From 6eaa20c8362cf8e12e023e2e05861f84cec6a438 Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Wed, 6 Feb 2019 18:14:25 +0300 Subject: [PATCH] qemugdb/coroutine: fix arch_prctl has unknown return type qemu coroutine command results in following error output: Python Exception '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 Message-id: 20190206151425.105871-1-vsementsov@virtuozzo.com Signed-off-by: Stefan Hajnoczi --- 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