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crypto/ppc[cpuid|cap]: call CPU detection once and detect AltiVec.

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This commit is contained in:
Andy Polyakov 2010-09-10 15:00:51 +00:00
parent dd4a0af370
commit 6415dd7b2f
2 changed files with 39 additions and 16 deletions
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49
crypto/ppccap.c
View File

@ -6,6 +6,7 @@
#include <openssl/bn.h>
#define PPC_FPU64 (1<<0)
#define PPC_ALTIVEC (1<<1)
static int OPENSSL_ppccap_P = 0;
@ -39,7 +40,7 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_U
#endif
}
else if ((OPENSSL_ppccap_P&PPC_FPU64))
/* this is a "must" on Power 6, but run-time detection
/* 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);
@ -55,7 +56,13 @@ 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);
@ -72,26 +79,36 @@ void OPENSSL_cpuid_setup(void)
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)
{
struct sigaction ill_oact,ill_act;
sigset_t oset;
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 (sigsetjmp(ill_jmp,0) == 0)
if (sigsetjmp(ill_jmp,1) == 0)
{
OPENSSL_ppc64_probe();
OPENSSL_ppccap_P |= PPC_FPU64;
}
else
{
OPENSSL_ppccap_P &= ~PPC_FPU64;
}
sigaction (SIGILL,&ill_oact,NULL);
sigprocmask(SIG_SETMASK,&oset,NULL);
}
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);
}

6
crypto/ppccpuid.pl
View File

@ -30,6 +30,12 @@ $code=<<___;
extrdi r0,r0,32,0
blr
.globl .OPENSSL_altivec_probe
.align 4
.OPENSSL_altivec_probe:
.long 0x10000484 # vor v0,v0,v0
blr
.globl .OPENSSL_wipe_cpu
.align 4
.OPENSSL_wipe_cpu: