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objtool: Add for_each_reloc()

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Link: https://lore.kernel.org/r/dbfcb1037d8b958e52d097b67829c4c6811c24bb.1685464332.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
This commit is contained in:
Josh Poimboeuf
2023-05-30 10:21:02 -07:00
parent 5201a9bcb7
commit caa4a6b74b
2 changed files with 18 additions and 12 deletions
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24
tools/objtool/check.c
View File

@@ -591,7 +591,7 @@ static int add_dead_ends(struct objtool_file *file)
if (!rsec)
goto reachable;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -626,7 +626,7 @@ reachable:
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -1019,7 +1019,7 @@ static void add_ignores(struct objtool_file *file)
if (!rsec)
return;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
switch (reloc->sym->type) {
case STT_FUNC:
func = reloc->sym;
@@ -1260,7 +1260,7 @@ static int add_ignore_alternatives(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -1991,7 +1991,7 @@ static int add_jump_table(struct objtool_file *file, struct instruction *insn,
* Each @reloc is a switch table relocation which points to the target
* instruction.
*/
list_for_each_entry_from(reloc, &table->sec->reloc_list, list) {
for_each_reloc_from(table->sec, reloc) {
/* Check for the end of the table: */
if (reloc != table && reloc->jump_table_start)
@@ -2270,7 +2270,7 @@ static int read_noendbr_hints(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
insn = find_insn(file, reloc->sym->sec, reloc->sym->offset + reloc->addend);
if (!insn) {
WARN("bad .discard.noendbr entry");
@@ -2293,7 +2293,7 @@ static int read_retpoline_hints(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -2329,7 +2329,7 @@ static int read_instr_hints(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -2348,7 +2348,7 @@ static int read_instr_hints(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -2376,7 +2376,7 @@ static int read_validate_unret_hints(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
if (reloc->sym->type != STT_SECTION) {
WARN("unexpected relocation symbol type in %s", rsec->name);
return -1;
@@ -2404,7 +2404,7 @@ static int read_intra_function_calls(struct objtool_file *file)
if (!rsec)
return 0;
list_for_each_entry(reloc, &rsec->reloc_list, list) {
for_each_reloc(rsec, reloc) {
unsigned long dest_off;
if (reloc->sym->type != STT_SECTION) {
@@ -4404,7 +4404,7 @@ static int validate_ibt(struct objtool_file *file)
strstr(sec->name, "__patchable_function_entries"))
continue;
list_for_each_entry(reloc, &sec->rsec->reloc_list, list)
for_each_reloc(sec->rsec, reloc)
warnings += validate_ibt_data_reloc(file, reloc);
}

6
tools/objtool/include/objtool/elf.h
View File

@@ -209,6 +209,12 @@ static inline void mark_sec_changed(struct elf *elf, struct section *sec,
for_each_sec(file, __sec) \
sec_for_each_sym(__sec, sym)
#define for_each_reloc(rsec, reloc) \
list_for_each_entry(reloc, &rsec->reloc_list, list)
#define for_each_reloc_from(rsec, reloc) \
list_for_each_entry_from(reloc, &rsec->reloc_list, list)
#define OFFSET_STRIDE_BITS 4
#define OFFSET_STRIDE (1UL << OFFSET_STRIDE_BITS)
#define OFFSET_STRIDE_MASK (~(OFFSET_STRIDE - 1))