ObjFW  Check-in [f4d5af029a]

Overview
Comment:Let OF_BSWAP{16,32,64} automatically detect whether we swap a constant.
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SHA3-256: f4d5af029a2918796f6061de7e107457541749308c4f7e8fa0c43ad6c3f775de
User & Date: js on 2009-11-29 11:49:30
Other Links: manifest | tags
Context
2009-11-29
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
03:03
Add run-on-iphone target to tests for more comfortable testing. check-in: 3a290a9951 user: js tags: trunk
Changes
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Modified src/OFMacros.h from [ad9b5b8288] to [4ccaecc03a].

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	 ((uint64_t)i & UINT64_C(0x000000FF00000000)) >>  8 |	\
	 ((uint64_t)i & UINT64_C(0x00000000FF000000)) <<  8 |	\
	 ((uint64_t)i & UINT64_C(0x0000000000FF0000)) << 24 |	\
	 ((uint64_t)i & UINT64_C(0x000000000000FF00)) << 40 |	\
	 ((uint64_t)i & UINT64_C(0x00000000000000FF)) << 56)

static OF_INLINE uint16_t
OF_BSWAP16(uint16_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	asm("xchgb	%h0, %b0" : "=Q"(i) : "Q"(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(uint32_t i)
{
#if defined(OF_X86_ASM) || defined(OF_AMD64_ASM)
	asm("bswap	%0" : "=q"(i) : "q"(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(uint64_t i)
{
#if defined(OF_AMD64_ASM)
	asm("bswap	%0" : "=r"(i) : "r"(i));
#elif defined(OF_X86_ASM)
	asm("bswap	%%eax\n\t"
	    "bswap	%%edx\n\t"
	    "xchgl	%%eax, %%edx" : "=A"(i): "A"(i));
#else
	i = (uint64_t)OF_BSWAP32(i & 0xFFFFFFFF) << 32 | OF_BSWAP32(i >> 32);
#endif
	return i;
}














static OF_INLINE void
OF_BSWAP32_V(uint32_t *buf, size_t len)
{
	while (len--) {
		*buf = OF_BSWAP32(*buf);
		buf++;
	}
}

#ifdef OF_BIG_ENDIAN
#define OF_BSWAP16_CONST_IF_BE(i) OF_BSWAP16_CONST(i)
#define OF_BSWAP32_CONST_IF_BE(i) OF_BSWAP32_CONST(i)
#define OF_BSWAP64_CONST_IF_BE(i) OF_BSWAP64_CONST(i)
#define OF_BSWAP16_CONST_IF_LE(i) i
#define OF_BSWAP32_CONST_IF_LE(i) i
#define OF_BSWAP64_CONST_IF_LE(i) i
#define OF_BSWAP16_IF_BE(i) OF_BSWAP16(i)
#define OF_BSWAP32_IF_BE(i) OF_BSWAP32(i)
#define OF_BSWAP64_IF_BE(i) OF_BSWAP64(i)
#define OF_BSWAP16_IF_LE(i) i
#define OF_BSWAP32_IF_LE(i) i
#define OF_BSWAP64_IF_LE(i) i
#define OF_BSWAP32_V_IF_BE(buf, len) OF_BSWAP32_V(buf, len)
#else
#define OF_BSWAP16_CONST_IF_BE(i) i
#define OF_BSWAP32_CONST_IF_BE(i) i
#define OF_BSWAP64_CONST_IF_BE(i) i
#define OF_BSWAP16_CONST_IF_LE(i) OF_BSWAP16_CONST(i)
#define OF_BSWAP32_CONST_IF_LE(i) OF_BSWAP32_CONST(i)
#define OF_BSWAP64_CONST_IF_LE(i) OF_BSWAP64_CONST(i)
#define OF_BSWAP16_IF_BE(i) i
#define OF_BSWAP32_IF_BE(i) i
#define OF_BSWAP64_IF_BE(i) i
#define OF_BSWAP16_IF_LE(i) OF_BSWAP16(i)
#define OF_BSWAP32_IF_LE(i) OF_BSWAP32(i)
#define OF_BSWAP64_IF_LE(i) OF_BSWAP64(i)
#define OF_BSWAP32_V_IF_BE(buf, len)








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	 ((uint64_t)i & UINT64_C(0x000000FF00000000)) >>  8 |	\
	 ((uint64_t)i & UINT64_C(0x00000000FF000000)) <<  8 |	\
	 ((uint64_t)i & UINT64_C(0x0000000000FF0000)) << 24 |	\
	 ((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));
#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));
#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));
#elif defined(OF_X86_ASM)
	asm("bswap	%%eax\n\t"
	    "bswap	%%edx\n\t"
	    "xchgl	%%eax, %%edx" : "=A"(i): "A"(i));
#else
	i = (uint64_t)OF_BSWAP32(i & 0xFFFFFFFF) << 32 | OF_BSWAP32(i >> 32);
#endif
	return i;
}

#ifdef __GNUC__
#define OF_BSWAP16(i) \
	(__builtin_constant_p(i) ? OF_BSWAP16_CONST(i) : OF_BSWAP16_NONCONST(i))
#define OF_BSWAP32(i) \
	(__builtin_constant_p(i) ? OF_BSWAP32_CONST(i) : OF_BSWAP32_NONCONST(i))
#define OF_BSWAP64(i) \
	(__builtin_constant_p(i) ? OF_BSWAP64_CONST(i) : OF_BSWAP64_NONCONST(i))
#else
#define OF_BSWAP16(i) OF_BSWAP16_CONST(i)
#define OF_BSWAP32(i) OF_BSWAP32_CONST(i)
#define OF_BSWAP64(i) OF_BSWAP64_CONST(i)
#endif

static OF_INLINE void
OF_BSWAP32_V(uint32_t *buf, size_t len)
{
	while (len--) {
		*buf = OF_BSWAP32(*buf);
		buf++;
	}
}

#ifdef OF_BIG_ENDIAN






#define OF_BSWAP16_IF_BE(i) OF_BSWAP16(i)
#define OF_BSWAP32_IF_BE(i) OF_BSWAP32(i)
#define OF_BSWAP64_IF_BE(i) OF_BSWAP64(i)
#define OF_BSWAP16_IF_LE(i) i
#define OF_BSWAP32_IF_LE(i) i
#define OF_BSWAP64_IF_LE(i) i
#define OF_BSWAP32_V_IF_BE(buf, len) OF_BSWAP32_V(buf, len)
#else






#define OF_BSWAP16_IF_BE(i) i
#define OF_BSWAP32_IF_BE(i) i
#define OF_BSWAP64_IF_BE(i) i
#define OF_BSWAP16_IF_LE(i) OF_BSWAP16(i)
#define OF_BSWAP32_IF_LE(i) OF_BSWAP32(i)
#define OF_BSWAP64_IF_LE(i) OF_BSWAP64(i)
#define OF_BSWAP32_V_IF_BE(buf, len)
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Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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