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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc32: Fix thinko in previous change.
  sparc: Align clone and signal stacks to 16 bytes.
This commit is contained in:
Linus Torvalds 2010-02-11 14:00:27 -08:00
commit f2d6cff7f5
5 changed files with 20 additions and 14 deletions
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2
arch/sparc/kernel/process_32.c
View File

@ -526,7 +526,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
* Set some valid stack frames to give to the child.
*/
childstack = (struct sparc_stackf __user *)
(sp & ~0x7UL);
(sp & ~0xfUL);
parentstack = (struct sparc_stackf __user *)
regs->u_regs[UREG_FP];

8
arch/sparc/kernel/process_64.c
View File

@ -398,11 +398,11 @@ static unsigned long clone_stackframe(unsigned long csp, unsigned long psp)
} else
__get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6]));
/* Now 8-byte align the stack as this is mandatory in the
* Sparc ABI due to how register windows work. This hides
* the restriction from thread libraries etc. -DaveM
/* Now align the stack as this is mandatory in the Sparc ABI
* due to how register windows work. This hides the
* restriction from thread libraries etc.
*/
csp &= ~7UL;
csp &= ~15UL;
distance = fp - psp;
rval = (csp - distance);

10
arch/sparc/kernel/signal32.c
View File

@ -120,8 +120,8 @@ struct rt_signal_frame32 {
};
/* Align macros */
#define SF_ALIGNEDSZ (((sizeof(struct signal_frame32) + 7) & (~7)))
#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 7) & (~7)))
#define SF_ALIGNEDSZ (((sizeof(struct signal_frame32) + 15) & (~15)))
#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 15) & (~15)))
int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{
@ -420,15 +420,17 @@ static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, uns
sp = current->sas_ss_sp + current->sas_ss_size;
}
sp -= framesize;
/* Always align the stack frame. This handles two cases. First,
* sigaltstack need not be mindful of platform specific stack
* alignment. Second, if we took this signal because the stack
* is not aligned properly, we'd like to take the signal cleanly
* and report that.
*/
sp &= ~7UL;
sp &= ~15UL;
return (void __user *)(sp - framesize);
return (void __user *) sp;
}
static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)

6
arch/sparc/kernel/signal_32.c
View File

@ -267,15 +267,17 @@ static inline void __user *get_sigframe(struct sigaction *sa, struct pt_regs *re
sp = current->sas_ss_sp + current->sas_ss_size;
}
sp -= framesize;
/* Always align the stack frame. This handles two cases. First,
* sigaltstack need not be mindful of platform specific stack
* alignment. Second, if we took this signal because the stack
* is not aligned properly, we'd like to take the signal cleanly
* and report that.
*/
sp &= ~7UL;
sp &= ~15UL;
return (void __user *)(sp - framesize);
return (void __user *) sp;
}
static inline int

8
arch/sparc/kernel/signal_64.c
View File

@ -353,7 +353,7 @@ segv:
/* Checks if the fp is valid */
static int invalid_frame_pointer(void __user *fp, int fplen)
{
if (((unsigned long) fp) & 7)
if (((unsigned long) fp) & 15)
return 1;
return 0;
}
@ -396,15 +396,17 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *
sp = current->sas_ss_sp + current->sas_ss_size;
}
sp -= framesize;
/* Always align the stack frame. This handles two cases. First,
* sigaltstack need not be mindful of platform specific stack
* alignment. Second, if we took this signal because the stack
* is not aligned properly, we'd like to take the signal cleanly
* and report that.
*/
sp &= ~7UL;
sp &= ~15UL;
return (void __user *)(sp - framesize);
return (void __user *) sp;
}
static inline void