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-rw-r--r--tools/objtool/include/objtool/arch.h120
-rw-r--r--tools/objtool/include/objtool/builtin.h63
-rw-r--r--tools/objtool/include/objtool/cfi.h42
-rw-r--r--tools/objtool/include/objtool/check.h192
-rw-r--r--tools/objtool/include/objtool/checksum.h60
-rw-r--r--tools/objtool/include/objtool/checksum_types.h25
-rw-r--r--tools/objtool/include/objtool/disas.h81
-rw-r--r--tools/objtool/include/objtool/elf.h583
-rw-r--r--tools/objtool/include/objtool/endianness.h37
-rw-r--r--tools/objtool/include/objtool/klp.h63
-rw-r--r--tools/objtool/include/objtool/objtool.h54
-rw-r--r--tools/objtool/include/objtool/orc.h14
-rw-r--r--tools/objtool/include/objtool/special.h50
-rw-r--r--tools/objtool/include/objtool/trace.h141
-rw-r--r--tools/objtool/include/objtool/util.h19
-rw-r--r--tools/objtool/include/objtool/warn.h168
16 files changed, 1712 insertions, 0 deletions
diff --git a/tools/objtool/include/objtool/arch.h b/tools/objtool/include/objtool/arch.h
new file mode 100644
index 000000000..96d828a84
--- /dev/null
+++ b/tools/objtool/include/objtool/arch.h
@@ -0,0 +1,120 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#ifndef _ARCH_H
+#define _ARCH_H
+
+#include <stdbool.h>
+#include <linux/list.h>
+#include <objtool/objtool.h>
+#include <objtool/cfi.h>
+
+enum insn_type {
+ INSN_JUMP_CONDITIONAL,
+ INSN_JUMP_UNCONDITIONAL,
+ INSN_JUMP_DYNAMIC,
+ INSN_JUMP_DYNAMIC_CONDITIONAL,
+ INSN_CALL,
+ INSN_CALL_DYNAMIC,
+ INSN_RETURN,
+ INSN_SYSCALL,
+ INSN_SYSRET,
+ INSN_BUG,
+ INSN_NOP,
+ INSN_STAC,
+ INSN_CLAC,
+ INSN_STD,
+ INSN_CLD,
+ INSN_TRAP,
+ INSN_ENDBR,
+ INSN_LEA_RIP,
+ INSN_OTHER,
+};
+
+enum op_dest_type {
+ OP_DEST_REG,
+ OP_DEST_REG_INDIRECT,
+ OP_DEST_MEM,
+ OP_DEST_PUSH,
+ OP_DEST_PUSHF,
+};
+
+struct op_dest {
+ enum op_dest_type type;
+ unsigned char reg;
+ int offset;
+};
+
+enum op_src_type {
+ OP_SRC_REG,
+ OP_SRC_REG_INDIRECT,
+ OP_SRC_CONST,
+ OP_SRC_POP,
+ OP_SRC_POPF,
+ OP_SRC_ADD,
+ OP_SRC_AND,
+};
+
+struct op_src {
+ enum op_src_type type;
+ unsigned char reg;
+ int offset;
+};
+
+struct stack_op {
+ struct stack_op *next;
+ struct op_dest dest;
+ struct op_src src;
+};
+
+struct instruction;
+
+int arch_ftrace_match(const char *name);
+
+void arch_initial_func_cfi_state(struct cfi_init_state *state);
+
+int arch_decode_instruction(struct objtool_file *file, const struct section *sec,
+ unsigned long offset, unsigned int maxlen,
+ struct instruction *insn);
+
+size_t arch_jump_opcode_bytes(struct objtool_file *file, struct instruction *insn,
+ unsigned char *buf);
+
+bool arch_callee_saved_reg(unsigned char reg);
+
+unsigned long arch_jump_destination(struct instruction *insn);
+
+s64 arch_insn_adjusted_addend(struct instruction *insn, struct reloc *reloc);
+u64 arch_adjusted_addend(struct reloc *reloc);
+
+const char *arch_nop_insn(int len);
+const char *arch_ret_insn(int len);
+
+int arch_decode_hint_reg(u8 sp_reg, int *base);
+
+bool arch_is_retpoline(struct symbol *sym);
+bool arch_is_rethunk(struct symbol *sym);
+bool arch_is_embedded_insn(struct symbol *sym);
+
+int arch_rewrite_retpolines(struct objtool_file *file);
+
+bool arch_pc_relative_reloc(struct reloc *reloc);
+bool arch_absolute_reloc(struct elf *elf, struct reloc *reloc);
+
+unsigned int arch_reloc_size(struct reloc *reloc);
+unsigned long arch_jump_table_sym_offset(struct reloc *reloc, struct reloc *table);
+
+extern const char *arch_reg_name[CFI_NUM_REGS];
+
+#ifdef DISAS
+
+#include <bfd.h>
+#include <dis-asm.h>
+
+int arch_disas_info_init(struct disassemble_info *dinfo);
+
+#endif /* DISAS */
+
+#endif /* _ARCH_H */
diff --git a/tools/objtool/include/objtool/builtin.h b/tools/objtool/include/objtool/builtin.h
new file mode 100644
index 000000000..349690bb1
--- /dev/null
+++ b/tools/objtool/include/objtool/builtin.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+#ifndef _BUILTIN_H
+#define _BUILTIN_H
+
+#include <subcmd/parse-options.h>
+
+struct opts {
+ /* actions: */
+ bool checksum;
+ const char *disas;
+ bool dump_orc;
+ bool hack_jump_label;
+ bool hack_noinstr;
+ bool hack_skylake;
+ bool ibt;
+ bool klp_symids;
+ bool mcount;
+ bool noabs;
+ bool noinstr;
+ bool orc;
+ int prefix;
+ bool retpoline;
+ bool rethunk;
+ bool unret;
+ bool sls;
+ bool stackval;
+ bool static_call;
+ bool uaccess;
+
+ /* options: */
+ bool backtrace;
+ bool backup;
+ bool cfi;
+ const char *debug_checksum;
+ bool dryrun;
+ bool fineibt;
+ bool link;
+ bool mnop;
+ bool module;
+ bool no_unreachable;
+ const char *output;
+ bool sec_address;
+ bool stats;
+ const char *trace;
+ bool verbose;
+ bool werror;
+ bool wide;
+};
+
+extern struct opts opts;
+
+int cmd_parse_options(int argc, const char **argv, const char * const usage[]);
+
+int objtool_run(int argc, const char **argv);
+
+int make_backup(void);
+
+int cmd_klp(int argc, const char **argv);
+
+#endif /* _BUILTIN_H */
diff --git a/tools/objtool/include/objtool/cfi.h b/tools/objtool/include/objtool/cfi.h
new file mode 100644
index 000000000..c8a6bec4f
--- /dev/null
+++ b/tools/objtool/include/objtool/cfi.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#ifndef _OBJTOOL_CFI_H
+#define _OBJTOOL_CFI_H
+
+#include <arch/cfi_regs.h>
+#include <linux/list.h>
+
+#define CFI_UNDEFINED -1
+#define CFI_CFA -2
+#define CFI_SP_INDIRECT -3
+#define CFI_BP_INDIRECT -4
+
+struct cfi_reg {
+ int base;
+ int offset;
+};
+
+struct cfi_init_state {
+ struct cfi_reg regs[CFI_NUM_REGS];
+ struct cfi_reg cfa;
+};
+
+struct cfi_state {
+ struct hlist_node hash; /* must be first, cficmp() */
+ struct cfi_reg regs[CFI_NUM_REGS];
+ struct cfi_reg vals[CFI_NUM_REGS];
+ struct cfi_reg cfa;
+ int stack_size;
+ int drap_reg, drap_offset;
+ unsigned char type;
+ bool bp_scratch;
+ bool drap;
+ bool signal;
+ bool end;
+ bool force_undefined;
+};
+
+#endif /* _OBJTOOL_CFI_H */
diff --git a/tools/objtool/include/objtool/check.h b/tools/objtool/include/objtool/check.h
new file mode 100644
index 000000000..063f5985f
--- /dev/null
+++ b/tools/objtool/include/objtool/check.h
@@ -0,0 +1,192 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#ifndef _CHECK_H
+#define _CHECK_H
+
+#include <stdbool.h>
+#include <objtool/cfi.h>
+#include <objtool/arch.h>
+
+struct insn_state {
+ struct cfi_state cfi;
+ unsigned int uaccess_stack;
+ bool uaccess;
+ bool df;
+ bool noinstr;
+ s8 instr;
+};
+
+struct alt_group {
+ /*
+ * Pointer from a replacement group to the original group. NULL if it
+ * *is* the original group.
+ */
+ struct alt_group *orig_group;
+
+ /* First and last instructions in the group */
+ struct instruction *first_insn, *last_insn, *nop;
+
+ /*
+ * Byte-offset-addressed len-sized array of pointers to CFI structs.
+ * This is shared with the other alt_groups in the same alternative.
+ */
+ struct cfi_state **cfi;
+
+ bool ignore;
+ unsigned int feature;
+};
+
+enum alternative_type {
+ ALT_TYPE_INSTRUCTIONS,
+ ALT_TYPE_JUMP_TABLE,
+ ALT_TYPE_EX_TABLE,
+};
+
+struct alternative {
+ struct alternative *next;
+ struct instruction *insn;
+ enum alternative_type type;
+};
+
+#define INSN_CHUNK_BITS 8
+#define INSN_CHUNK_SIZE (1 << INSN_CHUNK_BITS)
+#define INSN_CHUNK_MAX (INSN_CHUNK_SIZE - 1)
+
+struct instruction {
+ struct hlist_node hash;
+ struct list_head call_node;
+ struct section *sec;
+ unsigned long offset;
+ unsigned long immediate;
+
+ u8 len;
+ u8 prev_len;
+ u8 type;
+ s8 instr;
+
+ u32 idx : INSN_CHUNK_BITS,
+ immediate_len : 4,
+ dead_end : 1,
+ ignore_alts : 1,
+ hint : 1,
+ save : 1,
+ restore : 1,
+ retpoline_safe : 1,
+ noendbr : 1,
+ unret : 1,
+ visited : 4,
+ no_reloc : 1,
+ hole : 1,
+ fake : 1,
+ trace : 1;
+ /* 4 bit hole */
+
+ struct alt_group *alt_group;
+ struct instruction *jump_dest;
+ struct instruction *first_jump_src;
+ union {
+ struct symbol *_call_dest;
+ struct {
+ struct reloc *_jump_table;
+ unsigned long _jump_table_size;
+ };
+ };
+ struct alternative *alts;
+ struct symbol *_sym;
+ struct stack_op *stack_ops;
+ struct cfi_state *cfi;
+};
+
+/*
+ * Return the symbol associated with an instruction. For alternative
+ * replacements, return the symbol of the original code being replaced rather
+ * than NULL. insn->_sym reflects the actual location in the ELF file.
+ */
+static inline struct symbol *insn_sym(struct instruction *insn)
+{
+ struct symbol *sym = insn->_sym;
+
+ if ((!sym || !is_func_sym(sym)) &&
+ insn->alt_group && insn->alt_group->orig_group)
+ sym = insn->alt_group->orig_group->first_insn->_sym;
+
+ return sym;
+}
+
+static inline struct symbol *insn_func(struct instruction *insn)
+{
+ struct symbol *sym = insn_sym(insn);
+
+ if (sym && sym->type != STT_FUNC)
+ sym = NULL;
+
+ return sym;
+}
+
+#define VISITED_BRANCH 0x01
+#define VISITED_BRANCH_UACCESS 0x02
+#define VISITED_BRANCH_MASK 0x03
+#define VISITED_UNRET 0x04
+
+static inline bool is_static_jump(struct instruction *insn)
+{
+ return insn->type == INSN_JUMP_CONDITIONAL ||
+ insn->type == INSN_JUMP_UNCONDITIONAL;
+}
+
+static inline bool is_dynamic_jump(struct instruction *insn)
+{
+ return insn->type == INSN_JUMP_DYNAMIC ||
+ insn->type == INSN_JUMP_DYNAMIC_CONDITIONAL;
+}
+
+static inline bool is_jump(struct instruction *insn)
+{
+ return is_static_jump(insn) || is_dynamic_jump(insn);
+}
+
+static inline struct symbol *insn_call_dest(struct instruction *insn)
+{
+ if (insn->type == INSN_JUMP_DYNAMIC ||
+ insn->type == INSN_CALL_DYNAMIC)
+ return NULL;
+
+ return insn->_call_dest;
+}
+
+struct instruction *find_insn(struct objtool_file *file,
+ struct section *sec, unsigned long offset);
+
+struct instruction *next_insn_same_sec(struct objtool_file *file, struct instruction *insn);
+struct instruction *next_insn_same_func(struct objtool_file *file, struct instruction *insn);
+
+#define func_for_each_insn(file, func, insn) \
+ for (insn = find_insn(file, func->sec, func->offset); \
+ insn; \
+ insn = next_insn_same_func(file, insn))
+
+#define sec_for_each_insn(file, _sec, insn) \
+ for (insn = find_insn(file, _sec, 0); \
+ insn && insn->sec == _sec; \
+ insn = next_insn_same_sec(file, insn))
+
+#define sym_for_each_insn(file, sym, insn) \
+ for (insn = find_insn(file, sym->sec, sym->offset); \
+ insn && insn->offset < sym->offset + sym->len; \
+ insn = next_insn_same_sec(file, insn))
+
+struct reloc *insn_reloc(struct objtool_file *file, struct instruction *insn);
+
+int decode_file(struct objtool_file *file);
+void free_insns(struct objtool_file *file);
+
+const char *objtool_disas_insn(struct instruction *insn);
+
+extern size_t sym_name_max_len;
+extern struct disas_context *objtool_disas_ctx;
+int pv_ops_idx_off(const char *symname);
+
+#endif /* _CHECK_H */
diff --git a/tools/objtool/include/objtool/checksum.h b/tools/objtool/include/objtool/checksum.h
new file mode 100644
index 000000000..d46293f54
--- /dev/null
+++ b/tools/objtool/include/objtool/checksum.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _OBJTOOL_CHECKSUM_H
+#define _OBJTOOL_CHECKSUM_H
+
+#include <objtool/elf.h>
+
+#ifdef BUILD_KLP
+
+static inline void checksum_init(struct symbol *sym)
+{
+ if (sym && !sym->csum.state) {
+ sym->csum.state = XXH3_createState();
+ XXH3_64bits_reset(sym->csum.state);
+ }
+}
+
+static inline void __checksum_update(struct symbol *sym, const void *data,
+ size_t size)
+{
+ XXH3_64bits_update(sym->csum.state, data, size);
+}
+
+static inline void __checksum_update_insn(struct symbol *sym,
+ struct instruction *insn,
+ const void *data, size_t size)
+{
+ __checksum_update(sym, data, size);
+ dbg_checksum_insn(sym, insn, XXH3_64bits_digest(sym->csum.state));
+}
+
+static inline void __checksum_update_object(struct symbol *sym,
+ unsigned long offset,
+ const char *what, const void *data,
+ size_t size)
+{
+ __checksum_update(sym, &offset, sizeof(offset));
+ __checksum_update(sym, data, size);
+ dbg_checksum_object(sym, offset, what, XXH3_64bits_digest(sym->csum.state));
+}
+
+static inline void checksum_finish(struct symbol *sym)
+{
+ if (sym && sym->csum.state) {
+ sym->csum.checksum = XXH3_64bits_digest(sym->csum.state);
+ XXH3_freeState(sym->csum.state);
+ sym->csum.state = NULL;
+ }
+}
+
+int calculate_checksums(struct objtool_file *file);
+int create_sym_checksum_section(struct objtool_file *file);
+
+#else /* !BUILD_KLP */
+
+static inline int calculate_checksums(struct objtool_file *file) { return -ENOSYS; }
+static inline int create_sym_checksum_section(struct objtool_file *file) { return -EINVAL; }
+
+#endif /* !BUILD_KLP */
+
+#endif /* _OBJTOOL_CHECKSUM_H */
diff --git a/tools/objtool/include/objtool/checksum_types.h b/tools/objtool/include/objtool/checksum_types.h
new file mode 100644
index 000000000..507efdd8a
--- /dev/null
+++ b/tools/objtool/include/objtool/checksum_types.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _OBJTOOL_CHECKSUM_TYPES_H
+#define _OBJTOOL_CHECKSUM_TYPES_H
+
+struct sym_checksum {
+ u64 addr;
+ u64 checksum;
+};
+
+#ifdef BUILD_KLP
+
+#include <xxhash.h>
+
+struct checksum {
+ XXH3_state_t *state;
+ XXH64_hash_t checksum;
+};
+
+#else /* !BUILD_KLP */
+
+struct checksum {};
+
+#endif /* !BUILD_KLP */
+
+#endif /* _OBJTOOL_CHECKSUM_TYPES_H */
diff --git a/tools/objtool/include/objtool/disas.h b/tools/objtool/include/objtool/disas.h
new file mode 100644
index 000000000..e8f395eff
--- /dev/null
+++ b/tools/objtool/include/objtool/disas.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2025, Oracle and/or its affiliates.
+ */
+
+#ifndef _DISAS_H
+#define _DISAS_H
+
+struct alternative;
+struct disas_context;
+struct disassemble_info;
+
+#ifdef DISAS
+
+struct disas_context *disas_context_create(struct objtool_file *file);
+void disas_context_destroy(struct disas_context *dctx);
+void disas_warned_funcs(struct disas_context *dctx);
+void disas_funcs(struct disas_context *dctx);
+int disas_info_init(struct disassemble_info *dinfo,
+ int arch, int mach32, int mach64,
+ const char *options);
+size_t disas_insn(struct disas_context *dctx, struct instruction *insn);
+char *disas_result(struct disas_context *dctx);
+void disas_print_info(FILE *stream, struct instruction *insn, int depth,
+ const char *format, ...);
+void disas_print_insn(FILE *stream, struct disas_context *dctx,
+ struct instruction *insn, int depth,
+ const char *format, ...);
+char *disas_alt_name(struct alternative *alt);
+const char *disas_alt_type_name(struct instruction *insn);
+
+#else /* DISAS */
+
+#include <objtool/warn.h>
+
+static inline struct disas_context *disas_context_create(struct objtool_file *file)
+{
+ WARN("Rebuild with libopcodes for disassembly support");
+ return NULL;
+}
+
+static inline void disas_context_destroy(struct disas_context *dctx) {}
+static inline void disas_warned_funcs(struct disas_context *dctx) {}
+static inline void disas_funcs(struct disas_context *dctx) {}
+
+static inline int disas_info_init(struct disassemble_info *dinfo,
+ int arch, int mach32, int mach64,
+ const char *options)
+{
+ return -1;
+}
+
+static inline size_t disas_insn(struct disas_context *dctx,
+ struct instruction *insn)
+{
+ return -1;
+}
+
+static inline char *disas_result(struct disas_context *dctx)
+{
+ return NULL;
+}
+
+static inline void disas_print_info(FILE *stream, struct instruction *insn,
+ int depth, const char *format, ...) {}
+static inline void disas_print_insn(FILE *stream, struct disas_context *dctx,
+ struct instruction *insn, int depth,
+ const char *format, ...) {}
+static inline char *disas_alt_name(struct alternative *alt)
+{
+ return NULL;
+}
+
+static inline const char *disas_alt_type_name(struct instruction *insn)
+{
+ return NULL;
+}
+
+#endif /* DISAS */
+
+#endif /* _DISAS_H */
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h
new file mode 100644
index 000000000..a82517a76
--- /dev/null
+++ b/tools/objtool/include/objtool/elf.h
@@ -0,0 +1,583 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#ifndef _OBJTOOL_ELF_H
+#define _OBJTOOL_ELF_H
+
+#include <stdio.h>
+#include <gelf.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/hashtable.h>
+#include <linux/rbtree.h>
+#include <linux/jhash.h>
+
+#include <objtool/endianness.h>
+#include <objtool/checksum_types.h>
+#include <arch/elf.h>
+
+#define SEC_NAME_LEN 1024
+#define SYM_NAME_LEN 512
+
+static inline u32 str_hash(const char *str)
+{
+ return jhash(str, strlen(str), 0);
+}
+
+u32 str_hash_demangled(const char *str);
+
+#define bswap_if_needed(elf, val) __bswap_if_needed(&elf->ehdr, val)
+
+#ifdef LIBELF_USE_DEPRECATED
+# define elf_getshdrnum elf_getshnum
+# define elf_getshdrstrndx elf_getshstrndx
+#endif
+
+/*
+ * Fallback for systems without this "read, mmaping if possible" cmd.
+ */
+#ifndef ELF_C_READ_MMAP
+#define ELF_C_READ_MMAP ELF_C_READ
+#endif
+
+struct elf_hash_node {
+ struct elf_hash_node *next;
+};
+
+struct section {
+ struct list_head list;
+ struct elf_hash_node hash;
+ struct elf_hash_node name_hash;
+ GElf_Shdr sh;
+ struct rb_root_cached symbol_tree;
+ struct list_head symbol_list;
+ struct section *base, *rsec;
+ struct symbol *sym;
+ Elf_Data *data;
+ const char *name;
+ int idx;
+ bool _changed, text, rodata, noinstr, init, truncate;
+ struct reloc *relocs;
+ unsigned long nr_alloc_relocs;
+ struct section *twin;
+};
+
+struct symbol {
+ struct list_head list;
+ struct list_head global_list;
+ struct rb_node node;
+ struct elf_hash_node hash;
+ struct elf_hash_node name_hash;
+ GElf_Sym sym;
+ struct section *sec;
+ const char *name, *demangled_name;
+ unsigned int idx, len;
+ unsigned long offset;
+ unsigned long __subtree_last;
+ struct symbol *pfunc, *cfunc, *alias, *file;
+ unsigned char bind, type;
+ u8 uaccess_safe : 1;
+ u8 static_call_tramp : 1;
+ u8 retpoline_thunk : 1;
+ u8 return_thunk : 1;
+ u8 fentry : 1;
+ u8 profiling_func : 1;
+ u8 warned : 1;
+ u8 embedded_insn : 1;
+ u8 local_label : 1;
+ u8 frame_pointer : 1;
+ u8 ignore : 1;
+ u8 nocfi : 1;
+ u8 cold : 1;
+ u8 prefix : 1;
+ u8 debug_checksum : 1;
+ u8 changed : 1;
+ u8 included : 1;
+ u8 klp : 1;
+ u8 dont_correlate : 1;
+ u8 fake : 1;
+ struct list_head pv_target;
+ struct reloc *relocs;
+ struct section *group_sec;
+ struct checksum csum;
+ struct symbol *twin, *clone;
+};
+
+struct reloc {
+ struct elf_hash_node hash;
+ struct section *sec;
+ struct symbol *sym;
+ unsigned long _sym_next_reloc;
+};
+
+struct elf {
+ Elf *elf;
+ GElf_Ehdr ehdr;
+ int fd;
+ bool changed;
+ const char *name, *tmp_name;
+ unsigned int num_files;
+ struct list_head sections;
+ struct list_head symbols;
+ unsigned long num_relocs;
+
+ int symbol_bits;
+ int symbol_name_bits;
+ int section_bits;
+ int section_name_bits;
+ int reloc_bits;
+
+ struct elf_hash_node **symbol_hash;
+ struct elf_hash_node **symbol_name_hash;
+ struct elf_hash_node **section_hash;
+ struct elf_hash_node **section_name_hash;
+ struct elf_hash_node **reloc_hash;
+
+ struct section *section_data;
+ struct symbol *symbol_data;
+};
+
+#define __elf_table(elf, name) ((elf)->name##_hash)
+#define __elf_bits(elf, name) ((elf)->name##_bits)
+
+#define __elf_table_entry(elf, name, key) \
+ __elf_table(elf, name)[hash_min(key, __elf_bits(elf, name))]
+
+#define elf_list_entry(ptr, type, member) \
+({ \
+ typeof(ptr) __ptr = (ptr); \
+ __ptr ? container_of(__ptr, type, member) : NULL; \
+})
+
+#define elf_hash_for_each_possible(elf, name, obj, member, key) \
+ for (obj = elf_list_entry(__elf_table_entry(elf, name, key), typeof(*obj), member); \
+ obj; \
+ obj = elf_list_entry(obj->member.next, typeof(*(obj)), member))
+
+struct elf *elf_open_read(const char *name, int flags);
+struct elf *elf_create_file(GElf_Ehdr *ehdr, const char *name);
+
+struct section *elf_create_section(struct elf *elf, const char *name,
+ size_t size, size_t entsize,
+ unsigned int type, unsigned int align,
+ unsigned int flags);
+struct section *elf_create_section_pair(struct elf *elf, const char *name,
+ size_t entsize, unsigned int nr,
+ unsigned int reloc_nr);
+
+struct section *elf_create_rela_section(struct elf *elf, struct section *sec,
+ unsigned int reloc_nr);
+
+struct symbol *elf_create_symbol(struct elf *elf, const char *name,
+ struct section *sec, unsigned int bind,
+ unsigned int type, unsigned long offset,
+ size_t size);
+struct symbol *elf_create_section_symbol(struct elf *elf, struct section *sec);
+
+void *elf_add_data(struct elf *elf, struct section *sec, const void *data,
+ size_t size);
+
+unsigned int elf_add_string(struct elf *elf, struct section *strtab, const char *str);
+
+struct reloc *elf_create_reloc(struct elf *elf, struct section *sec,
+ unsigned long offset, struct symbol *sym,
+ s64 addend, unsigned int type);
+
+struct reloc *elf_init_reloc(struct elf *elf, struct section *rsec,
+ unsigned int reloc_idx, unsigned long offset,
+ struct symbol *sym, s64 addend, unsigned int type);
+
+struct reloc *elf_init_reloc_text_sym(struct elf *elf, struct section *sec,
+ unsigned long offset,
+ unsigned int reloc_idx,
+ struct section *insn_sec,
+ unsigned long insn_off);
+
+struct reloc *elf_init_reloc_data_sym(struct elf *elf, struct section *sec,
+ unsigned long offset,
+ unsigned int reloc_idx,
+ struct symbol *sym,
+ s64 addend);
+
+int elf_write_symbol(struct elf *elf, struct symbol *sym);
+int elf_write_insn(struct elf *elf, struct section *sec, unsigned long offset,
+ unsigned int len, const char *insn);
+
+int elf_write(struct elf *elf);
+int elf_close(struct elf *elf);
+
+struct section *find_section_by_name(const struct elf *elf, const char *name);
+struct symbol *find_func_by_offset(struct section *sec, unsigned long offset);
+struct symbol *find_symbol_by_offset(struct section *sec, unsigned long offset);
+struct symbol *find_symbol_by_name(const struct elf *elf, const char *name);
+struct symbol *find_global_symbol_by_name(const struct elf *elf, const char *name);
+struct symbol *find_symbol_containing(const struct section *sec, unsigned long offset);
+struct symbol *find_symbol_containing_inclusive(const struct section *sec, unsigned long offset);
+int find_symbol_hole_containing(const struct section *sec, unsigned long offset);
+struct reloc *find_reloc_by_dest(const struct elf *elf, struct section *sec, unsigned long offset);
+struct reloc *find_reloc_by_dest_range(const struct elf *elf, struct section *sec,
+ unsigned long offset, unsigned int len);
+struct symbol *find_func_containing(struct section *sec, unsigned long offset);
+
+/*
+ * Try to see if it's a whole archive (vmlinux.o or module).
+ *
+ * Note this will miss the case where a module only has one source file.
+ */
+static inline bool has_multiple_files(struct elf *elf)
+{
+ return elf->num_files > 1;
+}
+
+static inline size_t elf_addr_size(struct elf *elf)
+{
+ return elf->ehdr.e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;
+}
+
+static inline size_t elf_rela_size(struct elf *elf)
+{
+ return elf_addr_size(elf) == 4 ? sizeof(Elf32_Rela) : sizeof(Elf64_Rela);
+}
+
+static inline unsigned int elf_data_rela_type(struct elf *elf)
+{
+ return elf_addr_size(elf) == 4 ? R_DATA32 : R_DATA64;
+}
+
+static inline unsigned int elf_text_rela_type(struct elf *elf)
+{
+ return elf_addr_size(elf) == 4 ? R_TEXT32 : R_TEXT64;
+}
+
+static inline bool is_undef_sym(struct symbol *sym)
+{
+ return !sym->sec->idx;
+}
+
+static inline bool is_null_sym(struct symbol *sym)
+{
+ return !sym->idx;
+}
+
+static inline bool is_sec_sym(struct symbol *sym)
+{
+ return sym->type == STT_SECTION;
+}
+
+static inline bool is_object_sym(struct symbol *sym)
+{
+ return sym->type == STT_OBJECT;
+}
+
+static inline bool is_func_sym(struct symbol *sym)
+{
+ return sym->type == STT_FUNC;
+}
+
+static inline bool is_file_sym(struct symbol *sym)
+{
+ return sym->type == STT_FILE;
+}
+
+static inline bool is_notype_sym(struct symbol *sym)
+{
+ return sym->type == STT_NOTYPE;
+}
+
+static inline bool is_global_sym(struct symbol *sym)
+{
+ return sym->bind == STB_GLOBAL;
+}
+
+static inline bool is_weak_sym(struct symbol *sym)
+{
+ return sym->bind == STB_WEAK;
+}
+
+static inline bool is_local_sym(struct symbol *sym)
+{
+ return sym->bind == STB_LOCAL;
+}
+
+static inline bool is_alias_sym(struct symbol *sym)
+{
+ return sym->alias != sym;
+}
+
+static inline bool is_prefix_func(struct symbol *sym)
+{
+ return sym->prefix;
+}
+
+static inline bool is_cold_func(struct symbol *sym)
+{
+ return sym->cold;
+}
+
+static inline bool is_reloc_sec(struct section *sec)
+{
+ return sec->sh.sh_type == SHT_RELA || sec->sh.sh_type == SHT_REL;
+}
+
+static inline bool is_string_sec(struct section *sec)
+{
+ return sec->sh.sh_flags & SHF_STRINGS;
+}
+
+static inline bool is_text_sec(struct section *sec)
+{
+ return sec->sh.sh_flags & SHF_EXECINSTR;
+}
+
+static inline bool is_rodata_sec(struct section *sec)
+{
+ return sec->rodata;
+}
+
+static inline bool sec_changed(struct section *sec)
+{
+ return sec->_changed;
+}
+
+static inline void mark_sec_changed(struct elf *elf, struct section *sec,
+ bool changed)
+{
+ sec->_changed = changed;
+ elf->changed |= changed;
+}
+
+static inline unsigned int sec_num_entries(struct section *sec)
+{
+ return sec->sh.sh_size / sec->sh.sh_entsize;
+}
+
+static inline unsigned int reloc_idx(struct reloc *reloc)
+{
+ return reloc - reloc->sec->relocs;
+}
+
+static inline void *reloc_rel(struct reloc *reloc)
+{
+ struct section *rsec = reloc->sec;
+
+ return rsec->data->d_buf + (reloc_idx(reloc) * rsec->sh.sh_entsize);
+}
+
+static inline bool is_32bit_reloc(struct reloc *reloc)
+{
+ /*
+ * Elf32_Rel: 8 bytes
+ * Elf32_Rela: 12 bytes
+ * Elf64_Rel: 16 bytes
+ * Elf64_Rela: 24 bytes
+ */
+ return reloc->sec->sh.sh_entsize < 16;
+}
+
+static inline unsigned long sec_size(struct section *sec)
+{
+ return sec->sh.sh_size;
+}
+
+#define __get_reloc_field(reloc, field) \
+({ \
+ is_32bit_reloc(reloc) ? \
+ ((Elf32_Rela *)reloc_rel(reloc))->field : \
+ ((Elf64_Rela *)reloc_rel(reloc))->field; \
+})
+
+#define __set_reloc_field(reloc, field, val) \
+({ \
+ if (is_32bit_reloc(reloc)) \
+ ((Elf32_Rela *)reloc_rel(reloc))->field = val; \
+ else \
+ ((Elf64_Rela *)reloc_rel(reloc))->field = val; \
+})
+
+static inline u64 reloc_offset(struct reloc *reloc)
+{
+ return __get_reloc_field(reloc, r_offset);
+}
+
+static inline void set_reloc_offset(struct elf *elf, struct reloc *reloc, u64 offset)
+{
+ __set_reloc_field(reloc, r_offset, offset);
+ mark_sec_changed(elf, reloc->sec, true);
+}
+
+static inline s64 reloc_addend(struct reloc *reloc)
+{
+ return __get_reloc_field(reloc, r_addend);
+}
+
+static inline void set_reloc_addend(struct elf *elf, struct reloc *reloc, s64 addend)
+{
+ __set_reloc_field(reloc, r_addend, addend);
+ mark_sec_changed(elf, reloc->sec, true);
+}
+
+
+static inline unsigned int reloc_sym(struct reloc *reloc)
+{
+ u64 info = __get_reloc_field(reloc, r_info);
+
+ return is_32bit_reloc(reloc) ?
+ ELF32_R_SYM(info) :
+ ELF64_R_SYM(info);
+}
+
+static inline unsigned int reloc_type(struct reloc *reloc)
+{
+ u64 info = __get_reloc_field(reloc, r_info);
+
+ return is_32bit_reloc(reloc) ?
+ ELF32_R_TYPE(info) :
+ ELF64_R_TYPE(info);
+}
+
+static inline void set_reloc_sym(struct elf *elf, struct reloc *reloc, unsigned int sym)
+{
+ u64 info = is_32bit_reloc(reloc) ?
+ ELF32_R_INFO(sym, reloc_type(reloc)) :
+ ELF64_R_INFO(sym, reloc_type(reloc));
+
+ __set_reloc_field(reloc, r_info, info);
+
+ mark_sec_changed(elf, reloc->sec, true);
+}
+static inline void set_reloc_type(struct elf *elf, struct reloc *reloc, unsigned int type)
+{
+ u64 info = is_32bit_reloc(reloc) ?
+ ELF32_R_INFO(reloc_sym(reloc), type) :
+ ELF64_R_INFO(reloc_sym(reloc), type);
+
+ __set_reloc_field(reloc, r_info, info);
+
+ mark_sec_changed(elf, reloc->sec, true);
+}
+
+static inline unsigned int annotype(struct elf *elf, struct section *sec,
+ struct reloc *reloc)
+{
+ unsigned int type;
+
+ type = *(u32 *)(sec->data->d_buf + (reloc_idx(reloc) * 8) + 4);
+ return bswap_if_needed(elf, type);
+}
+
+#define RELOC_JUMP_TABLE_BIT 1UL
+
+/* Does reloc mark the beginning of a jump table? */
+static inline bool is_jump_table(struct reloc *reloc)
+{
+ return reloc->_sym_next_reloc & RELOC_JUMP_TABLE_BIT;
+}
+
+static inline void set_jump_table(struct reloc *reloc)
+{
+ reloc->_sym_next_reloc |= RELOC_JUMP_TABLE_BIT;
+}
+
+static inline struct reloc *sym_next_reloc(struct reloc *reloc)
+{
+ return (struct reloc *)(reloc->_sym_next_reloc & ~RELOC_JUMP_TABLE_BIT);
+}
+
+static inline void set_sym_next_reloc(struct reloc *reloc, struct reloc *next)
+{
+ unsigned long bit = reloc->_sym_next_reloc & RELOC_JUMP_TABLE_BIT;
+
+ reloc->_sym_next_reloc = (unsigned long)next | bit;
+}
+
+#define for_each_sec(elf, sec) \
+ list_for_each_entry(sec, &elf->sections, list)
+
+#define sec_for_each_sym(sec, sym) \
+ list_for_each_entry(sym, &sec->symbol_list, list)
+
+#define sec_prev_sym(sym) \
+ sym->sec && sym->list.prev != &sym->sec->symbol_list ? \
+ list_prev_entry(sym, list) : NULL
+
+#define for_each_sym(elf, sym) \
+ list_for_each_entry(sym, &elf->symbols, global_list)
+
+#define for_each_sym_continue(elf, sym) \
+ list_for_each_entry_continue(sym, &elf->symbols, global_list)
+
+#define for_each_sym_by_name(elf, _name, sym) \
+ elf_hash_for_each_possible(elf, symbol_name, sym, name_hash, \
+ str_hash_demangled(_name)) \
+ if (strcmp(sym->name, _name)) {} else
+
+#define for_each_sym_by_demangled_name(elf, name, sym) \
+ elf_hash_for_each_possible(elf, symbol_name, sym, name_hash, \
+ str_hash(name)) \
+ if (strcmp(sym->demangled_name, name)) {} else
+
+#define rsec_next_reloc(rsec, reloc) \
+ reloc_idx(reloc) < sec_num_entries(rsec) - 1 ? reloc + 1 : NULL
+
+#define for_each_reloc(rsec, reloc) \
+ for (reloc = rsec->relocs; reloc; reloc = rsec_next_reloc(rsec, reloc))
+
+#define for_each_reloc_from(rsec, reloc) \
+ for (; reloc; reloc = rsec_next_reloc(rsec, reloc))
+
+#define for_each_reloc_continue(rsec, reloc) \
+ for (reloc = rsec_next_reloc(rsec, reloc); reloc; \
+ reloc = rsec_next_reloc(rsec, reloc))
+
+#define sym_for_each_reloc(elf, sym, reloc) \
+ for (reloc = find_reloc_by_dest_range(elf, sym->sec, \
+ sym->offset, sym->len); \
+ reloc && reloc_offset(reloc) < sym->offset + sym->len; \
+ reloc = rsec_next_reloc(sym->sec->rsec, reloc))
+
+static inline struct symbol *get_func_prefix(struct symbol *func)
+{
+ struct symbol *prev;
+
+ if (!is_func_sym(func) || !func->offset)
+ return NULL;
+
+ prev = find_func_containing(func->sec, func->offset - 1);
+ if (prev && is_prefix_func(prev))
+ return prev;
+
+ return NULL;
+}
+
+#define OFFSET_STRIDE_BITS 4
+#define OFFSET_STRIDE (1UL << OFFSET_STRIDE_BITS)
+#define OFFSET_STRIDE_MASK (~(OFFSET_STRIDE - 1))
+
+#define for_offset_range(_offset, _start, _end) \
+ for (_offset = ((_start) & OFFSET_STRIDE_MASK); \
+ _offset >= ((_start) & OFFSET_STRIDE_MASK) && \
+ _offset <= ((_end) & OFFSET_STRIDE_MASK); \
+ _offset += OFFSET_STRIDE)
+
+static inline u32 sec_offset_hash(struct section *sec, unsigned long offset)
+{
+ u32 ol, oh, idx = sec->idx;
+
+ offset &= OFFSET_STRIDE_MASK;
+
+ ol = offset;
+ oh = (offset >> 16) >> 16;
+
+ __jhash_mix(ol, oh, idx);
+
+ return ol;
+}
+
+static inline u32 reloc_hash(struct reloc *reloc)
+{
+ return sec_offset_hash(reloc->sec, reloc_offset(reloc));
+}
+
+#endif /* _OBJTOOL_ELF_H */
diff --git a/tools/objtool/include/objtool/endianness.h b/tools/objtool/include/objtool/endianness.h
new file mode 100644
index 000000000..aebcd2338
--- /dev/null
+++ b/tools/objtool/include/objtool/endianness.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _OBJTOOL_ENDIANNESS_H
+#define _OBJTOOL_ENDIANNESS_H
+
+#include <linux/kernel.h>
+#include <endian.h>
+
+/*
+ * Does a byte swap if target file endianness doesn't match the host, i.e. cross
+ * compilation for little endian on big endian and vice versa.
+ * To be used for multi-byte values conversion, which are read from / about
+ * to be written to a target native endianness ELF file.
+ */
+static inline bool need_bswap(GElf_Ehdr *ehdr)
+{
+ return (__BYTE_ORDER == __LITTLE_ENDIAN) ^
+ (ehdr->e_ident[EI_DATA] == ELFDATA2LSB);
+}
+
+#define __bswap_if_needed(ehdr, val) \
+({ \
+ __typeof__(val) __ret; \
+ bool __need_bswap = need_bswap(ehdr); \
+ switch (sizeof(val)) { \
+ case 8: \
+ __ret = __need_bswap ? bswap_64(val) : (val); break; \
+ case 4: \
+ __ret = __need_bswap ? bswap_32(val) : (val); break; \
+ case 2: \
+ __ret = __need_bswap ? bswap_16(val) : (val); break; \
+ default: \
+ BUILD_BUG(); break; \
+ } \
+ __ret; \
+})
+
+#endif /* _OBJTOOL_ENDIANNESS_H */
diff --git a/tools/objtool/include/objtool/klp.h b/tools/objtool/include/objtool/klp.h
new file mode 100644
index 000000000..c57775d78
--- /dev/null
+++ b/tools/objtool/include/objtool/klp.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _OBJTOOL_KLP_H
+#define _OBJTOOL_KLP_H
+
+#define SHF_RELA_LIVEPATCH 0x00100000
+#define SHN_LIVEPATCH 0xff20
+
+/*
+ * .init.klp_objects and .init.klp_funcs are created by klp diff and used by the
+ * patch module init code to build the klp_patch, klp_object and klp_func
+ * structs needed by the livepatch API.
+ */
+#define KLP_OBJECTS_SEC ".init.klp_objects"
+#define KLP_FUNCS_SEC ".init.klp_funcs"
+
+/*
+ * __klp_relocs.<objname> are intermediate sections which are created by klp
+ * diff and converted into KLP symbols/relas by "objtool klp post-link". This
+ * is needed to work around the linker, which doesn't preserve SHN_LIVEPATCH or
+ * SHF_RELA_LIVEPATCH, nor does it support having two RELA sections for a
+ * single PROGBITS section.
+ *
+ * "objname" is the object whose loading gates the relocation: "vmlinux" for
+ * references to vmlinux symbols, otherwise the name of the module being
+ * patched. post-link uses it to name the resulting
+ * .klp.rela.objname.section_name sections.
+ */
+#define KLP_RELOCS_SEC "__klp_relocs"
+#define KLP_STRINGS_SEC ".rodata.klp.str1.1"
+
+#define KLP_TOMBSTONE_PREFIX ".klp.tombstone."
+
+struct klp_reloc {
+ void *offset;
+ void *sym;
+ u32 type;
+};
+
+/*
+ * .klp.symid is used to correlate symbols between vmlinux.o and vmlinux, for
+ * calculating sympos to disambiguate duplicately-named symbols.
+ */
+#define KLP_SYMID_SEC ".klp.symid"
+
+struct klp_symid {
+ u64 id;
+ u64 addr;
+};
+
+struct objtool_file;
+struct elf;
+struct symbol;
+
+int klp_create_symid_sections(struct objtool_file *file);
+
+int klp_sympos_init(struct elf *orig);
+unsigned long klp_find_sympos(struct elf *elf, struct symbol *sym);
+
+int cmd_klp_checksum(int argc, const char **argv);
+int cmd_klp_diff(int argc, const char **argv);
+int cmd_klp_post_link(int argc, const char **argv);
+
+#endif /* _OBJTOOL_KLP_H */
diff --git a/tools/objtool/include/objtool/objtool.h b/tools/objtool/include/objtool/objtool.h
new file mode 100644
index 000000000..6dc12a59a
--- /dev/null
+++ b/tools/objtool/include/objtool/objtool.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020 Matt Helsley <mhelsley@vmware.com>
+ */
+
+#ifndef _OBJTOOL_H
+#define _OBJTOOL_H
+
+#include <stdbool.h>
+#include <linux/list.h>
+#include <linux/hashtable.h>
+
+#include <objtool/elf.h>
+
+#define __weak __attribute__((weak))
+
+struct pv_state {
+ bool clean;
+ struct list_head targets;
+};
+
+struct objtool_file {
+ struct elf *elf;
+ DECLARE_HASHTABLE(insn_hash, 20);
+ struct list_head retpoline_call_list;
+ struct list_head return_thunk_list;
+ struct list_head static_call_list;
+ struct list_head mcount_loc_list;
+ struct list_head endbr_list;
+ struct list_head call_list;
+ bool ignore_unreachables, hints, rodata, klp;
+
+ unsigned int nr_endbr;
+ unsigned int nr_endbr_int;
+
+ unsigned long jl_short, jl_long;
+ unsigned long jl_nop_short, jl_nop_long;
+
+ struct pv_state *pv_ops;
+};
+
+char *top_level_dir(const char *file);
+
+int init_signal_handler(void);
+
+struct objtool_file *objtool_open_read(const char *_objname);
+
+int objtool_pv_add(struct objtool_file *file, int idx, struct symbol *func);
+
+int check(struct objtool_file *file);
+int orc_dump(const char *objname);
+int orc_create(struct objtool_file *file);
+
+#endif /* _OBJTOOL_H */
diff --git a/tools/objtool/include/objtool/orc.h b/tools/objtool/include/objtool/orc.h
new file mode 100644
index 000000000..15a32def1
--- /dev/null
+++ b/tools/objtool/include/objtool/orc.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _OBJTOOL_ORC_H
+#define _OBJTOOL_ORC_H
+
+#include <objtool/check.h>
+
+int init_orc_entry(struct orc_entry *orc, struct cfi_state *cfi, struct instruction *insn);
+void orc_print_dump(struct elf *dummy_elf, struct orc_entry *orc, int i);
+int write_orc_entry(struct elf *elf, struct section *orc_sec,
+ struct section *ip_sec, unsigned int idx,
+ struct section *insn_sec, unsigned long insn_off,
+ struct orc_entry *o);
+
+#endif /* _OBJTOOL_ORC_H */
diff --git a/tools/objtool/include/objtool/special.h b/tools/objtool/include/objtool/special.h
new file mode 100644
index 000000000..620dbf6cb
--- /dev/null
+++ b/tools/objtool/include/objtool/special.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#ifndef _SPECIAL_H
+#define _SPECIAL_H
+
+#include <stdbool.h>
+#include <objtool/check.h>
+#include <objtool/elf.h>
+
+#define C_JUMP_TABLE_SECTION ".data.rel.ro.c_jump_table"
+
+struct special_alt {
+ struct list_head list;
+
+ bool group;
+ bool jump_or_nop;
+ u8 key_addend;
+
+ struct section *orig_sec;
+ unsigned long orig_off;
+
+ struct section *new_sec;
+ unsigned long new_off;
+
+ unsigned int orig_len, new_len, feature; /* group only */
+};
+
+int special_get_alts(struct elf *elf, struct list_head *alts);
+
+void arch_handle_alternative(struct special_alt *alt);
+
+/*
+ * Should the reloc at @offset -- the "new" (replacement) field of a special
+ * section group entry -- be ignored? The meaning of a zero-length replacement
+ * is arch specific, so the arch decides.
+ */
+bool arch_alt_ignore_new_reloc(struct section *sec, unsigned long offset);
+
+bool arch_support_alt_relocation(struct special_alt *special_alt,
+ struct instruction *insn,
+ struct reloc *reloc);
+struct reloc *arch_find_switch_table(struct objtool_file *file,
+ struct instruction *insn,
+ unsigned long *table_size);
+const char *arch_cpu_feature_name(int feature_number);
+
+#endif /* _SPECIAL_H */
diff --git a/tools/objtool/include/objtool/trace.h b/tools/objtool/include/objtool/trace.h
new file mode 100644
index 000000000..70b574366
--- /dev/null
+++ b/tools/objtool/include/objtool/trace.h
@@ -0,0 +1,141 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2025, Oracle and/or its affiliates.
+ */
+
+#ifndef _TRACE_H
+#define _TRACE_H
+
+#include <objtool/check.h>
+#include <objtool/disas.h>
+
+#ifdef DISAS
+
+extern bool trace;
+extern int trace_depth;
+
+#define TRACE(fmt, ...) \
+({ if (trace) \
+ fprintf(stderr, fmt, ##__VA_ARGS__); \
+})
+
+/*
+ * Print the instruction address and a message. The instruction
+ * itself is not printed.
+ */
+#define TRACE_ADDR(insn, fmt, ...) \
+({ \
+ if (trace) { \
+ disas_print_info(stderr, insn, trace_depth - 1, \
+ fmt "\n", ##__VA_ARGS__); \
+ } \
+})
+
+/*
+ * Print the instruction address, the instruction and a message.
+ */
+#define TRACE_INSN(insn, fmt, ...) \
+({ \
+ if (trace) { \
+ disas_print_insn(stderr, objtool_disas_ctx, \
+ insn, trace_depth - 1, \
+ fmt, ##__VA_ARGS__); \
+ fprintf(stderr, "\n"); \
+ insn->trace = 1; \
+ } \
+})
+
+#define TRACE_INSN_STATE(insn, sprev, snext) \
+({ \
+ if (trace) \
+ trace_insn_state(insn, sprev, snext); \
+})
+
+#define TRACE_ALT_FMT(pfx, fmt) pfx "<%s.%lx> " fmt
+#define TRACE_ALT_ARG(insn) disas_alt_type_name(insn), (insn)->offset
+
+#define TRACE_ALT(insn, fmt, ...) \
+ TRACE_INSN(insn, TRACE_ALT_FMT("", fmt), \
+ TRACE_ALT_ARG(insn), ##__VA_ARGS__)
+
+#define TRACE_ALT_INFO(insn, pfx, fmt, ...) \
+ TRACE_ADDR(insn, TRACE_ALT_FMT(pfx, fmt), \
+ TRACE_ALT_ARG(insn), ##__VA_ARGS__)
+
+#define TRACE_ALT_INFO_NOADDR(insn, pfx, fmt, ...) \
+ TRACE_ADDR(NULL, TRACE_ALT_FMT(pfx, fmt), \
+ TRACE_ALT_ARG(insn), ##__VA_ARGS__)
+
+#define TRACE_ALT_BEGIN(insn, alt, alt_name) \
+({ \
+ if (trace) { \
+ alt_name = disas_alt_name(alt); \
+ trace_alt_begin(insn, alt, alt_name); \
+ } \
+})
+
+#define TRACE_ALT_END(insn, alt, alt_name) \
+({ \
+ if (trace) { \
+ trace_alt_end(insn, alt, alt_name); \
+ free(alt_name); \
+ } \
+})
+
+static inline void trace_enable(void)
+{
+ trace = true;
+ trace_depth = 0;
+}
+
+static inline void trace_disable(void)
+{
+ trace = false;
+}
+
+static inline void trace_depth_inc(void)
+{
+ if (trace)
+ trace_depth++;
+}
+
+static inline void trace_depth_dec(void)
+{
+ if (trace)
+ trace_depth--;
+}
+
+void trace_insn_state(struct instruction *insn, struct insn_state *sprev,
+ struct insn_state *snext);
+void trace_alt_begin(struct instruction *orig_insn, struct alternative *alt,
+ char *alt_name);
+void trace_alt_end(struct instruction *orig_insn, struct alternative *alt,
+ char *alt_name);
+
+#else /* DISAS */
+
+#define TRACE(fmt, ...) ({})
+#define TRACE_ADDR(insn, fmt, ...) ({})
+#define TRACE_INSN(insn, fmt, ...) ({})
+#define TRACE_INSN_STATE(insn, sprev, snext) ({})
+#define TRACE_ALT(insn, fmt, ...) ({})
+#define TRACE_ALT_INFO(insn, fmt, ...) ({})
+#define TRACE_ALT_INFO_NOADDR(insn, fmt, ...) ({})
+#define TRACE_ALT_BEGIN(insn, alt, alt_name) ({})
+#define TRACE_ALT_END(insn, alt, alt_name) ({})
+
+
+static inline void trace_enable(void) {}
+static inline void trace_disable(void) {}
+static inline void trace_depth_inc(void) {}
+static inline void trace_depth_dec(void) {}
+static inline void trace_alt_begin(struct instruction *orig_insn,
+ struct alternative *alt,
+ char *alt_name) {};
+static inline void trace_alt_end(struct instruction *orig_insn,
+ struct alternative *alt,
+ char *alt_name) {};
+
+#endif
+
+#endif /* _TRACE_H */
diff --git a/tools/objtool/include/objtool/util.h b/tools/objtool/include/objtool/util.h
new file mode 100644
index 000000000..a0180b312
--- /dev/null
+++ b/tools/objtool/include/objtool/util.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _UTIL_H
+#define _UTIL_H
+
+#include <objtool/warn.h>
+
+#define snprintf_check(str, size, format, args...) \
+({ \
+ int __ret = snprintf(str, size, format, args); \
+ if (__ret < 0) \
+ ERROR_GLIBC("snprintf"); \
+ else if (__ret >= size) \
+ ERROR("snprintf() failed for '" format "'", args); \
+ else \
+ __ret = 0; \
+ __ret; \
+})
+
+#endif /* _UTIL_H */
diff --git a/tools/objtool/include/objtool/warn.h b/tools/objtool/include/objtool/warn.h
new file mode 100644
index 000000000..870e147f3
--- /dev/null
+++ b/tools/objtool/include/objtool/warn.h
@@ -0,0 +1,168 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#ifndef _WARN_H
+#define _WARN_H
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <objtool/builtin.h>
+#include <objtool/elf.h>
+
+extern const char *objname;
+
+static inline char *offstr(struct section *sec, unsigned long offset)
+{
+ bool is_text = (sec->sh.sh_flags & SHF_EXECINSTR);
+ struct symbol *sym = NULL;
+ char *str;
+ int len;
+
+ if (is_text)
+ sym = find_func_containing(sec, offset);
+ if (!sym)
+ sym = find_symbol_containing(sec, offset);
+
+ if (sym) {
+ str = malloc(strlen(sym->name) + strlen(sec->name) + 40);
+ len = sprintf(str, "%s+0x%lx", sym->name, offset - sym->offset);
+ if (opts.sec_address)
+ sprintf(str+len, " (%s+0x%lx)", sec->name, offset);
+ } else {
+ str = malloc(strlen(sec->name) + 20);
+ sprintf(str, "%s+0x%lx", sec->name, offset);
+ }
+
+ return str;
+}
+
+#define ___WARN(severity, extra, format, ...) \
+ fprintf(stderr, \
+ "%s%s%s: objtool" extra ": " format "\n", \
+ objname ?: "", \
+ objname ? ": " : "", \
+ severity, \
+ ##__VA_ARGS__)
+
+#define __WARN(severity, format, ...) \
+ ___WARN(severity, "", format, ##__VA_ARGS__)
+
+#define __WARN_LINE(severity, format, ...) \
+ ___WARN(severity, " [%s:%d]", format, __FILE__, __LINE__, ##__VA_ARGS__)
+
+#define __WARN_ELF(severity, format, ...) \
+ __WARN_LINE(severity, "%s: " format " failed: %s", __func__, ##__VA_ARGS__, elf_errmsg(-1))
+
+#define __WARN_GLIBC(severity, format, ...) \
+ __WARN_LINE(severity, "%s: " format " failed: %s", __func__, ##__VA_ARGS__, strerror(errno))
+
+#define __WARN_FUNC(severity, sec, offset, format, ...) \
+({ \
+ char *_str = offstr(sec, offset); \
+ __WARN(severity, "%s: " format, _str, ##__VA_ARGS__); \
+ free(_str); \
+})
+
+#define WARN_STR (opts.werror ? "error" : "warning")
+
+#define WARN(format, ...) __WARN(WARN_STR, format, ##__VA_ARGS__)
+#define WARN_FUNC(sec, offset, format, ...) __WARN_FUNC(WARN_STR, sec, offset, format, ##__VA_ARGS__)
+
+#define WARN_INSN(insn, format, ...) \
+({ \
+ struct instruction *_insn = (insn); \
+ if (!insn_sym(_insn) || !insn_sym(_insn)->warned) { \
+ WARN_FUNC(_insn->sec, _insn->offset, format, \
+ ##__VA_ARGS__); \
+ BT_INSN(_insn, ""); \
+ } \
+ if (insn_sym(_insn)) \
+ insn_sym(_insn)->warned = 1; \
+})
+
+#define BT_INSN(insn, format, ...) \
+({ \
+ if (opts.verbose || opts.backtrace) { \
+ struct instruction *__insn = (insn); \
+ char *_str = offstr(__insn->sec, __insn->offset); \
+ const char *_istr = objtool_disas_insn(__insn); \
+ int _len; \
+ _len = snprintf(NULL, 0, " %s: " format, _str, ##__VA_ARGS__); \
+ _len = (_len < 50) ? 50 - _len : 0; \
+ WARN(" %s: " format " %*s%s", _str, ##__VA_ARGS__, _len, "", _istr); \
+ free(_str); \
+ __insn->trace = 1; \
+ } \
+})
+
+#define ERROR_STR "error"
+
+#define ERROR(format, ...) __WARN(ERROR_STR, format, ##__VA_ARGS__)
+#define ERROR_ELF(format, ...) __WARN_ELF(ERROR_STR, format, ##__VA_ARGS__)
+#define ERROR_GLIBC(format, ...) __WARN_GLIBC(ERROR_STR, format, ##__VA_ARGS__)
+#define ERROR_FUNC(sec, offset, format, ...) __WARN_FUNC(ERROR_STR, sec, offset, format, ##__VA_ARGS__)
+#define ERROR_INSN(insn, format, ...) ERROR_FUNC(insn->sec, insn->offset, format, ##__VA_ARGS__)
+
+extern bool debug, debug_correlate, debug_clone;
+extern int indent;
+
+static inline void unindent(int *unused) { indent--; }
+
+/*
+ * Clang prior to 17 is being silly and considers many __cleanup() variables
+ * as unused (because they are, their sole purpose is to go out of scope).
+ *
+ * https://github.com/llvm/llvm-project/commit/877210faa447f4cc7db87812f8ed80e398fedd61
+ */
+#undef __cleanup
+#define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
+
+#define __dbg(format, ...) \
+ fprintf(stderr, \
+ "DEBUG: %s%s" format "\n", \
+ objname ?: "", \
+ objname ? ": " : "", \
+ ##__VA_ARGS__)
+
+#define dbg_checksum_insn(func, insn, checksum) \
+({ \
+ if (unlikely(func->debug_checksum)) { \
+ char *insn_off = offstr(insn->sec, insn->offset); \
+ __dbg("checksum: %s(): %s %016llx", \
+ func->name, insn_off, (unsigned long long)checksum);\
+ free(insn_off); \
+ } \
+})
+
+#define dbg_checksum_object(sym, offset, what, checksum) \
+({ \
+ if (unlikely(sym->debug_checksum)) \
+ __dbg("checksum: %s+0x%lx: %s %016llx", \
+ sym->name, offset, what, \
+ (unsigned long long)checksum); \
+})
+
+#define dbg_correlate(args...) \
+({ \
+ if (unlikely(debug_correlate)) \
+ __dbg(args); \
+})
+
+#define __dbg_clone(format, ...) \
+({ \
+ if (unlikely(debug_clone)) \
+ __dbg("%*s" format, indent * 8, "", ##__VA_ARGS__); \
+})
+
+#define dbg_clone(args...) \
+ int __cleanup(unindent) __dummy_##__COUNTER__; \
+ __dbg_clone(args); \
+ indent++
+
+#endif /* _WARN_H */
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-10 12:11:10 +0000