ARM TCG conversion 4/16.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4141 c046a42c-6fe2-441c-8c8c-71466251a162

ARM TCG conversion 4/16.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4141 c046a42c-6fe2-441c-8c8c-71466251a162
pbrook
1 parent 9a119ff6
Showing 6 changed files with 121 additions and 118 deletions
target-arm/helper.c
target-arm/helpers.h
target-arm/op.c
target-arm/op_helper.c
target-arm/op_neon.h
target-arm/translate.c
@@ -322,7 +322,6 @@ void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
     env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask);
 }
-#define HELPER(x) helper_##x
 /* Sign/zero extend */
 uint32_t HELPER(sxtb16)(uint32_t x)
 {
@@ -1894,4 +1893,3 @@ void cpu_arm_set_cp_io(CPUARMState *env, int cpnum,
 }
 #endif
-
-#ifndef DEF_HELPER
 #define DEF_HELPER(name, ret, args) ret helper_##name args;
+
+#ifdef GEN_HELPER
+#define DEF_HELPER_1_1(name, ret, args) \
+DEF_HELPER(name, ret, args) \
+static inline void gen_helper_##name(TCGv ret, TCGv arg1) \
+{ \
+    tcg_gen_helper_1_1(helper_##name, ret, arg1); \
+}
+#define DEF_HELPER_1_2(name, ret, args) \
+DEF_HELPER(name, ret, args) \
+static inline void gen_helper_##name(TCGv ret, TCGv arg1, TCGv arg2) \
+{ \
+    tcg_gen_helper_1_2(helper_##name, ret, arg1, arg2); \
+}
+#else /* !GEN_HELPER */
+#define DEF_HELPER_1_1 DEF_HELPER
+#define DEF_HELPER_1_2 DEF_HELPER
+#define HELPER(x) helper_##x
 #endif
-DEF_HELPER(clz, uint32_t, (uint32_t))
-DEF_HELPER(sxtb16, uint32_t, (uint32_t))
-DEF_HELPER(uxtb16, uint32_t, (uint32_t))
+DEF_HELPER_1_1(clz, uint32_t, (uint32_t))
+DEF_HELPER_1_1(sxtb16, uint32_t, (uint32_t))
+DEF_HELPER_1_1(uxtb16, uint32_t, (uint32_t))
+
+DEF_HELPER_1_2(add_setq, uint32_t, (uint32_t, uint32_t))
+DEF_HELPER_1_2(add_saturate, uint32_t, (uint32_t, uint32_t))
+DEF_HELPER_1_2(sub_saturate, uint32_t, (uint32_t, uint32_t))
+DEF_HELPER_1_2(add_usaturate, uint32_t, (uint32_t, uint32_t))
+DEF_HELPER_1_2(sub_usaturate, uint32_t, (uint32_t, uint32_t))
+DEF_HELPER_1_1(double_saturate, uint32_t, (int32_t))
+
+#undef DEF_HELPER
+#undef DEF_HELPER_1_1
+#undef DEF_HELPER_1_2
+#undef GEN_HELPER
@@ -425,105 +425,6 @@ void OPPROTO op_rorl_T1_T0_cc(void)
     FORCE_RET();
 }
-/* misc */
-#define SIGNBIT (uint32_t)0x80000000
-/* saturating arithmetic  */
-void OPPROTO op_addl_T0_T1_setq(void)
-{
-  uint32_t res;
-
-  res = T0 + T1;
-  if (((res ^ T0) & SIGNBIT) && !((T0 ^ T1) & SIGNBIT))
-      env->QF = 1;
-
-  T0 = res;
-  FORCE_RET();
-}
-
-void OPPROTO op_addl_T0_T1_saturate(void)
-{
-  uint32_t res;
-
-  res = T0 + T1;
-  if (((res ^ T0) & SIGNBIT) && !((T0 ^ T1) & SIGNBIT)) {
-      env->QF = 1;
-      if (T0 & SIGNBIT)
-          T0 = 0x80000000;
-      else
-          T0 = 0x7fffffff;
-  }
-  else
-    T0 = res;
-
-  FORCE_RET();
-}
-
-void OPPROTO op_subl_T0_T1_saturate(void)
-{
-  uint32_t res;
-
-  res = T0 - T1;
-  if (((res ^ T0) & SIGNBIT) && ((T0 ^ T1) & SIGNBIT)) {
-      env->QF = 1;
-      if (T0 & SIGNBIT)
-          T0 = 0x80000000;
-      else
-          T0 = 0x7fffffff;
-  }
-  else
-    T0 = res;
-
-  FORCE_RET();
-}
-
-void OPPROTO op_double_T1_saturate(void)
-{
-  int32_t val;
-
-  val = T1;
-  if (val >= 0x40000000) {
-      T1 = 0x7fffffff;
-      env->QF = 1;
-  } else if (val <= (int32_t)0xc0000000) {
-      T1 = 0x80000000;
-      env->QF = 1;
-  } else {
-      T1 = val << 1;
-  }
-  FORCE_RET();
-}
-
-/* Unsigned saturating arithmetic for NEON.  */
-void OPPROTO op_addl_T0_T1_usaturate(void)
-{
-  uint32_t res;
-
-  res = T0 + T1;
-  if (res < T0) {
-      env->QF = 1;
-      T0 = 0xffffffff;
-  } else {
-      T0 = res;
-  }
-
-  FORCE_RET();
-}
-
-void OPPROTO op_subl_T0_T1_usaturate(void)
-{
-  uint32_t res;
-
-  res = T0 - T1;
-  if (res > T0) {
-      env->QF = 1;
-      T0 = 0;
-  } else {
-      T0 = res;
-  }
-
-  FORCE_RET();
-}
-
 /* exceptions */
 void OPPROTO op_swi(void)
@@ -18,6 +18,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include "exec.h"
+#include "helpers.h"
 void raise_exception(int tt)
 {
@@ -303,3 +304,68 @@ void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
     env = saved_env;
 }
 #endif
+
+#define SIGNBIT (uint32_t)0x80000000
+uint32_t HELPER(add_setq)(uint32_t a, uint32_t b)
+{
+    uint32_t res = a + b;
+    if (((res ^ a) & SIGNBIT) && !((a ^ b) & SIGNBIT))
+        env->QF = 1;
+    return res;
+}
+
+uint32_t HELPER(add_saturate)(uint32_t a, uint32_t b)
+{
+    uint32_t res = a + b;
+    if (((res ^ a) & SIGNBIT) && !((a ^ b) & SIGNBIT)) {
+        env->QF = 1;
+        res = ~(((int32_t)a >> 31) ^ SIGNBIT);
+    }
+    return res;
+}
+
+uint32_t HELPER(sub_saturate)(uint32_t a, uint32_t b)
+{
+    uint32_t res = a - b;
+    if (((res ^ a) & SIGNBIT) && ((a ^ b) & SIGNBIT)) {
+        env->QF = 1;
+        res = ~(((int32_t)a >> 31) ^ SIGNBIT);
+    }
+    return res;
+}
+
+uint32_t HELPER(double_saturate)(int32_t val)
+{
+    uint32_t res;
+    if (val >= 0x40000000) {
+        res = ~SIGNBIT;
+        env->QF = 1;
+    } else if (val <= (int32_t)0xc0000000) {
+        res = SIGNBIT;
+        env->QF = 1;
+    } else {
+        res = val << 1;
+    }
+    return res;
+}
+
+uint32_t HELPER(add_usaturate)(uint32_t a, uint32_t b)
+{
+    uint32_t res = a + b;
+    if (res < a) {
+        env->QF = 1;
+        res = ~0;
+    }
+    return res;
+}
+
+uint32_t HELPER(sub_usaturate)(uint32_t a, uint32_t b)
+{
+    uint32_t res = a - b;
+    if (res > a) {
+        env->QF = 1;
+        res = 0;
+    }
+    return res;
+}
+
@@ -9,6 +9,7 @@
 /* Note that for NEON an "l" prefix means it is a wide operation, unlike
    scalar arm ops where it means a word size operation.  */
+#define SIGNBIT (uint32_t)0x80000000
 /* ??? NEON ops should probably have their own float status.  */
 #define NFS &env->vfp.fp_status
 #define NEON_OP(name) void OPPROTO op_neon_##name (void)
@@ -29,6 +29,8 @@
 #include "exec-all.h"
 #include "disas.h"
 #include "tcg-op.h"
+
+#define GEN_HELPER 1
 #include "helpers.h"
 #define ENABLE_ARCH_5J    0
@@ -200,13 +202,19 @@ static void store_reg(DisasContext *s, int reg, TCGv var)
 #define gen_sxtb(var) tcg_gen_ext8s_i32(var, var)
 #define gen_sxth(var) tcg_gen_ext16s_i32(var, var)
-#define HELPER_ADDR(x) helper_##x
-
-#define gen_sxtb16(var) tcg_gen_helper_1_1(HELPER_ADDR(sxtb16), var, var)
-#define gen_uxtb16(var) tcg_gen_helper_1_1(HELPER_ADDR(uxtb16), var, var)
+#define gen_sxtb16(var) gen_helper_sxtb16(var, var)
+#define gen_uxtb16(var) gen_helper_uxtb16(var, var)
-#define gen_op_clz_T0(var) \
-    tcg_gen_helper_1_1(HELPER_ADDR(clz), cpu_T[0], cpu_T[0])
+#define gen_op_addl_T0_T1_setq() \
+    gen_helper_add_setq(cpu_T[0], cpu_T[0], cpu_T[1])
+#define gen_op_addl_T0_T1_saturate() \
+    gen_helper_add_saturate(cpu_T[0], cpu_T[0], cpu_T[1])
+#define gen_op_subl_T0_T1_saturate() \
+    gen_helper_sub_saturate(cpu_T[0], cpu_T[0], cpu_T[1])
+#define gen_op_addl_T0_T1_usaturate() \
+    gen_helper_add_usaturate(cpu_T[0], cpu_T[0], cpu_T[1])
+#define gen_op_subl_T0_T1_usaturate() \
+    gen_helper_sub_usaturate(cpu_T[0], cpu_T[0], cpu_T[1])
 /* Dual 16-bit add.  Result placed in t0 and t1 is marked as dead.
     tmp = (t0 ^ t1) & 0x8000;
@@ -4526,7 +4534,7 @@ static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn)
                             switch (size) {
                             case 0: gen_op_neon_clz_u8(); break;
                             case 1: gen_op_neon_clz_u16(); break;
-                            case 2: gen_op_clz_T0(); break;
+                            case 2: gen_helper_clz(cpu_T[0], cpu_T[0]); break;
                             default: return 1;
                             }
                             break;
@@ -5021,9 +5029,9 @@ static void disas_arm_insn(CPUState * env, DisasContext *s)
             } else if (op1 == 3) {
                 /* clz */
                 rd = (insn >> 12) & 0xf;
-                gen_movl_T0_reg(s, rm);
-                gen_op_clz_T0();
-                gen_movl_reg_T0(s, rd);
+                tmp = load_reg(s, rm);
+                gen_helper_clz(tmp, tmp);
+                store_reg(s, rd, tmp);
             } else {
                 goto illegal_op;
             }
@@ -5055,7 +5063,7 @@ static void disas_arm_insn(CPUState * env, DisasContext *s)
             gen_movl_T0_reg(s, rm);
             gen_movl_T1_reg(s, rn);
             if (op1 & 2)
-                gen_op_double_T1_saturate();
+                gen_helper_double_saturate(cpu_T[1], cpu_T[1]);
             if (op1 & 1)
                 gen_op_subl_T0_T1_saturate();
             else
@@ -6317,7 +6325,7 @@ static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1)
                 gen_movl_T0_reg(s, rm);
                 gen_movl_T1_reg(s, rn);
                 if (op & 2)
-                    gen_op_double_T1_saturate();
+                    gen_helper_double_saturate(cpu_T[1], cpu_T[1]);
                 if (op & 1)
                     gen_op_subl_T0_T1_saturate();
                 else
@@ -6342,7 +6350,7 @@ static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1)
                     gen_op_sel_T0_T1();
                     break;
                 case 0x18: /* clz */
-                    gen_op_clz_T0();
+                    gen_helper_clz(cpu_T[0], cpu_T[0]);
                     break;
                 default:
                     goto illegal_op;