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authorBlue Swirl <blauwirbel@gmail.com>2012-06-03 15:03:23 +0000
committerBlue Swirl <blauwirbel@gmail.com>2012-06-21 18:45:16 +0000
commit5726c27fa913296aafab9f50b912cea5b3709271 (patch)
treec0ef9de36555929ae7fe2cd74870f9e4c2f3ca2b /qemu-log.c
parent7798a8828a654ce438584bdfccaa3e8a120cf998 (diff)
qemu-log: move logging to qemu-log.c
Move logging functions from exec.c to qemu-log.c, compile it only once. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'qemu-log.c')
-rw-r--r--qemu-log.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/qemu-log.c b/qemu-log.c
new file mode 100644
index 0000000000..4d7499fdf5
--- /dev/null
+++ b/qemu-log.c
@@ -0,0 +1,146 @@
+/*
+ * Logging support
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu-common.h"
+#include "qemu-log.h"
+
+#ifdef WIN32
+static const char *logfilename = "qemu.log";
+#else
+static const char *logfilename = "/tmp/qemu.log";
+#endif
+FILE *logfile;
+int loglevel;
+static int log_append = 0;
+
+/* enable or disable low levels log */
+void cpu_set_log(int log_flags)
+{
+ loglevel = log_flags;
+ if (loglevel && !logfile) {
+ logfile = fopen(logfilename, log_append ? "a" : "w");
+ if (!logfile) {
+ perror(logfilename);
+ _exit(1);
+ }
+#if !defined(CONFIG_SOFTMMU)
+ /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
+ {
+ static char logfile_buf[4096];
+ setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
+ }
+#elif defined(_WIN32)
+ /* Win32 doesn't support line-buffering, so use unbuffered output. */
+ setvbuf(logfile, NULL, _IONBF, 0);
+#else
+ setvbuf(logfile, NULL, _IOLBF, 0);
+#endif
+ log_append = 1;
+ }
+ if (!loglevel && logfile) {
+ fclose(logfile);
+ logfile = NULL;
+ }
+}
+
+void cpu_set_log_filename(const char *filename)
+{
+ logfilename = strdup(filename);
+ if (logfile) {
+ fclose(logfile);
+ logfile = NULL;
+ }
+ cpu_set_log(loglevel);
+}
+
+const CPULogItem cpu_log_items[] = {
+ { CPU_LOG_TB_OUT_ASM, "out_asm",
+ "show generated host assembly code for each compiled TB" },
+ { CPU_LOG_TB_IN_ASM, "in_asm",
+ "show target assembly code for each compiled TB" },
+ { CPU_LOG_TB_OP, "op",
+ "show micro ops for each compiled TB" },
+ { CPU_LOG_TB_OP_OPT, "op_opt",
+ "show micro ops "
+#ifdef TARGET_I386
+ "before eflags optimization and "
+#endif
+ "after liveness analysis" },
+ { CPU_LOG_INT, "int",
+ "show interrupts/exceptions in short format" },
+ { CPU_LOG_EXEC, "exec",
+ "show trace before each executed TB (lots of logs)" },
+ { CPU_LOG_TB_CPU, "cpu",
+ "show CPU state before block translation" },
+#ifdef TARGET_I386
+ { CPU_LOG_PCALL, "pcall",
+ "show protected mode far calls/returns/exceptions" },
+ { CPU_LOG_RESET, "cpu_reset",
+ "show CPU state before CPU resets" },
+#endif
+#ifdef DEBUG_IOPORT
+ { CPU_LOG_IOPORT, "ioport",
+ "show all i/o ports accesses" },
+#endif
+ { 0, NULL, NULL },
+};
+
+static int cmp1(const char *s1, int n, const char *s2)
+{
+ if (strlen(s2) != n) {
+ return 0;
+ }
+ return memcmp(s1, s2, n) == 0;
+}
+
+/* takes a comma separated list of log masks. Return 0 if error. */
+int cpu_str_to_log_mask(const char *str)
+{
+ const CPULogItem *item;
+ int mask;
+ const char *p, *p1;
+
+ p = str;
+ mask = 0;
+ for (;;) {
+ p1 = strchr(p, ',');
+ if (!p1) {
+ p1 = p + strlen(p);
+ }
+ if (cmp1(p,p1-p,"all")) {
+ for (item = cpu_log_items; item->mask != 0; item++) {
+ mask |= item->mask;
+ }
+ } else {
+ for (item = cpu_log_items; item->mask != 0; item++) {
+ if (cmp1(p, p1 - p, item->name)) {
+ goto found;
+ }
+ }
+ return 0;
+ }
+ found:
+ mask |= item->mask;
+ if (*p1 != ',') {
+ break;
+ }
+ p = p1 + 1;
+ }
+ return mask;
+}