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8c04788793
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8c04788793 | |||
c5476115df | |||
b93a208f22 | |||
98a55b2c13 | |||
3248041aef |
@ -13,7 +13,7 @@ namespace CPU
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[[noreturn]] void efficient_halt();
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void idle_loop();
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[[noreturn]] void idle_loop();
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void switch_kernel_stack(u64 top);
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@ -430,7 +430,7 @@ namespace CPU
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goto loop; // Safeguard: if we ever wake up, start our low-power rest again
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}
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void idle_loop()
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[[noreturn]] void idle_loop()
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{
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asm volatile("sti");
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loop:
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@ -1,3 +1,4 @@
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#pragma once
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#include <luna/Types.h>
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struct Registers // Saved CPU registers for x86-64
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23
luna/include/luna/Stack.h
Normal file
23
luna/include/luna/Stack.h
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@ -0,0 +1,23 @@
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#pragma once
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#include <luna/Types.h>
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struct Stack
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{
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Stack(u64 base, usize bytes);
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u64 bottom()
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{
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return m_base;
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}
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u64 top();
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usize bytes()
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{
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return m_bytes;
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}
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private:
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u64 m_base;
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usize m_bytes;
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};
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@ -62,11 +62,14 @@ void Bitmap::clear_region(usize start, usize bits, bool value)
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expect(initialized(), "Bitmap was never initialized");
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expect((start + bits) <= size(), "Bitmap clear out of range");
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if (!bits) return;
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// Set individual bits while not on a byte boundary.
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while ((start % 8) && bits--)
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while ((start % 8) && bits)
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{
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set(start, value);
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start++;
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bits--;
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}
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// Clear out the rest in bytes.
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10
luna/src/Stack.cpp
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10
luna/src/Stack.cpp
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@ -0,0 +1,10 @@
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#include <luna/Stack.h>
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Stack::Stack(u64 base, usize bytes) : m_base(base), m_bytes(bytes)
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{
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}
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u64 Stack::top()
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{
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return (m_base + m_bytes) - sizeof(void*);
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}
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