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authorSam Ravnborg <sam@mars.ravnborg.org>2006-03-05 00:16:26 +0100
committerSam Ravnborg <sam@mars.ravnborg.org>2006-03-05 00:16:26 +0100
commit9209aed0726c77ad13b8d83e73a3cf9f59a8c2b2 (patch)
tree89f9a3c64883051f95930d821c62fc9b1a8a201c /scripts
parentkbuild: kill trailing whitespace in modpost & friends (diff)
downloadlinux-dev-9209aed0726c77ad13b8d83e73a3cf9f59a8c2b2.tar.xz
linux-dev-9209aed0726c77ad13b8d83e73a3cf9f59a8c2b2.zip
kbuild: kill false positives from section mismatch warnings for powerpc
Building an allmodconfig kernel for ppc64 revealed a number of false positives - originally reported by Andrew Morton. This patch removes most if not all false positives for ppc64: Section .opd The .opd section contains function descriptors at least for ppc64. So ignore it for .init.text (was ignored for .exit.text). See description of function descriptors here: http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi-1.7.html Section .toc1 ppc64 places some static variables in .toc1 - ignore the. Section __bug_tabe BUG() and friends uses __bug_table. Ignore warnings from that section. Module parameters are placed in .data.rel for ppc64, for adjust pattern to match on section named .data* Tested with gcc: 3.4.0 and binutils 2.15.90.0.3 Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mod/modpost.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 5de3c63091e9..c4dc1d72d02e 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -483,7 +483,7 @@ static int strrcmp(const char *s, const char *sub)
* this pattern.
* The pattern is identified by:
* tosec = .init.data
- * fromsec = .data
+ * fromsec = .data*
* atsym =__param*
*
* Pattern 2:
@@ -512,7 +512,7 @@ static int secref_whitelist(const char *tosec, const char *fromsec,
/* Check for pattern 1 */
if (strcmp(tosec, ".init.data") != 0)
f1 = 0;
- if (strcmp(fromsec, ".data") != 0)
+ if (strncmp(fromsec, ".data", strlen(".data")) != 0)
f1 = 0;
if (strncmp(atsym, "__param", strlen("__param")) != 0)
f1 = 0;
@@ -743,9 +743,12 @@ static int init_section_ref_ok(const char *name)
/* Absolute section names */
const char *namelist1[] = {
".init",
+ ".opd", /* see comment [OPD] at exit_section_ref_ok() */
+ ".toc1", /* used by ppc64 */
".stab",
".rodata",
".text.lock",
+ "__bug_table", /* used by powerpc for BUG() */
".pci_fixup_header",
".pci_fixup_final",
".pdr",
@@ -812,8 +815,10 @@ static int exit_section_ref_ok(const char *name)
".exit.data",
".init.text",
".opd", /* See comment [OPD] */
+ ".toc1", /* used by ppc64 */
".altinstructions",
".pdr",
+ "__bug_table", /* used by powerpc for BUG() */
".exitcall.exit",
".eh_frame",
".stab",