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Re: [PATCH] RTEMS: Add LEON3/SPARC multilibs

> I don't expect that this will be back ported to GCC 4.8.  You also need
> Binutils 2.24 for this.

>From a SPARC maintainership viewpoint, I'd think that this is backportable for 
the upcoming 4.8.2 release, and the patches are essentially SPARC-specific, 
but perhaps the RMs are of a different opinion here.

2013-08-09  Eric Botcazou  <>

	* Add GAS check for LEON instructions on SPARC.
	* configure: Regenerate.
	* Likewise.
	* config.gcc (with_cpu): Remove sparc-leon*-* and deal with LEON in the
	sparc*-*-* block.
	* config/sparc/sparc.opt (LEON, LEON3): New masks.
	* config/sparc/sparc.h (ASM_CPU32_DEFAULT_SPEC): Set to AS_LEON_FLAG
	for LEON or LEON3.
	(ASM_CPU_SPEC): Pass AS_LEON_FLAG if -mcpu=leon or -mcpu=leon3.
	(AS_LEON_FLAG): New macro.
	* config/sparc/sparc.c (sparc_option_override): Set MASK_LEON for leon
	and MASK_LEON3 for leon3 and unset them if HAVE_AS_LEON is not defined.
	Deal with LEON and LEON3 for the memory model.
	* config/sparc/ (atomic_compare_and_swap<mode>): Enable if LEON3
	(atomic_compare_and_swap<mode>_1): Likewise.
	(*atomic_compare_and_swap<mode>_1): Likewise.

2013-07-23  Eric Botcazou  <>

	* doc/invoke.texi (SPARC Options): Document new leon3 processor value.

2013-07-22  Eric Botcazou  <>

	* config.gcc (sparc*-*-*): Accept leon3 processor.
	(sparc-leon*-*): Merge with sparc*-*-* and add leon3 support.
	* doc/invoke.texi (SPARC Options): Adjust -mfix-ut699 entry.
	* config/sparc/sparc-opts.h (enum processor_type): Add PROCESSOR_LEON3.
	* config/sparc/sparc.opt (enum processor_type): Add leon3.
	(mfix-ut699): Adjust comment.
	* config/sparc/sparc.h (TARGET_CPU_leon3): New define.
	(CPP_CPU32_DEFAULT_SPEC): Add leon3 support.
	(CPP_CPU_SPEC): Likewise.
	(ASM_CPU_SPEC): Likewise.
	* config/sparc/sparc.c (leon3_cost): New constant.
	(sparc_option_override): Add leon3 support.
	(mem_ref): New function.
	(sparc_gate_work_around_errata): Return true if -mfix-ut699 is enabled.
	(sparc_do_work_around_errata): Look into the instruction in the delay
	slot and adjust accordingly.  Add fix for the data cache nullify issues
	of the UT699.  Change insertion position for the NOP.
	* config/sparc/ (leon_fpalu, leon_fpmds, write_buf): Delete.
	(leon3_load): New reservation.
	(leon_store): Bump latency to 2.
	(grfpu): New automaton.
	(grfpu_alu): New unit.
	(grfpu_ds): Likewise.
	(leon_fp_alu): Adjust.
	(leon_fp_mult): Delete.
	(leon_fp_div): Split into leon_fp_divs and leon_fp_divd.
	(leon_fp_sqrt): Split into leon_fp_sqrts and leon_fp_sqrtd.
	* config/sparc/ (cpu): Add leon3.
	* config/sparc/ (atomic_exchangesi): Disable if -mfix-ut699.
	(swapsi): Likewise.
	(atomic_test_and_set): Likewise.
	(ldstub): Likewise.

2013-05-28  Eric Botcazou  <>

	* doc/invoke.texi (SPARC Options): Document -mfix-ut699.
	* builtins.c (expand_builtin_mathfn) <BUILT_IN_SQRT>: Try to widen the
	mode if the instruction isn't available in the original mode.
	* config/sparc/sparc.opt (mfix-ut699): New option.
	* config/sparc/ (muldf3_extend): Disable if -mfix-ut699.
	(divdf3): Turn into expander.
	(divdf3_nofix): New insn.
	(divdf3_fix): Likewise.
	(divsf3): Disable if -mfix-ut699.
	(sqrtdf2): Turn into expander.
	(sqrtdf2_nofix): New insn.
	(sqrtdf2_fix): Likewise.
	(sqrtsf2): Disable if -mfix-ut699.

Eric Botcazou

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