diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2012-03-29 13:30:31 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2012-05-25 12:48:22 -0400 |
| commit | 1efea40d4172a2a475ccb29b59d6221e9d0c174b (patch) | |
| tree | 8152b61bb3fa83eb3403bca5cb05731c1063e999 /arch/tile/lib/strchr_64.c | |
| parent | 73636b1aacb1a07e6fbe0d25e560e69b024a8e25 (diff) | |
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/lib/strchr_64.c')
| -rw-r--r-- | arch/tile/lib/strchr_64.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/arch/tile/lib/strchr_64.c b/arch/tile/lib/strchr_64.c index 617a9273aaa8..f39f9dc422b0 100644 --- a/arch/tile/lib/strchr_64.c +++ b/arch/tile/lib/strchr_64.c @@ -15,8 +15,7 @@ #include <linux/types.h> #include <linux/string.h> #include <linux/module.h> - -#undef strchr +#include "string-endian.h" char *strchr(const char *s, int c) { @@ -33,13 +32,9 @@ char *strchr(const char *s, int c) * match neither zero nor goal (we make sure the high bit of each * byte is 1, and the low 7 bits are all the opposite of the goal * byte). - * - * Note that this shift count expression works because we know shift - * counts are taken mod 64. */ - const uint64_t before_mask = (1ULL << (s_int << 3)) - 1; - uint64_t v = (*p | before_mask) ^ - (goal & __insn_v1shrsi(before_mask, 1)); + const uint64_t before_mask = MASK(s_int); + uint64_t v = (*p | before_mask) ^ (goal & __insn_v1shrui(before_mask, 1)); uint64_t zero_matches, goal_matches; while (1) { @@ -55,8 +50,8 @@ char *strchr(const char *s, int c) v = *++p; } - z = __insn_ctz(zero_matches); - g = __insn_ctz(goal_matches); + z = CFZ(zero_matches); + g = CFZ(goal_matches); /* If we found c before '\0' we got a match. Note that if c == '\0' * then g == z, and we correctly return the address of the '\0' |