diff options
author | David S. Miller <davem@davemloft.net> | 2009-03-01 21:35:16 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2009-03-01 21:35:16 -0800 |
commit | aa4abc9bcce0d2a7ec189e897f8f8c58ca04643b (patch) | |
tree | 22ef88d84a2e06380bb6a853c3ba28657e4e5f92 /arch/powerpc/kernel/align.c | |
parent | 814c01dc7c533033b4e99981a2e24a6195bfb43c (diff) | |
parent | 52c0326beaa3cb0049d0f1c51c6ad5d4a04e4430 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-tx.c
net/8021q/vlan_core.c
net/core/dev.c
Diffstat (limited to 'arch/powerpc/kernel/align.c')
-rw-r--r-- | arch/powerpc/kernel/align.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c index ada06924a42..73cb6a3229a 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, static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg, unsigned int flags) { - char *ptr = (char *) ¤t->thread.TS_FPR(reg); - int i, ret; + char *ptr0 = (char *) ¤t->thread.TS_FPR(reg); + char *ptr1 = (char *) ¤t->thread.TS_FPR(reg+1); + int i, ret, sw = 0; if (!(flags & F)) return 0; if (reg & 1) return 0; /* invalid form: FRS/FRT must be even */ - if (!(flags & SW)) { - /* not byte-swapped - easy */ - if (!(flags & ST)) - ret = __copy_from_user(ptr, addr, 16); - else - ret = __copy_to_user(addr, ptr, 16); - } else { - /* each FPR value is byte-swapped separately */ - ret = 0; - for (i = 0; i < 16; ++i) { - if (!(flags & ST)) - ret |= __get_user(ptr[i^7], addr + i); - else - ret |= __put_user(ptr[i^7], addr + i); + if (flags & SW) + sw = 7; + ret = 0; + for (i = 0; i < 8; ++i) { + if (!(flags & ST)) { + ret |= __get_user(ptr0[i^sw], addr + i); + ret |= __get_user(ptr1[i^sw], addr + i + 8); + } else { + ret |= __put_user(ptr0[i^sw], addr + i); + ret |= __put_user(ptr1[i^sw], addr + i + 8); } } if (ret) |