From 8a8b5b25ff8cb9119fc781ea686826723c93d2ff Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Barnab=C3=A1s=20P=C5=91cze?= Date: Wed, 9 Oct 2024 15:28:14 +0200 Subject: [PATCH 03/31] libsysprof: elf: do not generate fallback names Fallback names are only used in `SysprofElfSymbolizer` at the moment, but it also has code to generate fallback symbols. --- src/libsysprof/sysprof-elf-private.h | 3 +-- src/libsysprof/sysprof-elf-symbolizer.c | 12 ++++++------ src/libsysprof/sysprof-elf.c | 17 +++++------------ 3 files changed, 12 insertions(+), 20 deletions(-) diff --git a/src/libsysprof/sysprof-elf-private.h b/src/libsysprof/sysprof-elf-private.h index b4d0f737..146bc2de 100644 --- a/src/libsysprof/sysprof-elf-private.h +++ b/src/libsysprof/sysprof-elf-private.h @@ -42,8 +42,7 @@ const char *sysprof_elf_get_debug_link (SysprofElf *self); char *sysprof_elf_get_symbol_at_address (SysprofElf *self, guint64 address, guint64 *begin_address, - guint64 *end_address, - gboolean *is_fallback); + guint64 *end_address); SysprofElf *sysprof_elf_get_debug_link_elf (SysprofElf *self); void sysprof_elf_set_debug_link_elf (SysprofElf *self, SysprofElf *debug_link_elf); diff --git a/src/libsysprof/sysprof-elf-symbolizer.c b/src/libsysprof/sysprof-elf-symbolizer.c index 8fdf204f..f7aabef7 100644 --- a/src/libsysprof/sysprof-elf-symbolizer.c +++ b/src/libsysprof/sysprof-elf-symbolizer.c @@ -61,9 +61,9 @@ sysprof_elf_symbolizer_symbolize (SysprofSymbolizer *symbolizer, g_autoptr(SysprofElf) elf = NULL; SysprofDocumentMmap *map; g_autofree char *name = NULL; + const char *nick = NULL; const char *path; const char *build_id; - gboolean is_fallback = FALSE; guint64 map_begin; guint64 map_end; guint64 relative_address; @@ -115,14 +115,15 @@ sysprof_elf_symbolizer_symbolize (SysprofSymbolizer *symbolizer, NULL))) goto fallback; + nick = sysprof_elf_get_nick (elf); + /* Try to get the symbol name at the address and the begin/end address * so that it can be inserted into our symbol cache. */ if (!(name = sysprof_elf_get_symbol_at_address (elf, relative_address, &begin_address, - &end_address, - &is_fallback))) + &end_address))) goto fallback; /* Sanitize address ranges if we have to. Sometimes that can happen @@ -135,11 +136,10 @@ sysprof_elf_symbolizer_symbolize (SysprofSymbolizer *symbolizer, ret = _sysprof_symbol_new (sysprof_strings_get (strings, name), sysprof_strings_get (strings, path), - sysprof_strings_get (strings, sysprof_elf_get_nick (elf)), + sysprof_strings_get (strings, nick), map_begin + (begin_address - file_offset), map_begin + (end_address - file_offset), SYSPROF_SYMBOL_KIND_USER); - ret->is_fallback = is_fallback; return ret; @@ -156,7 +156,7 @@ fallback: ret = _sysprof_symbol_new (sysprof_strings_get (strings, name), sysprof_strings_get (strings, path), - NULL, + sysprof_strings_get (strings, nick), begin_address, end_address, SYSPROF_SYMBOL_KIND_USER); ret->is_fallback = TRUE; diff --git a/src/libsysprof/sysprof-elf.c b/src/libsysprof/sysprof-elf.c index 0534eccb..df73ce6d 100644 --- a/src/libsysprof/sysprof-elf.c +++ b/src/libsysprof/sysprof-elf.c @@ -409,8 +409,7 @@ sysprof_elf_get_symbol_at_address_internal (SysprofElf *self, guint64 address, guint64 *begin_address, guint64 *end_address, - guint64 text_offset, - gboolean *is_fallback) + guint64 text_offset) { const ElfSym *symbol; char *ret = NULL; @@ -421,7 +420,7 @@ sysprof_elf_get_symbol_at_address_internal (SysprofElf *self, if (self->debug_link_elf != NULL) { - ret = sysprof_elf_get_symbol_at_address_internal (self->debug_link_elf, filename, address, begin_address, end_address, text_offset, is_fallback); + ret = sysprof_elf_get_symbol_at_address_internal (self->debug_link_elf, filename, address, begin_address, end_address, text_offset); if (ret != NULL) return ret; @@ -447,11 +446,7 @@ sysprof_elf_get_symbol_at_address_internal (SysprofElf *self, } else { - begin = address; - end = address + 1; - ret = g_strdup_printf ("In File %s+0x%"G_GINT64_MODIFIER"x", filename, address); - if (is_fallback) - *is_fallback = TRUE; + return NULL; } if (begin_address) @@ -467,16 +462,14 @@ char * sysprof_elf_get_symbol_at_address (SysprofElf *self, guint64 address, guint64 *begin_address, - guint64 *end_address, - gboolean *is_fallback) + guint64 *end_address) { return sysprof_elf_get_symbol_at_address_internal (self, self->file, address, begin_address, end_address, - self->text_offset, - is_fallback); + self->text_offset); } /** -- 2.45.2