1 files changed, 198 insertions, 175 deletions

diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 5f720dc076da..3fb5d146d9b1 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -1,127 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __PERF_SYMBOL
 #define __PERF_SYMBOL 1
 
 #include <linux/types.h>
+#include <linux/refcount.h>
 #include <stdbool.h>
 #include <stdint.h>
-#include "map.h"
-#include "../perf.h"
 #include <linux/list.h>
 #include <linux/rbtree.h>
 #include <stdio.h>
-#include <byteswap.h>
-#include <libgen.h>
-#include "build-id.h"
+#include "addr_location.h"
+#include "path.h"
+#include "symbol_conf.h"
+#include "spark.h"
 
-#ifdef LIBELF_SUPPORT
+#ifdef HAVE_LIBELF_SUPPORT
 #include <libelf.h>
 #include <gelf.h>
 #endif
 #include <elf.h>
 
-#include "dso.h"
-
-#ifdef HAVE_CPLUS_DEMANGLE
-extern char *cplus_demangle(const char *, int);
-
-static inline char *bfd_demangle(void __maybe_unused *v, const char *c, int i)
-{
-	return cplus_demangle(c, i);
-}
-#else
-#ifdef NO_DEMANGLE
-static inline char *bfd_demangle(void __maybe_unused *v,
-				 const char __maybe_unused *c,
-				 int __maybe_unused i)
-{
-	return NULL;
-}
-#else
-#define PACKAGE 'perf'
-#include <bfd.h>
-#endif
-#endif
+struct dso;
+struct map;
+struct maps;
+struct option;
+struct build_id;
 
 /*
  * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
  * for newer versions we can use mmap to reduce memory usage:
  */
-#ifdef LIBELF_MMAP
+#ifdef ELF_C_READ_MMAP
 # define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
 #else
 # define PERF_ELF_C_READ_MMAP ELF_C_READ
 #endif
 
-#ifndef DMGL_PARAMS
-#define DMGL_PARAMS      (1 << 0)       /* Include function args */
-#define DMGL_ANSI        (1 << 1)       /* Include const, volatile, etc */
+#ifdef HAVE_LIBELF_SUPPORT
+Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
+			     GElf_Shdr *shp, const char *name, size_t *idx);
 #endif
 
-/** struct symbol - symtab entry
- *
- * @ignore - resolvable but tools ignore it (e.g. idle routines)
+/**
+ * A symtab entry. When allocated this may be preceded by an annotation (see
+ * symbol__annotation) and/or a browser_index (see symbol__browser_index).
  */
 struct symbol {
 	struct rb_node	rb_node;
+	/** Range of symbol [start, end). */
 	u64		start;
 	u64		end;
+	/** Length of the string name. */
 	u16		namelen;
-	u8		binding;
-	bool		ignore;
-	char		name[0];
+	/** ELF symbol type as defined for st_info. E.g STT_OBJECT or STT_FUNC. */
+	u8		type:4;
+	/** ELF binding type as defined for st_info. E.g. STB_WEAK or STB_GLOBAL. */
+	u8		binding:4;
+	/** Set true for kernel symbols of idle routines. */
+	u8		idle:1;
+	/** Resolvable but tools ignore it (e.g. idle routines). */
+	u8		ignore:1;
+	/** Symbol for an inlined function. */
+	u8		inlined:1;
+	/** Has symbol__annotate2 been performed. */
+	u8		annotate2:1;
+	/** Symbol is an alias of an STT_GNU_IFUNC */
+	u8		ifunc_alias:1;
+	/** Architecture specific. Unused except on PPC where it holds st_other. */
+	u8		arch_sym;
+	/** The name of length namelen associated with the symbol. */
+	char		name[];
 };
 
 void symbol__delete(struct symbol *sym);
-void symbols__delete(struct rb_root *symbols);
+void symbols__delete(struct rb_root_cached *symbols);
+
+/* symbols__for_each_entry - iterate over symbols (rb_root)
+ *
+ * @symbols: the rb_root of symbols
+ * @pos: the 'struct symbol *' to use as a loop cursor
+ * @nd: the 'struct rb_node *' to use as a temporary storage
+ */
+#define symbols__for_each_entry(symbols, pos, nd)			\
+	for (nd = rb_first_cached(symbols);					\
+	     nd && (pos = rb_entry(nd, struct symbol, rb_node));	\
+	     nd = rb_next(nd))
 
 static inline size_t symbol__size(const struct symbol *sym)
 {
-	return sym->end - sym->start + 1;
+	return sym->end - sym->start;
 }
 
 struct strlist;
+struct intlist;
 
-struct symbol_conf {
-	unsigned short	priv_size;
-	unsigned short	nr_events;
-	bool		try_vmlinux_path,
-			show_kernel_path,
-			use_modules,
-			sort_by_name,
-			show_nr_samples,
-			show_total_period,
-			use_callchain,
-			exclude_other,
-			show_cpu_utilization,
-			initialized,
-			kptr_restrict,
-			annotate_asm_raw,
-			annotate_src,
-			event_group,
-			demangle;
-	const char	*vmlinux_name,
-			*kallsyms_name,
-			*source_prefix,
-			*field_sep;
-	const char	*default_guest_vmlinux_name,
-			*default_guest_kallsyms,
-			*default_guest_modules;
-	const char	*guestmount;
-	const char	*dso_list_str,
-			*comm_list_str,
-			*sym_list_str,
-			*col_width_list_str;
-       struct strlist	*dso_list,
-			*comm_list,
-			*sym_list,
-			*dso_from_list,
-			*dso_to_list,
-			*sym_from_list,
-			*sym_to_list;
-	const char	*symfs;
-};
+static inline int __symbol__join_symfs(char *bf, size_t size, const char *path)
+{
+	return path__join(bf, size, symbol_conf.symfs, path);
+}
+
+#define symbol__join_symfs(bf, path) __symbol__join_symfs(bf, sizeof(bf), path)
 
-extern struct symbol_conf symbol_conf;
 extern int vmlinux_path__nr_entries;
 extern char **vmlinux_path;
 
@@ -136,115 +115,159 @@ struct ref_reloc_sym {
 	u64		unrelocated_addr;
 };
 
-struct map_symbol {
-	struct map    *map;
-	struct symbol *sym;
-	bool	      unfolded;
-	bool	      has_children;
-};
+int dso__load(struct dso *dso, struct map *map);
+int dso__load_vmlinux(struct dso *dso, struct map *map,
+		      const char *vmlinux, bool vmlinux_allocated);
+int dso__load_vmlinux_path(struct dso *dso, struct map *map);
+int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
+			 bool no_kcore);
+int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map);
+
+void dso__insert_symbol(struct dso *dso,
+			struct symbol *sym);
+void dso__delete_symbol(struct dso *dso,
+			struct symbol *sym);
+
+struct symbol *dso__find_symbol(struct dso *dso, u64 addr);
+struct symbol *dso__find_symbol_nocache(struct dso *dso, u64 addr);
+
+struct symbol *dso__next_symbol_by_name(struct dso *dso, size_t *idx);
+struct symbol *dso__find_symbol_by_name(struct dso *dso, const char *name, size_t *idx);
+
+struct symbol *dso__first_symbol(struct dso *dso);
+struct symbol *dso__last_symbol(struct dso *dso);
+struct symbol *dso__next_symbol(struct symbol *sym);
+
+enum dso_type dso__type_fd(int fd);
+
+int filename__read_build_id(const char *filename, struct build_id *id);
+int sysfs__read_build_id(const char *filename, struct build_id *bid);
+int modules__parse(const char *filename, void *arg,
+		   int (*process_module)(void *arg, const char *name,
+					 u64 start, u64 size));
+int filename__read_debuglink(const char *filename, char *debuglink,
+			     size_t size);
+bool filename__has_section(const char *filename, const char *sec);
 
-struct addr_map_symbol {
-	struct map    *map;
-	struct symbol *sym;
-	u64	      addr;
-	u64	      al_addr;
-};
+struct perf_env;
+int symbol__init(struct perf_env *env);
+void symbol__exit(void);
+void symbol__elf_init(void);
+int symbol__annotation_init(void);
 
-struct branch_info {
-	struct addr_map_symbol from;
-	struct addr_map_symbol to;
-	struct branch_flags flags;
-};
+struct symbol *symbol__new(u64 start, u64 len, u8 binding, u8 type, const char *name);
+size_t __symbol__fprintf_symname_offs(const struct symbol *sym,
+				      const struct addr_location *al,
+				      bool unknown_as_addr,
+				      bool print_offsets, FILE *fp);
+size_t symbol__fprintf_symname_offs(const struct symbol *sym,
+				    const struct addr_location *al, FILE *fp);
+size_t __symbol__fprintf_symname(const struct symbol *sym,
+				 const struct addr_location *al,
+				 bool unknown_as_addr, FILE *fp);
+size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
+size_t symbol__fprintf(struct symbol *sym, FILE *fp);
+bool symbol__restricted_filename(const char *filename,
+				 const char *restricted_filename);
+int symbol__config_symfs(const struct option *opt __maybe_unused,
+			 const char *dir, int unset __maybe_unused);
 
-struct mem_info {
-	struct addr_map_symbol iaddr;
-	struct addr_map_symbol daddr;
-	union perf_mem_data_src data_src;
-};
+struct symsrc;
 
-struct addr_location {
-	struct thread *thread;
-	struct map    *map;
-	struct symbol *sym;
-	u64	      addr;
-	char	      level;
-	bool	      filtered;
-	u8	      cpumode;
-	s32	      cpu;
-};
+#ifdef HAVE_LIBBFD_SUPPORT
+int dso__load_bfd_symbols(struct dso *dso, const char *debugfile);
+#endif
 
-struct symsrc {
-	char *name;
-	int fd;
-	enum dso_binary_type type;
+int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
+		  struct symsrc *runtime_ss, int kmodule);
+int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss);
 
-#ifdef LIBELF_SUPPORT
-	Elf *elf;
-	GElf_Ehdr ehdr;
+char *dso__demangle_sym(struct dso *dso, int kmodule, const char *elf_name);
 
-	Elf_Scn *opdsec;
-	size_t opdidx;
-	GElf_Shdr opdshdr;
+void __symbols__insert(struct rb_root_cached *symbols, struct symbol *sym,
+		       bool kernel);
+void symbols__insert(struct rb_root_cached *symbols, struct symbol *sym);
+void symbols__fixup_duplicate(struct rb_root_cached *symbols);
+void symbols__fixup_end(struct rb_root_cached *symbols, bool is_kallsyms);
 
-	Elf_Scn *symtab;
-	GElf_Shdr symshdr;
+typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);
+int file__read_maps(int fd, bool exe, mapfn_t mapfn, void *data,
+		    bool *is_64_bit);
 
-	Elf_Scn *dynsym;
-	size_t dynsym_idx;
-	GElf_Shdr dynshdr;
+#define PERF_KCORE_EXTRACT "/tmp/perf-kcore-XXXXXX"
 
-	bool adjust_symbols;
-#endif
+struct kcore_extract {
+	char *kcore_filename;
+	u64 addr;
+	u64 offs;
+	u64 len;
+	char extract_filename[sizeof(PERF_KCORE_EXTRACT)];
+	int fd;
 };
 
-void symsrc__destroy(struct symsrc *ss);
-int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
-		 enum dso_binary_type type);
-bool symsrc__has_symtab(struct symsrc *ss);
-bool symsrc__possibly_runtime(struct symsrc *ss);
+int kcore_extract__create(struct kcore_extract *kce);
+void kcore_extract__delete(struct kcore_extract *kce);
 
-int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter);
-int dso__load_vmlinux(struct dso *dso, struct map *map,
-		      const char *vmlinux, symbol_filter_t filter);
-int dso__load_vmlinux_path(struct dso *dso, struct map *map,
-			   symbol_filter_t filter);
-int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map,
-		       symbol_filter_t filter);
-
-struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
-				u64 addr);
-struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
-					const char *name);
-
-int filename__read_build_id(const char *filename, void *bf, size_t size);
-int sysfs__read_build_id(const char *filename, void *bf, size_t size);
-int kallsyms__parse(const char *filename, void *arg,
-		    int (*process_symbol)(void *arg, const char *name,
-					  char type, u64 start));
-int filename__read_debuglink(const char *filename, char *debuglink,
-			     size_t size);
+int kcore_copy(const char *from_dir, const char *to_dir);
+int compare_proc_modules(const char *from, const char *to);
 
-int symbol__init(void);
-void symbol__exit(void);
-void symbol__elf_init(void);
-struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name);
-size_t symbol__fprintf_symname_offs(const struct symbol *sym,
-				    const struct addr_location *al, FILE *fp);
-size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
-size_t symbol__fprintf(struct symbol *sym, FILE *fp);
-bool symbol_type__is_a(char symbol_type, enum map_type map_type);
-bool symbol__restricted_filename(const char *filename,
-				 const char *restricted_filename);
+int setup_list(struct strlist **list, const char *list_str,
+	       const char *list_name);
+int setup_intlist(struct intlist **list, const char *list_str,
+		  const char *list_name);
 
-int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
-		  struct symsrc *runtime_ss, symbol_filter_t filter,
-		  int kmodule);
-int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss,
-				struct map *map, symbol_filter_t filter);
-
-void symbols__insert(struct rb_root *symbols, struct symbol *sym);
-void symbols__fixup_duplicate(struct rb_root *symbols);
-void symbols__fixup_end(struct rb_root *symbols);
-void __map_groups__fixup_end(struct map_groups *mg, enum map_type type);
+#ifdef HAVE_LIBELF_SUPPORT
+bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
+void arch__sym_update(struct symbol *s, GElf_Sym *sym);
+#endif
+
+const char *arch__normalize_symbol_name(const char *name);
+#define SYMBOL_A 0
+#define SYMBOL_B 1
+
+int arch__compare_symbol_names(const char *namea, const char *nameb);
+int arch__compare_symbol_names_n(const char *namea, const char *nameb,
+				 unsigned int n);
+int arch__choose_best_symbol(struct symbol *syma, struct symbol *symb);
+
+enum symbol_tag_include {
+	SYMBOL_TAG_INCLUDE__NONE = 0,
+	SYMBOL_TAG_INCLUDE__DEFAULT_ONLY
+};
+
+int symbol__match_symbol_name(const char *namea, const char *nameb,
+			      enum symbol_tag_include includes);
+
+/* structure containing an SDT note's info */
+struct sdt_note {
+	char *name;			/* name of the note*/
+	char *provider;			/* provider name */
+	char *args;
+	bool bit32;			/* whether the location is 32 bits? */
+	union {				/* location, base and semaphore addrs */
+		Elf64_Addr a64[3];
+		Elf32_Addr a32[3];
+	} addr;
+	struct list_head note_list;	/* SDT notes' list */
+};
+
+int get_sdt_note_list(struct list_head *head, const char *target);
+int cleanup_sdt_note_list(struct list_head *sdt_notes);
+int sdt_notes__get_count(struct list_head *start);
+
+#define SDT_PROBES_SCN ".probes"
+#define SDT_BASE_SCN ".stapsdt.base"
+#define SDT_NOTE_SCN  ".note.stapsdt"
+#define SDT_NOTE_TYPE 3
+#define SDT_NOTE_NAME "stapsdt"
+#define NR_ADDR 3
+
+enum {
+	SDT_NOTE_IDX_LOC = 0,
+	SDT_NOTE_IDX_BASE,
+	SDT_NOTE_IDX_REFCTR,
+};
+
+int symbol__validate_sym_arguments(void);
 
 #endif /* __PERF_SYMBOL */