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
--- 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
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)