some sse exception

Newsgroups	pl.comp.programming
Date	2015-08-20 01:30 -0700
Message-ID	<f835f8f6-5f3f-4cb8-9a68-abeb9d6d715d@googlegroups.com> (permalink)
Subject	some sse exception
From	firr <profesor.fir@gmail.com>

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as i said i have such sse code 

__attribute__((force_align_arg_pointer)) 
 __m128i  mandelbrot_n_sse(  __m128 cre,  __m128 cim,  int max_iter ) 

{ 
   __m128 re = _mm_setzero_ps(); 
   __m128 im = _mm_setzero_ps(); 


      __m128 _1 = _mm_set_ps1(1.); 
     __m128 _4 = _mm_set_ps1(4.0); 

  __m128 iteration_counter = _mm_set_ps1(0.); 


    for(int n=0; n<=max_iter; n++) 
    { 

    __m128 re2 =  _mm_mul_ps(re, re); 
    __m128 im2 =  _mm_mul_ps(im, im); 
    __m128 radius2 = _mm_add_ps(re2,im2); 

    __m128 compare_mask = _mm_cmplt_ps( radius2, _4); 
    iteration_counter = _mm_add_ps( iteration_counter, _mm_and_ps(compare_mask, _1) ); 
    if (_mm_movemask_ps(compare_mask)==0) break; 

    __m128 ren = _mm_add_ps( _mm_sub_ps(re2, im2), cre); 
    __m128 reim = _mm_mul_ps(re, im); 

    __m128 imn = _mm_add_ps( _mm_add_ps(reim, reim), cim); 

     re = ren; 
     im = imn; 


    } 

    __m128i n = mm_cvtps_epi32(iteration_counter); 
    return n; 

} 
yesterday i un-mmasked invalid-operation-mask 
in MXCSR (bit7) 

if masked the code works ok if unmasked i got 
exception, the basic exception info is 

exception code: c000 02b5 (STATUS_FLOAT_MULTIPLE_TRAPS) 
flags: 0 
adress: 0040 d477 

the code seen in olly debug is 

0040D450   $ 55             PUSH EBP 
0040D451   . 89E5           MOV EBP,ESP 
0040D453   . 83E4 F0        AND ESP,FFFFFFF0 
0040D456   . 83EC 10        SUB ESP,10 
0040D459   . 8B4D 08        MOV ECX,DWORD PTR SS:[EBP+8] 
0040D45C   . 0F290424       MOVAPS DQWORD PTR SS:[ESP],XMM0 
0040D460   . 85C9           TEST ECX,ECX 
0040D462   . 78 5B          JS SHORT program.0040D4BF 
0040D464   . 0F57C0         XORPS XMM0,XMM0 
0040D467   . 31C0           XOR EAX,EAX 
0040D469   . 0F28D0         MOVAPS XMM2,XMM0 
0040D46C   . 0F28E0         MOVAPS XMM4,XMM0 
0040D46F   . EB 1A          JMP SHORT program.0040D48B 
0040D471   > 0F59D4         MULPS XMM2,XMM4 
0040D474   . 83C0 01        ADD EAX,1 
0040D477   . 0F5CF5         SUBPS XMM6,XMM5 
0040D47A   . 0F282424       MOVAPS XMM4,DQWORD PTR SS:[ESP] 
0040D47E   . 39C1           CMP ECX,EAX 
0040D480   . 0F58E6         ADDPS XMM4,XMM6 
0040D483   . 0F58D2         ADDPS XMM2,XMM2 
0040D486   . 0F58D1         ADDPS XMM2,XMM1 
0040D489   . 7C 2E          JL SHORT program.0040D4B9 
0040D48B   > 0F28F4         MOVAPS XMM6,XMM4 
0040D48E   . 0F28EA         MOVAPS XMM5,XMM2 
0040D491   . 0F283D 9008440>MOVAPS XMM7,DQWORD PTR DS:[440890] 
0040D498   . 0F59F4         MULPS XMM6,XMM4 
0040D49B   . 0F59EA         MULPS XMM5,XMM2 
0040D49E   . 0F28DE         MOVAPS XMM3,XMM6 
0040D4A1   . 0F58DD         ADDPS XMM3,XMM5 
0040D4A4   . 0FC21D 8008440>CMPLTPS XMM3,DQWORD PTR DS:[440880] 
0040D4AC   . 0F54FB         ANDPS XMM7,XMM3 
0040D4AF   . 0F50D3         MOVMSKPS EDX,XMM3 
0040D4B2   . 85D2           TEST EDX,EDX 
0040D4B4   . 0F58C7         ADDPS XMM0,XMM7 
0040D4B7   .^75 B8          JNZ SHORT program.0040D471 
0040D4B9   > 66:0F5B        ???                                      ;  Unknown command 
0040D4BC     C0             DB C0 
0040D4BD   . C9             LEAVE 
0040D4BE   . C3             RETN 
0040D4BF   > 0F57C0         XORPS XMM0,XMM0 
0040D4C2   .^EB F5          JMP SHORT program.0040D4B9 
0040D4C4     8DB6 00000000  LEA ESI,DWORD PTR DS:[ESI] 
0040D4CA     8DBF 00000000  LEA EDI,DWORD PTR DS:[EDI] 

could someone hint why it is crashing?

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some sse exception firr <profesor.fir@gmail.com> - 2015-08-20 01:30 -0700
  Re: some sse exception platformowe głupki <NOSPAMtestowanije@go2.pl> - 2015-08-20 19:36 +0200
    Re: some sse exception platformowe głupki <NOSPAMtestowanije@go2.pl> - 2015-08-21 21:14 +0200
      Re: some sse exception firr <profesor.fir@gmail.com> - 2015-08-21 13:09 -0700

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