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Kernel/aarch64: Add Saved Program Status Register EL1 (SPSR_EL1)

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Timon Kruiper 2022-12-27 16:05:07 +01:00 • committed by Andrew Kaster
parent fb803e8025
commit 9554e5ca48
1 changed files with 48 additions and 0 deletions
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48
Kernel/Arch/aarch64/Registers.h
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@ -454,6 +454,54 @@ struct alignas(u64) SCR_EL3 {
}; };
static_assert(sizeof(SCR_EL3) == 8); static_assert(sizeof(SCR_EL3) == 8);
// C5.2.18 SPSR_EL1, Saved Program Status Register (EL1)
struct alignas(u64) SPSR_EL1 {
enum Mode : u8 {
EL0t = 0b0000,
EL1t = 0b0100,
EL1h = 0b0101
};
Mode M : 4;
int M_4 : 1 = 0;
int _reserved5 : 1 = 0;
int F : 1;
int I : 1;
int A : 1;
int D : 1;
int BTYPE : 2;
int SSBS : 1;
int _reserved13 : 7 = 0;
int IL : 1;
int SS : 1;
int PAN : 1;
int UA0 : 1;
int DIT : 1;
int TCO : 1;
int _reserved26 : 2 = 0;
int V : 1;
int C : 1;
int Z : 1;
int N : 1;
int _reserved32 : 32 = 0;
static inline void write(SPSR_EL1 spsr_el1)
{
asm("msr spsr_el1, %[value]" ::[value] "r"(spsr_el1));
}
static inline SPSR_EL1 read()
{
SPSR_EL1 spsr;
asm("mrs %[value], spsr_el1"
: [value] "=r"(spsr));
return spsr;
}
};
static_assert(sizeof(SPSR_EL1) == 8);
struct alignas(u64) SPSR_EL2 { struct alignas(u64) SPSR_EL2 {
enum Mode : u16 { enum Mode : u16 {
EL0t = 0b0000, EL0t = 0b0000,