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Kernel: Fix {read,write}_gs_ptr() for 64-bit addresses

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This commit is contained in:
Gunnar Beutner 2021-07-16 21:53:33 +02:00 • committed by Andreas Kling
parent 3ed29895e4
commit 741ca5477c
2 changed files with 7 additions and 12 deletions
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15
Kernel/Arch/x86/ASM_wrapper.h
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@ -62,25 +62,20 @@ ALWAYS_INLINE u16 get_gs()
}
#endif
ALWAYS_INLINE u32 read_gs_u32(u32 offset)
ALWAYS_INLINE FlatPtr read_gs_ptr(FlatPtr offset)
{
u32 val;
FlatPtr val;
asm volatile(
"movl %%gs:%a[off], %k[val]"
"mov %%gs:%a[off], %[val]"
: [val] "=r"(val)
: [off] "ir"(offset));
return val;
}
ALWAYS_INLINE FlatPtr read_gs_ptr(u32 offset)
{
return read_gs_u32(offset);
}
ALWAYS_INLINE void write_gs_u32(u32 offset, u32 val)
ALWAYS_INLINE void write_gs_ptr(u32 offset, FlatPtr val)
{
asm volatile(
"movl %k[val], %%gs:%a[off]" ::[off] "ir"(offset), [val] "ir"(val)
"mov %[val], %%gs:%a[off]" ::[off] "ir"(offset), [val] "ir"(val)
: "memory");
}