ObjFW  Check-in [1f38dbc88e]

Overview
Comment:Fix inline assembly on x86_64 for gcc with -O.
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SHA3-256: 1f38dbc88e6ab24bc3795568fd79c54b7bfe4b15c77bf213f06de3f5818d0bc7
User & Date: js on 2009-11-29 14:00:12
Other Links: manifest | tags
Context
2009-11-29
16:23
Allow NULL as parameter for -[freeMemory:]. check-in: d57228d9d6 user: js tags: trunk
14:00
Fix inline assembly on x86_64 for gcc with -O. check-in: 1f38dbc88e user: js tags: trunk
11:49
Let OF_BSWAP{16,32,64} automatically detect whether we swap a constant. check-in: f4d5af029a user: js tags: trunk
Changes
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Modified src/OFMacros.h from [4ccaecc03a] to [084aac77e1].

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	 ((uint64_t)i & UINT64_C(0x000000000000FF00)) << 40 |	\
	 ((uint64_t)i & UINT64_C(0x00000000000000FF)) << 56)

static OF_INLINE uint16_t
OF_BSWAP16_NONCONST(uint16_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	asm("xchgb	%h0, %b0" : "=Q"(i) : "Q"(i));
	asm("xchgb	%h0, %b0" : "=Q"(i) : "0"(i));
#elif defined(OF_PPC_ASM)
	asm("lhbrx	%0, 0, %1" : "=r"(i) : "r"(&i), "m"(i));
#elif defined(OF_ARM_ASM)
	asm("rev16	%0, %0" : "=r"(i) : "0"(i));
#else
	i = (i & UINT16_C(0xFF00)) >> 8 |
	    (i & UINT16_C(0x00FF)) << 8;
#endif
	return i;
}

static OF_INLINE uint32_t
OF_BSWAP32_NONCONST(uint32_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	asm("bswap	%0" : "=q"(i) : "q"(i));
	asm("bswap	%0" : "=q"(i) : "0"(i));
#elif defined(OF_PPC_ASM)
	asm("lwbrx	%0, 0, %1" : "=r"(i) : "r"(&i), "m"(i));
#elif defined(OF_ARM_ASM)
	asm("rev	%0, %0" : "=r"(i) : "0"(i));
#else
	i = (i & UINT32_C(0xFF000000)) >> 24 |
	    (i & UINT32_C(0x00FF0000)) >>  8 |
	    (i & UINT32_C(0x0000FF00)) <<  8 |
	    (i & UINT32_C(0x000000FF)) << 24;
#endif
	return i;
}

static OF_INLINE uint64_t
OF_BSWAP64_NONCONST(uint64_t i)
{
#if defined(OF_AMD64_ASM)
	asm("bswap	%0" : "=r"(i) : "r"(i));
	asm("bswap	%0" : "=r"(i) : "0"(i));
#elif defined(OF_X86_ASM)
	asm("bswap	%%eax\n\t"
	    "bswap	%%edx\n\t"
	    "xchgl	%%eax, %%edx" : "=A"(i): "A"(i));
	    "xchgl	%%eax, %%edx" : "=A"(i): "0"(i));
#else
	i = (uint64_t)OF_BSWAP32(i & 0xFFFFFFFF) << 32 | OF_BSWAP32(i >> 32);
#endif
	return i;
}

#ifdef __GNUC__
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