tcg: Introduce tcg_op_buf_count and tcg_op_buf_full

The method by which we count the number of ops emitted is going to change. Abstract that away into some inlines. Reviewed-by: Bastian Koppelmann <[email protected]> Signed-off-by: Richard Henderson <[email protected]>
fatenever · Feb 13, 2015 · fe700ad · fe700ad
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commit fe700ad
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Showing 19 changed files with 79 additions and 113 deletions.
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
@@ -2790,15 +2790,13 @@ static inline void gen_intermediate_code_internal(AlphaCPU *cpu,
     target_ulong pc_start;
     target_ulong pc_mask;
     uint32_t insn;
-    uint16_t *gen_opc_end;
     CPUBreakpoint *bp;
     int j, lj = -1;
     ExitStatus ret;
     int num_insns;
     int max_insns;
 
     pc_start = tb->pc;
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
 
     ctx.tb = tb;
     ctx.pc = pc_start;
@@ -2839,11 +2837,12 @@ static inline void gen_intermediate_code_internal(AlphaCPU *cpu,
             }
         }
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
-                while (lj < j)
+                while (lj < j) {
                     tcg_ctx.gen_opc_instr_start[lj++] = 0;
+                }
             }
             tcg_ctx.gen_opc_pc[lj] = ctx.pc;
             tcg_ctx.gen_opc_instr_start[lj] = 1;
@@ -2881,7 +2880,7 @@ static inline void gen_intermediate_code_internal(AlphaCPU *cpu,
            or exhaust instruction count, stop generation.  */
         if (ret == NO_EXIT
             && ((ctx.pc & pc_mask) == 0
-                || tcg_ctx.gen_opc_ptr >= gen_opc_end
+                || tcg_op_buf_full()
                 || num_insns >= max_insns
                 || singlestep
                 || ctx.singlestep_enabled)) {
@@ -2914,10 +2913,11 @@ static inline void gen_intermediate_code_internal(AlphaCPU *cpu,
     gen_tb_end(tb, num_insns);
 
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
-        while (lj <= j)
+        while (lj <= j) {
             tcg_ctx.gen_opc_instr_start[lj++] = 0;
+        }
     } else {
         tb->size = ctx.pc - pc_start;
         tb->icount = num_insns;

diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
@@ -10916,7 +10916,6 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu,
     CPUARMState *env = &cpu->env;
     DisasContext dc1, *dc = &dc1;
     CPUBreakpoint *bp;
-    uint16_t *gen_opc_end;
     int j, lj;
     target_ulong pc_start;
     target_ulong next_page_start;
@@ -10927,8 +10926,6 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu,
 
     dc->tb = tb;
 
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
-
     dc->is_jmp = DISAS_NEXT;
     dc->pc = pc_start;
     dc->singlestep_enabled = cs->singlestep_enabled;
@@ -10998,7 +10995,7 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu,
         }
 
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
                 while (lj < j) {
@@ -11048,7 +11045,7 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu,
          * ensures prefetch aborts occur at the right place.
          */
         num_insns++;
-    } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
+    } while (!dc->is_jmp && !tcg_op_buf_full() &&
              !cs->singlestep_enabled &&
              !singlestep &&
              !dc->ss_active &&
@@ -11119,7 +11116,7 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu,
     }
 #endif
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
         while (lj <= j) {
             tcg_ctx.gen_opc_instr_start[lj++] = 0;

diff --git a/target-arm/translate.c b/target-arm/translate.c
@@ -11025,7 +11025,6 @@ static inline void gen_intermediate_code_internal(ARMCPU *cpu,
     CPUARMState *env = &cpu->env;
     DisasContext dc1, *dc = &dc1;
     CPUBreakpoint *bp;
-    uint16_t *gen_opc_end;
     int j, lj;
     target_ulong pc_start;
     target_ulong next_page_start;
@@ -11046,8 +11045,6 @@ static inline void gen_intermediate_code_internal(ARMCPU *cpu,
 
     dc->tb = tb;
 
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
-
     dc->is_jmp = DISAS_NEXT;
     dc->pc = pc_start;
     dc->singlestep_enabled = cs->singlestep_enabled;
@@ -11182,7 +11179,7 @@ static inline void gen_intermediate_code_internal(ARMCPU *cpu,
             }
         }
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
                 while (lj < j)
@@ -11248,7 +11245,7 @@ static inline void gen_intermediate_code_internal(ARMCPU *cpu,
          * Also stop translation when a page boundary is reached.  This
          * ensures prefetch aborts occur at the right place.  */
         num_insns ++;
-    } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
+    } while (!dc->is_jmp && !tcg_op_buf_full() &&
              !cs->singlestep_enabled &&
              !singlestep &&
              !dc->ss_active &&
@@ -11368,7 +11365,7 @@ static inline void gen_intermediate_code_internal(ARMCPU *cpu,
     }
 #endif
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
         while (lj <= j)
             tcg_ctx.gen_opc_instr_start[lj++] = 0;

diff --git a/target-cris/translate.c b/target-cris/translate.c
@@ -3116,7 +3116,6 @@ gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
 {
     CPUState *cs = CPU(cpu);
     CPUCRISState *env = &cpu->env;
-    uint16_t *gen_opc_end;
     uint32_t pc_start;
     unsigned int insn_len;
     int j, lj;
@@ -3142,8 +3141,6 @@ gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
     dc->cpu = cpu;
     dc->tb = tb;
 
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
-
     dc->is_jmp = DISAS_NEXT;
     dc->ppc = pc_start;
     dc->pc = pc_start;
@@ -3207,7 +3204,7 @@ gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
         check_breakpoint(env, dc);
 
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
                 while (lj < j) {
@@ -3291,7 +3288,7 @@ gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
             break;
         }
     } while (!dc->is_jmp && !dc->cpustate_changed
-            && tcg_ctx.gen_opc_ptr < gen_opc_end
+            && !tcg_op_buf_full()
             && !singlestep
             && (dc->pc < next_page_start)
             && num_insns < max_insns);
@@ -3346,7 +3343,7 @@ gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
     gen_tb_end(tb, num_insns);
 
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
         while (lj <= j) {
             tcg_ctx.gen_opc_instr_start[lj++] = 0;
@@ -3361,8 +3358,8 @@ gen_intermediate_code_internal(CRISCPU *cpu, TranslationBlock *tb,
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
         log_target_disas(env, pc_start, dc->pc - pc_start,
                          env->pregs[PR_VR]);
-        qemu_log("\nisize=%d osize=%td\n",
-            dc->pc - pc_start, tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf);
+        qemu_log("\nisize=%d osize=%d\n",
+                 dc->pc - pc_start, tcg_op_buf_count());
     }
 #endif
 #endif

diff --git a/target-i386/translate.c b/target-i386/translate.c
@@ -7913,7 +7913,6 @@ static inline void gen_intermediate_code_internal(X86CPU *cpu,
     CPUX86State *env = &cpu->env;
     DisasContext dc1, *dc = &dc1;
     target_ulong pc_ptr;
-    uint16_t *gen_opc_end;
     CPUBreakpoint *bp;
     int j, lj;
     uint64_t flags;
@@ -7993,8 +7992,6 @@ static inline void gen_intermediate_code_internal(X86CPU *cpu,
     cpu_ptr1 = tcg_temp_new_ptr();
     cpu_cc_srcT = tcg_temp_local_new();
 
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
-
     dc->is_jmp = DISAS_NEXT;
     pc_ptr = pc_start;
     lj = -1;
@@ -8015,7 +8012,7 @@ static inline void gen_intermediate_code_internal(X86CPU *cpu,
             }
         }
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
                 while (lj < j)
@@ -8060,7 +8057,7 @@ static inline void gen_intermediate_code_internal(X86CPU *cpu,
             break;
         }
         /* if too long translation, stop generation too */
-        if (tcg_ctx.gen_opc_ptr >= gen_opc_end ||
+        if (tcg_op_buf_full() ||
             (pc_ptr - pc_start) >= (TARGET_PAGE_SIZE - 32) ||
             num_insns >= max_insns) {
             gen_jmp_im(pc_ptr - dc->cs_base);
@@ -8080,7 +8077,7 @@ static inline void gen_intermediate_code_internal(X86CPU *cpu,
 
     /* we don't forget to fill the last values */
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
         while (lj <= j)
             tcg_ctx.gen_opc_instr_start[lj++] = 0;

diff --git a/target-lm32/translate.c b/target-lm32/translate.c
@@ -1062,7 +1062,6 @@ void gen_intermediate_code_internal(LM32CPU *cpu,
     CPUState *cs = CPU(cpu);
     CPULM32State *env = &cpu->env;
     struct DisasContext ctx, *dc = &ctx;
-    uint16_t *gen_opc_end;
     uint32_t pc_start;
     int j, lj;
     uint32_t next_page_start;
@@ -1075,8 +1074,6 @@ void gen_intermediate_code_internal(LM32CPU *cpu,
     dc->num_watchpoints = cpu->num_watchpoints;
     dc->tb = tb;
 
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
-
     dc->is_jmp = DISAS_NEXT;
     dc->pc = pc_start;
     dc->singlestep_enabled = cs->singlestep_enabled;
@@ -1100,7 +1097,7 @@ void gen_intermediate_code_internal(LM32CPU *cpu,
         check_breakpoint(env, dc);
 
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
                 while (lj < j) {
@@ -1124,7 +1121,7 @@ void gen_intermediate_code_internal(LM32CPU *cpu,
         num_insns++;
 
     } while (!dc->is_jmp
-         && tcg_ctx.gen_opc_ptr < gen_opc_end
+         && !tcg_op_buf_full()
          && !cs->singlestep_enabled
          && !singlestep
          && (dc->pc < next_page_start)
@@ -1160,7 +1157,7 @@ void gen_intermediate_code_internal(LM32CPU *cpu,
     gen_tb_end(tb, num_insns);
 
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
         while (lj <= j) {
             tcg_ctx.gen_opc_instr_start[lj++] = 0;
@@ -1174,9 +1171,8 @@ void gen_intermediate_code_internal(LM32CPU *cpu,
     if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
         qemu_log("\n");
         log_target_disas(env, pc_start, dc->pc - pc_start, 0);
-        qemu_log("\nisize=%d osize=%td\n",
-            dc->pc - pc_start, tcg_ctx.gen_opc_ptr -
-            tcg_ctx.gen_opc_buf);
+        qemu_log("\nisize=%d osize=%d\n",
+                 dc->pc - pc_start, tcg_op_buf_count());
     }
 #endif
 }

diff --git a/target-m68k/translate.c b/target-m68k/translate.c
@@ -2980,7 +2980,6 @@ gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
     CPUState *cs = CPU(cpu);
     CPUM68KState *env = &cpu->env;
     DisasContext dc1, *dc = &dc1;
-    uint16_t *gen_opc_end;
     CPUBreakpoint *bp;
     int j, lj;
     target_ulong pc_start;
@@ -2993,8 +2992,6 @@ gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
 
     dc->tb = tb;
 
-    gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
-
     dc->env = env;
     dc->is_jmp = DISAS_NEXT;
     dc->pc = pc_start;
@@ -3026,7 +3023,7 @@ gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
                 break;
         }
         if (search_pc) {
-            j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+            j = tcg_op_buf_count();
             if (lj < j) {
                 lj++;
                 while (lj < j)
@@ -3041,7 +3038,7 @@ gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
         dc->insn_pc = dc->pc;
 	disas_m68k_insn(env, dc);
         num_insns++;
-    } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
+    } while (!dc->is_jmp && !tcg_op_buf_full() &&
              !cs->singlestep_enabled &&
              !singlestep &&
              (pc_offset) < (TARGET_PAGE_SIZE - 32) &&
@@ -3085,7 +3082,7 @@ gen_intermediate_code_internal(M68kCPU *cpu, TranslationBlock *tb,
     }
 #endif
     if (search_pc) {
-        j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
+        j = tcg_op_buf_count();
         lj++;
         while (lj <= j)
             tcg_ctx.gen_opc_instr_start[lj++] = 0;