1e9fa73016
When debugging multi-threaded programs, QEMU's gdb stub would report the correct number of threads (the qfThreadInfo and qsThreadInfo packets). However, the stub was unable to actually switch between threads (the T packet), since it would report every thread except the first as being dead. Furthermore, the stub relied upon cpu_index as a reliable means of assigning IDs to the threads. This was a bad idea; if you have this sequence of events: initial thread created new thread #1 new thread #2 thread #1 exits new thread #3 thread #3 will have the same cpu_index as thread #1, which would confuse GDB. (This problem is partly due to the remote protocol not having a good way to send thread creation/destruction events.) We fix this by using the host thread ID for the identifier passed to GDB when debugging a multi-threaded userspace program. The thread ID might wrap, but the same sort of problems with wrapping thread IDs would come up with debugging programs natively, so this doesn't represent a problem. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> |
||
|---|---|---|
| .. | ||
| alpha | ||
| arm | ||
| cris | ||
| i386 | ||
| m68k | ||
| microblaze | ||
| mips | ||
| mips64 | ||
| mipsn32 | ||
| ppc | ||
| sh4 | ||
| sparc | ||
| sparc64 | ||
| x86_64 | ||
| elfload32.c | ||
| elfload.c | ||
| envlist.c | ||
| envlist.h | ||
| errno_defs.h | ||
| flat.h | ||
| flatload.c | ||
| ioctls.h | ||
| linux_loop.h | ||
| linuxload.c | ||
| m68k-sim.c | ||
| main.c | ||
| mmap.c | ||
| path.c | ||
| qemu-types.h | ||
| qemu.h | ||
| signal.c | ||
| socket.h | ||
| strace.c | ||
| strace.list | ||
| syscall_defs.h | ||
| syscall_types.h | ||
| syscall.c | ||
| uaccess.c | ||
| vm86.c | ||