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* [Bug target/111046] New: bpf: support naked functions in BPF
@ 2023-08-17 10:51 jemarch at gcc dot gnu.org
2023-08-17 12:40 ` [Bug target/111046] " cvs-commit at gcc dot gnu.org
2023-08-17 12:47 ` jemarch at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: jemarch at gcc dot gnu.org @ 2023-08-17 10:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111046
Bug ID: 111046
Summary: bpf: support naked functions in BPF
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jemarch at gcc dot gnu.org
Target Milestone: ---
BPF programs make use of the `naked' function attribute. This attribute is
supported by several targets in GCC but not currently by bpf targets.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/111046] bpf: support naked functions in BPF
2023-08-17 10:51 [Bug target/111046] New: bpf: support naked functions in BPF jemarch at gcc dot gnu.org
@ 2023-08-17 12:40 ` cvs-commit at gcc dot gnu.org
2023-08-17 12:47 ` jemarch at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-08-17 12:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111046
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jose E. Marchesi <jemarch@gcc.gnu.org>:
https://gcc.gnu.org/g:b7c50f68f26146e7038e9793b6c623ff4c4895d3
commit r14-3284-gb7c50f68f26146e7038e9793b6c623ff4c4895d3
Author: Jose E. Marchesi <jose.marchesi@oracle.com>
Date: Thu Aug 17 14:19:15 2023 +0200
bpf: support `naked' function attributes in BPF targets
The kernel selftests and other BPF programs make extensive use of the
`naked' function attribute with bodies written using basic inline
assembly. This patch adds support for the attribute to
bpf-unkonwn-none, makes it to inhibit warnings due to lack of explicit
`return' statement, and updates documentation and testsuite
accordingly.
Tested in x86_64-linux-gnu host and bpf-unknown-none target.
gcc/ChangeLog
PR target/111046
* config/bpf/bpf.cc (bpf_attribute_table): Add entry for the
`naked' function attribute.
(bpf_warn_func_return): New function.
(TARGET_WARN_FUNC_RETURN): Define.
(bpf_expand_prologue): Add preventive comment.
(bpf_expand_epilogue): Likewise.
* doc/extend.texi (BPF Function Attributes): Document the `naked'
function attribute.
gcc/testsuite/ChangeLog
* gcc.target/bpf/naked-1.c: New test.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/111046] bpf: support naked functions in BPF
2023-08-17 10:51 [Bug target/111046] New: bpf: support naked functions in BPF jemarch at gcc dot gnu.org
2023-08-17 12:40 ` [Bug target/111046] " cvs-commit at gcc dot gnu.org
@ 2023-08-17 12:47 ` jemarch at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: jemarch at gcc dot gnu.org @ 2023-08-17 12:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111046
Jose E. Marchesi <jemarch at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
--- Comment #2 from Jose E. Marchesi <jemarch at gcc dot gnu.org> ---
Fixed with the above commit.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-08-17 10:51 [Bug target/111046] New: bpf: support naked functions in BPF jemarch at gcc dot gnu.org
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2023-08-17 12:47 ` jemarch at gcc dot gnu.org
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