@@ -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;
+}
@@ -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)
@@ -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);
Signed-off-by: Richard Henderson <rth@twiddle.net> --- target-tilegx/helper.c | 19 +++++++++++++++++++ target-tilegx/helper.h | 2 ++ target-tilegx/translate.c | 8 +++++++- 3 files changed, 28 insertions(+), 1 deletion(-)