From d83b1ea283b1cd11c5135b7e774ce4ef0d57d1e0 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Tue, 9 Mar 2021 13:23:01 -0500
Subject: [PATCH] tcg: Split out tcg_raise_tb_overflow

Allow other places in tcg to restart with a smaller tb.

Backports db6b7d0c6936cd209e3e8d95aea61ad29ceef5e6
---
 qemu/tcg/tcg.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/qemu/tcg/tcg.c b/qemu/tcg/tcg.c
index 1fce8bb2..6934af4e 100644
--- a/qemu/tcg/tcg.c
+++ b/qemu/tcg/tcg.c
@@ -275,6 +275,12 @@ static bool tcg_resolve_relocs(TCGContext *s)
     return true;
 }
 
+/* Signal overflow, starting over with fewer guest insns. */
+static void QEMU_NORETURN tcg_raise_tb_overflow(TCGContext *s)
+{
+    siglongjmp(s->jmp_trans, -2);
+}
+
 #define C_PFX1(P, A)                    P##A
 #define C_PFX2(P, A, B)                 P##A##_##B
 #define C_PFX3(P, A, B, C)              P##A##_##B##_##C
@@ -648,8 +654,7 @@ static TCGTemp *tcg_temp_alloc(TCGContext *s)
     int n = s->nb_temps++;
 
     if (n >= TCG_MAX_TEMPS) {
-        /* Signal overflow, starting over with fewer guest insns. */
-        siglongjmp(s->jmp_trans, -2);
+        tcg_raise_tb_overflow(s);
     }
     return memset(&s->temps[n], 0, sizeof(TCGTemp));
 }