Hi there,
I am trying to porting Mono 4.2.1 into aix 6.1, it was compiled in 32bits mode.
At present, I faced a segment fault at :
return runtime_invoke (obj, params, exc, info->compiled_method);
this is line is the last one in function mono_jit_runtime_invoke.
It seems 'runtime_invoke' could not be invoked so it leads to core dump. The
call stack is following:
#0 0x7c0802a4 in ?? ()
#1 0x102ff224 in mono_jit_runtime_invoke (method=0x200def38, obj=0x30400038,
params=0x2ff22800, exc=0x0) at mini-runtime.c:2343
#2 0x100db4d8 in mono_runtime_invoke (method=0x200def38, obj=0x30400038,
params=0x2ff22800, exc=0x0) at object.c:2783
#3 0x10184580 in create_exception_two_strings (klass=0x200dca60,
a1=0x30400010, a2=0x0) at exception.c:142
#4 0x10184624 in mono_exception_from_name_two_strings (image=0x2009cad8,
name_space=0x1046e2cc <__popcount_tab+15548> "System",
name=0x1046e2d4 <__popcount_tab+15556> "OutOfMemoryException",
a1=0x30400010, a2=0x0) at exception.c:165
#5 0x1017d358 in create_domain_objects (domain=0x20099078) at appdomain.c:186
#6 0x1017d630 in mono_runtime_init (domain=0x20099078, start_cb=@0x200230e0:
0x102fb84c ,
attach_cb=@0x200230ec: 0x102fb988 ) at
appdomain.c:265
#7 0x103012c0 in mini_init (filename=0x2ff22ce6 "./hello.exe",
runtime_version=0x0) at mini-runtime.c:3140
#8 0x10013db4 in mono_main (argc=2, argv=0x2ff22c48) at driver.c:1906
#9 0x1a20 in mono_main_with_options (argc=2, argv=0x2ff22c48) at main.c:91
#10 0x1aa8 in main (argc=2, argv=0x2ff22c48) at main.c:122
Hello.exe is a simple C# program compiled on linux platform.
public class HelloWorld
{
static public void Main ()
{
}
}
I think the runtime_invoke is just a invoke wrapper, the actual function is
info->compiled_method.
I could print out those function debug info:
invoker: (wrapper runtime-invoke) :runtime_invoke_void__this___object
(object,intptr,intptr,intptr) + 0x0 (303cdde8 303cdf50) [20099078 - hello.exe]
compiled method: System.OutOfMemoryException:.ctor (string) + 0x0 (303cdd80
303cddcc) [20099078 - hello.exe]
My question are:
1. why use a invoker wrapper? Where did runtime_invoke_void__this___object
comes from?
2. I guess JIT could not compile such runtime_invoke_void__this___object
(object,intptr,intptr,intptr) correctly. But how could I find out the problem
place?
Should I inspect the native definition places. Such as cpu-ppc.md and
mini-ppc.c and so on. Is my direction correct? Is there any another simpler way
to resolve the problem?
I am new to Mono, many thing I need to learn. Please help me.
Thank you in advance!
Pin
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