From ee819aedf34a8f35cd54ee3967c7beb4d1d4a635 Mon Sep 17 00:00:00 2001 From: Julien Thierry Date: Fri, 4 Sep 2020 16:30:27 +0100 Subject: objtool: Make unwind hint definitions available to other architectures Unwind hints are useful to provide objtool with information about stack states in non-standard functions/code. While the type of information being provided might be very arch specific, the mechanism to provide the information can be useful for other architectures. Move the relevant unwint hint definitions for all architectures to see. [ jpoimboe: REGS_IRET -> REGS_PARTIAL ] Signed-off-by: Julien Thierry Signed-off-by: Josh Poimboeuf --- tools/arch/x86/include/asm/orc_types.h | 34 ---------------------------------- 1 file changed, 34 deletions(-) (limited to 'tools/arch') diff --git a/tools/arch/x86/include/asm/orc_types.h b/tools/arch/x86/include/asm/orc_types.h index d25534940bde..fdbffec4cfde 100644 --- a/tools/arch/x86/include/asm/orc_types.h +++ b/tools/arch/x86/include/asm/orc_types.h @@ -39,27 +39,6 @@ #define ORC_REG_SP_INDIRECT 9 #define ORC_REG_MAX 15 -/* - * ORC_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. - * - * ORC_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. - * - * ORC_TYPE_REGS_IRET: Used in entry code to indicate that sp_reg+sp_offset - * points to the iret return frame. - * - * The UNWIND_HINT macros are used only for the unwind_hint struct. They - * aren't used in struct orc_entry due to size and complexity constraints. - * Objtool converts them to real types when it converts the hints to orc - * entries. - */ -#define ORC_TYPE_CALL 0 -#define ORC_TYPE_REGS 1 -#define ORC_TYPE_REGS_IRET 2 -#define UNWIND_HINT_TYPE_RET_OFFSET 3 - #ifndef __ASSEMBLY__ /* * This struct is more or less a vastly simplified version of the DWARF Call @@ -78,19 +57,6 @@ struct orc_entry { unsigned end:1; } __packed; -/* - * This struct is used by asm and inline asm code to manually annotate the - * location of registers on the stack for the ORC unwinder. - * - * Type can be either ORC_TYPE_* or UNWIND_HINT_TYPE_*. - */ -struct unwind_hint { - u32 ip; - s16 sp_offset; - u8 sp_reg; - u8 type; - u8 end; -}; #endif /* __ASSEMBLY__ */ #endif /* _ORC_TYPES_H */ -- cgit v1.2.3-70-g09d2