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94 lines
2.1 KiB
94 lines
2.1 KiB
7 years ago
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diff --git a/crypto/armcap.c b/crypto/armcap.c
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index 5258d2f..efb4009 100644
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--- a/crypto/armcap.c
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+++ b/crypto/armcap.c
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@@ -9,11 +9,6 @@
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unsigned int OPENSSL_armcap_P;
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-static sigset_t all_masked;
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-
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-static sigjmp_buf ill_jmp;
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-static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
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-
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/*
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* Following subroutines could have been inlined, but it's not all
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* ARM compilers support inline assembler...
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@@ -29,24 +24,26 @@ unsigned int OPENSSL_rdtsc(void)
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return 0;
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}
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-#if defined(__GNUC__) && __GNUC__>=2
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-void OPENSSL_cpuid_setup(void) __attribute__((constructor));
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-#endif
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-void OPENSSL_cpuid_setup(void)
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+#if defined(__GLIBC__) && __GLIBC__>=2 && __GLIBC_MINOR__>=16
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+#include <sys/auxv.h>
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+
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+void OPENSSL_cpuid_find(void)
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+ {
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+ unsigned long hwcap = getauxval(AT_HWCAP);
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+ char *plat = (char *)getauxval(AT_PLATFORM);
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+
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+ OPENSSL_armcap_P |= hwcap & HWCAP_ARM_NEON ? ARMV7_NEON : 0;
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+ OPENSSL_armcap_P |= plat ? (plat[1] == '7' ? ARMV7_TICK : 0) : 0;
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+ }
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+#else
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+static sigset_t all_masked;
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+static sigjmp_buf ill_jmp;
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+static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
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+
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+void OPENSSL_cpuid_find(void)
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{
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- char *e;
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struct sigaction ill_oact,ill_act;
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sigset_t oset;
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- static int trigger=0;
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-
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- if (trigger) return;
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- trigger=1;
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-
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- if ((e=getenv("OPENSSL_armcap")))
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- {
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- OPENSSL_armcap_P=strtoul(e,NULL,0);
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- return;
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- }
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sigfillset(&all_masked);
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sigdelset(&all_masked,SIGILL);
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@@ -55,8 +52,6 @@ void OPENSSL_cpuid_setup(void)
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sigdelset(&all_masked,SIGBUS);
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sigdelset(&all_masked,SIGSEGV);
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- OPENSSL_armcap_P = 0;
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-
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memset(&ill_act,0,sizeof(ill_act));
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ill_act.sa_handler = ill_handler;
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ill_act.sa_mask = all_masked;
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@@ -78,3 +73,25 @@ void OPENSSL_cpuid_setup(void)
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sigaction (SIGILL,&ill_oact,NULL);
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sigprocmask(SIG_SETMASK,&oset,NULL);
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}
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+#endif
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+
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+#if defined(__GNUC__) && __GNUC__>=2
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+void OPENSSL_cpuid_setup(void) __attribute__((constructor));
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+#endif
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+void OPENSSL_cpuid_setup(void)
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+ {
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+ char *e;
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+ static int trigger=0;
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+
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+ if (trigger) return;
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+ trigger=1;
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+
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+ if ((e=getenv("OPENSSL_armcap")))
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+ {
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+ OPENSSL_armcap_P=strtoul(e,NULL,0);
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+ return;
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+ }
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+
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+ OPENSSL_armcap_P = 0;
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+ OPENSSL_cpuid_find();
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+ }
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