use the TCG code generator

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3944 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 87 insertions, 109 deletions

diff --git a/translate-all.c b/translate-all.c
index d8b91023e..9639612eb 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -29,22 +29,13 @@
 #include "cpu.h"
 #include "exec-all.h"
 #include "disas.h"
+#include "tcg.h"
 
-extern int dyngen_code(uint8_t *gen_code_buf,
-                       uint16_t *label_offsets, uint16_t *jmp_offsets,
-                       const uint16_t *opc_buf, const uint32_t *opparam_buf, const long *gen_labels);
-
-enum {
-#define DEF(s, n, copy_size) INDEX_op_ ## s,
-#include "opc.h"
-#undef DEF
-    NB_OPS,
-};
+/* code generation context */
+TCGContext tcg_ctx;
 
 uint16_t gen_opc_buf[OPC_BUF_SIZE];
-uint32_t gen_opparam_buf[OPPARAM_BUF_SIZE];
-long gen_labels[OPC_BUF_SIZE];
-int nb_gen_labels;
+TCGArg gen_opparam_buf[OPPARAM_BUF_SIZE];
 
 target_ulong gen_opc_pc[OPC_BUF_SIZE];
 uint8_t gen_opc_instr_start[OPC_BUF_SIZE];
@@ -59,86 +50,29 @@ uint32_t gen_opc_hflags[OPC_BUF_SIZE];
 
 int code_copy_enabled = 1;
 
-#ifdef DEBUG_DISAS
-static const char *op_str[] = {
-#define DEF(s, n, copy_size) #s,
-#include "opc.h"
-#undef DEF
-};
-
-static uint8_t op_nb_args[] = {
-#define DEF(s, n, copy_size) n,
-#include "opc.h"
-#undef DEF
-};
-
-static const unsigned short opc_copy_size[] = {
-#define DEF(s, n, copy_size) copy_size,
-#include "opc.h"
-#undef DEF
-};
-
-void dump_ops(const uint16_t *opc_buf, const uint32_t *opparam_buf)
-{
-    const uint16_t *opc_ptr;
-    const uint32_t *opparam_ptr;
-    int c, n, i;
-
-    opc_ptr = opc_buf;
-    opparam_ptr = opparam_buf;
-    for(;;) {
-        c = *opc_ptr++;
-        n = op_nb_args[c];
-        fprintf(logfile, "0x%04x: %s",
-                (int)(opc_ptr - opc_buf - 1), op_str[c]);
-        for(i = 0; i < n; i++) {
-            fprintf(logfile, " 0x%x", opparam_ptr[i]);
-        }
-        fprintf(logfile, "\n");
-        if (c == INDEX_op_end)
-            break;
-        opparam_ptr += n;
-    }
-}
-
+#ifdef CONFIG_PROFILER
+int64_t dyngen_tb_count1;
+int64_t dyngen_tb_count;
+int64_t dyngen_op_count;
+int64_t dyngen_old_op_count;
+int64_t dyngen_tcg_del_op_count;
+int dyngen_op_count_max;
+int64_t dyngen_code_in_len;
+int64_t dyngen_code_out_len;
+int64_t dyngen_interm_time;
+int64_t dyngen_code_time;
+int64_t dyngen_restore_count;
+int64_t dyngen_restore_time;
 #endif
 
-/* compute label info */
-static void dyngen_labels(long *gen_labels, int nb_gen_labels,
-                          uint8_t *gen_code_buf, const uint16_t *opc_buf)
-{
-    uint8_t *gen_code_ptr;
-    int c, i;
-    unsigned long gen_code_addr[OPC_BUF_SIZE];
-
-    if (nb_gen_labels == 0)
-        return;
-    /* compute the address of each op code */
-
-    gen_code_ptr = gen_code_buf;
-    i = 0;
-    for(;;) {
-        c = opc_buf[i];
-        gen_code_addr[i] =(unsigned long)gen_code_ptr;
-        if (c == INDEX_op_end)
-            break;
-        gen_code_ptr += opc_copy_size[c];
-        i++;
-    }
-
-    /* compute the address of each label */
-    for(i = 0; i < nb_gen_labels; i++) {
-        gen_labels[i] = gen_code_addr[gen_labels[i]];
-    }
-}
-
+/* XXX: suppress that */
 unsigned long code_gen_max_block_size(void)
 {
     static unsigned long max;
 
     if (max == 0) {
 #define DEF(s, n, copy_size) max = copy_size > max? copy_size : max;
-#include "opc.h"
+#include "tcg-opc.h"
 #undef DEF
         max *= OPC_MAX_SIZE;
     }
@@ -146,6 +80,13 @@ unsigned long code_gen_max_block_size(void)
     return max;
 }
 
+void cpu_gen_init(void)
+{
+    tcg_context_init(&tcg_ctx); 
+    tcg_set_frame(&tcg_ctx, TCG_AREG0, offsetof(CPUState, temp_buf),
+                  128 * sizeof(long));
+}
+
 /* return non zero if the very first instruction is invalid so that
    the virtual CPU can trigger an exception.
 
@@ -154,31 +95,53 @@ unsigned long code_gen_max_block_size(void)
 */
 int cpu_gen_code(CPUState *env, TranslationBlock *tb, int *gen_code_size_ptr)
 {
+    TCGContext *s = &tcg_ctx;
     uint8_t *gen_code_buf;
     int gen_code_size;
+#ifdef CONFIG_PROFILER
+    int64_t ti;
+#endif
+
+#ifdef CONFIG_PROFILER
+    dyngen_tb_count1++; /* includes aborted translations because of
+                           exceptions */
+    ti = profile_getclock();
+#endif
+    tcg_func_start(s);
 
     if (gen_intermediate_code(env, tb) < 0)
         return -1;
     
     /* generate machine code */
+    gen_code_buf = tb->tc_ptr;
     tb->tb_next_offset[0] = 0xffff;
     tb->tb_next_offset[1] = 0xffff;
-    gen_code_buf = tb->tc_ptr;
+    s->tb_next_offset = tb->tb_next_offset;
 #ifdef USE_DIRECT_JUMP
+    s->tb_jmp_offset = tb->tb_jmp_offset;
+    s->tb_next = NULL;
     /* the following two entries are optional (only used for string ops) */
+    /* XXX: not used ? */
     tb->tb_jmp_offset[2] = 0xffff;
     tb->tb_jmp_offset[3] = 0xffff;
-#endif
-    dyngen_labels(gen_labels, nb_gen_labels, gen_code_buf, gen_opc_buf);
-    
-    gen_code_size = dyngen_code(gen_code_buf, tb->tb_next_offset,
-#ifdef USE_DIRECT_JUMP
-                                tb->tb_jmp_offset,
 #else
-                                NULL,
+    s->tb_jmp_offset = NULL;
+    s->tb_next = tb->tb_next;
 #endif
-                                gen_opc_buf, gen_opparam_buf, gen_labels);
+
+#ifdef CONFIG_PROFILER
+    dyngen_tb_count++;
+    dyngen_interm_time += profile_getclock() - ti;
+    dyngen_code_time -= profile_getclock();
+#endif
+    gen_code_size = dyngen_code(s, gen_code_buf);
     *gen_code_size_ptr = gen_code_size;
+#ifdef CONFIG_PROFILER
+    dyngen_code_time += profile_getclock();
+    dyngen_code_in_len += tb->size;
+    dyngen_code_out_len += gen_code_size;
+#endif
+
 #ifdef DEBUG_DISAS
     if (loglevel & CPU_LOG_TB_OUT_ASM) {
         fprintf(logfile, "OUT: [size=%d]\n", *gen_code_size_ptr);
@@ -196,9 +159,17 @@ int cpu_restore_state(TranslationBlock *tb,
                       CPUState *env, unsigned long searched_pc,
                       void *puc)
 {
-    int j, c;
+    TCGContext *s = &tcg_ctx;
+    int j;
     unsigned long tc_ptr;
-    uint16_t *opc_ptr;
+#ifdef CONFIG_PROFILER
+    int64_t ti;
+#endif
+
+#ifdef CONFIG_PROFILER
+    ti = profile_getclock();
+#endif
+    tcg_func_start(s);
 
     if (gen_intermediate_code_pc(env, tb) < 0)
         return -1;
@@ -207,18 +178,19 @@ int cpu_restore_state(TranslationBlock *tb,
     tc_ptr = (unsigned long)tb->tc_ptr;
     if (searched_pc < tc_ptr)
         return -1;
-    j = 0;
-    opc_ptr = gen_opc_buf;
-    for(;;) {
-        c = *opc_ptr;
-        if (c == INDEX_op_end)
-            return -1;
-        tc_ptr += opc_copy_size[c];
-        if (searched_pc < tc_ptr)
-            break;
-        opc_ptr++;
-    }
-    j = opc_ptr - gen_opc_buf;
+
+    s->tb_next_offset = tb->tb_next_offset;
+#ifdef USE_DIRECT_JUMP
+    s->tb_jmp_offset = tb->tb_jmp_offset;
+    s->tb_next = NULL;
+#else
+    s->tb_jmp_offset = NULL;
+    s->tb_next = tb->tb_next;
+#endif
+    j = dyngen_code_search_pc(s, (uint8_t *)tc_ptr, 
+                              (void *)searched_pc); 
+    if (j < 0)
+        return -1;
     /* now find start of instruction before */
     while (gen_opc_instr_start[j] == 0)
         j--;
@@ -266,10 +238,11 @@ int cpu_restore_state(TranslationBlock *tb,
     }
 #elif defined(TARGET_PPC)
     {
-        int type;
+        int type, c;
         /* for PPC, we need to look at the micro operation to get the
            access type */
         env->nip = gen_opc_pc[j];
+        c = gen_opc_buf[j];
         switch(c) {
 #if defined(CONFIG_USER_ONLY)
 #define CASE3(op)\
@@ -315,5 +288,10 @@ int cpu_restore_state(TranslationBlock *tb,
     env->pc = gen_opc_pc[j];
     env->flags = gen_opc_hflags[j];
 #endif
+
+#ifdef CONFIG_PROFILER
+    dyngen_restore_time += profile_getclock() - ti;
+    dyngen_restore_count++;
+#endif
     return 0;
 }