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arch/tile: support building big-endian kernel

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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 <[email protected]>
This commit is contained in:
Chris Metcalf committed 2012-05-25 12:48:22 -04:00
1 parent 73636b1aac
commit 1efea40d41
10 files changed
+130 -29
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arch/tile/kernel/single_step.c
+12 -4
View File
@@ -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) {