tools/arch/arm64/include/asm/brk-imm.h

Source file repositories/reference/linux-study-clean/tools/arch/arm64/include/asm/brk-imm.h

File Facts

System
Linux kernel
Corpus path
tools/arch/arm64/include/asm/brk-imm.h
Extension
.h
Size
1296 bytes
Lines
43
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_BRK_IMM_H
#define __ASM_BRK_IMM_H

/*
 * #imm16 values used for BRK instruction generation
 * 0x004: for installing kprobes
 * 0x005: for installing uprobes
 * 0x006: for kprobe software single-step
 * 0x007: for kretprobe return
 * Allowed values for kgdb are 0x400 - 0x7ff
 * 0x100: for triggering a fault on purpose (reserved)
 * 0x400: for dynamic BRK instruction
 * 0x401: for compile time BRK instruction
 * 0x800: kernel-mode BUG() and WARN() traps
 * 0x9xx: tag-based KASAN trap (allowed values 0x900 - 0x9ff)
 * 0x55xx: Undefined Behavior Sanitizer traps ('U' << 8)
 * 0x8xxx: Control-Flow Integrity traps
 */
#define KPROBES_BRK_IMM			0x004
#define UPROBES_BRK_IMM			0x005
#define KPROBES_BRK_SS_IMM		0x006
#define KRETPROBES_BRK_IMM		0x007
#define FAULT_BRK_IMM			0x100
#define KGDB_DYN_DBG_BRK_IMM		0x400
#define KGDB_COMPILED_DBG_BRK_IMM	0x401
#define BUG_BRK_IMM			0x800
#define KASAN_BRK_IMM			0x900
#define KASAN_BRK_MASK			0x0ff
#define UBSAN_BRK_IMM			0x5500
#define UBSAN_BRK_MASK			0x00ff

#define CFI_BRK_IMM_TARGET		GENMASK(4, 0)
#define CFI_BRK_IMM_TYPE		GENMASK(9, 5)
#define CFI_BRK_IMM_BASE		0x8000
#define CFI_BRK_IMM_MASK		(CFI_BRK_IMM_TARGET | CFI_BRK_IMM_TYPE)

#endif

Annotation

Implementation Notes