Heap and global allocator

.cargo/config.toml

@@ -8,10 +8,10 @@ runner = "speculos -m nanox --display=headless"
 runner = "speculos -m nanosp --display=headless"
 
 [target.stax]
-runner = "speculos --model stax"
+runner = "speculos --model stax --display=headless"
 
 [target.flex]
-runner = "speculos --model flex"
+runner = "speculos --model flex --display=headless"
 
 [unstable]
 build-std = ["core"]

.github/workflows/build_with_current_nightly.yml

@@ -13,7 +13,7 @@ jobs:
       image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder:latest
     strategy:
       matrix:
-        device: ["nanos", "nanox", "nanosplus"]
+        device: ["nanos", "nanox", "nanosplus", "stax", "flex"]
     steps:
       - name: update nightly toolchain
         run: |

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
     strategy:
       matrix:
-        target: ["nanos", "nanox", "nanosplus"]
+        target: ["nanos", "nanox", "nanosplus", "stax", "flex"]
         package: [include_gif, testmacro, ledger_secure_sdk_sys, ledger_device_sdk]
     steps:
       - name: Print Environment variables
@@ -64,7 +64,7 @@ jobs:
       image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
     strategy:
       matrix:
-        target: ["nanos", "nanox", "nanosplus"]
+        target: ["nanos", "nanox", "nanosplus", "stax", "flex"]
     steps:
       - name: Clone
         uses: actions/checkout@v4
@@ -91,7 +91,7 @@ jobs:
       image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-dev-tools:latest
     strategy:
       matrix:
-        target: ["nanos", "nanox", "nanosplus"]
+        target: ["nanos", "nanox", "nanosplus", "stax", "flex"]
     steps:
       - name: Force speculos update
         run: |

ledger_device_sdk/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ledger_device_sdk"
-version = "1.9.3"
-authors = ["yhql", "yogh333", "agrojean-ledger"]
+version = "1.10.0"
+authors = ["yhql", "yogh333", "agrojean-ledger", "kingofpayne"]
 edition = "2021"
 license.workspace = true
 repository.workspace = true
@@ -25,7 +25,5 @@ const-zero = "0.1.1"
 
 [features]
 speculos = []
-pre1_54 = []
-lib_bagl = []
-nbgl = []
 ccid = []
+heap = ["ledger_secure_sdk_sys/heap"]

ledger_device_sdk/src/io.rs

@@ -1,5 +1,6 @@
 #[cfg(target_os = "nanox")]
 use crate::ble;
+#[cfg(not(any(target_os = "stax", target_os = "flex")))]
 use ledger_secure_sdk_sys::buttons::{get_button_event, ButtonEvent, ButtonsState};
 use ledger_secure_sdk_sys::seph as sys_seph;
 use ledger_secure_sdk_sys::*;
@@ -104,6 +105,7 @@ pub struct Comm {
     pub rx: usize,
     pub tx: usize,
     pub event_pending: bool,
+    #[cfg(not(any(target_os = "stax", target_os = "flex")))]
     buttons: ButtonsState,
     /// Expected value for the APDU CLA byte.
     /// If defined, [`Comm`] will automatically reply with [`StatusWords::BadCla`] when an APDU
@@ -139,6 +141,7 @@ impl Comm {
             rx: 0,
             tx: 0,
             event_pending: false,
+            #[cfg(not(any(target_os = "stax", target_os = "flex")))]
             buttons: ButtonsState::new(),
             expected_cla: None,
         }

ledger_device_sdk/src/nbgl.rs

@@ -583,8 +583,3 @@ extern "C" fn io_seproxyhal_play_tune(tune_index: u8) {
         return;
     }
 }
-
-#[panic_handler]
-fn panic(_: &core::panic::PanicInfo) -> ! {
-    exit_app(1);
-}

ledger_secure_sdk_sys/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ledger_secure_sdk_sys"
-version = "1.3.1"
+version = "1.4.0"
 authors = ["yhql", "agrojean-ledger"]
 edition = "2021"
 license.workspace = true
@@ -11,3 +11,10 @@ description = "Bindings to Ledger C SDK"
 bindgen = "0.65.1"
 cc = "1.0.73"
 glob = "0.3.1"
+
+[dependencies]
+embedded-alloc = { version = "0.5.1", optional = true }
+critical-section = { version = "1.1.2", optional = true }
+
+[features]
+heap = ["dep:embedded-alloc", "dep:critical-section"]

ledger_secure_sdk_sys/src/c/src.c

@@ -14,6 +14,7 @@
 #endif
 
 extern void sample_main();
+extern void heap_init();
 
 struct SectionSrc;
 struct SectionDst;
@@ -329,6 +330,7 @@ int c_main(void) {
         check_audited_app();
     #endif // !defined(HAVE_BOLOS) && defined(HAVE_PENDING_REVIEW_SCREEN)
 
+        heap_init();
         sample_main();
       }
       CATCH(EXCEPTION_IO_RESET) {

ledger_secure_sdk_sys/src/lib.rs

@@ -4,6 +4,8 @@
 #![allow(non_snake_case)]
 
 use core::ffi::c_void;
+#[cfg(feature = "heap")]
+use core::mem::MaybeUninit;
 
 pub mod buttons;
 mod infos;
@@ -33,4 +35,41 @@ pub fn pic_rs_mut<T>(x: &mut T) -> &mut T {
     unsafe { &mut *ptr }
 }
 
+#[cfg(feature = "heap")]
+use critical_section::RawRestoreState;
+#[cfg(feature = "heap")]
+use embedded_alloc::Heap;
+
+#[cfg(feature = "heap")]
+#[global_allocator]
+static HEAP: Heap = Heap::empty();
+
+#[cfg(feature = "heap")]
+struct CriticalSection;
+#[cfg(feature = "heap")]
+critical_section::set_impl!(CriticalSection);
+
+/// Default empty implementation as we don't have concurrency.
+#[cfg(feature = "heap")]
+unsafe impl critical_section::Impl for CriticalSection {
+    unsafe fn acquire() -> RawRestoreState {}
+    unsafe fn release(_restore_state: RawRestoreState) {}
+}
+
+/// Initializes the heap memory for the global allocator.
+///
+/// The heap is stored in the stack, and has a fixed size.
+/// This method is called just before [sample_main].
+#[no_mangle]
+#[cfg(feature = "heap")]
+extern "C" fn heap_init() {
+    const HEAP_SIZE: usize = 8192;
+    static mut HEAP_MEM: [MaybeUninit<u8>; HEAP_SIZE] = [MaybeUninit::uninit(); HEAP_SIZE];
+    unsafe { HEAP.init(HEAP_MEM.as_ptr() as usize, HEAP_SIZE) }
+}
+
+#[no_mangle]
+#[cfg(not(feature = "heap"))]
+extern "C" fn heap_init() {}
+
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));