1. Cygwin/GNU Tools

2. The GNU Development Tools … run in a UNIX shell emulation called Cygwin / home tuttle usr local x-arm x-m68k … opt NetOS Cygwin bash

3. Cygwin1.3.22 gcc3.2 Install Possible POSIX files build problem gdbtk Hardware breakpoint with RAVEN Using jeeni gdbThreadx

4. Install Install—delete Cygnus Solution in registry, clean up all the path. One CD for cygwin, xtools and netos6_gnu, the installer will do the above clean up Cygwin 1.3.22, gcc v3.2 Binutils v2.12 Gdb v5.3, gdbtk v5.3 Newlib v1.11, libstdc++ v3.0

5. Covering the Tools w/ graphical FEs Dev. Tools binutils 2.10 gcc 2.95.2 newlib 1.8.1 libstdc++ 2.81 gdb 5.0 Insight/gdbtk

6. GDBTK - Insight – A graphical FE for GDB

7. gdbtk works better To stop, click on “stop” in source window. Improved stability Compatible with tcl 8.4 library Compatible cygwin 1.3.22

8. Hardware breakpoint Hardware breakpoint with RAVEN For detail, refer to netos/howToUseRaven.txt ocdLibRemote with chip options for netsilicon chip instead netsiliconLibRemote

9. Using jeeni Use script gdbnet50.jeeni target rdi e= > To see debug printf in command window need to rebuild libc.a and crt0.o using netos/gnusrc/jeeni.mak need to copy libc.a and crt0.o to netos\lib\32b\gnu

10. gdbThreadx Cool tool to check if there is any stack over flow for threads How to use (arm-gdb) source../../../../gdbThreadx (arm-gdb) b netosStartup Breakpoint 1 at 0x802ce58: file common/bsproot.c, line 372. (arm-gdb) c Continuing. Breakpoint 1, netosStartup (not_used=0) at common/bsproot.c:372372 if (NAFlashCreateSemaphores () == NAFLASH_SEMAPHORE_CREATE_FAILED) (arm-gdb) threadlist Any thread with stack overflow will be marked

11. Pros and Cons of using GNU Tools The GNU development tools are open source GNU tools are the most powerful and flexible development tools which allow to deliver virtually any kind of embedded solution GNU tool flexibility extends beyond the target domain GNU tools are well supported Base distribution does not contain a graphical IDE Documentation is good but widely spread New users can’t get started quickly