diff options
Diffstat (limited to 'pixman/pixman/pixman-cpu.c')
| -rw-r--r-- | pixman/pixman/pixman-cpu.c | 815 |
1 files changed, 0 insertions, 815 deletions
diff --git a/pixman/pixman/pixman-cpu.c b/pixman/pixman/pixman-cpu.c deleted file mode 100644 index aa9036fa2..000000000 --- a/pixman/pixman/pixman-cpu.c +++ /dev/null @@ -1,815 +0,0 @@ -/* - * 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 <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 - -#include "pixman-private.h" - -#ifdef USE_VMX - -/* The CPU detection code needs to be in a file not compiled with - * "-maltivec -mabi=altivec", as gcc would try to save vector register - * across function calls causing SIGILL on cpus without Altivec/vmx. - */ -static pixman_bool_t initialized = FALSE; -static volatile pixman_bool_t have_vmx = TRUE; - -#ifdef __APPLE__ -#include <sys/sysctl.h> - -static pixman_bool_t -pixman_have_vmx (void) -{ - if (!initialized) - { - size_t length = sizeof(have_vmx); - int error = - sysctlbyname ("hw.optional.altivec", &have_vmx, &length, NULL, 0); - - if (error) - have_vmx = FALSE; - - initialized = TRUE; - } - return have_vmx; -} - -#elif defined (__OpenBSD__) -#include <sys/param.h> -#include <sys/sysctl.h> -#include <machine/cpu.h> - -static pixman_bool_t -pixman_have_vmx (void) -{ - if (!initialized) - { - int mib[2] = { CTL_MACHDEP, CPU_ALTIVEC }; - size_t length = sizeof(have_vmx); - int error = - sysctl (mib, 2, &have_vmx, &length, NULL, 0); - - if (error != 0) - have_vmx = FALSE; - - initialized = TRUE; - } - return have_vmx; -} - -#elif defined (__linux__) -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <stdio.h> -#include <linux/auxvec.h> -#include <asm/cputable.h> - -static pixman_bool_t -pixman_have_vmx (void) -{ - if (!initialized) - { - char fname[64]; - unsigned long buf[64]; - ssize_t count = 0; - pid_t pid; - int fd, i; - - pid = getpid (); - snprintf (fname, sizeof(fname) - 1, "/proc/%d/auxv", pid); - - fd = open (fname, O_RDONLY); - if (fd >= 0) - { - for (i = 0; i <= (count / sizeof(unsigned long)); i += 2) - { - /* Read more if buf is empty... */ - if (i == (count / sizeof(unsigned long))) - { - count = read (fd, buf, sizeof(buf)); - if (count <= 0) - break; - i = 0; - } - - if (buf[i] == AT_HWCAP) - { - have_vmx = !!(buf[i + 1] & PPC_FEATURE_HAS_ALTIVEC); - initialized = TRUE; - break; - } - else if (buf[i] == AT_NULL) - { - break; - } - } - close (fd); - } - } - if (!initialized) - { - /* Something went wrong. Assume 'no' rather than playing - fragile tricks with catching SIGILL. */ - have_vmx = FALSE; - initialized = TRUE; - } - - return have_vmx; -} - -#else /* !__APPLE__ && !__OpenBSD__ && !__linux__ */ -#include <signal.h> -#include <setjmp.h> - -static jmp_buf jump_env; - -static void -vmx_test (int sig, - siginfo_t *si, - void * unused) -{ - longjmp (jump_env, 1); -} - -static pixman_bool_t -pixman_have_vmx (void) -{ - struct sigaction sa, osa; - int jmp_result; - - if (!initialized) - { - sa.sa_flags = SA_SIGINFO; - sigemptyset (&sa.sa_mask); - sa.sa_sigaction = vmx_test; - sigaction (SIGILL, &sa, &osa); - jmp_result = setjmp (jump_env); - if (jmp_result == 0) - { - asm volatile ( "vor 0, 0, 0" ); - } - sigaction (SIGILL, &osa, NULL); - have_vmx = (jmp_result == 0); - initialized = TRUE; - } - return have_vmx; -} - -#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 */ - -static pixman_bool_t -pixman_have_mips_feature (const char *search_string) -{ - const char *file_name = "/proc/cpuinfo"; - /* Simple detection of MIPS features at runtime for Linux. - * It is based on /proc/cpuinfo, which reveals hardware configuration - * to user-space applications. According to MIPS (early 2010), no similar - * facility is universally available on the MIPS architectures, so it's up - * to individual OSes to provide such. - */ - - char cpuinfo_line[256]; - - FILE *f = NULL; - - if ((f = fopen (file_name, "r")) == NULL) - return FALSE; - - while (fgets (cpuinfo_line, sizeof (cpuinfo_line), f) != NULL) - { - if (strstr (cpuinfo_line, search_string) != NULL) - { - fclose (f); - return TRUE; - } - } - - fclose (f); - - /* Did not find string in the proc file. */ - return FALSE; -} - -#if defined(USE_MIPS_DSPR2) -pixman_bool_t -pixman_have_mips_dspr2 (void) -{ - /* Only currently available MIPS core that supports DSPr2 is 74K. */ - return pixman_have_mips_feature ("MIPS 74K"); -} -#endif - -#if defined(USE_LOONGSON_MMI) -pixman_bool_t -pixman_have_loongson_mmi (void) -{ - /* I really don't know if some Loongson CPUs don't have MMI. */ - return pixman_have_mips_feature ("Loongson"); -} -#endif - -#else /* linux ELF */ - -#define pixman_have_mips_dspr2() FALSE -#define pixman_have_loongson_mmi() FALSE - -#endif /* linux ELF */ - -#endif /* USE_MIPS_DSPR2 || USE_LOONGSON_MMI */ - -#if defined(USE_X86_MMX) || defined(USE_SSE2) -/* The CPU detection code needs to be in a file not compiled with - * "-mmmx -msse", as gcc would generate CMOV instructions otherwise - * that would lead to SIGILL instructions on old CPUs that don't have - * it. - */ -#if !defined(__amd64__) && !defined(__x86_64__) && !defined(_M_AMD64) - -#ifdef HAVE_GETISAX -#include <sys/auxv.h> -#endif - -typedef enum -{ - NO_FEATURES = 0, - MMX = 0x1, - MMX_EXTENSIONS = 0x2, - SSE = 0x6, - SSE2 = 0x8, - CMOV = 0x10 -} cpu_features_t; - - -static unsigned int -detect_cpu_features (void) -{ - unsigned int features = 0; - unsigned int result = 0; - -#ifdef HAVE_GETISAX - if (getisax (&result, 1)) - { - if (result & AV_386_CMOV) - features |= CMOV; - if (result & AV_386_MMX) - features |= MMX; - if (result & AV_386_AMD_MMX) - features |= MMX_EXTENSIONS; - if (result & AV_386_SSE) - features |= SSE; - if (result & AV_386_SSE2) - features |= SSE2; - } -#else - char vendor[13]; -#ifdef _MSC_VER - int vendor0 = 0, vendor1, vendor2; -#endif - vendor[0] = 0; - vendor[12] = 0; - -#ifdef __GNUC__ - /* see p. 118 of amd64 instruction set manual Vol3 */ - /* We need to be careful about the handling of %ebx and - * %esp here. We can't declare either one as clobbered - * since they are special registers (%ebx is the "PIC - * register" holding an offset to global data, %esp the - * stack pointer), so we need to make sure they have their - * original values when we access the output operands. - */ - __asm__ ( - "pushf\n" - "pop %%eax\n" - "mov %%eax, %%ecx\n" - "xor $0x00200000, %%eax\n" - "push %%eax\n" - "popf\n" - "pushf\n" - "pop %%eax\n" - "mov $0x0, %%edx\n" - "xor %%ecx, %%eax\n" - "jz 1f\n" - - "mov $0x00000000, %%eax\n" - "push %%ebx\n" - "cpuid\n" - "mov %%ebx, %%eax\n" - "pop %%ebx\n" - "mov %%eax, %1\n" - "mov %%edx, %2\n" - "mov %%ecx, %3\n" - "mov $0x00000001, %%eax\n" - "push %%ebx\n" - "cpuid\n" - "pop %%ebx\n" - "1:\n" - "mov %%edx, %0\n" - : "=r" (result), - "=m" (vendor[0]), - "=m" (vendor[4]), - "=m" (vendor[8]) - : - : "%eax", "%ecx", "%edx" - ); - -#elif defined (_MSC_VER) - - _asm { - pushfd - pop eax - mov ecx, eax - xor eax, 00200000h - push eax - popfd - pushfd - pop eax - mov edx, 0 - xor eax, ecx - jz nocpuid - - mov eax, 0 - push ebx - cpuid - mov eax, ebx - pop ebx - mov vendor0, eax - mov vendor1, edx - mov vendor2, ecx - mov eax, 1 - push ebx - cpuid - pop ebx - nocpuid: - mov result, edx - } - memmove (vendor + 0, &vendor0, 4); - memmove (vendor + 4, &vendor1, 4); - memmove (vendor + 8, &vendor2, 4); - -#else -# error unsupported compiler -#endif - - features = 0; - if (result) - { - /* result now contains the standard feature bits */ - if (result & (1 << 15)) - features |= CMOV; - if (result & (1 << 23)) - features |= MMX; - if (result & (1 << 25)) - features |= SSE; - if (result & (1 << 26)) - features |= SSE2; - if ((features & MMX) && !(features & SSE) && - (strcmp (vendor, "AuthenticAMD") == 0 || - strcmp (vendor, "Geode by NSC") == 0)) - { - /* check for AMD MMX extensions */ -#ifdef __GNUC__ - __asm__ ( - " push %%ebx\n" - " mov $0x80000000, %%eax\n" - " cpuid\n" - " xor %%edx, %%edx\n" - " cmp $0x1, %%eax\n" - " jge 2f\n" - " mov $0x80000001, %%eax\n" - " cpuid\n" - "2:\n" - " pop %%ebx\n" - " mov %%edx, %0\n" - : "=r" (result) - : - : "%eax", "%ecx", "%edx" - ); -#elif defined _MSC_VER - _asm { - push ebx - mov eax, 80000000h - cpuid - xor edx, edx - cmp eax, 1 - jge notamd - mov eax, 80000001h - cpuid - notamd: - pop ebx - mov result, edx - } -#endif - if (result & (1 << 22)) - features |= MMX_EXTENSIONS; - } - } -#endif /* HAVE_GETISAX */ - - return features; -} - -#ifdef USE_X86_MMX -static pixman_bool_t -pixman_have_mmx (void) -{ - static pixman_bool_t initialized = FALSE; - static pixman_bool_t mmx_present; - - if (!initialized) - { - unsigned int features = detect_cpu_features (); - mmx_present = (features & (MMX | MMX_EXTENSIONS)) == (MMX | MMX_EXTENSIONS); - initialized = TRUE; - } - - return mmx_present; -} -#endif - -#ifdef USE_SSE2 -static pixman_bool_t -pixman_have_sse2 (void) -{ - static pixman_bool_t initialized = FALSE; - static pixman_bool_t sse2_present; - - if (!initialized) - { - unsigned int features = detect_cpu_features (); - sse2_present = (features & (MMX | MMX_EXTENSIONS | SSE | SSE2)) == (MMX | MMX_EXTENSIONS | SSE | SSE2); - initialized = TRUE; - } - - return sse2_present; -} - -#endif - -#else /* __amd64__ */ -#ifdef USE_X86_MMX -#define pixman_have_mmx() TRUE -#endif -#ifdef USE_SSE2 -#define pixman_have_sse2() TRUE -#endif -#endif /* __amd64__ */ -#endif - -static pixman_bool_t -disabled (const char *name) -{ - const char *env; - - if ((env = getenv ("PIXMAN_DISABLE"))) - { - do - { - const char *end; - int len; - - if ((end = strchr (env, ' '))) - len = end - env; - else - len = strlen (env); - - if (strlen (name) == len && strncmp (name, env, len) == 0) - { - printf ("pixman: Disabled %s implementation\n", name); - return TRUE; - } - - env += len; - } - while (*env++); - } - - return FALSE; -} - -pixman_implementation_t * -_pixman_choose_implementation (void) -{ - pixman_implementation_t *imp; - - imp = _pixman_implementation_create_general(); - - if (!disabled ("fast")) - imp = _pixman_implementation_create_fast_path (imp); - -#ifdef USE_X86_MMX - if (!disabled ("mmx") && pixman_have_mmx ()) - imp = _pixman_implementation_create_mmx (imp); -#endif - -#ifdef USE_SSE2 - if (!disabled ("sse2") && pixman_have_sse2 ()) - imp = _pixman_implementation_create_sse2 (imp); -#endif - -#ifdef USE_ARM_SIMD - if (!disabled ("arm-simd") && pixman_have_arm_simd ()) - imp = _pixman_implementation_create_arm_simd (imp); -#endif - -#ifdef USE_ARM_IWMMXT - if (!disabled ("arm-iwmmxt") && pixman_have_arm_iwmmxt ()) - imp = _pixman_implementation_create_mmx (imp); -#endif -#ifdef USE_LOONGSON_MMI - if (!disabled ("loongson-mmi") && pixman_have_loongson_mmi ()) - imp = _pixman_implementation_create_mmx (imp); -#endif -#ifdef USE_ARM_NEON - if (!disabled ("arm-neon") && pixman_have_arm_neon ()) - imp = _pixman_implementation_create_arm_neon (imp); -#endif - -#ifdef USE_MIPS_DSPR2 - if (!disabled ("mips-dspr2") && pixman_have_mips_dspr2 ()) - imp = _pixman_implementation_create_mips_dspr2 (imp); -#endif - -#ifdef USE_VMX - if (!disabled ("vmx") && pixman_have_vmx ()) - imp = _pixman_implementation_create_vmx (imp); -#endif - - imp = _pixman_implementation_create_noop (imp); - - return imp; -} - |