um: use subarch-obj instead of copying...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
index 3923cfb..e5e56d7 100644 (file)
--- a/arch/um/sys-i386/Makefile
+++ b/arch/um/sys-i386/Makefile
@@ -4,11 +4,11 @@
 
 obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
        ptrace_user.o setjmp.o signal.o stub.o stub_segv.o syscalls.o sysrq.o \
-       sys_call_table.o tls.o atomic64_cx8_32.o mem.o
+       sys_call_table.o tls.o mem.o
 
 obj-$(CONFIG_BINFMT_ELF) += elfcore.o
 
-subarch-obj-y = lib/string_32.o
+subarch-obj-y = lib/string_32.o lib/atomic64_32.o lib/atomic64_cx8_32.o
 subarch-obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += lib/rwsem.o
 subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem_32.o
 subarch-obj-$(CONFIG_MODULES) += kernel/module.o

diff --git a/arch/um/sys-i386/atomic64_cx8_32.S b/arch/um/sys-i386/atomic64_cx8_32.S
deleted file mode 100644 (file)
index 1e901d3..0000000
--- a/arch/um/sys-i386/atomic64_cx8_32.S
+++ /dev/null
@@ -1,225 +0,0 @@
-/*
- * atomic64_t for 586+
- *
- * Copied from arch/x86/lib/atomic64_cx8_32.S
- *
- * Copyright © 2010  Luca Barbieri
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- */
-
-#include <linux/linkage.h>
-#include <asm/alternative-asm.h>
-#include <asm/dwarf2.h>
-
-.macro SAVE reg
-       pushl_cfi %\reg
-       CFI_REL_OFFSET \reg, 0
-.endm
-
-.macro RESTORE reg
-       popl_cfi %\reg
-       CFI_RESTORE \reg
-.endm
-
-.macro read64 reg
-       movl %ebx, %eax
-       movl %ecx, %edx
-/* we need LOCK_PREFIX since otherwise cmpxchg8b always does the write */
-       LOCK_PREFIX
-       cmpxchg8b (\reg)
-.endm
-
-ENTRY(atomic64_read_cx8)
-       CFI_STARTPROC
-
-       read64 %ecx
-       ret
-       CFI_ENDPROC
-ENDPROC(atomic64_read_cx8)
-
-ENTRY(atomic64_set_cx8)
-       CFI_STARTPROC
-
-1:
-/* we don't need LOCK_PREFIX since aligned 64-bit writes
- * are atomic on 586 and newer */
-       cmpxchg8b (%esi)
-       jne 1b
-
-       ret
-       CFI_ENDPROC
-ENDPROC(atomic64_set_cx8)
-
-ENTRY(atomic64_xchg_cx8)
-       CFI_STARTPROC
-
-       movl %ebx, %eax
-       movl %ecx, %edx
-1:
-       LOCK_PREFIX
-       cmpxchg8b (%esi)
-       jne 1b
-
-       ret
-       CFI_ENDPROC
-ENDPROC(atomic64_xchg_cx8)
-
-.macro addsub_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
-       CFI_STARTPROC
-       SAVE ebp
-       SAVE ebx
-       SAVE esi
-       SAVE edi
-
-       movl %eax, %esi
-       movl %edx, %edi
-       movl %ecx, %ebp
-
-       read64 %ebp
-1:
-       movl %eax, %ebx
-       movl %edx, %ecx
-       \ins\()l %esi, %ebx
-       \insc\()l %edi, %ecx
-       LOCK_PREFIX
-       cmpxchg8b (%ebp)
-       jne 1b
-
-10:
-       movl %ebx, %eax
-       movl %ecx, %edx
-       RESTORE edi
-       RESTORE esi
-       RESTORE ebx
-       RESTORE ebp
-       ret
-       CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
-.endm
-
-addsub_return add add adc
-addsub_return sub sub sbb
-
-.macro incdec_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
-       CFI_STARTPROC
-       SAVE ebx
-
-       read64 %esi
-1:
-       movl %eax, %ebx
-       movl %edx, %ecx
-       \ins\()l $1, %ebx
-       \insc\()l $0, %ecx
-       LOCK_PREFIX
-       cmpxchg8b (%esi)
-       jne 1b
-
-10:
-       movl %ebx, %eax
-       movl %ecx, %edx
-       RESTORE ebx
-       ret
-       CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
-.endm
-
-incdec_return inc add adc
-incdec_return dec sub sbb
-
-ENTRY(atomic64_dec_if_positive_cx8)
-       CFI_STARTPROC
-       SAVE ebx
-
-       read64 %esi
-1:
-       movl %eax, %ebx
-       movl %edx, %ecx
-       subl $1, %ebx
-       sbb $0, %ecx
-       js 2f
-       LOCK_PREFIX
-       cmpxchg8b (%esi)
-       jne 1b
-
-2:
-       movl %ebx, %eax
-       movl %ecx, %edx
-       RESTORE ebx
-       ret
-       CFI_ENDPROC
-ENDPROC(atomic64_dec_if_positive_cx8)
-
-ENTRY(atomic64_add_unless_cx8)
-       CFI_STARTPROC
-       SAVE ebp
-       SAVE ebx
-/* these just push these two parameters on the stack */
-       SAVE edi
-       SAVE esi
-
-       movl %ecx, %ebp
-       movl %eax, %esi
-       movl %edx, %edi
-
-       read64 %ebp
-1:
-       cmpl %eax, 0(%esp)
-       je 4f
-2:
-       movl %eax, %ebx
-       movl %edx, %ecx
-       addl %esi, %ebx
-       adcl %edi, %ecx
-       LOCK_PREFIX
-       cmpxchg8b (%ebp)
-       jne 1b
-
-       movl $1, %eax
-3:
-       addl $8, %esp
-       CFI_ADJUST_CFA_OFFSET -8
-       RESTORE ebx
-       RESTORE ebp
-       ret
-4:
-       cmpl %edx, 4(%esp)
-       jne 2b
-       xorl %eax, %eax
-       jmp 3b
-       CFI_ENDPROC
-ENDPROC(atomic64_add_unless_cx8)
-
-ENTRY(atomic64_inc_not_zero_cx8)
-       CFI_STARTPROC
-       SAVE ebx
-
-       read64 %esi
-1:
-       testl %eax, %eax
-       je 4f
-2:
-       movl %eax, %ebx
-       movl %edx, %ecx
-       addl $1, %ebx
-       adcl $0, %ecx
-       LOCK_PREFIX
-       cmpxchg8b (%esi)
-       jne 1b
-
-       movl $1, %eax
-3:
-       RESTORE ebx
-       ret
-4:
-       testl %edx, %edx
-       jne 2b
-       jmp 3b
-       CFI_ENDPROC
-ENDPROC(atomic64_inc_not_zero_cx8)