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[Qemu-devel] [PATCH v2 07/14] sm501: Fix device endianness


From: BALATON Zoltan
Subject: [Qemu-devel] [PATCH v2 07/14] sm501: Fix device endianness
Date: Sat, 25 Feb 2017 19:46:03 +0100

Signed-off-by: BALATON Zoltan <address@hidden>
---

v2: Split off small clean up to other patch

 hw/display/sm501.c          |  6 +++---
 hw/display/sm501_template.h | 23 ++++++++++++++---------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index b977094..2694081 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -849,7 +849,7 @@ static const MemoryRegionOps sm501_system_config_ops = {
         .min_access_size = 4,
         .max_access_size = 4,
     },
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static uint32_t sm501_palette_read(void *opaque, hwaddr addr)
@@ -1085,7 +1085,7 @@ static const MemoryRegionOps sm501_disp_ctrl_ops = {
         .min_access_size = 4,
         .max_access_size = 4,
     },
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 static uint64_t sm501_2d_engine_read(void *opaque, hwaddr addr,
@@ -1173,7 +1173,7 @@ static const MemoryRegionOps sm501_2d_engine_ops = {
         .min_access_size = 4,
         .max_access_size = 4,
     },
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
 /* draw line functions for all console modes */
diff --git a/hw/display/sm501_template.h b/hw/display/sm501_template.h
index 832ee61..6e56baf 100644
--- a/hw/display/sm501_template.h
+++ b/hw/display/sm501_template.h
@@ -64,10 +64,16 @@ static void glue(draw_line16_, PIXEL_NAME)(
     uint8_t r, g, b;
 
     do {
-        rgb565 = lduw_p(s);
-        r = ((rgb565 >> 11) & 0x1f) << 3;
-        g = ((rgb565 >>  5) & 0x3f) << 2;
-        b = ((rgb565 >>  0) & 0x1f) << 3;
+        rgb565 = lduw_le_p(s);
+#if defined(TARGET_WORDS_BIGENDIAN)
+        r = (rgb565 >> 8) & 0xf8;
+        g = (rgb565 >> 3) & 0xfc;
+        b = (rgb565 << 3) & 0xf8;
+#else
+        b = (rgb565 >> 8) & 0xf8;
+        g = (rgb565 >> 3) & 0xfc;
+        r = (rgb565 << 3) & 0xf8;
+#endif
         *(PIXEL_TYPE *)d = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
         s += 2;
         d += BPP;
@@ -80,15 +86,14 @@ static void glue(draw_line32_, PIXEL_NAME)(
     uint8_t r, g, b;
 
     do {
-        ldub_p(s);
 #if defined(TARGET_WORDS_BIGENDIAN)
+        r = s[0];
+        g = s[1];
+        b = s[2];
+#else
         r = s[1];
         g = s[2];
         b = s[3];
-#else
-        b = s[0];
-        g = s[1];
-        r = s[2];
 #endif
         *(PIXEL_TYPE *)d = glue(rgb_to_pixel, PIXEL_NAME)(r, g, b);
         s += 4;
-- 
2.7.4




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