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authorGreg Kurz <gkurz@linux.vnet.ibm.com>2014-06-24 19:33:21 +0200
committerMichael S. Tsirkin <mst@redhat.com>2014-06-29 19:39:42 +0300
commitbf7663c4bd8f8f619d6dbb5780025d92ace250a8 (patch)
treec79ad18b6630f97ac5c0f3e9aec336f9496d76dc /qom
parent98ed8ecfc9dd9e22e4251251492f062dde32c3c4 (diff)
cpu: introduce CPUClass::virtio_is_big_endian()
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.maydell@linaro.org> Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'qom')
-rw-r--r--qom/cpu.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/qom/cpu.c b/qom/cpu.c
index fada2d4b92..b32dd0a562 100644
--- a/qom/cpu.c
+++ b/qom/cpu.c
@@ -196,6 +196,11 @@ static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)
return 0;
}
+bool target_words_bigendian(void);
+static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
+{
+ return target_words_bigendian();
+}
void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
int flags)
@@ -334,6 +339,7 @@ static void cpu_class_init(ObjectClass *klass, void *data)
k->write_elf64_note = cpu_common_write_elf64_note;
k->gdb_read_register = cpu_common_gdb_read_register;
k->gdb_write_register = cpu_common_gdb_write_register;
+ k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
dc->realize = cpu_common_realizefn;
/*
* Reason: CPUs still need special care by board code: wiring up