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authorRichard Henderson <rth@twiddle.net>2015-09-23 10:12:16 -0700
committerRichard Henderson <rth@twiddle.net>2015-10-07 20:03:14 +1100
commitba1fc78f65fdea9d4b14d6449514c1351ad64fa4 (patch)
tree427dcb7fc140e7367d8f88d07cd5da58f61dde68
parent38c949ffe7497b1d833bca5f70b22c87df9bd567 (diff)
downloadqemu-arm-ba1fc78f65fdea9d4b14d6449514c1351ad64fa4.tar.gz
target-tilegx: Implement crc instructions
Signed-off-by: Richard Henderson <rth@twiddle.net>
-rw-r--r--target-tilegx/helper.c19
-rw-r--r--target-tilegx/helper.h2
-rw-r--r--target-tilegx/translate.c8
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);