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| author | Chris Metcalf | 2012-03-29 19:30:31 +0200 |
|---|---|---|
| committer | Chris Metcalf | 2012-05-25 18:48:22 +0200 |
| commit | 1efea40d4172a2a475ccb29b59d6221e9d0c174b (patch) | |
| tree | 8152b61bb3fa83eb3403bca5cb05731c1063e999 /arch/tile/kernel/single_step.c | |
| parent | arch/tile: allow building Linux with transparent huge pages enabled (diff) | |
| download | kernel-qcow2-linux-1efea40d4172a2a475ccb29b59d6221e9d0c174b.tar.gz kernel-qcow2-linux-1efea40d4172a2a475ccb29b59d6221e9d0c174b.tar.xz kernel-qcow2-linux-1efea40d4172a2a475ccb29b59d6221e9d0c174b.zip | |
arch/tile: support building big-endian kernel
The toolchain supports big-endian mode now, so add support for building
the kernel to run big-endian as well.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel/single_step.c')
| -rw-r--r-- | arch/tile/kernel/single_step.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/tile/kernel/single_step.c b/arch/tile/kernel/single_step.c index 89529c9f0605..27742e87e255 100644 --- a/arch/tile/kernel/single_step.c +++ b/arch/tile/kernel/single_step.c @@ -172,9 +172,6 @@ static tile_bundle_bits rewrite_load_store_unaligned( return (tilepro_bundle_bits) 0; } -#ifndef __LITTLE_ENDIAN -# error We assume little-endian representation with copy_xx_user size 2 here -#endif /* Handle unaligned load/store */ if (mem_op == MEMOP_LOAD || mem_op == MEMOP_LOAD_POSTINCR) { unsigned short val_16; @@ -195,8 +192,19 @@ static tile_bundle_bits rewrite_load_store_unaligned( state->update = 1; } } else { + unsigned short val_16; val = (val_reg == TREG_ZERO) ? 0 : regs->regs[val_reg]; - err = copy_to_user(addr, &val, size); + switch (size) { + case 2: + val_16 = val; + err = copy_to_user(addr, &val_16, sizeof(val_16)); + break; + case 4: + err = copy_to_user(addr, &val, sizeof(val)); + break; + default: + BUG(); + } } if (err) { |