diff options
| author | Richard Henderson <rth@twiddle.net> | 2015-09-23 10:12:16 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2015-10-07 20:03:14 +1100 |
| commit | ba1fc78f65fdea9d4b14d6449514c1351ad64fa4 (patch) | |
| tree | 427dcb7fc140e7367d8f88d07cd5da58f61dde68 /target-tilegx | |
| parent | 38c949ffe7497b1d833bca5f70b22c87df9bd567 (diff) | |
target-tilegx: Implement crc instructions
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tilegx')
| -rw-r--r-- | target-tilegx/helper.c | 19 | ||||
| -rw-r--r-- | target-tilegx/helper.h | 2 | ||||
| -rw-r--r-- | target-tilegx/translate.c | 8 |
3 files changed, 28 insertions, 1 deletions
diff --git a/target-tilegx/helper.c b/target-tilegx/helper.c index a01bb8d513..cad5daeaae 100644 --- a/target-tilegx/helper.c +++ b/target-tilegx/helper.c @@ -21,6 +21,7 @@ #include "cpu.h" #include "qemu-common.h" #include "exec/helper-proto.h" +#include <zlib.h> /* For crc32 */ void helper_exception(CPUTLGState *env, uint32_t excp) { @@ -78,3 +79,21 @@ uint64_t helper_shufflebytes(uint64_t dest, uint64_t srca, uint64_t srcb) return vdst; } + +uint64_t helper_crc32_8(uint64_t accum, uint64_t input) +{ + uint8_t buf = input; + + /* zlib crc32 converts the accumulator and output to one's complement. */ + return crc32(accum ^ 0xffffffff, &buf, 1) ^ 0xffffffff; +} + +uint64_t helper_crc32_32(uint64_t accum, uint64_t input) +{ + uint8_t buf[4]; + + stl_le_p(buf, input); + + /* zlib crc32 converts the accumulator and output to one's complement. */ + return crc32(accum ^ 0xffffffff, buf, 4) ^ 0xffffffff; +} diff --git a/target-tilegx/helper.h b/target-tilegx/helper.h index d380d3ba59..72c8e9297c 100644 --- a/target-tilegx/helper.h +++ b/target-tilegx/helper.h @@ -4,6 +4,8 @@ DEF_HELPER_FLAGS_1(cnttz, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_1(pcnt, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_1(revbits, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_3(shufflebytes, TCG_CALL_NO_RWG_SE, i64, i64, i64, i64) +DEF_HELPER_FLAGS_2(crc32_8, TCG_CALL_NO_RWG_SE, i64, i64, i64) +DEF_HELPER_FLAGS_2(crc32_32, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v1multu, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v1shl, TCG_CALL_NO_RWG_SE, i64, i64, i64) diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c index 6bfb1af2c8..3e5a8ea049 100644 --- a/target-tilegx/translate.c +++ b/target-tilegx/translate.c @@ -750,9 +750,15 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext, case OE_RRR(CMULHR, 0, X0): case OE_RRR(CMULH, 0, X0): case OE_RRR(CMUL, 0, X0): + return TILEGX_EXCP_OPCODE_UNIMPLEMENTED; case OE_RRR(CRC32_32, 0, X0): + gen_helper_crc32_32(tdest, tsrca, tsrcb); + mnemonic = "crc32_32"; + break; case OE_RRR(CRC32_8, 0, X0): - return TILEGX_EXCP_OPCODE_UNIMPLEMENTED; + gen_helper_crc32_8(tdest, tsrca, tsrcb); + mnemonic = "crc32_8"; + break; case OE_RRR(DBLALIGN2, 0, X0): case OE_RRR(DBLALIGN2, 0, X1): gen_dblaligni(tdest, tsrca, tsrcb, 16); |