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| author | Sam Ravnborg <sam@mars.ravnborg.org> | 2006-03-05 12:02:46 +0100 |
|---|---|---|
| committer | Sam Ravnborg <sam@mars.ravnborg.org> | 2006-03-05 12:02:46 +0100 |
| commit | 43c74d179596ba1f8eceb8c6a5c7e11afe233662 (patch) | |
| tree | 09f7fcee82d8a464706b77e171956cc23661baf4 /scripts/mod | |
| parent | e835a39c1c1f023ef443f735b0e98b08660ae0e4 (diff) | |
| download | linux-43c74d179596ba1f8eceb8c6a5c7e11afe233662.tar.gz linux-43c74d179596ba1f8eceb8c6a5c7e11afe233662.tar.bz2 linux-43c74d179596ba1f8eceb8c6a5c7e11afe233662.zip | |
kbuild: in the section mismatch check try harder to find symbols
When searching for symbols the only check performed was if
offset equals st_value. Adding an additional check to see if st_name
points t a valid name made us sort out a few more false positives and
let us report more correct names in warnings.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/mod')
| -rw-r--r-- | scripts/mod/modpost.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 3b570b18c2e4..3648683a26c5 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -558,7 +558,10 @@ static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf_Addr addr, } /* - * Find symbols before or equal addr and after addr - in the section sec + * Find symbols before or equal addr and after addr - in the section sec. + * If we find two symbols with equal offset prefer one with a valid name. + * The ELF format may have a better way to detect what type of symbol + * it is, but this works for now. **/ static void find_symbols_between(struct elf_info *elf, Elf_Addr addr, const char *sec, @@ -587,6 +590,12 @@ static void find_symbols_between(struct elf_info *elf, Elf_Addr addr, beforediff = addr - sym->st_value; *before = sym; } + else if ((addr - sym->st_value) == beforediff) { + /* equal offset, valid name? */ + const char *name = elf->strtab + sym->st_name; + if (name && strlen(name)) + *before = sym; + } } else { @@ -594,6 +603,12 @@ static void find_symbols_between(struct elf_info *elf, Elf_Addr addr, afterdiff = sym->st_value - addr; *after = sym; } + else if ((sym->st_value - addr) == afterdiff) { + /* equal offset, valid name? */ + const char *name = elf->strtab + sym->st_name; + if (name && strlen(name)) + *after = sym; + } } } } |