🚀 go-pugleaf

Hi there,

I have a piece of compiled software from a company that is out of business.  
The code runs on a SunOS platform.  I don't know what the registers or op 
codes of the machine are, but the program hangs, and I dissassembled the 
routine in which it hangs with gdb.

Does anyone have any idea what this code for hmany (maybe, how many?) does?  I 

think there's an infinite loop between 0x3358 and 0x338c, because the longer I 

let it run, the higher the value of register i4 becomes.  But I really have no 

idea what's going on.  Could a register be overflowing?  I'm parsing 
through at 5MB file when a system read seems to fail.  
Anyway, here's the code, MANY thanks in advance.

(gdb) disassemble 0x331c
Dump of assembler code for function hmany:
0x331c <hmany>: save  %sp, -72, %sp
0x3320 <hmany+4>:       sethi  %hi(0x6400), %o0
0x3324 <hmany+8>:       ldd  [ %o0 + 0x110 ], %f0       ! 0x6510 <dnum+24>
0x3328 <hmany+12>:      std  %f0, [ %fp + -8 ]
0x332c <hmany+16>:      sethi  %hi(0x6400), %o2
0x3330 <hmany+20>:      ld  [ %o2 + 0xec ], %i4 ! 0x64ec <ISNEG>
0x3334 <hmany+24>:      add  -8, %fp, %i5
0x3338 <hmany+28>:      ld  [ %i5 ], %f2
0x333c <hmany+32>:      ld  [ %i5 + 4 ], %f3
0x3340 <hmany+36>:      sethi  %hi(0x6400), %o3
0x3344 <hmany+40>:      ldd  [ %o3 + 0xf8 ], %f4        ! 0x64f8 <dnum>
0x3348 <hmany+44>:      fcmped  %f2, %f4
0x334c <hmany+48>:      nop
0x3350 <hmany+52>:      fbug  0x3394 <hmany+120>
0x3354 <hmany+56>:      sethi  %hi(0x6400), %o4
0x3358 <hmany+60>:      ldd  [ %o4 + 0x118 ], %f6       ! 0x6518 <dnum+32>
0x335c <hmany+64>:      ld  [ %i5 ], %f8
0x3360 <hmany+68>:      ld  [ %i5 + 4 ], %f9
0x3364 <hmany+72>:      fmuld  %f8, %f6, %f10
0x3368 <hmany+76>:      sethi  %hi(0x6400), %o3
0x336c <hmany+80>:      inc  %i4
0x3370 <hmany+84>:      st  %f10, [ %i5 ]
0x3374 <hmany+88>:      st  %f11, [ %i5 + 4 ]
0x3378 <hmany+92>:      ld  [ %i5 ], %f2
0x337c <hmany+96>:      ld  [ %i5 + 4 ], %f3
0x3380 <hmany+100>:     ldd  [ %o3 + 0xf8 ], %f4
0x3384 <hmany+104>:     fcmped  %f2, %f4
0x3388 <hmany+108>:     nop
0x338c <hmany+112>:     fble,a   0x3358 <hmany+60>
0x3390 <hmany+116>:     sethi  %hi(0x6400), %o4
0x3394 <hmany+120>:     ret
0x3398 <hmany+124>:     restore  %g0, %i4, %o0
End of assembler dump.

----------------
Steve Silberberg
mailto:stevebo@onramp.net
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