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152 lines
2.8 KiB
152 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* intel_pt_log.c: Intel Processor Trace support |
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* Copyright (c) 2013-2014, Intel Corporation. |
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*/ |
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#include <stdio.h> |
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#include <stdint.h> |
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#include <inttypes.h> |
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#include <stdarg.h> |
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#include <stdbool.h> |
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#include <string.h> |
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#include "intel-pt-log.h" |
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#include "intel-pt-insn-decoder.h" |
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#include "intel-pt-pkt-decoder.h" |
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#define MAX_LOG_NAME 256 |
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static FILE *f; |
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static char log_name[MAX_LOG_NAME]; |
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bool intel_pt_enable_logging; |
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void *intel_pt_log_fp(void) |
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{ |
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return f; |
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} |
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void intel_pt_log_enable(void) |
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{ |
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intel_pt_enable_logging = true; |
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} |
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void intel_pt_log_disable(void) |
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{ |
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if (f) |
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fflush(f); |
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intel_pt_enable_logging = false; |
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} |
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void intel_pt_log_set_name(const char *name) |
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{ |
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strncpy(log_name, name, MAX_LOG_NAME - 5); |
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strcat(log_name, ".log"); |
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} |
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static void intel_pt_print_data(const unsigned char *buf, int len, uint64_t pos, |
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int indent) |
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{ |
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int i; |
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for (i = 0; i < indent; i++) |
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fprintf(f, " "); |
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fprintf(f, " %08" PRIx64 ": ", pos); |
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for (i = 0; i < len; i++) |
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fprintf(f, " %02x", buf[i]); |
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for (; i < 16; i++) |
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fprintf(f, " "); |
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fprintf(f, " "); |
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} |
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static void intel_pt_print_no_data(uint64_t pos, int indent) |
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{ |
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int i; |
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for (i = 0; i < indent; i++) |
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fprintf(f, " "); |
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fprintf(f, " %08" PRIx64 ": ", pos); |
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for (i = 0; i < 16; i++) |
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fprintf(f, " "); |
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fprintf(f, " "); |
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} |
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static int intel_pt_log_open(void) |
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{ |
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if (!intel_pt_enable_logging) |
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return -1; |
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if (f) |
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return 0; |
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if (log_name[0]) |
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f = fopen(log_name, "w+"); |
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else |
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f = stdout; |
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if (!f) { |
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intel_pt_enable_logging = false; |
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return -1; |
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} |
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return 0; |
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} |
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void __intel_pt_log_packet(const struct intel_pt_pkt *packet, int pkt_len, |
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uint64_t pos, const unsigned char *buf) |
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{ |
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char desc[INTEL_PT_PKT_DESC_MAX]; |
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if (intel_pt_log_open()) |
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return; |
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intel_pt_print_data(buf, pkt_len, pos, 0); |
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intel_pt_pkt_desc(packet, desc, INTEL_PT_PKT_DESC_MAX); |
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fprintf(f, "%s\n", desc); |
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} |
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void __intel_pt_log_insn(struct intel_pt_insn *intel_pt_insn, uint64_t ip) |
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{ |
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char desc[INTEL_PT_INSN_DESC_MAX]; |
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size_t len = intel_pt_insn->length; |
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if (intel_pt_log_open()) |
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return; |
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if (len > INTEL_PT_INSN_BUF_SZ) |
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len = INTEL_PT_INSN_BUF_SZ; |
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intel_pt_print_data(intel_pt_insn->buf, len, ip, 8); |
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if (intel_pt_insn_desc(intel_pt_insn, desc, INTEL_PT_INSN_DESC_MAX) > 0) |
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fprintf(f, "%s\n", desc); |
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else |
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fprintf(f, "Bad instruction!\n"); |
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} |
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void __intel_pt_log_insn_no_data(struct intel_pt_insn *intel_pt_insn, |
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uint64_t ip) |
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{ |
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char desc[INTEL_PT_INSN_DESC_MAX]; |
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if (intel_pt_log_open()) |
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return; |
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intel_pt_print_no_data(ip, 8); |
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if (intel_pt_insn_desc(intel_pt_insn, desc, INTEL_PT_INSN_DESC_MAX) > 0) |
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fprintf(f, "%s\n", desc); |
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else |
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fprintf(f, "Bad instruction!\n"); |
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} |
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void __intel_pt_log(const char *fmt, ...) |
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{ |
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va_list args; |
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if (intel_pt_log_open()) |
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return; |
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va_start(args, fmt); |
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vfprintf(f, fmt, args); |
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va_end(args); |
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}
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