kernel/fiasco/src/jdb/ia32/jdb_trace_set-ia32-ux.cpp

   1 IMPLEMENTATION:
   2 #include "syscalls.h"
   3 #include "idt.h"
   4 #include "jdb.h"
   5
   6 extern "C" void entry_sys_ipc_log (void);
   7 extern "C" void entry_sys_ipc_c (void);
   8 extern "C" void entry_sys_ipc (void);
   9 extern "C" void entry_sys_fast_ipc_log (void);
  10 extern "C" void entry_sys_fast_ipc_c (void);
  11 extern "C" void entry_sys_fast_ipc (void);
  12
  13 extern "C" void sys_ipc_wrapper (void);
  14 extern "C" void ipc_short_cut_wrapper (void);
  15 extern "C" void sys_ipc_log_wrapper (void);
  16 extern "C" void sys_ipc_trace_wrapper (void);
  17
  18 typedef void (Fast_entry_func)(void);
  19
  20 PUBLIC static
  21 void
  22 Jdb_set_trace::ia32_set_fast_entry(unsigned cpu, void *entry)
  23 {
  24   Cpu::cpus.cpu(cpu).set_fast_entry((Fast_entry_func*)entry);
  25 }
  26
  27 struct Set_fast_entry
  28 {
  29   void *entry;
  30   Set_fast_entry(Fast_entry_func *entry) : entry((void*)entry) {}
  31   void operator () (unsigned cpu) const
  32   { Jdb::remote_work(cpu, Jdb_set_trace::ia32_set_fast_entry, entry, true); }
  33 };
  34
  35 static
  36 void
  37 Jdb_set_trace::set_ipc_vector()
  38 {
  39   void (*int30_entry)(void);
  40   void (*fast_entry)(void);
  41
  42   if (Jdb_ipc_trace::_trace || Jdb_ipc_trace::_slow_ipc ||
  43       Jdb_ipc_trace::_log   || Jdb_nextper_trace::_log)
  44     {
  45       int30_entry = entry_sys_ipc_log;
  46       fast_entry  = entry_sys_fast_ipc_log;
  47     }
  48   else
  49     {
  50       int30_entry = entry_sys_ipc_c;
  51       fast_entry  = entry_sys_fast_ipc_c;
  52     }
  53
  54   Idt::set_entry(0x30, (Address) int30_entry, true);
  55   Jdb::foreach_cpu(Set_fast_entry(fast_entry));
  56
  57   if (Jdb_ipc_trace::_trace)
  58     syscall_table[0] = sys_ipc_trace_wrapper;
  59   else if ((Jdb_ipc_trace::_log && !Jdb_ipc_trace::_slow_ipc) ||
  60            Jdb_nextper_trace::_log)
  61     syscall_table[0] = sys_ipc_log_wrapper;
  62   else
  63     syscall_table[0] = sys_ipc_wrapper;
  64 }
  65
  66 PUBLIC static FIASCO_NOINLINE
  67 void
  68 Jdb_set_trace::set_cpath()
  69 {
  70   Jdb_ipc_trace::_cpath = 0;
  71   BEGIN_LOG_EVENT("Context switches", "csw", Tb_entry_empty)
  72   Jdb_ipc_trace::_cpath = 1;
  73   END_LOG_EVENT;
  74   BEGIN_LOG_EVENT("Shortcut", "sc", Tb_entry_empty)
  75   Jdb_ipc_trace::_cpath = 1;
  76   END_LOG_EVENT;
  77   set_ipc_vector();
  78 }
  79
  80 void
  81 jdb_trace_set_cpath(void)
  82 {
  83   Jdb_set_trace::set_cpath();
  84 }
  85
  86 IMPLEMENT void
  87 Jdb_set_trace::next_preiod_tracing(bool enable)
  88 {
  89   if (enable)
  90     Jdb_nextper_trace::_log = 1;
  91   else
  92     Jdb_nextper_trace::_log = 0;
  93
  94   set_ipc_vector();
  95 }
  96
  97 IMPLEMENT void
  98 Jdb_set_trace::page_fault_tracing(bool /*enable*/)
  99 {
 100 }
 101
 102 IMPLEMENT void
 103 Jdb_set_trace::ipc_tracing(Mode mode)
 104 {
 105   switch (mode)
 106     {
 107     case Off:
 108       Jdb_ipc_trace::_trace = 0;
 109       Jdb_ipc_trace::_log = 0;
 110       Jdb_ipc_trace::_cshortcut = 0;
 111       Jdb_ipc_trace::_slow_ipc = 0;
 112       break;
 113     case Log:
 114       Jdb_ipc_trace::_trace = 0;
 115       Jdb_ipc_trace::_log = 1;
 116       Jdb_ipc_trace::_log_to_buf = 0;
 117       Jdb_ipc_trace::_cshortcut = 0;
 118       Jdb_ipc_trace::_slow_ipc = 0;
 119       break;
 120     case Log_to_buf:
 121       Jdb_ipc_trace::_trace = 0;
 122       Jdb_ipc_trace::_log = 1;
 123       Jdb_ipc_trace::_log_to_buf = 1;
 124       Jdb_ipc_trace::_cshortcut = 0;
 125       Jdb_ipc_trace::_slow_ipc = 0;
 126       break;
 127     case Trace:
 128       Jdb_ipc_trace::_trace = 1;
 129       Jdb_ipc_trace::_cshortcut = 0;
 130       Jdb_ipc_trace::_log = 0;
 131       Jdb_ipc_trace::_slow_ipc = 0;
 132       break;
 133     case Use_c_short_cut:
 134       Jdb_ipc_trace::_cshortcut = 1;
 135       break;
 136     case Use_slow_path:
 137       Jdb_ipc_trace::_slow_ipc = 1;
 138       break;
 139     }
 140   set_ipc_vector();
 141 }
 142
 143
 144 static
 145 void
 146 Jdb_set_trace::set_unmap_vector()
 147 {
 148 }
 149
 150 IMPLEMENT void
 151 Jdb_set_trace::unmap_tracing(bool /*enable*/)
 152 {
 153 }