[Qemu-devel] [RFC PATCH 04/17] hw/display: Declare device little or big endian

[Tony Nguyen]

For each device declared with DEVICE_NATIVE_ENDIAN, find the set of
targets from the set of target/hw/*/device.o.

If the set of targets are all little or all big endian, re-declare
the device endianness as DEVICE_LITTLE_ENDIAN or DEVICE_BIG_ENDIAN
respectively.

This *naive* deduction may result in genuinely native endian devices
being incorrectly declared as little or big endian, but should not
introduce regressions for current targets.

These devices should be re-declared as DEVICE_NATIVE_ENDIAN if 1) it
has a new target with an opposite endian or 2) someone informed knows
better =)

Signed-off-by: Tony Nguyen <address@hidden>
---
 hw/display/pl110.c    | 2 +-
 hw/display/tc6393xb.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/display/pl110.c b/hw/display/pl110.c
index c2991a28d2..3831505165 100644
--- a/hw/display/pl110.c
+++ b/hw/display/pl110.c
@@ -473,7 +473,7 @@ static void pl110_write(void *opaque, hwaddr offset,
 static const MemoryRegionOps pl110_ops = {
     .read = pl110_read,
     .write = pl110_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static void pl110_mux_ctrl_set(void *opaque, int line, int level)
diff --git a/hw/display/tc6393xb.c b/hw/display/tc6393xb.c
index 49a676d1b0..6a9477a0c7 100644
--- a/hw/display/tc6393xb.c
+++ b/hw/display/tc6393xb.c
@@ -549,7 +549,7 @@ TC6393xbState *tc6393xb_init(MemoryRegion *sysmem, uint32_t 
base, qemu_irq irq)
     static const MemoryRegionOps tc6393xb_ops = {
         .read = tc6393xb_readb,
         .write = tc6393xb_writeb,
-        .endianness = DEVICE_NATIVE_ENDIAN,
+        .endianness = DEVICE_LITTLE_ENDIAN,
         .impl = {
             .min_access_size = 1,
             .max_access_size = 1,
-- 
2.23.0