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linux
ARM: 8594/1: enable binfmt_flat on systems with an MMU
Now that the generic changes are in place, this can be enabled on ARM
with the use of proper user space accessors in the flat_get_addr_from_rp()
and flat_put_addr_at_rp() handlers as rp actually holds a user space
address.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
authored by
Nicolas Pitre
and committed by
Russell King
d782e426
55604b7a
+4
-3
+3
-2
arch/arm/include/asm/flat.h
+3
-2
arch/arm/include/asm/flat.h
···
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#define flat_argvp_envp_on_stack() 1
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#define flat_old_ram_flag(flags) (flags)
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#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
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-
#define flat_get_addr_from_rp(rp, relval, flags, persistent) ((void)persistent,get_unaligned(rp))
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-
#define flat_put_addr_at_rp(rp, val, relval) put_unaligned(val,rp)
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+
#define flat_get_addr_from_rp(rp, relval, flags, persistent) \
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({ unsigned long __val; __get_user_unaligned(__val, rp); __val; })
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#define flat_put_addr_at_rp(rp, val, relval) __put_user_unaligned(val, rp)
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#define flat_get_relocate_addr(rel) (rel)
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#define flat_set_persistent(relval, p) 0
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