- synchronized patches with official AVR toolchain 3.4.1.830

[packages/crossavr-gcc.git] / 307-gcc-avrtc536.patch

diff -Naurp gcc/config/avr/avr-c.c gcc/config/avr/avr-c.c
--- gcc/config/avr/avr-c.c	2012-05-30 14:46:12.000000000 +0530
+++ gcc/config/avr/avr-c.c	2012-06-06 13:00:15.000000000 +0530
@@ -95,8 +95,22 @@ avr_cpu_cpp_builtins (struct cpp_reader 
     }
 
   if (avr_current_arch->avrtiny)
- 	{
+    {
       cpp_define (pfile, "__AVR_TINY__");
- 	}
+
+      /*
+      Define macro "__AVR_TINY_PM_BASE_ADDRESS__" with mapped program memory
+      start address. This macro shall be referred where mapped program memory
+      is accessed. (Eg. copying data section (do_copy_data) contents to data
+      memory region.
+      NOTE:
+      Program memory of AVR_TINY devices can not be accessed directly, it has
+      been mapped to the data memory. For AVR_TINY devices (ATtiny4/ 5/ 9/ 10/
+      20 and 40) mapped program memory starts at 0x4000.
+      */
+      cpp_define (pfile, "__AVR_TINY_PM_BASE_ADDRESS__=0x4000");
+    }
+
+
 }