arch: x86 -> x86_64 and build system changes

2017-10-10 23:24:07 +09:00
parent 51982de36b
commit 43ecf06e83
70 changed files with 50 additions and 56 deletions
--- a/arch/x86_64/kernel/include/arch-futex.h
+++ b/arch/x86_64/kernel/include/arch-futex.h
@@ -0,0 +1,133 @@
+/**
+ * \file futex.h
+ * Licence details are found in the file LICENSE.
+ *  
+ * \brief
+ * Futex adaptation to McKernel
+ *
+ * \author Balazs Gerofi  <bgerofi@riken.jp> \par
+ * Copyright (C) 2012  RIKEN AICS
+ *
+ *
+ * HISTORY:
+ *
+ */
+#ifndef _ARCH_FUTEX_H
+#define _ARCH_FUTEX_H
+#include <asm.h>
+
+#define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg)	\
+	asm volatile("1:\t" insn "\n"				\
+		     "2:\t.section .fixup,\"ax\"\n"		\
+		     "3:\tmov\t%3, %1\n"			\
+		     "\tjmp\t2b\n"				\
+		     "\t.previous\n"				\
+		     _ASM_EXTABLE(1b, 3b)			\
+		     : "=r" (oldval), "=r" (ret), "+m" (*uaddr)	\
+		     : "i" (-EFAULT), "0" (oparg), "1" (0))
+
+#define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg)	\
+	asm volatile("1:\tmovl	%2, %0\n"			\
+		     "\tmovl\t%0, %3\n"				\
+		     "\t" insn "\n"				\
+		     "2:\tlock; cmpxchgl %3, %2\n"		\
+		     "\tjnz\t1b\n"				\
+		     "3:\t.section .fixup,\"ax\"\n"		\
+		     "4:\tmov\t%5, %1\n"			\
+		     "\tjmp\t3b\n"				\
+		     "\t.previous\n"				\
+		     _ASM_EXTABLE(1b, 4b)			\
+		     _ASM_EXTABLE(2b, 4b)			\
+		     : "=&a" (oldval), "=&r" (ret),		\
+		       "+m" (*uaddr), "=&r" (tem)		\
+		     : "r" (oparg), "i" (-EFAULT), "1" (0))
+
+static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval,
+						int newval)
+{
+#ifdef __UACCESS__
+	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+		return -EFAULT;
+#endif
+
+	asm volatile("1:\tlock; cmpxchgl %3, %1\n"
+		     "2:\t.section .fixup, \"ax\"\n"
+		     "3:\tmov     %2, %0\n"
+		     "\tjmp     2b\n"
+		     "\t.previous\n"
+		     _ASM_EXTABLE(1b, 3b)
+		     : "=a" (oldval), "+m" (*uaddr)
+		     : "i" (-EFAULT), "r" (newval), "0" (oldval)
+		     : "memory"
+	);
+
+	return oldval;
+}
+
+#ifdef POSTK_DEBUG_ARCH_DEP_8 /* arch depend hide */
+static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
+{
+	int op = (encoded_op >> 28) & 7;
+	int cmp = (encoded_op >> 24) & 15;
+	int oparg = (encoded_op << 8) >> 20;
+	int cmparg = (encoded_op << 20) >> 20;
+	int oldval = 0, ret, tem;
+
+	if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
+		oparg = 1 << oparg;
+
+#ifdef __UACCESS__
+	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+		return -EFAULT;
+#endif
+
+	switch (op) {
+	case FUTEX_OP_SET:
+		__futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg);
+		break;
+	case FUTEX_OP_ADD:
+		__futex_atomic_op1("lock; xaddl %0, %2", ret, oldval,
+				   uaddr, oparg);
+		break;
+	case FUTEX_OP_OR:
+		__futex_atomic_op2("orl %4, %3", ret, oldval, uaddr, oparg);
+		break;
+	case FUTEX_OP_ANDN:
+		__futex_atomic_op2("andl %4, %3", ret, oldval, uaddr, ~oparg);
+		break;
+	case FUTEX_OP_XOR:
+		__futex_atomic_op2("xorl %4, %3", ret, oldval, uaddr, oparg);
+		break;
+	default:
+		ret = -ENOSYS;
+	}
+
+	if (!ret) {
+		switch (cmp) {
+		case FUTEX_OP_CMP_EQ:
+			ret = (oldval == cmparg);
+			break;
+		case FUTEX_OP_CMP_NE:
+			ret = (oldval != cmparg);
+			break;
+		case FUTEX_OP_CMP_LT:
+			ret = (oldval < cmparg);
+			break;
+		case FUTEX_OP_CMP_GE:
+			ret = (oldval >= cmparg);
+			break;
+		case FUTEX_OP_CMP_LE:
+			ret = (oldval <= cmparg);
+			break;
+		case FUTEX_OP_CMP_GT:
+			ret = (oldval > cmparg);
+			break;
+		default:
+			ret = -ENOSYS;
+		}
+	}
+	return ret;
+}
+#endif	/* !POSTK_DEBUG_ARCH_DEP_8 */
+
+#endif