sparc: Re-add abi compliant structure support

mirror of https://github.com/partic2/libffi synced 2026-11-11 02:27:19 +00:00

The original code, removed in the "rewrite" patch, was incorrect for
large structures, and required dynamic allocation of a trampoline on
every ffi_call.

Instead, allocate a 4k entry table of all possible structure returns.
The table is 80k, but is read-only and dynamically paged, which ought
to be better than allocating the trampoline.

This is difficult to test with gcc.  One can only use -O0 at present.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63668.

This commit is contained in:

Richard Henderson

2014-11-12 09:36:11 +01:00

parent 92022496ef

commit 6eec410f15

5 changed files with 39 additions and 17 deletions

									
										src/sparc/internal.h
									
		+1
		-1
	
												View File
												
				@@ -23,4 +23,4 @@

				#define SPARC_FLAG_RET_IN_MEM	32

				#define SPARC_FLAG_FP_ARGS	64

				#define SPARC_FLTMASK_SHIFT	8

				#define SPARC_SIZEMASK_SHIFT	8