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6e32036333
For now, we can use larch_insn_gen_break() to define KPROBE_BP_INSN and KPROBE_SSTEPBP_INSN. Because larch_insn_gen_break() returns instruction word, define kprobe_opcode_t as u32, then do some small changes related with type conversion, no functional change intended. Tested-by: Jeff Xie <xiehuan09@gmail.com> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __ASM_LOONGARCH_KPROBES_H
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#define __ASM_LOONGARCH_KPROBES_H
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#include <asm-generic/kprobes.h>
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#ifdef CONFIG_KPROBES
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#include <asm/inst.h>
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#include <asm/cacheflush.h>
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#define __ARCH_WANT_KPROBES_INSN_SLOT
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#define MAX_INSN_SIZE 2
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#define flush_insn_slot(p) \
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do { \
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if (p->addr) \
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flush_icache_range((unsigned long)p->addr, \
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(unsigned long)p->addr + \
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(MAX_INSN_SIZE * sizeof(kprobe_opcode_t))); \
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} while (0)
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#define kretprobe_blacklist_size 0
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typedef u32 kprobe_opcode_t;
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/* Architecture specific copy of original instruction */
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struct arch_specific_insn {
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/* copy of the original instruction */
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kprobe_opcode_t *insn;
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/* restore address after simulation */
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unsigned long restore;
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};
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struct prev_kprobe {
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struct kprobe *kp;
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unsigned int status;
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};
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/* per-cpu kprobe control block */
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struct kprobe_ctlblk {
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unsigned int kprobe_status;
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unsigned long saved_status;
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struct prev_kprobe prev_kprobe;
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};
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void arch_remove_kprobe(struct kprobe *p);
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bool kprobe_fault_handler(struct pt_regs *regs, int trapnr);
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bool kprobe_breakpoint_handler(struct pt_regs *regs);
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bool kprobe_singlestep_handler(struct pt_regs *regs);
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#else /* !CONFIG_KPROBES */
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static inline bool kprobe_breakpoint_handler(struct pt_regs *regs) { return false; }
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static inline bool kprobe_singlestep_handler(struct pt_regs *regs) { return false; }
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#endif /* CONFIG_KPROBES */
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#endif /* __ASM_LOONGARCH_KPROBES_H */
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