/*
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* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright (C) 2016 Philippe Gerum.
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*/
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#ifndef _ASM_ARM_DOVETAIL_H
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#define _ASM_ARM_DOVETAIL_H
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/* ARM traps */
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#define ARM_TRAP_ACCESS 0 /* Data or instruction access exception */
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#define ARM_TRAP_SECTION 1 /* Section fault */
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#define ARM_TRAP_DABT 2 /* Generic data abort */
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#define ARM_TRAP_PABT 3 /* Prefetch abort */
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#define ARM_TRAP_BREAK 4 /* Instruction breakpoint */
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#define ARM_TRAP_FPU 5 /* Floating point exception */
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#define ARM_TRAP_VFP 6 /* VFP floating point exception */
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#define ARM_TRAP_UNDEFINSTR 7 /* Undefined instruction */
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#define ARM_TRAP_ALIGNMENT 8 /* Unaligned access exception */
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#if !defined(__ASSEMBLY__)
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#ifdef CONFIG_DOVETAIL
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static inline void arch_dovetail_exec_prepare(void)
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{ }
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static inline void arch_dovetail_switch_prepare(bool leave_inband)
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{ }
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static inline void arch_dovetail_switch_finish(bool enter_inband)
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{ }
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#endif
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/*
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* Pass the trap event to the companion core. Return true if running
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* in-band afterwards.
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*/
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#define mark_cond_trap_entry(__trapnr, __regs) \
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({ \
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oob_trap_notify(__trapnr, __regs); \
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running_inband(); \
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})
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/*
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* Pass the trap event to the companion core. We expect the current
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* context to be running on the in-band stage upon return so that our
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* caller can tread on common kernel code.
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*/
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#define mark_trap_entry(__trapnr, __regs) \
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do { \
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bool __ret = mark_cond_trap_entry(__trapnr, __regs); \
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BUG_ON(dovetail_debug() && !__ret); \
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} while (0)
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#define mark_trap_exit(__trapnr, __regs) \
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oob_trap_unwind(__trapnr, __regs)
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_ARM_DOVETAIL_H */
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