summaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/processor.h
diff options
context:
space:
mode:
authorPaul Mackerras <paulus@samba.org>2006-06-07 08:15:39 +0200
committerPaul Mackerras <paulus@samba.org>2006-06-09 13:24:16 +0200
commite9370ae15dc2f8ba1e1889ce26f13cda565b6ecb (patch)
tree338ed732f7a6607bc168795008e244f180876cda /include/asm-powerpc/processor.h
parent[PATCH] powerpc: Implement support for setting little-endian mode via prctl (diff)
downloadlinux-e9370ae15dc2f8ba1e1889ce26f13cda565b6ecb.tar.xz
linux-e9370ae15dc2f8ba1e1889ce26f13cda565b6ecb.zip
[PATCH] powerpc: Implement PR_[GS]ET_UNALIGN prctls for powerpc
This gives the ability to control whether alignment exceptions get fixed up or reported to the process as a SIGBUS, using the existing PR_SET_UNALIGN and PR_GET_UNALIGN prctls. We do not implement the option of logging a message on alignment exceptions. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/processor.h')
-rw-r--r--include/asm-powerpc/processor.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
index fa6163268153..d2c2c95f913b 100644
--- a/include/asm-powerpc/processor.h
+++ b/include/asm-powerpc/processor.h
@@ -149,6 +149,7 @@ struct thread_struct {
unsigned int val; /* Floating point status */
} fpscr;
int fpexc_mode; /* floating-point exception mode */
+ unsigned int align_ctl; /* alignment handling control */
#ifdef CONFIG_PPC64
unsigned long start_tb; /* Start purr when proc switched in */
unsigned long accum_tb; /* Total accumilated purr for process */
@@ -217,6 +218,12 @@ extern int set_fpexc_mode(struct task_struct *tsk, unsigned int val);
extern int get_endian(struct task_struct *tsk, unsigned long adr);
extern int set_endian(struct task_struct *tsk, unsigned int val);
+#define GET_UNALIGN_CTL(tsk, adr) get_unalign_ctl((tsk), (adr))
+#define SET_UNALIGN_CTL(tsk, val) set_unalign_ctl((tsk), (val))
+
+extern int get_unalign_ctl(struct task_struct *tsk, unsigned long adr);
+extern int set_unalign_ctl(struct task_struct *tsk, unsigned int val);
+
static inline unsigned int __unpack_fe01(unsigned long msr_bits)
{
return ((msr_bits & MSR_FE0) >> 10) | ((msr_bits & MSR_FE1) >> 8);