diff options
Diffstat (limited to 'tools/objtool/arch/x86/include')
| -rw-r--r-- | tools/objtool/arch/x86/include/asm/inat.h | 230 | ||||
| -rw-r--r-- | tools/objtool/arch/x86/include/asm/inat_types.h | 15 | ||||
| -rw-r--r-- | tools/objtool/arch/x86/include/asm/insn.h | 216 | ||||
| -rw-r--r-- | tools/objtool/arch/x86/include/asm/orc_types.h | 97 |
4 files changed, 0 insertions, 558 deletions
diff --git a/tools/objtool/arch/x86/include/asm/inat.h b/tools/objtool/arch/x86/include/asm/inat.h deleted file mode 100644 index 4cf2ad521f65..000000000000 --- a/tools/objtool/arch/x86/include/asm/inat.h +++ /dev/null @@ -1,230 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -#ifndef _ASM_X86_INAT_H -#define _ASM_X86_INAT_H -/* - * x86 instruction attributes - * - * Written by Masami Hiramatsu <mhiramat@redhat.com> - */ -#include <asm/inat_types.h> - -/* - * Internal bits. Don't use bitmasks directly, because these bits are - * unstable. You should use checking functions. - */ - -#define INAT_OPCODE_TABLE_SIZE 256 -#define INAT_GROUP_TABLE_SIZE 8 - -/* Legacy last prefixes */ -#define INAT_PFX_OPNDSZ 1 /* 0x66 */ /* LPFX1 */ -#define INAT_PFX_REPE 2 /* 0xF3 */ /* LPFX2 */ -#define INAT_PFX_REPNE 3 /* 0xF2 */ /* LPFX3 */ -/* Other Legacy prefixes */ -#define INAT_PFX_LOCK 4 /* 0xF0 */ -#define INAT_PFX_CS 5 /* 0x2E */ -#define INAT_PFX_DS 6 /* 0x3E */ -#define INAT_PFX_ES 7 /* 0x26 */ -#define INAT_PFX_FS 8 /* 0x64 */ -#define INAT_PFX_GS 9 /* 0x65 */ -#define INAT_PFX_SS 10 /* 0x36 */ -#define INAT_PFX_ADDRSZ 11 /* 0x67 */ -/* x86-64 REX prefix */ -#define INAT_PFX_REX 12 /* 0x4X */ -/* AVX VEX prefixes */ -#define INAT_PFX_VEX2 13 /* 2-bytes VEX prefix */ -#define INAT_PFX_VEX3 14 /* 3-bytes VEX prefix */ -#define INAT_PFX_EVEX 15 /* EVEX prefix */ - -#define INAT_LSTPFX_MAX 3 -#define INAT_LGCPFX_MAX 11 - -/* Immediate size */ -#define INAT_IMM_BYTE 1 -#define INAT_IMM_WORD 2 -#define INAT_IMM_DWORD 3 -#define INAT_IMM_QWORD 4 -#define INAT_IMM_PTR 5 -#define INAT_IMM_VWORD32 6 -#define INAT_IMM_VWORD 7 - -/* Legacy prefix */ -#define INAT_PFX_OFFS 0 -#define INAT_PFX_BITS 4 -#define INAT_PFX_MAX ((1 << INAT_PFX_BITS) - 1) -#define INAT_PFX_MASK (INAT_PFX_MAX << INAT_PFX_OFFS) -/* Escape opcodes */ -#define INAT_ESC_OFFS (INAT_PFX_OFFS + INAT_PFX_BITS) -#define INAT_ESC_BITS 2 -#define INAT_ESC_MAX ((1 << INAT_ESC_BITS) - 1) -#define INAT_ESC_MASK (INAT_ESC_MAX << INAT_ESC_OFFS) -/* Group opcodes (1-16) */ -#define INAT_GRP_OFFS (INAT_ESC_OFFS + INAT_ESC_BITS) -#define INAT_GRP_BITS 5 -#define INAT_GRP_MAX ((1 << INAT_GRP_BITS) - 1) -#define INAT_GRP_MASK (INAT_GRP_MAX << INAT_GRP_OFFS) -/* Immediates */ -#define INAT_IMM_OFFS (INAT_GRP_OFFS + INAT_GRP_BITS) -#define INAT_IMM_BITS 3 -#define INAT_IMM_MASK (((1 << INAT_IMM_BITS) - 1) << INAT_IMM_OFFS) -/* Flags */ -#define INAT_FLAG_OFFS (INAT_IMM_OFFS + INAT_IMM_BITS) -#define INAT_MODRM (1 << (INAT_FLAG_OFFS)) -#define INAT_FORCE64 (1 << (INAT_FLAG_OFFS + 1)) -#define INAT_SCNDIMM (1 << (INAT_FLAG_OFFS + 2)) -#define INAT_MOFFSET (1 << (INAT_FLAG_OFFS + 3)) -#define INAT_VARIANT (1 << (INAT_FLAG_OFFS + 4)) -#define INAT_VEXOK (1 << (INAT_FLAG_OFFS + 5)) -#define INAT_VEXONLY (1 << (INAT_FLAG_OFFS + 6)) -#define INAT_EVEXONLY (1 << (INAT_FLAG_OFFS + 7)) -/* Attribute making macros for attribute tables */ -#define INAT_MAKE_PREFIX(pfx) (pfx << INAT_PFX_OFFS) -#define INAT_MAKE_ESCAPE(esc) (esc << INAT_ESC_OFFS) -#define INAT_MAKE_GROUP(grp) ((grp << INAT_GRP_OFFS) | INAT_MODRM) -#define INAT_MAKE_IMM(imm) (imm << INAT_IMM_OFFS) - -/* Identifiers for segment registers */ -#define INAT_SEG_REG_IGNORE 0 -#define INAT_SEG_REG_DEFAULT 1 -#define INAT_SEG_REG_CS 2 -#define INAT_SEG_REG_SS 3 -#define INAT_SEG_REG_DS 4 -#define INAT_SEG_REG_ES 5 -#define INAT_SEG_REG_FS 6 -#define INAT_SEG_REG_GS 7 - -/* Attribute search APIs */ -extern insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode); -extern int inat_get_last_prefix_id(insn_byte_t last_pfx); -extern insn_attr_t inat_get_escape_attribute(insn_byte_t opcode, - int lpfx_id, - insn_attr_t esc_attr); -extern insn_attr_t inat_get_group_attribute(insn_byte_t modrm, - int lpfx_id, - insn_attr_t esc_attr); -extern insn_attr_t inat_get_avx_attribute(insn_byte_t opcode, - insn_byte_t vex_m, - insn_byte_t vex_pp); - -/* Attribute checking functions */ -static inline int inat_is_legacy_prefix(insn_attr_t attr) -{ - attr &= INAT_PFX_MASK; - return attr && attr <= INAT_LGCPFX_MAX; -} - -static inline int inat_is_address_size_prefix(insn_attr_t attr) -{ - return (attr & INAT_PFX_MASK) == INAT_PFX_ADDRSZ; -} - -static inline int inat_is_operand_size_prefix(insn_attr_t attr) -{ - return (attr & INAT_PFX_MASK) == INAT_PFX_OPNDSZ; -} - -static inline int inat_is_rex_prefix(insn_attr_t attr) -{ - return (attr & INAT_PFX_MASK) == INAT_PFX_REX; -} - -static inline int inat_last_prefix_id(insn_attr_t attr) -{ - if ((attr & INAT_PFX_MASK) > INAT_LSTPFX_MAX) - return 0; - else - return attr & INAT_PFX_MASK; -} - -static inline int inat_is_vex_prefix(insn_attr_t attr) -{ - attr &= INAT_PFX_MASK; - return attr == INAT_PFX_VEX2 || attr == INAT_PFX_VEX3 || - attr == INAT_PFX_EVEX; -} - -static inline int inat_is_evex_prefix(insn_attr_t attr) -{ - return (attr & INAT_PFX_MASK) == INAT_PFX_EVEX; -} - -static inline int inat_is_vex3_prefix(insn_attr_t attr) -{ - return (attr & INAT_PFX_MASK) == INAT_PFX_VEX3; -} - -static inline int inat_is_escape(insn_attr_t attr) -{ - return attr & INAT_ESC_MASK; -} - -static inline int inat_escape_id(insn_attr_t attr) -{ - return (attr & INAT_ESC_MASK) >> INAT_ESC_OFFS; -} - -static inline int inat_is_group(insn_attr_t attr) -{ - return attr & INAT_GRP_MASK; -} - -static inline int inat_group_id(insn_attr_t attr) -{ - return (attr & INAT_GRP_MASK) >> INAT_GRP_OFFS; -} - -static inline int inat_group_common_attribute(insn_attr_t attr) -{ - return attr & ~INAT_GRP_MASK; -} - -static inline int inat_has_immediate(insn_attr_t attr) -{ - return attr & INAT_IMM_MASK; -} - -static inline int inat_immediate_size(insn_attr_t attr) -{ - return (attr & INAT_IMM_MASK) >> INAT_IMM_OFFS; -} - -static inline int inat_has_modrm(insn_attr_t attr) -{ - return attr & INAT_MODRM; -} - -static inline int inat_is_force64(insn_attr_t attr) -{ - return attr & INAT_FORCE64; -} - -static inline int inat_has_second_immediate(insn_attr_t attr) -{ - return attr & INAT_SCNDIMM; -} - -static inline int inat_has_moffset(insn_attr_t attr) -{ - return attr & INAT_MOFFSET; -} - -static inline int inat_has_variant(insn_attr_t attr) -{ - return attr & INAT_VARIANT; -} - -static inline int inat_accept_vex(insn_attr_t attr) -{ - return attr & INAT_VEXOK; -} - -static inline int inat_must_vex(insn_attr_t attr) -{ - return attr & (INAT_VEXONLY | INAT_EVEXONLY); -} - -static inline int inat_must_evex(insn_attr_t attr) -{ - return attr & INAT_EVEXONLY; -} -#endif diff --git a/tools/objtool/arch/x86/include/asm/inat_types.h b/tools/objtool/arch/x86/include/asm/inat_types.h deleted file mode 100644 index b047efa9ddc2..000000000000 --- a/tools/objtool/arch/x86/include/asm/inat_types.h +++ /dev/null @@ -1,15 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -#ifndef _ASM_X86_INAT_TYPES_H -#define _ASM_X86_INAT_TYPES_H -/* - * x86 instruction attributes - * - * Written by Masami Hiramatsu <mhiramat@redhat.com> - */ - -/* Instruction attributes */ -typedef unsigned int insn_attr_t; -typedef unsigned char insn_byte_t; -typedef signed int insn_value_t; - -#endif diff --git a/tools/objtool/arch/x86/include/asm/insn.h b/tools/objtool/arch/x86/include/asm/insn.h deleted file mode 100644 index 154f27be8bfc..000000000000 --- a/tools/objtool/arch/x86/include/asm/insn.h +++ /dev/null @@ -1,216 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -#ifndef _ASM_X86_INSN_H -#define _ASM_X86_INSN_H -/* - * x86 instruction analysis - * - * Copyright (C) IBM Corporation, 2009 - */ - -/* insn_attr_t is defined in inat.h */ -#include <asm/inat.h> - -struct insn_field { - union { - insn_value_t value; - insn_byte_t bytes[4]; - }; - /* !0 if we've run insn_get_xxx() for this field */ - unsigned char got; - unsigned char nbytes; -}; - -struct insn { - struct insn_field prefixes; /* - * Prefixes - * prefixes.bytes[3]: last prefix - */ - struct insn_field rex_prefix; /* REX prefix */ - struct insn_field vex_prefix; /* VEX prefix */ - struct insn_field opcode; /* - * opcode.bytes[0]: opcode1 - * opcode.bytes[1]: opcode2 - * opcode.bytes[2]: opcode3 - */ - struct insn_field modrm; - struct insn_field sib; - struct insn_field displacement; - union { - struct insn_field immediate; - struct insn_field moffset1; /* for 64bit MOV */ - struct insn_field immediate1; /* for 64bit imm or off16/32 */ - }; - union { - struct insn_field moffset2; /* for 64bit MOV */ - struct insn_field immediate2; /* for 64bit imm or seg16 */ - }; - - insn_attr_t attr; - unsigned char opnd_bytes; - unsigned char addr_bytes; - unsigned char length; - unsigned char x86_64; - - const insn_byte_t *kaddr; /* kernel address of insn to analyze */ - const insn_byte_t *end_kaddr; /* kernel address of last insn in buffer */ - const insn_byte_t *next_byte; -}; - -#define MAX_INSN_SIZE 15 - -#define X86_MODRM_MOD(modrm) (((modrm) & 0xc0) >> 6) -#define X86_MODRM_REG(modrm) (((modrm) & 0x38) >> 3) -#define X86_MODRM_RM(modrm) ((modrm) & 0x07) - -#define X86_SIB_SCALE(sib) (((sib) & 0xc0) >> 6) -#define X86_SIB_INDEX(sib) (((sib) & 0x38) >> 3) -#define X86_SIB_BASE(sib) ((sib) & 0x07) - -#define X86_REX_W(rex) ((rex) & 8) -#define X86_REX_R(rex) ((rex) & 4) -#define X86_REX_X(rex) ((rex) & 2) -#define X86_REX_B(rex) ((rex) & 1) - -/* VEX bit flags */ -#define X86_VEX_W(vex) ((vex) & 0x80) /* VEX3 Byte2 */ -#define X86_VEX_R(vex) ((vex) & 0x80) /* VEX2/3 Byte1 */ -#define X86_VEX_X(vex) ((vex) & 0x40) /* VEX3 Byte1 */ -#define X86_VEX_B(vex) ((vex) & 0x20) /* VEX3 Byte1 */ -#define X86_VEX_L(vex) ((vex) & 0x04) /* VEX3 Byte2, VEX2 Byte1 */ -/* VEX bit fields */ -#define X86_EVEX_M(vex) ((vex) & 0x03) /* EVEX Byte1 */ -#define X86_VEX3_M(vex) ((vex) & 0x1f) /* VEX3 Byte1 */ -#define X86_VEX2_M 1 /* VEX2.M always 1 */ -#define X86_VEX_V(vex) (((vex) & 0x78) >> 3) /* VEX3 Byte2, VEX2 Byte1 */ -#define X86_VEX_P(vex) ((vex) & 0x03) /* VEX3 Byte2, VEX2 Byte1 */ -#define X86_VEX_M_MAX 0x1f /* VEX3.M Maximum value */ - -extern void insn_init(struct insn *insn, const void *kaddr, int buf_len, int x86_64); -extern void insn_get_prefixes(struct insn *insn); -extern void insn_get_opcode(struct insn *insn); -extern void insn_get_modrm(struct insn *insn); -extern void insn_get_sib(struct insn *insn); -extern void insn_get_displacement(struct insn *insn); -extern void insn_get_immediate(struct insn *insn); -extern void insn_get_length(struct insn *insn); - -/* Attribute will be determined after getting ModRM (for opcode groups) */ -static inline void insn_get_attribute(struct insn *insn) -{ - insn_get_modrm(insn); -} - -/* Instruction uses RIP-relative addressing */ -extern int insn_rip_relative(struct insn *insn); - -/* Init insn for kernel text */ -static inline void kernel_insn_init(struct insn *insn, - const void *kaddr, int buf_len) -{ -#ifdef CONFIG_X86_64 - insn_init(insn, kaddr, buf_len, 1); -#else /* CONFIG_X86_32 */ - insn_init(insn, kaddr, buf_len, 0); -#endif -} - -static inline int insn_is_avx(struct insn *insn) -{ - if (!insn->prefixes.got) - insn_get_prefixes(insn); - return (insn->vex_prefix.value != 0); -} - -static inline int insn_is_evex(struct insn *insn) -{ - if (!insn->prefixes.got) - insn_get_prefixes(insn); - return (insn->vex_prefix.nbytes == 4); -} - -/* Ensure this instruction is decoded completely */ -static inline int insn_complete(struct insn *insn) -{ - return insn->opcode.got && insn->modrm.got && insn->sib.got && - insn->displacement.got && insn->immediate.got; -} - -static inline insn_byte_t insn_vex_m_bits(struct insn *insn) -{ - if (insn->vex_prefix.nbytes == 2) /* 2 bytes VEX */ - return X86_VEX2_M; - else if (insn->vex_prefix.nbytes == 3) /* 3 bytes VEX */ - return X86_VEX3_M(insn->vex_prefix.bytes[1]); - else /* EVEX */ - return X86_EVEX_M(insn->vex_prefix.bytes[1]); -} - -static inline insn_byte_t insn_vex_p_bits(struct insn *insn) -{ - if (insn->vex_prefix.nbytes == 2) /* 2 bytes VEX */ - return X86_VEX_P(insn->vex_prefix.bytes[1]); - else - return X86_VEX_P(insn->vex_prefix.bytes[2]); -} - -/* Get the last prefix id from last prefix or VEX prefix */ -static inline int insn_last_prefix_id(struct insn *insn) -{ - if (insn_is_avx(insn)) - return insn_vex_p_bits(insn); /* VEX_p is a SIMD prefix id */ - - if (insn->prefixes.bytes[3]) - return inat_get_last_prefix_id(insn->prefixes.bytes[3]); - - return 0; -} - -/* Offset of each field from kaddr */ -static inline int insn_offset_rex_prefix(struct insn *insn) -{ - return insn->prefixes.nbytes; -} -static inline int insn_offset_vex_prefix(struct insn *insn) -{ - return insn_offset_rex_prefix(insn) + insn->rex_prefix.nbytes; -} -static inline int insn_offset_opcode(struct insn *insn) -{ - return insn_offset_vex_prefix(insn) + insn->vex_prefix.nbytes; -} -static inline int insn_offset_modrm(struct insn *insn) -{ - return insn_offset_opcode(insn) + insn->opcode.nbytes; -} -static inline int insn_offset_sib(struct insn *insn) -{ - return insn_offset_modrm(insn) + insn->modrm.nbytes; -} -static inline int insn_offset_displacement(struct insn *insn) -{ - return insn_offset_sib(insn) + insn->sib.nbytes; -} -static inline int insn_offset_immediate(struct insn *insn) -{ - return insn_offset_displacement(insn) + insn->displacement.nbytes; -} - -#define POP_SS_OPCODE 0x1f -#define MOV_SREG_OPCODE 0x8e - -/* - * Intel SDM Vol.3A 6.8.3 states; - * "Any single-step trap that would be delivered following the MOV to SS - * instruction or POP to SS instruction (because EFLAGS.TF is 1) is - * suppressed." - * This function returns true if @insn is MOV SS or POP SS. On these - * instructions, single stepping is suppressed. - */ -static inline int insn_masking_exception(struct insn *insn) -{ - return insn->opcode.bytes[0] == POP_SS_OPCODE || - (insn->opcode.bytes[0] == MOV_SREG_OPCODE && - X86_MODRM_REG(insn->modrm.bytes[0]) == 2); -} - -#endif /* _ASM_X86_INSN_H */ diff --git a/tools/objtool/arch/x86/include/asm/orc_types.h b/tools/objtool/arch/x86/include/asm/orc_types.h deleted file mode 100644 index 6e060907c163..000000000000 --- a/tools/objtool/arch/x86/include/asm/orc_types.h +++ /dev/null @@ -1,97 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com> - */ - -#ifndef _ORC_TYPES_H -#define _ORC_TYPES_H - -#include <linux/types.h> -#include <linux/compiler.h> - -/* - * The ORC_REG_* registers are base registers which are used to find other - * registers on the stack. - * - * ORC_REG_PREV_SP, also known as DWARF Call Frame Address (CFA), is the - * address of the previous frame: the caller's SP before it called the current - * function. - * - * ORC_REG_UNDEFINED means the corresponding register's value didn't change in - * the current frame. - * - * The most commonly used base registers are SP and BP -- which the previous SP - * is usually based on -- and PREV_SP and UNDEFINED -- which the previous BP is - * usually based on. - * - * The rest of the base registers are needed for special cases like entry code - * and GCC realigned stacks. - */ -#define ORC_REG_UNDEFINED 0 -#define ORC_REG_PREV_SP 1 -#define ORC_REG_DX 2 -#define ORC_REG_DI 3 -#define ORC_REG_BP 4 -#define ORC_REG_SP 5 -#define ORC_REG_R10 6 -#define ORC_REG_R13 7 -#define ORC_REG_BP_INDIRECT 8 -#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_SAVE 3 -#define UNWIND_HINT_TYPE_RESTORE 4 - -#ifndef __ASSEMBLY__ -/* - * This struct is more or less a vastly simplified version of the DWARF Call - * Frame Information standard. It contains only the necessary parts of DWARF - * CFI, simplified for ease of access by the in-kernel unwinder. It tells the - * unwinder how to find the previous SP and BP (and sometimes entry regs) on - * the stack for a given code address. Each instance of the struct corresponds - * to one or more code locations. - */ -struct orc_entry { - s16 sp_offset; - s16 bp_offset; - unsigned sp_reg:4; - unsigned bp_reg:4; - unsigned type:2; - 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 */ |
