glx: Use the same endian swapping as the rest of the server.
This dumps a ton of configure-time checks for system endian macros. Given that we're marking the mixed-endian fixup code as cold, getting at the system macros is a waste of code. Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Eric Anholt
parent
dae97e1bb4
commit
be80a3cb48
60
configure.ac
60
configure.ac
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@ -147,66 +147,6 @@ fi
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AC_TYPE_PID_T
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# Checks for headers/macros for byte swapping
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# Known variants:
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# <byteswap.h> bswap_16, bswap_32, bswap_64 (glibc)
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# <sys/endian.h> __swap16, __swap32, __swap64 (OpenBSD)
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# <sys/endian.h> bswap16, bswap32, bswap64 (other BSD's)
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# and a fallback to local macros if none of the above are found
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# if <byteswap.h> is found, assume it's the correct version
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AC_CHECK_HEADERS([byteswap.h])
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# if <sys/endian.h> is found, have to check which version
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AC_CHECK_HEADER([sys/endian.h], [HAVE_SYS_ENDIAN_H="yes"], [HAVE_SYS_ENDIAN_H="no"])
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if test "x$HAVE_SYS_ENDIAN_H" = "xyes" ; then
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AC_MSG_CHECKING([for __swap16 variant of <sys/endian.h> byteswapping macros])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([
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#include <sys/types.h>
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#include <sys/endian.h>
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], [
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int a = 1, b;
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b = __swap16(a);
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])
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], [SYS_ENDIAN__SWAP='yes'], [SYS_ENDIAN__SWAP='no'])
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AC_MSG_RESULT([$SYS_ENDIAN__SWAP])
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AC_MSG_CHECKING([for bswap16 variant of <sys/endian.h> byteswapping macros])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([
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#include <sys/types.h>
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#include <sys/endian.h>
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], [
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int a = 1, b;
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b = bswap16(a);
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])
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], [SYS_ENDIAN_BSWAP='yes'], [SYS_ENDIAN_BSWAP='no'])
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AC_MSG_RESULT([$SYS_ENDIAN_BSWAP])
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if test "$SYS_ENDIAN_BSWAP" = "yes" ; then
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USE_SYS_ENDIAN_H=yes
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BSWAP=bswap
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else
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if test "$SYS_ENDIAN__SWAP" = "yes" ; then
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USE_SYS_ENDIAN_H=yes
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BSWAP=__swap
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else
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USE_SYS_ENDIAN_H=no
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fi
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fi
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if test "$USE_SYS_ENDIAN_H" = "yes" ; then
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AC_DEFINE([USE_SYS_ENDIAN_H], 1,
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[Define to use byteswap macros from <sys/endian.h>])
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AC_DEFINE_UNQUOTED([bswap_16], ${BSWAP}16,
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[Define to 16-bit byteswap macro])
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AC_DEFINE_UNQUOTED([bswap_32], ${BSWAP}32,
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[Define to 32-bit byteswap macro])
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AC_DEFINE_UNQUOTED([bswap_64], ${BSWAP}64,
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[Define to 64-bit byteswap macro])
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fi
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fi
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dnl Check to see if dlopen is in default libraries (like Solaris, which
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dnl has it in libc), or if libdl is needed to get it.
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AC_CHECK_FUNC([dlopen], [],
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@ -35,27 +35,27 @@
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#include <dix-config.h>
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#endif
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#if HAVE_BYTESWAP_H
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#include <byteswap.h>
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#elif defined(USE_SYS_ENDIAN_H)
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#include <sys/endian.h>
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#elif defined(__APPLE__)
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#include <libkern/OSByteOrder.h>
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#define bswap_16 OSSwapInt16
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#define bswap_32 OSSwapInt32
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#define bswap_64 OSSwapInt64
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#else
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#define bswap_16(value) \
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((((value) & 0xff) << 8) | ((value) >> 8))
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#include "misc.h"
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#define bswap_32(value) \
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(((uint32_t)bswap_16((uint16_t)((value) & 0xffff)) << 16) | \
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(uint32_t)bswap_16((uint16_t)((value) >> 16)))
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static inline uint16_t
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bswap_16(uint16_t val)
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{
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swap_uint16(&val);
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return val;
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}
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#define bswap_64(value) \
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(((uint64_t)bswap_32((uint32_t)((value) & 0xffffffff)) \
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<< 32) | \
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(uint64_t)bswap_32((uint32_t)((value) >> 32)))
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#endif
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static inline uint32_t
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bswap_32(uint32_t val)
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{
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swap_uint32(&val);
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return val;
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}
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static inline uint64_t
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bswap_64(uint64_t val)
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{
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swap_uint64(&val);
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return val;
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}
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#endif /* !defined(__GLXBYTEORDER_H__) */
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@ -63,9 +63,6 @@
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/* Has libunwind support */
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#undef HAVE_LIBUNWIND
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/* Define to 1 if you have the <byteswap.h> header file. */
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#undef HAVE_BYTESWAP_H
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/* Define to 1 if you have the `cbrt' function. */
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#undef HAVE_CBRT
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@ -322,9 +319,6 @@
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/* Support UNIX socket connections */
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#undef UNIXCONN
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/* Define to use byteswap macros from <sys/endian.h> */
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#undef USE_SYS_ENDIAN_H
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/* unaligned word accesses behave as expected */
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#undef WORKING_UNALIGNED_INT
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@ -454,15 +448,6 @@
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/* Define to 1 if the DTrace Xserver provider probes should be built in */
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#undef XSERVER_DTRACE
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/* Define to 16-bit byteswap macro */
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#undef bswap_16
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/* Define to 32-bit byteswap macro */
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#undef bswap_32
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/* Define to 64-bit byteswap macro */
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#undef bswap_64
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/* Define to 1 if typeof works with your compiler. */
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#undef HAVE_TYPEOF
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