Rev 1063 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 1063 | tullio | 1 | |
| 2 | /* |
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| 3 | * This program is free software; you can redistribute it and/or modify |
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| 4 | * it under the terms of the GNU General Public License as published by |
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| 5 | * the Free Software Foundation; either version 2 of the License, or |
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| 6 | * (at your option) any later version. |
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| 7 | * |
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| 8 | * This program is distributed in the hope that it will be useful, |
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| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | * GNU General Public License for more details. |
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| 12 | * |
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| 13 | * You should have received a copy of the GNU General Public License |
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| 14 | * along with this program; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 16 | * |
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| 17 | */ |
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| 18 | |||
| 498 | giacomo | 19 | #include <FTrace_types.h> |
| 20 | #include <FTrace_OSD.h> |
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| 1027 | tullio | 21 | #include <FTrace.h> |
| 498 | giacomo | 22 | |
| 501 | giacomo | 23 | #include <ll/i386/hw-instr.h> |
| 24 | |||
| 498 | giacomo | 25 | /* OSD_pointers |
| 26 | |||
| 532 | giacomo | 27 | 00 - Actual Chunk Position |
| 28 | 04 - Actual Chunk Start |
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| 29 | 08 - Actual Chunk Size |
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| 30 | 12 - Actual Chunk Emergency Size |
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| 31 | 16 - Actual Chunk Flags |
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| 501 | giacomo | 32 | |
| 532 | giacomo | 33 | 20 - Next OSD pointer |
| 498 | giacomo | 34 | |
| 35 | */ |
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| 36 | |||
| 1027 | tullio | 37 | extern WORD FTrace_filter_mask; |
| 38 | |||
| 39 | /** |
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| 40 | * This is the function that actually store the event into the selected chunk. |
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| 41 | */ |
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| 501 | giacomo | 42 | void FTrace_safe_ipoint(WORD type, WORD par1, DWORD par2) |
| 498 | giacomo | 43 | { |
| 44 | |||
| 532 | giacomo | 45 | extern void *OSD_current_pointer; |
| 562 | giacomo | 46 | extern int FTraceEnable; |
| 498 | giacomo | 47 | |
| 501 | giacomo | 48 | DWORD tsclow, tschigh; |
| 503 | giacomo | 49 | DWORD current; |
| 50 | DWORD start; |
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| 51 | DWORD size; |
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| 52 | DWORD flags; |
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| 501 | giacomo | 53 | |
| 54 | SYS_FLAGS f; |
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| 498 | giacomo | 55 | |
| 503 | giacomo | 56 | f = ll_fsave(); |
| 57 | |||
| 562 | giacomo | 58 | if (FTraceEnable) { |
| 1027 | tullio | 59 | |
| 60 | /** Tool: do not filter the "filter" event family. */ |
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| 61 | if ((type & 0xF0) != 0xF0) |
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| 62 | if (FTrace_filter_mask & (0x01 << (type & FTrace_family_mask))) |
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| 63 | return; |
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| 64 | |||
| 532 | giacomo | 65 | current = *(DWORD *)(OSD_current_pointer); |
| 66 | start = *(DWORD *)(OSD_current_pointer + 4); |
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| 67 | size = *(DWORD *)(OSD_current_pointer + 8); |
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| 68 | flags = *(DWORD *)(OSD_current_pointer + 16); |
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| 501 | giacomo | 69 | |
| 503 | giacomo | 70 | if (current == NULL) { |
| 71 | ll_frestore(f); |
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| 72 | return; |
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| 73 | } |
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| 74 | |||
| 501 | giacomo | 75 | if (type != FTrace_EVT_next_chunk) { |
| 76 | |||
| 77 | if ((flags & FTRACE_CHUNK_FLAG_FULL) == FTRACE_CHUNK_FLAG_FULL) { |
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| 78 | ll_frestore(f); |
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| 79 | return; |
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| 80 | } |
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| 907 | mauro | 81 | |
| 1027 | tullio | 82 | /** Cyclical Buffer */ |
| 501 | giacomo | 83 | if (current + 16 >= (start + size)) { |
| 84 | if ((flags & 0x0C) == FTRACE_CHUNK_FLAG_CYC) { |
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| 85 | current = start; |
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| 86 | } else { |
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| 532 | giacomo | 87 | *(DWORD *)(OSD_current_pointer + 16) |= FTRACE_CHUNK_FLAG_FULL; |
| 501 | giacomo | 88 | if ((flags & 0x0C) == FTRACE_CHUNK_FLAG_JTN) { |
| 532 | giacomo | 89 | OSD_current_pointer = (void *)(*(DWORD *)(OSD_current_pointer + 20)); |
| 90 | ll_frestore(f); |
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| 91 | return; |
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| 501 | giacomo | 92 | } |
| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 | __asm__("cpuid\n\t" |
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| 97 | "rdtsc\n\t" |
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| 503 | giacomo | 98 | : "=a" (tsclow), "=d" (tschigh) : : "ecx","ebx"); |
| 501 | giacomo | 99 | |
| 593 | giacomo | 100 | *(DWORD *)current = (DWORD)((DWORD)(par1) << 16 | (DWORD)(type)); |
| 501 | giacomo | 101 | *(DWORD *)(current + 4) = tschigh; |
| 102 | *(DWORD *)(current + 8) = tsclow; |
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| 534 | giacomo | 103 | *(DWORD *)(current + 12) = par2; |
| 501 | giacomo | 104 | |
| 532 | giacomo | 105 | *(DWORD *)(OSD_current_pointer) = current + 16; |
| 501 | giacomo | 106 | |
| 107 | } else { |
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| 108 | |||
| 532 | giacomo | 109 | *(WORD *)(OSD_current_pointer + 16) |= FTRACE_CHUNK_FLAG_FULL; |
| 110 | OSD_current_pointer = (void *)(*(DWORD *)(OSD_current_pointer + 20)); |
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| 111 | ll_frestore(f); |
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| 112 | return; |
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| 501 | giacomo | 113 | |
| 114 | } |
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| 115 | |||
| 116 | } |
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| 117 | |||
| 503 | giacomo | 118 | ll_frestore(f); |
| 119 | |||
| 498 | giacomo | 120 | } |
| 121 | |||
| 501 | giacomo | 122 | void FTrace_unsafe_ipoint(WORD type, WORD par1) |
| 498 | giacomo | 123 | { |
| 124 | |||
| 533 | giacomo | 125 | extern void *OSD_current_pointer; |
| 498 | giacomo | 126 | |
| 127 | __asm__("pushfl\n\t" /* Critical Section */ |
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| 128 | "cli\n\t" |
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| 129 | "cpuid\n\t" |
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| 130 | "rdtsc\n\t" |
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| 501 | giacomo | 131 | "movl (%%edi),%%ebx\n\t" |
| 503 | giacomo | 132 | "movl %%esi,(%%ebx)\n\t" /* Save TYPE + WORD par1 */ |
| 133 | "movl %%edx,4(%%ebx)\n\t" /* Save TSC HIGH */ |
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| 134 | "movl %%eax,8(%%ebx)\n\t" /* Save TSC LOW */ |
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| 135 | "addl $16,(%%edi)\n\t" /* Inc Position */ |
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| 498 | giacomo | 136 | "popfl\n\t" |
| 533 | giacomo | 137 | :: "D" ((DWORD *)(OSD_current_pointer)), "S" (par1 << 16 | (type | 0x8000))); |
| 498 | giacomo | 138 | |
| 139 | } |
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| 140 |