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From "Ilya Berezhniuk (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-5035) [drlvm][jit][x86_64][JET] Parameters are passed incorrectly to rt_helper_ti_field_modification stub
Date Sun, 28 Oct 2007 23:23:50 GMT
[drlvm][jit][x86_64][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


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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