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e9666d10a5
Currently, CONFIG_JUMP_LABEL just means "I _want_ to use jump label". The jump label is controlled by HAVE_JUMP_LABEL, which is defined like this: #if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL) # define HAVE_JUMP_LABEL #endif We can improve this by testing 'asm goto' support in Kconfig, then make JUMP_LABEL depend on CC_HAS_ASM_GOTO. Ugly #ifdef HAVE_JUMP_LABEL will go away, and CONFIG_JUMP_LABEL will match to the real kernel capability. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
24 lines
660 B
C
24 lines
660 B
C
/*
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* Copyright 2010 Michael Ellerman, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/jump_label.h>
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#include <asm/code-patching.h>
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void arch_jump_label_transform(struct jump_entry *entry,
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enum jump_label_type type)
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{
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u32 *addr = (u32 *)(unsigned long)entry->code;
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if (type == JUMP_LABEL_JMP)
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patch_branch(addr, entry->target, 0);
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else
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patch_instruction(addr, PPC_INST_NOP);
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}
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