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Kernel/aarch64: Add helper to get the current TTBR0_EL1

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Timon Kruiper 2023-01-24 19:25:45 +01:00 • committed by Andreas Kling
parent d9946c8e89
commit 9e90932bfb
1 changed files with 8 additions and 0 deletions
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8
Kernel/Arch/aarch64/ASM_wrapper.h
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@ -24,6 +24,14 @@ inline void set_ttbr0_el1(FlatPtr ttbr0_el1)
asm("msr ttbr0_el1, %[value]" ::[value] "r"(ttbr0_el1));
}
inline FlatPtr get_ttbr0_el1()
{
FlatPtr ttbr0_el1;
asm("mrs %[value], ttbr0_el1\n"
: [value] "=r"(ttbr0_el1));
return ttbr0_el1;
}
inline void set_sp_el1(FlatPtr sp_el1)
{
asm("msr sp_el1, %[value]" ::[value] "r"(sp_el1));