#include <string.h>
#include <sys/types.h>
-#if _LP64
-#define STAP_PROBE_STRUCT_ARG(arg) \
- __uint64_t arg
-#else
-#define STAP_PROBE_STRUCT_ARG(arg) \
- long arg __attribute__ ((aligned(8)))
-#endif
-
-#define STAP_SENTINEL 0x31425250
-
-#define STAP_PROBE_STRUCT(probe,argc) \
-struct _probe_ ## probe \
-{ \
- int probe_type; \
- STAP_PROBE_STRUCT_ARG (probe_name); \
- STAP_PROBE_STRUCT_ARG (probe_arg); \
-}; \
-static char probe ## _ ## probe_name [] \
- __attribute__ ((section (".probes"))) \
- = #probe; \
-__extension__ static volatile struct _probe_ ## probe _probe_ ## probe __attribute__ ((section (".probes"))) = {STAP_SENTINEL,(size_t)& probe ## _ ## probe_name[0],argc};
-
-/* The goto _probe_ prevents the label from "drifting" */
-#define STAP_LABEL_REF(probe, label) \
- if (__builtin_expect(_probe_ ## probe.probe_type < 0, 0)) \
- goto label;
+#define STAP_PROBE_DATA_(probe,label) \
+ __asm__ volatile (".section .probes\n" \
+ "\t.align 4\n" \
+ label "_name:\n\t.asciz " #probe "\n" \
+ "\t.align 4\n" \
+ "\t.int 0x31425250\n" \
+ "\t.align 8\n" \
+ "\t.quad " label "_name\n" \
+ "\t.quad " label "\n" \
+ "\t.previous\n")
+
+#define STAP_PROBE_DATA(probe,label) \
+ STAP_PROBE_DATA_(#probe,label)
/* These baroque macros are used to create a unique label */
#define STAP_CONCAT(a,b) a ## b
+#define STAP_CONCATSTR(a,b) #a #b
#define STAP_LABEL_PREFIX(p) _stapprobe1_ ## p
/* __COUNTER__ is not present in gcc 4.1 */
#if __GNUC__ == 4 && __GNUC_MINOR__ >= 3
#else
#define STAP_COUNTER STAP_CONCAT(__,LINE__)
#endif
-#define STAP_LABEL(a,b) STAP_CONCAT(a,b)
+#define STAP_LABEL(a,b) STAP_CONCATSTR(a,b)
#define STAP_PROBE_(probe,label) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
- STAP_LABEL_REF(probe,label); \
-label: \
- __asm__ volatile ("nop"); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop"); \
} while (0)
-#define STAP_PROBE1_(probe,label,parm1) \
+#define STAP_PROBE1_(probe,label,parm1) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
-label: \
- __asm__ volatile ("nop /* %0 */" :: "X"( arg1)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 */" :: "X"(arg1)); \
} while (0)
#define STAP_PROBE2_(probe,label,parm1,parm2) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
-label: \
- __asm__ volatile ("nop /* %0 %1 */" :: "X"(arg1), "X"(arg2)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 */" :: "X"(arg1), "X"(arg2)); \
} while (0)
#define STAP_PROBE3_(probe,label,parm1,parm2,parm3) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
-label: \
- __asm__ volatile ("nop /* %0 %1 %2 */" :: "X"(arg1), "X"(arg2), "X"(arg3)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 */" :: "X"(arg1), "X"(arg2), "X"(arg3)); \
} while (0)
#define STAP_PROBE4_(probe,label,parm1,parm2,parm3,parm4) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm4)) arg4 __attribute__ ((unused)) = parm4; \
-label: \
- __asm__ volatile ("nop /* %0 %1 %2 %3 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4)); \
} while (0)
#define STAP_PROBE5_(probe,label,parm1,parm2,parm3,parm4,parm5) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm4)) arg4 __attribute__ ((unused)) = parm4; \
volatile __typeof__((parm5)) arg5 __attribute__ ((unused)) = parm5; \
-label: \
- __asm__ volatile ("nop /* %0 %1 %2 %3 %4 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 %4 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5)); \
} while (0)
#define STAP_PROBE6_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm4)) arg4 __attribute__ ((unused)) = parm4; \
volatile __typeof__((parm5)) arg5 __attribute__ ((unused)) = parm5; \
volatile __typeof__((parm6)) arg6 __attribute__ ((unused)) = parm6; \
-label: \
- __asm__ volatile ("nop" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 %4 %5 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6)); \
} while (0)
-#define STAP_PROBE7_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7) \
+#define STAP_PROBE7_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm5)) arg5 __attribute__ ((unused)) = parm5; \
volatile __typeof__((parm6)) arg6 __attribute__ ((unused)) = parm6; \
volatile __typeof__((parm7)) arg7 __attribute__ ((unused)) = parm7; \
-label: \
- __asm__ volatile ("nop" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 %4 %5 %6 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7)); \
} while (0)
#define STAP_PROBE8_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm6)) arg6 __attribute__ ((unused)) = parm6; \
volatile __typeof__((parm7)) arg7 __attribute__ ((unused)) = parm7; \
volatile __typeof__((parm8)) arg8 __attribute__ ((unused)) = parm8; \
-label: \
- __asm__ volatile ("nop" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7), "X"(arg8)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 %4 %5 %6 %7 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7), "X"(arg8)); \
} while (0)
#define STAP_PROBE9_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm7)) arg7 __attribute__ ((unused)) = parm7; \
volatile __typeof__((parm8)) arg8 __attribute__ ((unused)) = parm8; \
volatile __typeof__((parm9)) arg9 __attribute__ ((unused)) = parm9; \
-label: \
- __asm__ volatile ("nop" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7), "X"(arg8), "X"(arg9)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 %4 %5 %6 %7 %8 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7), "X"(arg8), "X"(arg9)); \
} while (0)
#define STAP_PROBE10_(probe,label,parm1,parm2,parm3,parm4,parm5,parm6,parm7,parm8,parm9,parm10) \
do { \
- STAP_PROBE_STRUCT(probe,(size_t)&& label) \
volatile __typeof__((parm1)) arg1 __attribute__ ((unused)) = parm1; \
volatile __typeof__((parm2)) arg2 __attribute__ ((unused)) = parm2; \
volatile __typeof__((parm3)) arg3 __attribute__ ((unused)) = parm3; \
volatile __typeof__((parm8)) arg8 __attribute__ ((unused)) = parm8; \
volatile __typeof__((parm9)) arg9 __attribute__ ((unused)) = parm9; \
volatile __typeof__((parm10)) arg10 __attribute__ ((unused)) = parm10; \
-label: \
- __asm__ volatile ("nop" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7), "X"(arg8), "X"(arg9), "X"(arg10)); \
- STAP_LABEL_REF(probe,label); \
+ STAP_PROBE_DATA(probe,label); \
+ __asm__ volatile (label ":\n" \
+ "\tnop /* %0 %1 %2 %3 %4 %5 %6 %7 %8 %9 */" :: "X"(arg1), "X"(arg2), "X"(arg3), "X"(arg4), "X"(arg5), "X"(arg6), "X"(arg7), "X"(arg8), "X"(arg9), "X"(arg10)); \
} while (0)
#define STAP_PROBE(provider,probe) \