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authorVineet Gupta <vgupta@synopsys.com>2016-10-25 21:23:19 +0300
committerVineet Gupta <vgupta@synopsys.com>2016-10-28 20:10:29 +0300
commitb75dcd9c7d352c7d9ea9010e95c708595094896a (patch)
treeea93f43853fb22b32e60ff745a88a963b7f29ac3 /arch
parentd65283f7b695b5d04ca1ab58b6bb41f443b96286 (diff)
downloadlinux-b75dcd9c7d352c7d9ea9010e95c708595094896a.tar.xz
ARC: module: print pretty section names
Now that we have referece to section name string table in apply_relocate_add(), use it to - print the name of section being relocated - print symbol with NULL name (since it refers to a section) before | Section to fixup 7000a060 | ========================================================= | rela->r_off | rela->addend | sym->st_value | ADDR | VALUE | ========================================================= | 1c 0 7000e000 7000a07c 7000e000 [] | 40 0 7000a000 7000a0a0 7000a000 [] after | Section to fixup .eh_frame @7000a060 | ========================================================= | r_off r_add st_value ADDRESS VALUE | ========================================================= | 1c 0 7000e000 7000a07c 7000e000 [.init.text] | 40 0 7000a000 7000a0a0 7000a000 [.exit.text] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arc/kernel/module.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/arch/arc/kernel/module.c b/arch/arc/kernel/module.c
index 24bd2ffb90b7..42e964db2967 100644
--- a/arch/arc/kernel/module.c
+++ b/arch/arc/kernel/module.c
@@ -51,31 +51,33 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
unsigned int relsec, /* sec index for relo sec */
struct module *module)
{
- int i, n;
+ int i, n, relo_type;
Elf32_Rela *rel_entry = (void *)sechdrs[relsec].sh_addr;
Elf32_Sym *sym_entry, *sym_sec;
- Elf32_Addr relocation;
- Elf32_Addr location;
- Elf32_Addr sec_to_patch;
- int relo_type;
+ Elf32_Addr relocation, location, tgt_addr;
unsigned int tgtsec;
+ /*
+ * @relsec has relocations e.g. .rela.init.text
+ * @tgtsec is section to patch e.g. .init.text
+ */
tgtsec = sechdrs[relsec].sh_info;
- sec_to_patch = sechdrs[tgtsec].sh_addr;
+ tgt_addr = sechdrs[tgtsec].sh_addr;
sym_sec = (Elf32_Sym *) sechdrs[symindex].sh_addr;
n = sechdrs[relsec].sh_size / sizeof(*rel_entry);
- pr_debug("\n========== Module Sym reloc ===========================\n");
- pr_debug("Section to fixup %x\n", sec_to_patch);
+ pr_debug("\nSection to fixup %s @%x\n",
+ module->arch.secstr + sechdrs[tgtsec].sh_name, tgt_addr);
pr_debug("=========================================================\n");
- pr_debug("rela->r_off | rela->addend | sym->st_value | ADDR | VALUE\n");
+ pr_debug("r_off\tr_add\tst_value ADDRESS VALUE\n");
pr_debug("=========================================================\n");
/* Loop thru entries in relocation section */
for (i = 0; i < n; i++) {
+ const char *s;
/* This is where to make the change */
- location = sec_to_patch + rel_entry[i].r_offset;
+ location = tgt_addr + rel_entry[i].r_offset;
/* This is the symbol it is referring to. Note that all
undefined symbols have been resolved. */
@@ -83,10 +85,15 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
relocation = sym_entry->st_value + rel_entry[i].r_addend;
- pr_debug("\t%x\t\t%x\t\t%x %x %x [%s]\n",
- rel_entry[i].r_offset, rel_entry[i].r_addend,
- sym_entry->st_value, location, relocation,
- strtab + sym_entry->st_name);
+ if (sym_entry->st_name == 0 && ELF_ST_TYPE (sym_entry->st_info) == STT_SECTION) {
+ s = module->arch.secstr + sechdrs[sym_entry->st_shndx].sh_name;
+ } else {
+ s = strtab + sym_entry->st_name;
+ }
+
+ pr_debug(" %x\t%x\t%x %x %x [%s]\n",
+ rel_entry[i].r_offset, rel_entry[i].r_addend,
+ sym_entry->st_value, location, relocation, s);
/* This assumes modules are built with -mlong-calls
* so any branches/jumps are absolute 32 bit jmps