Sinipelto/banan-os
1
0
Fork 0
forked from Bananymous/banan-os
Code Pull Requests Activity

Kernel/LibC: Use builtin functions over inline asm

Browse Source 
Getting flags and saving/restoring sse state and reading TSC can be done
using compiler builtins
This commit is contained in:
Bananymous
2026-01-09 15:19:19 +02:00
parent a9ceab0415
commit 74f70ae4bd
5 changed files with 14 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
kernel/kernel/Thread.cpp
View File

@@ -908,9 +908,9 @@ namespace Kernel
void Thread::save_sse()
{
#if ARCH(x86_64)
asm volatile("fxsave64 %0" :: "m"(m_sse_storage));
__builtin_ia32_fxsave64(m_sse_storage);
#elif ARCH(i686)
asm volatile("fxsave %0" :: "m"(m_sse_storage));
__builtin_ia32_fxsave(m_sse_storage);
#else
#error
#endif
@@ -919,9 +919,9 @@ namespace Kernel
void Thread::load_sse()
{
#if ARCH(x86_64)
asm volatile("fxrstor64 %0" :: "m"(m_sse_storage));
__builtin_ia32_fxrstor64(m_sse_storage);
#elif ARCH(i686)
asm volatile("fxrstor %0" :: "m"(m_sse_storage));
__builtin_ia32_fxrstor(m_sse_storage);
#else
#error
#endif