[RFC PATCH 20/42] target/mips/tx79: Introduce PCGT* (Parallel Compare for Greater Than)

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

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>
---
 target/mips/tx79.decode      |  3 +++
 target/mips/tx79_translate.c | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/target/mips/tx79.decode b/target/mips/tx79.decode
index cfe721755ca..63fbe9694bb 100644
--- a/target/mips/tx79.decode
+++ b/target/mips/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/tx79_translate.c b/target/mips/tx79_translate.c
index f084faa48a7..04249b0c20a 100644
--- a/target/mips/tx79_translate.c
+++ b/target/mips/tx79_translate.c
@@ -327,18 +327,36 @@ 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)
 {
-- 
2.26.2