x86, extable: Remove open-coded exception table entries in arch/x86/lib/usercopy_32.c
Remove open-coded exception table entries in arch/x86/lib/usercopy_32.c, and replace them with _ASM_EXTABLE() macros; this will allow us to change the format and type of the exception table entries. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: David Daney <david.daney@cavium.com> Link: http://lkml.kernel.org/r/CA%2B55aFyijf43qSu3N9nWHEBwaGbb7T2Oq9A=9EyR=Jtyqfq_cQ@mail.gmail.com
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@ -13,6 +13,7 @@
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#include <linux/interrupt.h>
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#include <asm/uaccess.h>
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#include <asm/mmx.h>
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#include <asm/asm.h>
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#ifdef CONFIG_X86_INTEL_USERCOPY
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/*
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@ -127,10 +128,7 @@ long strnlen_user(const char __user *s, long n)
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"3: movb $1,%%al\n"
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" jmp 1b\n"
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".previous\n"
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".section __ex_table,\"a\"\n"
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" .align 4\n"
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" .long 0b,2b\n"
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".previous"
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_ASM_EXTABLE(0b,2b)
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:"=&r" (n), "=&D" (s), "=&a" (res), "=&c" (tmp)
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:"0" (n), "1" (s), "2" (0), "3" (mask)
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:"cc");
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@ -199,47 +197,44 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size)
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"101: lea 0(%%eax,%0,4),%0\n"
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" jmp 100b\n"
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".previous\n"
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".section __ex_table,\"a\"\n"
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" .align 4\n"
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" .long 1b,100b\n"
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" .long 2b,100b\n"
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" .long 3b,100b\n"
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" .long 4b,100b\n"
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" .long 5b,100b\n"
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" .long 6b,100b\n"
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" .long 7b,100b\n"
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" .long 8b,100b\n"
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" .long 9b,100b\n"
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" .long 10b,100b\n"
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" .long 11b,100b\n"
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" .long 12b,100b\n"
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" .long 13b,100b\n"
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" .long 14b,100b\n"
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" .long 15b,100b\n"
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" .long 16b,100b\n"
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" .long 17b,100b\n"
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" .long 18b,100b\n"
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" .long 19b,100b\n"
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" .long 20b,100b\n"
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" .long 21b,100b\n"
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" .long 22b,100b\n"
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" .long 23b,100b\n"
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" .long 24b,100b\n"
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" .long 25b,100b\n"
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" .long 26b,100b\n"
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" .long 27b,100b\n"
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" .long 28b,100b\n"
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" .long 29b,100b\n"
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" .long 30b,100b\n"
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" .long 31b,100b\n"
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" .long 32b,100b\n"
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" .long 33b,100b\n"
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" .long 34b,100b\n"
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" .long 35b,100b\n"
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" .long 36b,100b\n"
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" .long 37b,100b\n"
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" .long 99b,101b\n"
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".previous"
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_ASM_EXTABLE(1b,100b)
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_ASM_EXTABLE(2b,100b)
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_ASM_EXTABLE(3b,100b)
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_ASM_EXTABLE(4b,100b)
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_ASM_EXTABLE(5b,100b)
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_ASM_EXTABLE(6b,100b)
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_ASM_EXTABLE(7b,100b)
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_ASM_EXTABLE(8b,100b)
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_ASM_EXTABLE(9b,100b)
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_ASM_EXTABLE(10b,100b)
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_ASM_EXTABLE(11b,100b)
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_ASM_EXTABLE(12b,100b)
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_ASM_EXTABLE(13b,100b)
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_ASM_EXTABLE(14b,100b)
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_ASM_EXTABLE(15b,100b)
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_ASM_EXTABLE(16b,100b)
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_ASM_EXTABLE(17b,100b)
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_ASM_EXTABLE(18b,100b)
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_ASM_EXTABLE(19b,100b)
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_ASM_EXTABLE(20b,100b)
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_ASM_EXTABLE(21b,100b)
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_ASM_EXTABLE(22b,100b)
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_ASM_EXTABLE(23b,100b)
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_ASM_EXTABLE(24b,100b)
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_ASM_EXTABLE(25b,100b)
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_ASM_EXTABLE(26b,100b)
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_ASM_EXTABLE(27b,100b)
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_ASM_EXTABLE(28b,100b)
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_ASM_EXTABLE(29b,100b)
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_ASM_EXTABLE(30b,100b)
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_ASM_EXTABLE(31b,100b)
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_ASM_EXTABLE(32b,100b)
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_ASM_EXTABLE(33b,100b)
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_ASM_EXTABLE(34b,100b)
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_ASM_EXTABLE(35b,100b)
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_ASM_EXTABLE(36b,100b)
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_ASM_EXTABLE(37b,100b)
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_ASM_EXTABLE(99b,101b)
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: "=&c"(size), "=&D" (d0), "=&S" (d1)
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: "1"(to), "2"(from), "0"(size)
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: "eax", "edx", "memory");
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@ -312,29 +307,26 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size)
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" popl %0\n"
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" jmp 8b\n"
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".previous\n"
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".section __ex_table,\"a\"\n"
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" .align 4\n"
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" .long 0b,16b\n"
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" .long 1b,16b\n"
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" .long 2b,16b\n"
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" .long 21b,16b\n"
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" .long 3b,16b\n"
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" .long 31b,16b\n"
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" .long 4b,16b\n"
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" .long 41b,16b\n"
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" .long 10b,16b\n"
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" .long 51b,16b\n"
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" .long 11b,16b\n"
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" .long 61b,16b\n"
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" .long 12b,16b\n"
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" .long 71b,16b\n"
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" .long 13b,16b\n"
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" .long 81b,16b\n"
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" .long 14b,16b\n"
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" .long 91b,16b\n"
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" .long 6b,9b\n"
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" .long 7b,16b\n"
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".previous"
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_ASM_EXTABLE(0b,16b)
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_ASM_EXTABLE(1b,16b)
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_ASM_EXTABLE(2b,16b)
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_ASM_EXTABLE(21b,16b)
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_ASM_EXTABLE(3b,16b)
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_ASM_EXTABLE(31b,16b)
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_ASM_EXTABLE(4b,16b)
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_ASM_EXTABLE(41b,16b)
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_ASM_EXTABLE(10b,16b)
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_ASM_EXTABLE(51b,16b)
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_ASM_EXTABLE(11b,16b)
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_ASM_EXTABLE(61b,16b)
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_ASM_EXTABLE(12b,16b)
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_ASM_EXTABLE(71b,16b)
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_ASM_EXTABLE(13b,16b)
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_ASM_EXTABLE(81b,16b)
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_ASM_EXTABLE(14b,16b)
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_ASM_EXTABLE(91b,16b)
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_ASM_EXTABLE(6b,9b)
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_ASM_EXTABLE(7b,16b)
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: "=&c"(size), "=&D" (d0), "=&S" (d1)
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: "1"(to), "2"(from), "0"(size)
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: "eax", "edx", "memory");
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@ -414,29 +406,26 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to,
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" popl %0\n"
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" jmp 8b\n"
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".previous\n"
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".section __ex_table,\"a\"\n"
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" .align 4\n"
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" .long 0b,16b\n"
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" .long 1b,16b\n"
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" .long 2b,16b\n"
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" .long 21b,16b\n"
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" .long 3b,16b\n"
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" .long 31b,16b\n"
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" .long 4b,16b\n"
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" .long 41b,16b\n"
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" .long 10b,16b\n"
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" .long 51b,16b\n"
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" .long 11b,16b\n"
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" .long 61b,16b\n"
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" .long 12b,16b\n"
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" .long 71b,16b\n"
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" .long 13b,16b\n"
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" .long 81b,16b\n"
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" .long 14b,16b\n"
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" .long 91b,16b\n"
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" .long 6b,9b\n"
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" .long 7b,16b\n"
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".previous"
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_ASM_EXTABLE(0b,16b)
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_ASM_EXTABLE(1b,16b)
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_ASM_EXTABLE(2b,16b)
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_ASM_EXTABLE(21b,16b)
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_ASM_EXTABLE(3b,16b)
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_ASM_EXTABLE(31b,16b)
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_ASM_EXTABLE(4b,16b)
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_ASM_EXTABLE(41b,16b)
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_ASM_EXTABLE(10b,16b)
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_ASM_EXTABLE(51b,16b)
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_ASM_EXTABLE(11b,16b)
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_ASM_EXTABLE(61b,16b)
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_ASM_EXTABLE(12b,16b)
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_ASM_EXTABLE(71b,16b)
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_ASM_EXTABLE(13b,16b)
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_ASM_EXTABLE(81b,16b)
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_ASM_EXTABLE(14b,16b)
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_ASM_EXTABLE(91b,16b)
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_ASM_EXTABLE(6b,9b)
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_ASM_EXTABLE(7b,16b)
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: "=&c"(size), "=&D" (d0), "=&S" (d1)
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: "1"(to), "2"(from), "0"(size)
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: "eax", "edx", "memory");
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@ -505,29 +494,26 @@ static unsigned long __copy_user_intel_nocache(void *to,
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"9: lea 0(%%eax,%0,4),%0\n"
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"16: jmp 8b\n"
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".previous\n"
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".section __ex_table,\"a\"\n"
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" .align 4\n"
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" .long 0b,16b\n"
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" .long 1b,16b\n"
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" .long 2b,16b\n"
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" .long 21b,16b\n"
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" .long 3b,16b\n"
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" .long 31b,16b\n"
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" .long 4b,16b\n"
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" .long 41b,16b\n"
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" .long 10b,16b\n"
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" .long 51b,16b\n"
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" .long 11b,16b\n"
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" .long 61b,16b\n"
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" .long 12b,16b\n"
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" .long 71b,16b\n"
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" .long 13b,16b\n"
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" .long 81b,16b\n"
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" .long 14b,16b\n"
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" .long 91b,16b\n"
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" .long 6b,9b\n"
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" .long 7b,16b\n"
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".previous"
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_ASM_EXTABLE(0b,16b)
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_ASM_EXTABLE(1b,16b)
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_ASM_EXTABLE(2b,16b)
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_ASM_EXTABLE(21b,16b)
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_ASM_EXTABLE(3b,16b)
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_ASM_EXTABLE(31b,16b)
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_ASM_EXTABLE(4b,16b)
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_ASM_EXTABLE(41b,16b)
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_ASM_EXTABLE(10b,16b)
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_ASM_EXTABLE(51b,16b)
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_ASM_EXTABLE(11b,16b)
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_ASM_EXTABLE(61b,16b)
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_ASM_EXTABLE(12b,16b)
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_ASM_EXTABLE(71b,16b)
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_ASM_EXTABLE(13b,16b)
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_ASM_EXTABLE(81b,16b)
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_ASM_EXTABLE(14b,16b)
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_ASM_EXTABLE(91b,16b)
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_ASM_EXTABLE(6b,9b)
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_ASM_EXTABLE(7b,16b)
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: "=&c"(size), "=&D" (d0), "=&S" (d1)
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: "1"(to), "2"(from), "0"(size)
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: "eax", "edx", "memory");
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@ -574,12 +560,9 @@ do { \
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"3: lea 0(%3,%0,4),%0\n" \
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" jmp 2b\n" \
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".previous\n" \
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".section __ex_table,\"a\"\n" \
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" .align 4\n" \
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" .long 4b,5b\n" \
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" .long 0b,3b\n" \
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" .long 1b,2b\n" \
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".previous" \
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_ASM_EXTABLE(4b,5b) \
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_ASM_EXTABLE(0b,3b) \
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_ASM_EXTABLE(1b,2b) \
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: "=&c"(size), "=&D" (__d0), "=&S" (__d1), "=r"(__d2) \
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: "3"(size), "0"(size), "1"(to), "2"(from) \
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: "memory"); \
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@ -616,12 +599,9 @@ do { \
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" popl %0\n" \
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" jmp 2b\n" \
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".previous\n" \
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".section __ex_table,\"a\"\n" \
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" .align 4\n" \
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" .long 4b,5b\n" \
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" .long 0b,3b\n" \
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" .long 1b,6b\n" \
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".previous" \
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_ASM_EXTABLE(4b,5b) \
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_ASM_EXTABLE(0b,3b) \
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_ASM_EXTABLE(1b,6b) \
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: "=&c"(size), "=&D" (__d0), "=&S" (__d1), "=r"(__d2) \
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: "3"(size), "0"(size), "1"(to), "2"(from) \
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: "memory"); \
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