[okl4-developer] About Iguana_ex_pagefault.

[유호철]

Dear all, 
 Hi. 
 My L4 version ---> okl4 1.4.1.1
 I make 'dynamic server loader'. 
 This 'dynamic server loader' is able to load server during system
opearating. 
 But, Loaded server by this loader meet a problem. 
 
 ###### Dynamic Server loader Sequence layout
 Let's assume new server name is TCS.   
 [1] Build system make TCS elf file at 'build/iguana/bin'. 
 But kernel image(zImage.bin) do not include TCS Server. 
 kernel image download and system boot.... 
 [2] I give order that TCS server load.
 'dynamic server loader' make boot record.(bootinfo same format)
 [3] 'Dynamic server loader' call bi_execute() with boot record. 
   
    And TCS server loaded successfully. 
 
 In this case, we must verify TCS server`s operating. 
 So, I add printf() in TCS server`s main function,. follow as...
-------------------------------------------------------------------
 int main(int argc, char **argv)
 {
 
    iguana_cb_handle = cb_attach(__callback_buffer);

    printf("Server load success.\n");
    server_loop();
    assert(!"Should reach here\n");
    return 0;
}
-------------------------------------------------------------------
 
 But, occur error in printf(). error message follow....
--------------------------------------------------------------------
<iguana_server> No memory section
Invalid read fault (4): 0x00000024 Thread: 26c001 Module: (unknown module)
IP: 0x00d01b08 SP: 0x00510ee0
Stack trace back:
 <0x00510ee0> : 0x00000024
 <0x00510ee4> : (nil)
 <0x00510ee8> : 0x00d01aa4
 <0x00510eec> : 0x00510ef7
 <0x00510ef0> : 0x00d015f8
 <0x00510ef4> : 0x4950b000
 <0x00510ef8> : 0x00d06648
 <0x00510efc> : 0x00d0f004
 <0x00510f00> : (nil)
 <0x00510f04> : (nil)
Objtable:
B-tree 0x00119068
Page address[0x001137fc]
0x001110e0 12b000 0x001113b0 12c000 0x00111320 130000 0x00111170 140000
0x00111368 150000 0x00111560 160000 0x00111758 170000  <00116000:00116fff> 
 0x001110e0
  <0012b000:0012bfff>   0x001113b0
  <0012c000:0012ffff>   0x00111320
  <00130000:0013ffff>   0x00111170
  <00140000:0014ffff>   0x00111368
  <00150000:0015ffff>   0x00111560
  <00160000:0016ffff>   0x00111758
  <00170000:0017ffff>   0x00111998
  <00180000:0018ffff>   0x00111ab8
  <00200000:00208fff>   0x00111200
  <0020a000:0020afff>   0x001111b8
  <0020b000:0020bfff>   0x001112d8
  <0020c000:0020ffff>   0x00111128
  <00210000:00210fff>   0x00111248
  <00300000:00308fff>   0x001113f8
  <00309000:00309fff>   0x001114d0
  <0030a000:0030afff>   0x001115a8
  <0030b000:0030bfff>   0x001116c8
  <0030c000:0030ffff>   0x00111518
  <00310000:00310fff>   0x00111440
  <00400000:00408fff>   0x001115f0
  <00409000:00409fff>   0x001117a0
  <0040a000:0040afff>   0x00111878
  <0040b000:0040bfff>   0x001118c0
  <0040c000:0040ffff>   0x00111710
  <00410000:00410fff>   0x00111638
  <00500000:00509fff>   0x001117e8
  <0050a000:0050afff>   0x00111908
  <0050b000:0050bfff>   0x00111a28
  <0050c000:0050ffff>   0x00111a70
  <00510000:00510fff>   0x00111b00
  <00511000:00511fff>   0x00111830
  <00600000:00601fff>   0x00111050
  <00700000:007fffff>   0x00111098
  <00800000:008fffff>   0x00111290
  <00900000:009fffff>   0x00111488
  <00a00000:00afffff>   0x00111680
  <00b00000:00bfffff>   0x00111950
  <00c00000:00cfffff>   0x001119e0
  <00d00000:00d06fff>   0x00111b48
  <00d0f000:00d0ffff>   0x00111b90
------------------------------------------------------------------------
  if delete printf(), not occur anything error.
  Above error occur iguana_ex_pagefault_impl() function. 
  well then, Why call "iguana_ex_pagefault_impl" fundtion in printf(). 
  I do not find where call iguana_ex_pagefault_impl(). 
  
  
  I think that unterstanding is difficult. 
  At result, most important question is follow.
  [1] Why call "iguana_ex_pagefault_impl" fundtion in printf().
  [2] In this case, between [My TCS server] and [Serial server] use IPC ?  

  
   Thank in advance.
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