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Kernel: Cleanup inline assembly accessing cpu specific data

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Bananymous
2026-05-02 18:29:07 +03:00
parent 23a0226f1b
commit d08f7b1dee
1 changed files with 8 additions and 29 deletions
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37
kernel/include/kernel/Processor.h
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@@ -2,6 +2,7 @@
#include <BAN/Atomic.h>
#include <BAN/ForwardList.h>
#include <BAN/Math.h>
#include <kernel/API/SharedPage.h>
#include <kernel/Arch.h>
@@ -139,11 +140,7 @@ namespace Kernel
static void disable_sse()
{
uintptr_t dummy;
#if ARCH(x86_64)
asm volatile("movq %%cr0, %0; orq $0x08, %0; movq %0, %%cr0" : "=r"(dummy));
#elif ARCH(i686)
asm volatile("movl %%cr0, %0; orl $0x08, %0; movl %0, %%cr0" : "=r"(dummy));
#endif
asm volatile("mov %%cr0, %0; or $0x08, %0; mov %0, %%cr0" : "=r"(dummy));
}
static void enable_sse()
@@ -168,35 +165,17 @@ namespace Kernel
}
template<typename T>
static T read_gs_sized(uintptr_t offset) requires(sizeof(T) <= 8)
static T read_gs_sized(uintptr_t offset) requires(sizeof(T) <= 8 && BAN::Math::is_power_of_two(sizeof(T)))
{
#define __ASM_INPUT(operation) asm volatile(operation " %%gs:%a[offset], %[result]" : [result]"=r"(result) : [offset]"ir"(offset))
T result;
if constexpr(sizeof(T) == 8)
__ASM_INPUT("movq");
if constexpr(sizeof(T) == 4)
__ASM_INPUT("movl");
if constexpr(sizeof(T) == 2)
__ASM_INPUT("movw");
if constexpr(sizeof(T) == 1)
__ASM_INPUT("movb");
return result;
#undef __ASM_INPUT
T value;
asm volatile("mov %%gs:%a[offset], %[value]" : [value]"=r"(value) : [offset]"ir"(offset));
return value;
}
template<typename T>
static void write_gs_sized(uintptr_t offset, T value) requires(sizeof(T) <= 8)
static void write_gs_sized(uintptr_t offset, T value) requires(sizeof(T) <= 8 && BAN::Math::is_power_of_two(sizeof(T)))
{
#define __ASM_INPUT(operation) asm volatile(operation " %[value], %%gs:%a[offset]" :: [value]"r"(value), [offset]"ir"(offset) : "memory")
if constexpr(sizeof(T) == 8)
__ASM_INPUT("movq");
if constexpr(sizeof(T) == 4)
__ASM_INPUT("movl");
if constexpr(sizeof(T) == 2)
__ASM_INPUT("movw");
if constexpr(sizeof(T) == 1)
__ASM_INPUT("movb");
#undef __ASM_INPUT
asm volatile("mov %[value], %%gs:%a[offset]" :: [value]"r"(value), [offset]"ir"(offset) : "memory");
}
private: