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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_OBJTOOL_TYPES_H#define _LINUX_OBJTOOL_TYPES_H
#ifndef __ASSEMBLY__
#include <linux/types.h>
/* * This struct is used by asm and inline asm code to manually annotate the * location of registers on the stack. */struct unwind_hint { u32 ip; s16 sp_offset; u8 sp_reg; u8 type; u8 signal;};
#endif /* __ASSEMBLY__ */
/* * UNWIND_HINT_TYPE_UNDEFINED: A blind spot in ORC coverage which can result in * a truncated and unreliable stack unwind. * * UNWIND_HINT_TYPE_END_OF_STACK: The end of the kernel stack unwind before * hitting user entry, boot code, or fork entry (when there are no pt_regs * available). * * UNWIND_HINT_TYPE_CALL: Indicates that sp_reg+sp_offset resolves to PREV_SP * (the caller's SP right before it made the call). Used for all callable * functions, i.e. all C code and all callable asm functions. * * UNWIND_HINT_TYPE_REGS: Used in entry code to indicate that sp_reg+sp_offset * points to a fully populated pt_regs from a syscall, interrupt, or exception. * * UNWIND_HINT_TYPE_REGS_PARTIAL: Used in entry code to indicate that * sp_reg+sp_offset points to the iret return frame. * * UNWIND_HINT_TYPE_FUNC: Generate the unwind metadata of a callable function. * Useful for code which doesn't have an ELF function annotation. * * UNWIND_HINT_TYPE_{SAVE,RESTORE}: Save the unwind metadata at a certain * location so that it can be restored later. */#define UNWIND_HINT_TYPE_UNDEFINED 0#define UNWIND_HINT_TYPE_END_OF_STACK 1#define UNWIND_HINT_TYPE_CALL 2#define UNWIND_HINT_TYPE_REGS 3#define UNWIND_HINT_TYPE_REGS_PARTIAL 4/* The below hint types don't have corresponding ORC types */#define UNWIND_HINT_TYPE_FUNC 5#define UNWIND_HINT_TYPE_SAVE 6#define UNWIND_HINT_TYPE_RESTORE 7
/* * Annotate types */#define ANNOTYPE_NOENDBR 1#define ANNOTYPE_RETPOLINE_SAFE 2#define ANNOTYPE_INSTR_BEGIN 3#define ANNOTYPE_INSTR_END 4#define ANNOTYPE_UNRET_BEGIN 5#define ANNOTYPE_IGNORE_ALTS 6#define ANNOTYPE_INTRA_FUNCTION_CALL 7#define ANNOTYPE_REACHABLE 8#define ANNOTYPE_NOCFI 9
#define ANNOTYPE_DATA_SPECIAL 1
#endif /* _LINUX_OBJTOOL_TYPES_H */