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Fix gcc2 comparison, and only align if not aligned (8 - 0)

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Fredrik Holmqvist
2018-08-03 15:31:03 +02:00
parent 04cbc2588e
commit 1368eabbff
1 changed files with 2 additions and 2 deletions
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src/system/boot/platform/generic/video_splash.cpp
+2 -2
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@@ -89,12 +89,12 @@ video_display_splash(addr_t frameBuffer)
// Limit area to clear to estimated screen area // Limit area to clear to estimated screen area
// UEFI can happily report a >256M framebuffer // UEFI can happily report a >256M framebuffer
addr_t size = min_c(gKernelArgs.frame_buffer.width addr_t size = min_c(gKernelArgs.frame_buffer.width
* gKernelArgs.frame_buffer.height * 4, * gKernelArgs.frame_buffer.height * 4u,
gKernelArgs.frame_buffer.physical_buffer.size); gKernelArgs.frame_buffer.physical_buffer.size);
if (size >= 64) { if (size >= 64) {
// Align writes // Align writes
for (addr_t align = 8 - (frameBuffer & 7); pos < align; pos++) for (addr_t align = (8 - (frameBuffer & 7)) & 7; pos < align; pos++)
*(char*)(frameBuffer + pos) = 0; *(char*)(frameBuffer + pos) = 0;
// Write eight bytes, many many times, but not too many // Write eight bytes, many many times, but not too many
for (addr_t alignSize = size - 8; pos < alignSize; pos +=8) { for (addr_t alignSize = size - 8; pos < alignSize; pos +=8) {