提交 a201b0ff 编写于 作者: P Paolo Bonzini 提交者: Stefan Hajnoczi

qemu-gdb: add $qemu_coroutine_sp and $qemu_coroutine_pc

These can be useful to manually get a stack trace of a coroutine inside
a core dump.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1444636974-19950-4-git-send-email-pbonzini@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
上级 80ab31b2
...@@ -38,6 +38,9 @@ QemuCommand() ...@@ -38,6 +38,9 @@ QemuCommand()
coroutine.CoroutineCommand() coroutine.CoroutineCommand()
mtree.MtreeCommand() mtree.MtreeCommand()
coroutine.CoroutineSPFunction()
coroutine.CoroutinePCFunction()
# Default to silently passing through SIGUSR1, because QEMU sends it # Default to silently passing through SIGUSR1, because QEMU sends it
# to itself a lot. # to itself a lot.
gdb.execute('handle SIGUSR1 pass noprint nostop') gdb.execute('handle SIGUSR1 pass noprint nostop')
...@@ -15,6 +15,8 @@ ...@@ -15,6 +15,8 @@
import gdb import gdb
VOID_PTR = gdb.lookup_type('void').pointer()
def get_fs_base(): def get_fs_base():
'''Fetch %fs base value using arch_prctl(ARCH_GET_FS). This is '''Fetch %fs base value using arch_prctl(ARCH_GET_FS). This is
pthread_self().''' pthread_self().'''
...@@ -101,3 +103,17 @@ class CoroutineCommand(gdb.Command): ...@@ -101,3 +103,17 @@ class CoroutineCommand(gdb.Command):
return return
bt_jmpbuf(coroutine_to_jmpbuf(gdb.parse_and_eval(argv[0]))) bt_jmpbuf(coroutine_to_jmpbuf(gdb.parse_and_eval(argv[0])))
class CoroutineSPFunction(gdb.Function):
def __init__(self):
gdb.Function.__init__(self, 'qemu_coroutine_sp')
def invoke(self, addr):
return get_jmpbuf_regs(coroutine_to_jmpbuf(addr))['rsp'].cast(VOID_PTR)
class CoroutinePCFunction(gdb.Function):
def __init__(self):
gdb.Function.__init__(self, 'qemu_coroutine_pc')
def invoke(self, addr):
return get_jmpbuf_regs(coroutine_to_jmpbuf(addr))['rip'].cast(VOID_PTR)
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