4 * Copyright (c) 2003 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qemu-common.h"
23 #include "trace/control.h"
25 static char *logfilename;
28 static int log_append = 0;
30 void qemu_log(const char *fmt, ...)
36 vfprintf(qemu_logfile, fmt, ap);
41 void qemu_log_mask(int mask, const char *fmt, ...)
46 if ((qemu_loglevel & mask) && qemu_logfile) {
47 vfprintf(qemu_logfile, fmt, ap);
52 /* enable or disable low levels log */
53 void do_qemu_set_log(int log_flags, bool use_own_buffers)
55 qemu_loglevel = log_flags;
56 #ifdef CONFIG_TRACE_LOG
57 qemu_loglevel |= LOG_TRACE;
59 if (qemu_loglevel && !qemu_logfile) {
61 qemu_logfile = fopen(logfilename, log_append ? "a" : "w");
67 /* Default to stderr if no log file specified */
68 qemu_logfile = stderr;
70 /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
71 if (use_own_buffers) {
72 static char logfile_buf[4096];
74 setvbuf(qemu_logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
77 /* Win32 doesn't support line-buffering, so use unbuffered output. */
78 setvbuf(qemu_logfile, NULL, _IONBF, 0);
80 setvbuf(qemu_logfile, NULL, _IOLBF, 0);
85 if (!qemu_loglevel && qemu_logfile) {
90 void qemu_set_log_filename(const char *filename)
93 logfilename = g_strdup(filename);
95 qemu_set_log(qemu_loglevel);
98 const QEMULogItem qemu_log_items[] = {
99 { CPU_LOG_TB_OUT_ASM, "out_asm",
100 "show generated host assembly code for each compiled TB" },
101 { CPU_LOG_TB_IN_ASM, "in_asm",
102 "show target assembly code for each compiled TB" },
103 { CPU_LOG_TB_OP, "op",
104 "show micro ops for each compiled TB" },
105 { CPU_LOG_TB_OP_OPT, "op_opt",
106 "show micro ops (x86 only: before eflags optimization) and\n"
107 "after liveness analysis" },
108 { CPU_LOG_INT, "int",
109 "show interrupts/exceptions in short format" },
110 { CPU_LOG_EXEC, "exec",
111 "show trace before each executed TB (lots of logs)" },
112 { CPU_LOG_TB_CPU, "cpu",
113 "show CPU state before block translation" },
114 { CPU_LOG_MMU, "mmu",
115 "log MMU-related activities" },
116 { CPU_LOG_PCALL, "pcall",
117 "x86 only: show protected mode far calls/returns/exceptions" },
118 { CPU_LOG_RESET, "cpu_reset",
119 "show CPU state before CPU resets" },
120 { LOG_UNIMP, "unimp",
121 "log unimplemented functionality" },
122 { LOG_GUEST_ERROR, "guest_errors",
123 "log when the guest OS does something invalid (eg accessing a\n"
124 "non-existent register)" },
125 { CPU_LOG_PAGE, "page",
126 "dump pages at beginning of user mode emulation" },
127 { CPU_LOG_TB_NOCHAIN, "nochain",
128 "do not chain compiled TBs so that \"exec\" and \"cpu\" show\n"
133 static int cmp1(const char *s1, int n, const char *s2)
135 if (strlen(s2) != n) {
138 return memcmp(s1, s2, n) == 0;
141 /* takes a comma separated list of log masks. Return 0 if error. */
142 int qemu_str_to_log_mask(const char *str)
144 const QEMULogItem *item;
155 if (cmp1(p,p1-p,"all")) {
156 for (item = qemu_log_items; item->mask != 0; item++) {
159 #ifdef CONFIG_TRACE_LOG
160 } else if (strncmp(p, "trace:", 6) == 0 && p + 6 != p1) {
161 trace_enable_events(p + 6);
165 for (item = qemu_log_items; item->mask != 0; item++) {
166 if (cmp1(p, p1 - p, item->name)) {
182 void qemu_print_log_usage(FILE *f)
184 const QEMULogItem *item;
185 fprintf(f, "Log items (comma separated):\n");
186 for (item = qemu_log_items; item->mask != 0; item++) {
187 fprintf(f, "%-15s %s\n", item->name, item->help);
189 #ifdef CONFIG_TRACE_LOG
190 fprintf(f, "trace:PATTERN enable trace events\n");
191 fprintf(f, "\nUse \"-d trace:help\" to get a list of trace events.\n\n");