[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[RFC PATCH 23/42] target/mips/tx79: Introduce PEXE[HW] opcodes (Parallel
From: |
Philippe Mathieu-Daudé |
Subject: |
[RFC PATCH 23/42] target/mips/tx79: Introduce PEXE[HW] opcodes (Parallel Exchange Even) |
Date: |
Sun, 14 Feb 2021 18:58:53 +0100 |
Introduce the PEXEH (Parallel Exchange Even Halfword) and PEXEW
(Parallel Exchange Even Word) opcodes.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
target/mips/tx79.decode | 2 ++
target/mips/tx79_translate.c | 70 ++++++++++++++++++++++++++++++++++++
2 files changed, 72 insertions(+)
diff --git a/target/mips/tx79.decode b/target/mips/tx79.decode
index fbd2be569ad..0ea9fc95568 100644
--- a/target/mips/tx79.decode
+++ b/target/mips/tx79.decode
@@ -54,6 +54,8 @@ PEXTUW 011100 ..... ..... ..... 10010 101000
@rs_rt_rd
PCPYLD 011100 ..... ..... ..... 01110 001001 @rs_rt_rd
PAND 011100 ..... ..... ..... 10010 001001 @rs_rt_rd
PXOR 011100 ..... ..... ..... 10011 001001 @rs_rt_rd
+PEXEH 011100 00000 ..... ..... 11010 001001 @rt_rd
+PEXEW 011100 00000 ..... ..... 11110 001001 @rt_rd
# MMI3
diff --git a/target/mips/tx79_translate.c b/target/mips/tx79_translate.c
index 47d84c465a2..59451a043a4 100644
--- a/target/mips/tx79_translate.c
+++ b/target/mips/tx79_translate.c
@@ -683,3 +683,73 @@ static bool trans_PINTEH(DisasContext *ctx, arg_rtype *a)
return true;
}
+
+/* Parallel Exchange Even Halfword */
+static bool trans_PEXEH(DisasContext *ctx, arg_rtype *a)
+{
+ TCGv_i64 ax;
+
+ if (a->rd == 0) {
+ /* nop */
+ return true;
+ }
+ if (a->rt == 0) {
+ tcg_gen_movi_i64(cpu_gpr[a->rd], 0);
+ tcg_gen_movi_i64(cpu_gpr_hi[a->rd], 0);
+ return true;
+ }
+
+ ax = tcg_temp_new_i64();
+
+ /* Lower halve */
+ tcg_gen_mov_i64(ax, cpu_gpr[a->rt]);
+ if (a->rd != a->rt) {
+ tcg_gen_mov_i64(cpu_gpr[a->rd], cpu_gpr[a->rt]);
+ }
+ tcg_gen_deposit_i64(cpu_gpr[a->rd], cpu_gpr[a->rd], ax, 32, 16);
+ tcg_gen_shri_i64(ax, ax, 32);
+ tcg_gen_deposit_i64(cpu_gpr[a->rd], cpu_gpr[a->rd], ax, 0, 16);
+
+ /* Upper halve */
+ tcg_gen_mov_i64(ax, cpu_gpr_hi[a->rt]);
+ if (a->rd != a->rt) {
+ tcg_gen_mov_i64(cpu_gpr_hi[a->rd], cpu_gpr_hi[a->rt]);
+ }
+ tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], cpu_gpr_hi[a->rd], ax, 32, 16);
+ tcg_gen_shri_i64(ax, ax, 32);
+ tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], cpu_gpr_hi[a->rd], ax, 0, 16);
+
+ tcg_temp_free(ax);
+
+ return true;
+}
+
+/* Parallel Exchange Even Word */
+static bool trans_PEXEW(DisasContext *ctx, arg_rtype *a)
+{
+ TCGv_i64 ah, al;
+
+ if (a->rd == 0) {
+ /* nop */
+ return true;
+ }
+ if (a->rt == 0) {
+ tcg_gen_movi_i64(cpu_gpr[a->rd], 0);
+ tcg_gen_movi_i64(cpu_gpr_hi[a->rd], 0);
+ return true;
+ }
+
+ ah = tcg_temp_new_i64();
+ al = tcg_temp_new_i64();
+
+ gen_load_gpr(ah, a->rt);
+ gen_load_gpr_hi(al, a->rt);
+
+ tcg_gen_deposit_i64(cpu_gpr[a->rd], ah, al, 0, 32);
+ tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], al, ah, 0, 32);
+
+ tcg_temp_free(al);
+ tcg_temp_free(ah);
+
+ return true;
+}
--
2.26.2
- Re: [RFC PATCH 16/42] target/mips/tx79: Introduce PSUB* opcodes (Parallel Subtract), (continued)
- [RFC PATCH 19/42] target/mips/tx79: Introduce PCEQ* opcodes (Parallel Compare for Equal), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 18/42] target/mips/tx79: Introduce PEXTU[BHW] opcodes (Parallel Extend Lower), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 20/42] target/mips/tx79: Introduce PCGT* (Parallel Compare for Greater Than), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 21/42] target/mips/tx79: Introduce PPACW opcode (Parallel Pack to Word), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 22/42] target/mips/tx79: Introduce PINTEH (Parallel Interleave Even Halfword), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 23/42] target/mips/tx79: Introduce PEXE[HW] opcodes (Parallel Exchange Even),
Philippe Mathieu-Daudé <=
- [RFC PATCH 24/42] target/mips/tx79: Introduce PROT3W opcode (Parallel Rotate 3 Words), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 25/42] target/mips/tx79: Introduce LQ opcode (Load Quadword), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 26/42] target/mips/tx79: Introduce SQ opcode (Store Quadword), Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 27/42] target/mips/translate: Make gen_rdhwr() public, Philippe Mathieu-Daudé, 2021/02/14
- [RFC PATCH 28/42] target/mips/tx79: Move RDHWR usermode kludge to trans_SQ(), Philippe Mathieu-Daudé, 2021/02/14