[Pixman] [PATCH 03/10] Move ARM specific CPU detection to a new file pixman-arm.c
Søren Sandmann Pedersen
sandmann at cs.au.dk
Fri Jun 29 13:44:48 PDT 2012
From: Søren Sandmann Pedersen <ssp at redhat.com>
Similar to the x86 commit, this moves the ARM specific CPU detection
to its own file which exports a pixman_arm_get_implementations()
function that is supposed to be a noop on non-ARM.
---
pixman/Makefile.sources | 1 +
pixman/pixman-arm.c | 295 +++++++++++++++++++++++++++++++++++++++++++++++
pixman/pixman-cpu.c | 254 +---------------------------------------
pixman/pixman-private.h | 3 +
4 files changed, 300 insertions(+), 253 deletions(-)
create mode 100644 pixman/pixman-arm.c
diff --git a/pixman/Makefile.sources b/pixman/Makefile.sources
index 4e0137a..7f2b75f 100644
--- a/pixman/Makefile.sources
+++ b/pixman/Makefile.sources
@@ -8,6 +8,7 @@ libpixman_sources = \
pixman-conical-gradient.c \
pixman-cpu.c \
pixman-x86.c \
+ pixman-arm.c \
pixman-edge.c \
pixman-edge-accessors.c \
pixman-fast-path.c \
diff --git a/pixman/pixman-arm.c b/pixman/pixman-arm.c
new file mode 100644
index 0000000..6625d7f
--- /dev/null
+++ b/pixman/pixman-arm.c
@@ -0,0 +1,295 @@
+/*
+ * Copyright © 2000 SuSE, Inc.
+ * Copyright © 2007 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. SuSE makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "pixman-private.h"
+
+#if defined(USE_ARM_SIMD) || defined(USE_ARM_NEON) || defined(USE_ARM_IWMMXT)
+
+#include <string.h>
+#include <stdlib.h>
+
+#if defined(USE_ARM_SIMD) && defined(_MSC_VER)
+/* Needed for EXCEPTION_ILLEGAL_INSTRUCTION */
+#include <windows.h>
+#endif
+
+#if defined(__APPLE__)
+#include "TargetConditionals.h"
+#endif
+
+#if defined(_MSC_VER)
+
+#if defined(USE_ARM_SIMD)
+extern int pixman_msvc_try_arm_simd_op ();
+
+pixman_bool_t
+pixman_have_arm_simd (void)
+{
+ static pixman_bool_t initialized = FALSE;
+ static pixman_bool_t have_arm_simd = FALSE;
+
+ if (!initialized)
+ {
+ __try {
+ pixman_msvc_try_arm_simd_op ();
+ have_arm_simd = TRUE;
+ } __except (GetExceptionCode () == EXCEPTION_ILLEGAL_INSTRUCTION) {
+ have_arm_simd = FALSE;
+ }
+ initialized = TRUE;
+ }
+
+ return have_arm_simd;
+}
+
+#endif /* USE_ARM_SIMD */
+
+#if defined(USE_ARM_NEON)
+extern int pixman_msvc_try_arm_neon_op ();
+
+pixman_bool_t
+pixman_have_arm_neon (void)
+{
+ static pixman_bool_t initialized = FALSE;
+ static pixman_bool_t have_arm_neon = FALSE;
+
+ if (!initialized)
+ {
+ __try
+ {
+ pixman_msvc_try_arm_neon_op ();
+ have_arm_neon = TRUE;
+ }
+ __except (GetExceptionCode () == EXCEPTION_ILLEGAL_INSTRUCTION)
+ {
+ have_arm_neon = FALSE;
+ }
+ initialized = TRUE;
+ }
+
+ return have_arm_neon;
+}
+
+#endif /* USE_ARM_NEON */
+
+#elif (defined (__APPLE__) && defined(TARGET_OS_IPHONE)) /* iOS (iPhone/iPad/iPod touch) */
+
+/* Detection of ARM NEON on iOS is fairly simple because iOS binaries
+ * contain separate executable images for each processor architecture.
+ * So all we have to do is detect the armv7 architecture build. The
+ * operating system automatically runs the armv7 binary for armv7 devices
+ * and the armv6 binary for armv6 devices.
+ */
+
+pixman_bool_t
+pixman_have_arm_simd (void)
+{
+#if defined(USE_ARM_SIMD)
+ return TRUE;
+#else
+ return FALSE;
+#endif
+}
+
+pixman_bool_t
+pixman_have_arm_neon (void)
+{
+#if defined(USE_ARM_NEON) && defined(__ARM_NEON__)
+ /* This is an armv7 cpu build */
+ return TRUE;
+#else
+ /* This is an armv6 cpu build */
+ return FALSE;
+#endif
+}
+
+pixman_bool_t
+pixman_have_arm_iwmmxt (void)
+{
+#if defined(USE_ARM_IWMMXT)
+ return FALSE;
+#else
+ return FALSE;
+#endif
+}
+
+#elif defined (__linux__) || defined(__ANDROID__) || defined(ANDROID) /* linux ELF or ANDROID */
+
+static pixman_bool_t arm_has_v7 = FALSE;
+static pixman_bool_t arm_has_v6 = FALSE;
+static pixman_bool_t arm_has_vfp = FALSE;
+static pixman_bool_t arm_has_neon = FALSE;
+static pixman_bool_t arm_has_iwmmxt = FALSE;
+static pixman_bool_t arm_tests_initialized = FALSE;
+
+#if defined(__ANDROID__) || defined(ANDROID) /* Android device support */
+
+#include <cpu-features.h>
+
+static void
+pixman_arm_read_auxv_or_cpu_features ()
+{
+ AndroidCpuFamily cpu_family;
+ uint64_t cpu_features;
+
+ cpu_family = android_getCpuFamily();
+ cpu_features = android_getCpuFeatures();
+
+ if (cpu_family == ANDROID_CPU_FAMILY_ARM)
+ {
+ if (cpu_features & ANDROID_CPU_ARM_FEATURE_ARMv7)
+ arm_has_v7 = TRUE;
+
+ if (cpu_features & ANDROID_CPU_ARM_FEATURE_VFPv3)
+ arm_has_vfp = TRUE;
+
+ if (cpu_features & ANDROID_CPU_ARM_FEATURE_NEON)
+ arm_has_neon = TRUE;
+ }
+
+ arm_tests_initialized = TRUE;
+}
+
+#elif defined (__linux__) /* linux ELF */
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <string.h>
+#include <elf.h>
+
+static void
+pixman_arm_read_auxv_or_cpu_features ()
+{
+ int fd;
+ Elf32_auxv_t aux;
+
+ fd = open ("/proc/self/auxv", O_RDONLY);
+ if (fd >= 0)
+ {
+ while (read (fd, &aux, sizeof(Elf32_auxv_t)) == sizeof(Elf32_auxv_t))
+ {
+ if (aux.a_type == AT_HWCAP)
+ {
+ uint32_t hwcap = aux.a_un.a_val;
+ /* hardcode these values to avoid depending on specific
+ * versions of the hwcap header, e.g. HWCAP_NEON
+ */
+ arm_has_vfp = (hwcap & 64) != 0;
+ arm_has_iwmmxt = (hwcap & 512) != 0;
+ /* this flag is only present on kernel 2.6.29 */
+ arm_has_neon = (hwcap & 4096) != 0;
+ }
+ else if (aux.a_type == AT_PLATFORM)
+ {
+ const char *plat = (const char*) aux.a_un.a_val;
+ if (strncmp (plat, "v7l", 3) == 0)
+ {
+ arm_has_v7 = TRUE;
+ arm_has_v6 = TRUE;
+ }
+ else if (strncmp (plat, "v6l", 3) == 0)
+ {
+ arm_has_v6 = TRUE;
+ }
+ }
+ }
+ close (fd);
+ }
+
+ arm_tests_initialized = TRUE;
+}
+
+#endif /* Linux elf */
+
+#if defined(USE_ARM_SIMD)
+pixman_bool_t
+pixman_have_arm_simd (void)
+{
+ if (!arm_tests_initialized)
+ pixman_arm_read_auxv_or_cpu_features ();
+
+ return arm_has_v6;
+}
+
+#endif /* USE_ARM_SIMD */
+
+#if defined(USE_ARM_NEON)
+pixman_bool_t
+pixman_have_arm_neon (void)
+{
+ if (!arm_tests_initialized)
+ pixman_arm_read_auxv_or_cpu_features ();
+
+ return arm_has_neon;
+}
+
+#endif /* USE_ARM_NEON */
+
+#if defined(USE_ARM_IWMMXT)
+pixman_bool_t
+pixman_have_arm_iwmmxt (void)
+{
+ if (!arm_tests_initialized)
+ pixman_arm_read_auxv_or_cpu_features ();
+
+ return arm_has_iwmmxt;
+}
+
+#endif /* USE_ARM_IWMMXT */
+
+#else /* !_MSC_VER && !Linux elf && !Android */
+
+#define pixman_have_arm_simd() FALSE
+#define pixman_have_arm_neon() FALSE
+#define pixman_have_arm_iwmmxt() FALSE
+
+#endif
+
+#endif /* USE_ARM_SIMD || USE_ARM_NEON || USE_ARM_IWMMXT */
+
+pixman_implementation_t *
+_pixman_arm_get_implementations (pixman_implementation_t *imp)
+{
+#ifdef USE_ARM_SIMD
+ if (!_pixman_disabled ("arm-simd") && pixman_have_arm_simd ())
+ imp = _pixman_implementation_create_arm_simd (imp);
+#endif
+
+#ifdef USE_ARM_IWMMXT
+ if (!_pixman_disabled ("arm-iwmmxt") && pixman_have_arm_iwmmxt ())
+ imp = _pixman_implementation_create_mmx (imp);
+#endif
+
+#ifdef USE_ARM_NEON
+ if (!_pixman_disabled ("arm-neon") && pixman_have_arm_neon ())
+ imp = _pixman_implementation_create_arm_neon (imp);
+#endif
+
+ return imp;
+}
+
diff --git a/pixman/pixman-cpu.c b/pixman/pixman-cpu.c
index 0bfc90f..319d71f 100644
--- a/pixman/pixman-cpu.c
+++ b/pixman/pixman-cpu.c
@@ -26,11 +26,6 @@
#include <string.h>
#include <stdlib.h>
-#if defined(USE_ARM_SIMD) && defined(_MSC_VER)
-/* Needed for EXCEPTION_ILLEGAL_INSTRUCTION */
-#include <windows.h>
-#endif
-
#if defined(__APPLE__)
#include "TargetConditionals.h"
#endif
@@ -192,241 +187,6 @@ pixman_have_vmx (void)
#endif /* __APPLE__ */
#endif /* USE_VMX */
-#if defined(USE_ARM_SIMD) || defined(USE_ARM_NEON) || defined(USE_ARM_IWMMXT)
-
-#if defined(_MSC_VER)
-
-#if defined(USE_ARM_SIMD)
-extern int pixman_msvc_try_arm_simd_op ();
-
-pixman_bool_t
-pixman_have_arm_simd (void)
-{
- static pixman_bool_t initialized = FALSE;
- static pixman_bool_t have_arm_simd = FALSE;
-
- if (!initialized)
- {
- __try {
- pixman_msvc_try_arm_simd_op ();
- have_arm_simd = TRUE;
- } __except (GetExceptionCode () == EXCEPTION_ILLEGAL_INSTRUCTION) {
- have_arm_simd = FALSE;
- }
- initialized = TRUE;
- }
-
- return have_arm_simd;
-}
-
-#endif /* USE_ARM_SIMD */
-
-#if defined(USE_ARM_NEON)
-extern int pixman_msvc_try_arm_neon_op ();
-
-pixman_bool_t
-pixman_have_arm_neon (void)
-{
- static pixman_bool_t initialized = FALSE;
- static pixman_bool_t have_arm_neon = FALSE;
-
- if (!initialized)
- {
- __try
- {
- pixman_msvc_try_arm_neon_op ();
- have_arm_neon = TRUE;
- }
- __except (GetExceptionCode () == EXCEPTION_ILLEGAL_INSTRUCTION)
- {
- have_arm_neon = FALSE;
- }
- initialized = TRUE;
- }
-
- return have_arm_neon;
-}
-
-#endif /* USE_ARM_NEON */
-
-#elif (defined (__APPLE__) && defined(TARGET_OS_IPHONE)) /* iOS (iPhone/iPad/iPod touch) */
-
-/* Detection of ARM NEON on iOS is fairly simple because iOS binaries
- * contain separate executable images for each processor architecture.
- * So all we have to do is detect the armv7 architecture build. The
- * operating system automatically runs the armv7 binary for armv7 devices
- * and the armv6 binary for armv6 devices.
- */
-
-pixman_bool_t
-pixman_have_arm_simd (void)
-{
-#if defined(USE_ARM_SIMD)
- return TRUE;
-#else
- return FALSE;
-#endif
-}
-
-pixman_bool_t
-pixman_have_arm_neon (void)
-{
-#if defined(USE_ARM_NEON) && defined(__ARM_NEON__)
- /* This is an armv7 cpu build */
- return TRUE;
-#else
- /* This is an armv6 cpu build */
- return FALSE;
-#endif
-}
-
-pixman_bool_t
-pixman_have_arm_iwmmxt (void)
-{
-#if defined(USE_ARM_IWMMXT)
- return FALSE;
-#else
- return FALSE;
-#endif
-}
-
-#elif defined (__linux__) || defined(__ANDROID__) || defined(ANDROID) /* linux ELF or ANDROID */
-
-static pixman_bool_t arm_has_v7 = FALSE;
-static pixman_bool_t arm_has_v6 = FALSE;
-static pixman_bool_t arm_has_vfp = FALSE;
-static pixman_bool_t arm_has_neon = FALSE;
-static pixman_bool_t arm_has_iwmmxt = FALSE;
-static pixman_bool_t arm_tests_initialized = FALSE;
-
-#if defined(__ANDROID__) || defined(ANDROID) /* Android device support */
-
-#include <cpu-features.h>
-
-static void
-pixman_arm_read_auxv_or_cpu_features ()
-{
- AndroidCpuFamily cpu_family;
- uint64_t cpu_features;
-
- cpu_family = android_getCpuFamily();
- cpu_features = android_getCpuFeatures();
-
- if (cpu_family == ANDROID_CPU_FAMILY_ARM)
- {
- if (cpu_features & ANDROID_CPU_ARM_FEATURE_ARMv7)
- arm_has_v7 = TRUE;
-
- if (cpu_features & ANDROID_CPU_ARM_FEATURE_VFPv3)
- arm_has_vfp = TRUE;
-
- if (cpu_features & ANDROID_CPU_ARM_FEATURE_NEON)
- arm_has_neon = TRUE;
- }
-
- arm_tests_initialized = TRUE;
-}
-
-#elif defined (__linux__) /* linux ELF */
-
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <string.h>
-#include <elf.h>
-
-static void
-pixman_arm_read_auxv_or_cpu_features ()
-{
- int fd;
- Elf32_auxv_t aux;
-
- fd = open ("/proc/self/auxv", O_RDONLY);
- if (fd >= 0)
- {
- while (read (fd, &aux, sizeof(Elf32_auxv_t)) == sizeof(Elf32_auxv_t))
- {
- if (aux.a_type == AT_HWCAP)
- {
- uint32_t hwcap = aux.a_un.a_val;
- /* hardcode these values to avoid depending on specific
- * versions of the hwcap header, e.g. HWCAP_NEON
- */
- arm_has_vfp = (hwcap & 64) != 0;
- arm_has_iwmmxt = (hwcap & 512) != 0;
- /* this flag is only present on kernel 2.6.29 */
- arm_has_neon = (hwcap & 4096) != 0;
- }
- else if (aux.a_type == AT_PLATFORM)
- {
- const char *plat = (const char*) aux.a_un.a_val;
- if (strncmp (plat, "v7l", 3) == 0)
- {
- arm_has_v7 = TRUE;
- arm_has_v6 = TRUE;
- }
- else if (strncmp (plat, "v6l", 3) == 0)
- {
- arm_has_v6 = TRUE;
- }
- }
- }
- close (fd);
- }
-
- arm_tests_initialized = TRUE;
-}
-
-#endif /* Linux elf */
-
-#if defined(USE_ARM_SIMD)
-pixman_bool_t
-pixman_have_arm_simd (void)
-{
- if (!arm_tests_initialized)
- pixman_arm_read_auxv_or_cpu_features ();
-
- return arm_has_v6;
-}
-
-#endif /* USE_ARM_SIMD */
-
-#if defined(USE_ARM_NEON)
-pixman_bool_t
-pixman_have_arm_neon (void)
-{
- if (!arm_tests_initialized)
- pixman_arm_read_auxv_or_cpu_features ();
-
- return arm_has_neon;
-}
-
-#endif /* USE_ARM_NEON */
-
-#if defined(USE_ARM_IWMMXT)
-pixman_bool_t
-pixman_have_arm_iwmmxt (void)
-{
- if (!arm_tests_initialized)
- pixman_arm_read_auxv_or_cpu_features ();
-
- return arm_has_iwmmxt;
-}
-
-#endif /* USE_ARM_IWMMXT */
-
-#else /* !_MSC_VER && !Linux elf && !Android */
-
-#define pixman_have_arm_simd() FALSE
-#define pixman_have_arm_neon() FALSE
-#define pixman_have_arm_iwmmxt() FALSE
-
-#endif
-
-#endif /* USE_ARM_SIMD || USE_ARM_NEON || USE_ARM_IWMMXT */
-
#if defined(USE_MIPS_DSPR2) || defined(USE_LOONGSON_MMI)
#if defined (__linux__) /* linux ELF */
@@ -533,24 +293,12 @@ _pixman_choose_implementation (void)
imp = _pixman_implementation_create_fast_path (imp);
imp = _pixman_x86_get_implementations (imp);
+ imp = _pixman_arm_get_implementations (imp);
-#ifdef USE_ARM_SIMD
- if (!_pixman_disabled ("arm-simd") && pixman_have_arm_simd ())
- imp = _pixman_implementation_create_arm_simd (imp);
-#endif
-
-#ifdef USE_ARM_IWMMXT
- if (!_pixman_disabled ("arm-iwmmxt") && pixman_have_arm_iwmmxt ())
- imp = _pixman_implementation_create_mmx (imp);
-#endif
#ifdef USE_LOONGSON_MMI
if (!_pixman_disabled ("loongson-mmi") && pixman_have_loongson_mmi ())
imp = _pixman_implementation_create_mmx (imp);
#endif
-#ifdef USE_ARM_NEON
- if (!_pixman_disabled ("arm-neon") && pixman_have_arm_neon ())
- imp = _pixman_implementation_create_arm_neon (imp);
-#endif
#ifdef USE_MIPS_DSPR2
if (!_pixman_disabled ("mips-dspr2") && pixman_have_mips_dspr2 ())
diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h
index 9d411d4..301b748 100644
--- a/pixman/pixman-private.h
+++ b/pixman/pixman-private.h
@@ -578,6 +578,9 @@ pixman_implementation_t *
_pixman_x86_get_implementations (pixman_implementation_t *imp);
pixman_implementation_t *
+_pixman_arm_get_implementations (pixman_implementation_t *imp);
+
+pixman_implementation_t *
_pixman_choose_implementation (void);
pixman_bool_t
--
1.7.10.4
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