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authorSebastian Huber <sebastian.huber@embedded-brains.de>2016-01-04 10:15:37 (UTC)
committerSebastian Huber <sebastian.huber@embedded-brains.de>2016-01-05 06:05:52 (UTC)
commitf027f37661fc8c12ab07f92982f0c86e4e0717de (patch)
treefee5caaa9d54e875e0c8ccc10ea3e021b27bf05e
parenta7951f2ca39cafad9a933e904e197bba8381e306 (diff)
downloadrtems-tools-f027f37661fc8c12ab07f92982f0c86e4e0717de.tar.bz2
linkers: Fix for targets with a small-data area
On certain targets (e.g. PowerPC) global data below a certain threshold (e.g. 8 bytes) may resided in a special memory area, the small-data area. This allows more efficient load/store operations. Placing such data into the wrong section (e.g. .rodata) leads to relocation errors during link-time. See test program libtests/dl02 in the RTEMS testsuite. Using an array of unspecified size prevents that the compiler assumes that a certain variable is in the small-data area.
-rw-r--r--linkers/rtems-syms.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/linkers/rtems-syms.cpp b/linkers/rtems-syms.cpp
index 97315ac..f0ffe94 100644
--- a/linkers/rtems-syms.cpp
+++ b/linkers/rtems-syms.cpp
@@ -60,7 +60,7 @@ static const char* c_header[] =
" */",
"",
"extern const unsigned char rtems__rtl_base_globals[];",
- "extern const unsigned int rtems__rtl_base_globals_size;",
+ "extern const unsigned int rtems__rtl_base_globals_size[];",
"",
"void rtems_rtl_base_sym_global_add (const unsigned char* , unsigned int );",
"",
@@ -105,7 +105,7 @@ static const char* c_rtl_call_body[] =
{
"{",
" rtems_rtl_base_sym_global_add (&rtems__rtl_base_globals[0],",
- " rtems__rtl_base_globals_size);",
+ " rtems__rtl_base_globals_size[0]);",
"}",
0
};