From: Miroslav Benes <mbenes@suse.cz>
To: Alexandre Chartre <alexandre.chartre@oracle.com>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
jpoimboe@redhat.com, peterz@infradead.org, jthierry@redhat.com,
tglx@linutronix.de
Subject: Re: [PATCH V3 3/9] objtool: Add support for intra-function calls
Date: Thu, 16 Apr 2020 14:12:40 +0200 (CEST) [thread overview]
Message-ID: <alpine.LSU.2.21.2004161407340.10475@pobox.suse.cz> (raw)
In-Reply-To: <20200414103618.12657-4-alexandre.chartre@oracle.com>
> +static int configure_call(struct objtool_file *file, struct instruction *insn)
> +{
> + unsigned long dest_off;
> +
> + dest_off = insn->offset + insn->len + insn->immediate;
> + insn->call_dest = find_func_by_offset(insn->sec, dest_off);
> + if (!insn->call_dest)
> + insn->call_dest = find_symbol_by_offset(insn->sec, dest_off);
> +
> + if (insn->call_dest) {
> + /* regular call */
> + if (insn->func && insn->call_dest->type != STT_FUNC) {
> + WARN_FUNC("unsupported call to non-function",
> + insn->sec, insn->offset);
> + return -1;
> + }
> + return 0;
> + }
> +
> + /* intra-function call */
> + if (!insn->intra_function_call)
> + WARN_FUNC("intra-function call", insn->sec, insn->offset);
"unsupported intra-function call" ?
Miroslav
next prev parent reply other threads:[~2020-04-16 12:12 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 10:36 [PATCH V3 0/9] objtool changes to check retpoline code Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 1/9] objtool: is_fentry_call() crashes if call has no destination Alexandre Chartre
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 2/9] objtool: Allow branches within the same alternative Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 3/9] objtool: Add support for intra-function calls Alexandre Chartre
2020-04-14 12:07 ` Julien Thierry
2020-04-16 12:12 ` Miroslav Benes [this message]
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 4/9] objtool: Handle return instruction with intra-function call Alexandre Chartre
2020-04-14 13:44 ` Julien Thierry
2020-04-14 10:36 ` [PATCH V3 5/9] objtool: Add return address unwind hints Alexandre Chartre
2020-04-14 16:16 ` Peter Zijlstra
2020-04-14 16:40 ` Alexandre Chartre
2020-04-14 17:56 ` Peter Zijlstra
2020-04-14 18:31 ` Alexandre Chartre
2020-04-14 18:42 ` Peter Zijlstra
2020-04-14 19:27 ` Alexandre Chartre
2020-04-14 19:48 ` Peter Zijlstra
2020-04-14 10:36 ` [PATCH V3 6/9] objtool: Report inconsistent stack changes in alternative Alexandre Chartre
2020-04-14 15:35 ` Julien Thierry
2020-04-14 22:41 ` kbuild test robot
2020-04-14 23:09 ` kbuild test robot
2020-04-16 14:18 ` Peter Zijlstra
2020-04-16 14:43 ` Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 7/9] x86/speculation: Change __FILL_RETURN_BUFFER to work with objtool Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 8/9] x86/speculation: Add return address unwind hints to retpoline and RSB stuffing Alexandre Chartre
2020-04-14 10:36 ` [PATCH V3 9/9] x86/speculation: Annotate intra-function calls Alexandre Chartre
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