diff options
| author | Timon Kruiper <timonkruiper@gmail.com> | 2022-12-27 16:05:07 +0100 |
|---|---|---|
| committer | Andrew Kaster <andrewdkaster@gmail.com> | 2022-12-29 19:32:20 -0700 |
| commit | 9554e5ca485461596a9e6a0981597fcfe00b0132 (patch) | |
| tree | 197e80f2d83633835a5edfec7757e5f976699dd6 | |
| parent | fb803e8025fb93dff200cb2e05849b3573a3f58b (diff) | |
| download | serenity-9554e5ca485461596a9e6a0981597fcfe00b0132.zip | |
Kernel/aarch64: Add Saved Program Status Register EL1 (SPSR_EL1)
| -rw-r--r-- | Kernel/Arch/aarch64/Registers.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Kernel/Arch/aarch64/Registers.h b/Kernel/Arch/aarch64/Registers.h index 8d9edf0a12..e5338cbcca 100644 --- a/Kernel/Arch/aarch64/Registers.h +++ b/Kernel/Arch/aarch64/Registers.h @@ -454,6 +454,54 @@ struct alignas(u64) SCR_EL3 { }; 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 { enum Mode : u16 { EL0t = 0b0000, |