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 static const char *logfilename = "qemu.log";
26 static const char *logfilename = "/tmp/qemu.log";
30 static int log_append = 0;
32 void qemu_log(const char *fmt, ...)
38 vfprintf(qemu_logfile, fmt, ap);
43 void qemu_log_mask(int mask, const char *fmt, ...)
48 if ((qemu_loglevel & mask) && qemu_logfile) {
49 vfprintf(qemu_logfile, fmt, ap);
54 /* enable or disable low levels log */
55 void qemu_set_log(int log_flags, bool use_own_buffers)
57 qemu_loglevel = log_flags;
58 if (qemu_loglevel && !qemu_logfile) {
59 qemu_logfile = fopen(logfilename, log_append ? "a" : "w");
64 /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
65 if (use_own_buffers) {
66 static char logfile_buf[4096];
68 setvbuf(qemu_logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
71 /* Win32 doesn't support line-buffering, so use unbuffered output. */
72 setvbuf(qemu_logfile, NULL, _IONBF, 0);
74 setvbuf(qemu_logfile, NULL, _IOLBF, 0);
79 if (!qemu_loglevel && qemu_logfile) {
85 void cpu_set_log_filename(const char *filename)
87 logfilename = strdup(filename);
92 cpu_set_log(qemu_loglevel);
95 const CPULogItem cpu_log_items[] = {
96 { CPU_LOG_TB_OUT_ASM, "out_asm",
97 "show generated host assembly code for each compiled TB" },
98 { CPU_LOG_TB_IN_ASM, "in_asm",
99 "show target assembly code for each compiled TB" },
100 { CPU_LOG_TB_OP, "op",
101 "show micro ops for each compiled TB" },
102 { CPU_LOG_TB_OP_OPT, "op_opt",
103 "show micro ops (x86 only: before eflags optimization) and\n"
104 "after liveness analysis" },
105 { CPU_LOG_INT, "int",
106 "show interrupts/exceptions in short format" },
107 { CPU_LOG_EXEC, "exec",
108 "show trace before each executed TB (lots of logs)" },
109 { CPU_LOG_TB_CPU, "cpu",
110 "show CPU state before block translation" },
111 { CPU_LOG_PCALL, "pcall",
112 "x86 only: show protected mode far calls/returns/exceptions" },
113 { CPU_LOG_RESET, "cpu_reset",
114 "x86 only: show CPU state before CPU resets" },
115 { CPU_LOG_IOPORT, "ioport",
116 "show all i/o ports accesses" },
117 { LOG_UNIMP, "unimp",
118 "log unimplemented functionality" },
119 { LOG_GUEST_ERROR, "guest_errors",
120 "log when the guest OS does something invalid (eg accessing a\n"
121 "non-existent register)" },
125 static int cmp1(const char *s1, int n, const char *s2)
127 if (strlen(s2) != n) {
130 return memcmp(s1, s2, n) == 0;
133 /* takes a comma separated list of log masks. Return 0 if error. */
134 int cpu_str_to_log_mask(const char *str)
136 const CPULogItem *item;
147 if (cmp1(p,p1-p,"all")) {
148 for (item = cpu_log_items; item->mask != 0; item++) {
152 for (item = cpu_log_items; item->mask != 0; item++) {
153 if (cmp1(p, p1 - p, item->name)) {