CI Attempt

.gitea/workflows/build.yml

@@ -0,0 +1,33 @@
+name: 'CI'
+on:
+    push:
+        branches:
+          - master
+
+# Jobs
+jobs:
+    # Test Project
+    test:
+        strategy:
+            fail-fast: false
+            matrix:
+                arch:
+                  - AMD64
+                  - ARM64
+        name: Test
+        runs-on: ${{ startsWith(matrix.arch, 'ARM') && 'raspberry-pi' || 'ubuntu-latest' }}
+        steps:
+          - name: Checkout Repository
+            uses: actions/checkout@v4
+          # Dependencies
+          - name: Install Dependencies
+            run: ./scripts/install-dependencies.sh
+          # Build
+          - name: Build
+            run: ./example/build.sh
+          # Test
+          - name: Test (Pipe-Based)
+            run: MCPI_USE_PIPE_TRAMPOLINE=1 ./example/run.sh
+          - name: Test (Syscall-Based)
+            run: ./example/run.sh
+            if: ${{ ! startsWith(matrix.arch, 'ARM') }}

README.md

@@ -3,7 +3,7 @@ This is a simple program allowing ARM32 code to easily call "native" code.
 
 By running an ARM32 program inside this runtime, it gains the ability to call `raw_trampoline()`. This function copies its arguments and passes them to the "host" code.
 
-The runtime also automatically uses QEMU on x86_64 systems.
+The runtime also automatically uses QEMU on non-ARM systems.
 
 ## Terminology
 - "Guest" code is the main ARM32 program. It is running inside the runtime.

example/build.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 set -e
+cd "$(dirname "$0")"
 
 # Run Script
 RUN="$(pwd)/run.sh"
@@ -10,6 +11,7 @@ out() {
 }
 out '#!/bin/sh'
 out 'set -e'
+out 'cd "$(dirname "$0")"'
 chmod +x "${RUN}"
 
 # Create Build Directory

example/guest/src/example.c

@@ -16,6 +16,8 @@ void run(uint32_t cmd, const char *str) {
 // Main
 #define INFO(str) fprintf(stderr, "==== %s ====\n", str)
 int main() {
+    // Check Trampoline Type
+    fprintf(stderr, "Using Pipe-Based Trampoline: %i\n", is_trampoline_pipe_based());
     // Normal Calls
     INFO("Testing Normal Trampoline Calls");
     run(0, "Hello World!");

lib/include/trampoline/types.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <stdint.h>
+#include <stdlib.h>
 
 // C++ Support
 #ifdef __cplusplus
@@ -30,11 +31,13 @@ typedef trampoline_raw_t *trampoline_t;
 #endif
 
 // Environmental Variables
-#ifdef __cplusplus
+#pragma GCC diagnostic push
-#define ENV(name, ...) constexpr const char *name##_ENV = #name;
+#pragma GCC diagnostic ignored "-Wunused-variable"
+#define ENV(name, ...) static const char *name##_ENV = #name;
 #include "env-list.h"
 #undef ENV
-#endif
+#pragma GCC diagnostic pop
+#define is_trampoline_pipe_based() (getenv(MCPI_USE_PIPE_TRAMPOLINE_ENV) != NULL)
 
 // Call Trampoline From Guest Code
 #ifndef MCPI_BUILD_RUNTIME

lib/src/syscall.cpp

@@ -5,7 +5,7 @@
 
 // Check
 bool SyscallTrampoline::should_use() {
-    return getenv(MCPI_USE_PIPE_TRAMPOLINE_ENV) == nullptr;
+    return !is_trampoline_pipe_based();
 }
 
 // Call

scripts/install-dependencies.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+
+apt-get update
+apt-get install -y --no-install-recommends \
+    cmake \
+    ninja-build \
+    gcc g++ \
+    python3 \
+    python3-venv \
+    python3-tomli \
+    libglib2.0-dev

src/main.cpp

@@ -16,7 +16,7 @@ int main(int argc, char *argv[]) {
     // Create Implementation
     Implementation *impl = new PipeImplementation;
 #ifdef MCPI_HAS_QEMU
-    if (getenv(MCPI_USE_PIPE_TRAMPOLINE_ENV) == nullptr) {
+    if (!is_trampoline_pipe_based()) {
         delete impl;
         impl = new SyscallImplementation;
     }