obsolete/ltt-usertrace/ltt/ltt-usertrace.h

   1 /*****************************************************************************
   2  * ltt-usertrace.h
   3  *
   4  * LTT userspace tracing header
   5  *
   6  * Mathieu Desnoyers, March 2006
   7  */
   8
   9 #ifndef _LTT_USERTRACE_H
  10 #define _LTT_USERTRACE_H
  11
  12 #include <errno.h>
  13 #include <syscall.h>
  14 #include <string.h>
  15 #include <stdint.h>
  16 #include <sys/types.h>
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22
  23 #define inline inline __attribute__((always_inline))
  24
  25 #if defined(__powerpc__) || defined(__powerpc64__)
  26 #ifdef __powerpc64__
  27 #include <ltt/atomic-ppc64.h>
  28 #include <ltt/system-ppc64.h>
  29 #include <asm/timex.h>
  30 #else
  31 #include <ltt/ppc_asm-ppc.h>
  32 #include <ltt/atomic-ppc.h>
  33 #include <ltt/system-ppc.h>
  34 #include <ltt/timex-ppc.h>
  35 #endif
  36 #elif defined(__x86_64__)
  37 #include <ltt/kernelutils-x86_64.h>
  38 #elif defined(__i386__)
  39 #include <ltt/kernelutils-i386.h>
  40 #elif defined(__arm__)
  41 #include <ltt/kernelutils-arm.h>
  42 #elif defined(__SH4__)
  43 #include <ltt/kernelutils-sh.h>
  44 #else
  45 #error "Unsupported architecture"
  46 #endif
  47
  48 #ifndef min
  49 #define min(a,b) ((a)<(b)?(a):(b))
  50 #endif
  51
  52 #ifdef i386
  53 #define __NR_ltt_trace_generic  328
  54 #define __NR_ltt_register_generic       329
  55 #undef NR_syscalls
  56 #define NR_syscalls 330
  57 #endif
  58
  59 #ifdef __x86_64__
  60 #define __NR_ltt_trace_generic  286
  61 #define __NR_ltt_register_generic       287
  62 #undef NR_syscalls
  63 #define NR_syscalls 288
  64 #endif
  65
  66 #ifdef __powerpc__
  67 #define __NR_ltt_trace_generic  309
  68 #define __NR_ltt_register_generic       310
  69 #undef NR_syscalls
  70 #define NR_syscalls 311
  71 #endif
  72
  73 #ifdef __powerpc64__
  74 #define __NR_ltt_trace_generic  309
  75 #define __NR_ltt_register_generic       310
  76 #undef NR_syscalls
  77 #define NR_syscalls 311
  78 #endif
  79
  80 #ifdef __arm__
  81 #define __NR_ltt_trace_generic  352
  82 #define __NR_ltt_register_generic       353
  83 #undef NR_syscalls
  84 #define NR_syscalls 354
  85 #endif
  86
  87 //FIXME : setup for MIPS
  88
  89 #ifndef _LIBC
  90 // Put in bits/syscall.h
  91 #define SYS_ltt_trace_generic   __NR_ltt_trace_generic
  92 #define SYS_ltt_register_generic        __NR_ltt_register_generic
  93 #endif
  94
  95 #define FACNAME_LEN 32
  96
  97 /* LTT userspace tracing is non blocking by default when buffers are full */
  98 #ifndef LTT_BLOCKING
  99 #define LTT_BLOCKING 0
 100 #endif //LTT_BLOCKING
 101
 102 typedef unsigned int ltt_facility_t;
 103
 104 struct user_facility_info {
 105   char name[FACNAME_LEN];
 106   uint32_t num_events;
 107   uint32_t alignment;
 108   uint32_t checksum;
 109   uint32_t int_size;
 110   uint32_t long_size;
 111   uint32_t pointer_size;
 112   uint32_t size_t_size;
 113 };
 114 #if 0
 115 static inline __attribute__((no_instrument_function))
 116 _syscall5(int, ltt_trace_generic, unsigned int, facility_id,
 117         unsigned int, event_id, void *, data, size_t, data_size, int, blocking)
 118 static inline __attribute__((no_instrument_function))
 119 _syscall2(int, ltt_register_generic, unsigned int *, facility_id,
 120         const struct user_facility_info *, info)
 121 #endif //0
 122
 123 #define ltt_register_generic(...)  syscall(__NR_ltt_register_generic, __VA_ARGS__)
 124 #define ltt_trace_generic(...)  syscall(__NR_ltt_trace_generic, __VA_ARGS__)
 125
 126 static inline unsigned int __attribute__((no_instrument_function))
 127         ltt_align(size_t align_drift, size_t size_of_type);
 128
 129 #ifndef LTT_PACK
 130 /* Calculate the offset needed to align the type */
 131 static inline unsigned int
 132         ltt_align(size_t align_drift, size_t size_of_type)
 133 {
 134   size_t alignment = min(sizeof(void*), size_of_type);
 135
 136   return ((alignment - align_drift) & (alignment-1));
 137 }
 138 #define LTT_ALIGN
 139 #else
 140 static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type)
 141 {
 142   return 0;
 143 }
 144 #define LTT_ALIGN __attribute__((packed))
 145 #endif //LTT_PACK
 146
 147 #ifdef __cplusplus
 148 } /* end of extern "C" */
 149 #endif
 150
 151 #ifdef LTT_TRACE_FAST
 152 #include <ltt/ltt-usertrace-fast.h>
 153 #endif //LTT_TRACE_FAST
 154
 155 #endif //_LTT_USERTRACE_H