140e084a5SRalf Baechle /* 240e084a5SRalf Baechle * This file is subject to the terms and conditions of the GNU General Public 340e084a5SRalf Baechle * License. See the file "COPYING" in the main directory of this archive 440e084a5SRalf Baechle * for more details. 540e084a5SRalf Baechle */ 640e084a5SRalf Baechle #ifndef __ASM_UPROBES_H 740e084a5SRalf Baechle #define __ASM_UPROBES_H 840e084a5SRalf Baechle 940e084a5SRalf Baechle #include <linux/notifier.h> 1040e084a5SRalf Baechle #include <linux/types.h> 1140e084a5SRalf Baechle 1240e084a5SRalf Baechle #include <asm/break.h> 1340e084a5SRalf Baechle #include <asm/inst.h> 1440e084a5SRalf Baechle 1540e084a5SRalf Baechle /* 1640e084a5SRalf Baechle * We want this to be defined as union mips_instruction but that makes the 1740e084a5SRalf Baechle * generic code blow up. 1840e084a5SRalf Baechle */ 1940e084a5SRalf Baechle typedef u32 uprobe_opcode_t; 2040e084a5SRalf Baechle 2140e084a5SRalf Baechle /* 2240e084a5SRalf Baechle * Classic MIPS (note this implementation doesn't consider microMIPS yet) 2340e084a5SRalf Baechle * instructions are always 4 bytes but in order to deal with branches and 2440e084a5SRalf Baechle * their delay slots, we treat instructions as having 8 bytes maximum. 2540e084a5SRalf Baechle */ 2640e084a5SRalf Baechle #define MAX_UINSN_BYTES 8 2740e084a5SRalf Baechle #define UPROBE_XOL_SLOT_BYTES 128 /* Max. cache line size */ 2840e084a5SRalf Baechle 2940e084a5SRalf Baechle #define UPROBE_BRK_UPROBE 0x000d000d /* break 13 */ 3040e084a5SRalf Baechle #define UPROBE_BRK_UPROBE_XOL 0x000e000d /* break 14 */ 3140e084a5SRalf Baechle 3240e084a5SRalf Baechle #define UPROBE_SWBP_INSN UPROBE_BRK_UPROBE 3340e084a5SRalf Baechle #define UPROBE_SWBP_INSN_SIZE 4 3440e084a5SRalf Baechle 3540e084a5SRalf Baechle struct arch_uprobe { 3640e084a5SRalf Baechle unsigned long resume_epc; 3740e084a5SRalf Baechle u32 insn[2]; 3840e084a5SRalf Baechle u32 ixol[2]; 3940e084a5SRalf Baechle }; 4040e084a5SRalf Baechle 4140e084a5SRalf Baechle struct arch_uprobe_task { 4240e084a5SRalf Baechle unsigned long saved_trap_nr; 4340e084a5SRalf Baechle }; 4440e084a5SRalf Baechle 4540e084a5SRalf Baechle #endif /* __ASM_UPROBES_H */ 46