[ECOS] the output information from simulator

["Young Jay" <young_jay at sohu dot com>]

Hello, all:

I made an ARM simulator package referring to powerpc simulator. I built eCos library for this ARM simulator as well as the examples provided by eCos. But I can't make the excutable file run through. The step is:

/*****************************************************************************/
$ arm-elf-gdb -nw hello
GNU gdb 5.3 (eCosCentric)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-cygwin --target=arm-elf"...
(gdb) target sim
Connected to the simulator.
(gdb) load
Loading section .rom_vectors, size 0x40 vma 0x8000
Loading section .text, size 0x79e0 vma 0x8040
Loading section .rodata, size 0x280 vma 0xfa20
Loading section .data, size 0x2e0 vma 0xfca0
Start address 0x8040
Transfer rate: 261120 bits in <1 sec.
(gdb) run
Starting program: /home/dell/ecos-targets/application/hello
/*****************************************************************************/

The program is still running, but no output information is displayed. That is, the function "printf" in the test code can't redirect the output string to my cygwin window.  When I use "Ctrl+C" to interrupt the running program, I got information as follows, which indicates that the program are running in a loop of function cyg_hal_plf_serial_putc in file hal_diag.c:

//////////////////////////////////////////////////////////////
Program received signal SIGINT, Interrupt.
cyg_hal_plf_serial_putc (__ch_data=0xd800000, c=36 '$')
    at /ecos-c/cygwin/opt/ecos/ecos-2.0/packages/hal/arm/armulator/v2_0/src/hal_
diag.c:181
181             HAL_READ_UINT8(base+CYG_DEV_LSR, lsr);
//////////////////////////////////////////////////////////////


Could you help to explain how to redirect the output to the cygwin window so as to see the "printf" information? Thanks a lot!


Best regards,
Young Jay

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