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6436beeee5
Software Step exception is missing after stepping a trapped instruction. Ensure SPSR.SS gets set to 0 after emulating/skipping a trapped instruction before doing ERET. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Julien Thierry <julien.thierry@arm.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> [will: replaced AARCH32_INSN_SIZE with 4] Signed-off-by: Will Deacon <will.deacon@arm.com>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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* Based on arch/arm/include/asm/traps.h
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*
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* Copyright (C) 2012 ARM Ltd.
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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 version 2 as
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* published by the Free Software Foundation.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_TRAP_H
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#define __ASM_TRAP_H
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#include <linux/list.h>
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#include <asm/sections.h>
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struct pt_regs;
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struct undef_hook {
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struct list_head node;
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u32 instr_mask;
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u32 instr_val;
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u64 pstate_mask;
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u64 pstate_val;
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int (*fn)(struct pt_regs *regs, u32 instr);
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};
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void register_undef_hook(struct undef_hook *hook);
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void unregister_undef_hook(struct undef_hook *hook);
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void arm64_notify_segfault(struct pt_regs *regs, unsigned long addr);
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/*
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* Move regs->pc to next instruction and do necessary setup before it
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* is executed.
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*/
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void arm64_skip_faulting_instruction(struct pt_regs *regs, unsigned long size);
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static inline int __in_irqentry_text(unsigned long ptr)
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{
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return ptr >= (unsigned long)&__irqentry_text_start &&
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ptr < (unsigned long)&__irqentry_text_end;
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}
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static inline int in_exception_text(unsigned long ptr)
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{
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int in;
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in = ptr >= (unsigned long)&__exception_text_start &&
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ptr < (unsigned long)&__exception_text_end;
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return in ? : __in_irqentry_text(ptr);
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}
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static inline int in_entry_text(unsigned long ptr)
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{
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return ptr >= (unsigned long)&__entry_text_start &&
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ptr < (unsigned long)&__entry_text_end;
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}
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#endif
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