gcc/testsuite/gcc.target/avr/progmem.h

   1 #define PROGMEM __attribute__((progmem))
   2
   3 #define PSTR(s)                                             \
   4     (__extension__({                                        \
   5             static const char __c[] PROGMEM = (s);          \
   6             &__c[0];}))
   7
   8 #ifdef __AVR_HAVE_LPMX__
   9 #define pgm_read_char(addr)                                 \
  10     (__extension__({                                        \
  11             unsigned int __addr16 = (unsigned int)(addr);   \
  12             char __result;                                  \
  13             __asm__ ("lpm %0, %a1"                          \
  14                      : "=r" (__result) : "z" (__addr16));   \
  15             __result; }))
  16 #elif defined (__AVR_TINY__)
  17 /* PR71948 auto-adds 0x4000 as needed, hance just a plain read. */
  18 #define pgm_read_char(addr)                                 \
  19   (*(addr))
  20 #else
  21 #define pgm_read_char(addr)                                 \
  22     (__extension__({                                        \
  23             unsigned int __addr16 = (unsigned int)(addr);   \
  24             char __result;                                  \
  25             __asm__ ("lpm" "\n\t"                           \
  26                      "mov %0, r0"                           \
  27                      : "=r" (__result) : "z" (__addr16));   \
  28             __result; }))
  29 #endif