[PATCH v10 14/26] target/loongarch: Add floating point load/store instruction translation

[Song Gao]

This includes:
- FLD.{S/D}, FST.{S/D}
- FLDX.{S/D}, FSTX.{S/D}
- FLD{GT/LE}.{S/D}, FST{GT/LE}.{S/D}

Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/loongarch/insn_trans/trans_fmemory.c.inc | 184 ++++++++++++++++++++++++
 target/loongarch/insns.decode                   |  24 ++++
 target/loongarch/translate.c                    |   1 +
 3 files changed, 209 insertions(+)
 create mode 100644 target/loongarch/insn_trans/trans_fmemory.c.inc

diff --git a/target/loongarch/insn_trans/trans_fmemory.c.inc 
b/target/loongarch/insn_trans/trans_fmemory.c.inc
new file mode 100644
index 0000000..31d738e
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fmemory.c.inc
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_fload_imm(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
+                          MemOp mop, bool nanbox)
+{
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->si12) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->si12);
+        addr = temp;
+    }
+
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+    return true;
+}
+
+static bool gen_fstore_imm(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
+                           MemOp mop, bool nanbox)
+{
+    TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv temp = NULL;
+
+    if (a->si12) {
+        temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, addr, a->si12);
+        addr = temp;
+    }
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    if (temp) {
+        tcg_temp_free(temp);
+    }
+    return true;
+}
+
+static bool gen_fload_tl(DisasContext *ctx, arg_fmt_fdrjrk *a,
+                         MemOp mop, bool nanbox)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_temp_free(addr);
+    return true;
+}
+
+static bool gen_fstore_tl(DisasContext *ctx, arg_fmt_fdrjrk *a,
+                          MemOp mop, bool nanbox)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    tcg_gen_add_tl(addr, src1, src2);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    tcg_temp_free(addr);
+    return true;
+}
+
+static bool gen_fload_gt(DisasContext *ctx, arg_fmt_fdrjrk *a,
+                         MemOp mop, bool nanbox)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_temp_free(addr);
+    return true;
+}
+
+static bool gen_fstore_gt(DisasContext *ctx, arg_fmt_fdrjrk *a,
+                          MemOp mop, bool nanbox)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtgt_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    tcg_temp_free(addr);
+    return true;
+}
+
+static bool gen_fload_le(DisasContext *ctx, arg_fmt_fdrjrk *a,
+                         MemOp mop, bool nanbox)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+    tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_temp_free(addr);
+    return true;
+}
+
+static bool gen_fstore_le(DisasContext *ctx, arg_fmt_fdrjrk *a,
+                          MemOp mop, bool nanbox)
+{
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+    TCGv addr = tcg_temp_new();
+
+    gen_helper_asrtle_d(cpu_env, src1, src2);
+    tcg_gen_add_tl(addr, src1, src2);
+
+    if (nanbox) {
+        gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+    }
+
+    tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+    tcg_temp_free(addr);
+    return true;
+}
+
+TRANS(fld_s, gen_fload_imm, MO_TESL, true)
+TRANS(fst_s, gen_fstore_imm, MO_TEUL, true)
+TRANS(fld_d, gen_fload_imm, MO_TEQ, false)
+TRANS(fst_d, gen_fstore_imm, MO_TEQ, false)
+TRANS(fldx_s, gen_fload_tl, MO_TESL, true)
+TRANS(fldx_d, gen_fload_tl, MO_TEQ, false)
+TRANS(fstx_s, gen_fstore_tl, MO_TEUL, true)
+TRANS(fstx_d, gen_fstore_tl, MO_TEQ, false)
+TRANS(fldgt_s, gen_fload_gt, MO_TESL, true)
+TRANS(fldgt_d, gen_fload_gt, MO_TEQ, false)
+TRANS(fldle_s, gen_fload_le, MO_TESL, true)
+TRANS(fldle_d, gen_fload_le, MO_TEQ, false)
+TRANS(fstgt_s, gen_fstore_gt, MO_TEUL, true)
+TRANS(fstgt_d, gen_fstore_gt, MO_TEQ, false)
+TRANS(fstle_s, gen_fstore_le, MO_TEUL, true)
+TRANS(fstle_d, gen_fstore_le, MO_TEQ, false)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index c37b9c9..ee1d544 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -71,6 +71,8 @@
 &fmt_fdcj           fd cj
 &fmt_cdrj           cd rj
 &fmt_rdcj           rd cj
+&fmt_fdrjrk         fd rj rk
+&fmt_fdrjsi12       fd rj si12
 
 #
 # Formats
@@ -105,6 +107,8 @@
 @fmt_fdcj            .... ........ ..... ..... .. ... .....   &fmt_fdcj        
   %fd %cj
 @fmt_cdrj            .... ........ ..... ..... ..... .. ...   &fmt_cdrj        
   %cd %rj
 @fmt_rdcj            .... ........ ..... ..... .. ... .....   &fmt_rdcj        
   %rd %cj
+@fmt_fdrjrk          .... ........ ..... ..... ..... .....    &fmt_fdrjrk      
   %fd %rj %rk
+@fmt_fdrjsi12        .... ...... ............ ..... .....     &fmt_fdrjsi12    
   %fd %rj %si12
 
 #
 # Fixed point arithmetic operation instruction
@@ -423,3 +427,23 @@ movfr2cf         0000 00010001 01001 10100 ..... 00 ...   
@fmt_cdfj
 movcf2fr         0000 00010001 01001 10101 00 ... .....   @fmt_fdcj
 movgr2cf         0000 00010001 01001 10110 ..... 00 ...   @fmt_cdrj
 movcf2gr         0000 00010001 01001 10111 00 ... .....   @fmt_rdcj
+
+#
+# Floating point load/store instruction
+#
+fld_s            0010 101100 ............ ..... .....     @fmt_fdrjsi12
+fst_s            0010 101101 ............ ..... .....     @fmt_fdrjsi12
+fld_d            0010 101110 ............ ..... .....     @fmt_fdrjsi12
+fst_d            0010 101111 ............ ..... .....     @fmt_fdrjsi12
+fldx_s           0011 10000011 00000 ..... ..... .....    @fmt_fdrjrk
+fldx_d           0011 10000011 01000 ..... ..... .....    @fmt_fdrjrk
+fstx_s           0011 10000011 10000 ..... ..... .....    @fmt_fdrjrk
+fstx_d           0011 10000011 11000 ..... ..... .....    @fmt_fdrjrk
+fldgt_s          0011 10000111 01000 ..... ..... .....    @fmt_fdrjrk
+fldgt_d          0011 10000111 01001 ..... ..... .....    @fmt_fdrjrk
+fldle_s          0011 10000111 01010 ..... ..... .....    @fmt_fdrjrk
+fldle_d          0011 10000111 01011 ..... ..... .....    @fmt_fdrjrk
+fstgt_s          0011 10000111 01100 ..... ..... .....    @fmt_fdrjrk
+fstgt_d          0011 10000111 01101 ..... ..... .....    @fmt_fdrjrk
+fstle_s          0011 10000111 01110 ..... ..... .....    @fmt_fdrjrk
+fstle_d          0011 10000111 01111 ..... ..... .....    @fmt_fdrjrk
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 5dc8849..bf329fd 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -189,6 +189,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend 
dst_ext)
 #include "insn_trans/trans_fcmp.c.inc"
 #include "insn_trans/trans_fcnv.c.inc"
 #include "insn_trans/trans_fmov.c.inc"
+#include "insn_trans/trans_fmemory.c.inc"
 
 static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
 {
-- 
1.8.3.1