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Message-ID: <12729c2b5f944bc2a6938bc3e3b33e5e703a2258.1736955567.git.christophe.leroy@csgroup.eu> Date: Wed, 15 Jan 2025 23:42:53 +0100 From: Christophe Leroy <christophe.leroy@...roup.eu> To: Josh Poimboeuf <jpoimboe@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, Julien Thierry <jthierry@...hat.com>, Miroslav Benes <mbenes@...e.cz>, Raphael Gault <raphael.gault@....com>, Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, Naveen N Rao <naveen@...nel.org>, Madhavan Srinivasan <maddy@...ux.ibm.com> Cc: Christophe Leroy <christophe.leroy@...roup.eu>, linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, llvm@...ts.linux.dev Subject: [PATCH v5 13/15] objtool: Prepare noreturns.h for more architectures noreturns.h is a mix of x86 specific functions and more generic core functions. In preparation of inclusion of powerpc, split x86 functions out of noreturns.h into arch/noreturns.h Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu> --- .../objtool/arch/x86/include/arch/noreturns.h | 20 +++++++++++++++++++ tools/objtool/noreturns.h | 14 ++----------- 2 files changed, 22 insertions(+), 12 deletions(-) create mode 100644 tools/objtool/arch/x86/include/arch/noreturns.h diff --git a/tools/objtool/arch/x86/include/arch/noreturns.h b/tools/objtool/arch/x86/include/arch/noreturns.h new file mode 100644 index 000000000000..a4262aff3917 --- /dev/null +++ b/tools/objtool/arch/x86/include/arch/noreturns.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* + * This is a (sorted!) list of all known __noreturn functions in arch/x86. + * It's needed for objtool to properly reverse-engineer the control flow graph. + * + * Yes, this is unfortunate. A better solution is in the works. + */ +NORETURN(cpu_bringup_and_idle) +NORETURN(ex_handler_msr_mce) +NORETURN(hlt_play_dead) +NORETURN(hv_ghcb_terminate) +NORETURN(machine_real_restart) +NORETURN(rewind_stack_and_make_dead) +NORETURN(sev_es_terminate) +NORETURN(snp_abort) +NORETURN(x86_64_start_kernel) +NORETURN(x86_64_start_reservations) +NORETURN(xen_cpu_bringup_again) +NORETURN(xen_start_kernel) diff --git a/tools/objtool/noreturns.h b/tools/objtool/noreturns.h index f37614cc2c1b..dfee1c91a70d 100644 --- a/tools/objtool/noreturns.h +++ b/tools/objtool/noreturns.h @@ -1,5 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ +#include <arch/noreturns.h> + /* * This is a (sorted!) list of all known __noreturn functions in the kernel. * It's needed for objtool to properly reverse-engineer the control flow graph. @@ -19,33 +21,21 @@ NORETURN(__x64_sys_exit_group) NORETURN(arch_cpu_idle_dead) NORETURN(bch2_trans_in_restart_error) NORETURN(bch2_trans_restart_error) -NORETURN(cpu_bringup_and_idle) NORETURN(cpu_startup_entry) NORETURN(do_exit) NORETURN(do_group_exit) NORETURN(do_task_dead) -NORETURN(ex_handler_msr_mce) -NORETURN(hlt_play_dead) -NORETURN(hv_ghcb_terminate) NORETURN(kthread_complete_and_exit) NORETURN(kthread_exit) NORETURN(kunit_try_catch_throw) -NORETURN(machine_real_restart) NORETURN(make_task_dead) NORETURN(mpt_halt_firmware) NORETURN(nmi_panic_self_stop) NORETURN(panic) NORETURN(panic_smp_self_stop) NORETURN(rest_init) -NORETURN(rewind_stack_and_make_dead) NORETURN(rust_begin_unwind) NORETURN(rust_helper_BUG) -NORETURN(sev_es_terminate) -NORETURN(snp_abort) NORETURN(start_kernel) NORETURN(stop_this_cpu) NORETURN(usercopy_abort) -NORETURN(x86_64_start_kernel) -NORETURN(x86_64_start_reservations) -NORETURN(xen_cpu_bringup_again) -NORETURN(xen_start_kernel) -- 2.47.0
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