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Build rust guests without hyperlight-libc #1505

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Merged
ludfjig merged 1 commit into from
Jun 5, 2026
+12 −146
Merged

Build rust guests without hyperlight-libc #1505

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10 changes: 7 additions & 3 deletions src/hyperlight_guest_bin/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,8 @@ fn _panic_handler(info: &core::panic::PanicInfo) -> ! {

unsafe extern "C" {
fn hyperlight_main();

#[cfg(feature = "libc")]
fn srand(seed: u32);
}

Expand All @@ -222,7 +224,7 @@ core::arch::global_asm!(
/// user initialisation
pub(crate) extern "C" fn generic_init(
peb_address: u64,
seed: u64,
_seed: u64,
ops: u64,
max_log_level: u64,
) -> u64 {
Expand All @@ -248,11 +250,13 @@ pub(crate) extern "C" fn generic_init(
#[cfg(feature = "trace_guest")]
let guest_start_tsc = hyperlight_guest_tracing::invariant_tsc::read_tsc();

#[cfg(feature = "libc")]
unsafe {
let srand_seed = (((peb_address << 8) ^ (seed >> 4)) >> 32) as u32;
// Set the seed for the random number generator for C code using rand;
let srand_seed = (((peb_address << 8) ^ (_seed >> 4)) >> 32) as u32;
srand(srand_seed);
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}

unsafe {
OS_PAGE_SIZE = ops as u32;
}

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142 changes: 2 additions & 140 deletions src/tests/rust_guests/Cargo.lock
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2 changes: 1 addition & 1 deletion src/tests/rust_guests/dummyguest/Cargo.toml
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Expand Up @@ -5,7 +5,7 @@ edition = "2021"


[dependencies]
hyperlight-guest-bin = { path = "../../../hyperlight_guest_bin" }
hyperlight-guest-bin = { path = "../../../hyperlight_guest_bin", default-features = false }
hyperlight-common = { path = "../../../hyperlight_common", default-features = false }

[features]
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2 changes: 1 addition & 1 deletion src/tests/rust_guests/simpleguest/Cargo.toml
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Expand Up @@ -5,7 +5,7 @@ edition = "2021"

[dependencies]
hyperlight-guest = { path = "../../../hyperlight_guest" }
hyperlight-guest-bin = { path = "../../../hyperlight_guest_bin" }
hyperlight-guest-bin = { path = "../../../hyperlight_guest_bin", default-features = false, features = ["macros"] }
hyperlight-common = { path = "../../../hyperlight_common", default-features = false }
hyperlight-guest-tracing = { path = "../../../hyperlight_guest_tracing" }
log = {version = "0.4", default-features = false }
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2 changes: 1 addition & 1 deletion src/tests/rust_guests/witguest/Cargo.toml
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Expand Up @@ -5,7 +5,7 @@ edition = "2021"

[dependencies]
hyperlight-guest = { path = "../../../hyperlight_guest" }
hyperlight-guest-bin = { path = "../../../hyperlight_guest_bin" }
hyperlight-guest-bin = { path = "../../../hyperlight_guest_bin", default-features = false }
hyperlight-common = { path = "../../../hyperlight_common", default-features = false }
hyperlight-component-macro = { path = "../../../hyperlight_component_macro" }
spin = "0.10.0"
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