* arm.c (thumb1_output_casesi): New function.
	* arm.h (CASE_VECTOR_PC_RELATIVE): Thumb-1 code is also relative if
	optimizing for size or PIC.
	(CASE_VECTOR_SHORTEN_MODE): Handle thumb-1.
	* arm.md (UNSPEC_THUMB1_CASESI): New constant.
	(casesi): Handle Thumb-1 when optimizing for size or PIC.
	(thumb1_casesi_internal_pic): New expand rule.
	(thumb1_casesi_dispatch): New pattern.
	* aout.h (ASM_OUTPUT_ADDR_DIFF_ELT): Use shortened vectors for
	thumb-1 mode.
	* coff.h (JUMP_TABLES_IN_TEXT_SECTION): Thumb-1 jump tables are now
	in the text seciton when PIC or optimizing for size.
	* elf.h (JUMP_TABLES_IN_TEXT_SECTION): Likewise.
	* lib1funcs.asm ([__ARM_EABI__]): Add an attribute describing stack
	preservation properties of code.
	(__gnu_thumb1_case_sqi, __gnu_thumb1_case_uqi): New functions.
	(__gnu_thumb1_case_shi, __gnu_thumb1_case_uhi): New functions.
	(__gnu_thumb1_case_si): New function.
	* t-arm (LIB1ASMSRC): Define here.
	(LIB1ASMFUNCS): Add some common functions.
	* t-arm-elf (LIB1ASMSRC): Delete.
	(LIB1ASMFUNCS): Append to existing set.
	* t-pe (LIB1ASMSRC, LIB1ASMFUNCS): Likewise.
	* t-strongarm-elf (LIB1ASMSRC, LIB1ASMFUNCS): Likewise.
	* t-symbian (LIB1ASMFUNCS): Likewise.
	* t-vxworks (LIB1ASMSRC, LIB1ASMFUNCS): Likewise.
	* t-wince-pe (LIB1ASMSRC, LIB1ASMFUNCS): Likewise.

From-SVN: r148770