ObjFW  Check-in [7399e9b249]

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Comment:Add +[OFSystemInfo supportsMXU]
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SHA3-256: 7399e9b249812832d0acb12413633ecc1b4c0fa0f029c777eb19c6ca9aa2ae62
User & Date: js on 2015-10-17 22:50:52
Other Links: manifest | tags
Context
2015-10-18
09:22
Remove +[OFSystemInfo supports{AltiVec,MXU}] check-in: de7e038127 user: js tags: trunk
2015-10-17
22:50
Add +[OFSystemInfo supportsMXU] check-in: 7399e9b249 user: js tags: trunk
19:47
configure: Use -integrated-as on Clang/MIPS check-in: 47ddf24d41 user: js tags: trunk
Changes
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Modified configure.ac from [947e3f1ffd] to [da2e0c30a4].

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	fp_endianess="universal"
])
AC_MSG_RESULT($fp_endianess)
AS_IF([test x"$fp_endianess" = x"unknown"], [
	AC_MSG_ERROR(
		[Floating point implementation does not conform to IEEE 754!])])

case "$host" in
case "$host_cpu" in
	arm*)
		AC_MSG_CHECKING(if VFP2 or above is available)
		AC_TRY_COMPILE([], [
			__asm__ __volatile__ (
			__asm__("fstmfdd sp!, {d0-d7}");
			    "fstmfdd sp!, {d0-d7}"
			);
		], [
			AC_DEFINE(HAVE_VFP2, 1, [Whether we have VFP2 or above])
			AC_MSG_RESULT(yes)
		], [
			AC_MSG_RESULT(no)
		])
		;;
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Modified src/OFSystemInfo.h from [36a7138c5d] to [6fc9fba581].

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 *
 * @note This method is only available on PowerPC.
 *
 * @return Whether the CPU supports AltiVec
 */
+ (bool)supportsAltiVec;
#endif

#ifdef OF_MIPS_ASM
/*!
 * @brief Returns whether the CPU supports MXU.
 *
 * MXU is the SIMD extension of the JZ47XX SoCs.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on MIPS.
 *
 * @return Whether the CPU supports MXU
 */
+ (bool)supportsMXU;
#endif
@end

OF_ASSUME_NONNULL_END

Modified src/OFSystemInfo.m from [77d1af34d2] to [4b19d00e46].

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#endif
#ifdef __HAIKU__
# include <FindDirectory.h>
#endif
#ifdef __QNX__
# include <sys/syspage.h>
#endif
#ifdef OF_PPC_ASM
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
# include <setjmp.h>
# include <signal.h>
#endif

#if defined(OF_X86_64_ASM) || defined(OF_X86_ASM)
struct x86_regs {
	uint32_t eax, ebx, ecx, edx;
};
#endif

static size_t pageSize;
static size_t numberOfCPUs;
#ifdef OF_PPC_ASM
static sig_atomic_t altiVecSupported;
static sigjmp_buf altiVecJumpBuffer;
#if defined(OF_PPC_ASM)
static sig_atomic_t supportsAltiVec = 0;
#elif defined(OF_MIPS_ASM)
static sig_atomic_t supportsMXU = 0;
#endif
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
static sigjmp_buf SIGILLJumpBuffer;
#endif

#if defined(OF_X86_64_ASM)
static OF_INLINE struct x86_regs OF_CONST_FUNC
x86_cpuid(uint32_t eax, uint32_t ecx)
{
	struct x86_regs regs;
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	    : "a"(eax), "c"(ecx)
	);

	return regs;
}
#endif

#ifdef OF_PPC_ASM
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
static void
altiVecSIGILLHandler(int signal)
SIGILLHandler(int signal)
{
	altiVecSupported = 0;
	siglongjmp(altiVecJumpBuffer, 1);
	siglongjmp(SIGILLJumpBuffer, 1);
}
#endif

@implementation OFSystemInfo
#ifdef OF_PPC_ASM
#if defined(OF_PPC_ASM) || defined(OF_MIPS_ASM)
+ (void)load
{
	altiVecSupported = 1;
	if (sigsetjmp(altiVecJumpBuffer, 1) == 0) {
		signal(SIGILL, altiVecSIGILLHandler);
	if (sigsetjmp(SIGILLJumpBuffer, 1) == 0) {
		signal(SIGILL, SIGILLHandler);
# if defined(OF_PPC_ASM)
		__asm__ __volatile__ (
		    "vor	v0, v0, v0"
		);
		supportsAltiVec = 1;
# elif defined(OF_MIPS_ASM)
		/* This also enables the MXU */
		__asm__ __volatile__ (
		    "li	$t0, 1\n\t"
		    ".word 0x7008042f	/* s32i2m xr16, $t0 */"
		    :
		    :
		    : "$8" /* $t0 */
		);
		supportsMXU = 1;
# endif
	}
	signal(SIGILL, SIG_DFL);
}
#endif

+ (void)initialize
{
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	return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
}
#endif

#ifdef OF_PPC_ASM
+ (bool)supportsAltiVec
{
	return supportsAltiVec;
}
#endif
	return altiVecSupported;

#ifdef OF_MIPS_ASM
+ (bool)supportsMXU
{
	return supportsMXU;
}
#endif
@end

Modified src/macros.h from [c4da03627b] to [57b5109a4c].

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#   define OF_ARMV6_ASM
#  endif
#  ifdef OF_ARMV7_ASM
#   define OF_ARMV6_ASM
#  endif
# elif defined(__arm64__) || defined(__aarch64__)
#  define OF_ARM64_ASM
# elif (defined(_MIPS_SIM) && _MIPS_SIM == _ABIO32) || \
	(defined(__mips_eabi) && _MIPS_SZPTR == 32)
#  define OF_MIPS_ASM
# endif
#endif

#ifdef OF_APPLE_RUNTIME
# if defined(__x86_64__) || defined(__i386__) || defined(__ARM64_ARCH_8__) || \
	defined(__arm__) || defined(__ppc__)
#  define OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR
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