[Qemu-devel] [PATCH 08/13] target/openrisc: Convert dec_logic

[Richard Henderson]

Signed-off-by: Richard Henderson <address@hidden>
---
 target/openrisc/translate.c  | 62 +++++++++++++++++++-------------------------
 target/openrisc/insns.decode |  6 +++++
 2 files changed, 32 insertions(+), 36 deletions(-)

diff --git a/target/openrisc/translate.c b/target/openrisc/translate.c
index 8ca01e1a33..f2f9a0c0d2 100644
--- a/target/openrisc/translate.c
+++ b/target/openrisc/translate.c
@@ -999,42 +999,36 @@ static bool trans_l_msbu(DisasContext *dc, arg_ab *a, 
uint32_t insn)
     return true;
 }
 
-static void dec_logic(DisasContext *dc, uint32_t insn)
+static bool trans_l_slli(DisasContext *dc, arg_dal *a, uint32_t insn)
 {
-    uint32_t op0;
-    uint32_t rd, ra, L6, S6;
-    op0 = extract32(insn, 6, 2);
-    rd = extract32(insn, 21, 5);
-    ra = extract32(insn, 16, 5);
-    L6 = extract32(insn, 0, 6);
-    S6 = L6 & (TARGET_LONG_BITS - 1);
+    LOG_DIS("l.slli r%d, r%d, %d\n", a->d, a->a, a->l);
+    check_r0_write(a->d);
+    tcg_gen_shli_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
+    return true;
+}
 
-    check_r0_write(rd);
-    switch (op0) {
-    case 0x00:    /* l.slli */
-        LOG_DIS("l.slli r%d, r%d, %d\n", rd, ra, L6);
-        tcg_gen_shli_tl(cpu_R[rd], cpu_R[ra], S6);
-        break;
+static bool trans_l_srli(DisasContext *dc, arg_dal *a, uint32_t insn)
+{
+    LOG_DIS("l.srli r%d, r%d, %d\n", a->d, a->a, a->l);
+    check_r0_write(a->d);
+    tcg_gen_shri_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
+    return true;
+}
 
-    case 0x01:    /* l.srli */
-        LOG_DIS("l.srli r%d, r%d, %d\n", rd, ra, L6);
-        tcg_gen_shri_tl(cpu_R[rd], cpu_R[ra], S6);
-        break;
+static bool trans_l_srai(DisasContext *dc, arg_dal *a, uint32_t insn)
+{
+    LOG_DIS("l.srai r%d, r%d, %d\n", a->d, a->a, a->l);
+    check_r0_write(a->d);
+    tcg_gen_sari_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
+    return true;
+}
 
-    case 0x02:    /* l.srai */
-        LOG_DIS("l.srai r%d, r%d, %d\n", rd, ra, L6);
-        tcg_gen_sari_tl(cpu_R[rd], cpu_R[ra], S6);
-        break;
-
-    case 0x03:    /* l.rori */
-        LOG_DIS("l.rori r%d, r%d, %d\n", rd, ra, L6);
-        tcg_gen_rotri_tl(cpu_R[rd], cpu_R[ra], S6);
-        break;
-
-    default:
-        gen_illegal_exception(dc);
-        break;
-    }
+static bool trans_l_rori(DisasContext *dc, arg_dal *a, uint32_t insn)
+{
+    LOG_DIS("l.rori r%d, r%d, %d\n", a->d, a->a, a->l);
+    check_r0_write(a->d);
+    tcg_gen_rotri_tl(cpu_R[a->d], cpu_R[a->a], a->l & (TARGET_LONG_BITS - 1));
+    return true;
 }
 
 static void dec_M(DisasContext *dc, uint32_t insn)
@@ -1491,10 +1485,6 @@ static void disas_openrisc_insn(DisasContext *dc, 
OpenRISCCPU *cpu)
         dec_M(dc, insn);
         break;
 
-    case 0x2e:
-        dec_logic(dc, insn);
-        break;
-
     case 0x2f:
         dec_compi(dc, insn);
         break;
diff --git a/target/openrisc/insns.decode b/target/openrisc/insns.decode
index 7240c6fb77..fb8ba5812a 100644
--- a/target/openrisc/insns.decode
+++ b/target/openrisc/insns.decode
@@ -20,6 +20,7 @@
 &dab            d a b
 &da             d a
 &ab             a b
+&dal            d a l
 
 ####
 # System Instructions
@@ -130,3 +131,8 @@ l_mac           110001 ----- a:5 b:5 ------- 0001
 l_macu          110001 ----- a:5 b:5 ------- 0011
 l_msb           110001 ----- a:5 b:5 ------- 0010
 l_msbu          110001 ----- a:5 b:5 ------- 0100
+
+l_slli          101110 d:5 a:5 -------- 00 l:6
+l_srli          101110 d:5 a:5 -------- 01 l:6
+l_srai          101110 d:5 a:5 -------- 10 l:6
+l_rori          101110 d:5 a:5 -------- 11 l:6
-- 
2.14.3