From 7b9810ea4269fea04c3b95951fb279dc72db4132 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Mon, 19 Jul 2021 08:22:47 -1000
Subject: [PATCH] target/i386: Implement debug_check_breakpoint
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Return false for RF set, as we do in i386_tr_breakpoint_check.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/i386/tcg/tcg-cpu.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c
index e96ec9bbcc..238e3a9395 100644
--- a/target/i386/tcg/tcg-cpu.c
+++ b/target/i386/tcg/tcg-cpu.c
@@ -54,6 +54,17 @@ static void x86_cpu_synchronize_from_tb(CPUState *cs,
     cpu->env.eip = tb->pc - tb->cs_base;
 }
 
+#ifndef CONFIG_USER_ONLY
+static bool x86_debug_check_breakpoint(CPUState *cs)
+{
+    X86CPU *cpu = X86_CPU(cs);
+    CPUX86State *env = &cpu->env;
+
+    /* RF disables all architectural breakpoints. */
+    return !(env->eflags & RF_MASK);
+}
+#endif
+
 #include "hw/core/tcg-cpu-ops.h"
 
 static const struct TCGCPUOps x86_tcg_ops = {
@@ -66,6 +77,7 @@ static const struct TCGCPUOps x86_tcg_ops = {
     .tlb_fill = x86_cpu_tlb_fill,
 #ifndef CONFIG_USER_ONLY
     .debug_excp_handler = breakpoint_handler,
+    .debug_check_breakpoint = x86_debug_check_breakpoint,
 #endif /* !CONFIG_USER_ONLY */
 };