--- /dev/null
+/*
+ * 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>
+
+#if defined(USE_ARM_SIMD) && defined(_MSC_VER)
+/* Needed for EXCEPTION_ILLEGAL_INSTRUCTION */
+#include <windows.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>
+
+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 (__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>
+
+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__ && !__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);
+}
+
+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)
+
+#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 */
+
+#else /* linux ELF */
+
+#include <stdlib.h>
+#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 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;
+
+static void
+pixman_arm_read_auxv() {
+ 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;
+ if (getenv("ARM_FORCE_HWCAP"))
+ hwcap = strtoul(getenv("ARM_FORCE_HWCAP"), NULL, 0);
+ // 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 (getenv("ARM_FORCE_PLATFORM"))
+ plat = getenv("ARM_FORCE_PLATFORM");
+ 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);
+
+ // if we don't have 2.6.29, we have to do this hack; set
+ // the env var to trust HWCAP.
+ if (!getenv("ARM_TRUST_HWCAP") && arm_has_v7)
+ arm_has_neon = TRUE;
+ }
+
+ arm_tests_initialized = TRUE;
+}
+
+#if defined(USE_ARM_SIMD)
+pixman_bool_t
+pixman_have_arm_simd (void)
+{
+ if (!arm_tests_initialized)
+ pixman_arm_read_auxv();
+
+ 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();
+
+ return arm_has_neon;
+}
+#endif /* USE_ARM_NEON */
+
+#endif /* linux */
+
+#endif /* USE_ARM_SIMD || USE_ARM_NEON */
+
+#ifdef USE_MMX
+/* 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__)
+
+#ifdef HAVE_GETISAX
+#include <sys/auxv.h>
+#endif
+
+enum CPUFeatures {
+ NoFeatures = 0,
+ MMX = 0x1,
+ MMX_Extensions = 0x2,
+ SSE = 0x6,
+ SSE2 = 0x8,
+ CMOV = 0x10
+};
+
+static unsigned int detectCPUFeatures(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;
+}
+
+pixman_bool_t
+pixman_have_mmx (void)
+{
+ static pixman_bool_t initialized = FALSE;
+ static pixman_bool_t mmx_present;
+
+ if (!initialized)
+ {
+ unsigned int features = detectCPUFeatures();
+ mmx_present = (features & (MMX|MMX_Extensions)) == (MMX|MMX_Extensions);
+ initialized = TRUE;
+ }
+
+ return mmx_present;
+}
+
+#ifdef USE_SSE2
+pixman_bool_t
+pixman_have_sse2 (void)
+{
+ static pixman_bool_t initialized = FALSE;
+ static pixman_bool_t sse2_present;
+
+ if (!initialized)
+ {
+ unsigned int features = detectCPUFeatures();
+ sse2_present = (features & (MMX|MMX_Extensions|SSE|SSE2)) == (MMX|MMX_Extensions|SSE|SSE2);
+ initialized = TRUE;
+ }
+
+ return sse2_present;
+}
+#endif
+
+#endif /* __amd64__ */
+#endif
#include "pixman-arm-neon.h"
#include "pixman-combine32.h"
-#if defined(USE_ARM_SIMD) && defined(_MSC_VER)
-/* Needed for EXCEPTION_ILLEGAL_INSTRUCTION */
-#include <windows.h>
-#endif
-
#define FbFullMask(n) ((n) == 32 ? (uint32_t)-1 : ((((uint32_t) 1) << n) - 1))
#undef READ
}
-#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>
-
-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 (__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>
-
-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__ && !__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);
-}
-
-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)
-
-#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 */
-
-#else /* linux ELF */
-
-#include <stdlib.h>
-#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 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;
-
-static void
-pixman_arm_read_auxv() {
- 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;
- if (getenv("ARM_FORCE_HWCAP"))
- hwcap = strtoul(getenv("ARM_FORCE_HWCAP"), NULL, 0);
- // 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 (getenv("ARM_FORCE_PLATFORM"))
- plat = getenv("ARM_FORCE_PLATFORM");
- 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);
-
- // if we don't have 2.6.29, we have to do this hack; set
- // the env var to trust HWCAP.
- if (!getenv("ARM_TRUST_HWCAP") && arm_has_v7)
- arm_has_neon = TRUE;
- }
-
- arm_tests_initialized = TRUE;
-}
-
-#if defined(USE_ARM_SIMD)
-pixman_bool_t
-pixman_have_arm_simd (void)
-{
- if (!arm_tests_initialized)
- pixman_arm_read_auxv();
-
- 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();
-
- return arm_has_neon;
-}
-#endif /* USE_ARM_NEON */
-
-#endif /* linux */
-
-#endif /* USE_ARM_SIMD || USE_ARM_NEON */
-
-#ifdef USE_MMX
-/* 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__)
-
-#ifdef HAVE_GETISAX
-#include <sys/auxv.h>
-#endif
-
-enum CPUFeatures {
- NoFeatures = 0,
- MMX = 0x1,
- MMX_Extensions = 0x2,
- SSE = 0x6,
- SSE2 = 0x8,
- CMOV = 0x10
-};
-
-static unsigned int detectCPUFeatures(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;
-}
-
-pixman_bool_t
-pixman_have_mmx (void)
-{
- static pixman_bool_t initialized = FALSE;
- static pixman_bool_t mmx_present;
-
- if (!initialized)
- {
- unsigned int features = detectCPUFeatures();
- mmx_present = (features & (MMX|MMX_Extensions)) == (MMX|MMX_Extensions);
- initialized = TRUE;
- }
-
- return mmx_present;
-}
-
-#ifdef USE_SSE2
-pixman_bool_t
-pixman_have_sse2 (void)
-{
- static pixman_bool_t initialized = FALSE;
- static pixman_bool_t sse2_present;
-
- if (!initialized)
- {
- unsigned int features = detectCPUFeatures();
- sse2_present = (features & (MMX|MMX_Extensions|SSE|SSE2)) == (MMX|MMX_Extensions|SSE|SSE2);
- initialized = TRUE;
- }
-
- return sse2_present;
-}
-#endif
-
-#endif /* __amd64__ */
-#endif
projects / platform / upstream / pixman.git / commitdiff