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SubjectRe: [RFC][PATCH] tracing/syscalls: Have ia32 compat syscalls show raw format
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On Tue, 2013-02-12 at 13:42 -0500, Steven Rostedt wrote:

> Really, I converted:
>
> lls-1127 [005] d... 936.409188: sys_recvfrom(fd: 0, ubuf: 4d560fc4, size: 0, flags: 8048034, addr: 8, addr_len: f7700420)
> lls-1127 [005] d... 936.409190: sys_recvfrom -> 0x8a77000
> lls-1127 [005] d... 936.409211: sys_lgetxattr(pathname: 0, name: 1000, value: 3, size: 22)
> lls-1127 [005] d... 936.409215: sys_lgetxattr -> 0xf76ff000
> lls-1127 [005] d... 936.409223: sys_dup2(oldfd: 4d55ae9b, newfd: 4)
> lls-1127 [005] d... 936.409228: sys_dup2 -> 0xfffffffffffffffe
>
> To:
> lls-1100 [005] d... 97.051616: sys_compat_syscall(NR: 2d, arg1: 0, arg2: 4d560fc4, arg3: 0, arg4: 8048034, arg5: 8, arg6: f77bb420)

0x2d = 45

> lls-1100 [005] d... 97.051619: sys_compat_syscall -> 0x91fd000
> lls-1100 [005] d... 97.051640: sys_compat_syscall(NR: c0, arg1: 0, arg2: 1000, arg3: 3, arg4: 22, arg5: ffffffff, arg6: 0)

0xc0 = 192

> lls-1100 [005] d... 97.051644: sys_compat_syscall -> 0xf77ba000
> lls-1100 [005] d... 97.051652: sys_compat_syscall(NR: 21, arg1: 4d55ae9b, arg2: 4, arg3: 4d560fc4, arg4: 4d55ae9b, arg5: 0, arg6: fff3ee78)

0x21 = 33

> lls-1100 [005] d... 97.051658: sys_compat_syscall -> 0xfffffffffffffffe
>

syscall nr | ia32 syscall | x86_64syscall
----------------+-------------------+--------------
45 | sys_brk | sys_recvfrom
192 | sys_mmap2 | sys_lgetxattr
33 | sys_access | sys_dup2

Makes more sense now doesn't it.

-- Steve




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