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| author | David A. Long <dave.long@linaro.org> | 2014-03-07 11:23:04 -0500 |
|---|---|---|
| committer | David A. Long <dave.long@linaro.org> | 2014-03-18 16:39:40 -0400 |
| commit | c7edc9e326d53ca5ef9bed82de0740c6b107d55b (patch) | |
| tree | 262d901b5e4d61930d5bc8ff68b9ddd807e3f956 /arch/arm/include/asm/uprobes.h | |
| parent | b4cd605ca92d9a8a2f71355cb45dd943ebcb0c97 (diff) | |
| download | linux-c7edc9e326d53ca5ef9bed82de0740c6b107d55b.tar.bz2 | |
ARM: add uprobes support
Using Rabin Vincent's ARM uprobes patches as a base, enable uprobes
support on ARM.
Caveats:
- Thumb is not supported
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: David A. Long <dave.long@linaro.org>
Diffstat (limited to 'arch/arm/include/asm/uprobes.h')
| -rw-r--r-- | arch/arm/include/asm/uprobes.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/arm/include/asm/uprobes.h b/arch/arm/include/asm/uprobes.h new file mode 100644 index 000000000000..9472c20b7d49 --- /dev/null +++ b/arch/arm/include/asm/uprobes.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2012 Rabin Vincent <rabin at rab.in> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _ASM_UPROBES_H +#define _ASM_UPROBES_H + +#include <asm/probes.h> +#include <asm/opcodes.h> + +typedef u32 uprobe_opcode_t; + +#define MAX_UINSN_BYTES 4 +#define UPROBE_XOL_SLOT_BYTES 64 + +#define UPROBE_SWBP_ARM_INSN 0xe7f001f9 +#define UPROBE_SS_ARM_INSN 0xe7f001fa +#define UPROBE_SWBP_INSN __opcode_to_mem_arm(UPROBE_SWBP_ARM_INSN) +#define UPROBE_SWBP_INSN_SIZE 4 + +struct arch_uprobe_task { + u32 backup; + unsigned long saved_trap_no; +}; + +struct arch_uprobe { + u8 insn[MAX_UINSN_BYTES]; + unsigned long ixol[2]; + uprobe_opcode_t bpinsn; + bool simulate; + u32 pcreg; + void (*prehandler)(struct arch_uprobe *auprobe, + struct arch_uprobe_task *autask, + struct pt_regs *regs); + void (*posthandler)(struct arch_uprobe *auprobe, + struct arch_uprobe_task *autask, + struct pt_regs *regs); + struct arch_probes_insn asi; +}; + +#endif |