1 files changed, 97 insertions, 0 deletions
diff --git a/hw/i386/x86-cpu.c b/hw/i386/x86-cpu.c
new file mode 100644
index 0000000000..ab2920522d
--- /dev/null
+++ b/hw/i386/x86-cpu.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2019, 2024 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "qemu/osdep.h"
+#include "sysemu/whpx.h"
+#include "sysemu/cpu-timers.h"
+#include "trace.h"
+
+#include "hw/i386/x86.h"
+#include "target/i386/cpu.h"
+#include "hw/intc/i8259.h"
+#include "hw/irq.h"
+#include "sysemu/kvm.h"
+
+/* TSC handling */
+uint64_t cpu_get_tsc(CPUX86State *env)
+{
+    return cpus_get_elapsed_ticks();
+}
+
+/* IRQ handling */
+static void pic_irq_request(void *opaque, int irq, int level)
+{
+    CPUState *cs = first_cpu;
+    X86CPU *cpu = X86_CPU(cs);
+
+    trace_x86_pic_interrupt(irq, level);
+    if (cpu_is_apic_enabled(cpu->apic_state) && !kvm_irqchip_in_kernel() &&
+        !whpx_apic_in_platform()) {
+        CPU_FOREACH(cs) {
+            cpu = X86_CPU(cs);
+            if (apic_accept_pic_intr(cpu->apic_state)) {
+                apic_deliver_pic_intr(cpu->apic_state, level);
+            }
+        }
+    } else {
+        if (level) {
+            cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+        } else {
+            cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+        }
+    }
+}
+
+qemu_irq x86_allocate_cpu_irq(void)
+{
+    return qemu_allocate_irq(pic_irq_request, NULL, 0);
+}
+
+int cpu_get_pic_interrupt(CPUX86State *env)
+{
+    X86CPU *cpu = env_archcpu(env);
+    int intno;
+
+    if (!kvm_irqchip_in_kernel() && !whpx_apic_in_platform()) {
+        intno = apic_get_interrupt(cpu->apic_state);
+        if (intno >= 0) {
+            return intno;
+        }
+        /* read the irq from the PIC */
+        if (!apic_accept_pic_intr(cpu->apic_state)) {
+            return -1;
+        }
+    }
+
+    intno = pic_read_irq(isa_pic);
+    return intno;
+}
+
+DeviceState *cpu_get_current_apic(void)
+{
+    if (current_cpu) {
+        X86CPU *cpu = X86_CPU(current_cpu);
+        return cpu->apic_state;
+    } else {
+        return NULL;
+    }
+}