1SETARCH(8)                 Linux Programmer's Manual                SETARCH(8)
2
3
4

NAME

6       setarch  -  change reported architecture in new program environment and
7       set personality flags
8

SYNOPSIS

10       setarch <arch> [options] [program [arguments]]
11
12       arch [options] [program [arguments]]
13
14

DESCRIPTION

16       setarch This utility currently only affects the output of uname -m. For
17       example,  on an AMD64 system, running 'setarch i386 program' will cause
18       'program' to see i686 (or other relevant arch)  instead  of  x86_64  as
19       machine type. It also allows to set various personality options.
20

OPTIONS

22       -v     Be verbose.
23
24       -h, --help
25              Display  help  (it is also displayed when setarch takes no argu‐
26              ments).
27
28       -3     Specifies that processes should use a maximum of 3GB of  address
29              space on systems where it is supported (ADDR_LIMIT_3GB).
30
31       -B     Turns on ADDR_LIMIT_32BIT.
32
33       -F     Userspace  function  pointers  point  to  descriptors  (turns on
34              FDPIC_FUNCPTRS).
35
36       -I     Turns on SHORT_INODE.
37
38       -L     Changes the way  virtual  memory  is  allocated  (turns  on  the
39              ADDR_COMPAT_LAYOUT).
40
41       -R     Disables  randomization  of  the virtual address space (turns on
42              ADDR_NO_RANDOMIZE).
43
44       -S     Turns on WHOLE_SECONDS.
45
46       -T     Turns on STICKY_TIMEOUTS.
47
48       -X     Turns on READ_IMPLIES_EXEC.
49
50       -Z     Turns on MMAP_PAGE_ZERO.
51

EXAMPLES

53       setarch ppc32 rpmbuild --target=ppc --rebuild foo.src.rpm
54       setarch ppc32 -v -vL3 rpmbuild --target=ppc --rebuild bar.src.rpm
55

AUTHOR

57       Elliot Lee <sopwith@redhat.com>
58       Jindrich Novy <jnovy@redhat.com>
59

BUGS

61       Report bugs via http://bugzilla.redhat.com/bugzilla/
62
63
64
65setarch                            Oct 2004                         SETARCH(8)