2012/5/17 Javier Martinez Canillas <martinez.javier@xxxxxxxxx>
> _______________________________________________On Thu, May 17, 2012 at 3:59 PM, 王哲 <wangzhe5004@xxxxxxxxx> wrote:
> Hi all:
> i am a kernelnewbies.during studying the linux system call,and
> analysis the following code (linux kernel 2.6.38)
>
> 529ENTRY(system_call)
> 530 RING0_INT_FRAME # can't unwind into user space anyway
> 531 pushl %eax # save orig_eax
> 532 CFI_ADJUST_CFA_OFFSET 4
> 533 SAVE_ALL
> 534 GET_THREAD_INFO(%ebp)
> 535 # system call tracing in operation / emulation
> 536 testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
> 537 jnz syscall_trace_entry
> 538 cmpl $(nr_syscalls), %eax
> 539 jae syscall_badsys
> 540syscall_call:
> 541 call *sys_call_table(,%eax,4)
> 542 movl %eax,PT_EAX(%esp) # store the return value
>
> Question:
> i want to see what the SAVE_ALL have done.and can't find the
> Macro SAVE_ALL
> if anyone knows please help
>
> Thanks
>
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>
http://lxr.free-electrons.com/ident?i=SAVE_ALL
Thank you Javier Martinez Canillas for reply!
but the rearch result :
Defined as a preprocessor macro in:
- arch/cris/include/arch-v32/arch/irq.h, line 32
- arch/cris/include/arch-v10/arch/irq.h, line 85
- arch/sparc/include/asm/asmmacro.h, line 27
is not in x86 Architecture.
Best regards,
--
Javier Martínez Canillas
(+34) 682 39 81 69
Barcelona, Spain
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