[Mono-dev] How to stop and debug native code of a method?
Hi All, I am porting mono to a platform, I wander if I want to trace a method(compiled into native code) how do You stop the program running when entering into this method? Gdb can Watch the PC register, but it is very slow, I have wait for tens of minutes. Is there any efficient way to interrupt some method running? Thank you in advance. Pin Rocket Software, Inc. and subsidiaries ? 77 Fourth Avenue, Waltham MA 02451 ? +1 877.328.2932 ? +1 781.577.4321 Unsubscribe From Commercial Email - unsubscr...@rocketsoftware.com Manage Your Subscription Preferences - http://info.rocketsoftware.com/GlobalSubscriptionManagementEmailFooter_SubscriptionCenter.html Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy This communication and any attachments may contain confidential information of Rocket Software, Inc. All unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify Rocket Software immediately and destroy all copies of this communication. Thank you. ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
[Mono-dev] Could sgen works with pthread?
Hi All, I am porting mono into old aix host, my platform doesn't support __thread Key word. I notice https://bugzilla.novell.com/show_bug.cgi?id=660413 Described that mono doesn't support sgen with pthread. I am using Mono 4.2.1, does this release overcome the limitation? I have research the source code it seems not. But I am not very sure. Thank you in advance. Pin Rocket Software, Inc. and subsidiaries ? 77 Fourth Avenue, Waltham MA 02451 ? +1 877.328.2932 ? +1 781.577.4321 Unsubscribe From Commercial Email - unsubscr...@rocketsoftware.com Manage Your Subscription Preferences - http://info.rocketsoftware.com/GlobalSubscriptionManagementEmailFooter_SubscriptionCenter.html Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy This communication and any attachments may contain confidential information of Rocket Software, Inc. All unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify Rocket Software immediately and destroy all copies of this communication. Thank you. ___ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
[Mono-dev] How to debug native code?
Hi all, I am trying to port Mono into Aix host, I have am very fundamental question: How are you guys debug native code? Because JIT compiler compiles assembly into native code then JIT invoke it, I am very curious if there errors in native code How do you find out the bug and fix it. And if you updates the cpu-.md or -codegen.h how do you verify your changes is ok? There must be somewhat effect method to debug the JIT and it specific architecture. Since I am porting Mono into Aix, I got assembler code which disassembled from native code: 0: 7c 08 02 a6 mflrr0 4: 90 01 00 04 stw r0,4(r1) 8: 94 21 ff b0 stwur1,-80(r1) c: 93 61 00 48 stw r27,72(r1) 10:93 e1 00 4c stw r31,76(r1) 14:7c 3f 0b 78 mr r31,r1 18:90 7f 00 28 stw r3,40(r31) 1c:90 9f 00 2c stw r4,44(r31) 20:90 bf 00 30 stw r5,48(r31) 24:90 df 00 34 stw r6,52(r31) 28:38 60 00 00 li r3,0 2c:90 7f 00 20 stw r3,32(r31) 30:38 60 00 00 li r3,0 34:90 7f 00 24 stw r3,36(r31) 38:80 7f 00 30 lwz r3,48(r31) 3c:2c 03 00 00 cmpwi r3,0 40:41 82 00 a4 beq 0xe4 44:3c 60 20 03 lis r3,8195 48:60 63 e5 04 ori r3,r3,58628 4c:80 63 00 00 lwz r3,0(r3) 50:2c 03 00 00 cmpwi r3,0 54:41 82 00 38 beq 0x8c 58:3d 80 30 3c lis r12,12348 5c:61 8c cd d8 ori r12,r12,52696 60:7d 88 03 a6 mtlrr12 64:4e 80 00 21 blrl 68:7c 64 1b 78 mr r4,r3 6c:7c 9b 23 78 mr r27,r4 70:2c 03 00 00 cmpwi r3,0 74:41 82 00 18 beq 0x8c 78:7f 63 db 78 mr r3,r27 7c:3d 80 30 00 lis r12,12288 80:61 8c 82 90 ori r12,r12,33424 84:7d 88 03 a6 mtlrr12 88:4e 80 00 21 blrl 8c:80 7f 00 2c lwz r3,44(r31) 90:80 83 00 00 lwz r4,0(r3) 94:80 7f 00 28 lwz r3,40(r31) 98:80 bf 00 34 lwz r5,52(r31) 9c:7c a8 03 a6 mtlrr5 a0:4e 80 00 21 blrl a4:48 00 00 38 b 0xdc a8:80 7f 00 1c lwz r3,28(r31) ac:80 7f 00 1c lwz r3,28(r31) b0:90 7f 00 24 stw r3,36(r31) b4:80 7f 00 30 lwz r3,48(r31) b8:80 9f 00 24 lwz r4,36(r31) bc:90 9f 00 40 stw r4,64(r31) c0:90 83 00 00 stw r4,0(r3) c4:3d 80 30 3c lis r12,12348 c8:61 8c cf 50ori r12,r12,53072 cc: 7d 88 03 a6 mtlrr12 d0:4e 80 00 21 blrl d4:80 7f 00 40 lwz r3,64(r31) d8:48 00 00 04 b 0xdc dc:80 7f 00 20 lwz r3,32(r31) e0:48 00 00 38 b 0x118 e4:3c 60 20 03 lis r3,8195 e8:60 63 e5 04 ori r3,r3,58628 ec:80 63 00 00 lwz r3,0(r3) f0: 28 03 00 00 cmplwi r3,0 f4: 40 82 00 40 bne 0x134 f8: 48 00 00 04 b 0xfc fc: 80 7f 00 2c lwz r3,44(r31) 100: 80 83 00 00 lwz r4,0(r3) 104: 80 7f 00 28 lwz r3,40(r31) 108: 80 bf 00 34 lwz r5,52(r31) 10c: 7c a8 03 a6 mtlrr5 110: 4e 80 00 21 blrl 114: 80 7f 00 20 lwz r3,32(r31) 118: 80 1f 00 54 lwz r0,84(r31) 11c: 7c 08 03 a6 mtlrr0 120: 7f ec fb 78 mr r12,r31 124: 83 7f 00 48 lwz r27,72(r31) 128: 83 ff 00 4clwz r31,76(r31) 12c: 38 2c 00 50 addir1,r12,80 130: 4e 80 00 20 blr 134: 3d 80 30 3c lis r12,12348 138: 61 8c cd d8 ori r12,r12,52696 13c: 7d 88 03 a6 mtlrr12 140: 4e 80 00 21 blrl 144: 7c 64 1b 78 mr r4,r3 148: 7c 9b 23 78 mr r27,r4 14c: 2c 03 00 00 cmpwi r3,0 150: 41 82 ff acbeq 0xfc 154: 7f 63 db 78 mr r3,r27 158: 3d 80 30 00 lis r12,12288 15c: 61 8c 82 90 ori r12,r12,33424 160: 7d 88 03 a6 mtlrr12 164: 4e 80 00 21
[Mono-dev] A segement fault on PPC host
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
Rocket Software, Inc. and subsidiaries ? 77 Fourth Avenue, Waltham MA 02451 ?
+1 800.966.3270 ? +1 781.577.4321
Unsubscribe From Commercial Email - unsubscr...@rocketsoftware.com
Manage Your Subscription Preferences -
http://info.rocketsoftware.com/GlobalSubscriptionManagementEmailFooter_SubscriptionCenter.html
Privacy Policy - http://www.rocketsoftware.com/company/legal/privacy-policy
This communication and any attachments may contain confidential information of
Rocket Software, Inc. All unauthorized use, disclosure or distribution is
prohibited. If you are not the intended recipient, please notify Rocket
Software immediately and destroy all copies of this communication. Thank you.
___
Mono-devel-list mailing list
Mono-devel-list@lists.ximian.com
http://lists.ximian.com/mailman/listinfo/mono-devel-list
