Annotation of qemu/cpu-defs.h, revision 1.1.1.10

1.1       root        1: /*
                      2:  * common defines for all CPUs
1.1.1.5   root        3:  *
1.1       root        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
1.1.1.8   root       17:  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
1.1       root       18:  */
                     19: #ifndef CPU_DEFS_H
                     20: #define CPU_DEFS_H
                     21: 
1.1.1.5   root       22: #ifndef NEED_CPU_H
                     23: #error cpu.h included from common code
                     24: #endif
                     25: 
1.1       root       26: #include "config.h"
                     27: #include <setjmp.h>
                     28: #include <inttypes.h>
1.1.1.7   root       29: #include <signal.h>
1.1       root       30: #include "osdep.h"
1.1.1.9   root       31: #include "qemu-queue.h"
1.1.1.8   root       32: #include "targphys.h"
1.1       root       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"
1.1.1.5   root       45: #define TARGET_FMT_ld "%d"
                     46: #define TARGET_FMT_lu "%u"
1.1       root       47: #elif TARGET_LONG_SIZE == 8
                     48: typedef int64_t target_long;
                     49: typedef uint64_t target_ulong;
1.1.1.3   root       50: #define TARGET_FMT_lx "%016" PRIx64
1.1.1.5   root       51: #define TARGET_FMT_ld "%" PRId64
                     52: #define TARGET_FMT_lu "%" PRIu64
1.1       root       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 */
1.1.1.2   root       62: #define EXCP_HALTED     0x10003 /* cpu is halted (waiting for external event) */
1.1       root       63: 
1.1.1.2   root       64: #define TB_JMP_CACHE_BITS 12
                     65: #define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
                     66: 
1.1.1.4   root       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: 
1.1.1.10! root       75: #if !defined(CONFIG_USER_ONLY)
1.1.1.2   root       76: #define CPU_TLB_BITS 8
                     77: #define CPU_TLB_SIZE (1 << CPU_TLB_BITS)
1.1       root       78: 
1.1.1.10! root       79: #if HOST_LONG_BITS == 32 && TARGET_LONG_BITS == 32
1.1.1.6   root       80: #define CPU_TLB_ENTRY_BITS 4
                     81: #else
                     82: #define CPU_TLB_ENTRY_BITS 5
                     83: #endif
                     84: 
1.1       root       85: typedef struct CPUTLBEntry {
1.1.1.6   root       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.
1.1       root       89:        bit 3                      : indicates that the entry is invalid
                     90:        bit 2..0                   : zero
                     91:     */
1.1.1.5   root       92:     target_ulong addr_read;
                     93:     target_ulong addr_write;
                     94:     target_ulong addr_code;
1.1.1.10! root       95:     /* Addend to virtual address to get host address.  IO accesses
1.1.1.6   root       96:        use the corresponding iotlb value.  */
1.1.1.10! root       97:     unsigned long addend;
1.1.1.6   root       98:     /* padding to get a power of two size */
                     99:     uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) - 
                    100:                   (sizeof(target_ulong) * 3 + 
1.1.1.10! root      101:                    ((-sizeof(target_ulong) * 3) & (sizeof(unsigned long) - 1)) + 
        !           102:                    sizeof(unsigned long))];
1.1       root      103: } CPUTLBEntry;
                    104: 
1.1.1.10! root      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: 
1.1.1.9   root      121: #ifdef HOST_WORDS_BIGENDIAN
1.1.1.6   root      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;
1.1.1.10! root      135: struct qemu_work_item;
1.1.1.6   root      136: 
                    137: typedef struct CPUBreakpoint {
                    138:     target_ulong pc;
                    139:     int flags; /* BP_* */
1.1.1.9   root      140:     QTAILQ_ENTRY(CPUBreakpoint) entry;
1.1.1.6   root      141: } CPUBreakpoint;
                    142: 
                    143: typedef struct CPUWatchpoint {
                    144:     target_ulong vaddr;
                    145:     target_ulong len_mask;
                    146:     int flags; /* BP_* */
1.1.1.9   root      147:     QTAILQ_ENTRY(CPUWatchpoint) entry;
1.1.1.6   root      148: } CPUWatchpoint;
                    149: 
                    150: #define CPU_TEMP_BUF_NLONGS 128
1.1.1.2   root      151: #define CPU_COMMON                                                      \
                    152:     struct TranslationBlock *current_tb; /* currently executing TB  */  \
                    153:     /* soft mmu support */                                              \
1.1.1.6   root      154:     /* in order to avoid passing too many arguments to the MMIO         \
                    155:        helpers, we store some rarely used information in the CPU        \
1.1.1.2   root      156:        context) */                                                      \
1.1.1.6   root      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;                                         \
1.1.1.7   root      163:     volatile sig_atomic_t exit_request;                                 \
1.1.1.10! root      164:     CPU_COMMON_TLB                                                      \
1.1.1.2   root      165:     struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE];           \
1.1.1.6   root      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.  */     \
1.1.1.2   root      178:                                                                         \
                    179:     /* from this point: preserved by CPU reset */                       \
                    180:     /* ice debug support */                                             \
1.1.1.9   root      181:     QTAILQ_HEAD(breakpoints_head, CPUBreakpoint) breakpoints;            \
1.1.1.2   root      182:     int singlestep_enabled;                                             \
                    183:                                                                         \
1.1.1.9   root      184:     QTAILQ_HEAD(watchpoints_head, CPUWatchpoint) watchpoints;            \
1.1.1.6   root      185:     CPUWatchpoint *watchpoint_hit;                                      \
                    186:                                                                         \
                    187:     struct GDBRegisterState *gdb_regs;                                  \
                    188:                                                                         \
                    189:     /* Core interrupt code */                                           \
                    190:     jmp_buf jmp_env;                                                    \
                    191:     int exception_index;                                                \
1.1.1.5   root      192:                                                                         \
1.1.1.8   root      193:     CPUState *next_cpu; /* next CPU sharing TB cache */                 \
1.1.1.2   root      194:     int cpu_index; /* CPU index (informative) */                        \
1.1.1.8   root      195:     uint32_t host_tid; /* host thread ID */                             \
                    196:     int numa_node; /* NUMA node this cpu is belonging to  */            \
1.1.1.9   root      197:     int nr_cores;  /* number of cores within this CPU package */        \
                    198:     int nr_threads;/* number of threads within this CPU */              \
1.1.1.6   root      199:     int running; /* Nonzero if cpu is currently running(usermode).  */  \
1.1.1.2   root      200:     /* user data */                                                     \
1.1.1.5   root      201:     void *opaque;                                                       \
                    202:                                                                         \
1.1.1.8   root      203:     uint32_t created;                                                   \
1.1.1.10! root      204:     uint32_t stop;   /* Stop request */                                 \
        !           205:     uint32_t stopped; /* Artificially stopped */                        \
1.1.1.8   root      206:     struct QemuThread *thread;                                          \
                    207:     struct QemuCond *halt_cond;                                         \
1.1.1.10! root      208:     struct qemu_work_item *queued_work_first, *queued_work_last;        \
1.1.1.6   root      209:     const char *cpu_model_str;                                          \
                    210:     struct KVMState *kvm_state;                                         \
                    211:     struct kvm_run *kvm_run;                                            \
1.1.1.10! root      212:     int kvm_fd;                                                         \
        !           213:     int kvm_vcpu_dirty;
1.1.1.2   root      214: 
1.1       root      215: #endif

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