diff options
| author | Bobby Bingham <koorogi@koorogi.info> | 2014-04-03 14:46:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-03 16:20:52 -0700 |
| commit | a3c195144e162097c42e4284323ed6d386de105d (patch) | |
| tree | beae07ac4a12e2bee76f3160a8f4b5725f8a00ad /arch/sh/include | |
| parent | 7caf62de25554da3af00c92c11afa95dcc3592c4 (diff) | |
sh: don't pass saved userspace state to exception handlers
The compiler is permitted to generate code which overwrites the
parameters to a function. If those parameters include the only saved
copy we have of userspace's registers, we're in trouble.
Signed-off-by: Bobby Bingham <koorogi@koorogi.info>
Cc: Paul Mundt <paul.mundt@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/traps_32.h | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/arch/sh/include/asm/traps_32.h b/arch/sh/include/asm/traps_32.h index cfd55ff9dff..17e129fe459 100644 --- a/arch/sh/include/asm/traps_32.h +++ b/arch/sh/include/asm/traps_32.h @@ -42,18 +42,10 @@ static inline void trigger_address_error(void) asmlinkage void do_address_error(struct pt_regs *regs, unsigned long writeaccess, unsigned long address); -asmlinkage void do_divide_error(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); -asmlinkage void do_reserved_inst(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); -asmlinkage void do_illegal_slot_inst(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); -asmlinkage void do_exception_error(unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7, - struct pt_regs __regs); +asmlinkage void do_divide_error(unsigned long r4); +asmlinkage void do_reserved_inst(void); +asmlinkage void do_illegal_slot_inst(void); +asmlinkage void do_exception_error(void); #define BUILD_TRAP_HANDLER(name) \ asmlinkage void name##_trap_handler(unsigned long r4, unsigned long r5, \ |