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| author | Anton Blanchard <anton@samba.org> | 2013-09-23 04:04:46 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 07:48:35 +0200 |
| commit | f626190d27a8525fbb6e3a72831e177c092f8a44 (patch) | |
| tree | 44d18cad1646a37bb031e676db8bb854c5a6fe07 /arch/powerpc/kernel/align.c | |
| parent | powerpc: Endian safe trampoline (diff) | |
| download | linux-f626190d27a8525fbb6e3a72831e177c092f8a44.tar.xz linux-f626190d27a8525fbb6e3a72831e177c092f8a44.zip | |
powerpc: Remove open coded byte swap macro in alignment handler
Use swab64/32/16 instead of open coding it.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/align.c')
| -rw-r--r-- | arch/powerpc/kernel/align.c | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c index a27ccd5dc6b9..af830dfe98b5 100644 --- a/arch/powerpc/kernel/align.c +++ b/arch/powerpc/kernel/align.c @@ -54,8 +54,6 @@ struct aligninfo { /* DSISR bits reported for a DCBZ instruction: */ #define DCBZ 0x5f /* 8xx/82xx dcbz faults when cache not enabled */ -#define SWAP(a, b) (t = (a), (a) = (b), (b) = t) - /* * The PowerPC stores certain bits of the instruction that caused the * alignment exception in the DSISR register. This array maps those @@ -458,7 +456,7 @@ static struct aligninfo spe_aligninfo[32] = { static int emulate_spe(struct pt_regs *regs, unsigned int reg, unsigned int instr) { - int t, ret; + int ret; union { u64 ll; u32 w[2]; @@ -581,24 +579,18 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg, if (flags & SW) { switch (flags & 0xf0) { case E8: - SWAP(data.v[0], data.v[7]); - SWAP(data.v[1], data.v[6]); - SWAP(data.v[2], data.v[5]); - SWAP(data.v[3], data.v[4]); + data.ll = swab64(data.ll); break; case E4: - - SWAP(data.v[0], data.v[3]); - SWAP(data.v[1], data.v[2]); - SWAP(data.v[4], data.v[7]); - SWAP(data.v[5], data.v[6]); + data.w[0] = swab32(data.w[0]); + data.w[1] = swab32(data.w[1]); break; /* Its half word endian */ default: - SWAP(data.v[0], data.v[1]); - SWAP(data.v[2], data.v[3]); - SWAP(data.v[4], data.v[5]); - SWAP(data.v[6], data.v[7]); + data.h[0] = swab16(data.h[0]); + data.h[1] = swab16(data.h[1]); + data.h[2] = swab16(data.h[2]); + data.h[3] = swab16(data.h[3]); break; } } @@ -710,7 +702,7 @@ int fix_alignment(struct pt_regs *regs) unsigned int dsisr; unsigned char __user *addr; unsigned long p, swiz; - int ret, t; + int ret; union { u64 ll; double dd; @@ -915,17 +907,13 @@ int fix_alignment(struct pt_regs *regs) if (flags & SW) { switch (nb) { case 8: - SWAP(data.v[0], data.v[7]); - SWAP(data.v[1], data.v[6]); - SWAP(data.v[2], data.v[5]); - SWAP(data.v[3], data.v[4]); + data.ll = swab64(data.ll); break; case 4: - SWAP(data.v[4], data.v[7]); - SWAP(data.v[5], data.v[6]); + data.x32.low32 = swab32(data.x32.low32); break; case 2: - SWAP(data.v[6], data.v[7]); + data.x16.low16 = swab16(data.x16.low16); break; } } |