07eecff8ae
The jump_table stores two 32-bit words and one 32- (on 32-bit kernel) or one 64-bit word (on 64-bit kernel). Ensure that the last word is always 64-bit aligned on a 64-bit kernel by aligning the whole structure on sizeof(long). Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # v6.0+
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_PARISC_JUMP_LABEL_H
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#define _ASM_PARISC_JUMP_LABEL_H
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#include <linux/stringify.h>
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#include <asm/assembly.h>
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#define JUMP_LABEL_NOP_SIZE 4
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static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
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{
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asm_volatile_goto("1:\n\t"
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"nop\n\t"
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".pushsection __jump_table, \"aw\"\n\t"
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".align %1\n\t"
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".word 1b - ., %l[l_yes] - .\n\t"
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__stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
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".popsection\n\t"
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: : "i" (&((char *)key)[branch]), "i" (sizeof(long))
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: : l_yes);
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return false;
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l_yes:
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return true;
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}
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static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
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{
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asm_volatile_goto("1:\n\t"
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"b,n %l[l_yes]\n\t"
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".pushsection __jump_table, \"aw\"\n\t"
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".align %1\n\t"
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".word 1b - ., %l[l_yes] - .\n\t"
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__stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
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".popsection\n\t"
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: : "i" (&((char *)key)[branch]), "i" (sizeof(long))
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: : l_yes);
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return false;
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l_yes:
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return true;
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}
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#endif /* __ASSEMBLY__ */
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#endif
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