= 2009-02-01 =

 * [備忘] 舊的 sarge repository 會留在 http://archive.debian.org/debian/dists/sarge/
   * [參考] http://lists.debian.org/debian-user/2008/11/msg02570.html

== CGDB ==

 * [參考] http://www.cmlab.csie.ntu.edu.tw/~daniel/linux/cgdb.html 
{{{
基本操作方法

    * ESC -- switch to source window
    * i -- switch to GDB mode
    * spacebar -- 在目前的地方設一個中斷點 (source window mode)
    * t -- 在目前的地方設一個暫時中斷點 (source window mode)
    * '-' -- 縮減 source window
    * '=' -- 增加 source window
}}}
 * [參考] http://vision.twbbs.org/~letoh/blog/2007/04/13/cgdb-curses-gdb/
{{{

}}}
 * [參考] http://blogkrogh.blogspot.com/2008/05/gdb-xxgdb-ddd.html
   * kgdb 的介面看起來不錯。cgdb 有中文支援問題?! gdb 也有 ui 界面:
{{{
$ gdb -tui 程式碼
}}}

== BUGFIX: jfbterm (5) ==

 * （續 [wiki:jazz/08-11-15 08-11-15@GMT-6 BUGFIX: jfbterm (1)]）
 * （續 [wiki:jazz/08-11-16 08-11-16@GMT-6 BUGFIX: jfbterm (2)]）
 * （續 [wiki:jazz/08-11-17 08-11-17@GMT-6 BUGFIX: jfbterm (3)]）
 * （續 [wiki:jazz/09-01-14 09-01-14@GMT+8 BUGFIX: jfbterm (4)]）

{{{
#!C
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <linux/fb.h>       // include frame buffer header files
#include <sys/ioctl.h>

int main(void)
{
  int fbfd = 0 ;            // frame buffer file description

  /* Get device independent unchangeable information about a frame buffer
   * device and a specific video mode by FBIOGET_FSCREENINFO ioctl. */
  struct  fb_fix_screeninfo finfo;

  fbfd = open( "/dev/fb0" , O_RDWR );
  if ( !fbfd )
  {
    printf( "Error: cannot open framebuffer device.\n" );
    exit(1);
  }
  printf("The framebuffer device was opened successfully.\n");

  /* Get fixed screen information */
  if ( ioctl ( fbfd ,  FBIOGET_FSCREENINFO , &finfo )  )
  {
    printf("Error reading fixed screen information.\n");
    exit(2);
  } else {
    printf("Succesfully Read the Fixed Screen Information\n");
  }

  printf("fb_fix_screeninfo.smem_len = %d\n", finfo.smem_len);
  printf("fb_fix_screeninfo.mmio_len = %d\n", finfo.mmio_len);
}
}}}

 * 在 Ubuntu Intrepid 上執行結果
{{{
root@intrepid:~# uname -a
Linux intrepid 2.6.27-7-server #1 SMP Tue Nov 4 20:16:57 UTC 2008 x86_64 GNU/Linux
root@intrepid:~# ./fbinfo
The framebuffer device was opened successfully.
Succesfully Read the Fixed Screen Information
fb_fix_screeninfo.smem_len = 16777216
fb_fix_screeninfo.mmio_len = 0
}}}
 * 以下是在 Debian Sarge 上執行結果，值得一提的是 jfbterm 在 2.6.8 核心上可以正常執行。(不過還有字型問題需要調整)
{{{
root@wsu-admin:~# uname -a
Linux wsu-admin 2.6.8-2-386 #1 Tue Aug 16 12:46:35 UTC 2005 i686 GNU/Linux
root@wsu-admin:~# ./fbinfo
The framebuffer device was opened successfully.
Succesfully Read the Fixed Screen Information
fb_fix_screeninfo.smem_len = 65536
fb_fix_screeninfo.mmio_len = 0
}}}
{{{
root@wsu-admin:~# jfbterm
jfbterm - Kanji on framebuffer console Version 0.4.7
       Copyright (C) 2003 Fumitoshi UKAI
        Copyright (C) 1999-2000 Noritoshi Masuichi
This program is based on KON2
        Copyright (C) 1992-1996 Takashi MANABE

(**) : Configuration file `/etc/jfbterm.conf'
.... 略 ....
exec : /bin/bash ioctl FBIOGET_CON2FBMAP: Invalid argument
color 0 : 0, 0
color 1 : 2a, 2a
color 2 : 2a, 2a
color 3 : 2a, 2a
color 4 : 2a, 2a
color 5 : 2a, 2a
color 6 : 2a, 2a
color 7 : 2a, 2a
color 8 : 15, 15
color 9 : 3f, 3f
color 10 : 3f, 3f
color 11 : 3f, 3f
color 12 : 3f, 3f
color 13 : 3f, 3f
color 14 : 3f, 3f
color 15 : 3f, 3f
}}}
 * 以下是在 Debian Etch 上執行結果，有趣的是 jfbterm 0.4.7-7 在 2.6.18 上執行，縱使有 cannot mmap(mmio) : Invalid argument 的錯誤訊息，但仍舊可以正常進入 jfbterm 的環境。
{{{
root@etch:~# uname -a
Linux etch 2.6.18-4-686 #1 SMP Wed May 9 23:03:12 UTC 2007 i686 GNU/Linux
root@etch:~# ./fbinfo
The framebuffer device was opened successfully.
Succesfully Read the Fixed Screen Information
fb_fix_screeninfo.smem_len = 1920000
fb_fix_screeninfo.mmio_len = 0
}}}
{{{
root@etch:~# jfbterm
jfbterm - Kanji on framebuffer console Version 0.4.7
       Copyright (C) 2003 Fumitoshi UKAI
        Copyright (C) 1999-2000 Noritoshi Masuichi
This program is based on KON2
        Copyright (C) 1992-1996 Takashi MANABE

(**) : Configuration file `/etc/jfbterm.conf'
... 略 ...
exec : /bin/bash color 0 : 0, 0
color 1 : 15, 15
color 2 : 540, 540
color 3 : 555, 555
color 4 : a800, a800
color 5 : a815, a815
color 6 : ad40, ad40
color 7 : ad55, ad55
color 8 : 52aa, 52aa
color 9 : 52bf, 52bf
color 10 : 57ea, 57ea
color 11 : 57ff, 57ff
color 12 : faaa, faaa
color 13 : fabf, fabf
color 14 : ffea, ffea
color 15 : ffff, ffff
cannot mmap(mmio) : Invalid argument
}}}
 * 
{{{
file jfbterm
set args -e ls
show args
break fbcommon.c:500
break fbcommon.c:557
break fbcommon.c:566
break term.c:103
break term.c:284
r
c
c
c
bt
}}}
{{{
Breakpoint 4, tterm_final (p=0x6147c0) at term.c:103
(gdb) bt
#0  tterm_final (p=0x6147c0) at term.c:103
#1  0x0000000000408adf in sigchld (sig=<value optimized out>) at term.c:82
#2  <signal handler called>
#3  0x00007f5dfc00f433 in select () from /lib/libc.so.6
#4  0x0000000000408873 in tterm_start (p=0x6147c0, tn=<value optimized out>, en=<value optimized out>) at term.c:192
#5  0x0000000000402cf2 in main (argc=<value optimized out>, argv=0x7fff049477f8) at main.c:438
}}}
}}}