1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef _ASM_RISCV_UPROBES_H 4 #define _ASM_RISCV_UPROBES_H 5 6 #include <asm/probes.h> 7 #include <asm/patch.h> 8 #include <asm/bug.h> 9 10 #define MAX_UINSN_BYTES 8 11 12 #ifdef CONFIG_RISCV_ISA_C 13 #define UPROBE_SWBP_INSN __BUG_INSN_16 14 #define UPROBE_SWBP_INSN_SIZE 2 15 #else 16 #define UPROBE_SWBP_INSN __BUG_INSN_32 17 #define UPROBE_SWBP_INSN_SIZE 4 18 #endif 19 #define UPROBE_XOL_SLOT_BYTES MAX_UINSN_BYTES 20 21 typedef u32 uprobe_opcode_t; 22 23 struct arch_uprobe_task { 24 unsigned long saved_cause; 25 }; 26 27 struct arch_uprobe { 28 union { 29 u8 insn[MAX_UINSN_BYTES]; 30 u8 ixol[MAX_UINSN_BYTES]; 31 }; 32 struct arch_probe_insn api; 33 unsigned long insn_size; 34 bool simulate; 35 }; 36 37 #ifdef CONFIG_UPROBES 38 bool uprobe_breakpoint_handler(struct pt_regs *regs); 39 bool uprobe_single_step_handler(struct pt_regs *regs); 40 #else 41 static inline bool uprobe_breakpoint_handler(struct pt_regs *regs) 42 { 43 return false; 44 } 45 46 static inline bool uprobe_single_step_handler(struct pt_regs *regs) 47 { 48 return false; 49 } 50 #endif /* CONFIG_UPROBES */ 51 #endif /* _ASM_RISCV_UPROBES_H */ 52