/*
* common defines for all CPUs
- *
+ *
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 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
-#ifndef TARGET_PHYS_ADDR_BITS
-#if TARGET_LONG_BITS >= HOST_LONG_BITS
-#define TARGET_PHYS_ADDR_BITS TARGET_LONG_BITS
-#else
-#define TARGET_PHYS_ADDR_BITS HOST_LONG_BITS
-#endif
-#endif
-
#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
+typedef int16_t target_short __attribute__ ((aligned(TARGET_SHORT_ALIGNMENT)));
+typedef uint16_t target_ushort __attribute__((aligned(TARGET_SHORT_ALIGNMENT)));
+typedef int32_t target_int __attribute__((aligned(TARGET_INT_ALIGNMENT)));
+typedef uint32_t target_uint __attribute__((aligned(TARGET_INT_ALIGNMENT)));
+typedef int64_t target_llong __attribute__((aligned(TARGET_LLONG_ALIGNMENT)));
+typedef uint64_t target_ullong __attribute__((aligned(TARGET_LLONG_ALIGNMENT)));
/* target_ulong is the type of a virtual address */
#if TARGET_LONG_SIZE == 4
-typedef int32_t target_long;
-typedef uint32_t target_ulong;
+typedef int32_t target_long __attribute__((aligned(TARGET_LONG_ALIGNMENT)));
+typedef uint32_t target_ulong __attribute__((aligned(TARGET_LONG_ALIGNMENT)));
#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 "%016llx"
+typedef int64_t target_long __attribute__((aligned(TARGET_LONG_ALIGNMENT)));
+typedef uint64_t target_ulong __attribute__((aligned(TARGET_LONG_ALIGNMENT)));
+#define TARGET_FMT_lx "%016" PRIx64
+#define TARGET_FMT_ld "%" PRId64
+#define TARGET_FMT_lu "%" PRIu64
#else
#error TARGET_LONG_SIZE undefined
#endif
-/* target_phys_addr_t is the type of a physical address (its size can
- be different from 'target_ulong'). We have sizeof(target_phys_addr)
- = max(sizeof(unsigned long),
- sizeof(size_of_target_physical_address)) because we must pass a
- host pointer to memory operations in some cases */
+#define HOST_LONG_SIZE (HOST_LONG_BITS / 8)
-#if TARGET_PHYS_ADDR_BITS == 32
-typedef uint32_t target_phys_addr_t;
-#elif TARGET_PHYS_ADDR_BITS == 64
-typedef uint64_t target_phys_addr_t;
-#else
-#error TARGET_PHYS_ADDR_BITS undefined
-#endif
+#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 HOST_LONG_SIZE (HOST_LONG_BITS / 8)
+#define TB_JMP_CACHE_BITS 12
+#define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS)
-#define EXCP_INTERRUPT 256 /* async interruption */
-#define EXCP_HLT 257 /* hlt instruction reached */
-#define EXCP_DEBUG 258 /* cpu stopped after a breakpoint or singlestep */
+/* 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)
-#define MAX_BREAKPOINTS 32
+#if !defined(CONFIG_USER_ONLY)
+#define CPU_TLB_BITS 8
+#define CPU_TLB_SIZE (1 << CPU_TLB_BITS)
-#define CPU_TLB_SIZE 256
+#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 31 to TARGET_PAGE_BITS : virtual address
- bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io
- zone number
+ /* 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 address;
- /* addend to virtual address to get physical address */
- target_phys_addr_t addend;
+ 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). */ \
+ int thread_id; \
+ /* user data */ \
+ void *opaque; \
+ \
+ uint32_t created; \
+ uint32_t stop; /* Stop request */ \
+ uint32_t stopped; /* Artificially stopped */ \
+ struct QemuThread *thread; \
+ struct QemuCond *halt_cond; \
+ int thread_kicked; \
+ 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
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