riscv vcpu implemention

Cargo.toml

@@ -22,3 +22,9 @@ memory_addr = "0.2.0"
 
 axaddrspace = { git = "https://github.com/arceos-hypervisor/axaddrspace.git" }
 axvcpu = { git = "https://github.com/arceos-hypervisor/axvcpu.git" }
+
+kspin = "0.1"
+lazyinit = "0.2"
+timer_list = "0.1.0"
+handler_table = "0.1"
+percpu = { version = "0.1.4", features = ["arm-el2"] }

README.md

@@ -2,4 +2,4 @@
 
 [![CI](https://github.com/arceos-hypervisor/riscv_vcpu/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/arceos-hypervisor/riscv_vcpu/actions/workflows/ci.yml)
 
-Definition of the vCPU structure and virtualization-related interface support for the AArch64 architecture.
+Definition of the vCPU structure and virtualization-related interface support for the riscv64 architecture.

src/consts.rs

@@ -0,0 +1,50 @@
+pub mod traps {
+    pub mod interrupt {
+        pub const VIRTUAL_SUPERVISOR_SOFT: usize = 1 << 2;
+        pub const VIRTUAL_SUPERVISOR_TIMER: usize = 1 << 6;
+        pub const VIRTUAL_SUPERVISOR_EXTERNAL: usize = 1 << 10;
+    }
+
+    pub mod irq {
+        /// `Interrupt` bit in `scause`
+        pub const INTC_IRQ_BASE: usize = 1 << (usize::BITS - 1);
+
+        /// Supervisor software interrupt in `scause`
+        #[allow(unused)]
+        pub const S_SOFT: usize = INTC_IRQ_BASE + 1;
+
+        /// Supervisor timer interrupt in `scause`
+        pub const S_TIMER: usize = INTC_IRQ_BASE + 5;
+
+        /// Supervisor external interrupt in `scause`
+        pub const S_EXT: usize = INTC_IRQ_BASE + 9;
+
+        /// The maximum number of IRQs.
+        pub const MAX_IRQ_COUNT: usize = 1024;
+
+        /// The timer IRQ number (supervisor timer interrupt in `scause`).
+        pub const TIMER_IRQ_NUM: usize = S_TIMER;
+    }
+
+    pub mod exception {
+        pub const INST_ADDR_MISALIGN: usize = 1 << 0;
+        pub const ILLEGAL_INST: usize = 1 << 2;
+        pub const BREAKPOINT: usize = 1 << 3;
+        pub const ENV_CALL_FROM_U_OR_VU: usize = 1 << 8;
+        pub const INST_PAGE_FAULT: usize = 1 << 12;
+        pub const LOAD_PAGE_FAULT: usize = 1 << 13;
+        pub const STORE_PAGE_FAULT: usize = 1 << 15;
+    }
+}
+
+pub mod timers {
+    pub const TICKS_PER_SEC: u64 = 100;
+    pub const NANOS_PER_SEC: u64 = 1_000_000_000;
+    pub const PERIODIC_INTERVAL_NANOS: u64 = NANOS_PER_SEC / TICKS_PER_SEC;
+    pub const TIMER_FREQUENCY: u64 = 10_000_000;
+    pub const NANOS_PER_TICK: u64 = NANOS_PER_SEC / TIMER_FREQUENCY;
+}
+
+pub mod stack {
+    pub const EXCEPTION_STACK_SIZE: usize = 8192;
+}