59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
#include "Framebuffer.h"
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#include "Init.h"
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#include "MemoryManager.h"
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#include "arch/MMU.h"
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#include "arch/Serial.h"
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extern u8 fb[1];
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extern "C" void _start()
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{
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Init::check_magic();
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Init::early_init();
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Serial::println("Hello, world!");
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Framebuffer::rect(0, 0, 200, 200, 0xFF00FF00);
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Serial::println(MMU::get_physical((u64)fb).has_error() ? "fb is not mapped" : "fb is mapped!!");
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const u64 address = 0xfffffffff8000000;
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u64 physical = MemoryManager::alloc_physical_page().release_value();
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auto rc = MMU::map(address, physical, MMU::ReadWrite);
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bool success = !rc.has_error();
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int flags;
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u8* ptr;
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if (success) Serial::println("Mapped page :)");
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else
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{
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Serial::println("Failed to map page");
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goto failure;
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}
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if (MMU::get_physical(address).release_value() == physical) Serial::println("Mapping is active ;)");
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else
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{
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Serial::println("Mapping is not active");
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goto failure;
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}
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flags = MMU::get_flags(address).release_value();
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if (flags & MMU::ReadWrite) Serial::println("Mapping is writable");
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if (flags & MMU::NoExecute) Serial::println("Mapping is not executable");
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ptr = (u8*)address;
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*ptr = 8;
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Serial::println("Can write to pointer");
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failure:
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for (;;)
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;
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} |