include/exec/gdbstub.h

   1 #ifndef GDBSTUB_H
   2 #define GDBSTUB_H
   3
   4 #define DEFAULT_GDBSTUB_PORT "1234"
   5
   6 /* GDB breakpoint/watchpoint types */
   7 #define GDB_BREAKPOINT_SW        0
   8 #define GDB_BREAKPOINT_HW        1
   9 #define GDB_WATCHPOINT_WRITE     2
  10 #define GDB_WATCHPOINT_READ      3
  11 #define GDB_WATCHPOINT_ACCESS    4
  12
  13 #ifdef NEED_CPU_H
  14 typedef void (*gdb_syscall_complete_cb)(CPUState *cpu,
  15                                         target_ulong ret, target_ulong err);
  16
  17 void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...);
  18 int use_gdb_syscalls(void);
  19 void gdb_set_stop_cpu(CPUState *cpu);
  20 void gdb_exit(CPUArchState *, int);
  21 #ifdef CONFIG_USER_ONLY
  22 int gdb_queuesig (void);
  23 int gdb_handlesig(CPUState *, int);
  24 void gdb_signalled(CPUArchState *, int);
  25 void gdbserver_fork(CPUArchState *);
  26 #endif
  27 /* Get or set a register.  Returns the size of the register.  */
  28 typedef int (*gdb_reg_cb)(CPUArchState *env, uint8_t *buf, int reg);
  29 void gdb_register_coprocessor(CPUState *cpu,
  30                               gdb_reg_cb get_reg, gdb_reg_cb set_reg,
  31                               int num_regs, const char *xml, int g_pos);
  32
  33 static inline int cpu_index(CPUState *cpu)
  34 {
  35 #if defined(CONFIG_USER_ONLY)
  36     return cpu->host_tid;
  37 #else
  38     return cpu->cpu_index + 1;
  39 #endif
  40 }
  41
  42 /* The GDB remote protocol transfers values in target byte order.  This means
  43  * we can use the raw memory access routines to access the value buffer.
  44  * Conveniently, these also handle the case where the buffer is mis-aligned.
  45  */
  46
  47 static inline int gdb_get_reg8(uint8_t *mem_buf, uint8_t val)
  48 {
  49     stb_p(mem_buf, val);
  50     return 1;
  51 }
  52
  53 static inline int gdb_get_reg16(uint8_t *mem_buf, uint16_t val)
  54 {
  55     stw_p(mem_buf, val);
  56     return 2;
  57 }
  58
  59 static inline int gdb_get_reg32(uint8_t *mem_buf, uint32_t val)
  60 {
  61     stl_p(mem_buf, val);
  62     return 4;
  63 }
  64
  65 static inline int gdb_get_reg64(uint8_t *mem_buf, uint64_t val)
  66 {
  67     stq_p(mem_buf, val);
  68     return 8;
  69 }
  70
  71 #if TARGET_LONG_BITS == 64
  72 #define gdb_get_regl(buf, val) gdb_get_reg64(buf, val)
  73 #define ldtul_p(addr) ldq_p(addr)
  74 #else
  75 #define gdb_get_regl(buf, val) gdb_get_reg32(buf, val)
  76 #define ldtul_p(addr) ldl_p(addr)
  77 #endif
  78
  79 #endif
  80
  81 #ifdef CONFIG_USER_ONLY
  82 int gdbserver_start(int);
  83 #else
  84 int gdbserver_start(const char *port);
  85 #endif
  86
  87 /**
  88  * gdb_has_xml:
  89  * This is an ugly hack to cope with both new and old gdb.
  90  * If gdb sends qXfer:features:read then assume we're talking to a newish
  91  * gdb that understands target descriptions.
  92  */
  93 extern bool gdb_has_xml;
  94
  95 /* in gdbstub-xml.c, generated by scripts/feature_to_c.sh */
  96 extern const char *const xml_builtin[][2];
  97
  98 /* Command line option defining whether semihosting should go via gdb or not */
  99 extern int semihosting_target;
 100 #define SEMIHOSTING_TARGET_AUTO     0
 101 #define SEMIHOSTING_TARGET_NATIVE   1
 102 #define SEMIHOSTING_TARGET_GDB      2
 103
 104 #endif