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[libpng17] Port recent libpng-1.6.7beta03, beta04 changes to 1.7.0beta21

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(mainly ARMv8 support)
This commit is contained in:
John Bowler
2013-11-02 15:23:42 -05:00
committed by Glenn Randers-Pehrson
parent fe6e6cf130
commit 4b29f97f9b
20 changed files with 526 additions and 44 deletions
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10
arm/filter_neon.S
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@@ -3,7 +3,7 @@
*
* Copyright (c) 2013 Glenn Randers-Pehrson
* Written by Mans Rullgard, 2011.
* Last changed in libpng 1.5.17 [July 18, 2013]
* Last changed in libpng 1.6.7 [(PENDING RELEASE)]
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
@@ -20,6 +20,13 @@
.section .note.GNU-stack,"",%progbits /* mark stack as non-executable */
#endif
/* Assembler NEON support - only works for 32-bit ARM (i.e. it does not work for
* ARM64). The code in arm/filter_neon_intrinsics.c supports ARM64, however it
* only works if -mfpu=neon is specified on the GCC command line. See pngpriv.h
* for the logic which sets PNG_USE_ARM_NEON_ASM:
*/
#if PNG_ARM_NEON_IMPLEMENTATION == 2 /* hand-coded assembler */
#ifdef PNG_READ_SUPPORTED
#if PNG_ARM_NEON_OPT > 0
@@ -235,3 +242,4 @@ func png_read_filter_row_paeth3_neon, export=1
endfunc
#endif /* PNG_ARM_NEON_OPT > 0 */
#endif /* PNG_READ_SUPPORTED */
#endif /* PNG_ARM_NEON_IMPLEMENTATION == 2 (assembler) */