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 #include "cpu.h"
  15
  16 typedef void (*gdb_syscall_complete_cb)(CPUState *cpu,
  17                                         target_ulong ret, target_ulong err);
  18
  19 /**
  20  * gdb_do_syscall:
  21  * @cb: function to call when the system call has completed
  22  * @fmt: gdb syscall format string
  23  * ...: list of arguments to interpolate into @fmt
  24  *
  25  * Send a GDB syscall request. This function will return immediately;
  26  * the callback function will be called later when the remote system
  27  * call has completed.
  28  *
  29  * @fmt should be in the 'call-id,parameter,parameter...' format documented
  30  * for the F request packet in the GDB remote protocol. A limited set of
  31  * printf-style format specifiers is supported:
  32  *   %x  - target_ulong argument printed in hex
  33  *   %lx - 64-bit argument printed in hex
  34  *   %s  - string pointer (target_ulong) and length (int) pair
  35  */
  36 void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...);
  37 /**
  38  * gdb_do_syscallv:
  39  * @cb: function to call when the system call has completed
  40  * @fmt: gdb syscall format string
  41  * @va: arguments to interpolate into @fmt
  42  *
  43  * As gdb_do_syscall, but taking a va_list rather than a variable
  44  * argument list.
  45  */
  46 void gdb_do_syscallv(gdb_syscall_complete_cb cb, const char *fmt, va_list va);
  47 int use_gdb_syscalls(void);
  48 void gdb_set_stop_cpu(CPUState *cpu);
  49 void gdb_exit(CPUArchState *, int);
  50 #ifdef CONFIG_USER_ONLY
  51 int gdb_queuesig (void);
  52 int gdb_handlesig(CPUState *, int);
  53 void gdb_signalled(CPUArchState *, int);
  54 void gdbserver_fork(CPUState *);
  55 #endif
  56 /* Get or set a register.  Returns the size of the register.  */
  57 typedef int (*gdb_reg_cb)(CPUArchState *env, uint8_t *buf, int reg);
  58 void gdb_register_coprocessor(CPUState *cpu,
  59                               gdb_reg_cb get_reg, gdb_reg_cb set_reg,
  60                               int num_regs, const char *xml, int g_pos);
  61
  62 static inline int cpu_index(CPUState *cpu)
  63 {
  64 #if defined(CONFIG_USER_ONLY)
  65     return cpu->host_tid;
  66 #else
  67     return cpu->cpu_index + 1;
  68 #endif
  69 }
  70
  71 /* The GDB remote protocol transfers values in target byte order.  This means
  72  * we can use the raw memory access routines to access the value buffer.
  73  * Conveniently, these also handle the case where the buffer is mis-aligned.
  74  */
  75
  76 static inline int gdb_get_reg8(uint8_t *mem_buf, uint8_t val)
  77 {
  78     stb_p(mem_buf, val);
  79     return 1;
  80 }
  81
  82 static inline int gdb_get_reg16(uint8_t *mem_buf, uint16_t val)
  83 {
  84     stw_p(mem_buf, val);
  85     return 2;
  86 }
  87
  88 static inline int gdb_get_reg32(uint8_t *mem_buf, uint32_t val)
  89 {
  90     stl_p(mem_buf, val);
  91     return 4;
  92 }
  93
  94 static inline int gdb_get_reg64(uint8_t *mem_buf, uint64_t val)
  95 {
  96     stq_p(mem_buf, val);
  97     return 8;
  98 }
  99
 100 #if TARGET_LONG_BITS == 64
 101 #define gdb_get_regl(buf, val) gdb_get_reg64(buf, val)
 102 #define ldtul_p(addr) ldq_p(addr)
 103 #else
 104 #define gdb_get_regl(buf, val) gdb_get_reg32(buf, val)
 105 #define ldtul_p(addr) ldl_p(addr)
 106 #endif
 107
 108 #endif
 109
 110 #ifdef CONFIG_USER_ONLY
 111 int gdbserver_start(int);
 112 #else
 113 int gdbserver_start(const char *port);
 114 #endif
 115
 116 /**
 117  * gdb_has_xml:
 118  * This is an ugly hack to cope with both new and old gdb.
 119  * If gdb sends qXfer:features:read then assume we're talking to a newish
 120  * gdb that understands target descriptions.
 121  */
 122 extern bool gdb_has_xml;
 123
 124 /* in gdbstub-xml.c, generated by scripts/feature_to_c.sh */
 125 extern const char *const xml_builtin[][2];
 126
 127 #endif