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Kirill Smelkov
linux
Commits
51d8b7a3
Commit
51d8b7a3
authored
22 years ago
by
David Mosberger
Browse files
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Plain Diff
ia64: Preserve f11-f15 around calls into firmware. Patch by John Marvin.
parent
d73794d6
Changes
4
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4 changed files
with
88 additions
and
6 deletions
+88
-6
arch/ia64/kernel/ia64_ksyms.c
arch/ia64/kernel/ia64_ksyms.c
+2
-0
arch/ia64/kernel/pal.S
arch/ia64/kernel/pal.S
+45
-0
include/asm-ia64/pal.h
include/asm-ia64/pal.h
+38
-6
include/asm-ia64/sal.h
include/asm-ia64/sal.h
+3
-0
No files found.
arch/ia64/kernel/ia64_ksyms.c
View file @
51d8b7a3
...
...
@@ -127,6 +127,8 @@ EXPORT_SYMBOL(ia64_pal_call_phys_stacked);
EXPORT_SYMBOL
(
ia64_pal_call_phys_static
);
EXPORT_SYMBOL
(
ia64_pal_call_stacked
);
EXPORT_SYMBOL
(
ia64_pal_call_static
);
EXPORT_SYMBOL
(
ia64_load_scratch_fpregs
);
EXPORT_SYMBOL
(
ia64_save_scratch_fpregs
);
extern
struct
efi
efi
;
EXPORT_SYMBOL
(
efi
);
...
...
This diff is collapsed.
Click to expand it.
arch/ia64/kernel/pal.S
View file @
51d8b7a3
...
...
@@ -245,3 +245,48 @@ GLOBAL_ENTRY(ia64_pal_call_phys_stacked)
br.ret.sptk.many
b0
END
(
ia64_pal_call_phys_stacked
)
/*
*
Save
scratch
fp
scratch
regs
which
aren
't saved in pt_regs already (fp10-fp15).
*
*
NOTE
:
We
need
to
do
this
since
firmware
(
SAL
and
PAL
)
may
use
any
of
the
scratch
*
regs
fp
-
low
partition
.
*
*
Inputs
:
*
in0
Address
of
stack
storage
for
fp
regs
*/
GLOBAL_ENTRY
(
ia64_save_scratch_fpregs
)
alloc
r3
=
ar
.
pfs
,
1
,
0
,
0
,
0
add
r2
=
16
,
in0
;;
stf.spill
[
in0
]
=
f10
,
32
stf.spill
[
r2
]
=
f11
,
32
;;
stf.spill
[
in0
]
=
f12
,
32
stf.spill
[
r2
]
=
f13
,
32
;;
stf.spill
[
in0
]
=
f14
,
32
stf.spill
[
r2
]
=
f15
,
32
br.ret.sptk.many
rp
END
(
ia64_save_scratch_fpregs
)
/*
*
Load
scratch
fp
scratch
regs
(
fp10
-
fp15
)
*
*
Inputs
:
*
in0
Address
of
stack
storage
for
fp
regs
*/
GLOBAL_ENTRY
(
ia64_load_scratch_fpregs
)
alloc
r3
=
ar
.
pfs
,
1
,
0
,
0
,
0
add
r2
=
16
,
in0
;;
ldf.fill
f10
=
[
in0
],
32
ldf.fill
f11
=
[
r2
],
32
;;
ldf.fill
f12
=
[
in0
],
32
ldf.fill
f13
=
[
r2
],
32
;;
ldf.fill
f14
=
[
in0
],
32
ldf.fill
f15
=
[
r2
],
32
br.ret.sptk.many
rp
END
(
ia64_load_scratch_fpregs
)
This diff is collapsed.
Click to expand it.
include/asm-ia64/pal.h
View file @
51d8b7a3
...
...
@@ -78,6 +78,7 @@
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <asm/fpu.h>
/*
* Data types needed to pass information into PAL procedures and
...
...
@@ -649,12 +650,43 @@ extern struct ia64_pal_retval ia64_pal_call_static (u64, u64, u64, u64, u64);
extern
struct
ia64_pal_retval
ia64_pal_call_stacked
(
u64
,
u64
,
u64
,
u64
);
extern
struct
ia64_pal_retval
ia64_pal_call_phys_static
(
u64
,
u64
,
u64
,
u64
);
extern
struct
ia64_pal_retval
ia64_pal_call_phys_stacked
(
u64
,
u64
,
u64
,
u64
);
#define PAL_CALL(iprv,a0,a1,a2,a3) iprv = ia64_pal_call_static(a0, a1, a2, a3, 0)
#define PAL_CALL_IC_OFF(iprv,a0,a1,a2,a3) iprv = ia64_pal_call_static(a0, a1, a2, a3, 1)
#define PAL_CALL_STK(iprv,a0,a1,a2,a3) iprv = ia64_pal_call_stacked(a0, a1, a2, a3)
#define PAL_CALL_PHYS(iprv,a0,a1,a2,a3) iprv = ia64_pal_call_phys_static(a0, a1, a2, a3)
#define PAL_CALL_PHYS_STK(iprv,a0,a1,a2,a3) iprv = ia64_pal_call_phys_stacked(a0, a1, a2, a3)
extern
void
ia64_save_scratch_fpregs
(
struct
ia64_fpreg
*
);
extern
void
ia64_load_scratch_fpregs
(
struct
ia64_fpreg
*
);
#define PAL_CALL(iprv,a0,a1,a2,a3) do { \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
iprv = ia64_pal_call_static(a0, a1, a2, a3, 0); \
ia64_load_scratch_fpregs(fr); \
} while (0)
#define PAL_CALL_IC_OFF(iprv,a0,a1,a2,a3) do { \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
iprv = ia64_pal_call_static(a0, a1, a2, a3, 1); \
ia64_load_scratch_fpregs(fr); \
} while (0)
#define PAL_CALL_STK(iprv,a0,a1,a2,a3) do { \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
iprv = ia64_pal_call_stacked(a0, a1, a2, a3); \
ia64_load_scratch_fpregs(fr); \
} while (0)
#define PAL_CALL_PHYS(iprv,a0,a1,a2,a3) do { \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
iprv = ia64_pal_call_phys_static(a0, a1, a2, a3); \
ia64_load_scratch_fpregs(fr); \
} while (0)
#define PAL_CALL_PHYS_STK(iprv,a0,a1,a2,a3) do { \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
iprv = ia64_pal_call_phys_stacked(a0, a1, a2, a3); \
ia64_load_scratch_fpregs(fr); \
} while (0)
typedef
int
(
*
ia64_pal_handler
)
(
u64
,
...);
extern
ia64_pal_handler
ia64_pal
;
...
...
This diff is collapsed.
Click to expand it.
include/asm-ia64/sal.h
View file @
51d8b7a3
...
...
@@ -38,9 +38,12 @@ extern spinlock_t sal_lock;
# define SAL_CALL(result,args...) do { \
unsigned long flags; \
struct ia64_fpreg fr[6]; \
ia64_save_scratch_fpregs(fr); \
spin_lock_irqsave(&sal_lock, flags); \
__SAL_CALL(result,args); \
spin_unlock_irqrestore(&sal_lock, flags); \
ia64_load_scratch_fpregs(fr); \
} while (0)
#define SAL_SET_VECTORS 0x01000000
...
...
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Click to expand it.
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