
#define SCTLR_NMFI (1U << 27) /* up to v7, RAZ in v7VE and v8 */
#define SCTLR_EnDA (1U << 27) /* v8.3, AArch64 only */
#define SCTLR_TRE (1U << 28) /* AArch32 only */
#define SCTLR_nTLSMD_64 (1U << 28) /* v8.2-LSMAOC, AArch64 only */
#define SCTLR_AFE (1U << 29) /* AArch32 only */
#define SCTLR_LSMAOE_64 (1U << 29) /* v8.2-LSMAOC, AArch64 only */
#define SCTLR_TE (1U << 30) /* AArch32 only */
#define SCTLR_EnIB (1U << 30) /* v8.3, AArch64 only */
#define SCTLR_EnIA (1U << 31) /* v8.3, AArch64 only */
#define SCTLR_DSSBS_32 (1U << 31) /* v8.5, AArch32 only */
#define SCTLR_MSCEN (1ULL << 33) /* FEAT_MOPS */
#define SCTLR_BT0 (1ULL << 35) /* v8.5-BTI */
#define SCTLR_BT1 (1ULL << 36) /* v8.5-BTI */
#define SCTLR_ITFSB (1ULL << 37) /* v8.5-MemTag */
#define SCTLR_TCF0 (3ULL << 38) /* v8.5-MemTag */
#define SCTLR_TCF (3ULL << 40) /* v8.5-MemTag */
#define SCTLR_ATA0 (1ULL << 42) /* v8.5-MemTag */
#define SCTLR_ATA (1ULL << 43) /* v8.5-MemTag */
#define SCTLR_DSSBS_64 (1ULL << 44) /* v8.5, AArch64 only */
#define SCTLR_TWEDEn (1ULL << 45) /* FEAT_TWED */
#define SCTLR_TWEDEL MAKE_64_MASK(46, 4) /* FEAT_TWED */
#define SCTLR_TMT0 (1ULL << 50) /* FEAT_TME */
#define SCTLR_TMT (1ULL << 51) /* FEAT_TME */
#define SCTLR_TME0 (1ULL << 52) /* FEAT_TME */
#define SCTLR_TME (1ULL << 53) /* FEAT_TME */
#define SCTLR_EnASR (1ULL << 54) /* FEAT_LS64_V */
#define SCTLR_EnAS0 (1ULL << 55) /* FEAT_LS64_ACCDATA */
#define SCTLR_EnALS (1ULL << 56) /* FEAT_LS64 */
#define SCTLR_EPAN (1ULL << 57) /* FEAT_PAN3 */
#define SCTLR_EnTP2 (1ULL << 60) /* FEAT_SME */
#define SCTLR_NMI (1ULL << 61) /* FEAT_NMI */
#define SCTLR_SPINTMASK (1ULL << 62) /* FEAT_NMI */
#define SCTLR_TIDCP (1ULL << 63) /* FEAT_TIDCP1 */
#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_IL (1U << 20)
#define CPSR_DIT (1U << 21)
#define CPSR_PAN (1U << 22)
#define CPSR_SSBS (1U << 23)
#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_AIF (CPSR_A | CPSR_I | CPSR_F)
#define ISR_FS (1U << 9)
#define ISR_IS (1U << 10)
#define CPSR_IT (CPSR_IT_0_1 | CPSR_IT_2_7)
#define CACHED_CPSR_BITS (CPSR_T | CPSR_AIF | CPSR_GE | CPSR_IT | CPSR_Q \
| CPSR_NZCV)
/* Bits writable in user mode. */
#define CPSR_USER (CPSR_NZCV | CPSR_Q | CPSR_GE | CPSR_E)
/* Execution state bits. MRS read as zero, MSR writes ignored. */
#define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J | CPSR_IL)
/* Bit definitions for M profile XPSR. Most are the same as CPSR. */
#define XPSR_EXCP 0x1ffU
#define XPSR_SPREALIGN (1U << 9) /* Only set in exception stack frames */
#define XPSR_IT_2_7 CPSR_IT_2_7
#define XPSR_GE CPSR_GE
#define XPSR_SFPA (1U << 20) /* Only set in exception stack frames */
#define XPSR_T (1U << 24) /* Not the same as CPSR_T ! */
#define XPSR_IT_0_1 CPSR_IT_0_1
#define XPSR_Q CPSR_Q
#define XPSR_V CPSR_V
#define XPSR_C CPSR_C
#define XPSR_Z CPSR_Z
#define XPSR_N CPSR_N
#define XPSR_NZCV CPSR_NZCV
#define XPSR_IT CPSR_IT
/* 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_SP (1U)
#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_BTYPE (3U << 10)
#define PSTATE_SSBS (1U << 12)
#define PSTATE_ALLINT (1U << 13)
#define PSTATE_IL (1U << 20)
#define PSTATE_SS (1U << 21)
#define PSTATE_PAN (1U << 22)
#define PSTATE_UAO (1U << 23)
#define PSTATE_DIT (1U << 24)
#define PSTATE_TCO (1U << 25)
#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 PSTATE_DAIF (PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F)
#define CACHED_PSTATE_BITS (PSTATE_NZCV | PSTATE_DAIF | PSTATE_BTYPE)
/* 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
/* PSTATE bits that are accessed via SVCR and not stored in SPSR_ELx. */
FIELD(SVCR, SM, 0, 1)
FIELD(SVCR, ZA, 1, 1)
/* Fields for SMCR_ELx. */
FIELD(SMCR, LEN, 0, 4)
FIELD(SMCR, FA64, 31, 1)
/* Write a new value to v7m.exception, thus transitioning into or out
* of Handler mode; this may result in a change of active stack pointer.
*/
void write_v7m_exception(CPUARMState *env, uint32_t new_exc);
/* 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.
*/
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 | env->daif | (env->btype << 10);
}
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->daif = val & PSTATE_DAIF;
env->btype = (val >> 10) & 3;
env->pstate = val & ~CACHED_PSTATE_BITS;
}
/* Return the current CPSR value. */
uint32_t cpsr_read(CPUARMState *env);
typedef enum CPSRWriteType {
CPSRWriteByInstr = 0, /* from guest MSR or CPS */
CPSRWriteExceptionReturn = 1, /* from guest exception return insn */
CPSRWriteRaw = 2,
/* trust values, no reg bank switch, no hflags rebuild */
CPSRWriteByGDBStub = 3, /* from the GDB stub */
} CPSRWriteType;
/*
* Set the CPSR. Note that some bits of mask must be all-set or all-clear.
* This will do an arm_rebuild_hflags() if any of the bits in @mask
* correspond to TB flags bits cached in the hflags, unless @write_type
* is CPSRWriteRaw.
*/
void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask,
CPSRWriteType write_type);
/* Return the current xPSR value. */
static inline uint32_t xpsr_read(CPUARMState *env)
{
int ZF;
ZF = (env->ZF == 0);
return (env->NF & 0x80000000) | (ZF << 30)
| (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27)
| (env->thumb << 24) | ((env->condexec_bits & 3) << 25)
| ((env->condexec_bits & 0xfc) << 8)
| (env->GE << 16)
| env->v7m.exception;
}
/* Set the xPSR. Note that some bits of mask must be all-set or all-clear. */
static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
{
if (mask & XPSR_NZCV) {
env->ZF = (~val) & XPSR_Z;
env->NF = val;
env->CF = (val >> 29) & 1;
env->VF = (val << 3) & 0x80000000;
}
if (mask & XPSR_Q) {
env->QF = ((val & XPSR_Q) != 0);
}
if (mask & XPSR_GE) {
env->GE = (val & XPSR_GE) >> 16;
}
#ifndef CONFIG_USER_ONLY
if (mask & XPSR_T) {
env->thumb = ((val & XPSR_T) != 0);
}
if (mask & XPSR_IT_0_1) {
env->condexec_bits &= ~3;
env->condexec_bits |= (val >> 25) & 3;
}
if (mask & XPSR_IT_2_7) {
env->condexec_bits &= 3;
env->condexec_bits |= (val >> 8) & 0xfc;
}
if (mask & XPSR_EXCP) {
/* Note that this only happens on exception exit */
write_v7m_exception(env, val & XPSR_EXCP);
}
#endif
}
#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_TPCP (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_E2H (1ULL << 34)
#define HCR_TLOR (1ULL << 35)
#define HCR_TERR (1ULL << 36)
#define HCR_TEA (1ULL << 37)
#define HCR_MIOCNCE (1ULL << 38)
#define HCR_TME (1ULL << 39)
#define HCR_APK (1ULL << 40)
#define HCR_API (1ULL << 41)
#define HCR_NV (1ULL << 42)
#define HCR_NV1 (1ULL << 43)
#define HCR_AT (1ULL << 44)
#define HCR_NV2 (1ULL << 45)
#define HCR_FWB (1ULL << 46)
#define HCR_FIEN (1ULL << 47)
#define HCR_GPF (1ULL << 48)
#define HCR_TID4 (1ULL << 49)
#define HCR_TICAB (1ULL << 50)
#define HCR_AMVOFFEN (1ULL << 51)
#define HCR_TOCU (1ULL << 52)
#define HCR_ENSCXT (1ULL << 53)
#define HCR_TTLBIS (1ULL << 54)
#define HCR_TTLBOS (1ULL << 55)
#define HCR_ATA (1ULL << 56)
#define HCR_DCT (1ULL << 57)
#define HCR_TID5 (1ULL << 58)
#define HCR_TWEDEN (1ULL << 59)
#define HCR_TWEDEL MAKE_64BIT_MASK(60, 4)
#define SCR_NS (1ULL << 0)
#define SCR_IRQ (1ULL << 1)
#define SCR_FIQ (1ULL << 2)
#define SCR_EA (1ULL << 3)
#define SCR_FW (1ULL << 4)
#define SCR_AW (1ULL << 5)
#define SCR_NET (1ULL << 6)
#define SCR_SMD (1ULL << 7)
#define SCR_HCE (1ULL << 8)
#define SCR_SIF (1ULL << 9)
#define SCR_RW (1ULL << 10)
#define SCR_ST (1ULL << 11)
#define SCR_TWI (1ULL << 12)
#define SCR_TWE (1ULL << 13)
#define SCR_TLOR (1ULL << 14)
#define SCR_TERR (1ULL << 15)
#define SCR_APK (1ULL << 16)
#define SCR_API (1ULL << 17)
#define SCR_EEL2 (1ULL << 18)
#define SCR_EASE (1ULL << 19)
#define SCR_NMEA (1ULL << 20)
#define SCR_FIEN (1ULL << 21)
#define SCR_ENSCXT (1ULL << 25)
#define SCR_ATA (1ULL << 26)
#define SCR_FGTEN (1ULL << 27)
#define SCR_ECVEN (1ULL << 28)
#define SCR_TWEDEN (1ULL << 29)
#define SCR_TWEDEL MAKE_64BIT_MASK(30, 4)
#define SCR_TME (1ULL << 34)
#define SCR_AMVOFFEN (1ULL << 35)
#define SCR_ENAS0 (1ULL << 36)
#define SCR_ADEN (1ULL << 37)
#define SCR_HXEN (1ULL << 38)
#define SCR_TRNDR (1ULL << 40)
#define SCR_ENTP2 (1ULL << 41)
#define SCR_GPF (1ULL << 48)
#define SCR_NSE (1ULL << 62)
/* Return the current FPSCR value. */
uint32_t vfp_get_fpscr(CPUARMState *env);
void vfp_set_fpscr(CPUARMState *env, uint32_t val);
/*
* FPCR, Floating Point Control Register
* FPSR, Floating Point Status Register
*
* For A64 floating point control and status bits are stored in
* two logically distinct registers, FPCR and FPSR. We store these
* in QEMU in vfp.fpcr and vfp.fpsr.
* For A32 there was only one register, FPSCR. The bits are arranged
* such that FPSCR bits map to FPCR or FPSR bits in the same bit positions,
* so we can use appropriate masking to handle FPSCR reads and writes.
* Note that the FPCR has some bits which are not visible in the
* AArch32 view (for FEAT_AFP). Writing the FPSCR leaves these unchanged.
*/
/* FPCR bits */
#define FPCR_IOE (1 << 8) /* Invalid Operation exception trap enable */
#define FPCR_DZE (1 << 9) /* Divide by Zero exception trap enable */
#define FPCR_OFE (1 << 10) /* Overflow exception trap enable */
#define FPCR_UFE (1 << 11) /* Underflow exception trap enable */
#define FPCR_IXE (1 << 12) /* Inexact exception trap enable */
#define FPCR_EBF (1 << 13) /* Extended BFloat16 behaviors */
#define FPCR_IDE (1 << 15) /* Input Denormal exception trap enable */
#define FPCR_LEN_MASK (7 << 16) /* LEN, A-profile only */
#define FPCR_FZ16 (1 << 19) /* ARMv8.2+, FP16 flush-to-zero */
#define FPCR_STRIDE_MASK (3 << 20) /* Stride */
#define FPCR_RMODE_MASK (3 << 22) /* Rounding mode */
#define FPCR_FZ (1 << 24) /* Flush-to-zero enable bit */
#define FPCR_DN (1 << 25) /* Default NaN enable bit */
#define FPCR_AHP (1 << 26) /* Alternative half-precision */
#define FPCR_LTPSIZE_SHIFT 16 /* LTPSIZE, M-profile only */
#define FPCR_LTPSIZE_MASK (7 << FPCR_LTPSIZE_SHIFT)
#define FPCR_LTPSIZE_LENGTH 3
/* Cumulative exception trap enable bits */
#define FPCR_EEXC_MASK (FPCR_IOE | FPCR_DZE | FPCR_OFE | FPCR_UFE | FPCR_IXE | FPCR_IDE)
/* FPSR bits */
#define FPSR_IOC (1 << 0) /* Invalid Operation cumulative exception */
#define FPSR_DZC (1 << 1) /* Divide by Zero cumulative exception */
#define FPSR_OFC (1 << 2) /* Overflow cumulative exception */
#define FPSR_UFC (1 << 3) /* Underflow cumulative exception */
#define FPSR_IXC (1 << 4) /* Inexact cumulative exception */
#define FPSR_IDC (1 << 7) /* Input Denormal cumulative exception */
#define FPSR_QC (1 << 27) /* Cumulative saturation bit */
#define FPSR_V (1 << 28) /* FP overflow flag */
#define FPSR_C (1 << 29) /* FP carry flag */
#define FPSR_Z (1 << 30) /* FP zero flag */
#define FPSR_N (1 << 31) /* FP negative flag */
/* Cumulative exception status bits */
#define FPSR_CEXC_MASK (FPSR_IOC | FPSR_DZC | FPSR_OFC | FPSR_UFC | FPSR_IXC | FPSR_IDC)
#define FPSR_NZCV_MASK (FPSR_N | FPSR_Z | FPSR_C | FPSR_V)
#define FPSR_NZCVQC_MASK (FPSR_NZCV_MASK | FPSR_QC)
/* A32 FPSCR bits which architecturally map to FPSR bits */
#define FPSCR_FPSR_MASK (FPSR_NZCVQC_MASK | FPSR_CEXC_MASK)
/* A32 FPSCR bits which architecturally map to FPCR bits */
#define FPSCR_FPCR_MASK (FPCR_EEXC_MASK | FPCR_LEN_MASK | FPCR_FZ16 | \
FPCR_STRIDE_MASK | FPCR_RMODE_MASK | \
FPCR_FZ | FPCR_DN | FPCR_AHP)
/* These masks don't overlap: each bit lives in only one place */
QEMU_BUILD_BUG_ON(FPSCR_FPSR_MASK & FPSCR_FPCR_MASK);
/**
* vfp_get_fpsr: read the AArch64 FPSR
* @env: CPU context
*
* Return the current AArch64 FPSR value
*/
uint32_t vfp_get_fpsr(CPUARMState *env);
/**
* vfp_get_fpcr: read the AArch64 FPCR
* @env: CPU context
*
* Return the current AArch64 FPCR value
*/
uint32_t vfp_get_fpcr(CPUARMState *env);
/**
* vfp_set_fpsr: write the AArch64 FPSR
* @env: CPU context
* @value: new value
*/
void vfp_set_fpsr(CPUARMState *env, uint32_t value);
/**
* vfp_set_fpcr: write the AArch64 FPCR
* @env: CPU context
* @value: new value
*/
void vfp_set_fpcr(CPUARMState *env, uint32_t value);
enum arm_cpu_mode {
ARM_CPU_MODE_USR = 0x10,
ARM_CPU_MODE_FIQ = 0x11,
ARM_CPU_MODE_IRQ = 0x12,
ARM_CPU_MODE_SVC = 0x13,
ARM_CPU_MODE_MON = 0x16,
ARM_CPU_MODE_ABT = 0x17,
ARM_CPU_MODE_HYP = 0x1a,
ARM_CPU_MODE_UND = 0x1b,
ARM_CPU_MODE_SYS = 0x1f
};
/* VFP system registers. */
#define ARM_VFP_FPSID 0
#define ARM_VFP_FPSCR 1
#define ARM_VFP_MVFR2 5
#define ARM_VFP_MVFR1 6
#define ARM_VFP_MVFR0 7
#define ARM_VFP_FPEXC 8
#define ARM_VFP_FPINST 9
#define ARM_VFP_FPINST2 10
/* These ones are M-profile only */
#define ARM_VFP_FPSCR_NZCVQC 2
#define ARM_VFP_VPR 12
#define ARM_VFP_P0 13
#define ARM_VFP_FPCXT_NS 14
#define ARM_VFP_FPCXT_S 15
/* QEMU-internal value meaning "FPSCR, but we care only about NZCV" */
#define QEMU_VFP_FPSCR_NZCV 0xffff
/* iwMMXt coprocessor control registers. */
#define ARM_IWMMXT_wCID 0
#define ARM_IWMMXT_wCon 1
#define ARM_IWMMXT_wCSSF 2
#define ARM_IWMMXT_wCASF 3
#define ARM_IWMMXT_wCGR0 8
#define ARM_IWMMXT_wCGR1 9
#define ARM_IWMMXT_wCGR2 10
#define ARM_IWMMXT_wCGR3 11
/* V7M CCR bits */
FIELD(V7M_CCR, NONBASETHRDENA, 0, 1)
FIELD(V7M_CCR, USERSETMPEND, 1, 1)
FIELD(V7M_CCR, UNALIGN_TRP, 3, 1)
FIELD(V7M_CCR, DIV_0_TRP, 4, 1)
FIELD(V7M_CCR, BFHFNMIGN, 8, 1)
FIELD(V7M_CCR, STKALIGN, 9, 1)
FIELD(V7M_CCR, STKOFHFNMIGN, 10, 1)
FIELD(V7M_CCR, DC, 16, 1)
FIELD(V7M_CCR, IC, 17, 1)
FIELD(V7M_CCR, BP, 18, 1)
FIELD(V7M_CCR, LOB, 19, 1)
FIELD(V7M_CCR, TRD, 20, 1)
/* V7M SCR bits */
FIELD(V7M_SCR, SLEEPONEXIT, 1, 1)
FIELD(V7M_SCR, SLEEPDEEP, 2, 1)
FIELD(V7M_SCR, SLEEPDEEPS, 3, 1)
FIELD(V7M_SCR, SEVONPEND, 4, 1)
/* V7M AIRCR bits */
FIELD(V7M_AIRCR, VECTRESET, 0, 1)
FIELD(V7M_AIRCR, VECTCLRACTIVE, 1, 1)
FIELD(V7M_AIRCR, SYSRESETREQ, 2, 1)
FIELD(V7M_AIRCR, SYSRESETREQS, 3, 1)
FIELD(V7M_AIRCR, PRIGROUP, 8, 3)
FIELD(V7M_AIRCR, BFHFNMINS, 13, 1)
FIELD(V7M_AIRCR, PRIS, 14, 1)
FIELD(V7M_AIRCR, ENDIANNESS, 15, 1)
FIELD(V7M_AIRCR, VECTKEY, 16, 16)
/* V7M CFSR bits for MMFSR */
FIELD(V7M_CFSR, IACCVIOL, 0, 1)
FIELD(V7M_CFSR, DACCVIOL, 1, 1)
FIELD(V7M_CFSR, MUNSTKERR, 3, 1)
FIELD(V7M_CFSR, MSTKERR, 4, 1)
FIELD(V7M_CFSR, MLSPERR, 5, 1)
FIELD(V7M_CFSR, MMARVALID, 7, 1)
/* V7M CFSR bits for BFSR */
FIELD(V7M_CFSR, IBUSERR, 8 + 0, 1)
FIELD(V7M_CFSR, PRECISERR, 8 + 1, 1)
FIELD(V7M_CFSR, IMPRECISERR, 8 + 2, 1)
FIELD(V7M_CFSR, UNSTKERR, 8 + 3, 1)
FIELD(V7M_CFSR, STKERR, 8 + 4, 1)
FIELD(V7M_CFSR, LSPERR, 8 + 5, 1)
FIELD(V7M_CFSR, BFARVALID, 8 + 7, 1)
/* V7M CFSR bits for UFSR */
FIELD(V7M_CFSR, UNDEFINSTR, 16 + 0, 1)
FIELD(V7M_CFSR, INVSTATE, 16 + 1, 1)
FIELD(V7M_CFSR, INVPC, 16 + 2, 1)
FIELD(V7M_CFSR, NOCP, 16 + 3, 1)
FIELD(V7M_CFSR, STKOF, 16 + 4, 1)
FIELD(V7M_CFSR, UNALIGNED, 16 + 8, 1)
FIELD(V7M_CFSR, DIVBYZERO, 16 + 9, 1)
/* V7M CFSR bit masks covering all of the subregister bits */
FIELD(V7M_CFSR, MMFSR, 0, 8)
FIELD(V7M_CFSR, BFSR, 8, 8)
FIELD(V7M_CFSR, UFSR, 16, 16)
/* V7M HFSR bits */
FIELD(V7M_HFSR, VECTTBL, 1, 1)
FIELD(V7M_HFSR, FORCED, 30, 1)
FIELD(V7M_HFSR, DEBUGEVT, 31, 1)
/* V7M DFSR bits */
FIELD(V7M_DFSR, HALTED, 0, 1)
FIELD(V7M_DFSR, BKPT, 1, 1)
FIELD(V7M_DFSR, DWTTRAP, 2, 1)
FIELD(V7M_DFSR, VCATCH, 3, 1)
FIELD(V7M_DFSR, EXTERNAL, 4, 1)
/* V7M SFSR bits */
FIELD(V7M_SFSR, INVEP, 0, 1)
FIELD(V7M_SFSR, INVIS, 1, 1)
FIELD(V7M_SFSR, INVER, 2, 1)
FIELD(V7M_SFSR, AUVIOL, 3, 1)
FIELD(V7M_SFSR, INVTRAN, 4, 1)
FIELD(V7M_SFSR, LSPERR, 5, 1)
FIELD(V7M_SFSR, SFARVALID, 6, 1)
FIELD(V7M_SFSR, LSERR, 7, 1)
/* v7M MPU_CTRL bits */
FIELD(V7M_MPU_CTRL, ENABLE, 0, 1)
FIELD(V7M_MPU_CTRL, HFNMIENA, 1, 1)
FIELD(V7M_MPU_CTRL, PRIVDEFENA, 2, 1)
/* v7M CLIDR bits */
FIELD(V7M_CLIDR, CTYPE_ALL, 0, 21)
FIELD(V7M_CLIDR, LOUIS, 21, 3)
FIELD(V7M_CLIDR, LOC, 24, 3)
FIELD(V7M_CLIDR, LOUU, 27, 3)
FIELD(V7M_CLIDR, ICB, 30, 2)
FIELD(V7M_CSSELR, IND, 0, 1)
FIELD(V7M_CSSELR, LEVEL, 1, 3)
/* We use the combination of InD and Level to index into cpu->ccsidr[];
* define a mask for this and check that it doesn't permit running off
* the end of the array.
*/
FIELD(V7M_CSSELR, INDEX, 0, 4)
/* v7M FPCCR bits */
FIELD(V7M_FPCCR, LSPACT, 0, 1)
FIELD(V7M_FPCCR, USER, 1, 1)
FIELD(V7M_FPCCR, S, 2, 1)
FIELD(V7M_FPCCR, THREAD, 3, 1)
FIELD(V7M_FPCCR, HFRDY, 4, 1)
FIELD(V7M_FPCCR, MMRDY, 5, 1)
FIELD(V7M_FPCCR, BFRDY, 6, 1)
FIELD(V7M_FPCCR, SFRDY, 7, 1)
FIELD(V7M_FPCCR, MONRDY, 8, 1)
FIELD(V7M_FPCCR, SPLIMVIOL, 9, 1)
FIELD(V7M_FPCCR, UFRDY, 10, 1)
FIELD(V7M_FPCCR, RES0, 11, 15)
FIELD(V7M_FPCCR, TS, 26, 1)
FIELD(V7M_FPCCR, CLRONRETS, 27, 1)
FIELD(V7M_FPCCR, CLRONRET, 28, 1)
FIELD(V7M_FPCCR, LSPENS, 29, 1)
FIELD(V7M_FPCCR, LSPEN, 30, 1)
FIELD(V7M_FPCCR, ASPEN, 31, 1)
/* These bits are banked. Others are non-banked and live in the M_REG_S bank */
#define R_V7M_FPCCR_BANKED_MASK \
(R_V7M_FPCCR_LSPACT_MASK | \
R_V7M_FPCCR_USER_MASK | \
R_V7M_FPCCR_THREAD_MASK | \
R_V7M_FPCCR_MMRDY_MASK | \
R_V7M_FPCCR_SPLIMVIOL_MASK | \
R_V7M_FPCCR_UFRDY_MASK | \
R_V7M_FPCCR_ASPEN_MASK)
/* v7M VPR bits */
FIELD(V7M_VPR, P0, 0, 16)
FIELD(V7M_VPR, MASK01, 16, 4)
FIELD(V7M_VPR, MASK23, 20, 4)
/*
* System register ID fields.
*/
FIELD(CLIDR_EL1, CTYPE1, 0, 3)
FIELD(CLIDR_EL1, CTYPE2, 3, 3)
FIELD(CLIDR_EL1, CTYPE3, 6, 3)
FIELD(CLIDR_EL1, CTYPE4, 9, 3)
FIELD(CLIDR_EL1, CTYPE5, 12, 3)
FIELD(CLIDR_EL1, CTYPE6, 15, 3)
FIELD(CLIDR_EL1, CTYPE7, 18, 3)
FIELD(CLIDR_EL1, LOUIS, 21, 3)
FIELD(CLIDR_EL1, LOC, 24, 3)
FIELD(CLIDR_EL1, LOUU, 27, 3)
FIELD(CLIDR_EL1, ICB, 30, 3)
/* When FEAT_CCIDX is implemented */
FIELD(CCSIDR_EL1, CCIDX_LINESIZE, 0, 3)
FIELD(CCSIDR_EL1, CCIDX_ASSOCIATIVITY, 3, 21)
FIELD(CCSIDR_EL1, CCIDX_NUMSETS, 32, 24)
/* When FEAT_CCIDX is not implemented */
FIELD(CCSIDR_EL1, LINESIZE, 0, 3)
FIELD(CCSIDR_EL1, ASSOCIATIVITY, 3, 10)
FIELD(CCSIDR_EL1, NUMSETS, 13, 15)
FIELD(CTR_EL0, IMINLINE, 0, 4)
FIELD(CTR_EL0, L1IP, 14, 2)
FIELD(CTR_EL0, DMINLINE, 16, 4)
FIELD(CTR_EL0, ERG, 20, 4)
FIELD(CTR_EL0, CWG, 24, 4)
FIELD(CTR_EL0, IDC, 28, 1)
FIELD(CTR_EL0, DIC, 29, 1)
FIELD(CTR_EL0, TMINLINE, 32, 6)
FIELD(MIDR_EL1, REVISION, 0, 4)
FIELD(MIDR_EL1, PARTNUM, 4, 12)
FIELD(MIDR_EL1, ARCHITECTURE, 16, 4)
FIELD(MIDR_EL1, VARIANT, 20, 4)
FIELD(MIDR_EL1, IMPLEMENTER, 24, 8)
FIELD(ID_ISAR0, SWAP, 0, 4)
FIELD(ID_ISAR0, BITCOUNT, 4, 4)
FIELD(ID_ISAR0, BITFIELD, 8, 4)
FIELD(ID_ISAR0, CMPBRANCH, 12, 4)
FIELD(ID_ISAR0, COPROC, 16, 4)
FIELD(ID_ISAR0, DEBUG, 20, 4)
FIELD(ID_ISAR0, DIVIDE, 24, 4)
FIELD(ID_ISAR1, ENDIAN, 0, 4)
FIELD(ID_ISAR1, EXCEPT, 4, 4)
FIELD(ID_ISAR1, EXCEPT_AR, 8, 4)
FIELD(ID_ISAR1, EXTEND, 12, 4)
FIELD(ID_ISAR1, IFTHEN, 16, 4)
FIELD(ID_ISAR1, IMMEDIATE, 20, 4)
FIELD(ID_ISAR1, INTERWORK, 24, 4)
FIELD(ID_ISAR1, JAZELLE, 28, 4)
FIELD(ID_ISAR2, LOADSTORE, 0, 4)
FIELD(ID_ISAR2, MEMHINT, 4, 4)
FIELD(ID_ISAR2, MULTIACCESSINT, 8, 4)
FIELD(ID_ISAR2, MULT, 12, 4)
FIELD(ID_ISAR2, MULTS, 16, 4)
FIELD(ID_ISAR2, MULTU, 20, 4)
FIELD(ID_ISAR2, PSR_AR, 24, 4)
FIELD(ID_ISAR2, REVERSAL, 28, 4)
FIELD(ID_ISAR3, SATURATE, 0, 4)
FIELD(ID_ISAR3, SIMD, 4, 4)
FIELD(ID_ISAR3, SVC, 8, 4)
FIELD(ID_ISAR3, SYNCHPRIM, 12, 4)
FIELD(ID_ISAR3, TABBRANCH, 16, 4)
FIELD(ID_ISAR3, T32COPY, 20, 4)
FIELD(ID_ISAR3, TRUENOP, 24, 4)
FIELD(ID_ISAR3, T32EE, 28, 4)
FIELD(ID_ISAR4, UNPRIV, 0, 4)
FIELD(ID_ISAR4, WITHSHIFTS, 4, 4)
FIELD(ID_ISAR4, WRITEBACK, 8, 4)
FIELD(ID_ISAR4, SMC, 12, 4)
FIELD(ID_ISAR4, BARRIER, 16, 4)
FIELD(ID_ISAR4, SYNCHPRIM_FRAC, 20, 4)
FIELD(ID_ISAR4, PSR_M, 24, 4)
FIELD(ID_ISAR4, SWP_FRAC, 28, 4)
FIELD(ID_ISAR5, SEVL, 0, 4)
FIELD(ID_ISAR5, AES, 4, 4)
FIELD(ID_ISAR5, SHA1, 8, 4)
FIELD(ID_ISAR5, SHA2, 12, 4)
FIELD(ID_ISAR5, CRC32, 16, 4)
FIELD(ID_ISAR5, RDM, 24, 4)
FIELD(ID_ISAR5, VCMA, 28, 4)
FIELD(ID_ISAR6, JSCVT, 0, 4)
FIELD(ID_ISAR6, DP, 4, 4)
FIELD(ID_ISAR6, FHM, 8, 4)
FIELD(ID_ISAR6, SB, 12, 4)
FIELD(ID_ISAR6, SPECRES, 16, 4)
FIELD(ID_ISAR6, BF16, 20, 4)
FIELD(ID_ISAR6, I8MM, 24, 4)
FIELD(ID_MMFR0, VMSA, 0, 4)
FIELD(ID_MMFR0, PMSA, 4, 4)
FIELD(ID_MMFR0, OUTERSHR, 8, 4)
FIELD(ID_MMFR0, SHARELVL, 12, 4)
FIELD(ID_MMFR0, TCM, 16, 4)
FIELD(ID_MMFR0, AUXREG, 20, 4)
FIELD(ID_MMFR0, FCSE, 24, 4)
FIELD(ID_MMFR0, INNERSHR, 28, 4)
FIELD(ID_MMFR1, L1HVDVA, 0, 4)
FIELD(ID_MMFR1, L1UNIVA, 4, 4)
FIELD(ID_MMFR1, L1HVDSW, 8, 4)
FIELD(ID_MMFR1, L1UNISW, 12, 4)
FIELD(ID_MMFR1, L1HVD, 16, 4)
FIELD(ID_MMFR1, L1UNI, 20, 4)
FIELD(ID_MMFR1, L1TSTCLN, 24, 4)
FIELD(ID_MMFR1, BPRED, 28, 4)
FIELD(ID_MMFR2, L1HVDFG, 0, 4)
FIELD(ID_MMFR2, L1HVDBG, 4, 4)
FIELD(ID_MMFR2, L1HVDRNG, 8, 4)
FIELD(ID_MMFR2, HVDTLB, 12, 4)
FIELD(ID_MMFR2, UNITLB, 16, 4)
FIELD(ID_MMFR2, MEMBARR, 20, 4)
FIELD(ID_MMFR2, WFISTALL, 24, 4)
FIELD(ID_MMFR2, HWACCFLG, 28, 4)
FIELD(ID_MMFR3, CMAINTVA, 0, 4)
FIELD(ID_MMFR3, CMAINTSW, 4, 4)
FIELD(ID_MMFR3, BPMAINT, 8, 4)
FIELD(ID_MMFR3, MAINTBCST, 12, 4)
FIELD(ID_MMFR3, PAN, 16, 4)
FIELD(ID_MMFR3, COHWALK, 20, 4)
FIELD(ID_MMFR3, CMEMSZ, 24, 4)
FIELD(ID_MMFR3, SUPERSEC, 28, 4)
FIELD(ID_MMFR4, SPECSEI, 0, 4)
FIELD(ID_MMFR4, AC2, 4, 4)
FIELD(ID_MMFR4, XNX, 8, 4)
FIELD(ID_MMFR4, CNP, 12, 4)
FIELD(ID_MMFR4, HPDS, 16, 4)
FIELD(ID_MMFR4, LSM, 20, 4)
FIELD(ID_MMFR4, CCIDX, 24, 4)
FIELD(ID_MMFR4, EVT, 28, 4)
FIELD(ID_MMFR5, ETS, 0, 4)
FIELD(ID_MMFR5, NTLBPA, 4, 4)
FIELD(ID_PFR0, STATE0, 0, 4)
FIELD(ID_PFR0, STATE1, 4, 4)
FIELD(ID_PFR0, STATE2, 8, 4)
FIELD(ID_PFR0, STATE3, 12, 4)
FIELD(ID_PFR0, CSV2, 16, 4)
FIELD(ID_PFR0, AMU, 20, 4)
FIELD(ID_PFR0, DIT, 24, 4)
FIELD(ID_PFR0, RAS, 28, 4)
FIELD(ID_PFR1, PROGMOD, 0, 4)
FIELD(ID_PFR1, SECURITY, 4, 4)
FIELD(ID_PFR1, MPROGMOD, 8, 4)
FIELD(ID_PFR1, VIRTUALIZATION, 12, 4)
FIELD(ID_PFR1, GENTIMER, 16, 4)
FIELD(ID_PFR1, SEC_FRAC, 20, 4)
FIELD(ID_PFR1, VIRT_FRAC, 24, 4)
FIELD(ID_PFR1, GIC, 28, 4)
FIELD(ID_PFR2, CSV3, 0, 4)
FIELD(ID_PFR2, SSBS, 4, 4)
FIELD(ID_PFR2, RAS_FRAC, 8, 4)
FIELD(ID_AA64ISAR0, AES, 4, 4)
FIELD(ID_AA64ISAR0, SHA1, 8, 4)
FIELD(ID_AA64ISAR0, SHA2, 12, 4)
FIELD(ID_AA64ISAR0, CRC32, 16, 4)
FIELD(ID_AA64ISAR0, ATOMIC, 20, 4)
FIELD(ID_AA64ISAR0, TME, 24, 4)
FIELD(ID_AA64ISAR0, RDM, 28, 4)
FIELD(ID_AA64ISAR0, SHA3, 32, 4)
FIELD(ID_AA64ISAR0, SM3, 36, 4)
FIELD(ID_AA64ISAR0, SM4, 40, 4)
FIELD(ID_AA64ISAR0, DP, 44, 4)
FIELD(ID_AA64ISAR0, FHM, 48, 4)
FIELD(ID_AA64ISAR0, TS, 52, 4)
FIELD(ID_AA64ISAR0, TLB, 56, 4)
FIELD(ID_AA64ISAR0, RNDR, 60, 4)
FIELD(ID_AA64ISAR1, DPB, 0, 4)
FIELD(ID_AA64ISAR1, APA, 4, 4)
FIELD(ID_AA64ISAR1, API, 8, 4)
FIELD(ID_AA64ISAR1, JSCVT, 12, 4)
FIELD(ID_AA64ISAR1, FCMA, 16, 4)
FIELD(ID_AA64ISAR1, LRCPC, 20, 4)
FIELD(ID_AA64ISAR1, GPA, 24, 4)
FIELD(ID_AA64ISAR1, GPI, 28, 4)
FIELD(ID_AA64ISAR1, FRINTTS, 32, 4)
FIELD(ID_AA64ISAR1, SB, 36, 4)
FIELD(ID_AA64ISAR1, SPECRES, 40, 4)
FIELD(ID_AA64ISAR1, BF16, 44, 4)
FIELD(ID_AA64ISAR1, DGH, 48, 4)
FIELD(ID_AA64ISAR1, I8MM, 52, 4)
FIELD(ID_AA64ISAR1, XS, 56, 4)
FIELD(ID_AA64ISAR1, LS64, 60, 4)
FIELD(ID_AA64ISAR2, WFXT, 0, 4)
FIELD(ID_AA64ISAR2, RPRES, 4, 4)
FIELD(ID_AA64ISAR2, GPA3, 8, 4)
FIELD(ID_AA64ISAR2, APA3, 12, 4)
FIELD(ID_AA64ISAR2, MOPS, 16, 4)
FIELD(ID_AA64ISAR2, BC, 20, 4)
FIELD(ID_AA64ISAR2, PAC_FRAC, 24, 4)
FIELD(ID_AA64ISAR2, CLRBHB, 28, 4)
FIELD(ID_AA64ISAR2, SYSREG_128, 32, 4)
FIELD(ID_AA64ISAR2, SYSINSTR_128, 36, 4)
FIELD(ID_AA64ISAR2, PRFMSLC, 40, 4)
FIELD(ID_AA64ISAR2, RPRFM, 48, 4)
FIELD(ID_AA64ISAR2, CSSC, 52, 4)
FIELD(ID_AA64ISAR2, ATS1A, 60, 4)
FIELD(ID_AA64PFR0, EL0, 0, 4)
FIELD(ID_AA64PFR0, EL1, 4, 4)
FIELD(ID_AA64PFR0, EL2, 8, 4)
FIELD(ID_AA64PFR0, EL3, 12, 4)
FIELD(ID_AA64PFR0, FP, 16, 4)
FIELD(ID_AA64PFR0, ADVSIMD, 20, 4)
FIELD(ID_AA64PFR0, GIC, 24, 4)
FIELD(ID_AA64PFR0, RAS, 28, 4)
FIELD(ID_AA64PFR0, SVE, 32, 4)
FIELD(ID_AA64PFR0, SEL2, 36, 4)
FIELD(ID_AA64PFR0, MPAM, 40, 4)
FIELD(ID_AA64PFR0, AMU, 44, 4)
FIELD(ID_AA64PFR0, DIT, 48, 4)
FIELD(ID_AA64PFR0, RME, 52, 4)
FIELD(ID_AA64PFR0, CSV2, 56, 4)
FIELD(ID_AA64PFR0, CSV3, 60, 4)
FIELD(ID_AA64PFR1, BT, 0, 4)
FIELD(ID_AA64PFR1, SSBS, 4, 4)
FIELD(ID_AA64PFR1, MTE, 8, 4)
FIELD(ID_AA64PFR1, RAS_FRAC, 12, 4)
FIELD(ID_AA64PFR1, MPAM_FRAC, 16, 4)
FIELD(ID_AA64PFR1, SME, 24, 4)
FIELD(ID_AA64PFR1, RNDR_TRAP, 28, 4)
FIELD(ID_AA64PFR1, CSV2_FRAC, 32, 4)
FIELD(ID_AA64PFR1, NMI, 36, 4)
FIELD(ID_AA64PFR1, MTE_FRAC, 40, 4)
FIELD(ID_AA64PFR1, GCS, 44, 4)
FIELD(ID_AA64PFR1, THE, 48, 4)
FIELD(ID_AA64PFR1, MTEX, 52, 4)
FIELD(ID_AA64PFR1, DF2, 56, 4)
FIELD(ID_AA64PFR1, PFAR, 60, 4)
FIELD(ID_AA64MMFR0, PARANGE, 0, 4)
FIELD(ID_AA64MMFR0, ASIDBITS, 4, 4)
FIELD(ID_AA64MMFR0, BIGEND, 8, 4)
FIELD(ID_AA64MMFR0, SNSMEM, 12, 4)
FIELD(ID_AA64MMFR0, BIGENDEL0, 16, 4)
FIELD(ID_AA64MMFR0, TGRAN16, 20, 4)
FIELD(ID_AA64MMFR0, TGRAN64, 24, 4)
FIELD(ID_AA64MMFR0, TGRAN4, 28, 4)
FIELD(ID_AA64MMFR0, TGRAN16_2, 32, 4)
FIELD(ID_AA64MMFR0, TGRAN64_2, 36, 4)
FIELD(ID_AA64MMFR0, TGRAN4_2, 40, 4)
FIELD(ID_AA64MMFR0, EXS, 44, 4)
FIELD(ID_AA64MMFR0, FGT, 56, 4)
FIELD(ID_AA64MMFR0, ECV, 60, 4)
FIELD(ID_AA64MMFR1, HAFDBS, 0, 4)
FIELD(ID_AA64MMFR1, VMIDBITS, 4, 4)
FIELD(ID_AA64MMFR1, VH, 8, 4)
FIELD(ID_AA64MMFR1, HPDS, 12, 4)
FIELD(ID_AA64MMFR1, LO, 16, 4)
FIELD(ID_AA64MMFR1, PAN, 20, 4)
FIELD(ID_AA64MMFR1, SPECSEI, 24, 4)
FIELD(ID_AA64MMFR1, XNX, 28, 4)
FIELD(ID_AA64MMFR1, TWED, 32, 4)
FIELD(ID_AA64MMFR1, ETS, 36, 4)
FIELD(ID_AA64MMFR1, HCX, 40, 4)
FIELD(ID_AA64MMFR1, AFP, 44, 4)
FIELD(ID_AA64MMFR1, NTLBPA, 48, 4)
FIELD(ID_AA64MMFR1, TIDCP1, 52, 4)
FIELD(ID_AA64MMFR1, CMOW, 56, 4)
FIELD(ID_AA64MMFR1, ECBHB, 60, 4)
FIELD(ID_AA64MMFR2, CNP, 0, 4)
FIELD(ID_AA64MMFR2, UAO, 4, 4)
FIELD(ID_AA64MMFR2, LSM, 8, 4)
FIELD(ID_AA64MMFR2, IESB, 12, 4)
FIELD(ID_AA64MMFR2, VARANGE, 16, 4)
FIELD(ID_AA64MMFR2, CCIDX, 20, 4)
FIELD(ID_AA64MMFR2, NV, 24, 4)
FIELD(ID_AA64MMFR2, ST, 28, 4)
FIELD(ID_AA64MMFR2, AT, 32, 4)
FIELD(ID_AA64MMFR2, IDS, 36, 4)
FIELD(ID_AA64MMFR2, FWB, 40, 4)
FIELD(ID_AA64MMFR2, TTL, 48, 4)
FIELD(ID_AA64MMFR2, BBM, 52, 4)
FIELD(ID_AA64MMFR2, EVT, 56, 4)
FIELD(ID_AA64MMFR2, E0PD, 60, 4)
FIELD(ID_AA64MMFR3, TCRX, 0, 4)
FIELD(ID_AA64MMFR3, SCTLRX, 4, 4)
FIELD(ID_AA64MMFR3, S1PIE, 8, 4)
FIELD(ID_AA64MMFR3, S2PIE, 12, 4)
FIELD(ID_AA64MMFR3, S1POE, 16, 4)
FIELD(ID_AA64MMFR3, S2POE, 20, 4)
FIELD(ID_AA64MMFR3, AIE, 24, 4)
FIELD(ID_AA64MMFR3, MEC, 28, 4)
FIELD(ID_AA64MMFR3, D128, 32, 4)
FIELD(ID_AA64MMFR3, D128_2, 36, 4)
FIELD(ID_AA64MMFR3, SNERR, 40, 4)
FIELD(ID_AA64MMFR3, ANERR, 44, 4)
FIELD(ID_AA64MMFR3, SDERR, 52, 4)
FIELD(ID_AA64MMFR3, ADERR, 56, 4)
FIELD(ID_AA64MMFR3, SPEC_FPACC, 60, 4)
FIELD(ID_AA64DFR0, DEBUGVER, 0, 4)
FIELD(ID_AA64DFR0, TRACEVER, 4, 4)
FIELD(ID_AA64DFR0, PMUVER, 8, 4)
FIELD(ID_AA64DFR0, BRPS, 12, 4)
FIELD(ID_AA64DFR0, PMSS, 16, 4)
FIELD(ID_AA64DFR0, WRPS, 20, 4)
FIELD(ID_AA64DFR0, SEBEP, 24, 4)
FIELD(ID_AA64DFR0, CTX_CMPS, 28, 4)
FIELD(ID_AA64DFR0, PMSVER, 32, 4)
FIELD(ID_AA64DFR0, DOUBLELOCK, 36, 4)
FIELD(ID_AA64DFR0, TRACEFILT, 40, 4)
FIELD(ID_AA64DFR0, TRACEBUFFER, 44, 4)
FIELD(ID_AA64DFR0, MTPMU, 48, 4)
FIELD(ID_AA64DFR0, BRBE, 52, 4)
FIELD(ID_AA64DFR0, EXTTRCBUFF, 56, 4)
FIELD(ID_AA64DFR0, HPMN0, 60, 4)
FIELD(ID_AA64ZFR0, SVEVER, 0, 4)
FIELD(ID_AA64ZFR0, AES, 4, 4)
FIELD(ID_AA64ZFR0, BITPERM, 16, 4)
FIELD(ID_AA64ZFR0, BFLOAT16, 20, 4)
FIELD(ID_AA64ZFR0, B16B16, 24, 4)
FIELD(ID_AA64ZFR0, SHA3, 32, 4)
FIELD(ID_AA64ZFR0, SM4, 40, 4)
FIELD(ID_AA64ZFR0, I8MM, 44, 4)
FIELD(ID_AA64ZFR0, F32MM, 52, 4)
FIELD(ID_AA64ZFR0, F64MM, 56, 4)
FIELD(ID_AA64SMFR0, F32F32, 32, 1)
FIELD(ID_AA64SMFR0, BI32I32, 33, 1)
FIELD(ID_AA64SMFR0, B16F32, 34, 1)
FIELD(ID_AA64SMFR0, F16F32, 35, 1)
FIELD(ID_AA64SMFR0, I8I32, 36, 4)
FIELD(ID_AA64SMFR0, F16F16, 42, 1)
FIELD(ID_AA64SMFR0, B16B16, 43, 1)
FIELD(ID_AA64SMFR0, I16I32, 44, 4)
FIELD(ID_AA64SMFR0, F64F64, 48, 1)
FIELD(ID_AA64SMFR0, I16I64, 52, 4)
FIELD(ID_AA64SMFR0, SMEVER, 56, 4)
FIELD(ID_AA64SMFR0, FA64, 63, 1)
FIELD(ID_DFR0, COPDBG, 0, 4)
FIELD(ID_DFR0, COPSDBG, 4, 4)
FIELD(ID_DFR0, MMAPDBG, 8, 4)
FIELD(ID_DFR0, COPTRC, 12, 4)
FIELD(ID_DFR0, MMAPTRC, 16, 4)
FIELD(ID_DFR0, MPROFDBG, 20, 4)
FIELD(ID_DFR0, PERFMON, 24, 4)
FIELD(ID_DFR0, TRACEFILT, 28, 4)
FIELD(ID_DFR1, MTPMU, 0, 4)
FIELD(ID_DFR1, HPMN0, 4, 4)
FIELD(DBGDIDR, SE_IMP, 12, 1)
FIELD(DBGDIDR, NSUHD_IMP, 14, 1)
FIELD(DBGDIDR, VERSION, 16, 4)
FIELD(DBGDIDR, CTX_CMPS, 20, 4)
FIELD(DBGDIDR, BRPS, 24, 4)
FIELD(DBGDIDR, WRPS, 28, 4)
FIELD(DBGDEVID, PCSAMPLE, 0, 4)
FIELD(DBGDEVID, WPADDRMASK, 4, 4)
FIELD(DBGDEVID, BPADDRMASK, 8, 4)
FIELD(DBGDEVID, VECTORCATCH, 12, 4)
FIELD(DBGDEVID, VIRTEXTNS, 16, 4)
FIELD(DBGDEVID, DOUBLELOCK, 20, 4)
FIELD(DBGDEVID, AUXREGS, 24, 4)
FIELD(DBGDEVID, CIDMASK, 28, 4)
FIELD(DBGDEVID1, PCSROFFSET, 0, 4)
FIELD(MVFR0, SIMDREG, 0, 4)
FIELD(MVFR0, FPSP, 4, 4)
FIELD(MVFR0, FPDP, 8, 4)
FIELD(MVFR0, FPTRAP, 12, 4)
FIELD(MVFR0, FPDIVIDE, 16, 4)
FIELD(MVFR0, FPSQRT, 20, 4)
FIELD(MVFR0, FPSHVEC, 24, 4)
FIELD(MVFR0, FPROUND, 28, 4)
FIELD(MVFR1, FPFTZ, 0, 4)
FIELD(MVFR1, FPDNAN, 4, 4)
FIELD(MVFR1, SIMDLS, 8, 4) /* A-profile only */
FIELD(MVFR1, SIMDINT, 12, 4) /* A-profile only */
FIELD(MVFR1, SIMDSP, 16, 4) /* A-profile only */
FIELD(MVFR1, SIMDHP, 20, 4) /* A-profile only */
FIELD(MVFR1, MVE, 8, 4) /* M-profile only */
FIELD(MVFR1, FP16, 20, 4) /* M-profile only */
FIELD(MVFR1, FPHP, 24, 4)
FIELD(MVFR1, SIMDFMAC, 28, 4)
FIELD(MVFR2, SIMDMISC, 0, 4)
FIELD(MVFR2, FPMISC, 4, 4)
FIELD(GPCCR, PPS, 0, 3)
FIELD(GPCCR, IRGN, 8, 2)
FIELD(GPCCR, ORGN, 10, 2)
FIELD(GPCCR, SH, 12, 2)
FIELD(GPCCR, PGS, 14, 2)
FIELD(GPCCR, GPC, 16, 1)
FIELD(GPCCR, GPCP, 17, 1)
FIELD(GPCCR, L0GPTSZ, 20, 4)
FIELD(MFAR, FPA, 12, 40)
FIELD(MFAR, NSE, 62, 1)
FIELD(MFAR, NS, 63, 1)
QEMU_BUILD_BUG_ON(ARRAY_SIZE(((ARMCPU *)0)->ccsidr) <= R_V7M_CSSELR_INDEX_MASK);
/* If adding a feature bit which corresponds to a Linux ELF
* HWCAP bit, remember to update the feature-bit-to-hwcap
* mapping in linux-user/elfload.c:get_elf_hwcap().
*/
enum arm_features {
ARM_FEATURE_AUXCR, /* ARM1026 Auxiliary control register. */
ARM_FEATURE_XSCALE, /* Intel XScale extensions. */
ARM_FEATURE_IWMMXT, /* Intel iwMMXt extension. */
ARM_FEATURE_V6,
ARM_FEATURE_V6K,
ARM_FEATURE_V7,
ARM_FEATURE_THUMB2,
ARM_FEATURE_PMSA, /* no MMU; may have Memory Protection Unit */
ARM_FEATURE_NEON,
ARM_FEATURE_M, /* Microcontroller profile. */
ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling. */
ARM_FEATURE_THUMB2EE,
ARM_FEATURE_V7MP, /* v7 Multiprocessing Extensions */
ARM_FEATURE_V7VE, /* v7 Virtualization Extensions (non-EL2 parts) */
ARM_FEATURE_V4T,
ARM_FEATURE_V5,
ARM_FEATURE_STRONGARM,
ARM_FEATURE_VAPA, /* cp15 VA to PA lookups */
ARM_FEATURE_GENERIC_TIMER,
ARM_FEATURE_MVFR, /* Media and VFP Feature Registers 0 and 1 */
ARM_FEATURE_DUMMY_C15_REGS, /* RAZ/WI all of cp15 crn=15 */
ARM_FEATURE_CACHE_TEST_CLEAN, /* 926/1026 style test-and-clean ops */
ARM_FEATURE_CACHE_DIRTY_REG, /* 1136/1176 cache dirty status register */
ARM_FEATURE_CACHE_BLOCK_OPS, /* v6 optional cache block operations */
ARM_FEATURE_MPIDR, /* has cp15 MPIDR */
ARM_FEATURE_LPAE, /* has Large Physical Address Extension */
ARM_FEATURE_V8,
ARM_FEATURE_AARCH64, /* supports 64 bit mode */
ARM_FEATURE_CBAR, /* has cp15 CBAR */
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_THUMB_DSP, /* DSP insns supported in the Thumb encodings */
ARM_FEATURE_PMU, /* has PMU support */
ARM_FEATURE_VBAR, /* has cp15 VBAR */
ARM_FEATURE_M_SECURITY, /* M profile Security Extension */
ARM_FEATURE_M_MAIN, /* M profile Main Extension */
ARM_FEATURE_V8_1M, /* M profile extras only in v8.1M and later */
/*
* ARM_FEATURE_BACKCOMPAT_CNTFRQ makes the CPU default cntfrq be 62.5MHz
* if the board doesn't set a value, instead of 1GHz. It is for backwards
* compatibility and used only with CPU definitions that were already
* in QEMU before we changed the default. It should not be set on any
* CPU types added in future.
*/
ARM_FEATURE_BACKCOMPAT_CNTFRQ, /* 62.5MHz timer default */
};
static inline int arm_feature(CPUARMState *env, int feature)
{
return (env->features & (1ULL << feature)) != 0;
}
void arm_cpu_finalize_features(ARMCPU *cpu, Error **errp);
/*
* ARM v9 security states.
* The ordering of the enumeration corresponds to the low 2 bits
* of the GPI value, and (except for Root) the concat of NSE:NS.
*/
typedef enum ARMSecuritySpace {
ARMSS_Secure = 0,
ARMSS_NonSecure = 1,
ARMSS_Root = 2,
ARMSS_Realm = 3,
} ARMSecuritySpace;
/* Return true if @space is secure, in the pre-v9 sense. */
static inline bool arm_space_is_secure(ARMSecuritySpace space)
{
return space == ARMSS_Secure || space == ARMSS_Root;
}
/* Return the ARMSecuritySpace for @secure, assuming !RME or EL[0-2]. */
static inline ARMSecuritySpace arm_secure_to_space(bool secure)
{
return secure ? ARMSS_Secure : ARMSS_NonSecure;
}
#if !defined(CONFIG_USER_ONLY)
/**
* arm_security_space_below_el3:
* @env: cpu context
*
* Return the security space of exception levels below EL3, following
* an exception return to those levels. Unlike arm_security_space,
* this doesn't care about the current EL.
*/
ARMSecuritySpace arm_security_space_below_el3(CPUARMState *env);
/**
* arm_is_secure_below_el3:
* @env: cpu context
*
* Return true if exception levels below EL3 are in secure state,
* or would be following an exception return to those levels.
*/
static inline bool arm_is_secure_below_el3(CPUARMState *env)
{
ARMSecuritySpace ss = arm_security_space_below_el3(env);
return ss == ARMSS_Secure;
}
/* Return true if the CPU is AArch64 EL3 or AArch32 Mon */
static inline bool arm_is_el3_or_mon(CPUARMState *env)
{
assert(!arm_feature(env, ARM_FEATURE_M));
if (arm_feature(env, ARM_FEATURE_EL3)) {
if (is_a64(env) && extract32(env->pstate, 2, 2) == 3) {
/* CPU currently in AArch64 state and EL3 */
return true;
} else if (!is_a64(env) &&
(env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) {
/* CPU currently in AArch32 state and monitor mode */
return true;
}
}
return false;
}
/**
* arm_security_space:
* @env: cpu context
*
* Return the current security space of the cpu.
*/
ARMSecuritySpace arm_security_space(CPUARMState *env);
/**
* arm_is_secure:
* @env: cpu context
*
* Return true if the processor is in secure state.
*/
static inline bool arm_is_secure(CPUARMState *env)
{
return arm_space_is_secure(arm_security_space(env));
}
/*
* Return true if the current security state has AArch64 EL2 or AArch32 Hyp.
* This corresponds to the pseudocode EL2Enabled().
*/
static inline bool arm_is_el2_enabled_secstate(CPUARMState *env,
ARMSecuritySpace space)
{
assert(space != ARMSS_Root);
return arm_feature(env, ARM_FEATURE_EL2)
&& (space != ARMSS_Secure || (env->cp15.scr_el3 & SCR_EEL2));
}
static inline bool arm_is_el2_enabled(CPUARMState *env)
{
return arm_is_el2_enabled_secstate(env, arm_security_space_below_el3(env));
}
#else
static inline ARMSecuritySpace arm_security_space_below_el3(CPUARMState *env)
{
return ARMSS_NonSecure;
}
static inline bool arm_is_secure_below_el3(CPUARMState *env)
{
return false;
}
static inline ARMSecuritySpace arm_security_space(CPUARMState *env)
{
return ARMSS_NonSecure;
}
static inline bool arm_is_secure(CPUARMState *env)
{
return false;
}
static inline bool arm_is_el2_enabled_secstate(CPUARMState *env,
ARMSecuritySpace space)
{
return false;
}
static inline bool arm_is_el2_enabled(CPUARMState *env)
{
return false;
}
#endif
/**
* arm_hcr_el2_eff(): Return the effective value of HCR_EL2.
* E.g. when in secure state, fields in HCR_EL2 are suppressed,
* "for all purposes other than a direct read or write access of HCR_EL2."
* Not included here is HCR_RW.
*/
uint64_t arm_hcr_el2_eff_secstate(CPUARMState *env, ARMSecuritySpace space);
uint64_t arm_hcr_el2_eff(CPUARMState *env);
uint64_t arm_hcrx_el2_eff(CPUARMState *env);
/* Return true if the specified exception level is running in AArch64 state. */
static inline bool arm_el_is_aa64(CPUARMState *env, int el)
{
/* This isn't valid for EL0 (if we're in EL0, is_a64() is what you want,
* and if we're not in EL0 then the state of EL0 isn't well defined.)
*/
assert(el >= 1 && el <= 3);
bool aa64 = arm_feature(env, ARM_FEATURE_AARCH64);
/* The highest exception level is always at the maximum supported
* register width, and then lower levels have a register width controlled
* by bits in the SCR or HCR registers.
*/
if (el == 3) {
return aa64;
}
if (arm_feature(env, ARM_FEATURE_EL3) &&
((env->cp15.scr_el3 & SCR_NS) || !(env->cp15.scr_el3 & SCR_EEL2))) {
aa64 = aa64 && (env->cp15.scr_el3 & SCR_RW);
}
if (el == 2) {
return aa64;
}
if (arm_is_el2_enabled(env)) {
aa64 = aa64 && (env->cp15.hcr_el2 & HCR_RW);
}
return aa64;
}
/* Function for determining whether guest cp register reads and writes should
* access the secure or non-secure bank of a cp register. When EL3 is
* operating in AArch32 state, the NS-bit determines whether the secure
* instance of a cp register should be used. When EL3 is AArch64 (or if
* it doesn't exist at all) then there is no register banking, and all
* accesses are to the non-secure version.
*/
static inline bool access_secure_reg(CPUARMState *env)
{
bool ret = (arm_feature(env, ARM_FEATURE_EL3) &&
!arm_el_is_aa64(env, 3) &&
!(env->cp15.scr_el3 & SCR_NS));
return ret;
}
/* Macros for accessing a specified CP register bank */
#define A32_BANKED_REG_GET(_env, _regname, _secure) \
((_secure) ? (_env)->cp15._regname##_s : (_env)->cp15._regname##_ns)
#define A32_BANKED_REG_SET(_env, _regname, _secure, _val) \
do { \
if (_secure) { \
(_env)->cp15._regname##_s = (_val); \
} else { \
(_env)->cp15._regname##_ns = (_val); \
} \
} while (0)
/* Macros for automatically accessing a specific CP register bank depending on
* the current secure state of the system. These macros are not intended for
* supporting instruction translation reads/writes as these are dependent
* solely on the SCR.NS bit and not the mode.
*/
#define A32_BANKED_CURRENT_REG_GET(_env, _regname) \
A32_BANKED_REG_GET((_env), _regname, \
(arm_is_secure(_env) && !arm_el_is_aa64((_env), 3)))
#define A32_BANKED_CURRENT_REG_SET(_env, _regname, _val) \
A32_BANKED_REG_SET((_env), _regname, \
(arm_is_secure(_env) && !arm_el_is_aa64((_env), 3)), \
(_val))
uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx,
uint32_t cur_el, bool secure);
/* Return the highest implemented Exception Level */
static inline int arm_highest_el(CPUARMState *env)
{
if (arm_feature(env, ARM_FEATURE_EL3)) {
return 3;
}
if (arm_feature(env, ARM_FEATURE_EL2)) {
return 2;
}
return 1;
}
/* Return true if a v7M CPU is in Handler mode */
static inline bool arm_v7m_is_handler_mode(CPUARMState *env)
{
return env->v7m.exception != 0;
}
/* Return the current Exception Level (as per ARMv8; note that this differs
* from the ARMv7 Privilege Level).
*/
static inline int arm_current_el(CPUARMState *env)
{
if (arm_feature(env, ARM_FEATURE_M)) {
return arm_v7m_is_handler_mode(env) ||
!(env->v7m.control[env->v7m.secure] & 1);
}
if (is_a64(env)) {
return extract32(env->pstate, 2, 2);
}
switch (env->uncached_cpsr & 0x1f) {
case ARM_CPU_MODE_USR:
return 0;
case ARM_CPU_MODE_HYP:
return 2;
case ARM_CPU_MODE_MON:
return 3;
default:
if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) {
/* If EL3 is 32-bit then all secure privileged modes run in
* EL3
*/
return 3;
}
return 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
* @kvm_sync: true if this is for syncing back to KVM
*
* 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.
*
* @kvm_sync is true if we are doing this in order to sync the
* register state back to KVM. In this case we will only update
* values in the list if the previous list->cpustate sync actually
* successfully wrote the CPU state. Otherwise we will keep the value
* that is in the list.
*
* 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, bool kvm_sync);
#define ARM_CPUID_TI915T 0x54029152
#define ARM_CPUID_TI925T 0x54029252
#define CPU_RESOLVING_TYPE TYPE_ARM_CPU
#define TYPE_ARM_HOST_CPU "host-" TYPE_ARM_CPU
/* ARM has the following "translation regimes" (as the ARM ARM calls them):
*
* If EL3 is 64-bit:
* + NonSecure EL1 & 0 stage 1
* + NonSecure EL1 & 0 stage 2
* + NonSecure EL2
* + NonSecure EL2 & 0 (ARMv8.1-VHE)
* + Secure EL1 & 0 stage 1
* + Secure EL1 & 0 stage 2 (FEAT_SEL2)
* + Secure EL2 (FEAT_SEL2)
* + Secure EL2 & 0 (FEAT_SEL2)
* + Realm EL1 & 0 stage 1 (FEAT_RME)
* + Realm EL1 & 0 stage 2 (FEAT_RME)
* + Realm EL2 (FEAT_RME)
* + EL3
* If EL3 is 32-bit:
* + NonSecure PL1 & 0 stage 1
* + NonSecure PL1 & 0 stage 2
* + NonSecure PL2
* + Secure PL1 & 0
* (reminder: for 32 bit EL3, Secure PL1 is *EL3*, not EL1.)
*
* For QEMU, an mmu_idx is not quite the same as a translation regime because:
* 1. we need to split the "EL1 & 0" and "EL2 & 0" regimes into two mmu_idxes,
* because they may differ in access permissions even if the VA->PA map is
* the same
* 2. we want to cache in our TLB the full VA->IPA->PA lookup for a stage 1+2
* translation, which means that we have one mmu_idx that deals with two
* concatenated translation regimes [this sort of combined s1+2 TLB is
* architecturally permitted]
* 3. we don't need to allocate an mmu_idx to translations that we won't be
* handling via the TLB. The only way to do a stage 1 translation without
* the immediate stage 2 translation is via the ATS or AT system insns,
* which can be slow-pathed and always do a page table walk.
* The only use of stage 2 translations is either as part of an s1+2
* lookup or when loading the descriptors during a stage 1 page table walk,
* and in both those cases we don't use the TLB.
* 4. we want to be able to use the TLB for accesses done as part of a
* stage1 page table walk, rather than having to walk the stage2 page
* table over and over.
* 5. we need separate EL1/EL2 mmu_idx for handling the Privileged Access
* Never (PAN) bit within PSTATE.
* 6. we fold together most secure and non-secure regimes for A-profile,
* because there are no banked system registers for aarch64, so the
* process of switching between secure and non-secure is
* already heavyweight.
* 7. we cannot fold together Stage 2 Secure and Stage 2 NonSecure,
* because both are in use simultaneously for Secure EL2.
*
* This gives us the following list of cases:
*
* EL0 EL1&0 stage 1+2 (or AArch32 PL0 PL1&0 stage 1+2)
* EL1 EL1&0 stage 1+2 (or AArch32 PL1 PL1&0 stage 1+2)
* EL1 EL1&0 stage 1+2 +PAN (or AArch32 PL1 PL1&0 stage 1+2 +PAN)
* EL0 EL2&0
* EL2 EL2&0
* EL2 EL2&0 +PAN
* EL2 (aka NS PL2)
* EL3 (not used when EL3 is AArch32)
* Stage2 Secure
* Stage2 NonSecure
* plus one TLB per Physical address space: S, NS, Realm, Root
*
* for a total of 14 different mmu_idx.
*
* Note that when EL3 is AArch32, the usage is potentially confusing
* because the MMU indexes are named for their AArch64 use, so code
* using the ARMMMUIdx_E10_1 might be at EL3, not EL1. This is because
* Secure PL1 is always at EL3.
*
* R profile CPUs have an MPU, but can use the same set of MMU indexes
* as A profile. They only need to distinguish EL0 and EL1 (and
* EL2 for cores like the Cortex-R52).
*
* M profile CPUs are rather different as they do not have a true MMU.
* They have the following different MMU indexes:
* User
* Privileged
* User, execution priority negative (ie the MPU HFNMIENA bit may apply)
* Privileged, execution priority negative (ditto)
* If the CPU supports the v8M Security Extension then there are also:
* Secure User
* Secure Privileged
* Secure User, execution priority negative
* Secure Privileged, execution priority negative
*
* The ARMMMUIdx and the mmu index value used by the core QEMU TLB code
* are not quite the same -- different CPU types (most notably M profile
* vs A/R profile) would like to use MMU indexes with different semantics,
* but since we don't ever need to use all of those in a single CPU we
* can avoid having to set NB_MMU_MODES to "total number of A profile MMU
* modes + total number of M profile MMU modes". The lower bits of
* ARMMMUIdx are the core TLB mmu index, and the higher bits are always
* the same for any particular CPU.
* Variables of type ARMMUIdx are always full values, and the core
* index values are in variables of type 'int'.
*
* Our enumeration includes at the end some entries which are not "true"
* mmu_idx values in that they don't have corresponding TLBs and are only
* valid for doing slow path page table walks.
*
* The constant names here are patterned after the general style of the names
* of the AT/ATS operations.
* The values used are carefully arranged to make mmu_idx => EL lookup easy.
* For M profile we arrange them to have a bit for priv, a bit for negpri
* and a bit for secure.
*/
#define ARM_MMU_IDX_A 0x10 /* A profile */
#define ARM_MMU_IDX_NOTLB 0x20 /* does not have a TLB */
#define ARM_MMU_IDX_M 0x40 /* M profile */
/* Meanings of the bits for M profile mmu idx values */
#define ARM_MMU_IDX_M_PRIV 0x1
#define ARM_MMU_IDX_M_NEGPRI 0x2
#define ARM_MMU_IDX_M_S 0x4 /* Secure */
#define ARM_MMU_IDX_TYPE_MASK \
(ARM_MMU_IDX_A | ARM_MMU_IDX_M | ARM_MMU_IDX_NOTLB)
#define ARM_MMU_IDX_COREIDX_MASK 0xf
typedef enum ARMMMUIdx {
/*
* A-profile.
*/
ARMMMUIdx_E10_0 = 0 | ARM_MMU_IDX_A,
ARMMMUIdx_E20_0 = 1 | ARM_MMU_IDX_A,
ARMMMUIdx_E10_1 = 2 | ARM_MMU_IDX_A,
ARMMMUIdx_E20_2 = 3 | ARM_MMU_IDX_A,
ARMMMUIdx_E10_1_PAN = 4 | ARM_MMU_IDX_A,
ARMMMUIdx_E20_2_PAN = 5 | ARM_MMU_IDX_A,
ARMMMUIdx_E2 = 6 | ARM_MMU_IDX_A,
ARMMMUIdx_E3 = 7 | ARM_MMU_IDX_A,
/*
* Used for second stage of an S12 page table walk, or for descriptor
* loads during first stage of an S1 page table walk. Note that both
* are in use simultaneously for SecureEL2: the security state for
* the S2 ptw is selected by the NS bit from the S1 ptw.
*/
ARMMMUIdx_Stage2_S = 8 | ARM_MMU_IDX_A,
ARMMMUIdx_Stage2 = 9 | ARM_MMU_IDX_A,
/* TLBs with 1-1 mapping to the physical address spaces. */
ARMMMUIdx_Phys_S = 10 | ARM_MMU_IDX_A,
ARMMMUIdx_Phys_NS = 11 | ARM_MMU_IDX_A,
ARMMMUIdx_Phys_Root = 12 | ARM_MMU_IDX_A,
ARMMMUIdx_Phys_Realm = 13 | ARM_MMU_IDX_A,
/*
* These are not allocated TLBs and are used only for AT system
* instructions or for the first stage of an S12 page table walk.
*/
ARMMMUIdx_Stage1_E0 = 0 | ARM_MMU_IDX_NOTLB,
ARMMMUIdx_Stage1_E1 = 1 | ARM_MMU_IDX_NOTLB,
ARMMMUIdx_Stage1_E1_PAN = 2 | ARM_MMU_IDX_NOTLB,
/*
* M-profile.
*/
ARMMMUIdx_MUser = ARM_MMU_IDX_M,
ARMMMUIdx_MPriv = ARM_MMU_IDX_M | ARM_MMU_IDX_M_PRIV,
ARMMMUIdx_MUserNegPri = ARMMMUIdx_MUser | ARM_MMU_IDX_M_NEGPRI,
ARMMMUIdx_MPrivNegPri = ARMMMUIdx_MPriv | ARM_MMU_IDX_M_NEGPRI,
ARMMMUIdx_MSUser = ARMMMUIdx_MUser | ARM_MMU_IDX_M_S,
ARMMMUIdx_MSPriv = ARMMMUIdx_MPriv | ARM_MMU_IDX_M_S,
ARMMMUIdx_MSUserNegPri = ARMMMUIdx_MUserNegPri | ARM_MMU_IDX_M_S,
ARMMMUIdx_MSPrivNegPri = ARMMMUIdx_MPrivNegPri | ARM_MMU_IDX_M_S,
} ARMMMUIdx;
/*
* Bit macros for the core-mmu-index values for each index,
* for use when calling tlb_flush_by_mmuidx() and friends.
*/
#define TO_CORE_BIT(NAME) \
ARMMMUIdxBit_##NAME = 1 << (ARMMMUIdx_##NAME & ARM_MMU_IDX_COREIDX_MASK)
typedef enum ARMMMUIdxBit {
TO_CORE_BIT(E10_0),
TO_CORE_BIT(E20_0),
TO_CORE_BIT(E10_1),
TO_CORE_BIT(E10_1_PAN),
TO_CORE_BIT(E2),
TO_CORE_BIT(E20_2),
TO_CORE_BIT(E20_2_PAN),
TO_CORE_BIT(E3),
TO_CORE_BIT(Stage2),
TO_CORE_BIT(Stage2_S),
TO_CORE_BIT(MUser),
TO_CORE_BIT(MPriv),
TO_CORE_BIT(MUserNegPri),
TO_CORE_BIT(MPrivNegPri),
TO_CORE_BIT(MSUser),
TO_CORE_BIT(MSPriv),
TO_CORE_BIT(MSUserNegPri),
TO_CORE_BIT(MSPrivNegPri),
} ARMMMUIdxBit;
#undef TO_CORE_BIT
#define MMU_USER_IDX 0
/* Indexes used when registering address spaces with cpu_address_space_init */
typedef enum ARMASIdx {
ARMASIdx_NS = 0,
ARMASIdx_S = 1,
ARMASIdx_TagNS = 2,
ARMASIdx_TagS = 3,
} ARMASIdx;
static inline ARMMMUIdx arm_space_to_phys(ARMSecuritySpace space)
{
/* Assert the relative order of the physical mmu indexes. */
QEMU_BUILD_BUG_ON(ARMSS_Secure != 0);
QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_NS != ARMMMUIdx_Phys_S + ARMSS_NonSecure);
QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_Root != ARMMMUIdx_Phys_S + ARMSS_Root);
QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_Realm != ARMMMUIdx_Phys_S + ARMSS_Realm);
return ARMMMUIdx_Phys_S + space;
}
static inline ARMSecuritySpace arm_phys_to_space(ARMMMUIdx idx)
{
assert(idx >= ARMMMUIdx_Phys_S && idx <= ARMMMUIdx_Phys_Realm);
return idx - ARMMMUIdx_Phys_S;
}
static inline bool arm_v7m_csselr_razwi(ARMCPU *cpu)
{
/* If all the CLIDR.Ctypem bits are 0 there are no caches, and
* CSSELR is RAZ/WI.
*/
return (cpu->clidr & R_V7M_CLIDR_CTYPE_ALL_MASK) != 0;
}
static inline bool arm_sctlr_b(CPUARMState *env)
{
return
/* We need not implement SCTLR.ITD in user-mode emulation, so
* let linux-user ignore the fact that it conflicts with SCTLR_B.
* This lets people run BE32 binaries with "-cpu any".
*/
#ifndef CONFIG_USER_ONLY
!arm_feature(env, ARM_FEATURE_V7) &&
#endif
(env->cp15.sctlr_el[1] & SCTLR_B) != 0;
}
uint64_t arm_sctlr(CPUARMState *env, int el);
static inline bool arm_cpu_data_is_big_endian_a32(CPUARMState *env,
bool sctlr_b)
{
#ifdef CONFIG_USER_ONLY
/*
* In system mode, BE32 is modelled in line with the
* architecture (as word-invariant big-endianness), where loads
* and stores are done little endian but from addresses which
* are adjusted by XORing with the appropriate constant. So the
* endianness to use for the raw data access is not affected by
* SCTLR.B.
* In user mode, however, we model BE32 as byte-invariant
* big-endianness (because user-only code cannot tell the
* difference), and so we need to use a data access endianness
* that depends on SCTLR.B.
*/
if (sctlr_b) {
return true;
}
#endif
/* In 32bit endianness is determined by looking at CPSR's E bit */
return env->uncached_cpsr & CPSR_E;
}
static inline bool arm_cpu_data_is_big_endian_a64(int el, uint64_t sctlr)
{
return sctlr & (el ? SCTLR_EE : SCTLR_E0E);
}
/* Return true if the processor is in big-endian mode. */
static inline bool arm_cpu_data_is_big_endian(CPUARMState *env)
{
if (!is_a64(env)) {
return arm_cpu_data_is_big_endian_a32(env, arm_sctlr_b(env));
} else {
int cur_el = arm_current_el(env);
uint64_t sctlr = arm_sctlr(env, cur_el);
return arm_cpu_data_is_big_endian_a64(cur_el, sctlr);
}
}
#include "exec/cpu-all.h"
/*
* We have more than 32-bits worth of state per TB, so we split the data
* between tb->flags and tb->cs_base, which is otherwise unused for ARM.
* We collect these two parts in CPUARMTBFlags where they are named
* flags and flags2 respectively.
*
* The flags that are shared between all execution modes, TBFLAG_ANY,
* are stored in flags. The flags that are specific to a given mode
* are stores in flags2. Since cs_base is sized on the configured
* address size, flags2 always has 64-bits for A64, and a minimum of
* 32-bits for A32 and M32.
*
* The bits for 32-bit A-profile and M-profile partially overlap:
*
* 31 23 11 10 0
* +-------------+----------+----------------+
* | | | TBFLAG_A32 |
* | TBFLAG_AM32 | +-----+----------+
* | | |TBFLAG_M32|
* +-------------+----------------+----------+
* 31 23 6 5 0
*
* Unless otherwise noted, these bits are cached in env->hflags.
*/
FIELD(TBFLAG_ANY, AARCH64_STATE, 0, 1)
FIELD(TBFLAG_ANY, SS_ACTIVE, 1, 1)
FIELD(TBFLAG_ANY, PSTATE__SS, 2, 1) /* Not cached. */
FIELD(TBFLAG_ANY, BE_DATA, 3, 1)
FIELD(TBFLAG_ANY, MMUIDX, 4, 4)
/* Target EL if we take a floating-point-disabled exception */
FIELD(TBFLAG_ANY, FPEXC_EL, 8, 2)
/* Memory operations require alignment: SCTLR_ELx.A or CCR.UNALIGN_TRP */
FIELD(TBFLAG_ANY, ALIGN_MEM, 10, 1)
FIELD(TBFLAG_ANY, PSTATE__IL, 11, 1)
FIELD(TBFLAG_ANY, FGT_ACTIVE, 12, 1)
FIELD(TBFLAG_ANY, FGT_SVC, 13, 1)
/*
* Bit usage when in AArch32 state, both A- and M-profile.
*/
FIELD(TBFLAG_AM32, CONDEXEC, 24, 8) /* Not cached. */
FIELD(TBFLAG_AM32, THUMB, 23, 1) /* Not cached. */
/*
* Bit usage when in AArch32 state, for A-profile only.
*/
FIELD(TBFLAG_A32, VECLEN, 0, 3) /* Not cached. */
FIELD(TBFLAG_A32, VECSTRIDE, 3, 2) /* Not cached. */
/*
* We store the bottom two bits of the CPAR as TB flags and handle
* checks on the other bits at runtime. This shares the same bits as
* VECSTRIDE, which is OK as no XScale CPU has VFP.
* Not cached, because VECLEN+VECSTRIDE are not cached.
*/
FIELD(TBFLAG_A32, XSCALE_CPAR, 5, 2)
FIELD(TBFLAG_A32, VFPEN, 7, 1) /* Partially cached, minus FPEXC. */
FIELD(TBFLAG_A32, SCTLR__B, 8, 1) /* Cannot overlap with SCTLR_B */
FIELD(TBFLAG_A32, HSTR_ACTIVE, 9, 1)
/*
* Indicates whether cp register reads and writes by guest code should access
* the secure or nonsecure bank of banked registers; note that this is not
* the same thing as the current security state of the processor!
*/
FIELD(TBFLAG_A32, NS, 10, 1)
/*
* Indicates that SME Streaming mode is active, and SMCR_ELx.FA64 is not.
* This requires an SME trap from AArch32 mode when using NEON.
*/
FIELD(TBFLAG_A32, SME_TRAP_NONSTREAMING, 11, 1)
/*
* Indicates whether we are in the Secure PL1&0 translation regime
*/
FIELD(TBFLAG_A32, S_PL1_0, 12, 1)
/*
* Bit usage when in AArch32 state, for M-profile only.
*/
/* Handler (ie not Thread) mode */
FIELD(TBFLAG_M32, HANDLER, 0, 1)
/* Whether we should generate stack-limit checks */
FIELD(TBFLAG_M32, STACKCHECK, 1, 1)
/* Set if FPCCR.LSPACT is set */
FIELD(TBFLAG_M32, LSPACT, 2, 1) /* Not cached. */
/* Set if we must create a new FP context */
FIELD(TBFLAG_M32, NEW_FP_CTXT_NEEDED, 3, 1) /* Not cached. */
/* Set if FPCCR.S does not match current security state */
FIELD(TBFLAG_M32, FPCCR_S_WRONG, 4, 1) /* Not cached. */
/* Set if MVE insns are definitely not predicated by VPR or LTPSIZE */
FIELD(TBFLAG_M32, MVE_NO_PRED, 5, 1) /* Not cached. */
/* Set if in secure mode */
FIELD(TBFLAG_M32, SECURE, 6, 1)
/*
* Bit usage when in AArch64 state
*/
FIELD(TBFLAG_A64, TBII, 0, 2)
FIELD(TBFLAG_A64, SVEEXC_EL, 2, 2)
/* The current vector length, either NVL or SVL. */
FIELD(TBFLAG_A64, VL, 4, 4)
FIELD(TBFLAG_A64, PAUTH_ACTIVE, 8, 1)
FIELD(TBFLAG_A64, BT, 9, 1)
FIELD(TBFLAG_A64, BTYPE, 10, 2) /* Not cached. */
FIELD(TBFLAG_A64, TBID, 12, 2)
FIELD(TBFLAG_A64, UNPRIV, 14, 1)
FIELD(TBFLAG_A64, ATA, 15, 1)
FIELD(TBFLAG_A64, TCMA, 16, 2)
FIELD(TBFLAG_A64, MTE_ACTIVE, 18, 1)
FIELD(TBFLAG_A64, MTE0_ACTIVE, 19, 1)
FIELD(TBFLAG_A64, SMEEXC_EL, 20, 2)
FIELD(TBFLAG_A64, PSTATE_SM, 22, 1)
FIELD(TBFLAG_A64, PSTATE_ZA, 23, 1)
FIELD(TBFLAG_A64, SVL, 24, 4)
/* Indicates that SME Streaming mode is active, and SMCR_ELx.FA64 is not. */
FIELD(TBFLAG_A64, SME_TRAP_NONSTREAMING, 28, 1)
FIELD(TBFLAG_A64, TRAP_ERET, 29, 1)
FIELD(TBFLAG_A64, NAA, 30, 1)
FIELD(TBFLAG_A64, ATA0, 31, 1)
FIELD(TBFLAG_A64, NV, 32, 1)
FIELD(TBFLAG_A64, NV1, 33, 1)
FIELD(TBFLAG_A64, NV2, 34, 1)
/* Set if FEAT_NV2 RAM accesses use the EL2&0 translation regime */
FIELD(TBFLAG_A64, NV2_MEM_E20, 35, 1)
/* Set if FEAT_NV2 RAM accesses are big-endian */
FIELD(TBFLAG_A64, NV2_MEM_BE, 36, 1)
/*
* Helpers for using the above. Note that only the A64 accessors use
* FIELD_DP64() and FIELD_EX64(), because in the other cases the flags
* word either is or might be 32 bits only.
*/
#define DP_TBFLAG_ANY(DST, WHICH, VAL) \
(DST.flags = FIELD_DP32(DST.flags, TBFLAG_ANY, WHICH, VAL))
#define DP_TBFLAG_A64(DST, WHICH, VAL) \
(DST.flags2 = FIELD_DP64(DST.flags2, TBFLAG_A64, WHICH, VAL))
#define DP_TBFLAG_A32(DST, WHICH, VAL) \
(DST.flags2 = FIELD_DP32(DST.flags2, TBFLAG_A32, WHICH, VAL))
#define DP_TBFLAG_M32(DST, WHICH, VAL) \
(DST.flags2 = FIELD_DP32(DST.flags2, TBFLAG_M32, WHICH, VAL))
#define DP_TBFLAG_AM32(DST, WHICH, VAL) \
(DST.flags2 = FIELD_DP32(DST.flags2, TBFLAG_AM32, WHICH, VAL))
#define EX_TBFLAG_ANY(IN, WHICH) FIELD_EX32(IN.flags, TBFLAG_ANY, WHICH)
#define EX_TBFLAG_A64(IN, WHICH) FIELD_EX64(IN.flags2, TBFLAG_A64, WHICH)
#define EX_TBFLAG_A32(IN, WHICH) FIELD_EX32(IN.flags2, TBFLAG_A32, WHICH)
#define EX_TBFLAG_M32(IN, WHICH) FIELD_EX32(IN.flags2, TBFLAG_M32, WHICH)
#define EX_TBFLAG_AM32(IN, WHICH) FIELD_EX32(IN.flags2, TBFLAG_AM32, WHICH)
/**
* sve_vq
* @env: the cpu context
*
* Return the VL cached within env->hflags, in units of quadwords.
*/
static inline int sve_vq(CPUARMState *env)
{
return EX_TBFLAG_A64(env->hflags, VL) + 1;
}
/**
* sme_vq
* @env: the cpu context
*
* Return the SVL cached within env->hflags, in units of quadwords.
*/
static inline int sme_vq(CPUARMState *env)
{
return EX_TBFLAG_A64(env->hflags, SVL) + 1;
}
static inline bool bswap_code(bool sctlr_b)
{
#ifdef CONFIG_USER_ONLY
/* BE8 (SCTLR.B = 0, TARGET_BIG_ENDIAN = 1) is mixed endian.
* The invalid combination SCTLR.B=1/CPSR.E=1/TARGET_BIG_ENDIAN=0
* would also end up as a mixed-endian mode with BE code, LE data.
*/
return TARGET_BIG_ENDIAN ^ sctlr_b;
#else
/* All code access in ARM is little endian, and there are no loaders
* doing swaps that need to be reversed
*/
return 0;
#endif
}
#ifdef CONFIG_USER_ONLY
static inline bool arm_cpu_bswap_data(CPUARMState *env)
{
return TARGET_BIG_ENDIAN ^ arm_cpu_data_is_big_endian(env);
}
#endif
void cpu_get_tb_cpu_state(CPUARMState *env, vaddr *pc,
uint64_t *cs_base, uint32_t *flags);
enum {
QEMU_PSCI_CONDUIT_DISABLED = 0,
QEMU_PSCI_CONDUIT_SMC = 1,
QEMU_PSCI_CONDUIT_HVC = 2,
};
#ifndef CONFIG_USER_ONLY
/* Return the address space index to use for a memory access */
static inline int arm_asidx_from_attrs(CPUState *cs, MemTxAttrs attrs)
{
return attrs.secure ? ARMASIdx_S : ARMASIdx_NS;
}
/* Return the AddressSpace to use for a memory access
* (which depends on whether the access is S or NS, and whether
* the board gave us a separate AddressSpace for S accesses).
*/
static inline AddressSpace *arm_addressspace(CPUState *cs, MemTxAttrs attrs)
{
return cpu_get_address_space(cs, arm_asidx_from_attrs(cs, attrs));
}
#endif
/**
* arm_register_pre_el_change_hook:
* Register a hook function which will be called immediately before this
* CPU changes exception level or mode. The hook function will be
* passed a pointer to the ARMCPU and the opaque data pointer passed
* to this function when the hook was registered.
*
* Note that if a pre-change hook is called, any registered post-change hooks
* are guaranteed to subsequently be called.
*/
void arm_register_pre_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook,
void *opaque);
/**
* arm_register_el_change_hook:
* Register a hook function which will be called immediately after this
* CPU changes exception level or mode. The hook function will be
* passed a pointer to the ARMCPU and the opaque data pointer passed
* to this function when the hook was registered.
*
* Note that any registered hooks registered here are guaranteed to be called
* if pre-change hooks have been.
*/
void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, void
*opaque);
/**
* arm_rebuild_hflags:
* Rebuild the cached TBFLAGS for arbitrary changed processor state.
*/
void arm_rebuild_hflags(CPUARMState *env);
/**
* aa32_vfp_dreg:
* Return a pointer to the Dn register within env in 32-bit mode.
*/
static inline uint64_t *aa32_vfp_dreg(CPUARMState *env, unsigned regno)
{
return &env->vfp.zregs[regno >> 1].d[regno & 1];
}
/**
* aa32_vfp_qreg:
* Return a pointer to the Qn register within env in 32-bit mode.
*/
static inline uint64_t *aa32_vfp_qreg(CPUARMState *env, unsigned regno)
{
return &env->vfp.zregs[regno].d[0];
}
/**
* aa64_vfp_qreg:
* Return a pointer to the Qn register within env in 64-bit mode.
*/
static inline uint64_t *aa64_vfp_qreg(CPUARMState *env, unsigned regno)
{
return &env->vfp.zregs[regno].d[0];
}
/* Shared between translate-sve.c and sve_helper.c. */
extern const uint64_t pred_esz_masks[5];
/*
* AArch64 usage of the PAGE_TARGET_* bits for linux-user.
* Note that with the Linux kernel, PROT_MTE may not be cleared by mprotect
* mprotect but PROT_BTI may be cleared. C.f. the kernel's VM_ARCH_CLEAR.
*/
#define PAGE_BTI PAGE_TARGET_1
#define PAGE_MTE PAGE_TARGET_2
#define PAGE_TARGET_STICKY PAGE_MTE
/* We associate one allocation tag per 16 bytes, the minimum. */
#define LOG2_TAG_GRANULE 4
#define TAG_GRANULE (1 << LOG2_TAG_GRANULE)
#ifdef CONFIG_USER_ONLY
#define TARGET_PAGE_DATA_SIZE (TARGET_PAGE_SIZE >> (LOG2_TAG_GRANULE + 1))
#endif
#ifdef TARGET_TAGGED_ADDRESSES
/**
* cpu_untagged_addr:
* @cs: CPU context
* @x: tagged address
*
* Remove any address tag from @x. This is explicitly related to the
* linux syscall TIF_TAGGED_ADDR setting, not TBI in general.
*
* There should be a better place to put this, but we need this in
* include/exec/cpu_ldst.h, and not some place linux-user specific.
*/
static inline target_ulong cpu_untagged_addr(CPUState *cs, target_ulong x)
{
CPUARMState *env = cpu_env(cs);
if (env->tagged_addr_enable) {
/*
* TBI is enabled for userspace but not kernelspace addresses.
* Only clear the tag if bit 55 is clear.
*/
x &= sextract64(x, 0, 56);
}
return x;
}
#endif
#endif
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