Support for address masking

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4882 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 36 insertions, 22 deletions

diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index cbc4038b87..929c12fa35 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -57,6 +57,7 @@ typedef struct DisasContext {
     int is_br;
     int mem_idx;
     int fpu_enabled;
+    int address_mask_32bit;
     struct TranslationBlock *tb;
     uint32_t features;
 } DisasContext;
@@ -201,12 +202,22 @@ static void gen_op_store_QT0_fpr(unsigned int dst)
 #endif
 #endif
 
-#ifdef TARGET_ABI32
-#define ABI32_MASK(addr) tcg_gen_andi_tl(addr, addr, 0xffffffffULL);
+#ifdef TARGET_SPARC64
+#ifndef TARGET_ABI32
+#define AM_CHECK(dc) ((dc)->address_mask_32bit)
 #else
-#define ABI32_MASK(addr)
+#define AM_CHECK(dc) (1)
+#endif
 #endif
 
+static inline void gen_address_mask(DisasContext *dc, TCGv addr)
+{
+#ifdef TARGET_SPARC64
+    if (AM_CHECK(dc))
+        tcg_gen_andi_tl(addr, addr, 0xffffffffULL);
+#endif
+}
+
 static inline void gen_movl_reg_TN(int reg, TCGv tn)
 {
     if (reg == 0)
@@ -4199,15 +4210,15 @@ static void disas_sparc_insn(DisasContext * dc)
                 (xop > 0x2c && xop <= 0x33) || xop == 0x1f || xop == 0x3d) {
                 switch (xop) {
                 case 0x0:       /* load unsigned word */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld32u(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x1:       /* load unsigned byte */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld8u(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x2:       /* load unsigned halfword */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld16u(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x3:       /* load double word */
@@ -4221,7 +4232,7 @@ static void disas_sparc_insn(DisasContext * dc)
                         tcg_gen_helper_0_2(helper_check_align, cpu_addr,
                                            r_const); // XXX remove
                         tcg_temp_free(r_const);
-                        ABI32_MASK(cpu_addr);
+                        gen_address_mask(dc, cpu_addr);
                         tcg_gen_qemu_ld64(cpu_tmp64, cpu_addr, dc->mem_idx);
                         tcg_gen_trunc_i64_tl(cpu_tmp0, cpu_tmp64);
                         tcg_gen_andi_tl(cpu_tmp0, cpu_tmp0, 0xffffffffULL);
@@ -4232,18 +4243,18 @@ static void disas_sparc_insn(DisasContext * dc)
                     }
                     break;
                 case 0x9:       /* load signed byte */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld8s(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0xa:       /* load signed halfword */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld16s(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0xd:       /* ldstub -- XXX: should be atomically */
                     {
                         TCGv r_const;
 
-                        ABI32_MASK(cpu_addr);
+                        gen_address_mask(dc, cpu_addr);
                         tcg_gen_qemu_ld8s(cpu_val, cpu_addr, dc->mem_idx);
                         r_const = tcg_const_tl(0xff);
                         tcg_gen_qemu_st8(r_const, cpu_addr, dc->mem_idx);
@@ -4254,7 +4265,7 @@ static void disas_sparc_insn(DisasContext * dc)
                                    atomically */
                     CHECK_IU_FEATURE(dc, SWAP);
                     gen_movl_reg_TN(rd, cpu_val);
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld32u(cpu_tmp32, cpu_addr, dc->mem_idx);
                     tcg_gen_qemu_st32(cpu_val, cpu_addr, dc->mem_idx);
                     tcg_gen_extu_i32_tl(cpu_val, cpu_tmp32);
@@ -4356,11 +4367,11 @@ static void disas_sparc_insn(DisasContext * dc)
 #endif
 #ifdef TARGET_SPARC64
                 case 0x08: /* V9 ldsw */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld32s(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x0b: /* V9 ldx */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld64(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x18: /* V9 ldswa */
@@ -4402,13 +4413,13 @@ static void disas_sparc_insn(DisasContext * dc)
                 save_state(dc, cpu_cond);
                 switch (xop) {
                 case 0x20:      /* load fpreg */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld32u(cpu_tmp32, cpu_addr, dc->mem_idx);
                     tcg_gen_st_i32(cpu_tmp32, cpu_env,
                                    offsetof(CPUState, fpr[rd]));
                     break;
                 case 0x21:      /* load fsr */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_ld32u(cpu_tmp32, cpu_addr, dc->mem_idx);
                     tcg_gen_st_i32(cpu_tmp32, cpu_env,
                                    offsetof(CPUState, ft0));
@@ -4443,15 +4454,15 @@ static void disas_sparc_insn(DisasContext * dc)
                 gen_movl_reg_TN(rd, cpu_val);
                 switch (xop) {
                 case 0x4: /* store word */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_st32(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x5: /* store byte */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_st8(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x6: /* store halfword */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_st16(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x7: /* store double word */
@@ -4461,7 +4472,7 @@ static void disas_sparc_insn(DisasContext * dc)
                         TCGv r_low, r_const;
 
                         save_state(dc, cpu_cond);
-                        ABI32_MASK(cpu_addr);
+                        gen_address_mask(dc, cpu_addr);
                         r_const = tcg_const_i32(7);
                         tcg_gen_helper_0_2(helper_check_align, cpu_addr,
                                            r_const); // XXX remove
@@ -4522,7 +4533,7 @@ static void disas_sparc_insn(DisasContext * dc)
 #endif
 #ifdef TARGET_SPARC64
                 case 0x0e: /* V9 stx */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_qemu_st64(cpu_val, cpu_addr, dc->mem_idx);
                     break;
                 case 0x1e: /* V9 stxa */
@@ -4539,13 +4550,13 @@ static void disas_sparc_insn(DisasContext * dc)
                 save_state(dc, cpu_cond);
                 switch (xop) {
                 case 0x24: /* store fpreg */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_ld_i32(cpu_tmp32, cpu_env,
                                    offsetof(CPUState, fpr[rd]));
                     tcg_gen_qemu_st32(cpu_tmp32, cpu_addr, dc->mem_idx);
                     break;
                 case 0x25: /* stfsr, V9 stxfsr */
-                    ABI32_MASK(cpu_addr);
+                    gen_address_mask(dc, cpu_addr);
                     tcg_gen_helper_0_0(helper_stfsr);
                     tcg_gen_ld_i32(cpu_tmp32, cpu_env,
                                    offsetof(CPUState, ft0));
@@ -4739,6 +4750,9 @@ static inline int gen_intermediate_code_internal(TranslationBlock * tb,
 #endif
     } else
         dc->fpu_enabled = 0;
+#ifdef TARGET_SPARC64
+    dc->address_mask_32bit = env->pstate & PS_AM;
+#endif
     gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
 
     cpu_tmp0 = tcg_temp_new(TCG_TYPE_TL);