PPC assebmly pack: initial POWER9 support tidbits.

Reviewed-by: Richard Levitte <levitte@openssl.org>

crypto/perlasm/ppc-xlate.pl

@@ -207,6 +207,21 @@ my $mtsle	= sub {
     "	.long	".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2);
 };
 
+# PowerISA 3.0 stuff
+my $maddhdu = sub {
+    my ($f, $rt, $ra, $rb, $rc) = @_;
+    "	.long	".sprintf "0x%X",(4<<26)|($rt<<21)|($ra<<16)|($rb<<11)|($rc<<6)|49;
+};
+my $maddld = sub {
+    my ($f, $rt, $ra, $rb, $rc) = @_;
+    "	.long	".sprintf "0x%X",(4<<26)|($rt<<21)|($ra<<16)|($rb<<11)|($rc<<6)|51;
+};
+
+my $darn = sub {
+    my ($f, $rt, $l) = @_;
+    "	.long	".sprintf "0x%X",(31<<26)|($rt<<21)|($l<<16)|(755<<1);
+};
+
 while($line=<>) {
 
     $line =~ s|[#!;].*$||;	# get rid of asm-style comments...

crypto/ppc_arch.h

@@ -12,5 +12,6 @@ extern unsigned int OPENSSL_ppccap_P;
 # define PPC_ALTIVEC     (1<<1)
 # define PPC_CRYPTO207   (1<<2)
 # define PPC_FPU         (1<<3)
+# define PPC_MADD300     (1<<4)
 
 #endif

crypto/ppccap.c

@@ -151,6 +151,7 @@ static unsigned long (*getauxval) (unsigned long) = NULL;
 
 #define HWCAP2                  26      /* AT_HWCAP2 */
 #define HWCAP_VEC_CRYPTO        (1U << 25)
+#define HWCAP_ARCH_3_00         (1U << 23)
 
 # if defined(__GNUC__) && __GNUC__>=2
 __attribute__ ((constructor))
@@ -208,6 +209,9 @@ void OPENSSL_cpuid_setup(void)
     if (__power_set(0xffffffffU<<16))           /* POWER8 and later */
         OPENSSL_ppccap_P |= PPC_CRYPTO207;
 
+    if (__power_set(0xffffffffU<<17))           /* POWER9 and later */
+        OPENSSL_ppccap_P |= PPC_MADD300;
+
     return;
 # endif
 #endif
@@ -236,6 +240,10 @@ void OPENSSL_cpuid_setup(void)
                 OPENSSL_ppccap_P |= PPC_CRYPTO207;
         }
 
+        if (hwcap & HWCAP_ARCH_3_00) {
+            OPENSSL_ppccap_P |= PPC_MADD300;
+        }
+
         return;
     }
 
@@ -285,6 +293,11 @@ void OPENSSL_cpuid_setup(void)
         }
     }
 
+    if (sigsetjmp(ill_jmp, 1) == 0) {
+        OPENSSL_madd300_probe();
+        OPENSSL_ppccap_P |= PPC_MADD300;
+    }
+
     sigaction(SIGILL, &ill_oact, NULL);
     sigprocmask(SIG_SETMASK, &oset, NULL);
 }

crypto/ppccpuid.pl

@@ -60,6 +60,16 @@ $code=<<___;
 	.byte	0,12,0x14,0,0,0,0,0
 .size	.OPENSSL_crypto207_probe,.-.OPENSSL_crypto207_probe
 
+.globl	.OPENSSL_madd300_probe
+.align	4
+.OPENSSL_madd300_probe:
+	xor	r0,r0,r0
+	maddld	r3,r0,r0,r0
+	maddhdu	r3,r0,r0,r0
+	blr
+	.long	0
+	.byte	0,12,0x14,0,0,0,0,0
+
 .globl	.OPENSSL_wipe_cpu
 .align	4
 .OPENSSL_wipe_cpu: