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[3/3,ARC] Use long jumps for CRT calls

Message ID 1491299941-3908-4-git-send-email-claziss@synopsys.com
State New
Headers show

Commit Message

Claudiu Zissulescu April 4, 2017, 9:59 a.m. UTC 
There are situations when the range offered by the bl instruction is
not sufficient to reach CRT routines. Thus, use a long jump
construction.

gcc/
2016-04-21  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.h (CRT_CALL_STATIC_FUNCTION): Use long calls.
---
 gcc/config/arc/arc.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
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Patch

diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h
index 0237e66..0c7e561 100644
--- a/gcc/config/arc/arc.h
+++ b/gcc/config/arc/arc.h
@@ -1518,10 +1518,11 @@  extern enum arc_function_type arc_compute_function_type (struct function *);
 /* Called by crtstuff.c to make calls to function FUNCTION that are defined in
    SECTION_OP, and then to switch back to text section.  */
 #undef CRT_CALL_STATIC_FUNCTION
-#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
-    asm (SECTION_OP "\n\t"				\
-	"bl @" USER_LABEL_PREFIX #FUNC "\n"		\
-	TEXT_SECTION_ASM_OP);
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)		\
+  asm (SECTION_OP "\n\t"					\
+       "add r12,pcl,@" USER_LABEL_PREFIX #FUNC "@pcl\n\t"	\
+       "jl  [r12]\n"						\
+       TEXT_SECTION_ASM_OP);
 
 /* This macro expands to the name of the scratch register r12, used for
    temporary calculations according to the ABI.  */