[Gc] libatomic_ops: old patches resubmission 2 (better gcc/vc amd64 support)

Ivan Maidanski ivmai at mail.ru
Thu Aug 6 00:23:33 PDT 2009


The attached cumulative patch (superseding diff88_cvs partly which, in turn, resembles diff8, diff29, diff43, diff68, diff78 partly) is against the current CVS, doesn't depend on any other pending patches, and deals only with gcc/vc++ amd64 support issues. The only modified file are gcc/x86_64.h, msftc/x86_64.h and standard_ao_double_t.h.

libatomic_ops ChangeLog entries:

	* src/atomic_ops/sysdeps/gcc/x86_64.h: Remove comments about i486
	and 32-bit WinChips.
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Ditto.
	* src/atomic_ops/sysdeps/gcc/x86_64.h (AO_nop_full): Replace
	K&R-style function definition with ANSI C one.
	* src/atomic_ops/sysdeps/msftc/x86_64.h (AO_nop_full): Ditto.
	* src/atomic_ops/sysdeps/gcc/x86_64.h
	(AO_compare_double_and_swap_double_full): Fix comment.
	* src/atomic_ops/sysdeps/gcc/x86_64.h
	(AO_compare_double_and_swap_double_full): Swap all "val1" and "val2"
	variables ("val1" is the lowest part of AO_double_t).
	* src/atomic_ops/sysdeps/msftc/x86_64.h
	(AO_compare_double_and_swap_double_full): Ditto.
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Remove comment about
	* src/atomic_ops/sysdeps/msftc/x86_64.h (AO_ASM_X64_AVAILABLE): New
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Include
	"test_and_set_t_is_char.h" if AO_ASM_X64_AVAILABLE (same as in
	x86_64.h for gcc); remove FIXME (for re-implement test-and-set).
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Include
	"standard_ao_double_t.h" (same as in x86_64.h for gcc).
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Add comment for include
	<intrin.h> assuming at least VC++ v8.
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Remove _Interlocked
	prototypes (since they are always declared in intrin.h).
	* src/atomic_ops/sysdeps/msftc/x86_64.h (AO_nop_full): Move its
	definition below CAS primitive (to textually group all asm-based
	primitives together).
	* src/atomic_ops/sysdeps/msftc/x86_64.h (AO_test_and_set_full):
	Implement for AO_ASM_X64_AVAILABLE case.
	* src/atomic_ops/sysdeps/msftc/x86_64.h: Remove AO_CASDOUBLE_MISSING
	macro (replaced with AO_ASM_X64_AVAILABLE).
	* src/atomic_ops/sysdeps/msftc/x86_64.h
	(AO_compare_double_and_swap_double_full): Add intrinsic-based
	implementation for VC++ v9+.
	* src/atomic_ops/sysdeps/standard_ao_double_t.h: Include
	<xmmintrin.h> (and use "__m128" type) if _WIN64.
	* src/atomic_ops/sysdeps/standard_ao_double_t.h
	(AO_HAVE_DOUBLE_PTR_STORAGE): Define it always (as
	"double_ptr_storage" is defined for all cases).

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