2012/5/18 HWSW Development <[email protected]> > The macro is defined in arch/x86/include/asm/calling.h > > Regards, > Rooney > > > 2012/5/18 Bill Traynor <[email protected]> > >> >> >> On Thu, May 17, 2012 at 10:37 PM, 王哲 <[email protected]> wrote: >> >>> >>> >>> 2012/5/17 Javier Martinez Canillas <[email protected]> >>> >>>> On Thu, May 17, 2012 at 3:59 PM, 王哲 <[email protected]> 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 >>>> > >>>> > _______________________________________________ >>>> > Kernelnewbies mailing list >>>> > [email protected] >>>> > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >>>> > >>>> >>>> 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<http://lxr.free-electrons.com/source/arch/cris/include/arch-v32/arch/irq.h#L32> >>> - arch/cris/include/arch-v10/arch/irq.h, line >>> 85<http://lxr.free-electrons.com/source/arch/cris/include/arch-v10/arch/irq.h#L85> >>> - arch/sparc/include/asm/asmmacro.h, line >>> 27<http://lxr.free-electrons.com/source/arch/sparc/include/asm/asmmacro.h#L27> >>> >>> is not in x86 Architecture. >>> >> >> Couldn't you find it by doing something like this? In your kernel source >> tree: >> >> $cd arch/x86 >> $grep -ircl ".macro SAVE_ALL" * >> >> >> >> >>> Best regards, >>>> >>>> -- >>>> Javier Martínez Canillas >>>> (+34) 682 39 81 69 >>>> Barcelona, Spain >>>> >>> >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> [email protected] >>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >>> >>> >> >> _______________________________________________ >> Kernelnewbies mailing list >> [email protected] >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> Thanks for all. > I have sloved the problem. this macro is written with assembly ，not c . No wonder that i don't search it out in the lxr.linux.no
arch/x86/kernel/entry_32.s 192 .macro SAVE_ALL 193 cld 194 PUSH_GS 195 pushl_cfi %fs 196 /*CFI_REL_OFFSET fs, 0;*/ 197 pushl_cfi %es 198 /*CFI_REL_OFFSET es, 0;*/ 199 pushl_cfi %ds 200 /*CFI_REL_OFFSET ds, 0;*/ 201 pushl_cfi %eax 202 CFI_REL_OFFSET eax, 0 203 pushl_cfi %ebp 204 CFI_REL_OFFSET ebp, 0 205 pushl_cfi %edi 206 CFI_REL_OFFSET edi, 0 207 pushl_cfi %esi 208 CFI_REL_OFFSET esi, 0 209 pushl_cfi %edx 210 CFI_REL_OFFSET edx, 0 211 pushl_cfi %ecx 212 CFI_REL_OFFSET ecx, 0 213 pushl_cfi %ebx 214 CFI_REL_OFFSET ebx, 0 215 movl $(__USER_DS), %edx 216 movl %edx, %ds 217 movl %edx, %es 218 movl $(__KERNEL_PERCPU), %edx 219 movl %edx, %fs 220 SET_KERNEL_GS %edx 221 .endm -- ---------------------------------------------------------------------------------------------- WangZhe Xi'an Shanxi CHINA qq 785924174 blog blog.163.com/zhe_wang_2009 ----------------------------------------------------------------------------------------------
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