From 15fa08f8451babc88d733bd411d4c94976f9d0f8 Mon Sep 17 00:00:00 2001
From: Richard Henderson
Date: Thu, 2 Nov 2017 15:19:14 +0100
Subject: tcg: Dynamically allocate TCGOps

With no fixed array allocation, we can't overflow a buffer.
This will be important as optimizations related to host vectors
may expand the number of ops used.

Use QTAILQ to link the ops together.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/translate-a64.c    |  2 +-
 target/arm/translate.c        |  2 +-
 target/arm/translate.h        | 10 +++++-----
 target/cris/translate.c       |  2 --
 target/lm32/translate.c       |  2 --
 target/microblaze/translate.c |  4 ----
 6 files changed, 7 insertions(+), 15 deletions(-)

(limited to 'target')

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 460bab5987..ba94f7d045 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -11290,8 +11290,8 @@ static void aarch64_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
 {
     DisasContext *dc = container_of(dcbase, DisasContext, base);
 
-    dc->insn_start_idx = tcg_op_buf_count();
     tcg_gen_insn_start(dc->pc, 0, 0);
+    dc->insn_start = tcg_last_op();
 }
 
 static bool aarch64_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cpu,
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 46c25ae2c1..c690658493 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -12096,10 +12096,10 @@ static void arm_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
 {
     DisasContext *dc = container_of(dcbase, DisasContext, base);
 
-    dc->insn_start_idx = tcg_op_buf_count();
     tcg_gen_insn_start(dc->pc,
                        (dc->condexec_cond << 4) | (dc->condexec_mask >> 1),
                        0);
+    dc->insn_start = tcg_last_op();
 }
 
 static bool arm_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cpu,
diff --git a/target/arm/translate.h b/target/arm/translate.h
index 410ba79c0d..cd7313ace7 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -66,8 +66,8 @@ typedef struct DisasContext {
     bool ss_same_el;
     /* Bottom two bits of XScale c15_cpar coprocessor access control reg */
     int c15_cpar;
-    /* TCG op index of the current insn_start.  */
-    int insn_start_idx;
+    /* TCG op of the current insn_start.  */
+    TCGOp *insn_start;
 #define TMP_A64_MAX 16
     int tmp_a64_count;
     TCGv_i64 tmp_a64[TMP_A64_MAX];
@@ -117,9 +117,9 @@ static void disas_set_insn_syndrome(DisasContext *s, uint32_t syn)
     syn >>= ARM_INSN_START_WORD2_SHIFT;
 
     /* We check and clear insn_start_idx to catch multiple updates.  */
-    assert(s->insn_start_idx != 0);
-    tcg_set_insn_param(s->insn_start_idx, 2, syn);
-    s->insn_start_idx = 0;
+    assert(s->insn_start != NULL);
+    tcg_set_insn_param(s->insn_start, 2, syn);
+    s->insn_start = NULL;
 }
 
 /* is_jmp field values */
diff --git a/target/cris/translate.c b/target/cris/translate.c
index 74822ed31f..f51a731db9 100644
--- a/target/cris/translate.c
+++ b/target/cris/translate.c
@@ -3297,8 +3297,6 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
         qemu_log("--------------\n");
         qemu_log("IN: %s\n", lookup_symbol(pc_start));
         log_target_disas(cs, pc_start, dc->pc - pc_start);
-        qemu_log("\nisize=%d osize=%d\n",
-                 dc->pc - pc_start, tcg_op_buf_count());
         qemu_log_unlock();
     }
 #endif
diff --git a/target/lm32/translate.c b/target/lm32/translate.c
index b8b2b13e36..2e1c5e6d01 100644
--- a/target/lm32/translate.c
+++ b/target/lm32/translate.c
@@ -1156,8 +1156,6 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
         qemu_log_lock();
         qemu_log("\n");
         log_target_disas(cs, pc_start, dc->pc - pc_start);
-        qemu_log("\nisize=%d osize=%d\n",
-                 dc->pc - pc_start, tcg_op_buf_count());
         qemu_log_unlock();
     }
 #endif
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index e7b5597c46..7628b0e25b 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -1808,11 +1808,7 @@ void gen_intermediate_code(CPUState *cs, struct TranslationBlock *tb)
         && qemu_log_in_addr_range(pc_start)) {
         qemu_log_lock();
         qemu_log("--------------\n");
-#if DISAS_GNU
         log_target_disas(cs, pc_start, dc->pc - pc_start);
-#endif
-        qemu_log("\nisize=%d osize=%d\n",
-                 dc->pc - pc_start, tcg_op_buf_count());
         qemu_log_unlock();
     }
 #endif
-- 
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