[qemu.git] / cpu-defs.h

/*
 * common defines for all CPUs
 *
 * 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 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 CPU_DEFS_H
#define CPU_DEFS_H

#ifndef NEED_CPU_H
#error cpu.h included from common code
#endif

#include "config.h"
#include <setjmp.h>
#include <inttypes.h>
#include <signal.h>
#include "osdep.h"
#include "qemu-queue.h"
#include "targphys.h"

#ifndef TARGET_LONG_BITS
#error TARGET_LONG_BITS must be defined before including this header
#endif

#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)

/* target_ulong is the type of a virtual address */
#if TARGET_LONG_SIZE == 4
typedef int32_t target_long;
typedef uint32_t target_ulong;
#define TARGET_FMT_lx "%08x"
#define TARGET_FMT_ld "%d"
#define TARGET_FMT_lu "%u"
#elif TARGET_LONG_SIZE == 8
typedef int64_t target_long;
typedef uint64_t target_ulong;
#define TARGET_FMT_lx "%016" PRIx64
#define TARGET_FMT_ld "%" PRId64
#define TARGET_FMT_lu "%" PRIu64
#else
#error TARGET_LONG_SIZE undefined
#endif

#define HOST_LONG_SIZE (HOST_LONG_BITS / 8)

#define EXCP_INTERRUPT 	0x10000 /* async interruption */
#define EXCP_HLT        0x10001 /* hlt instruction reached */
#define EXCP_DEBUG      0x10002 /* cpu stopped after a breakpoint or singlestep */
#define EXCP_HALTED     0x10003 /* cpu is halted (waiting for external event) */

#define TB_JMP_CACHE_BITS 12
#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)

/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for
   addresses on the same page.  The top bits are the same.  This allows
   TLB invalidation to quickly clear a subset of the hash table.  */
#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2)
#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS)
#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1)
#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE)

#if !defined(CONFIG_USER_ONLY)
#define CPU_TLB_BITS 8
#define CPU_TLB_SIZE (1 << CPU_TLB_BITS)

#if HOST_LONG_BITS == 32 && TARGET_LONG_BITS == 32
#define CPU_TLB_ENTRY_BITS 4
#else
#define CPU_TLB_ENTRY_BITS 5
#endif

typedef struct CPUTLBEntry {
    /* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address
       bit TARGET_PAGE_BITS-1..4  : Nonzero for accesses that should not
                                    go directly to ram.
       bit 3                      : indicates that the entry is invalid
       bit 2..0                   : zero
    */
    target_ulong addr_read;
    target_ulong addr_write;
    target_ulong addr_code;
    /* Addend to virtual address to get host address.  IO accesses
       use the corresponding iotlb value.  */
    unsigned long addend;
    /* padding to get a power of two size */
    uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) - 
                  (sizeof(target_ulong) * 3 + 
                   ((-sizeof(target_ulong) * 3) & (sizeof(unsigned long) - 1)) + 
                   sizeof(unsigned long))];
} CPUTLBEntry;

extern int CPUTLBEntry_wrong_size[sizeof(CPUTLBEntry) == (1 << CPU_TLB_ENTRY_BITS) ? 1 : -1];

#define CPU_COMMON_TLB \
    /* The meaning of the MMU modes is defined in the target code. */   \
    CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE];                  \
    target_phys_addr_t iotlb[NB_MMU_MODES][CPU_TLB_SIZE];               \
    target_ulong tlb_flush_addr;                                        \
    target_ulong tlb_flush_mask;

#else

#define CPU_COMMON_TLB

#endif


#ifdef HOST_WORDS_BIGENDIAN
typedef struct icount_decr_u16 {
    uint16_t high;
    uint16_t low;
} icount_decr_u16;
#else
typedef struct icount_decr_u16 {
    uint16_t low;
    uint16_t high;
} icount_decr_u16;
#endif

struct kvm_run;
struct KVMState;
struct qemu_work_item;

typedef struct CPUBreakpoint {
    target_ulong pc;
    int flags; /* BP_* */
    QTAILQ_ENTRY(CPUBreakpoint) entry;
} CPUBreakpoint;

typedef struct CPUWatchpoint {
    target_ulong vaddr;
    target_ulong len_mask;
    int flags; /* BP_* */
    QTAILQ_ENTRY(CPUWatchpoint) entry;
} CPUWatchpoint;

#define CPU_TEMP_BUF_NLONGS 128
#define CPU_COMMON                                                      \
    struct TranslationBlock *current_tb; /* currently executing TB  */  \
    /* soft mmu support */                                              \
    /* in order to avoid passing too many arguments to the MMIO         \
       helpers, we store some rarely used information in the CPU        \
       context) */                                                      \
    unsigned long mem_io_pc; /* host pc at which the memory was         \
                                accessed */                             \
    target_ulong mem_io_vaddr; /* target virtual addr at which the      \
                                     memory was accessed */             \
    uint32_t halted; /* Nonzero if the CPU is in suspend state */       \
    uint32_t interrupt_request;                                         \
    volatile sig_atomic_t exit_request;                                 \
    CPU_COMMON_TLB                                                      \
    struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE];           \
    /* buffer for temporaries in the code generator */                  \
    long temp_buf[CPU_TEMP_BUF_NLONGS];                                 \
                                                                        \
    int64_t icount_extra; /* Instructions until next timer event.  */   \
    /* Number of cycles left, with interrupt flag in high bit.          \
       This allows a single read-compare-cbranch-write sequence to test \
       for both decrementer underflow and exceptions.  */               \
    union {                                                             \
        uint32_t u32;                                                   \
        icount_decr_u16 u16;                                            \
    } icount_decr;                                                      \
    uint32_t can_do_io; /* nonzero if memory mapped IO is safe.  */     \
                                                                        \
    /* from this point: preserved by CPU reset */                       \
    /* ice debug support */                                             \
    QTAILQ_HEAD(breakpoints_head, CPUBreakpoint) breakpoints;            \
    int singlestep_enabled;                                             \
                                                                        \
    QTAILQ_HEAD(watchpoints_head, CPUWatchpoint) watchpoints;            \
    CPUWatchpoint *watchpoint_hit;                                      \
                                                                        \
    struct GDBRegisterState *gdb_regs;                                  \
                                                                        \
    /* Core interrupt code */                                           \
    jmp_buf jmp_env;                                                    \
    int exception_index;                                                \
                                                                        \
    CPUState *next_cpu; /* next CPU sharing TB cache */                 \
    int cpu_index; /* CPU index (informative) */                        \
    uint32_t host_tid; /* host thread ID */                             \
    int numa_node; /* NUMA node this cpu is belonging to  */            \
    int nr_cores;  /* number of cores within this CPU package */        \
    int nr_threads;/* number of threads within this CPU */              \
    int running; /* Nonzero if cpu is currently running(usermode).  */  \
    /* user data */                                                     \
    void *opaque;                                                       \
                                                                        \
    uint32_t created;                                                   \
    uint32_t stop;   /* Stop request */                                 \
    uint32_t stopped; /* Artificially stopped */                        \
    struct QemuThread *thread;                                          \
    struct QemuCond *halt_cond;                                         \
    struct qemu_work_item *queued_work_first, *queued_work_last;        \
    const char *cpu_model_str;                                          \
    struct KVMState *kvm_state;                                         \
    struct kvm_run *kvm_run;                                            \
    int kvm_fd;                                                         \
    int kvm_vcpu_dirty;

#endif
Commit	Line	Data
	1	/*
	2	* common defines for all CPUs
	3	*
	4	* Copyright (c) 2003 Fabrice Bellard
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	18	*/
	19	#ifndef CPU_DEFS_H
	20	#define CPU_DEFS_H
	21
	22	#ifndef NEED_CPU_H
	23	#error cpu.h included from common code
	24	#endif
	25
	26	#include "config.h"
	27	#include <setjmp.h>
	28	#include <inttypes.h>
	29	#include <signal.h>
	30	#include "osdep.h"
	31	#include "qemu-queue.h"
	32	#include "targphys.h"
	33
	34	#ifndef TARGET_LONG_BITS
	35	#error TARGET_LONG_BITS must be defined before including this header
	36	#endif
	37
	38	#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
	39
	40	/* target_ulong is the type of a virtual address */
	41	#if TARGET_LONG_SIZE == 4
	42	typedef int32_t target_long;
	43	typedef uint32_t target_ulong;
	44	#define TARGET_FMT_lx "%08x"
	45	#define TARGET_FMT_ld "%d"
	46	#define TARGET_FMT_lu "%u"
	47	#elif TARGET_LONG_SIZE == 8
	48	typedef int64_t target_long;
	49	typedef uint64_t target_ulong;
	50	#define TARGET_FMT_lx "%016" PRIx64
	51	#define TARGET_FMT_ld "%" PRId64
	52	#define TARGET_FMT_lu "%" PRIu64
	53	#else
	54	#error TARGET_LONG_SIZE undefined
	55	#endif
	56
	57	#define HOST_LONG_SIZE (HOST_LONG_BITS / 8)
	58
	59	#define EXCP_INTERRUPT 0x10000 /* async interruption */
	60	#define EXCP_HLT 0x10001 /* hlt instruction reached */
	61	#define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */
	62	#define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */
	63
	64	#define TB_JMP_CACHE_BITS 12
	65	#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
	66
	67	/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for
	68	addresses on the same page. The top bits are the same. This allows
	69	TLB invalidation to quickly clear a subset of the hash table. */
	70	#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2)
	71	#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS)
	72	#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1)
	73	#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE)
	74
	75	#if !defined(CONFIG_USER_ONLY)
	76	#define CPU_TLB_BITS 8
	77	#define CPU_TLB_SIZE (1 << CPU_TLB_BITS)
	78
	79	#if HOST_LONG_BITS == 32 && TARGET_LONG_BITS == 32
	80	#define CPU_TLB_ENTRY_BITS 4
	81	#else
	82	#define CPU_TLB_ENTRY_BITS 5
	83	#endif
	84
	85	typedef struct CPUTLBEntry {
	86	/* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address
	87	bit TARGET_PAGE_BITS-1..4 : Nonzero for accesses that should not
	88	go directly to ram.
	89	bit 3 : indicates that the entry is invalid
	90	bit 2..0 : zero
	91	*/
	92	target_ulong addr_read;
	93	target_ulong addr_write;
	94	target_ulong addr_code;
	95	/* Addend to virtual address to get host address. IO accesses
	96	use the corresponding iotlb value. */
	97	unsigned long addend;
	98	/* padding to get a power of two size */
	99	uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) -
	100	(sizeof(target_ulong) * 3 +
	101	((-sizeof(target_ulong) * 3) & (sizeof(unsigned long) - 1)) +
	102	sizeof(unsigned long))];
	103	} CPUTLBEntry;
	104
	105	extern int CPUTLBEntry_wrong_size[sizeof(CPUTLBEntry) == (1 << CPU_TLB_ENTRY_BITS) ? 1 : -1];
	106
	107	#define CPU_COMMON_TLB \
	108	/* The meaning of the MMU modes is defined in the target code. */ \
	109	CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \
	110	target_phys_addr_t iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \
	111	target_ulong tlb_flush_addr; \
	112	target_ulong tlb_flush_mask;
	113
	114	#else
	115
	116	#define CPU_COMMON_TLB
	117
	118	#endif
	119
	120
	121	#ifdef HOST_WORDS_BIGENDIAN
	122	typedef struct icount_decr_u16 {
	123	uint16_t high;
	124	uint16_t low;
	125	} icount_decr_u16;
	126	#else
	127	typedef struct icount_decr_u16 {
	128	uint16_t low;
	129	uint16_t high;
	130	} icount_decr_u16;
	131	#endif
	132
	133	struct kvm_run;
	134	struct KVMState;
	135	struct qemu_work_item;
	136
	137	typedef struct CPUBreakpoint {
	138	target_ulong pc;
	139	int flags; /* BP_* */
	140	QTAILQ_ENTRY(CPUBreakpoint) entry;
	141	} CPUBreakpoint;
	142
	143	typedef struct CPUWatchpoint {
	144	target_ulong vaddr;
	145	target_ulong len_mask;
	146	int flags; /* BP_* */
	147	QTAILQ_ENTRY(CPUWatchpoint) entry;
	148	} CPUWatchpoint;
	149
	150	#define CPU_TEMP_BUF_NLONGS 128
	151	#define CPU_COMMON \
	152	struct TranslationBlock current_tb; / currently executing TB */ \
	153	/* soft mmu support */ \
	154	/* in order to avoid passing too many arguments to the MMIO \
	155	helpers, we store some rarely used information in the CPU \
	156	context) */ \
	157	unsigned long mem_io_pc; /* host pc at which the memory was \
	158	accessed */ \
	159	target_ulong mem_io_vaddr; /* target virtual addr at which the \
	160	memory was accessed */ \
	161	uint32_t halted; /* Nonzero if the CPU is in suspend state */ \
	162	uint32_t interrupt_request; \
	163	volatile sig_atomic_t exit_request; \
	164	CPU_COMMON_TLB \
	165	struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \
	166	/* buffer for temporaries in the code generator */ \
	167	long temp_buf[CPU_TEMP_BUF_NLONGS]; \
	168	\
	169	int64_t icount_extra; /* Instructions until next timer event. */ \
	170	/* Number of cycles left, with interrupt flag in high bit. \
	171	This allows a single read-compare-cbranch-write sequence to test \
	172	for both decrementer underflow and exceptions. */ \
	173	union { \
	174	uint32_t u32; \
	175	icount_decr_u16 u16; \
	176	} icount_decr; \
	177	uint32_t can_do_io; /* nonzero if memory mapped IO is safe. */ \
	178	\
	179	/* from this point: preserved by CPU reset */ \
	180	/* ice debug support */ \
	181	QTAILQ_HEAD(breakpoints_head, CPUBreakpoint) breakpoints; \
	182	int singlestep_enabled; \
	183	\
	184	QTAILQ_HEAD(watchpoints_head, CPUWatchpoint) watchpoints; \
	185	CPUWatchpoint *watchpoint_hit; \
	186	\
	187	struct GDBRegisterState *gdb_regs; \
	188	\
	189	/* Core interrupt code */ \
	190	jmp_buf jmp_env; \
	191	int exception_index; \
	192	\
	193	CPUState next_cpu; / next CPU sharing TB cache */ \
	194	int cpu_index; /* CPU index (informative) */ \
	195	uint32_t host_tid; /* host thread ID */ \
	196	int numa_node; /* NUMA node this cpu is belonging to */ \
	197	int nr_cores; /* number of cores within this CPU package */ \
	198	int nr_threads;/* number of threads within this CPU */ \
	199	int running; /* Nonzero if cpu is currently running(usermode). */ \
	200	/* user data */ \
	201	void *opaque; \
	202	\
	203	uint32_t created; \
	204	uint32_t stop; /* Stop request */ \
	205	uint32_t stopped; /* Artificially stopped */ \
	206	struct QemuThread *thread; \
	207	struct QemuCond *halt_cond; \
	208	struct qemu_work_item queued_work_first, queued_work_last; \
	209	const char *cpu_model_str; \
	210	struct KVMState *kvm_state; \
	211	struct kvm_run *kvm_run; \
	212	int kvm_fd; \
	213	int kvm_vcpu_dirty;
	214
	215	#endif