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[Qemu-devel] [PULL 2/3] qemugdb/coroutine: fix arch_prctl has unknown re
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PULL 2/3] qemugdb/coroutine: fix arch_prctl has unknown return type |
Date: |
Tue, 12 Feb 2019 12:01:35 +0800 |
From: Vladimir Sementsov-Ogievskiy <address@hidden>
qemu coroutine command results in following error output:
Python Exception <class 'gdb.error'> 'arch_prctl' has unknown return
type; cast the call to its declared return type: Error occurred in
Python command: 'arch_prctl' has unknown return type; cast the call to
its declared return type
Fix it by giving it what it wants: arch_prctl return type.
Information on the topic:
https://sourceware.org/gdb/onlinedocs/gdb/Calling.html
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Message-id: address@hidden
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
scripts/qemugdb/coroutine.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/qemugdb/coroutine.py b/scripts/qemugdb/coroutine.py
index ab699794ab..81f811ac00 100644
--- a/scripts/qemugdb/coroutine.py
+++ b/scripts/qemugdb/coroutine.py
@@ -22,7 +22,7 @@ def get_fs_base():
pthread_self().'''
# %rsp - 120 is scratch space according to the SystemV ABI
old = gdb.parse_and_eval('*(uint64_t*)($rsp - 120)')
- gdb.execute('call arch_prctl(0x1003, $rsp - 120)', False, True)
+ gdb.execute('call (int)arch_prctl(0x1003, $rsp - 120)', False, True)
fs_base = gdb.parse_and_eval('*(uint64_t*)($rsp - 120)')
gdb.execute('set *(uint64_t*)($rsp - 120) = %s' % old, False, True)
return fs_base
--
2.20.1