diff options
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 1e50a7840e..177ed076c7 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -5559,28 +5559,15 @@ int arm_rmode_to_sf(int rmode) return rmode; } -static void crc_init_buffer(uint8_t *buf, uint32_t val, uint32_t bytes) -{ - memset(buf, 0, 4); - - if (bytes == 1) { - buf[0] = val & 0xff; - } else if (bytes == 2) { - buf[0] = val & 0xff; - buf[1] = (val >> 8) & 0xff; - } else { - buf[0] = val & 0xff; - buf[1] = (val >> 8) & 0xff; - buf[2] = (val >> 16) & 0xff; - buf[3] = (val >> 24) & 0xff; - } -} - +/* CRC helpers. + * The upper bytes of val (above the number specified by 'bytes') must have + * been zeroed out by the caller. + */ uint32_t HELPER(crc32)(uint32_t acc, uint32_t val, uint32_t bytes) { uint8_t buf[4]; - crc_init_buffer(buf, val, bytes); + stl_le_p(buf, val); /* zlib crc32 converts the accumulator and output to one's complement. */ return crc32(acc ^ 0xffffffff, buf, bytes) ^ 0xffffffff; @@ -5590,7 +5577,7 @@ uint32_t HELPER(crc32c)(uint32_t acc, uint32_t val, uint32_t bytes) { uint8_t buf[4]; - crc_init_buffer(buf, val, bytes); + stl_le_p(buf, val); /* Linux crc32c converts the output to one's complement. */ return crc32c(acc, buf, bytes) ^ 0xffffffff; |