incbin_util.h

#pragma once
 
// This is based off of the wonderful example found at:
// https://gist.github.com/mmozeiko/ed9655cf50341553d282 that demonstrates how
// to embed resource files into c in a cross platform way.
 
#define STR2(x) #x
#define STR(x) STR2(x)
 
#ifdef __APPLE__
#define USTR(x) "_" STR(x)
#else
#define USTR(x) STR(x)
#endif
 
#ifdef _WIN32
#define INCBIN_SECTION ".rdata, \"dr\""
#elif defined __APPLE__
#define INCBIN_SECTION "__TEXT,__const"
#else
#define INCBIN_SECTION ".rodata"
#endif
 
// extern const char FooBin[], _sizeof_FooBin[];
// this aligns start address to 16 and terminates byte array with explict
// 0 which is not really needed, feel free to change it to whatever you
// want/need
#define INCBIN(prefix, name, file)                                          \
  __asm__(".section " INCBIN_SECTION "\n" \
            ".balign 1\n" \
            ".byte 0\n" \
            ".global " USTR(prefix) "_" STR(name) "_start\n" \
            ".balign 16\n" \
            USTR(prefix) "_" STR(name) "_start:\n" \
            ".incbin \"" file "\"\n" \
            \
            ".global " STR(prefix) "_" STR(name) "_end\n" \
            ".balign 1\n" \
            USTR(prefix) "_" STR(name) "_end:\n" \
            ".byte 0\n" \
    );                                 \
  extern __attribute__((aligned(16))) const char prefix##_##name##_start[]; \
  extern const char prefix##_##name##_end[];