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Diffstat (limited to 'src/libmpeg2new/libmpeg2/cpu_accel.c')
-rw-r--r--src/libmpeg2new/libmpeg2/cpu_accel.c228
1 files changed, 151 insertions, 77 deletions
diff --git a/src/libmpeg2new/libmpeg2/cpu_accel.c b/src/libmpeg2new/libmpeg2/cpu_accel.c
index dac3cf83d..7846f1e88 100644
--- a/src/libmpeg2new/libmpeg2/cpu_accel.c
+++ b/src/libmpeg2new/libmpeg2/cpu_accel.c
@@ -1,6 +1,6 @@
/*
* cpu_accel.c
- * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 2000-2004 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
@@ -26,16 +26,25 @@
#include <inttypes.h>
#include "../include/mpeg2.h"
+#include "../include/attributes.h"
+#include "mpeg2_internal.h"
-#define ACCEL_DETECT /* Force accel on */
-
-#ifdef ACCEL_DETECT
#ifdef ARCH_X86
-static inline uint32_t arch_accel (void)
+static inline uint32_t arch_accel (uint32_t accel)
{
- uint32_t eax, ebx, ecx, edx;
- int AMD;
- uint32_t caps;
+ if (accel & (MPEG2_ACCEL_X86_3DNOW | MPEG2_ACCEL_X86_MMXEXT))
+ accel |= MPEG2_ACCEL_X86_MMX;
+
+ if (accel & (MPEG2_ACCEL_X86_SSE2 | MPEG2_ACCEL_X86_SSE3))
+ accel |= MPEG2_ACCEL_X86_MMXEXT;
+
+ if (accel & (MPEG2_ACCEL_X86_SSE3))
+ accel |= MPEG2_ACCEL_X86_SSE2;
+
+#ifdef ACCEL_DETECT
+ if (accel & MPEG2_ACCEL_DETECT) {
+ uint32_t eax, ebx, ecx, edx;
+ int AMD;
#if !defined(PIC) && !defined(__PIC__)
#define cpuid(op,eax,ebx,ecx,edx) \
@@ -60,55 +69,63 @@ static inline uint32_t arch_accel (void)
: "cc")
#endif
- __asm__ ("pushf\n\t"
- "pushf\n\t"
- "pop %0\n\t"
- "movl %0,%1\n\t"
- "xorl $0x200000,%0\n\t"
- "push %0\n\t"
- "popf\n\t"
- "pushf\n\t"
- "pop %0\n\t"
- "popf"
- : "=r" (eax),
- "=r" (ebx)
- :
- : "cc");
+ __asm__ ("pushf\n\t"
+ "pushf\n\t"
+ "pop %0\n\t"
+ "movl %0,%1\n\t"
+ "xorl $0x200000,%0\n\t"
+ "push %0\n\t"
+ "popf\n\t"
+ "pushf\n\t"
+ "pop %0\n\t"
+ "popf"
+ : "=r" (eax),
+ "=r" (ebx)
+ :
+ : "cc");
- if (eax == ebx) /* no cpuid */
- return 0;
+ if (eax == ebx) /* no cpuid */
+ return accel;
- cpuid (0x00000000, eax, ebx, ecx, edx);
- if (!eax) /* vendor string only */
- return 0;
+ cpuid (0x00000000, eax, ebx, ecx, edx);
+ if (!eax) /* vendor string only */
+ return accel;
- AMD = (ebx == 0x68747541) && (ecx == 0x444d4163) && (edx == 0x69746e65);
+ AMD = (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65);
- cpuid (0x00000001, eax, ebx, ecx, edx);
- if (! (edx & 0x00800000)) /* no MMX */
- return 0;
+ cpuid (0x00000001, eax, ebx, ecx, edx);
+ if (! (edx & 0x00800000)) /* no MMX */
+ return accel;
- caps = MPEG2_ACCEL_X86_MMX;
- if (edx & 0x02000000) /* SSE - identical to AMD MMX extensions */
- caps = MPEG2_ACCEL_X86_MMX | MPEG2_ACCEL_X86_MMXEXT;
+ accel |= MPEG2_ACCEL_X86_MMX;
+ if (edx & 0x02000000) /* SSE - identical to AMD MMX extensions */
+ accel |= MPEG2_ACCEL_X86_MMXEXT;
- cpuid (0x80000000, eax, ebx, ecx, edx);
- if (eax < 0x80000001) /* no extended capabilities */
- return caps;
+ if (edx & 0x04000000) /* SSE2 */
+ accel |= MPEG2_ACCEL_X86_SSE2;
+
+ if (ecx & 0x00000001) /* SSE3 */
+ accel |= MPEG2_ACCEL_X86_SSE3;
+
+ cpuid (0x80000000, eax, ebx, ecx, edx);
+ if (eax < 0x80000001) /* no extended capabilities */
+ return accel;
- cpuid (0x80000001, eax, ebx, ecx, edx);
+ cpuid (0x80000001, eax, ebx, ecx, edx);
- if (edx & 0x80000000)
- caps |= MPEG2_ACCEL_X86_3DNOW;
+ if (edx & 0x80000000)
+ accel |= MPEG2_ACCEL_X86_3DNOW;
- if (AMD && (edx & 0x00400000)) /* AMD MMX extensions */
- caps |= MPEG2_ACCEL_X86_MMXEXT;
+ if (AMD && (edx & 0x00400000)) /* AMD MMX extensions */
+ accel |= MPEG2_ACCEL_X86_MMXEXT;
+ }
+#endif /* ACCEL_DETECT */
- return caps;
+ return accel;
}
#endif /* ARCH_X86 */
-#ifdef ARCH_PPC
+#if defined(ACCEL_DETECT) && (defined(ARCH_PPC) || defined(ARCH_SPARC))
#include <signal.h>
#include <setjmp.h>
@@ -125,60 +142,117 @@ static RETSIGTYPE sigill_handler (int sig)
canjump = 0;
siglongjmp (jmpbuf, 1);
}
+#endif /* ACCEL_DETECT && (ARCH_PPC || ARCH_SPARC) */
-static inline uint32_t arch_accel (void)
+#ifdef ARCH_PPC
+static inline uint32_t arch_accel (uint32_t accel)
{
- static RETSIGTYPE (* oldsig) (int);
+#ifdef ACCEL_DETECT
+ if (accel & (MPEG2_ACCEL_PPC_ALTIVEC | MPEG2_ACCEL_DETECT) ==
+ MPEG2_ACCEL_DETECT) {
+ static RETSIGTYPE (* oldsig) (int);
- oldsig = signal (SIGILL, sigill_handler);
- if (sigsetjmp (jmpbuf, 1)) {
- signal (SIGILL, oldsig);
- return 0;
- }
+ oldsig = signal (SIGILL, sigill_handler);
+ if (sigsetjmp (jmpbuf, 1)) {
+ signal (SIGILL, oldsig);
+ return accel;
+ }
- canjump = 1;
+ canjump = 1;
#ifdef HAVE_ALTIVEC_H /* gnu */
#define VAND(a,b,c) "vand " #a "," #b "," #c "\n\t"
#else /* apple */
#define VAND(a,b,c) "vand v" #a ",v" #b ",v" #c "\n\t"
#endif
- asm volatile ("mtspr 256, %0\n\t"
- VAND (0, 0, 0)
- :
- : "r" (-1));
+ asm volatile ("mtspr 256, %0\n\t"
+ VAND (0, 0, 0)
+ :
+ : "r" (-1));
- signal (SIGILL, oldsig);
- return MPEG2_ACCEL_PPC_ALTIVEC;
+ canjump = 0;
+ accel |= MPEG2_ACCEL_PPC_ALTIVEC;
+
+ signal (SIGILL, oldsig);
+ }
+#endif /* ACCEL_DETECT */
+
+ return accel;
}
#endif /* ARCH_PPC */
-#ifdef ARCH_ALPHA
-static inline uint32_t arch_accel (void)
+#ifdef ARCH_SPARC
+static inline uint32_t arch_accel (uint32_t accel)
{
- uint64_t no_mvi;
+ if (accel & MPEG2_ACCEL_SPARC_VIS2)
+ accel |= MPEG2_ACCEL_SPARC_VIS;
+
+#ifdef ACCEL_DETECT
+ if (accel & (MPEG2_ACCEL_SPARC_VIS2 | MPEG2_ACCEL_DETECT) ==
+ MPEG2_ACCEL_DETECT) {
+ static RETSIGTYPE (* oldsig) (int);
+
+ oldsig = signal (SIGILL, sigill_handler);
+ if (sigsetjmp (jmpbuf, 1)) {
+ signal (SIGILL, oldsig);
+ return accel;
+ }
+
+ canjump = 1;
+
+ /* pdist %f0, %f0, %f0 */
+ __asm__ __volatile__(".word\t0x81b007c0");
- asm volatile ("amask %1, %0"
- : "=r" (no_mvi)
- : "rI" (256)); /* AMASK_MVI */
- return no_mvi ? MPEG2_ACCEL_ALPHA : (MPEG2_ACCEL_ALPHA |
- MPEG2_ACCEL_ALPHA_MVI);
+ canjump = 0;
+ accel |= MPEG2_ACCEL_SPARC_VIS;
+
+ if (sigsetjmp (jmpbuf, 1)) {
+ signal (SIGILL, oldsig);
+ return accel;
+ }
+
+ canjump = 1;
+
+ /* edge8n %g0, %g0, %g0 */
+ __asm__ __volatile__(".word\t0x81b00020");
+
+ canjump = 0;
+ accel |= MPEG2_ACCEL_SPARC_VIS2;
+
+ signal (SIGILL, oldsig);
+ }
+#endif /* ACCEL_DETECT */
+
+ return accel;
}
-#endif /* ARCH_ALPHA */
-#endif
+#endif /* ARCH_SPARC */
-uint32_t mpeg2_detect_accel (void)
+#ifdef ARCH_ALPHA
+static inline uint32_t arch_accel (uint32_t accel)
{
- uint32_t accel;
+ if (accel & MPEG2_ACCEL_ALPHA_MVI)
+ accel |= MPEG2_ACCEL_ALPHA;
- accel = 0;
#ifdef ACCEL_DETECT
-#ifdef LIBMPEG2_MLIB
- accel = MPEG2_ACCEL_MLIB;
-#endif
-#if defined (ARCH_X86) || defined (ARCH_PPC) || defined (ARCH_ALPHA)
- accel |= arch_accel ();
-#endif
+ if (accel & MPEG2_ACCEL_DETECT) {
+ uint64_t no_mvi;
+
+ asm volatile ("amask %1, %0"
+ : "=r" (no_mvi)
+ : "rI" (256)); /* AMASK_MVI */
+ accel |= no_mvi ? MPEG2_ACCEL_ALPHA : (MPEG2_ACCEL_ALPHA |
+ MPEG2_ACCEL_ALPHA_MVI);
+ }
+#endif /* ACCEL_DETECT */
+
+ return accel;
+}
+#endif /* ARCH_ALPHA */
+
+uint32_t mpeg2_detect_accel (uint32_t accel)
+{
+#if defined (ARCH_X86) || defined (ARCH_PPC) || defined (ARCH_ALPHA) || defined (ARCH_SPARC)
+ accel = arch_accel (accel);
#endif
return accel;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-26 20:54:34 +0000