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650b55b707
For powerpc64, redefine the ppc_inst type so both word and prefixed
instructions can be represented. On powerpc32 the type will remain the
same. Update places which had assumed instructions to be 4 bytes long.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
[mpe: Rework the get_user_inst() macros to be parameterised, and don't
assign to the dest if an error occurred. Use CONFIG_PPC64 not
__powerpc64__ in a few places. Address other comments from
Christophe. Fix some sparse complaints.]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-24-jniethe5@gmail.com
37 lines
819 B
C
37 lines
819 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _ASM_UPROBES_H
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#define _ASM_UPROBES_H
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/*
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* User-space Probes (UProbes) for powerpc
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*
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* Copyright IBM Corporation, 2007-2012
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*
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* Adapted from the x86 port by Ananth N Mavinakayanahalli <ananth@in.ibm.com>
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*/
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#include <linux/notifier.h>
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#include <asm/probes.h>
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#include <asm/inst.h>
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typedef ppc_opcode_t uprobe_opcode_t;
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#define MAX_UINSN_BYTES 8
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#define UPROBE_XOL_SLOT_BYTES (MAX_UINSN_BYTES)
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/* The following alias is needed for reference from arch-agnostic code */
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#define UPROBE_SWBP_INSN BREAKPOINT_INSTRUCTION
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#define UPROBE_SWBP_INSN_SIZE 4 /* swbp insn size in bytes */
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struct arch_uprobe {
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union {
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struct ppc_inst insn;
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struct ppc_inst ixol;
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};
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};
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struct arch_uprobe_task {
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unsigned long saved_trap_nr;
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};
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#endif /* _ASM_UPROBES_H */
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