On 13.06.14 13:22, Greg Kurz wrote:
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 <peter.mayd...@linaro.org> Signed-off-by: Greg Kurz <gk...@linux.vnet.ibm.com> --- 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 +
Why? Just do this from virtio code directly. Alex
