2 * intel_pt_log.c: Intel Processor Trace support
3 * Copyright (c) 2013-2014, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
23 #include "intel-pt-log.h"
24 #include "intel-pt-insn-decoder.h"
26 #include "intel-pt-pkt-decoder.h"
28 #define MAX_LOG_NAME 256
31 static char log_name[MAX_LOG_NAME];
32 bool intel_pt_enable_logging;
34 void intel_pt_log_enable(void)
36 intel_pt_enable_logging = true;
39 void intel_pt_log_disable(void)
43 intel_pt_enable_logging = false;
46 void intel_pt_log_set_name(const char *name)
48 strncpy(log_name, name, MAX_LOG_NAME - 5);
49 strcat(log_name, ".log");
52 static void intel_pt_print_data(const unsigned char *buf, int len, uint64_t pos,
57 for (i = 0; i < indent; i++)
60 fprintf(f, " %08" PRIx64 ": ", pos);
61 for (i = 0; i < len; i++)
62 fprintf(f, " %02x", buf[i]);
68 static void intel_pt_print_no_data(uint64_t pos, int indent)
72 for (i = 0; i < indent; i++)
75 fprintf(f, " %08" PRIx64 ": ", pos);
76 for (i = 0; i < 16; i++)
81 static int intel_pt_log_open(void)
83 if (!intel_pt_enable_logging)
92 f = fopen(log_name, "w+");
94 intel_pt_enable_logging = false;
101 void __intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len,
102 uint64_t pos, const unsigned char *buf)
104 char desc[INTEL_PT_PKT_DESC_MAX];
106 if (intel_pt_log_open())
109 intel_pt_print_data(buf, pkt_len, pos, 0);
110 intel_pt_pkt_desc(packet, desc, INTEL_PT_PKT_DESC_MAX);
111 fprintf(f, "%s\n", desc);
114 void __intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip)
116 char desc[INTEL_PT_INSN_DESC_MAX];
117 size_t len = intel_pt_insn->length;
119 if (intel_pt_log_open())
122 if (len > INTEL_PT_INSN_DBG_BUF_SZ)
123 len = INTEL_PT_INSN_DBG_BUF_SZ;
124 intel_pt_print_data(intel_pt_insn->buf, len, ip, 8);
125 if (intel_pt_insn_desc(intel_pt_insn, desc, INTEL_PT_INSN_DESC_MAX) > 0)
126 fprintf(f, "%s\n", desc);
128 fprintf(f, "Bad instruction!\n");
131 void __intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn,
134 char desc[INTEL_PT_INSN_DESC_MAX];
136 if (intel_pt_log_open())
139 intel_pt_print_no_data(ip, 8);
140 if (intel_pt_insn_desc(intel_pt_insn, desc, INTEL_PT_INSN_DESC_MAX) > 0)
141 fprintf(f, "%s\n", desc);
143 fprintf(f, "Bad instruction!\n");
146 void __intel_pt_log(const char *fmt, ...)
150 if (intel_pt_log_open())
154 vfprintf(f, fmt, args);