From: Paolo Bonzini <pbonz...@redhat.com>
These can be useful to manually get a stack trace of a coroutine inside
a core dump.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Message-id: 1444636974-19950-4-git-send-email-pbonz...@redhat.com
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
scripts/qemu-gdb.py | 3 +++
scripts/qemugdb/coroutine.py | 16 ++++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py
index d6f2e5a..ef2fd19 100644
--- a/scripts/qemu-gdb.py
+++ b/scripts/qemu-gdb.py
@@ -38,6 +38,9 @@ QemuCommand()
coroutine.CoroutineCommand()
mtree.MtreeCommand()
+coroutine.CoroutineSPFunction()
+coroutine.CoroutinePCFunction()
+
# Default to silently passing through SIGUSR1, because QEMU sends it
# to itself a lot.
gdb.execute('handle SIGUSR1 pass noprint nostop')
diff --git a/scripts/qemugdb/coroutine.py b/scripts/qemugdb/coroutine.py
index b5c8678..ab69979 100644
--- a/scripts/qemugdb/coroutine.py
+++ b/scripts/qemugdb/coroutine.py
@@ -15,6 +15,8 @@
import gdb
+VOID_PTR = gdb.lookup_type('void').pointer()
+
def get_fs_base():
'''Fetch %fs base value using arch_prctl(ARCH_GET_FS). This is
pthread_self().'''
@@ -101,3 +103,17 @@ class CoroutineCommand(gdb.Command):
return
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)
--
2.4.3
