3d57eb5b |
1 | /***************************************************************************** |
38f24d5c |
2 | * ltt-usertrace.h |
3d57eb5b |
3 | * |
38f24d5c |
4 | * LTT userspace tracing header |
3d57eb5b |
5 | * |
6 | * Mathieu Desnoyers, March 2006 |
7 | */ |
8 | |
38f24d5c |
9 | #ifndef _LTT_USERTRACE_H |
10 | #define _LTT_USERTRACE_H |
3d57eb5b |
11 | |
12 | #include <errno.h> |
13 | #include <syscall.h> |
3d57eb5b |
14 | #include <string.h> |
3d57eb5b |
15 | #include <stdint.h> |
4359c2bb |
16 | #include <sys/types.h> |
3a4541a5 |
17 | |
895ad115 |
18 | #ifdef __cplusplus |
19 | extern "C" { |
20 | #endif |
21 | |
22 | |
3a4541a5 |
23 | #define inline inline __attribute__((always_inline)) |
24 | |
60009e26 |
25 | #if defined(__powerpc__) || defined(__powerpc64__) |
3a4541a5 |
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 |
ce22b1be |
36 | #elif defined(__x86_64__) |
4b18c4a6 |
37 | #include <ltt/kernelutils-x86_64.h> |
38 | #elif defined(__i386__) |
39 | #include <ltt/kernelutils-i386.h> |
7922f60f |
40 | #elif defined(__arm__) |
41 | #include <ltt/kernelutils-arm.h> |
4d8195bc |
42 | #elif defined(__SH4__) |
43 | #include <ltt/kernelutils-sh.h> |
60009e26 |
44 | #else |
4b18c4a6 |
45 | #error "Unsupported architecture" |
60009e26 |
46 | #endif |
3d57eb5b |
47 | |
48 | #ifndef min |
49 | #define min(a,b) ((a)<(b)?(a):(b)) |
50 | #endif |
51 | |
d86395c3 |
52 | #ifdef i386 |
3295df23 |
53 | #define __NR_ltt_trace_generic 328 |
54 | #define __NR_ltt_register_generic 329 |
3d57eb5b |
55 | #undef NR_syscalls |
3295df23 |
56 | #define NR_syscalls 330 |
d86395c3 |
57 | #endif |
58 | |
ce22b1be |
59 | #ifdef __x86_64__ |
3295df23 |
60 | #define __NR_ltt_trace_generic 286 |
61 | #define __NR_ltt_register_generic 287 |
ce22b1be |
62 | #undef NR_syscalls |
3295df23 |
63 | #define NR_syscalls 288 |
ce22b1be |
64 | #endif |
65 | |
3a4541a5 |
66 | #ifdef __powerpc__ |
3295df23 |
67 | #define __NR_ltt_trace_generic 309 |
68 | #define __NR_ltt_register_generic 310 |
3a4541a5 |
69 | #undef NR_syscalls |
3295df23 |
70 | #define NR_syscalls 311 |
3a4541a5 |
71 | #endif |
72 | |
73 | #ifdef __powerpc64__ |
3295df23 |
74 | #define __NR_ltt_trace_generic 309 |
75 | #define __NR_ltt_register_generic 310 |
d86395c3 |
76 | #undef NR_syscalls |
3295df23 |
77 | #define NR_syscalls 311 |
d86395c3 |
78 | #endif |
3d57eb5b |
79 | |
7922f60f |
80 | #ifdef __arm__ |
3295df23 |
81 | #define __NR_ltt_trace_generic 352 |
82 | #define __NR_ltt_register_generic 353 |
7922f60f |
83 | #undef NR_syscalls |
3295df23 |
84 | #define NR_syscalls 354 |
7922f60f |
85 | #endif |
3a4541a5 |
86 | |
3d57eb5b |
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 | |
972a52cf |
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 |
4ea155a2 |
101 | |
3d57eb5b |
102 | typedef unsigned int ltt_facility_t; |
103 | |
104 | struct user_facility_info { |
105 | char name[FACNAME_LEN]; |
505932fe |
106 | uint32_t num_events; |
107 | uint32_t alignment; |
3d57eb5b |
108 | uint32_t checksum; |
505932fe |
109 | uint32_t int_size; |
110 | uint32_t long_size; |
111 | uint32_t pointer_size; |
cf145ed2 |
112 | uint32_t size_t_size; |
3d57eb5b |
113 | }; |
5ecaa1ab |
114 | #if 0 |
e90c7b86 |
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) |
5ecaa1ab |
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__) |
3d57eb5b |
125 | |
895ad115 |
126 | static inline unsigned int __attribute__((no_instrument_function)) |
127 | ltt_align(size_t align_drift, size_t size_of_type); |
128 | |
3d57eb5b |
129 | #ifndef LTT_PACK |
130 | /* Calculate the offset needed to align the type */ |
895ad115 |
131 | static inline unsigned int |
bf48b748 |
132 | ltt_align(size_t align_drift, size_t size_of_type) |
3d57eb5b |
133 | { |
134 | size_t alignment = min(sizeof(void*), size_of_type); |
135 | |
136 | return ((alignment - align_drift) & (alignment-1)); |
137 | } |
8a9103df |
138 | #define LTT_ALIGN |
3d57eb5b |
139 | #else |
895ad115 |
140 | static inline unsigned int ltt_align(size_t align_drift, size_t size_of_type) |
3d57eb5b |
141 | { |
142 | return 0; |
143 | } |
8a9103df |
144 | #define LTT_ALIGN __attribute__((packed)) |
3d57eb5b |
145 | #endif //LTT_PACK |
146 | |
895ad115 |
147 | #ifdef __cplusplus |
148 | } /* end of extern "C" */ |
149 | #endif |
150 | |
976db1b3 |
151 | #ifdef LTT_TRACE_FAST |
152 | #include <ltt/ltt-usertrace-fast.h> |
153 | #endif //LTT_TRACE_FAST |
154 | |
38f24d5c |
155 | #endif //_LTT_USERTRACE_H |