Setup project skeleton

9 files changed, 276 insertions, 0 deletions

diff --git a/src/endian/CMakeLists.txt b/src/endian/CMakeLists.txt
new file mode 100644
index 0000000..01a7e98
--- /dev/null
+++ b/src/endian/CMakeLists.txt
@@ -0,0 +1,19 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+add_library(endian)
+add_subdirectory(src)
+target_include_directories(endian PUBLIC include PRIVATE private_include)
diff --git a/src/endian/include/endian.h b/src/endian/include/endian.h
new file mode 100644
index 0000000..7cd0aae
--- /dev/null
+++ b/src/endian/include/endian.h
@@ -0,0 +1,46 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ENDIAN_H
+#define ENDIAN_H
+
+#include <stdint.h>
+
+struct endian_le16
+{
+    uint8_t v[sizeof (uint16_t)];
+};
+
+struct endian_le32
+{
+    uint8_t v[sizeof (uint32_t)];
+};
+
+struct endian_le64
+{
+    uint8_t v[sizeof (uint64_t)];
+};
+
+uint16_t endian_from_le16(const struct endian_le16 *v);
+uint32_t endian_from_le32(const struct endian_le32 *v);
+uint64_t endian_from_le64(const struct endian_le64 *v);
+struct endian_le16 endian_to_le16(uint16_t v);
+struct endian_le32 endian_to_le32(uint32_t v);
+struct endian_le64 endian_to_le64(uint64_t v);
+
+#endif
diff --git a/src/endian/src/CMakeLists.txt b/src/endian/src/CMakeLists.txt
new file mode 100644
index 0000000..962291a
--- /dev/null
+++ b/src/endian/src/CMakeLists.txt
@@ -0,0 +1,24 @@
+# wnix, a Unix-like operating system for WebAssembly applications.
+# Copyright (C) 2025  Xavier Del Campo Romero
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+target_sources(endian PRIVATE
+    from_le16.c
+    from_le32.c
+    from_le64.c
+    to_le16.c
+    to_le32.c
+    to_le64.c
+)
diff --git a/src/endian/src/from_le16.c b/src/endian/src/from_le16.c
new file mode 100644
index 0000000..30685fe
--- /dev/null
+++ b/src/endian/src/from_le16.c
@@ -0,0 +1,25 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+uint16_t endian_from_le16(const struct endian_le16 *const v)
+{
+    return v->v[0] | (v->v[1] << 8);
+}
diff --git a/src/endian/src/from_le32.c b/src/endian/src/from_le32.c
new file mode 100644
index 0000000..f56ee7b
--- /dev/null
+++ b/src/endian/src/from_le32.c
@@ -0,0 +1,26 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+uint32_t endian_from_le32(const struct endian_le32 *const v)
+{
+    return v->v[0] | (v->v[1] << 8) | ((unsigned long)v->v[2] << 16)
+        | ((unsigned long)v->v[3] << 24);
+}
diff --git a/src/endian/src/from_le64.c b/src/endian/src/from_le64.c
new file mode 100644
index 0000000..37b5f1a
--- /dev/null
+++ b/src/endian/src/from_le64.c
@@ -0,0 +1,32 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+uint64_t endian_from_le64(const struct endian_le64 *const v)
+{
+    return v->v[0]
+        | (v->v[1] << 8)
+        | ((uint64_t)v->v[2] << 16ul)
+        | ((uint64_t)v->v[3] << 24ul)
+        | ((uint64_t)v->v[4] << 32ul)
+        | ((uint64_t)v->v[5] << 40ul)
+        | ((uint64_t)v->v[6] << 48ul)
+        | ((uint64_t)v->v[7] << 56ul);
+}
diff --git a/src/endian/src/to_le16.c b/src/endian/src/to_le16.c
new file mode 100644
index 0000000..ddf8faf
--- /dev/null
+++ b/src/endian/src/to_le16.c
@@ -0,0 +1,32 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+struct endian_le16 endian_to_le16(const uint16_t v)
+{
+    return (const struct endian_le16)
+    {
+        .v =
+        {
+            [0] = v,
+            [1] = v >> 8
+        }
+    };
+}
diff --git a/src/endian/src/to_le32.c b/src/endian/src/to_le32.c
new file mode 100644
index 0000000..b16dd69
--- /dev/null
+++ b/src/endian/src/to_le32.c
@@ -0,0 +1,34 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+struct endian_le32 endian_to_le32(const uint32_t v)
+{
+    return (const struct endian_le32)
+    {
+        .v =
+        {
+            [0] = v,
+            [1] = v >> 8,
+            [2] = v >> 16,
+            [3] = v >> 24
+        }
+    };
+}
diff --git a/src/endian/src/to_le64.c b/src/endian/src/to_le64.c
new file mode 100644
index 0000000..4d1ef1e
--- /dev/null
+++ b/src/endian/src/to_le64.c
@@ -0,0 +1,38 @@
+/*
+ * wnix, a Unix-like operating system for WebAssembly applications.
+ * Copyright (C) 2025  Xavier Del Campo Romero
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <endian.h>
+#include <stdint.h>
+
+struct endian_le64 endian_to_le64(const uint64_t v)
+{
+    return (const struct endian_le64)
+    {
+        .v =
+        {
+            [0] = v,
+            [1] = v >> 8,
+            [2] = v >> 16,
+            [3] = v >> 24,
+            [4] = v >> 32,
+            [5] = v >> 40,
+            [6] = v >> 48,
+            [7] = v >> 56,
+        }
+    };
+}