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-common.h"
24 #define DEFAULT_LOGFILENAME "qemu.log"
26 #define DEFAULT_LOGFILENAME "/tmp/qemu.log"
29 static char *logfilename;
32 static int log_append = 0;
34 void qemu_log(const char *fmt, ...)
40 vfprintf(qemu_logfile, fmt, ap);
45 void qemu_log_mask(int mask, const char *fmt, ...)
50 if ((qemu_loglevel & mask) && qemu_logfile) {
51 vfprintf(qemu_logfile, fmt, ap);
56 /* enable or disable low levels log */
57 void qemu_set_log(int log_flags, bool use_own_buffers)
59 const char *fname = logfilename ?: DEFAULT_LOGFILENAME;
61 qemu_loglevel = log_flags;
62 if (qemu_loglevel && !qemu_logfile) {
63 qemu_logfile = fopen(fname, log_append ? "a" : "w");
68 /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
69 if (use_own_buffers) {
70 static char logfile_buf[4096];
72 setvbuf(qemu_logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
75 /* Win32 doesn't support line-buffering, so use unbuffered output. */
76 setvbuf(qemu_logfile, NULL, _IONBF, 0);
78 setvbuf(qemu_logfile, NULL, _IOLBF, 0);
83 if (!qemu_loglevel && qemu_logfile) {
89 void cpu_set_log_filename(const char *filename)
92 logfilename = g_strdup(filename);
97 cpu_set_log(qemu_loglevel);
100 const CPULogItem cpu_log_items[] = {
101 { CPU_LOG_TB_OUT_ASM, "out_asm",
102 "show generated host assembly code for each compiled TB" },
103 { CPU_LOG_TB_IN_ASM, "in_asm",
104 "show target assembly code for each compiled TB" },
105 { CPU_LOG_TB_OP, "op",
106 "show micro ops for each compiled TB" },
107 { CPU_LOG_TB_OP_OPT, "op_opt",
108 "show micro ops (x86 only: before eflags optimization) and\n"
109 "after liveness analysis" },
110 { CPU_LOG_INT, "int",
111 "show interrupts/exceptions in short format" },
112 { CPU_LOG_EXEC, "exec",
113 "show trace before each executed TB (lots of logs)" },
114 { CPU_LOG_TB_CPU, "cpu",
115 "show CPU state before block translation" },
116 { CPU_LOG_PCALL, "pcall",
117 "x86 only: show protected mode far calls/returns/exceptions" },
118 { CPU_LOG_RESET, "cpu_reset",
119 "x86 only: show CPU state before CPU resets" },
120 { CPU_LOG_IOPORT, "ioport",
121 "show all i/o ports accesses" },
122 { LOG_UNIMP, "unimp",
123 "log unimplemented functionality" },
124 { LOG_GUEST_ERROR, "guest_errors",
125 "log when the guest OS does something invalid (eg accessing a\n"
126 "non-existent register)" },
130 static int cmp1(const char *s1, int n, const char *s2)
132 if (strlen(s2) != n) {
135 return memcmp(s1, s2, n) == 0;
138 /* takes a comma separated list of log masks. Return 0 if error. */
139 int cpu_str_to_log_mask(const char *str)
141 const CPULogItem *item;
152 if (cmp1(p,p1-p,"all")) {
153 for (item = cpu_log_items; item->mask != 0; item++) {
157 for (item = cpu_log_items; item->mask != 0; item++) {
158 if (cmp1(p, p1 - p, item->name)) {