diff mbox series

[v4,29/90] target/sparc: Move basic arithmetic to decodetree

Message ID 20231022060031.490251-30-richard.henderson@linaro.org
State Superseded
Headers show
Series target/sparc: Convert to decodetree | expand

Commit Message

Richard Henderson Oct. 22, 2023, 5:59 a.m. UTC
Move ADD, AND, OR, XOR, SUB, ANDN, ORN, XORN.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/sparc/insns.decode |  12 +++
 target/sparc/translate.c  | 178 ++++++++++++++++----------------------
 2 files changed, 87 insertions(+), 103 deletions(-)
diff mbox series

Patch

diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode
index eab737fdcc..3271c2997d 100644
--- a/target/sparc/insns.decode
+++ b/target/sparc/insns.decode
@@ -29,6 +29,9 @@  CALL    01 i:s30
 &r_r_ri     rd rs1 rs2_or_imm imm:bool
 @n_r_ri     .. ..... ...... rs1:5 imm:1 rs2_or_imm:s13     &r_r_ri rd=0
 
+&r_r_ri_cc  rd rs1 rs2_or_imm imm:bool cc:bool
+@r_r_ri_cc  .. rd:5  . cc:1 .... rs1:5 imm:1 rs2_or_imm:s13    &r_r_ri_cc
+
 {
   [
     STBAR           10 00000 101000 01111 0 0000000000000
@@ -152,6 +155,15 @@  WRHPR_hintp         10 00011 110011 ..... . .............  @n_r_ri
 WRHPR_htba          10 00101 110011 ..... . .............  @n_r_ri
 WRHPR_hstick_cmpr   10 11111 110011 ..... . .............  @n_r_ri
 
+ADD         10 ..... 0.0000 ..... . .............          @r_r_ri_cc
+AND         10 ..... 0.0001 ..... . .............          @r_r_ri_cc
+OR          10 ..... 0.0010 ..... . .............          @r_r_ri_cc
+XOR         10 ..... 0.0011 ..... . .............          @r_r_ri_cc
+SUB         10 ..... 0.0100 ..... . .............          @r_r_ri_cc
+ANDN        10 ..... 0.0101 ..... . .............          @r_r_ri_cc
+ORN         10 ..... 0.0110 ..... . .............          @r_r_ri_cc
+XORN        10 ..... 0.0111 ..... . .............          @r_r_ri_cc
+
 Tcc_r       10 0 cond:4 111010 rs1:5 0 cc:1 0000000 rs2:5
 {
   # For v7, the entire simm13 field is present, but masked to 7 bits.
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index ea991bf1f8..4bb545e9c5 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -4151,6 +4151,81 @@  static bool trans_NOP_v7(DisasContext *dc, arg_NOP_v7 *a)
     return false;
 }
 
+static bool do_arith(DisasContext *dc, arg_r_r_ri_cc *a, int cc_op,
+                     void (*func)(TCGv, TCGv, TCGv),
+                     void (*funci)(TCGv, TCGv, target_long))
+{
+    TCGv dst, src1;
+
+    /* For simplicity, we under-decoded the rs2 form. */
+    if (!a->imm && a->rs2_or_imm & ~0x1f) {
+        return false;
+    }
+
+    if (a->cc) {
+        dst = cpu_cc_dst;
+    } else {
+        dst = gen_dest_gpr(dc, a->rd);
+    }
+    src1 = gen_load_gpr(dc, a->rs1);
+
+    if (a->imm || a->rs2_or_imm == 0) {
+        if (funci) {
+            funci(dst, src1, a->rs2_or_imm);
+        } else {
+            func(dst, src1, tcg_constant_tl(a->rs2_or_imm));
+        }
+    } else {
+        func(dst, src1, cpu_regs[a->rs2_or_imm]);
+    }
+    gen_store_gpr(dc, a->rd, dst);
+
+    if (a->cc) {
+        tcg_gen_movi_i32(cpu_cc_op, cc_op);
+        dc->cc_op = cc_op;
+    }
+    return advance_pc(dc);
+}
+
+TRANS(AND, ALL, do_arith, a, CC_OP_LOGIC, tcg_gen_and_tl, tcg_gen_andi_tl)
+TRANS(XOR, ALL, do_arith, a, CC_OP_LOGIC, tcg_gen_xor_tl, tcg_gen_xori_tl)
+TRANS(ANDN, ALL, do_arith, a, CC_OP_LOGIC, tcg_gen_andc_tl, NULL)
+TRANS(ORN, ALL, do_arith, a, CC_OP_LOGIC, tcg_gen_orc_tl, NULL)
+TRANS(XORN, ALL, do_arith, a, CC_OP_LOGIC, tcg_gen_eqv_tl, NULL)
+
+static bool trans_OR(DisasContext *dc, arg_r_r_ri_cc *a)
+{
+    /* OR with %g0 is the canonical alias for MOV. */
+    if (!a->cc && a->rs1 == 0) {
+        if (a->imm || a->rs2_or_imm == 0) {
+            gen_store_gpr(dc, a->rd, tcg_constant_tl(a->rs2_or_imm));
+        } else if (a->rs2_or_imm & ~0x1f) {
+            /* For simplicity, we under-decoded the rs2 form. */
+            return false;
+        } else {
+            gen_store_gpr(dc, a->rd, cpu_regs[a->rs2_or_imm]);
+        }
+        return advance_pc(dc);
+    }
+    return do_arith(dc, a, CC_OP_LOGIC, tcg_gen_or_tl, tcg_gen_ori_tl);
+}
+
+static bool trans_ADD(DisasContext *dc, arg_r_r_ri_cc *a)
+{
+    if (a->cc) {
+        return do_arith(dc, a, CC_OP_ADD, gen_op_add_cc, NULL);
+    }
+    return do_arith(dc, a, -1, tcg_gen_add_tl, tcg_gen_addi_tl);
+}
+
+static bool trans_SUB(DisasContext *dc, arg_r_r_ri_cc *a)
+{
+    if (a->cc) {
+        return do_arith(dc, a, CC_OP_SUB, gen_op_sub_cc, NULL);
+    }
+    return do_arith(dc, a, -1, tcg_gen_sub_tl, tcg_gen_subi_tl);
+}
+
 #define CHECK_IU_FEATURE(dc, FEATURE)                      \
     if (!((dc)->def->features & CPU_FEATURE_ ## FEATURE))  \
         goto illegal_insn;
@@ -4499,43 +4574,6 @@  static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
                     default:
                         goto illegal_insn;
                 }
-            } else if (xop == 0x2) {
-                TCGv dst = gen_dest_gpr(dc, rd);
-                rs1 = GET_FIELD(insn, 13, 17);
-                if (rs1 == 0) {
-                    /* clr/mov shortcut : or %g0, x, y -> mov x, y */
-                    if (IS_IMM) {       /* immediate */
-                        simm = GET_FIELDs(insn, 19, 31);
-                        tcg_gen_movi_tl(dst, simm);
-                        gen_store_gpr(dc, rd, dst);
-                    } else {            /* register */
-                        rs2 = GET_FIELD(insn, 27, 31);
-                        if (rs2 == 0) {
-                            tcg_gen_movi_tl(dst, 0);
-                            gen_store_gpr(dc, rd, dst);
-                        } else {
-                            cpu_src2 = gen_load_gpr(dc, rs2);
-                            gen_store_gpr(dc, rd, cpu_src2);
-                        }
-                    }
-                } else {
-                    cpu_src1 = get_src1(dc, insn);
-                    if (IS_IMM) {       /* immediate */
-                        simm = GET_FIELDs(insn, 19, 31);
-                        tcg_gen_ori_tl(dst, cpu_src1, simm);
-                        gen_store_gpr(dc, rd, dst);
-                    } else {            /* register */
-                        rs2 = GET_FIELD(insn, 27, 31);
-                        if (rs2 == 0) {
-                            /* mov shortcut:  or x, %g0, y -> mov x, y */
-                            gen_store_gpr(dc, rd, cpu_src1);
-                        } else {
-                            cpu_src2 = gen_load_gpr(dc, rs2);
-                            tcg_gen_or_tl(dst, cpu_src1, cpu_src2);
-                            gen_store_gpr(dc, rd, dst);
-                        }
-                    }
-                }
 #ifdef TARGET_SPARC64
             } else if (xop == 0x25) { /* sll, V9 sllx */
                 cpu_src1 = get_src1(dc, insn);
@@ -4612,72 +4650,6 @@  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 0x0: /* add */
-                        if (xop & 0x10) {
-                            gen_op_add_cc(cpu_dst, cpu_src1, cpu_src2);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_ADD);
-                            dc->cc_op = CC_OP_ADD;
-                        } else {
-                            tcg_gen_add_tl(cpu_dst, cpu_src1, cpu_src2);
-                        }
-                        break;
-                    case 0x1: /* and */
-                        tcg_gen_and_tl(cpu_dst, cpu_src1, cpu_src2);
-                        if (xop & 0x10) {
-                            tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_LOGIC);
-                            dc->cc_op = CC_OP_LOGIC;
-                        }
-                        break;
-                    case 0x2: /* or */
-                        tcg_gen_or_tl(cpu_dst, cpu_src1, cpu_src2);
-                        if (xop & 0x10) {
-                            tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_LOGIC);
-                            dc->cc_op = CC_OP_LOGIC;
-                        }
-                        break;
-                    case 0x3: /* xor */
-                        tcg_gen_xor_tl(cpu_dst, cpu_src1, cpu_src2);
-                        if (xop & 0x10) {
-                            tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_LOGIC);
-                            dc->cc_op = CC_OP_LOGIC;
-                        }
-                        break;
-                    case 0x4: /* sub */
-                        if (xop & 0x10) {
-                            gen_op_sub_cc(cpu_dst, cpu_src1, cpu_src2);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_SUB);
-                            dc->cc_op = CC_OP_SUB;
-                        } else {
-                            tcg_gen_sub_tl(cpu_dst, cpu_src1, cpu_src2);
-                        }
-                        break;
-                    case 0x5: /* andn */
-                        tcg_gen_andc_tl(cpu_dst, cpu_src1, cpu_src2);
-                        if (xop & 0x10) {
-                            tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_LOGIC);
-                            dc->cc_op = CC_OP_LOGIC;
-                        }
-                        break;
-                    case 0x6: /* orn */
-                        tcg_gen_orc_tl(cpu_dst, cpu_src1, cpu_src2);
-                        if (xop & 0x10) {
-                            tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_LOGIC);
-                            dc->cc_op = CC_OP_LOGIC;
-                        }
-                        break;
-                    case 0x7: /* xorn */
-                        tcg_gen_eqv_tl(cpu_dst, cpu_src1, cpu_src2);
-                        if (xop & 0x10) {
-                            tcg_gen_mov_tl(cpu_cc_dst, cpu_dst);
-                            tcg_gen_movi_i32(cpu_cc_op, CC_OP_LOGIC);
-                            dc->cc_op = CC_OP_LOGIC;
-                        }
-                        break;
                     case 0x8: /* addx, V9 addc */
                         gen_op_addx_int(dc, cpu_dst, cpu_src1, cpu_src2,
                                         (xop & 0x10));