gcc/

	gcc/
	* config/arm/bpabi-v6m.S (test_div_by_zero): New macro.
	(aeabi_ldivmod, aeabi_uldivmod): Use above macro.
	* config/arm/bpabi.S (test_div_by_zero): New macro.
	(aeabi_ldivmod, aeabi_uldivmod): Use above macro.
	* config/arm/lib1funcs.asm (ARM_LDIV0): Tail-call int div-by-zero
	handler for EABI. Add signed/unsigned argument, pass correct value
	to that handler.
	(THUMB_LDIV0): Same, for Thumb.
	(DIV_FUNC_END): Add signed argument.
	(WEAK): New macro (for EABI).
	(__udivsi3, __umodsi3): Add unsigned argument to DIV_FUNC_END. For
	__udivsi3, add entry point which skips division-by-zero test.
	(__divsi3, __modsi3): Add signed argument to DIV_FUNC_END.
	(__aeabi_uidivmod, __aeabi_idivmod): Check for division by zero.
	Call __udivsi3 or __divsi3 via entry points which skip
	division-by-zero tests.
	(__div0): Rename to __aeabi_idiv0, __aeabi_ldiv0 for EABI, and
	declare those names weak.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@155319 138bc75d-0d04-0410-961f-82ee72b054a4