diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/feather_trace.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/include/asm-x86/feather_trace.h b/include/asm-x86/feather_trace.h index f60fbed07afb..253067eceeec 100644 --- a/include/asm-x86/feather_trace.h +++ b/include/asm-x86/feather_trace.h | |||
| @@ -1,6 +1,97 @@ | |||
| 1 | #ifndef _ARCH_FEATHER_TRACE_H | 1 | #ifndef _ARCH_FEATHER_TRACE_H |
| 2 | #define _ARCH_FEATHER_TRACE_H | 2 | #define _ARCH_FEATHER_TRACE_H |
| 3 | 3 | ||
| 4 | static inline int fetch_and_inc(int *val) | ||
| 5 | { | ||
| 6 | int ret = 1; | ||
| 7 | __asm__ __volatile__("lock; xaddl %0, %1" : "+r" (ret), "+m" (*val) : : "memory" ); | ||
| 8 | return ret; | ||
| 9 | } | ||
| 10 | |||
| 11 | static inline int fetch_and_dec(int *val) | ||
| 12 | { | ||
| 13 | int ret = -1; | ||
| 14 | __asm__ __volatile__("lock; xaddl %0, %1" : "+r" (ret), "+m" (*val) : : "memory" ); | ||
| 15 | return ret; | ||
| 16 | } | ||
| 17 | |||
| 18 | #define feather_callback __attribute__((regparm(0))) | ||
| 19 | |||
| 20 | /* make the compiler reload any register that is not saved in | ||
| 21 | * a cdecl function call | ||
| 22 | */ | ||
| 23 | #define CLOBBER_LIST "memory", "cc", "eax", "ecx", "edx" | ||
| 24 | |||
| 25 | #define ft_event(id, callback) \ | ||
| 26 | __asm__ __volatile__( \ | ||
| 27 | "1: jmp 2f \n\t" \ | ||
| 28 | " call " #callback " \n\t" \ | ||
| 29 | ".section __event_table, \"aw\" \n\t" \ | ||
| 30 | ".long " #id ", 0, 1b, 2f \n\t" \ | ||
| 31 | ".previous \n\t" \ | ||
| 32 | "2: \n\t" \ | ||
| 33 | : : : CLOBBER_LIST) | ||
| 34 | |||
| 35 | #define ft_event0(id, callback) \ | ||
| 36 | __asm__ __volatile__( \ | ||
| 37 | "1: jmp 2f \n\t" \ | ||
| 38 | " subl $4, %%esp \n\t" \ | ||
| 39 | " movl $" #id ", (%%esp) \n\t" \ | ||
| 40 | " call " #callback " \n\t" \ | ||
| 41 | " addl $4, %%esp \n\t" \ | ||
| 42 | ".section __event_table, \"aw\" \n\t" \ | ||
| 43 | ".long " #id ", 0, 1b, 2f \n\t" \ | ||
| 44 | ".previous \n\t" \ | ||
| 45 | "2: \n\t" \ | ||
| 46 | : : : CLOBBER_LIST) | ||
| 47 | |||
| 48 | #define ft_event1(id, callback, param) \ | ||
| 49 | __asm__ __volatile__( \ | ||
| 50 | "1: jmp 2f \n\t" \ | ||
| 51 | " subl $8, %%esp \n\t" \ | ||
| 52 | " movl %0, 4(%%esp) \n\t" \ | ||
| 53 | " movl $" #id ", (%%esp) \n\t" \ | ||
| 54 | " call " #callback " \n\t" \ | ||
| 55 | " addl $8, %%esp \n\t" \ | ||
| 56 | ".section __event_table, \"aw\" \n\t" \ | ||
| 57 | ".long " #id ", 0, 1b, 2f \n\t" \ | ||
| 58 | ".previous \n\t" \ | ||
| 59 | "2: \n\t" \ | ||
| 60 | : : "r" (param) : CLOBBER_LIST) | ||
| 61 | |||
| 62 | #define ft_event2(id, callback, param, param2) \ | ||
| 63 | __asm__ __volatile__( \ | ||
| 64 | "1: jmp 2f \n\t" \ | ||
| 65 | " subl $12, %%esp \n\t" \ | ||
| 66 | " movl %1, 8(%%esp) \n\t" \ | ||
| 67 | " movl %0, 4(%%esp) \n\t" \ | ||
| 68 | " movl $" #id ", (%%esp) \n\t" \ | ||
| 69 | " call " #callback " \n\t" \ | ||
| 70 | " addl $12, %%esp \n\t" \ | ||
| 71 | ".section __event_table, \"aw\" \n\t" \ | ||
| 72 | ".long " #id ", 0, 1b, 2f \n\t" \ | ||
| 73 | ".previous \n\t" \ | ||
| 74 | "2: \n\t" \ | ||
| 75 | : : "r" (param), "r" (param2) : CLOBBER_LIST) | ||
| 76 | |||
| 77 | |||
| 78 | #define ft_event3(id, callback, p, p2, p3) \ | ||
| 79 | __asm__ __volatile__( \ | ||
| 80 | "1: jmp 2f \n\t" \ | ||
| 81 | " subl $16, %%esp \n\t" \ | ||
| 82 | " movl %1, 12(%%esp) \n\t" \ | ||
| 83 | " movl %1, 8(%%esp) \n\t" \ | ||
| 84 | " movl %0, 4(%%esp) \n\t" \ | ||
| 85 | " movl $" #id ", (%%esp) \n\t" \ | ||
| 86 | " call " #callback " \n\t" \ | ||
| 87 | " addl $16, %%esp \n\t" \ | ||
| 88 | ".section __event_table, \"aw\" \n\t" \ | ||
| 89 | ".long " #id ", 0, 1b, 2f \n\t" \ | ||
| 90 | ".previous \n\t" \ | ||
| 91 | "2: \n\t" \ | ||
| 92 | : : "r" (p), "r" (p2), "r" (p3) : CLOBBER_LIST) | ||
| 93 | |||
| 94 | |||
| 4 | static inline unsigned long long ft_timestamp(void) | 95 | static inline unsigned long long ft_timestamp(void) |
| 5 | { | 96 | { |
| 6 | unsigned long long ret; | 97 | unsigned long long ret; |
| @@ -8,4 +99,6 @@ static inline unsigned long long ft_timestamp(void) | |||
| 8 | return ret; | 99 | return ret; |
| 9 | } | 100 | } |
| 10 | 101 | ||
| 102 | #define __ARCH_HAS_FEATHER_TRACE | ||
| 103 | |||
| 11 | #endif | 104 | #endif |