diff options
| author |   Kyle McMartin <kyle@parisc-linux.org> | 2005-10-21 22:43:15 -0400 |
|---|---|---|
| committer | Kyle McMartin <kyle@parisc-linux.org> | 2005-10-21 22:43:15 -0400 |
| commit | f053725b8985d10c2cc4b837a80a381104c936a4 (patch) | |
| tree | b9539783ec2f608638dd0d92c2c56d49eb19d93e /include/asm-parisc | |
| parent | [PARISC] Replace some calls to bl with b,l or bv to use longer offsets (diff) | |
| download | linux-dev-f053725b8985d10c2cc4b837a80a381104c936a4.tar.xz linux-dev-f053725b8985d10c2cc4b837a80a381104c936a4.zip | |
[PARISC] Add ability for prctl to change unaligned trap behaviour
Add support for changing unaligned trap behaviour on a
per-thread basis.
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'include/asm-parisc')
| -rw-r--r-- | include/asm-parisc/processor.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-parisc/processor.h b/include/asm-parisc/processor.h index a9dfadd05658..aae40e8c3aa8 100644 --- a/include/asm-parisc/processor.h +++ b/include/asm-parisc/processor.h @@ -122,8 +122,27 @@ struct thread_struct { }; /* Thread struct flags. */ +#define PARISC_UAC_NOPRINT (1UL << 0) /* see prctl and unaligned.c */ +#define PARISC_UAC_SIGBUS (1UL << 1) #define PARISC_KERNEL_DEATH (1UL << 31) /* see die_if_kernel()... */ +#define PARISC_UAC_SHIFT 0 +#define PARISC_UAC_MASK (PARISC_UAC_NOPRINT|PARISC_UAC_SIGBUS) + +#define SET_UNALIGN_CTL(task,value) \ + ({ \ + (task)->thread.flags = (((task)->thread.flags & ~PARISC_UAC_MASK) \ + | (((value) << PARISC_UAC_SHIFT) & \ + PARISC_UAC_MASK)); \ + 0; \ + }) + +#define GET_UNALIGN_CTL(task,addr) \ + ({ \ + put_user(((task)->thread.flags & PARISC_UAC_MASK) \ + >> PARISC_UAC_SHIFT, (int __user *) (addr)); \ + }) + #define INIT_THREAD { \ regs: { gr: { 0, }, \ fr: { 0, }, \ |