[PATCH v2 30/90] target/sparc: Move ADDC to decodetree

[Richard Henderson]

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/sparc/insns.decode |  2 ++
 target/sparc/translate.c  | 41 +++++++++++++++++++++++++++++++++++----
 2 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode
index 4005ce3df7..abcee27fd4 100644
--- a/target/sparc/insns.decode
+++ b/target/sparc/insns.decode
@@ -169,5 +169,7 @@ ORN         10 ..... 000110 ..... . .............          
@r_r_ri
 ORNcc       10 ..... 010110 ..... . .............          @r_r_ri
 XORN        10 ..... 000111 ..... . .............          @r_r_ri
 XORNcc      10 ..... 010111 ..... . .............          @r_r_ri
+ADDC        10 ..... 001000 ..... . .............          @r_r_ri
+ADDCcc      10 ..... 011000 ..... . .............          @r_r_ri
 
 Tcc         10 0 cond:4 111010 rs1:5 imm:1 cc:1 00000 rs2_or_imm:7
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 368bafc99a..27375c74ec 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -4193,6 +4193,43 @@ TRANS(ANDNcc, ALL, do_cc_arith, a, CC_OP_LOGIC, 
tcg_gen_andc_tl, NULL)
 TRANS(ORNcc, ALL, do_cc_arith, a, CC_OP_LOGIC, tcg_gen_orc_tl, NULL)
 TRANS(XORNcc, ALL, do_cc_arith, a, CC_OP_LOGIC, tcg_gen_eqv_tl, NULL)
 
+static TCGv gen_rs2_or_imm(DisasContext *dc, bool imm, int rs2_or_imm)
+{
+    /* For simplicity, we under-decoded the rs2 form. */
+    if (!imm && rs2_or_imm & ~0x1f) {
+        return NULL;
+    }
+    if (imm || rs2_or_imm == 0) {
+        return tcg_constant_tl(rs2_or_imm);
+    } else {
+        return cpu_regs[rs2_or_imm];
+    }
+}
+
+static bool trans_ADDC(DisasContext *dc, arg_r_r_ri *a)
+{
+    TCGv src2 = gen_rs2_or_imm(dc, a->imm, a->rs2_or_imm);
+
+    if (src2 == NULL) {
+        return false;
+    }
+    gen_op_addx_int(dc, gen_dest_gpr(dc, a->rd),
+                    gen_load_gpr(dc, a->rs1), src2, false);
+    return advance_pc(dc);
+}
+
+static bool trans_ADDCcc(DisasContext *dc, arg_r_r_ri *a)
+{
+    TCGv src2 = gen_rs2_or_imm(dc, a->imm, a->rs2_or_imm);
+
+    if (src2 == NULL) {
+        return false;
+    }
+    gen_op_addx_int(dc, gen_dest_gpr(dc, a->rd),
+                    gen_load_gpr(dc, a->rs1), src2, true);
+    return advance_pc(dc);
+}
+
 #define CHECK_IU_FEATURE(dc, FEATURE)                      \
     if (!((dc)->def->features & CPU_FEATURE_ ## FEATURE))  \
         goto illegal_insn;
@@ -4617,10 +4654,6 @@ static void disas_sparc_legacy(DisasContext *dc, 
unsigned int insn)
                     cpu_src1 = get_src1(dc, insn);
                     cpu_src2 = get_src2(dc, insn);
                     switch (xop & ~0x10) {
-                    case 0x8: /* addx, V9 addc */
-                        gen_op_addx_int(dc, cpu_dst, cpu_src1, cpu_src2,
-                                        (xop & 0x10));
-                        break;
 #ifdef TARGET_SPARC64
                     case 0x9: /* V9 mulx */
                         tcg_gen_mul_i64(cpu_dst, cpu_src1, cpu_src2);
-- 
2.34.1