[gem5-users] Source and Destination Registers in StaticInst

[Will]

Hello,


I am doing some instruction dependency check related work using the decoder and 
static inst. in gem5 (built for ARM).
However, I found that for some instructions, the member `_destRegIdx` and 
`_srcRegIdx` in `class StaticInst` can't give the right destination and source 
registers. For example,


13900:   e49d5004    pop {r5}        ; (ldr r5, [sp], #4)                     
// From objdump
_destRegIdx = {0, 0, 0, 0, 0, 0, 0, 0},                                         
    // From (gdb) p *curStaticInst
_srcRegIdx = {0 <repeats 34 times>}, 


14554:   e5843000    str r3, [r4]                                               
                    // From objdump
_destRegIdx = {0, 0, 0, 0, 0, 0, 0, 0},                                         
                  // From (gdb) p *curStaticInst
_srcRegIdx = {4, 1542, 1541, 1541, 1541, 3, 0 <repeats 28 times>},


14584:   e8bd0ff0    pop {r4, r5, r6, r7, r8, r9, sl, fp}                       
              // From objdump
_destRegIdx = {0, 0, 0, 0, 0, 0, 0, 0},
_srcRegIdx = {0 <repeats 34 times>}, 


Did I used the wrong function to get the source and destination registers? Or 
there is any easier way to do dependency check using gem5?
Your help is greatly appreciated.


Wil


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