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authorIngo Molnar <mingo@elte.hu>2009-03-04 05:42:31 -0500
committerIngo Molnar <mingo@elte.hu>2009-03-04 05:42:31 -0500
commit8163d88c79dca35478a2405c837733ac50ea4c39 (patch)
tree6acae066a09b7dcbedab4a35ad62eba4ba3fd83c /arch/powerpc/kernel/align.c
parenta1ef58f442542d8b3e3b963339fbc522c36e827c (diff)
parentfec6c6fec3e20637bee5d276fb61dd8b49a3f9cc (diff)
Merge commit 'v2.6.29-rc7' into perfcounters/core
Conflicts: arch/x86/mm/iomap_32.c
Diffstat (limited to 'arch/powerpc/kernel/align.c')
-rw-r--r--arch/powerpc/kernel/align.c29
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index ada06924a423..73cb6a3229ae 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -367,27 +367,24 @@ static int emulate_multiple(struct pt_regs *regs, unsigned char __user *addr,
367static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg, 367static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
368 unsigned int flags) 368 unsigned int flags)
369{ 369{
370 char *ptr = (char *) &current->thread.TS_FPR(reg); 370 char *ptr0 = (char *) &current->thread.TS_FPR(reg);
371 int i, ret; 371 char *ptr1 = (char *) &current->thread.TS_FPR(reg+1);
372 int i, ret, sw = 0;
372 373
373 if (!(flags & F)) 374 if (!(flags & F))
374 return 0; 375 return 0;
375 if (reg & 1) 376 if (reg & 1)
376 return 0; /* invalid form: FRS/FRT must be even */ 377 return 0; /* invalid form: FRS/FRT must be even */
377 if (!(flags & SW)) { 378 if (flags & SW)
378 /* not byte-swapped - easy */ 379 sw = 7;
379 if (!(flags & ST)) 380 ret = 0;
380 ret = __copy_from_user(ptr, addr, 16); 381 for (i = 0; i < 8; ++i) {
381 else 382 if (!(flags & ST)) {
382 ret = __copy_to_user(addr, ptr, 16); 383 ret |= __get_user(ptr0[i^sw], addr + i);
383 } else { 384 ret |= __get_user(ptr1[i^sw], addr + i + 8);
384 /* each FPR value is byte-swapped separately */ 385 } else {
385 ret = 0; 386 ret |= __put_user(ptr0[i^sw], addr + i);
386 for (i = 0; i < 16; ++i) { 387 ret |= __put_user(ptr1[i^sw], addr + i + 8);
387 if (!(flags & ST))
388 ret |= __get_user(ptr[i^7], addr + i);
389 else
390 ret |= __put_user(ptr[i^7], addr + i);
391 } 388 }
392 } 389 }
393 if (ret) 390 if (ret)