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authorWolfram Sang <wsa+renesas@sang-engineering.com>2025-03-25 12:35:59 +0100
committerWolfram Sang <wsa+renesas@sang-engineering.com>2025-03-25 12:35:59 +0100
commit21fd84953571c7d2b73552ffcf0d0d1bcc7e8a20 (patch)
treea00a9b07c1e2431d68be62c1fbc17de91d95429c /tools/objtool
parentirqdomain: i2c: Switch to irq_find_mapping() (diff)
parenti2c: iproc: Refactor prototype and remove redundant error checks (diff)
downloadlinux-21fd84953571c7d2b73552ffcf0d0d1bcc7e8a20.tar.gz
linux-21fd84953571c7d2b73552ffcf0d0d1bcc7e8a20.zip
Merge tag 'i2c-host-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-mergewindow
i2c-host updates for v6.15 Refactoring and cleanups - octeon, cadence, i801, pasemi, mlxbf, bcm-iproc: general refactorings - octeon: remove 10-bit address support Improvements - amd-asf: improved error handling - designware: use guard(mutex) - amd-asf, designware: update naming to follow latest specs - cadence: fix cleanup path in probe - i801: use MMIO and I/O mapping helpers to access registers - pxa: handle error after clk_prepare_enable New features - added i2c_10bit_addr_*_from_msg() and updated multiple drivers - omap: added multiplexer state handling - qcom-geni: update frequency configuration - qup: introduce DMA usage policy New hardware support - exynos: add support for Samsung exynos7870 - k1: add support for spacemit k1 (new driver) - imx: add support for i.mx94 lpi2c - rk3x: add support for rk3562 Multiplexers - ltc4306, reg: fix assignment in platform_driver structure
Diffstat (limited to 'tools/objtool')
-rw-r--r--tools/objtool/Makefile6
-rw-r--r--tools/objtool/check.c19
-rw-r--r--tools/objtool/include/objtool/special.h2
-rw-r--r--tools/objtool/noreturns.h2
4 files changed, 17 insertions, 12 deletions
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index f56e27727534..7a65948892e5 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -46,12 +46,6 @@ HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)"
AWK = awk
MKDIR = mkdir
-ifeq ($(V),1)
- Q =
-else
- Q = @
-endif
-
BUILD_ORC := n
ifeq ($(SRCARCH),x86)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 753dbc4f8198..ce973d9d8e6d 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -227,6 +227,7 @@ static bool is_rust_noreturn(const struct symbol *func)
str_ends_with(func->name, "_4core9panicking18panic_bounds_check") ||
str_ends_with(func->name, "_4core9panicking19assert_failed_inner") ||
str_ends_with(func->name, "_4core9panicking36panic_misaligned_pointer_dereference") ||
+ strstr(func->name, "_4core9panicking13assert_failed") ||
strstr(func->name, "_4core9panicking11panic_const24panic_const_") ||
(strstr(func->name, "_4core5slice5index24slice_") &&
str_ends_with(func->name, "_fail"));
@@ -1975,6 +1976,14 @@ static int add_jump_table(struct objtool_file *file, struct instruction *insn,
reloc_addend(reloc) == pfunc->offset)
break;
+ /*
+ * Clang sometimes leaves dangling unused jump table entries
+ * which point to the end of the function. Ignore them.
+ */
+ if (reloc->sym->sec == pfunc->sec &&
+ reloc_addend(reloc) == pfunc->offset + pfunc->len)
+ goto next;
+
dest_insn = find_insn(file, reloc->sym->sec, reloc_addend(reloc));
if (!dest_insn)
break;
@@ -1992,6 +2001,7 @@ static int add_jump_table(struct objtool_file *file, struct instruction *insn,
alt->insn = dest_insn;
alt->next = insn->alts;
insn->alts = alt;
+next:
prev_offset = reloc_offset(reloc);
}
@@ -2264,7 +2274,7 @@ static int read_annotate(struct objtool_file *file,
if (sec->sh.sh_entsize != 8) {
static bool warned = false;
- if (!warned) {
+ if (!warned && opts.verbose) {
WARN("%s: dodgy linker, sh_entsize != 8", sec->name);
warned = true;
}
@@ -2462,13 +2472,14 @@ static void mark_rodata(struct objtool_file *file)
*
* - .rodata: can contain GCC switch tables
* - .rodata.<func>: same, if -fdata-sections is being used
- * - .rodata..c_jump_table: contains C annotated jump tables
+ * - .data.rel.ro.c_jump_table: contains C annotated jump tables
*
* .rodata.str1.* sections are ignored; they don't contain jump tables.
*/
for_each_sec(file, sec) {
- if (!strncmp(sec->name, ".rodata", 7) &&
- !strstr(sec->name, ".str1.")) {
+ if ((!strncmp(sec->name, ".rodata", 7) &&
+ !strstr(sec->name, ".str1.")) ||
+ !strncmp(sec->name, ".data.rel.ro", 12)) {
sec->rodata = true;
found = true;
}
diff --git a/tools/objtool/include/objtool/special.h b/tools/objtool/include/objtool/special.h
index e7ee7ffccefd..e049679bb17b 100644
--- a/tools/objtool/include/objtool/special.h
+++ b/tools/objtool/include/objtool/special.h
@@ -10,7 +10,7 @@
#include <objtool/check.h>
#include <objtool/elf.h>
-#define C_JUMP_TABLE_SECTION ".rodata..c_jump_table"
+#define C_JUMP_TABLE_SECTION ".data.rel.ro.c_jump_table"
struct special_alt {
struct list_head list;
diff --git a/tools/objtool/noreturns.h b/tools/objtool/noreturns.h
index b2174894f9f7..6bb7edda3094 100644
--- a/tools/objtool/noreturns.h
+++ b/tools/objtool/noreturns.h
@@ -19,7 +19,7 @@ NORETURN(__x64_sys_exit_group)
NORETURN(arch_cpu_idle_dead)
NORETURN(bch2_trans_in_restart_error)
NORETURN(bch2_trans_restart_error)
-NORETURN(bch2_trans_unlocked_error)
+NORETURN(bch2_trans_unlocked_or_in_restart_error)
NORETURN(cpu_bringup_and_idle)
NORETURN(cpu_startup_entry)
NORETURN(do_exit)