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authormarha <marha@users.sourceforge.net>2012-04-10 11:41:26 +0200
committermarha <marha@users.sourceforge.net>2012-04-10 11:41:26 +0200
commit67326634496ef21b4acbf4cef2f05040d34aef9b (patch)
treef19fba7c7b691e44cd97482644e383e09ab98c49 /openssl/crypto/ppccap.c
parentc6f80401dc533b04341afe8d596960d1bc25efce (diff)
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Update to openssl-1.0.1
Diffstat (limited to 'openssl/crypto/ppccap.c')
-rw-r--r--openssl/crypto/ppccap.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/openssl/crypto/ppccap.c b/openssl/crypto/ppccap.c
new file mode 100644
index 000000000..ab89ccaa1
--- /dev/null
+++ b/openssl/crypto/ppccap.c
@@ -0,0 +1,115 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <crypto.h>
+#include <openssl/bn.h>
+
+#define PPC_FPU64 (1<<0)
+#define PPC_ALTIVEC (1<<1)
+
+static int OPENSSL_ppccap_P = 0;
+
+static sigset_t all_masked;
+
+#ifdef OPENSSL_BN_ASM_MONT
+int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num)
+ {
+ int bn_mul_mont_fpu64(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num);
+ int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num);
+
+ if (sizeof(size_t)==4)
+ {
+#if (defined(__APPLE__) && defined(__MACH__))
+ if (num>=8 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
+ return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
+#else
+ /* boundary of 32 was experimentally determined on
+ Linux 2.6.22, might have to be adjusted on AIX... */
+ if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
+ {
+ sigset_t oset;
+ int ret;
+
+ sigprocmask(SIG_SETMASK,&all_masked,&oset);
+ ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
+ sigprocmask(SIG_SETMASK,&oset,NULL);
+
+ return ret;
+ }
+#endif
+ }
+ else if ((OPENSSL_ppccap_P&PPC_FPU64))
+ /* this is a "must" on POWER6, but run-time detection
+ * is not implemented yet... */
+ return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
+
+ return bn_mul_mont_int(rp,ap,bp,np,n0,num);
+ }
+#endif
+
+static sigjmp_buf ill_jmp;
+static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
+
+void OPENSSL_ppc64_probe(void);
+
+void OPENSSL_cpuid_setup(void)
+ {
+ char *e;
+ struct sigaction ill_oact,ill_act;
+ sigset_t oset;
+ static int trigger=0;
+
+ if (trigger) return;
+ trigger=1;
+
+ sigfillset(&all_masked);
+ sigdelset(&all_masked,SIGILL);
+ sigdelset(&all_masked,SIGTRAP);
+#ifdef SIGEMT
+ sigdelset(&all_masked,SIGEMT);
+#endif
+ sigdelset(&all_masked,SIGFPE);
+ sigdelset(&all_masked,SIGBUS);
+ sigdelset(&all_masked,SIGSEGV);
+
+ if ((e=getenv("OPENSSL_ppccap")))
+ {
+ OPENSSL_ppccap_P=strtoul(e,NULL,0);
+ return;
+ }
+
+ OPENSSL_ppccap_P = 0;
+
+ memset(&ill_act,0,sizeof(ill_act));
+ ill_act.sa_handler = ill_handler;
+ ill_act.sa_mask = all_masked;
+
+ sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
+ sigaction(SIGILL,&ill_act,&ill_oact);
+
+ if (sizeof(size_t)==4)
+ {
+ if (sigsetjmp(ill_jmp,1) == 0)
+ {
+ OPENSSL_ppc64_probe();
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ }
+ }
+ else
+ {
+ /*
+ * Wanted code detecting POWER6 CPU and setting PPC_FPU64
+ */
+ }
+
+ if (sigsetjmp(ill_jmp,1) == 0)
+ {
+ OPENSSL_altivec_probe();
+ OPENSSL_ppccap_P |= PPC_ALTIVEC;
+ }
+
+ sigaction (SIGILL,&ill_oact,NULL);
+ sigprocmask(SIG_SETMASK,&oset,NULL);
+ }