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authorIngo Molnar <mingo@kernel.org>2020-04-22 12:32:05 +0200
committerIngo Molnar <mingo@kernel.org>2020-04-23 08:34:18 +0200
commit0c98be8118221a8d3de572740f29dd02ed9686a5 (patch)
tree91292423dcd2b917c6e1c1a9e277e0bcf6ac834a
parentbc359ff2f6f3e8a9df38c39017e269bc442357c7 (diff)
downloadlinux-0c98be8118221a8d3de572740f29dd02ed9686a5.tar.bz2
objtool: Constify arch_decode_instruction()
Mostly straightforward constification, except that WARN_FUNC() needs a writable pointer while we have read-only pointers, so deflect this to WARN(). Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20200422103205.61900-4-mingo@kernel.org
-rw-r--r--tools/objtool/arch.h2
-rw-r--r--tools/objtool/arch/x86/decode.c6
2 files changed, 4 insertions, 4 deletions
diff --git a/tools/objtool/arch.h b/tools/objtool/arch.h
index 561c3162d177..445b8fa73ccb 100644
--- a/tools/objtool/arch.h
+++ b/tools/objtool/arch.h
@@ -72,7 +72,7 @@ struct instruction;
void arch_initial_func_cfi_state(struct cfi_init_state *state);
-int arch_decode_instruction(struct elf *elf, struct section *sec,
+int arch_decode_instruction(const struct elf *elf, const struct section *sec,
unsigned long offset, unsigned int maxlen,
unsigned int *len, enum insn_type *type,
unsigned long *immediate,
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index f0d42ad7d5ff..c45a0b4e0760 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -27,7 +27,7 @@ static unsigned char op_to_cfi_reg[][2] = {
{CFI_DI, CFI_R15},
};
-static int is_x86_64(struct elf *elf)
+static int is_x86_64(const struct elf *elf)
{
switch (elf->ehdr.e_machine) {
case EM_X86_64:
@@ -77,7 +77,7 @@ unsigned long arch_jump_destination(struct instruction *insn)
return insn->offset + insn->len + insn->immediate;
}
-int arch_decode_instruction(struct elf *elf, struct section *sec,
+int arch_decode_instruction(const struct elf *elf, const struct section *sec,
unsigned long offset, unsigned int maxlen,
unsigned int *len, enum insn_type *type,
unsigned long *immediate,
@@ -98,7 +98,7 @@ int arch_decode_instruction(struct elf *elf, struct section *sec,
insn_get_length(&insn);
if (!insn_complete(&insn)) {
- WARN_FUNC("can't decode instruction", sec, offset);
+ WARN("can't decode instruction at %s:0x%lx", sec->name, offset);
return -1;
}