target/mips/tx79: Introduce PCGT* (Parallel Compare for Greater Than)

Introduce the 'Parallel Compare for Greater Than' opcodes:

 - PCGTB (Parallel Compare for Greater Than Byte)
 - PCGTH (Parallel Compare for Greater Than Halfword)
 - PCGTW (Parallel Compare for Greater Than Word)

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210309145653.743937-15-f4bug@amsat.org>

diff --git a/target/mips/tcg/tx79.decode b/target/mips/tcg/tx79.decode
index cfe721755ca3ad57e91a01d308ce8978f01b0a3a..63fbe9694bbdd1e919bcd89cce468b874616c448 100644 (file)
--- a/target/mips/tcg/tx79.decode
+++ b/target/mips/tcg/tx79.decode
@@ -32,8 +32,11 @@ MTLO1           011100 .....  0000000000 00000 010011   @rs
 # MMI0
 
 PSUBW           011100 ..... ..... ..... 00001 001000   @rs_rt_rd
+PCGTW           011100 ..... ..... ..... 00010 001000   @rs_rt_rd
 PSUBH           011100 ..... ..... ..... 00101 001000   @rs_rt_rd
+PCGTH           011100 ..... ..... ..... 00110 001000   @rs_rt_rd
 PSUBB           011100 ..... ..... ..... 01001 001000   @rs_rt_rd
+PCGTB           011100 ..... ..... ..... 01010 001000   @rs_rt_rd
 PEXTLW          011100 ..... ..... ..... 10010 001000   @rs_rt_rd
 PEXTLH          011100 ..... ..... ..... 10110 001000   @rs_rt_rd
 PEXTLB          011100 ..... ..... ..... 11010 001000   @rs_rt_rd

diff --git a/target/mips/tcg/tx79_translate.c b/target/mips/tcg/tx79_translate.c
index 8dd510c2719c7a57f1ffa007551565c9b5abf437..f0e3d8c0b66ce9e2d71ce5ae9567d613676381bb 100644 (file)
--- a/target/mips/tcg/tx79_translate.c
+++ b/target/mips/tcg/tx79_translate.c
@@ -285,18 +285,36 @@ static bool trans_parallel_compare(DisasContext *ctx, arg_rtype *a,
     return true;
 }
 
+/* Parallel Compare for Greater Than Byte */
+static bool trans_PCGTB(DisasContext *ctx, arg_rtype *a)
+{
+    return trans_parallel_compare(ctx, a, TCG_COND_GE, 8);
+}
+
 /* Parallel Compare for Equal Byte */
 static bool trans_PCEQB(DisasContext *ctx, arg_rtype *a)
 {
     return trans_parallel_compare(ctx, a, TCG_COND_EQ, 8);
 }
 
+/* Parallel Compare for Greater Than Halfword */
+static bool trans_PCGTH(DisasContext *ctx, arg_rtype *a)
+{
+    return trans_parallel_compare(ctx, a, TCG_COND_GE, 16);
+}
+
 /* Parallel Compare for Equal Halfword */
 static bool trans_PCEQH(DisasContext *ctx, arg_rtype *a)
 {
     return trans_parallel_compare(ctx, a, TCG_COND_EQ, 16);
 }
 
+/* Parallel Compare for Greater Than Word */
+static bool trans_PCGTW(DisasContext *ctx, arg_rtype *a)
+{
+    return trans_parallel_compare(ctx, a, TCG_COND_GE, 32);
+}
+
 /* Parallel Compare for Equal Word */
 static bool trans_PCEQW(DisasContext *ctx, arg_rtype *a)
 {