target/xtensa: allow multiple names for single opcode

There are opcodes that differ only in encoding or possible range of
immediate arguments. Allow multiple names for single opcode translation
table entry to reduce code duplication in that case.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h
index 2765665ceca6689dec2408936b8f38a33f5b7918..db8ee70a0386f3bf1b19a87a00ff23a565068118 100644 (file)
--- a/target/xtensa/cpu.h
+++ b/target/xtensa/cpu.h
@@ -371,10 +371,12 @@ enum {
     XTENSA_OP_CHECK_INTERRUPTS = 0x200,
     XTENSA_OP_EXIT_TB_M1 = 0x400,
     XTENSA_OP_EXIT_TB_0 = 0x800,
+
+    XTENSA_OP_NAME_ARRAY = 0x8000,
 };
 
 typedef struct XtensaOpcodeOps {
-    const char *name;
+    const void *name;
     XtensaOpcodeOp translate;
     XtensaOpcodeBoolTest test_ill;
     XtensaOpcodeUintTest test_overflow;

diff --git a/target/xtensa/helper.c b/target/xtensa/helper.c
index 57709fc20cafab343508a5cf576d91b806c041f8..7008c6390d20cf0988f1207d7ff6d41c652dfd96 100644 (file)
--- a/target/xtensa/helper.c
+++ b/target/xtensa/helper.c
@@ -51,9 +51,19 @@ static GHashTable *hash_opcode_translators(const XtensaOpcodeTranslators *t)
     GHashTable *translator = g_hash_table_new(g_str_hash, g_str_equal);
 
     for (i = 0; i < t->num_opcodes; ++i) {
-        add_translator_to_hash(translator,
-                               (void *)t->opcode[i].name,
-                               (void *)(t->opcode + i));
+        if (t->opcode[i].op_flags & XTENSA_OP_NAME_ARRAY) {
+            const char * const *name = t->opcode[i].name;
+
+            for (j = 0; name[j]; ++j) {
+                add_translator_to_hash(translator,
+                                       (void *)name[j],
+                                       (void *)(t->opcode + i));
+            }
+        } else {
+            add_translator_to_hash(translator,
+                                   (void *)t->opcode[i].name,
+                                   (void *)(t->opcode + i));
+        }
     }
     return translator;
 }

diff --git a/target/xtensa/translate.c b/target/xtensa/translate.c
index 26342aaa1f82766959866f852c457eba7a8b69f8..1b730781ec050c4b71e670bbcc89fb0d3a3d8272 100644 (file)
--- a/target/xtensa/translate.c
+++ b/target/xtensa/translate.c
@@ -2409,17 +2409,17 @@ static const XtensaOpcodeOps core_ops[] = {
         .name = "abs",
         .translate = translate_abs,
     }, {
-        .name = "add",
+        .name = (const char * const[]) {
+            "add", "add.n", NULL,
+        },
         .translate = translate_add,
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
-        .name = "add.n",
-        .translate = translate_add,
-    }, {
-        .name = "addi",
-        .translate = translate_addi,
-    }, {
-        .name = "addi.n",
+        .name = (const char * const[]) {
+            "addi", "addi.n", NULL,
+        },
         .translate = translate_addi,
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "addmi",
         .translate = translate_addi,
@@ -2495,13 +2495,12 @@ static const XtensaOpcodeOps core_ops[] = {
         .translate = translate_bi,
         .par = (const uint32_t[]){TCG_COND_EQ},
     }, {
-        .name = "beqz",
-        .translate = translate_bz,
-        .par = (const uint32_t[]){TCG_COND_EQ},
-    }, {
-        .name = "beqz.n",
+        .name = (const char * const[]) {
+            "beqz", "beqz.n", NULL,
+        },
         .translate = translate_bz,
         .par = (const uint32_t[]){TCG_COND_EQ},
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "bf",
         .translate = translate_bp,
@@ -2559,13 +2558,12 @@ static const XtensaOpcodeOps core_ops[] = {
         .translate = translate_bi,
         .par = (const uint32_t[]){TCG_COND_NE},
     }, {
-        .name = "bnez",
-        .translate = translate_bz,
-        .par = (const uint32_t[]){TCG_COND_NE},
-    }, {
-        .name = "bnez.n",
+        .name = (const char * const[]) {
+            "bnez", "bnez.n", NULL,
+        },
         .translate = translate_bz,
         .par = (const uint32_t[]){TCG_COND_NE},
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "bnone",
         .translate = translate_bany,
@@ -2725,11 +2723,10 @@ static const XtensaOpcodeOps core_ops[] = {
         .translate = translate_nop,
         .op_flags = XTENSA_OP_PRIVILEGED,
     }, {
-        .name = "ill",
-        .op_flags = XTENSA_OP_ILL,
-    }, {
-        .name = "ill.n",
-        .op_flags = XTENSA_OP_ILL,
+        .name = (const char * const[]) {
+            "ill", "ill.n", NULL,
+        },
+        .op_flags = XTENSA_OP_ILL | XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "ipf",
         .translate = translate_nop,
@@ -2763,13 +2760,12 @@ static const XtensaOpcodeOps core_ops[] = {
         .translate = translate_l32e,
         .op_flags = XTENSA_OP_PRIVILEGED,
     }, {
-        .name = "l32i",
-        .translate = translate_ldst,
-        .par = (const uint32_t[]){MO_TEUL, false, false},
-    }, {
-        .name = "l32i.n",
+        .name = (const char * const[]) {
+            "l32i", "l32i.n", NULL,
+        },
         .translate = translate_ldst,
         .par = (const uint32_t[]){MO_TEUL, false, false},
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "l32r",
         .translate = translate_l32r,
@@ -2816,11 +2812,11 @@ static const XtensaOpcodeOps core_ops[] = {
         .name = "minu",
         .translate = translate_umin,
     }, {
-        .name = "mov",
-        .translate = translate_mov,
-    }, {
-        .name = "mov.n",
+        .name = (const char * const[]) {
+            "mov", "mov.n", NULL,
+        },
         .translate = translate_mov,
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "moveqz",
         .translate = translate_movcond,
@@ -3134,11 +3130,11 @@ static const XtensaOpcodeOps core_ops[] = {
         .name = "neg",
         .translate = translate_neg,
     }, {
-        .name = "nop",
-        .translate = translate_nop,
-    }, {
-        .name = "nop.n",
+        .name = (const char * const[]) {
+            "nop", "nop.n", NULL,
+        },
         .translate = translate_nop,
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "nsa",
         .translate = translate_nsa,
@@ -3202,21 +3198,18 @@ static const XtensaOpcodeOps core_ops[] = {
         .translate = translate_rer,
         .op_flags = XTENSA_OP_PRIVILEGED,
     }, {
-        .name = "ret",
+        .name = (const char * const[]) {
+            "ret", "ret.n", NULL,
+        },
         .translate = translate_ret,
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
-        .name = "ret.n",
-        .translate = translate_ret,
-    }, {
-        .name = "retw",
+        .name = (const char * const[]) {
+            "retw", "retw.n", NULL,
+        },
         .translate = translate_retw,
         .test_ill = test_ill_retw,
-        .op_flags = XTENSA_OP_UNDERFLOW,
-    }, {
-        .name = "retw.n",
-        .translate = translate_retw,
-        .test_ill = test_ill_retw,
-        .op_flags = XTENSA_OP_UNDERFLOW,
+        .op_flags = XTENSA_OP_UNDERFLOW | XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "rfdd",
         .op_flags = XTENSA_OP_ILL,
@@ -3742,17 +3735,12 @@ static const XtensaOpcodeOps core_ops[] = {
         .translate = translate_s32e,
         .op_flags = XTENSA_OP_PRIVILEGED,
     }, {
-        .name = "s32i",
-        .translate = translate_ldst,
-        .par = (const uint32_t[]){MO_TEUL, false, true},
-    }, {
-        .name = "s32i.n",
-        .translate = translate_ldst,
-        .par = (const uint32_t[]){MO_TEUL, false, true},
-    }, {
-        .name = "s32nb",
+        .name = (const char * const[]) {
+            "s32i", "s32i.n", "s32nb", NULL,
+        },
         .translate = translate_ldst,
         .par = (const uint32_t[]){MO_TEUL, false, true},
+        .op_flags = XTENSA_OP_NAME_ARRAY,
     }, {
         .name = "s32ri",
         .translate = translate_ldst,