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addrs.c
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addrs.c revision d2a70789f056fc6c9ce3ab047b52126d80b0e3da
#
include
<
sys
/
mman.h
>
#
include
<
stdlib.h
>
#
include
<
unistd.h
>
#
include
<
err.h
>
int
main
(
int
argc
,
char
**
argv
)
{
int
stack
= 0;
void
*
heap
=
NULL
;
void
*
mapping
=
NULL
;
if
((
heap
=
malloc
(
10
)) ==
NULL
)
err
(
1
,
"couldn't allocate"
);
if
((
mapping
=
mmap
((
caddr_t
)0,
10
, (
PROT_READ
|
PROT_WRITE
),
MAP_ANON
|
MAP_PRIVATE
, -
1
, 0)) == (
void
*)-
1
)
err
(
1
,
"couldn't map"
);
printf
(
" stack: 0x%p\n"
, &
stack
);
printf
(
" heap: 0x%p\n"
,
heap
);
printf
(
"mapping: 0x%p\n"
,
mapping
);
printf
(
" text: 0x%p\n"
, &
main
);
return
(0);
}