diff options
| -rw-r--r-- | linux-user/main.c | 7 | ||||
| -rw-r--r-- | qemu-doc.texi | 11 |
2 files changed, 17 insertions, 1 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 379ac2962d..baa90731dc 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -1906,7 +1906,12 @@ void usage(void) "debug options:\n" "-d options activate log (logfile=%s)\n" "-p pagesize set the host page size to 'pagesize'\n" - "-strace log system calls\n", + "-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" + , TARGET_ARCH, interp_prefix, x86_stack_size, diff --git a/qemu-doc.texi b/qemu-doc.texi index 8e6cd506b8..04529a1157 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -2507,6 +2507,17 @@ Activate log (logfile=/tmp/qemu.log) Act as if the host page size was 'pagesize' bytes @end table +Environment variables: + +@table @env +@item QEMU_STRACE +Print system calls and arguments similar to the 'strace' program +(NOTE: the actual 'strace' program will not work because the user +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. + @node Other binaries @subsection Other binaries |