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-rw-r--r--include/asm-x86/futex.h138
-rw-r--r--include/asm-x86/futex_32.h133
-rw-r--r--include/asm-x86/futex_64.h127
3 files changed, 134 insertions, 264 deletions
diff --git a/include/asm-x86/futex.h b/include/asm-x86/futex.h
index 1f4610e0c613..62828d63f1b1 100644
--- a/include/asm-x86/futex.h
+++ b/include/asm-x86/futex.h
@@ -1,5 +1,135 @@
-#ifdef CONFIG_X86_32
-# include "futex_32.h"
-#else
-# include "futex_64.h"
+#ifndef _ASM_X86_FUTEX_H
+#define _ASM_X86_FUTEX_H
+
+#ifdef __KERNEL__
+
+#include <linux/futex.h>
+
+#include <asm/asm.h>
+#include <asm/errno.h>
+#include <asm/processor.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+#define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \
+ __asm__ __volatile( \
+"1: " insn "\n" \
+"2: .section .fixup,\"ax\"\n \
+3: mov %3, %1\n \
+ jmp 2b\n \
+ .previous\n \
+ .section __ex_table,\"a\"\n \
+ .align 8\n" \
+ _ASM_PTR "1b,3b\n \
+ .previous" \
+ : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \
+ : "i" (-EFAULT), "0" (oparg), "1" (0))
+
+#define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \
+ __asm__ __volatile( \
+"1: movl %2, %0\n \
+ movl %0, %3\n" \
+ insn "\n" \
+"2: " LOCK_PREFIX "cmpxchgl %3, %2\n \
+ jnz 1b\n \
+3: .section .fixup,\"ax\"\n \
+4: mov %5, %1\n \
+ jmp 3b\n \
+ .previous\n \
+ .section __ex_table,\"a\"\n \
+ .align 8\n" \
+ _ASM_PTR "1b,4b,2b,4b\n \
+ .previous" \
+ : "=&a" (oldval), "=&r" (ret), "+m" (*uaddr), \
+ "=&r" (tem) \
+ : "r" (oparg), "i" (-EFAULT), "1" (0))
+
+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;
+
+ if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+ return -EFAULT;
+
+#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_BSWAP)
+ /* Real i386 machines can only support FUTEX_OP_SET */
+ if (op != FUTEX_OP_SET && boot_cpu_data.x86 == 3)
+ return -ENOSYS;
+#endif
+
+ pagefault_disable();
+
+ 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_PREFIX "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;
+ }
+
+ pagefault_enable();
+
+ 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;
+}
+
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+ return -EFAULT;
+
+ __asm__ __volatile__(
+ "1: " LOCK_PREFIX "cmpxchgl %3, %1 \n"
+
+ "2: .section .fixup, \"ax\" \n"
+ "3: mov %2, %0 \n"
+ " jmp 2b \n"
+ " .previous \n"
+
+ " .section __ex_table, \"a\" \n"
+ " .align 8 \n"
+ _ASM_PTR " 1b,3b \n"
+ " .previous \n"
+
+ : "=a" (oldval), "+m" (*uaddr)
+ : "i" (-EFAULT), "r" (newval), "0" (oldval)
+ : "memory"
+ );
+
+ return oldval;
+}
+
+#endif
#endif
diff --git a/include/asm-x86/futex_32.h b/include/asm-x86/futex_32.h
deleted file mode 100644
index c80013e19c21..000000000000
--- a/include/asm-x86/futex_32.h
+++ /dev/null
@@ -1,133 +0,0 @@
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
-
-#ifdef __KERNEL__
-
-#include <linux/futex.h>
-
-#include <asm/asm.h>
-#include <asm/errno.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-#include <asm/uaccess.h>
-
-#define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \
- __asm__ __volatile ( \
-"1: " insn "\n" \
-"2: .section .fixup,\"ax\"\n\
-3: mov %3, %1\n\
- jmp 2b\n\
- .previous\n\
- .section __ex_table,\"a\"\n\
- .align 8\n" \
- _ASM_PTR "1b,3b\n \
- .previous" \
- : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \
- : "i" (-EFAULT), "0" (oparg), "1" (0))
-
-#define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \
- __asm__ __volatile ( \
-"1: movl %2, %0\n\
- movl %0, %3\n" \
- insn "\n" \
-"2: " LOCK_PREFIX "cmpxchgl %3, %2\n\
- jnz 1b\n\
-3: .section .fixup,\"ax\"\n\
-4: mov %5, %1\n\
- jmp 3b\n\
- .previous\n\
- .section __ex_table,\"a\"\n\
- .align 8\n" \
- _ASM_PTR "1b,4b,2b,4b\n \
- .previous" \
- : "=&a" (oldval), "=&r" (ret), "+m" (*uaddr), \
- "=&r" (tem) \
- : "r" (oparg), "i" (-EFAULT), "1" (0))
-
-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;
-
- if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
-#ifndef CONFIG_X86_BSWAP
- if (op == FUTEX_OP_SET && boot_cpu_data.x86 == 3)
- return -ENOSYS;
-#endif
-
- pagefault_disable();
-
- 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_PREFIX "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;
- }
-
- pagefault_enable();
-
- 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;
-}
-
-static inline int
-futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
-{
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
- __asm__ __volatile__(
- "1: " LOCK_PREFIX "cmpxchgl %3, %1 \n"
-
- "2: .section .fixup, \"ax\" \n"
- "3: mov %2, %0 \n"
- " jmp 2b \n"
- " .previous \n"
-
- " .section __ex_table, \"a\" \n"
- " .align 8 \n"
- _ASM_PTR " 1b,3b \n"
- " .previous \n"
-
- : "=a" (oldval), "+m" (*uaddr)
- : "i" (-EFAULT), "r" (newval), "0" (oldval)
- : "memory"
- );
-
- return oldval;
-}
-
-#endif
-#endif
diff --git a/include/asm-x86/futex_64.h b/include/asm-x86/futex_64.h
deleted file mode 100644
index 02964d225d18..000000000000
--- a/include/asm-x86/futex_64.h
+++ /dev/null
@@ -1,127 +0,0 @@
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
-
-#ifdef __KERNEL__
-
-#include <linux/futex.h>
-
-#include <asm/asm.h>
-#include <asm/errno.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \
- __asm__ __volatile ( \
-"1: " insn "\n" \
-"2: .section .fixup,\"ax\"\n\
-3: mov %3, %1\n\
- jmp 2b\n\
- .previous\n\
- .section __ex_table,\"a\"\n\
- .align 8\n" \
- _ASM_PTR "1b,3b\n \
- .previous" \
- : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \
- : "i" (-EFAULT), "0" (oparg), "1" (0))
-
-#define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \
- __asm__ __volatile ( \
-"1: movl %2, %0\n\
- movl %0, %3\n" \
- insn "\n" \
-"2: " LOCK_PREFIX "cmpxchgl %3, %2\n\
- jnz 1b\n\
-3: .section .fixup,\"ax\"\n\
-4: mov %5, %1\n\
- jmp 3b\n\
- .previous\n\
- .section __ex_table,\"a\"\n\
- .align 8\n" \
- _ASM_PTR "1b,4b,2b,4b\n \
- .previous" \
- : "=&a" (oldval), "=&r" (ret), "+m" (*uaddr), \
- "=&r" (tem) \
- : "r" (oparg), "i" (-EFAULT), "1" (0))
-
-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;
-
- if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
- pagefault_disable();
-
- 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_PREFIX "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;
- }
-
- pagefault_enable();
-
- 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;
-}
-
-static inline int
-futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
-{
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
- __asm__ __volatile__(
- "1: " LOCK_PREFIX "cmpxchgl %3, %1 \n"
-
- "2: .section .fixup, \"ax\" \n"
- "3: mov %2, %0 \n"
- " jmp 2b \n"
- " .previous \n"
-
- " .section __ex_table, \"a\" \n"
- " .align 8 \n"
- _ASM_PTR " 1b,3b \n"
- " .previous \n"
-
- : "=a" (oldval), "+m" (*uaddr)
- : "i" (-EFAULT), "r" (newval), "0" (oldval)
- : "memory"
- );
-
- return oldval;
-}
-
-#endif
-#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-22 05:24:34 +0300