[PATCH v4] Fixups of Loongson2F

[Nick Clifton]

Hi Richard,

   [Oops - sorry for taking so long to review this patch].

> OK, how's this?  If it looks OK, could someone give it a spin on
> affected Loongson 2F hardware and let me know if it works?

It looks OK to me, but I do not have access to Loongson hardware to 
verify it.  Since there has been no response from Wu however I think 
that you should go ahead and apply it.  If there turns out to be a 
problem the the ".set noat" behaviour then I am sure that someone will 
eventually notice it and complain.

Cheers
   Nick

> include/opcode/
> 	* mips.h (M_JALR_1, M_JALR_2, M_JR, M_NOP): New macro enums.
>
> opcodes/
> 	* mips-opc.c (nop, jr, jalr): Treat as macros.
>
> gas/
> 	* doc/c-mips.texi (-mfix-loongson2f-jump): Be more specific.
> 	* config/tc-mips.c (mips_fix_loongson2f): Delete.
> 	(fix_loongson2f_nop, fix_loongson2f_jump, fix_loongson2f): Likewise.
> 	(append_insn): Don't call mips_fix_loongson2f.
> 	(append_simple_insn): New function, extracted from...
> 	(md_assemble): ...here.
> 	(macro_build_nop, modify_jump_target): New functions.
> 	(macro_build_jalr, macro_build_jr): Likewise.
> 	(macro_build_jalr): Rename existing function to...
> 	(macro_build_pic_jalr): ...this.  Add a used_at parameter and use
> 	the new macro_build_jalr.
> 	(load_delay_nop): Use macro_build_nop.
> 	(load_address): Likewise.
> 	(macro): Use macro_build_nop, macro_build_jr and macro_build_jalr.
> 	Handle M_NOP, M_JR, M_JALR_1 and M_JALR_2.  Update calls to what
> 	is now macro_build_pic_jalr.
> 	(macro2): Likewise.
> 	(md_parse_option): Don't set mips_fix_loongson2f.
>
> gas/testsuite/
> 	* gas/mips/loongson-2f-2.s: Swap the explicit and implicit cases.
> 	Add tests for various macro modes.
> 	* gas/mips/loongson-2f-3.s: Test J, JR, single-operand JA{L,}R and
> 	double-operand JA{L,}R for both the "fix" and "no fix" cases.
> 	* gas/mips/loongson-2f-3.d: Require -mips1 -mabi=32.  Update after
> 	above changes.
> 	* gas/mips/loongson-2f-4.s, gas/mips/loongson-2f-4.d,
> 	gas/mips/loongson-2f-4.l, gas/mips/loongson-2f-5.s,
> 	gas/mips/loongson-2f-5.l: New tests.
> 	* gas/mips/mips.exp: Run them.