hyperlight-common 0.17.0

Hyperlight's components common to host and guest.
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright 2025 The Hyperlight Authors.

#[cfg_attr(target_arch = "x86_64", path = "arch/amd64/layout.rs")]
#[cfg_attr(target_arch = "aarch64", path = "arch/aarch64/layout.rs")]
mod arch;

pub use arch::{
    SCRATCH_TOP_GPA, SCRATCH_TOP_GVA, SNAPSHOT_PT_GVA_MAX, SNAPSHOT_PT_GVA_MIN, io_page,
};

// offsets down from the top of scratch memory for various things
pub const SCRATCH_TOP_SIZE_OFFSET: u64 = 0x08;
pub const SCRATCH_TOP_ALLOCATOR_OFFSET: u64 = 0x10;
pub const SCRATCH_TOP_SNAPSHOT_PT_GPA_BASE_OFFSET: u64 = 0x18;
pub const SCRATCH_TOP_SNAPSHOT_GENERATION_OFFSET: u64 = 0x20;
pub const SCRATCH_TOP_LIBC_RNG_SEED_OFFSET: u64 = 0x28;
pub const SCRATCH_TOP_EXN_STACK_OFFSET: u64 = 0x30;

pub fn scratch_base_gpa(size: usize) -> u64 {
    (SCRATCH_TOP_GPA - size + 1) as u64
}
pub fn scratch_base_gva(size: usize) -> u64 {
    (SCRATCH_TOP_GVA - size + 1) as u64
}

/// Compute the minimum scratch region size needed for a sandbox.
pub use arch::min_scratch_size;