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authorChen Gang <gang.chen.5i5j@gmail.com>2015-10-04 19:01:27 +0800
committerRichard Henderson <rth@twiddle.net>2015-10-07 20:03:16 +1100
commita419e22d703667211521d4257df294047c13eca3 (patch)
tree6581378e6ead49c265d387f1b2e4fc12c598b8eb /target-tilegx
parentaaf893a6ad6c7c0a986638ba599000e13f9f4182 (diff)
downloadqemu-arm-a419e22d703667211521d4257df294047c13eca3.tar.gz
target-tilegx: Implement v2mults instruction
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Message-Id: <1443956491-26850-3-git-send-email-gang.chen.5i5j@gmail.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tilegx')
-rw-r--r--target-tilegx/helper.h1
-rw-r--r--target-tilegx/simd_helper.c15
-rw-r--r--target-tilegx/translate.c4
3 files changed, 20 insertions, 0 deletions
diff --git a/target-tilegx/helper.h b/target-tilegx/helper.h
index c58ee20ede..bbcc4761eb 100644
--- a/target-tilegx/helper.h
+++ b/target-tilegx/helper.h
@@ -16,6 +16,7 @@ DEF_HELPER_FLAGS_2(v2int_h, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(v2int_l, 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(v2mults, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(v1shl, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(v1shru, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(v1shrs, TCG_CALL_NO_RWG_SE, i64, i64, i64)
diff --git a/target-tilegx/simd_helper.c b/target-tilegx/simd_helper.c
index d294671003..6d7bb5ce2b 100644
--- a/target-tilegx/simd_helper.c
+++ b/target-tilegx/simd_helper.c
@@ -41,6 +41,21 @@ uint64_t helper_v1multu(uint64_t a, uint64_t b)
return r;
}
+uint64_t helper_v2mults(uint64_t a, uint64_t b)
+{
+ uint64_t r = 0;
+ int i;
+
+ /* While the instruction talks about signed inputs, with a
+ truncated result the sign of the inputs doesn't matter. */
+ for (i = 0; i < 64; i += 16) {
+ unsigned ae = extract64(a, i, 16);
+ unsigned be = extract64(b, i, 16);
+ r = deposit64(r, i, 16, ae * be);
+ }
+ return r;
+}
+
uint64_t helper_v1shl(uint64_t a, uint64_t b)
{
uint64_t m;
diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
index 034cbc22c9..eb2d0b163f 100644
--- a/target-tilegx/translate.c
+++ b/target-tilegx/translate.c
@@ -1355,7 +1355,11 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext,
case OE_RRR(V2MNZ, 0, X1):
case OE_RRR(V2MULFSC, 0, X0):
case OE_RRR(V2MULS, 0, X0):
+ return TILEGX_EXCP_OPCODE_UNIMPLEMENTED;
case OE_RRR(V2MULTS, 0, X0):
+ gen_helper_v2mults(tdest, tsrca, tsrcb);
+ mnemonic = "v2mults";
+ break;
case OE_RRR(V2MZ, 0, X0):
case OE_RRR(V2MZ, 0, X1):
case OE_RRR(V2PACKH, 0, X0):