Can't find macro SAVE_ALL

[王哲 <wangzhe5004@xxxxxxxxx>]

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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