From a201b0ff28d9fa0f965450c1ba7191eca69f9fd5 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 12 Oct 2015 10:02:54 +0200
Subject: 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: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1444636974-19950-4-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
scripts/qemugdb/coroutine.py | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
(limited to 'scripts/qemugdb')
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)
--
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