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qemu/target/xtensa/cpu.h
Max Filippov b68755c142 target/xtensa: sim: instantiate local memories 
Xtensa core may have a number of RAM and ROM areas configured. Record
their size and location from the core configuration overlay and
instantiate them as RAM regions in the SIM machine.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-02-23 10:30:41 -08:00

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/*
* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Open Source and Linux Lab nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef XTENSA_CPU_H
#define XTENSA_CPU_H
#define ALIGNED_ONLY
#define TARGET_LONG_BITS 32
#define CPUArchState struct CPUXtensaState
#include "qemu-common.h"
#include "cpu-qom.h"
#include "exec/cpu-defs.h"
#include "fpu/softfloat.h"
#define NB_MMU_MODES 4
#define TARGET_PHYS_ADDR_SPACE_BITS 32
#define TARGET_VIRT_ADDR_SPACE_BITS 32
#define TARGET_PAGE_BITS 12
enum {
/* Additional instructions */
XTENSA_OPTION_CODE_DENSITY,
XTENSA_OPTION_LOOP,
XTENSA_OPTION_EXTENDED_L32R,
XTENSA_OPTION_16_BIT_IMUL,
XTENSA_OPTION_32_BIT_IMUL,
XTENSA_OPTION_32_BIT_IMUL_HIGH,
XTENSA_OPTION_32_BIT_IDIV,
XTENSA_OPTION_MAC16,
XTENSA_OPTION_MISC_OP_NSA,
XTENSA_OPTION_MISC_OP_MINMAX,
XTENSA_OPTION_MISC_OP_SEXT,
XTENSA_OPTION_MISC_OP_CLAMPS,
XTENSA_OPTION_COPROCESSOR,
XTENSA_OPTION_BOOLEAN,
XTENSA_OPTION_FP_COPROCESSOR,
XTENSA_OPTION_MP_SYNCHRO,
XTENSA_OPTION_CONDITIONAL_STORE,
XTENSA_OPTION_ATOMCTL,
XTENSA_OPTION_DEPBITS,
/* Interrupts and exceptions */
XTENSA_OPTION_EXCEPTION,
XTENSA_OPTION_RELOCATABLE_VECTOR,
XTENSA_OPTION_UNALIGNED_EXCEPTION,
XTENSA_OPTION_INTERRUPT,
XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT,
XTENSA_OPTION_TIMER_INTERRUPT,
/* Local memory */
XTENSA_OPTION_ICACHE,
XTENSA_OPTION_ICACHE_TEST,
XTENSA_OPTION_ICACHE_INDEX_LOCK,
XTENSA_OPTION_DCACHE,
XTENSA_OPTION_DCACHE_TEST,
XTENSA_OPTION_DCACHE_INDEX_LOCK,
XTENSA_OPTION_IRAM,
XTENSA_OPTION_IROM,
XTENSA_OPTION_DRAM,
XTENSA_OPTION_DROM,
XTENSA_OPTION_XLMI,
XTENSA_OPTION_HW_ALIGNMENT,
XTENSA_OPTION_MEMORY_ECC_PARITY,
/* Memory protection and translation */
XTENSA_OPTION_REGION_PROTECTION,
XTENSA_OPTION_REGION_TRANSLATION,
XTENSA_OPTION_MMU,
XTENSA_OPTION_CACHEATTR,
/* Other */
XTENSA_OPTION_WINDOWED_REGISTER,
XTENSA_OPTION_PROCESSOR_INTERFACE,
XTENSA_OPTION_MISC_SR,
XTENSA_OPTION_THREAD_POINTER,
XTENSA_OPTION_PROCESSOR_ID,
XTENSA_OPTION_DEBUG,
XTENSA_OPTION_TRACE_PORT,
XTENSA_OPTION_EXTERN_REGS,
};
enum {
THREADPTR = 231,
FCR = 232,
FSR = 233,
};
enum {
LBEG = 0,
LEND = 1,
LCOUNT = 2,
SAR = 3,
BR = 4,
LITBASE = 5,
SCOMPARE1 = 12,
ACCLO = 16,
ACCHI = 17,
MR = 32,
WINDOW_BASE = 72,
WINDOW_START = 73,
PTEVADDR = 83,
RASID = 90,
ITLBCFG = 91,
DTLBCFG = 92,
IBREAKENABLE = 96,
MEMCTL = 97,
CACHEATTR = 98,
ATOMCTL = 99,
IBREAKA = 128,
DBREAKA = 144,
DBREAKC = 160,
CONFIGID0 = 176,
EPC1 = 177,
DEPC = 192,
EPS2 = 194,
CONFIGID1 = 208,
EXCSAVE1 = 209,
CPENABLE = 224,
INTSET = 226,
INTCLEAR = 227,
INTENABLE = 228,
PS = 230,
VECBASE = 231,
EXCCAUSE = 232,
DEBUGCAUSE = 233,
CCOUNT = 234,
PRID = 235,
ICOUNT = 236,
ICOUNTLEVEL = 237,
EXCVADDR = 238,
CCOMPARE = 240,
MISC = 244,
};
#define PS_INTLEVEL 0xf
#define PS_INTLEVEL_SHIFT 0
#define PS_EXCM 0x10
#define PS_UM 0x20
#define PS_RING 0xc0
#define PS_RING_SHIFT 6
#define PS_OWB 0xf00
#define PS_OWB_SHIFT 8
#define PS_CALLINC 0x30000
#define PS_CALLINC_SHIFT 16
#define PS_CALLINC_LEN 2
#define PS_WOE 0x40000
#define DEBUGCAUSE_IC 0x1
#define DEBUGCAUSE_IB 0x2
#define DEBUGCAUSE_DB 0x4
#define DEBUGCAUSE_BI 0x8
#define DEBUGCAUSE_BN 0x10
#define DEBUGCAUSE_DI 0x20
#define DEBUGCAUSE_DBNUM 0xf00
#define DEBUGCAUSE_DBNUM_SHIFT 8
#define DBREAKC_SB 0x80000000
#define DBREAKC_LB 0x40000000
#define DBREAKC_SB_LB (DBREAKC_SB | DBREAKC_LB)
#define DBREAKC_MASK 0x3f
#define MEMCTL_INIT 0x00800000
#define MEMCTL_IUSEWAYS_SHIFT 18
#define MEMCTL_IUSEWAYS_LEN 5
#define MEMCTL_IUSEWAYS_MASK 0x007c0000
#define MEMCTL_DALLOCWAYS_SHIFT 13
#define MEMCTL_DALLOCWAYS_LEN 5
#define MEMCTL_DALLOCWAYS_MASK 0x0003e000
#define MEMCTL_DUSEWAYS_SHIFT 8
#define MEMCTL_DUSEWAYS_LEN 5
#define MEMCTL_DUSEWAYS_MASK 0x00001f00
#define MEMCTL_ISNP 0x4
#define MEMCTL_DSNP 0x2
#define MEMCTL_IL0EN 0x1
#define MAX_NAREG 64
#define MAX_NINTERRUPT 32
#define MAX_NLEVEL 6
#define MAX_NNMI 1
#define MAX_NCCOMPARE 3
#define MAX_TLB_WAY_SIZE 8
#define MAX_NDBREAK 2
#define MAX_NMEMORY 4
#define REGION_PAGE_MASK 0xe0000000
#define PAGE_CACHE_MASK 0x700
#define PAGE_CACHE_SHIFT 8
#define PAGE_CACHE_INVALID 0x000
#define PAGE_CACHE_BYPASS 0x100
#define PAGE_CACHE_WT 0x200
#define PAGE_CACHE_WB 0x400
#define PAGE_CACHE_ISOLATE 0x600
enum {
/* Static vectors */
EXC_RESET0,
EXC_RESET1,
EXC_MEMORY_ERROR,
/* Dynamic vectors */
EXC_WINDOW_OVERFLOW4,
EXC_WINDOW_UNDERFLOW4,
EXC_WINDOW_OVERFLOW8,
EXC_WINDOW_UNDERFLOW8,
EXC_WINDOW_OVERFLOW12,
EXC_WINDOW_UNDERFLOW12,
EXC_IRQ,
EXC_KERNEL,
EXC_USER,
EXC_DOUBLE,
EXC_DEBUG,
EXC_MAX
};
enum {
ILLEGAL_INSTRUCTION_CAUSE = 0,
SYSCALL_CAUSE,
INSTRUCTION_FETCH_ERROR_CAUSE,
LOAD_STORE_ERROR_CAUSE,
LEVEL1_INTERRUPT_CAUSE,
ALLOCA_CAUSE,
INTEGER_DIVIDE_BY_ZERO_CAUSE,
PRIVILEGED_CAUSE = 8,
LOAD_STORE_ALIGNMENT_CAUSE,
INSTR_PIF_DATA_ERROR_CAUSE = 12,
LOAD_STORE_PIF_DATA_ERROR_CAUSE,
INSTR_PIF_ADDR_ERROR_CAUSE,
LOAD_STORE_PIF_ADDR_ERROR_CAUSE,
INST_TLB_MISS_CAUSE,
INST_TLB_MULTI_HIT_CAUSE,
INST_FETCH_PRIVILEGE_CAUSE,
INST_FETCH_PROHIBITED_CAUSE = 20,
LOAD_STORE_TLB_MISS_CAUSE = 24,
LOAD_STORE_TLB_MULTI_HIT_CAUSE,
LOAD_STORE_PRIVILEGE_CAUSE,
LOAD_PROHIBITED_CAUSE = 28,
STORE_PROHIBITED_CAUSE,
COPROCESSOR0_DISABLED = 32,
};
typedef enum {
INTTYPE_LEVEL,
INTTYPE_EDGE,
INTTYPE_NMI,
INTTYPE_SOFTWARE,
INTTYPE_TIMER,
INTTYPE_DEBUG,
INTTYPE_WRITE_ERR,
INTTYPE_PROFILING,
INTTYPE_MAX
} interrupt_type;
struct CPUXtensaState;
typedef struct xtensa_tlb_entry {
uint32_t vaddr;
uint32_t paddr;
uint8_t asid;
uint8_t attr;
bool variable;
} xtensa_tlb_entry;
typedef struct xtensa_tlb {
unsigned nways;
const unsigned way_size[10];
bool varway56;
unsigned nrefillentries;
} xtensa_tlb;
typedef struct XtensaGdbReg {
int targno;
int type;
int group;
unsigned size;
} XtensaGdbReg;
typedef struct XtensaGdbRegmap {
int num_regs;
int num_core_regs;
/* PC + a + ar + sr + ur */
XtensaGdbReg reg[1 + 16 + 64 + 256 + 256];
} XtensaGdbRegmap;
typedef struct XtensaCcompareTimer {
struct CPUXtensaState *env;
QEMUTimer *timer;
} XtensaCcompareTimer;
typedef struct XtensaMemory {
unsigned num;
struct XtensaMemoryRegion {
uint32_t addr;
uint32_t size;
} location[MAX_NMEMORY];
} XtensaMemory;
struct XtensaConfig {
const char *name;
uint64_t options;
XtensaGdbRegmap gdb_regmap;
unsigned nareg;
int excm_level;
int ndepc;
uint32_t vecbase;
uint32_t exception_vector[EXC_MAX];
unsigned ninterrupt;
unsigned nlevel;
uint32_t interrupt_vector[MAX_NLEVEL + MAX_NNMI + 1];
uint32_t level_mask[MAX_NLEVEL + MAX_NNMI + 1];
uint32_t inttype_mask[INTTYPE_MAX];
struct {
uint32_t level;
interrupt_type inttype;
} interrupt[MAX_NINTERRUPT];
unsigned nccompare;
uint32_t timerint[MAX_NCCOMPARE];
unsigned nextint;
unsigned extint[MAX_NINTERRUPT];
unsigned debug_level;
unsigned nibreak;
unsigned ndbreak;
unsigned icache_ways;
unsigned dcache_ways;
uint32_t memctl_mask;
XtensaMemory instrom;
XtensaMemory instram;
XtensaMemory datarom;
XtensaMemory dataram;
XtensaMemory sysrom;
XtensaMemory sysram;
uint32_t configid[2];
uint32_t clock_freq_khz;
xtensa_tlb itlb;
xtensa_tlb dtlb;
};
typedef struct XtensaConfigList {
const XtensaConfig *config;
struct XtensaConfigList *next;
} XtensaConfigList;
#ifdef HOST_WORDS_BIGENDIAN
enum {
FP_F32_HIGH,
FP_F32_LOW,
};
#else
enum {
FP_F32_LOW,
FP_F32_HIGH,
};
#endif
typedef struct CPUXtensaState {
const XtensaConfig *config;
uint32_t regs[16];
uint32_t pc;
uint32_t sregs[256];
uint32_t uregs[256];
uint32_t phys_regs[MAX_NAREG];
union {
float32 f32[2];
float64 f64;
} fregs[16];
float_status fp_status;
xtensa_tlb_entry itlb[7][MAX_TLB_WAY_SIZE];
xtensa_tlb_entry dtlb[10][MAX_TLB_WAY_SIZE];
unsigned autorefill_idx;
bool runstall;
AddressSpace *address_space_er;
MemoryRegion *system_er;
int pending_irq_level; /* level of last raised IRQ */
void **irq_inputs;
XtensaCcompareTimer ccompare[MAX_NCCOMPARE];
uint64_t time_base;
uint64_t ccount_time;
uint32_t ccount_base;
int exception_taken;
int yield_needed;
unsigned static_vectors;
/* Watchpoints for DBREAK registers */
struct CPUWatchpoint *cpu_watchpoint[MAX_NDBREAK];
CPU_COMMON
} CPUXtensaState;
/**
* XtensaCPU:
* @env: #CPUXtensaState
*
* An Xtensa CPU.
*/
struct XtensaCPU {
/*< private >*/
CPUState parent_obj;
/*< public >*/
CPUXtensaState env;
};
static inline XtensaCPU *xtensa_env_get_cpu(const CPUXtensaState *env)
{
return container_of(env, XtensaCPU, env);
}
#define ENV_GET_CPU(e) CPU(xtensa_env_get_cpu(e))
#define ENV_OFFSET offsetof(XtensaCPU, env)
void xtensa_cpu_do_interrupt(CPUState *cpu);
bool xtensa_cpu_exec_interrupt(CPUState *cpu, int interrupt_request);
void xtensa_cpu_do_unassigned_access(CPUState *cpu, hwaddr addr,
bool is_write, bool is_exec, int opaque,
unsigned size);
void xtensa_cpu_dump_state(CPUState *cpu, FILE *f,
fprintf_function cpu_fprintf, int flags);
hwaddr xtensa_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
int xtensa_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
int xtensa_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
void xtensa_cpu_do_unaligned_access(CPUState *cpu, vaddr addr,
MMUAccessType access_type,
int mmu_idx, uintptr_t retaddr);
#define cpu_signal_handler cpu_xtensa_signal_handler
#define cpu_list xtensa_cpu_list
#ifdef TARGET_WORDS_BIGENDIAN
#define XTENSA_DEFAULT_CPU_MODEL "fsf"
#else
#define XTENSA_DEFAULT_CPU_MODEL "dc232b"
#endif
XtensaCPU *cpu_xtensa_init(const char *cpu_model);
#define cpu_init(cpu_model) CPU(cpu_xtensa_init(cpu_model))
void xtensa_translate_init(void);
void xtensa_breakpoint_handler(CPUState *cs);
void xtensa_finalize_config(XtensaConfig *config);
void xtensa_register_core(XtensaConfigList *node);
void check_interrupts(CPUXtensaState *s);
void xtensa_irq_init(CPUXtensaState *env);
void *xtensa_get_extint(CPUXtensaState *env, unsigned extint);
void xtensa_timer_irq(CPUXtensaState *env, uint32_t id, uint32_t active);
int cpu_xtensa_signal_handler(int host_signum, void *pinfo, void *puc);
void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf);
void xtensa_sync_window_from_phys(CPUXtensaState *env);
void xtensa_sync_phys_from_window(CPUXtensaState *env);
uint32_t xtensa_tlb_get_addr_mask(const CPUXtensaState *env, bool dtlb, uint32_t way);
void split_tlb_entry_spec_way(const CPUXtensaState *env, uint32_t v, bool dtlb,
uint32_t *vpn, uint32_t wi, uint32_t *ei);
int xtensa_tlb_lookup(const CPUXtensaState *env, uint32_t addr, bool dtlb,
uint32_t *pwi, uint32_t *pei, uint8_t *pring);
void xtensa_tlb_set_entry_mmu(const CPUXtensaState *env,
xtensa_tlb_entry *entry, bool dtlb,
unsigned wi, unsigned ei, uint32_t vpn, uint32_t pte);
void xtensa_tlb_set_entry(CPUXtensaState *env, bool dtlb,
unsigned wi, unsigned ei, uint32_t vpn, uint32_t pte);
int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb,
uint32_t vaddr, int is_write, int mmu_idx,
uint32_t *paddr, uint32_t *page_size, unsigned *access);
void reset_mmu(CPUXtensaState *env);
void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUXtensaState *env);
void debug_exception_env(CPUXtensaState *new_env, uint32_t cause);
static inline MemoryRegion *xtensa_get_er_region(CPUXtensaState *env)
{
return env->system_er;
}
static inline void xtensa_select_static_vectors(CPUXtensaState *env,
unsigned n)
{
assert(n < 2);
env->static_vectors = n;
}
void xtensa_runstall(CPUXtensaState *env, bool runstall);
#define XTENSA_OPTION_BIT(opt) (((uint64_t)1) << (opt))
#define XTENSA_OPTION_ALL (~(uint64_t)0)
static inline bool xtensa_option_bits_enabled(const XtensaConfig *config,
uint64_t opt)
{
return (config->options & opt) != 0;
}
static inline bool xtensa_option_enabled(const XtensaConfig *config, int opt)
{
return xtensa_option_bits_enabled(config, XTENSA_OPTION_BIT(opt));
}
static inline int xtensa_get_cintlevel(const CPUXtensaState *env)
{
int level = (env->sregs[PS] & PS_INTLEVEL) >> PS_INTLEVEL_SHIFT;
if ((env->sregs[PS] & PS_EXCM) && env->config->excm_level > level) {
level = env->config->excm_level;
}
return level;
}
static inline int xtensa_get_ring(const CPUXtensaState *env)
{
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) {
return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT;
} else {
return 0;
}
}
static inline int xtensa_get_cring(const CPUXtensaState *env)
{
if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU) &&
(env->sregs[PS] & PS_EXCM) == 0) {
return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT;
} else {
return 0;
}
}
static inline xtensa_tlb_entry *xtensa_tlb_get_entry(CPUXtensaState *env,
bool dtlb, unsigned wi, unsigned ei)
{
return dtlb ?
env->dtlb[wi] + ei :
env->itlb[wi] + ei;
}
static inline uint32_t xtensa_replicate_windowstart(CPUXtensaState *env)
{
return env->sregs[WINDOW_START] |
(env->sregs[WINDOW_START] << env->config->nareg / 4);
}
/* MMU modes definitions */
#define MMU_MODE0_SUFFIX _ring0
#define MMU_MODE1_SUFFIX _ring1
#define MMU_MODE2_SUFFIX _ring2
#define MMU_MODE3_SUFFIX _ring3
static inline int cpu_mmu_index(CPUXtensaState *env, bool ifetch)
{
return xtensa_get_cring(env);
}
#define XTENSA_TBFLAG_RING_MASK 0x3
#define XTENSA_TBFLAG_EXCM 0x4
#define XTENSA_TBFLAG_LITBASE 0x8
#define XTENSA_TBFLAG_DEBUG 0x10
#define XTENSA_TBFLAG_ICOUNT 0x20
#define XTENSA_TBFLAG_CPENABLE_MASK 0x3fc0
#define XTENSA_TBFLAG_CPENABLE_SHIFT 6
#define XTENSA_TBFLAG_EXCEPTION 0x4000
#define XTENSA_TBFLAG_WINDOW_MASK 0x18000
#define XTENSA_TBFLAG_WINDOW_SHIFT 15
#define XTENSA_TBFLAG_YIELD 0x20000
static inline void cpu_get_tb_cpu_state(CPUXtensaState *env, target_ulong *pc,
target_ulong *cs_base, uint32_t *flags)
{
CPUState *cs = CPU(xtensa_env_get_cpu(env));
*pc = env->pc;
*cs_base = 0;
*flags = 0;
*flags |= xtensa_get_ring(env);
if (env->sregs[PS] & PS_EXCM) {
*flags |= XTENSA_TBFLAG_EXCM;
}
if (xtensa_option_enabled(env->config, XTENSA_OPTION_EXTENDED_L32R) &&
(env->sregs[LITBASE] & 1)) {
*flags |= XTENSA_TBFLAG_LITBASE;
}
if (xtensa_option_enabled(env->config, XTENSA_OPTION_DEBUG)) {
if (xtensa_get_cintlevel(env) < env->config->debug_level) {
*flags |= XTENSA_TBFLAG_DEBUG;
}
if (xtensa_get_cintlevel(env) < env->sregs[ICOUNTLEVEL]) {
*flags |= XTENSA_TBFLAG_ICOUNT;
}
}
if (xtensa_option_enabled(env->config, XTENSA_OPTION_COPROCESSOR)) {
*flags |= env->sregs[CPENABLE] << XTENSA_TBFLAG_CPENABLE_SHIFT;
}
if (cs->singlestep_enabled && env->exception_taken) {
*flags |= XTENSA_TBFLAG_EXCEPTION;
}
if (xtensa_option_enabled(env->config, XTENSA_OPTION_WINDOWED_REGISTER) &&
(env->sregs[PS] & (PS_WOE | PS_EXCM)) == PS_WOE) {
uint32_t windowstart = xtensa_replicate_windowstart(env) >>
(env->sregs[WINDOW_BASE] + 1);
uint32_t w = ctz32(windowstart | 0x8);
*flags |= w << XTENSA_TBFLAG_WINDOW_SHIFT;
} else {
*flags |= 3 << XTENSA_TBFLAG_WINDOW_SHIFT;
}
if (env->yield_needed) {
*flags |= XTENSA_TBFLAG_YIELD;
}
}
#include "exec/cpu-all.h"
#endif
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