@@ -2815,8 +2815,10 @@ static void usage(void)
"-strace log system calls\n"
"\n"
"Environment variables:\n"
- "QEMU_STRACE Print system calls and arguments similar to the\n"
- " 'strace' program. Enable by setting to any value.\n"
+ "QEMU_STRACE Print system calls and arguments similar to the\n"
+ " 'strace' program. Enable by setting to any value.\n"
+ "QEMU_DEBUG=options Activate log. Use same options as '-d' options\n"
+ "QEMU_GDB=port Wait gdb connection to port\n"
"You can use -E and -U options to set/unset environment variables\n"
"for target process. It is possible to provide several variables\n"
"by repeating the option. For example:\n"
@@ -2872,7 +2874,7 @@ int main(int argc, char **argv, char **envp)
const char *filename;
const char *cpu_model;
const char *log_file = DEBUG_LOGFILE;
- const char *log_mask = NULL;
+ const char *log_mask = getenv("QEMU_DEBUG");
struct target_pt_regs regs1, *regs = ®s1;
struct image_info info1, *info = &info1;
struct linux_binprm bprm;
@@ -2919,6 +2921,9 @@ int main(int argc, char **argv, char **envp)
#if defined(cpudef_setup)
cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
#endif
+ if (getenv("QEMU_GDB")) {
+ gdbstub_port = atoi(getenv("QEMU_GDB"));
+ }
optind = 1;
for(;;) {
@@ -2285,6 +2285,10 @@ space emulator hasn't implemented ptrace). At the moment this is
incomplete. All system calls that don't have a specific argument
format are printed with information for six arguments. Many
flag-style arguments don't have decoders and will show up as numbers.
+@item QEMU_DEBUG=options
+Activate log. Use same options as '-d' options.
+@item QEMU_GDB=port
+Wait gdb connection to port.
@end table
@node Other binaries
QEMU_GDB=port allows to define gdb server port to wait on. QEMU_DEBUG=options allows to activate log file (like -d options) Signed-off-by: Laurent Vivier <Laurent@Vivier.EU> --- linux-user/main.c | 11 ++++++++--- qemu-doc.texi | 4 ++++ 2 files changed, 12 insertions(+), 3 deletions(-)