X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=arch%2Farch-x86_64.h;h=8f33fc541ee6f266e96f9f507ccc3782d618392c;hp=cea0451d8ba6f3788e7658508a27863f494ac590;hb=1c73ebeac14187f062a3f18a528942cf648e375e;hpb=836fcc0fceb233ebcc41ee63b4ea5cae20b678a4

diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index cea0451d..8f33fc54 100644
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -1,6 +1,15 @@
 #ifndef ARCH_X86_64_h
 #define ARCH_X86_64_h
 
+static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
+			    unsigned int *ecx, unsigned int *edx)
+{
+	asm volatile("cpuid"
+		: "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
+		: "0" (*eax), "2" (*ecx)
+		: "memory");
+}
+
 #include "arch-x86-common.h"
 
 #define FIO_ARCH	(arch_x86_64)
@@ -20,6 +29,13 @@
 #define __NR_sys_vmsplice	278
 #endif
 
+#ifndef __NR_shmget
+#define __NR_shmget		 29
+#define __NR_shmat		 30
+#define __NR_shmctl		 31
+#define __NR_shmdt		 67
+#endif
+
 #define	FIO_HUGE_PAGE		2097152
 
 #define nop		__asm__ __volatile__("rep;nop": : :"memory")
@@ -44,4 +60,34 @@ static inline unsigned long long get_cpu_clock(void)
 #define ARCH_HAVE_SSE4_2
 #define ARCH_HAVE_CPU_CLOCK
 
+#define RDRAND_LONG	".byte 0x48,0x0f,0xc7,0xf0"
+#define RDSEED_LONG	".byte 0x48,0x0f,0xc7,0xf8"
+#define RDRAND_RETRY	100
+
+static inline int arch_rand_long(unsigned long *val)
+{
+	int ok;
+
+	asm volatile("1: " RDRAND_LONG "\n\t"
+		     "jc 2f\n\t"
+		     "decl %0\n\t"
+		     "jnz 1b\n\t"
+		     "2:"
+		     : "=r" (ok), "=a" (*val)
+		     : "0" (RDRAND_RETRY));
+
+	return ok;
+}
+
+static inline int arch_rand_seed(unsigned long *seed)
+{
+	unsigned char ok;
+
+	asm volatile(RDSEED_LONG "\n\t"
+			"setc %0"
+			: "=qm" (ok), "=a" (*seed));
+
+	return 0;
+}
+
 #endif