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From "Ilya Berezhniuk (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (HARMONY-5035) [drlvm][jit][JET] Parameters are passed incorrectly to rt_helper_ti_field_modification stub
Date Fri, 09 Nov 2007 16:00:50 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-5035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ilya Berezhniuk reopened HARMONY-5035:
--------------------------------------


I've checked the bug with r593136, it still appears.
Both FieldModificationTest and FieldModification002Test JPDA tests still fail on x86_64.

JITted code of method calling rt_helper_ti_field_modification stub is below.
5th parameter is still rewritten with one of first 4 parameters:

------------Windows--------------- 
00000000064F0080  lea         rdx,[rbp-220h] 
00000000064F0087  sub         rsp,8 
00000000064F008B  mov         rcx,5A25C30h 
00000000064F0095  mov         rdx,5A260C0h 
00000000064F009F  mov         r8,1 
00000000064F00A9  mov         r9,0 
00000000064F00B3  mov         qword ptr [rsp],rdx 
00000000064F00B7  mov         dword ptr [rbp-214h],1 
00000000064F00C1  mov         dword ptr [rbp-218h],1 
00000000064F00CB  mov         r10,2AB7AE0h 
00000000064F00D5  call        r10  
00000000064F00D8  add         rsp,8 
---------------------------------------- 
---------------Linux------------------ 
0x2aaabe2fd080: lea    0xfffffffffffffde0(%rbp),%rdx
0x2aaabe2fd087: sub    $0x8,%rsp
0x2aaabe2fd08b: mov    $0xf7bf30,%rdi
0x2aaabe2fd095: mov    $0xf80550,%rsi
0x2aaabe2fd09f: mov    $0x1,%rdx
0x2aaabe2fd0a9: mov    $0x0,%rcx
0x2aaabe2fd0b3: mov    %rdx,%r8
0x2aaabe2fd0b6: movl   $0x1,0xfffffffffffffdec(%rbp)
0x2aaabe2fd0c0: movl   $0x1,0xfffffffffffffde8(%rbp)
0x2aaabe2fd0ca: mov    $0x2aaaac2bd500,%r9
0x2aaabe2fd0d4: rex64Z callq  *%r9
0x2aaabe2fd0d7: add    $0x8,%rsp
---------------------------------------- 


> [drlvm][jit][JET] Parameters are passed incorrectly to rt_helper_ti_field_modification
stub
> -------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5035
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5035
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: x86_64
>            Reporter: Ilya Berezhniuk
>            Assignee: Alexey Varlamov
>
> JET passes parameters incorrectly when calling rt_helper_ti_field_modification TI stub
on x86_64.
> This prevents jvmti_field_modification_callback from working correctly.
> This problem appears on both Windows and Linux.
> The following code is generated:
> ------------Windows---------------
> 0000000005AE02D9  lea         rcx,[rbp-230h] 
> 0000000005AE02E0  sub         rsp,10h 
> 0000000005AE02E4  mov         rcx,537ED70h 
> 0000000005AE02EE  mov         rdx,537F0C8h 
> 0000000005AE02F8  mov         r8,0Fh 
> 0000000005AE0302  mov         r9,0 
> 0000000005AE030C  mov         qword ptr [rsp],rcx 
> 0000000005AE0310  mov         r10,2AB7AE0h 
> 0000000005AE031A  call        r10  
> 0000000005AE031D  add         rsp,10h 
> ----------------------------------------
> ---------------Linux------------------
> 0x2aaabe2fa041: movl   $0xad788000,0xfffffffffffffde0(%rbp)
> .............................
> 0x2aaabe2fa080: lea    0xfffffffffffffde0(%rbp),%rdx
> 0x2aaabe2fa087: mov    $0xf09990,%rdi
> 0x2aaabe2fa091: mov    $0xf278a0,%rsi
> 0x2aaabe2fa09b: mov    $0x1,%rdx
> 0x2aaabe2fa0a5: mov    $0x0,%rcx
> 0x2aaabe2fa0af: mov    %rdx,%r8
> 0x2aaabe2fa0b2: movl   $0x1,0xfffffffffffffdec(%rbp)
> 0x2aaabe2fa0bc: movl   $0x1,0xfffffffffffffde8(%rbp)
> 0x2aaabe2fa0c6: mov    $0x2aaaac2bf480,%r9
> 0x2aaabe2fa0d0: rex64Z callq  *%r9
> ----------------------------------------
> On Windows RCX register holding an address of new field value is reassigned before storing
it to stack .
> On Linux RDX register is reassigned before storing its value to R8 register.

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