2 * @file uprobe/arch/asm-arm/swap_uprobes.h
3 * @author Alexey Gerenkov <a.gerenkov@samsung.com> User-Space Probes initial
4 * implementation; Support x86/ARM/MIPS for both user and kernel spaces.
5 * @author Ekaterina Gorelkina <e.gorelkina@samsung.com>: redesign module for
6 * separating core and arch parts
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 * Copyright (C) Samsung Electronics, 2006-2010
28 * @section DESCRIPTION
30 * Arch-dependent uprobe interface declaration.
34 #ifndef _ARM_SWAP_UPROBES_H
35 #define _ARM_SWAP_UPROBES_H
38 #include <linux/uaccess.h>
39 #include <swap-asm/swap_kprobes.h> /* FIXME: for UPROBES_TRAMP_LEN */
45 struct uretprobe_instance;
47 typedef unsigned long uprobe_opcode_t;
51 * @brief Architecture depend copy of original instruction.
52 * @var arch_insn::insn
53 * Copy of the original instruction.
56 uprobe_opcode_t *insn;
61 * @brief Stores arch-dependent trampolines.
64 unsigned long tramp_arm[UPROBES_TRAMP_LEN]; /**< ARM trampoline */
65 unsigned long tramp_thumb[UPROBES_TRAMP_LEN]; /**< Thumb trampoline */
66 void *utramp; /**< Pointer to trampoline */
70 static inline u32 swap_get_urp_float(struct pt_regs *regs)
75 static inline u64 swap_get_urp_double(struct pt_regs *regs)
78 return regs->ARM_r0 | (u64)regs->ARM_r1 << 32;
81 static inline void arch_ujprobe_return(void)
85 int arch_prepare_uprobe(struct uprobe *up);
87 int setjmp_upre_handler(struct uprobe *p, struct pt_regs *regs);
88 static inline int longjmp_break_uhandler(struct uprobe *p, struct pt_regs *regs)
93 void arch_opcode_analysis_uretprobe(struct uretprobe *rp);
94 int arch_prepare_uretprobe(struct uretprobe_instance *ri, struct pt_regs *regs);
95 int arch_disarm_urp_inst(struct uretprobe_instance *ri,
96 struct task_struct *task, unsigned long tr);
97 unsigned long arch_tramp_by_ri(struct uretprobe_instance *ri);
99 unsigned long arch_get_trampoline_addr(struct uprobe *p, struct pt_regs *regs);
100 void arch_set_orig_ret_addr(unsigned long orig_ret_addr, struct pt_regs *regs);
101 void arch_remove_uprobe(struct uprobe *up);
102 int arch_arm_uprobe(struct uprobe *p);
103 void arch_disarm_uprobe(struct uprobe *p, struct task_struct *task);
105 static inline unsigned long swap_get_uarg(struct pt_regs *regs, unsigned long n)
120 ptr = (u32 *)regs->ARM_sp + n - 4;
121 if (get_user(addr, ptr))
122 printk(KERN_INFO "failed to dereference a pointer, ptr=%p\n",
128 static inline void swap_put_uarg(struct pt_regs *regs, unsigned long n,
147 ptr = (u32 *)regs->ARM_sp + n - 4;
148 if (put_user(val, ptr))
149 pr_err("failed to dereference a pointer[%p]\n", ptr);
153 int swap_arch_init_uprobes(void);
154 void swap_arch_exit_uprobes(void);
156 #endif /* _ARM_SWAP_UPROBES_H */