X-Git-Url: http://git.pld-linux.org/?p=packages%2Fcrossavr-libc.git;a=blobdiff_plain;f=303-avr-libc-avrtc536.patch;fp=303-avr-libc-avrtc536.patch;h=ca8a53f63a7475e2c4451bd494896ead73cc07e6;hp=0000000000000000000000000000000000000000;hb=9fe267c294d039f9ca8e989282fb11d9b4ed4238;hpb=f839c664f660cc5a62496dd8451b74b9dd1b17dc

diff --git a/303-avr-libc-avrtc536.patch b/303-avr-libc-avrtc536.patch
new file mode 100644
index 0000000..ca8a53f
--- /dev/null
+++ b/303-avr-libc-avrtc536.patch
@@ -0,0 +1,111 @@
+diff -Naurp include/avr/pgmspace.h include/avr/pgmspace.h
+--- include/avr/pgmspace.h	2011-12-29 14:21:50.000000000 +0530
++++ include/avr/pgmspace.h	2012-06-04 15:08:29.000000000 +0530
+@@ -419,6 +419,19 @@ typedef uint64_t  prog_uint64_t __attrib
+     __result;                   \
+ }))
+ 
++#define __LPM_tiny__(addr)      \
++(__extension__({                \
++    uint16_t __addr16 = (uint16_t)(addr) + __AVR_TINY_PM_BASE_ADDRESS__; \
++    uint8_t __result;           \
++    __asm__                     \
++    (                           \
++        "ld %0, z" "\n\t"       \
++        : "=r" (__result)       \
++        : "z" (__addr16)        \
++    );                          \
++    __result;                   \
++}))
++
+ #define __LPM_enhanced__(addr)  \
+ (__extension__({                \
+     uint16_t __addr16 = (uint16_t)(addr); \
+@@ -450,6 +463,20 @@ typedef uint64_t  prog_uint64_t __attrib
+     __result;                               \
+ }))
+ 
++#define __LPM_word_tiny__(addr)             \
++(__extension__({                            \
++    uint16_t __addr16 = (uint16_t)(addr) + __AVR_TINY_PM_BASE_ADDRESS__; \
++    uint16_t __result;                      \
++    __asm__                                 \
++    (                                       \
++        "ld %A0, z+"     "\n\t"             \
++        "ld %B0, z"      "\n\t"             \
++        : "=r" (__result), "=z" (__addr16)  \
++        : "1" (__addr16)                    \
++    );                                      \
++    __result;                               \
++}))
++
+ #define __LPM_word_enhanced__(addr)         \
+ (__extension__({                            \
+     uint16_t __addr16 = (uint16_t)(addr);   \
+@@ -488,6 +515,22 @@ typedef uint64_t  prog_uint64_t __attrib
+     __result;                               \
+ }))
+ 
++#define __LPM_dword_tiny__(addr)            \
++(__extension__({                            \
++    uint16_t __addr16 = (uint16_t)(addr) + __AVR_TINY_PM_BASE_ADDRESS__; \
++    uint32_t __result;                      \
++    __asm__                                 \
++    (                                       \
++        "ld %A0, z+"    "\n\t"              \
++        "ld %B0, z+"    "\n\t"              \
++        "ld %C0, z+"    "\n\t"              \
++        "ld %D0, z"     "\n\t"              \
++        : "=r" (__result), "=z" (__addr16)  \
++        : "1" (__addr16)                    \
++    );                                      \
++    __result;                               \
++}))
++
+ #define __LPM_dword_enhanced__(addr)        \
+ (__extension__({                            \
+     uint16_t __addr16 = (uint16_t)(addr);   \
+@@ -528,6 +571,22 @@ typedef uint64_t  prog_uint64_t __attrib
+     __result;                               \
+ }))
+ 
++#define __LPM_float_tiny__(addr)            \
++(__extension__({                            \
++    uint16_t __addr16 = (uint16_t)(addr) + __AVR_TINY_PM_BASE_ADDRESS__; \
++    float __result;                         \
++    __asm__                                 \
++    (                                       \
++        "ld %A0, z+"   "\n\t"               \
++        "ld %B0, z+"   "\n\t"               \
++        "ld %C0, z+"   "\n\t"               \
++        "ld %D0, z"    "\n\t"               \
++        : "=r" (__result), "=z" (__addr16)  \
++        : "1" (__addr16)                    \
++    );                                      \
++    __result;                               \
++}))
++
+ #define __LPM_float_enhanced__(addr)        \
+ (__extension__({                            \
+     uint16_t __addr16 = (uint16_t)(addr);   \
+@@ -549,6 +608,20 @@ typedef uint64_t  prog_uint64_t __attrib
+ #define __LPM_word(addr)    __LPM_word_enhanced__(addr)
+ #define __LPM_dword(addr)   __LPM_dword_enhanced__(addr)
+ #define __LPM_float(addr)   __LPM_float_enhanced__(addr)
++/*
++Macro to read data from program memory for avr tiny parts(tiny 4/5/9/10/20/40).
++why:
++- LPM instruction is not available in AVR_TINY instruction set.
++- Programs are executed starting from address 0x0000 in program memory.
++But it must be addressed starting from 0x4000 when accessed via data memory.
++Reference: TINY device (ATTiny 4,5,9,10,20 and 40) datasheets
++Bug: avrtc-536
++*/
++#elif defined (__AVR_TINY__)
++#define __LPM(addr)         __LPM_tiny__(addr)
++#define __LPM_word(addr)    __LPM_word_tiny__(addr)
++#define __LPM_dword(addr)   __LPM_dword_tiny__(addr)
++#define __LPM_float(addr)   __LPM_float_tiny__(addr)
+ #else
+ #define __LPM(addr)         __LPM_classic__(addr)
+ #define __LPM_word(addr)    __LPM_word_classic__(addr)