We will enter this function if we hit unrecoverable state.
Signed-off-by: Ralf Ramsauer <[email protected]>
---
inmates/lib/arm-common/include/inmate.h | 6 ++++++
inmates/lib/x86/inmate.h | 6 ++++++
2 files changed, 12 insertions(+)
diff --git a/inmates/lib/arm-common/include/inmate.h
b/inmates/lib/arm-common/include/inmate.h
index 921fde96..1dfbdfbb 100644
--- a/inmates/lib/arm-common/include/inmate.h
+++ b/inmates/lib/arm-common/include/inmate.h
@@ -88,6 +88,12 @@ static inline void cpu_relax(void)
asm volatile("" : : : "memory");
}
+static inline void __attribute__((noreturn)) spin_forever(void)
+{
+ for (;;)
+ asm volatile("wfi" : : : "memory");
+}
+
typedef void (*irq_handler_t)(unsigned int);
void gic_setup(irq_handler_t handler);
void gic_enable_irq(unsigned int irq);
diff --git a/inmates/lib/x86/inmate.h b/inmates/lib/x86/inmate.h
index 964a5435..f3c57d33 100644
--- a/inmates/lib/x86/inmate.h
+++ b/inmates/lib/x86/inmate.h
@@ -106,6 +106,12 @@ static inline void cpu_relax(void)
asm volatile("rep; nop" : : : "memory");
}
+static inline void __attribute__((noreturn)) spin_forever(void)
+{
+ for (;;)
+ asm volatile ("hlt" : : : "memory");
+}
+
static inline void outb(u8 v, u16 port)
{
asm volatile("outb %0,%1" : : "a" (v), "dN" (port));
--
2.17.0
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