Rev 506 | Rev 533 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 498 | giacomo | 1 | #include <FTrace_types.h> |
| 2 | #include <FTrace_OSD.h> |
||
| 3 | |||
| 501 | giacomo | 4 | #include <ll/i386/hw-instr.h> |
| 5 | |||
| 498 | giacomo | 6 | /* OSD_pointers |
| 7 | |||
| 532 | giacomo | 8 | 00 - Actual Chunk Position |
| 9 | 04 - Actual Chunk Start |
||
| 10 | 08 - Actual Chunk Size |
||
| 11 | 12 - Actual Chunk Emergency Size |
||
| 12 | 16 - Actual Chunk Flags |
||
| 501 | giacomo | 13 | |
| 532 | giacomo | 14 | 20 - Next OSD pointer |
| 498 | giacomo | 15 | |
| 16 | */ |
||
| 17 | |||
| 501 | giacomo | 18 | void FTrace_safe_ipoint(WORD type, WORD par1, DWORD par2) |
| 498 | giacomo | 19 | { |
| 20 | |||
| 532 | giacomo | 21 | extern void *OSD_current_pointer; |
| 498 | giacomo | 22 | extern BYTE FTrace_enable; |
| 23 | |||
| 501 | giacomo | 24 | DWORD tsclow, tschigh; |
| 503 | giacomo | 25 | DWORD current; |
| 26 | DWORD start; |
||
| 27 | DWORD size; |
||
| 28 | DWORD flags; |
||
| 501 | giacomo | 29 | |
| 30 | SYS_FLAGS f; |
||
| 498 | giacomo | 31 | |
| 503 | giacomo | 32 | f = ll_fsave(); |
| 33 | |||
| 501 | giacomo | 34 | if (FTrace_enable) { |
| 35 | |||
| 532 | giacomo | 36 | current = *(DWORD *)(OSD_current_pointer); |
| 37 | start = *(DWORD *)(OSD_current_pointer + 4); |
||
| 38 | size = *(DWORD *)(OSD_current_pointer + 8); |
||
| 39 | flags = *(DWORD *)(OSD_current_pointer + 16); |
||
| 501 | giacomo | 40 | |
| 503 | giacomo | 41 | if (current == NULL) { |
| 42 | ll_frestore(f); |
||
| 43 | return; |
||
| 44 | } |
||
| 45 | |||
| 501 | giacomo | 46 | if (type != FTrace_EVT_next_chunk) { |
| 47 | |||
| 48 | if ((flags & FTRACE_CHUNK_FLAG_FULL) == FTRACE_CHUNK_FLAG_FULL) { |
||
| 49 | ll_frestore(f); |
||
| 50 | return; |
||
| 51 | } |
||
| 52 | |||
| 53 | /* Cyclical Buffer */ |
||
| 54 | if (current + 16 >= (start + size)) { |
||
| 55 | if ((flags & 0x0C) == FTRACE_CHUNK_FLAG_CYC) { |
||
| 56 | current = start; |
||
| 57 | } else { |
||
| 532 | giacomo | 58 | *(DWORD *)(OSD_current_pointer + 16) |= FTRACE_CHUNK_FLAG_FULL; |
| 501 | giacomo | 59 | if ((flags & 0x0C) == FTRACE_CHUNK_FLAG_JTN) { |
| 532 | giacomo | 60 | OSD_current_pointer = (void *)(*(DWORD *)(OSD_current_pointer + 20)); |
| 61 | ll_frestore(f); |
||
| 62 | return; |
||
| 501 | giacomo | 63 | } |
| 64 | } |
||
| 65 | } |
||
| 66 | |||
| 67 | __asm__("cpuid\n\t" |
||
| 68 | "rdtsc\n\t" |
||
| 503 | giacomo | 69 | : "=a" (tsclow), "=d" (tschigh) : : "ecx","ebx"); |
| 501 | giacomo | 70 | |
| 532 | giacomo | 71 | *(DWORD *)current = (DWORD)(par1 << 16 | type); |
| 501 | giacomo | 72 | *(DWORD *)(current + 4) = tschigh; |
| 73 | *(DWORD *)(current + 8) = tsclow; |
||
| 74 | *(DWORD *)(current + 16) = par2; |
||
| 75 | |||
| 532 | giacomo | 76 | *(DWORD *)(OSD_current_pointer) = current + 16; |
| 501 | giacomo | 77 | |
| 78 | } else { |
||
| 79 | |||
| 532 | giacomo | 80 | *(WORD *)(OSD_current_pointer + 16) |= FTRACE_CHUNK_FLAG_FULL; |
| 81 | OSD_current_pointer = (void *)(*(DWORD *)(OSD_current_pointer + 20)); |
||
| 82 | ll_frestore(f); |
||
| 83 | return; |
||
| 501 | giacomo | 84 | |
| 85 | } |
||
| 86 | |||
| 87 | } |
||
| 88 | |||
| 503 | giacomo | 89 | ll_frestore(f); |
| 90 | |||
| 498 | giacomo | 91 | } |
| 92 | |||
| 501 | giacomo | 93 | void FTrace_unsafe_ipoint(WORD type, WORD par1) |
| 498 | giacomo | 94 | { |
| 95 | |||
| 96 | extern BYTE OSD_pointers[FTRACE_OSD_CHUNK_HEAD]; |
||
| 97 | |||
| 98 | __asm__("pushfl\n\t" /* Critical Section */ |
||
| 99 | "cli\n\t" |
||
| 100 | "cpuid\n\t" |
||
| 101 | "rdtsc\n\t" |
||
| 501 | giacomo | 102 | "movl (%%edi),%%ebx\n\t" |
| 503 | giacomo | 103 | "movl %%esi,(%%ebx)\n\t" /* Save TYPE + WORD par1 */ |
| 104 | "movl %%edx,4(%%ebx)\n\t" /* Save TSC HIGH */ |
||
| 105 | "movl %%eax,8(%%ebx)\n\t" /* Save TSC LOW */ |
||
| 106 | "movl %%eax,12(%%ebx)\n\t" /* DWORD par2 */ |
||
| 107 | "addl $16,(%%edi)\n\t" /* Inc Position */ |
||
| 498 | giacomo | 108 | "popfl\n\t" |
| 532 | giacomo | 109 | :: "D" ((DWORD *)(OSD_pointers)), "S" (par1 << 16 | (type | 0x8000))); |
| 498 | giacomo | 110 | |
| 111 | } |
||
| 112 |