Bananymous/banan-os
1
1
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Kernel: Cleanup inline assembly accessing cpu specific data

Browse Source
This commit is contained in:
Bananymous
2026-05-02 18:29:07 +03:00
parent 23a0226f1b
commit d08f7b1dee
1 changed files with 8 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
kernel/include/kernel/Processor.h
View File

@@ -2,6 +2,7 @@
#include <BAN/Atomic.h> #include <BAN/Atomic.h>
#include <BAN/ForwardList.h> #include <BAN/ForwardList.h>
#include <BAN/Math.h>
#include <kernel/API/SharedPage.h> #include <kernel/API/SharedPage.h>
#include <kernel/Arch.h> #include <kernel/Arch.h>
@@ -139,11 +140,7 @@ namespace Kernel
static void disable_sse() static void disable_sse()
{ {
uintptr_t dummy; uintptr_t dummy;
#if ARCH(x86_64) asm volatile("mov %%cr0, %0; or $0x08, %0; mov %0, %%cr0" : "=r"(dummy));
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
} }
static void enable_sse() static void enable_sse()
@@ -168,35 +165,17 @@ namespace Kernel
} }
template<typename T> 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 value;
T result; asm volatile("mov %%gs:%a[offset], %[value]" : [value]"=r"(value) : [offset]"ir"(offset));
if constexpr(sizeof(T) == 8) return value;
__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
} }
template<typename T> 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") asm volatile("mov %[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
} }
private: private: