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-rw-r--r--target-mips/translate.c32
-rw-r--r--target-mips/translate_init.c22
2 files changed, 52 insertions, 2 deletions
diff --git a/target-mips/translate.c b/target-mips/translate.c
index bab52cb254..55c2ca0c7b 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -13109,6 +13109,34 @@ static void gen_ldst_pair (DisasContext *ctx, uint32_t opc, int rd,
     tcg_temp_free(t1);
 }
 
+static void gen_sync(int stype)
+{
+    TCGBar tcg_mo = TCG_BAR_SC;
+
+    switch (stype) {
+    case 0x4: /* SYNC_WMB */
+        tcg_mo |= TCG_MO_ST_ST;
+        break;
+    case 0x10: /* SYNC_MB */
+        tcg_mo |= TCG_MO_ALL;
+        break;
+    case 0x11: /* SYNC_ACQUIRE */
+        tcg_mo |= TCG_MO_LD_LD | TCG_MO_LD_ST;
+        break;
+    case 0x12: /* SYNC_RELEASE */
+        tcg_mo |= TCG_MO_ST_ST | TCG_MO_LD_ST;
+        break;
+    case 0x13: /* SYNC_RMB */
+        tcg_mo |= TCG_MO_LD_LD;
+        break;
+    default:
+        tcg_mo |= TCG_MO_ALL;
+        break;
+    }
+
+    tcg_gen_mb(tcg_mo);
+}
+
 static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs)
 {
     int extension = (ctx->opcode >> 6) & 0x3f;
@@ -13384,7 +13412,7 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs)
     case 0x2d:
         switch (minor) {
         case SYNC:
-            /* NOP */
+            gen_sync(extract32(ctx->opcode, 16, 5));
             break;
         case SYSCALL:
             generate_exception_end(ctx, EXCP_SYSCALL);
@@ -17201,7 +17229,7 @@ static void decode_opc_special(CPUMIPSState *env, DisasContext *ctx)
         break;
     case OPC_SYNC:
         check_insn(ctx, ISA_MIPS2);
-        /* Treat as NOP. */
+        gen_sync(extract32(ctx->opcode, 6, 5));
         break;
 
 #if defined(TARGET_MIPS64)
diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c
index 39ed5c4c1b..6ae23e476f 100644
--- a/target-mips/translate_init.c
+++ b/target-mips/translate_init.c
@@ -256,6 +256,28 @@ static const mips_def_t mips_defs[] =
         .mmu_type = MMU_TYPE_R4000,
     },
     {
+        .name = "24KEc",
+        .CP0_PRid = 0x00019600,
+        .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
+                       (MMU_TYPE_R4000 << CP0C0_MT),
+        .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
+                       (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
+                       (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
+                       (1 << CP0C1_CA),
+        .CP0_Config2 = MIPS_CONFIG2,
+        .CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_DSPP) | (0 << CP0C3_VInt),
+        .CP0_LLAddr_rw_bitmask = 0,
+        .CP0_LLAddr_shift = 4,
+        .SYNCI_Step = 32,
+        .CCRes = 2,
+        /* we have a DSP, but no FPU */
+        .CP0_Status_rw_bitmask = 0x1378FF1F,
+        .SEGBITS = 32,
+        .PABITS = 32,
+        .insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP,
+        .mmu_type = MMU_TYPE_R4000,
+    },
+    {
         .name = "24Kf",
         .CP0_PRid = 0x00019300,
         .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |