If we want to support targets that can change endianness (modern PPC and
ARM for the moment), we need to add a per-CPU class method to be called
from the virtio code. The virtio_ prefix in the name is a hint for people
to avoid misusage (aka. anywhere but from the virtio code).
The default behaviour is to return the compile-time default target
endianness.
Suggested-by: Peter Maydell <address@hidden>
Signed-off-by: Greg Kurz <address@hidden>
---
include/qom/cpu.h | 10 ++++++++++
qom/cpu.c | 6 ++++++
2 files changed, 16 insertions(+)
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 4b352a2..30e8fe3 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -116,6 +116,7 @@ typedef struct CPUClass {
CPUUnassignedAccess do_unassigned_access;
void (*do_unaligned_access)(CPUState *cpu, vaddr addr,
int is_write, int is_user, uintptr_t retaddr);
+ bool (*virtio_is_big_endian)(CPUState *cpu);
int (*memory_rw_debug)(CPUState *cpu, vaddr addr,
uint8_t *buf, int len, bool is_write);
void (*dump_state)(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
@@ -548,6 +549,15 @@ void cpu_interrupt(CPUState *cpu, int mask);
#endif /* USER_ONLY */
+#ifndef CONFIG_USER_ONLY
+static inline bool cpu_virtio_is_big_endian(CPUState *cpu)
+{
+ CPUClass *cc = CPU_GET_CLASS(cpu);
+
+ return cc->virtio_is_big_endian(cpu);
+}
+#endif
+