#define QEMU_CPU_H
#include <signal.h>
+#include <setjmp.h>
#include "hw/qdev-core.h"
+#include "disas/bfd.h"
#include "exec/hwaddr.h"
+#include "exec/memattrs.h"
#include "qemu/queue.h"
#include "qemu/thread.h"
#include "qemu/tls.h"
#define TYPE_CPU "cpu"
-#define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU)
+/* Since this macro is used a lot in hot code paths and in conjunction with
+ * FooCPU *foo_env_get_cpu(), we deviate from usual QOM practice by using
+ * an unchecked cast.
+ */
+#define CPU(obj) ((CPUState *)(obj))
+
#define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU)
#define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU)
* @has_work: Callback for checking if there is work to do.
* @do_interrupt: Callback for interrupt handling.
* @do_unassigned_access: Callback for unassigned access handling.
+ * @do_unaligned_access: Callback for unaligned access handling, if
+ * the target defines #ALIGNED_ONLY.
+ * @virtio_is_big_endian: Callback to return %true if a CPU which supports
+ * runtime configurable endianness is currently big-endian. Non-configurable
+ * CPUs can use the default implementation of this method. This method should
+ * not be used by any callers other than the pre-1.0 virtio devices.
* @memory_rw_debug: Callback for GDB memory access.
* @dump_state: Callback for dumping state.
* @dump_statistics: Callback for dumping statistics.
* @get_phys_page_debug: Callback for obtaining a physical address.
* @gdb_read_register: Callback for letting GDB read a register.
* @gdb_write_register: Callback for letting GDB write a register.
+ * @debug_excp_handler: Callback for handling debug exceptions.
+ * @write_elf64_note: Callback for writing a CPU-specific ELF note to a
+ * 64-bit VM coredump.
+ * @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
+ * note to a 32-bit VM coredump.
+ * @write_elf32_note: Callback for writing a CPU-specific ELF note to a
+ * 32-bit VM coredump.
+ * @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
+ * note to a 32-bit VM coredump.
* @vmsd: State description for migration.
* @gdb_num_core_regs: Number of core registers accessible to GDB.
* @gdb_core_xml_file: File name for core registers GDB XML description.
+ * @gdb_stop_before_watchpoint: Indicates whether GDB expects the CPU to stop
+ * before the insn which triggers a watchpoint rather than after it.
+ * @cpu_exec_enter: Callback for cpu_exec preparation.
+ * @cpu_exec_exit: Callback for cpu_exec cleanup.
+ * @cpu_exec_interrupt: Callback for processing interrupts in cpu_exec.
+ * @disas_set_info: Setup architecture specific components of disassembly info
*
* Represents a CPU family or model.
*/
bool (*has_work)(CPUState *cpu);
void (*do_interrupt)(CPUState *cpu);
CPUUnassignedAccess do_unassigned_access;
+ void (*do_unaligned_access)(CPUState *cpu, vaddr addr,
+ int is_write, int is_user, uintptr_t retaddr);
+ bool (*virtio_is_big_endian)(CPUState *cpu);
int (*memory_rw_debug)(CPUState *cpu, vaddr addr,
uint8_t *buf, int len, bool is_write);
void (*dump_state)(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
hwaddr (*get_phys_page_debug)(CPUState *cpu, vaddr addr);
int (*gdb_read_register)(CPUState *cpu, uint8_t *buf, int reg);
int (*gdb_write_register)(CPUState *cpu, uint8_t *buf, int reg);
+ void (*debug_excp_handler)(CPUState *cpu);
int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu,
int cpuid, void *opaque);
const struct VMStateDescription *vmsd;
int gdb_num_core_regs;
const char *gdb_core_xml_file;
+ bool gdb_stop_before_watchpoint;
+
+ void (*cpu_exec_enter)(CPUState *cpu);
+ void (*cpu_exec_exit)(CPUState *cpu);
+ bool (*cpu_exec_interrupt)(CPUState *cpu, int interrupt_request);
+
+ void (*disas_set_info)(CPUState *cpu, disassemble_info *info);
} CPUClass;
#ifdef HOST_WORDS_BIGENDIAN
} icount_decr_u16;
#endif
+typedef struct CPUBreakpoint {
+ vaddr pc;
+ int flags; /* BP_* */
+ QTAILQ_ENTRY(CPUBreakpoint) entry;
+} CPUBreakpoint;
+
+typedef struct CPUWatchpoint {
+ vaddr vaddr;
+ vaddr len;
+ vaddr hitaddr;
+ MemTxAttrs hitattrs;
+ int flags; /* BP_* */
+ QTAILQ_ENTRY(CPUWatchpoint) entry;
+} CPUWatchpoint;
+
struct KVMState;
struct kvm_run;
* @icount_decr: 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.
- * @can_do_io: Nonzero if memory-mapped IO is safe.
+ * @can_do_io: Nonzero if memory-mapped IO is safe. Deterministic execution
+ * requires that IO only be performed on the last instruction of a TB
+ * so that interrupts take effect immediately.
* @env_ptr: Pointer to subclass-specific CPUArchState field.
* @current_tb: Currently executing TB.
* @gdb_regs: Additional GDB registers.
* @gdb_num_regs: Number of total registers accessible to GDB.
* @gdb_num_g_regs: Number of registers in GDB 'g' packets.
* @next_cpu: Next CPU sharing TB cache.
+ * @opaque: User data.
* @mem_io_pc: Host Program Counter at which the memory was accessed.
* @mem_io_vaddr: Target virtual address at which the memory was accessed.
* @kvm_fd: vCPU file descriptor for KVM.
bool stop;
bool stopped;
volatile sig_atomic_t exit_request;
- volatile sig_atomic_t tcg_exit_req;
uint32_t interrupt_request;
int singlestep_enabled;
int64_t icount_extra;
+ sigjmp_buf jmp_env;
AddressSpace *as;
+ struct AddressSpaceDispatch *memory_dispatch;
MemoryListener *tcg_as_listener;
void *env_ptr; /* CPUArchState */
int gdb_num_g_regs;
QTAILQ_ENTRY(CPUState) node;
+ /* ice debug support */
+ QTAILQ_HEAD(breakpoints_head, CPUBreakpoint) breakpoints;
+
+ QTAILQ_HEAD(watchpoints_head, CPUWatchpoint) watchpoints;
+ CPUWatchpoint *watchpoint_hit;
+
+ void *opaque;
+
/* In order to avoid passing too many arguments to the MMIO helpers,
* we store some rarely used information in the CPU context.
*/
icount_decr_u16 u16;
} icount_decr;
uint32_t can_do_io;
+ int32_t exception_index; /* used by m68k TCG */
+
+ /* Note that this is accessed at the start of every TB via a negative
+ offset from AREG0. Leave this field at the end so as to make the
+ (absolute value) offset as small as possible. This reduces code
+ size, especially for hosts without large memory offsets. */
+ volatile sig_atomic_t tcg_exit_req;
};
QTAILQ_HEAD(CPUTailQ, CPUState);
#define CPU_FOREACH(cpu) QTAILQ_FOREACH(cpu, &cpus, node)
#define CPU_FOREACH_SAFE(cpu, next_cpu) \
QTAILQ_FOREACH_SAFE(cpu, &cpus, node, next_cpu)
+#define CPU_FOREACH_REVERSE(cpu) \
+ QTAILQ_FOREACH_REVERSE(cpu, &cpus, CPUTailQ, node)
#define first_cpu QTAILQ_FIRST(&cpus)
DECLARE_TLS(CPUState *, current_cpu);
#endif /* USER_ONLY */
-#ifndef CONFIG_USER_ONLY
-
+#ifdef CONFIG_SOFTMMU
static inline void cpu_unassigned_access(CPUState *cpu, hwaddr addr,
bool is_write, bool is_exec,
int opaque, unsigned size)
}
}
+static inline void cpu_unaligned_access(CPUState *cpu, vaddr addr,
+ int is_write, int is_user,
+ uintptr_t retaddr)
+{
+ CPUClass *cc = CPU_GET_CLASS(cpu);
+
+ cc->do_unaligned_access(cpu, addr, is_write, is_user, retaddr);
+}
#endif
+/**
+ * cpu_set_pc:
+ * @cpu: The CPU to set the program counter for.
+ * @addr: Program counter value.
+ *
+ * Sets the program counter for a CPU.
+ */
+static inline void cpu_set_pc(CPUState *cpu, vaddr addr)
+{
+ CPUClass *cc = CPU_GET_CLASS(cpu);
+
+ cc->set_pc(cpu, addr);
+}
+
/**
* cpu_reset_interrupt:
* @cpu: The CPU to clear the interrupt on.
*/
void cpu_single_step(CPUState *cpu, int enabled);
+/* Breakpoint/watchpoint flags */
+#define BP_MEM_READ 0x01
+#define BP_MEM_WRITE 0x02
+#define BP_MEM_ACCESS (BP_MEM_READ | BP_MEM_WRITE)
+#define BP_STOP_BEFORE_ACCESS 0x04
+/* 0x08 currently unused */
+#define BP_GDB 0x10
+#define BP_CPU 0x20
+#define BP_WATCHPOINT_HIT_READ 0x40
+#define BP_WATCHPOINT_HIT_WRITE 0x80
+#define BP_WATCHPOINT_HIT (BP_WATCHPOINT_HIT_READ | BP_WATCHPOINT_HIT_WRITE)
+
+int cpu_breakpoint_insert(CPUState *cpu, vaddr pc, int flags,
+ CPUBreakpoint **breakpoint);
+int cpu_breakpoint_remove(CPUState *cpu, vaddr pc, int flags);
+void cpu_breakpoint_remove_by_ref(CPUState *cpu, CPUBreakpoint *breakpoint);
+void cpu_breakpoint_remove_all(CPUState *cpu, int mask);
+
+int cpu_watchpoint_insert(CPUState *cpu, vaddr addr, vaddr len,
+ int flags, CPUWatchpoint **watchpoint);
+int cpu_watchpoint_remove(CPUState *cpu, vaddr addr,
+ vaddr len, int flags);
+void cpu_watchpoint_remove_by_ref(CPUState *cpu, CPUWatchpoint *watchpoint);
+void cpu_watchpoint_remove_all(CPUState *cpu, int mask);
+
+void QEMU_NORETURN cpu_abort(CPUState *cpu, const char *fmt, ...)
+ GCC_FMT_ATTR(2, 3);
+void cpu_exec_exit(CPUState *cpu);
+
#ifdef CONFIG_SOFTMMU
extern const struct VMStateDescription vmstate_cpu_common;
#else