74784081aa
This patch adds support for uprobes on riscv architecture. Just like kprobe, it support single-step and simulate instructions. Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Reviewed-by: Pekka Enberg <penberg@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Palmer Dabbelt <palmerdabbelt@google.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
41 lines
828 B
C
41 lines
828 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _ASM_RISCV_UPROBES_H
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#define _ASM_RISCV_UPROBES_H
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#include <asm/probes.h>
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#include <asm/patch.h>
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#include <asm/bug.h>
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#define MAX_UINSN_BYTES 8
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#ifdef CONFIG_RISCV_ISA_C
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#define UPROBE_SWBP_INSN __BUG_INSN_16
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#define UPROBE_SWBP_INSN_SIZE 2
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#else
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#define UPROBE_SWBP_INSN __BUG_INSN_32
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#define UPROBE_SWBP_INSN_SIZE 4
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#endif
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#define UPROBE_XOL_SLOT_BYTES MAX_UINSN_BYTES
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typedef u32 uprobe_opcode_t;
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struct arch_uprobe_task {
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unsigned long saved_cause;
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};
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struct arch_uprobe {
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union {
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u8 insn[MAX_UINSN_BYTES];
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u8 ixol[MAX_UINSN_BYTES];
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};
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struct arch_probe_insn api;
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unsigned long insn_size;
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bool simulate;
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};
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bool uprobe_breakpoint_handler(struct pt_regs *regs);
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bool uprobe_single_step_handler(struct pt_regs *regs);
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#endif /* _ASM_RISCV_UPROBES_H */
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