144 lines
3.7 KiB
C
144 lines
3.7 KiB
C
/******************************************************************************
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* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __ASM_PARAVIRT_PATCH_H
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#define __ASM_PARAVIRT_PATCH_H
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#ifdef __ASSEMBLY__
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.section .paravirt_branches, "a"
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.previous
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#define PARAVIRT_PATCH_SITE_BR(type) \
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{ \
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[1:] ; \
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br.cond.sptk.many 2f ; \
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nop.b 0 ; \
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nop.b 0;; ; \
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} ; \
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2: \
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.xdata8 ".paravirt_branches", 1b, type
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#else
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#include <linux/stringify.h>
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#include <asm/intrinsics.h>
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/* for binary patch */
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struct paravirt_patch_site_bundle {
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void *sbundle;
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void *ebundle;
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unsigned long type;
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};
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/* label means the beginning of new bundle */
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#define paravirt_alt_bundle(instr, privop) \
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"\t998:\n" \
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"\t" instr "\n" \
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"\t999:\n" \
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"\t.pushsection .paravirt_bundles, \"a\"\n" \
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"\t.popsection\n" \
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"\t.xdata8 \".paravirt_bundles\", 998b, 999b, " \
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__stringify(privop) "\n"
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struct paravirt_patch_bundle_elem {
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const void *sbundle;
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const void *ebundle;
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unsigned long type;
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};
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struct paravirt_patch_site_inst {
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unsigned long stag;
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unsigned long etag;
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unsigned long type;
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};
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#define paravirt_alt_inst(instr, privop) \
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"\t[998:]\n" \
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"\t" instr "\n" \
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"\t[999:]\n" \
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"\t.pushsection .paravirt_insts, \"a\"\n" \
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"\t.popsection\n" \
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"\t.xdata8 \".paravirt_insts\", 998b, 999b, " \
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__stringify(privop) "\n"
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struct paravirt_patch_site_branch {
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unsigned long tag;
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unsigned long type;
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};
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struct paravirt_patch_branch_target {
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const void *entry;
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unsigned long type;
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};
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void
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__paravirt_patch_apply_branch(
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unsigned long tag, unsigned long type,
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const struct paravirt_patch_branch_target *entries,
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unsigned int nr_entries);
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void
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paravirt_patch_reloc_br(unsigned long tag, const void *target);
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void
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paravirt_patch_reloc_brl(unsigned long tag, const void *target);
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#if defined(ASM_SUPPORTED) && defined(CONFIG_PARAVIRT)
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unsigned long
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ia64_native_patch_bundle(void *sbundle, void *ebundle, unsigned long type);
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unsigned long
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__paravirt_patch_apply_bundle(void *sbundle, void *ebundle, unsigned long type,
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const struct paravirt_patch_bundle_elem *elems,
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unsigned long nelems,
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const struct paravirt_patch_bundle_elem **found);
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void
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paravirt_patch_apply_bundle(const struct paravirt_patch_site_bundle *start,
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const struct paravirt_patch_site_bundle *end);
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void
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paravirt_patch_apply_inst(const struct paravirt_patch_site_inst *start,
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const struct paravirt_patch_site_inst *end);
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void paravirt_patch_apply(void);
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#else
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#define paravirt_patch_apply_bundle(start, end) do { } while (0)
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#define paravirt_patch_apply_inst(start, end) do { } while (0)
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#define paravirt_patch_apply() do { } while (0)
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#endif
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#endif /* !__ASSEMBLEY__ */
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#endif /* __ASM_PARAVIRT_PATCH_H */
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/*
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* Local variables:
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* mode: C
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* c-set-style: "linux"
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*/
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