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[newlib-cygwin] Fix v850 target for RTEMS


https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2ab57ad59bc35dafffa69cd4da5e228971de069f

commit 2ab57ad59bc35dafffa69cd4da5e228971de069f
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Wed Nov 7 14:59:19 2018 +0100

    Fix v850 target for RTEMS
    
    Do not define __ATTRIBUTE_IMPURE_PTR__ for RTMES on the v850 target.
    The previous definition lead to the following linker error in
    combination with -fdata-sections:
    
    relocation truncated to fit: R_V810_GPWLO_1 against symbol
    `_global_impure_ptr' defined in .rodata._global_impure_ptr section in
    libc.a(lib_a-impure.o)
    
    relocation truncated to fit: R_V810_GPWLO_1 against symbol `_impure_ptr'
    defined in .data._impure_ptr section in libc.a(lib_a-impure.o)
    
    Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

Diff:
---
 newlib/libc/include/sys/config.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/newlib/libc/include/sys/config.h b/newlib/libc/include/sys/config.h
index 2082dfd..49b62eb 100644
--- a/newlib/libc/include/sys/config.h
+++ b/newlib/libc/include/sys/config.h
@@ -108,7 +108,7 @@
 #define _POINTER_INT short
 #endif
 
-#ifdef __v850
+#if defined(__v850) && !defined(__rtems__)
 #define __ATTRIBUTE_IMPURE_PTR__ __attribute__((__sda__))
 #endif


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