Re: [ECOS] Fwd: Re: [ECOS] trying to get a feel for Ecos ...

[Jonathan Larmour <jifl at eCosCentric dot com>]

Philippe Moutarlier wrote:
> I could get redboot to go. Now I am trying to build the simple "basic" example 
> of the book. 
> - opened i386 PC/default target
> - startup type = RAM
> - Use RedBoot Monitor = GDB stubs
>
> Saved in the build tree , compile and there it seems that all the registers 
> (EAX ...) are undefined. I checked that the file 
>  ecos_install/include/cyg/hal/i386_stub.h:
>
> is installed in the build tree.
>
> Anything else I should check ?
I think I've worked it out. hal_syscall.c includes plf_stub.h which only 
includes i386_stub.h if CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS is defined. The 
code in hal_syscall.c only gets included if CYGSEM_REDBOOT_BSP_SYSCALLS 
which should only be enabled if this is redboot. The fact it's trying to 
build it when CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS is evidently _not_ 
defined makes me think you are reusing the same build tree between 
building redboot and building an eCos application. RedBoot has its own 
reqwuirements of eCos - your application will need different requirements 
and so a different configuration tree.

So just start with the default config in a clean empty build tree and you 
should be fine.

Jifl

>  make[1]: Entering directory 
> `/home/philippe/ecos_build/ecos_build/hal/i386/arch/current'
> i386-elf-gcc -c  -I/home/philippe/ecos_build/ecos_install/include 
> -I/home/philippe/ecos/ecos/packages/hal/i386/arch/current 
> -I/home/philippe/ecos/ecos/packages/hal/i386/arch/current/src 
> -I/home/philippe/ecos/ecos/packages/hal/i386/arch/current/tests -I. 
> -I/home/philippe/ecos/ecos/packages/hal/i386/arch/current/src/ -Wall 
> -Wpointer-arith -Wstrict-prototypes -Winline -Wundef -Woverloaded-virtual -g 
> -O2 -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fvtable-gc 
> -finit-priority -Wp,-MD,src/hal_syscall.tmp -o 
> src/hal_i386_arch_hal_syscall.o 
> /home/philippe/ecos/ecos/packages/hal/i386/arch/current/src/hal_syscall.c
> /home/philippe/ecos/ecos/packages/hal/i386/arch/current/src/hal_syscall.c: In 
> function `hal_syscall_handler':
> /home/philippe/ecos/ecos/packages/hal/i386/arch/current/src/hal_syscall.c:113: 
> warning: implicit declaration of function `get_register'
> /home/philippe/ecos/ecos/packages/hal/i386/arch/current/src/hal_syscall.c:113: 
> `EAX' undeclared (first use in this function)
[snip rest ]

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