X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=arch%2Farch-sh.h;h=ef4ee032f1ca0922014baca2e0697f210b3a37d7;hp=72183fac9eb26bc2ff64d8498cab45b4b0ca2251;hb=d3cc4ebf58ec05037c3b0dd7c83c075a56f1dc62;hpb=29721c9ce4f85775ff77dcb04bd26a7f10272e47

diff --git a/arch/arch-sh.h b/arch/arch-sh.h
index 72183fac..ef4ee032 100644
--- a/arch/arch-sh.h
+++ b/arch/arch-sh.h
@@ -3,7 +3,7 @@
 #ifndef ARCH_SH_H
 #define ARCH_SH_H
 
-#define SH	(arch_sh)
+#define ARCH	(arch_sh)
 
 #ifndef __NR_ioprio_set
 #define __NR_ioprio_set	288
@@ -21,7 +21,39 @@
 #endif
 
 #define nop             __asm__ __volatile__ ("nop": : :"memory")
-#define read_barrier()  __asm__ __volatile__ (" " : : : "memory")
-#define write_barrier() __asm__ __volatile__ (" " : : : "memory")
+
+#define mb()								\
+	do {								\
+		if (arch_flags & ARCH_FLAG_1)				\
+			__asm__ __volatile__ ("synco": : :"memory");	\
+		else							\
+			__asm__ __volatile__ (" " : : : "memory");	\
+	} while (0)
+
+#define read_barrier()	mb()
+#define write_barrier()	mb()
+
+#define CPU_HAS_LLSC	0x0040
+
+static inline int arch_init(char *envp[])
+{
+	Elf32_auxv_t *auxv;
+
+	while (*envp++ != NULL)
+		;
+
+	for (auxv = (Elf32_auxv_t *) envp; auxv->a_type != AT_NULL; auxv++) {
+		if (auxv->a_type == AT_HWCAP) {
+			if (auxv->a_un.a_val & CPU_HAS_LLSC) {
+				arch_flags |= ARCH_FLAG_1;
+				break;
+			}
+		}
+	}
+
+	return 0;
+}
+
+#define ARCH_HAVE_INIT
 
 #endif