initial commit

libraries/FastLED/src/platforms/null_progmem.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <string.h>  // for standard memcpy
+#include "fl/int.h"  // for FastLED integer types
+
+// Guard against PROGMEM redefinition on platforms that have their own definition
+#if !defined(PROGMEM) && !defined(__IMXRT1062__) && !defined(__MK20DX128__) && !defined(__MK20DX256__) && !defined(__MK66FX1M0__) && !defined(__MK64FX512__) && !defined(__MKL26Z64__)
+#define PROGMEM
+#endif
+
+#if !defined(FL_PROGMEM)
+// Ensure PROGMEM is available before using it
+#if defined(PROGMEM)
+#define FL_PROGMEM PROGMEM
+#else
+// Fallback for platforms without PROGMEM - just use empty attribute
+#define FL_PROGMEM
+#endif
+#endif
+
+// Private helper function for safe memory copying to avoid strict aliasing issues
+// This uses standard memcpy but is scoped locally to avoid conflicts
+template<typename T>
+static inline T fl_progmem_safe_read(const void* addr) {
+    T result;
+    memcpy(&result, addr, sizeof(T));
+    return result;
+}
+
+// Safe memory access macros to avoid strict aliasing issues
+// These use the private helper function which wraps memcpy safely
+static inline fl::u8 fl_pgm_read_byte_near_safe(const void* addr) {
+    return fl_progmem_safe_read<fl::u8>(addr);
+}
+
+static inline fl::u16 fl_pgm_read_word_near_safe(const void* addr) {
+    return fl_progmem_safe_read<fl::u16>(addr);
+}
+
+static inline fl::u32 fl_pgm_read_dword_near_safe(const void* addr) {
+    return fl_progmem_safe_read<fl::u32>(addr);
+}
+
+#define FL_PGM_READ_BYTE_NEAR(x) (fl_pgm_read_byte_near_safe(x))
+#define FL_PGM_READ_WORD_NEAR(x) (fl_pgm_read_word_near_safe(x))
+#define FL_PGM_READ_DWORD_NEAR(x) (fl_pgm_read_dword_near_safe(x))
+#define FL_ALIGN_PROGMEM
+
+#define FL_PROGMEM_USES_NULL 1