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Imported from libpng-1.2.19beta18.tar

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This commit is contained in:
Glenn Randers-Pehrson
2007-06-22 21:40:24 -05:00
parent 06fe17eb9f
commit f456d0d6bb
58 changed files with 1255 additions and 221 deletions
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38
pnggccrd.c
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@@ -3,7 +3,7 @@
*
* For Intel x86 CPU (Pentium-MMX or later) and GNU C compiler.
*
* Last changed in libpng 1.2.19 June 20, 2007
* Last changed in libpng 1.2.19 June 23, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998 Intel Corporation
* Copyright (c) 1999-2002,2007 Greg Roelofs
@@ -357,9 +357,11 @@
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGGCCRD)
#if defined(__x86_64__) && defined(__PIC__) // optionally comment out __PIC__:
# define PNG_x86_64_USE_GOTPCREL // GOTPCREL => full thread-safety
# define PNG_CLOBBER_x86_64_REGS_SUPPORTED // works as of gcc 3.4.3 ...
#if defined(PNG_MMX_CODE_SUPPORTED)
#if defined(__x86_64__) && defined(__PIC__) /* optionally comment __PIC__: */
# define PNG_x86_64_USE_GOTPCREL /* GOTPCREL => full thread-safety */
# define PNG_CLOBBER_x86_64_REGS_SUPPORTED /* works as of gcc 3.4.3 ... */
#endif
#endif
int PNGAPI png_mmx_support(void);
@@ -718,7 +720,7 @@ static PNG_CONST ull _amask4_2_2 __attribute__((used, aligned(8))) = 0x00000000
static int _mmx_supported = 2; // 0: no MMX; 1: MMX supported; 2: not tested
static int _mmx_supported = 2; /* 0: no MMX; 1: MMX supported; 2: not tested */
/*===========================================================================*/
/* */
@@ -734,14 +736,14 @@ static int _mmx_supported = 2; // 0: no MMX; 1: MMX supported; 2: not tested
* [need to retest with gcc 2.7.2.3]
*/
// GRR 20070524: This declaration apparently is compatible with but supersedes
// the one in png.h; in any case, the generated object file is slightly
// smaller. It is unnecessary with gcc 4.1.2, but gcc 2.x apparently
// replicated the ".NOT_SUPPORTED" label in each location the function was
// inlined, leading to compilation errors due to the "multiply defined"
// label. Old workaround was to leave the function at the end of this
// file; new one (still testing) is to use a gcc-specific function attribute
// to prevent inlining.
/* GRR 20070524: This declaration apparently is compatible with but supersedes
* the one in png.h; in any case, the generated object file is slightly
* smaller. It is unnecessary with gcc 4.1.2, but gcc 2.x apparently
* replicated the ".NOT_SUPPORTED" label in each location the function was
* inlined, leading to compilation errors due to the "multiply defined"
* label. Old workaround was to leave the function at the end of this
* file; new one (still testing) is to use a gcc-specific function attribute
* to prevent inlining. */
int PNGAPI
png_mmx_support(void) __attribute__((noinline));
@@ -887,7 +889,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
{
switch (png_ptr->row_info.pixel_depth)
{
// most common case: combining 32-bit RGBA
/* most common case: combining 32-bit RGBA */
case 32: /* png_ptr->row_info.pixel_depth */
{
png_bytep srcptr;
@@ -2947,15 +2949,15 @@ png_do_read_interlace(png_structp png_ptr)
else if (pixel_bytes == 8)
{
// GRR TEST: should work, but needs testing (special 64-bit version of rpng2?)
// GRR NOTE: no need to combine passes here!
/* GRR NOTE: no need to combine passes here! */
if (((pass == 0) || (pass == 1)) && width)
{
int dummy_value_c; // fix 'forbidden register spilled'
int dummy_value_c; /* fix 'forbidden register spilled' */
int dummy_value_S;
int dummy_value_D;
// source is 8-byte RRGGBBAA
// dest is 64-byte RRGGBBAA RRGGBBAA RRGGBBAA RRGGBBAA ...
/* source is 8-byte RRGGBBAA */
/* dest is 64-byte RRGGBBAA RRGGBBAA RRGGBBAA RRGGBBAA */
__asm__ __volatile__ (
"subl $56, %%edi \n\t" // start of last block