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linux
linux-davinci
Commits
cf52c468
Commit
cf52c468
authored
Aug 30, 2009
by
Chen Liqin
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Plain Diff
score: add old syscall support
parent
324f40fb
Changes
3
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3 changed files
with
40 additions
and
2 deletions
+40
-2
arch/score/include/asm/unistd.h
arch/score/include/asm/unistd.h
+5
-0
arch/score/kernel/entry.S
arch/score/kernel/entry.S
+13
-0
arch/score/kernel/sys_score.c
arch/score/kernel/sys_score.c
+22
-2
No files found.
arch/score/include/asm/unistd.h
View file @
cf52c468
...
...
@@ -3,6 +3,11 @@
#define __ARCH_HAVE_MMU
#define __ARCH_WANT_SYSCALL_NO_AT
#define __ARCH_WANT_SYSCALL_NO_FLAGS
#define __ARCH_WANT_SYSCALL_OFF_T
#define __ARCH_WANT_SYSCALL_DEPRECATED
#include <asm-generic/unistd.h>
#endif
/* _ASM_SCORE_UNISTD_H */
arch/score/kernel/entry.S
View file @
cf52c468
...
...
@@ -499,3 +499,16 @@ ENTRY(sys_sigaltstack)
mv
r4
,
r0
la
r8
,
score_sigaltstack
br
r8
#ifdef __ARCH_WANT_SYSCALL_DEPRECATED
ENTRY
(
sys_fork
)
mv
r4
,
r0
la
r8
,
score_fork
br
r8
ENTRY
(
sys_vfork
)
mv
r4
,
r0
la
r8
,
score_vfork
br
r8
#endif /* __ARCH_WANT_SYSCALL_DEPRECATED */
arch/score/kernel/sys_score.c
View file @
cf52c468
...
...
@@ -25,6 +25,7 @@
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/module.h>
#include <linux/unistd.h>
...
...
@@ -49,8 +50,7 @@ sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
}
down_write
(
&
current
->
mm
->
mmap_sem
);
error
=
do_mmap_pgoff
(
file
,
addr
,
len
,
prot
,
flags
,
pgoff
>>
(
PAGE_SHIFT
-
12
));
error
=
do_mmap_pgoff
(
file
,
addr
,
len
,
prot
,
flags
,
pgoff
);
up_write
(
&
current
->
mm
->
mmap_sem
);
if
(
file
)
...
...
@@ -59,6 +59,19 @@ sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
return
error
;
}
asmlinkage
long
sys_mmap
(
unsigned
long
addr
,
unsigned
long
len
,
unsigned
long
prot
,
unsigned
long
flags
,
unsigned
long
fd
,
off_t
pgoff
)
{
return
sys_mmap2
(
addr
,
len
,
prot
,
flags
,
fd
,
pgoff
>>
PAGE_SHIFT
);
}
asmlinkage
long
score_fork
(
struct
pt_regs
*
regs
)
{
return
do_fork
(
SIGCHLD
,
regs
->
regs
[
0
],
regs
,
0
,
NULL
,
NULL
);
}
/*
* Clone a task - this clones the calling program thread.
* This is called indirectly via a small wrapper
...
...
@@ -81,6 +94,13 @@ score_clone(struct pt_regs *regs)
parent_tidptr
,
child_tidptr
);
}
asmlinkage
long
score_vfork
(
struct
pt_regs
*
regs
)
{
return
do_fork
(
CLONE_VFORK
|
CLONE_VM
|
SIGCHLD
,
regs
->
regs
[
0
],
regs
,
0
,
NULL
,
NULL
);
}
/*
* sys_execve() executes a new program.
* This is called indirectly via a small wrapper
...
...
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