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a8b8cce9d9
Now that debug exceptions are handled individually and without the need for dynamic registration, remove the unused registration infrastructure. This removes the external caller for `debug_exception_enter()` and `debug_exception_exit()`. Make them static again and remove them from the header. Remove `early_brk64()` as it has been made redundant by (arm64: debug: split brk64 exception entry) and is not used anymore. Note : in `early_brk64()` `bug_brk_handler()` is called unconditionally as a fall-through, but now `call_break_hook()` only calls it if the immediate matches. This does not change the behaviour in early boot, as if `bug_brk_handler()` was called on a non-BUG immediate it would return DBG_HOOK_ERROR anyway, which `call_break_hook()` will do if no immediate matches. Remove `trap_init()`, as it would be empty and a weak definition already exists in `init/main.c`. Signed-off-by: Ada Couprie Diaz <ada.coupriediaz@arm.com> Tested-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com> Reviewed-by: Will Deacon <will@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20250707114109.35672-14-ada.coupriediaz@arm.com Signed-off-by: Will Deacon <will@kernel.org>
95 lines
3.9 KiB
C
95 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Based on arch/arm/include/asm/exception.h
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*
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_EXCEPTION_H
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#define __ASM_EXCEPTION_H
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#include <asm/esr.h>
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#include <asm/ptrace.h>
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#include <linux/interrupt.h>
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#define __exception_irq_entry __irq_entry
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static inline unsigned long disr_to_esr(u64 disr)
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{
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unsigned long esr = ESR_ELx_EC_SERROR << ESR_ELx_EC_SHIFT;
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if ((disr & DISR_EL1_IDS) == 0)
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esr |= (disr & DISR_EL1_ESR_MASK);
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else
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esr |= (disr & ESR_ELx_ISS_MASK);
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return esr;
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}
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asmlinkage void __noreturn handle_bad_stack(struct pt_regs *regs);
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asmlinkage void el1t_64_sync_handler(struct pt_regs *regs);
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asmlinkage void el1t_64_irq_handler(struct pt_regs *regs);
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asmlinkage void el1t_64_fiq_handler(struct pt_regs *regs);
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asmlinkage void el1t_64_error_handler(struct pt_regs *regs);
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asmlinkage void el1h_64_sync_handler(struct pt_regs *regs);
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asmlinkage void el1h_64_irq_handler(struct pt_regs *regs);
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asmlinkage void el1h_64_fiq_handler(struct pt_regs *regs);
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asmlinkage void el1h_64_error_handler(struct pt_regs *regs);
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asmlinkage void el0t_64_sync_handler(struct pt_regs *regs);
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asmlinkage void el0t_64_irq_handler(struct pt_regs *regs);
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asmlinkage void el0t_64_fiq_handler(struct pt_regs *regs);
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asmlinkage void el0t_64_error_handler(struct pt_regs *regs);
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asmlinkage void el0t_32_sync_handler(struct pt_regs *regs);
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asmlinkage void el0t_32_irq_handler(struct pt_regs *regs);
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asmlinkage void el0t_32_fiq_handler(struct pt_regs *regs);
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asmlinkage void el0t_32_error_handler(struct pt_regs *regs);
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asmlinkage void call_on_irq_stack(struct pt_regs *regs,
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void (*func)(struct pt_regs *));
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asmlinkage void asm_exit_to_user_mode(struct pt_regs *regs);
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void do_mem_abort(unsigned long far, unsigned long esr, struct pt_regs *regs);
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void do_el0_undef(struct pt_regs *regs, unsigned long esr);
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void do_el1_undef(struct pt_regs *regs, unsigned long esr);
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void do_el0_bti(struct pt_regs *regs);
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void do_el1_bti(struct pt_regs *regs, unsigned long esr);
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void do_el0_gcs(struct pt_regs *regs, unsigned long esr);
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void do_el1_gcs(struct pt_regs *regs, unsigned long esr);
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#ifdef CONFIG_HAVE_HW_BREAKPOINT
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void do_breakpoint(unsigned long esr, struct pt_regs *regs);
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void do_watchpoint(unsigned long addr, unsigned long esr,
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struct pt_regs *regs);
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#else
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static inline void do_breakpoint(unsigned long esr, struct pt_regs *regs) {}
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static inline void do_watchpoint(unsigned long addr, unsigned long esr,
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struct pt_regs *regs) {}
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#endif /* CONFIG_HAVE_HW_BREAKPOINT */
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void do_el0_softstep(unsigned long esr, struct pt_regs *regs);
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void do_el1_softstep(unsigned long esr, struct pt_regs *regs);
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void do_el0_brk64(unsigned long esr, struct pt_regs *regs);
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void do_el1_brk64(unsigned long esr, struct pt_regs *regs);
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void do_bkpt32(unsigned long esr, struct pt_regs *regs);
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void do_fpsimd_acc(unsigned long esr, struct pt_regs *regs);
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void do_sve_acc(unsigned long esr, struct pt_regs *regs);
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void do_sme_acc(unsigned long esr, struct pt_regs *regs);
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void do_fpsimd_exc(unsigned long esr, struct pt_regs *regs);
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void do_el0_sys(unsigned long esr, struct pt_regs *regs);
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void do_sp_pc_abort(unsigned long addr, unsigned long esr, struct pt_regs *regs);
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void bad_el0_sync(struct pt_regs *regs, int reason, unsigned long esr);
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void do_el0_cp15(unsigned long esr, struct pt_regs *regs);
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int do_compat_alignment_fixup(unsigned long addr, struct pt_regs *regs);
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void do_el0_svc(struct pt_regs *regs);
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void do_el0_svc_compat(struct pt_regs *regs);
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void do_el0_fpac(struct pt_regs *regs, unsigned long esr);
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void do_el1_fpac(struct pt_regs *regs, unsigned long esr);
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void do_el0_mops(struct pt_regs *regs, unsigned long esr);
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void do_el1_mops(struct pt_regs *regs, unsigned long esr);
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void do_serror(struct pt_regs *regs, unsigned long esr);
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void do_signal(struct pt_regs *regs);
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void __noreturn panic_bad_stack(struct pt_regs *regs, unsigned long esr, unsigned long far);
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#endif /* __ASM_EXCEPTION_H */
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