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Kernel: Fix 32 bit target compile and runtime

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Apparently I have to reload stack in the fork trampoline. Not sure why
or why not on x86_64. Also sse builtins did not compile
This commit is contained in:
Bananymous
2026-01-09 17:05:34 +02:00
parent 74f70ae4bd
commit 12489a4c6b
4 changed files with 12 additions and 5 deletions
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2
kernel/kernel/Processor.cpp
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@@ -102,7 +102,7 @@ namespace Kernel
asm volatile("wrmsr" :: "d"(val_hi), "a"(val_lo), "c"(MSR_IA32_GS_BASE));
}
#elif ARCH(i686)
asm volatile("movw %0, %%gs" :: "r"(0x28));
asm volatile("movw %0, %%gs" :: "r"(static_cast<uint16_t>(0x28)));
#endif
#if ARCH(x86_64)

6
kernel/kernel/Thread.cpp
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@@ -910,7 +910,8 @@ namespace Kernel
#if ARCH(x86_64)
__builtin_ia32_fxsave64(m_sse_storage);
#elif ARCH(i686)
__builtin_ia32_fxsave(m_sse_storage);
// no idea why the builtin don't work
asm volatile("fxsave %0" :: "m"(m_sse_storage));
#else
#error
#endif
@@ -921,7 +922,8 @@ namespace Kernel
#if ARCH(x86_64)
__builtin_ia32_fxrstor64(m_sse_storage);
#elif ARCH(i686)
__builtin_ia32_fxrstor(m_sse_storage);
// no idea why the builtin don't work
asm volatile("fxrstor %0" :: "m"(m_sse_storage));
#else
#error
#endif