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[XEN PATCH] eclair: allow and document use of GCC extension for label addresses
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
- Date: Fri, 23 May 2025 09:20:35 +0200
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- Cc: sstabellini@xxxxxxxxxx, michal.orzel@xxxxxxx, xenia.ragiadakou@xxxxxxx, ayan.kumar.halder@xxxxxxx, consulting@xxxxxxxxxxx, Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>, Doug Goldstein <cardoe@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Fri, 23 May 2025 07:20:45 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
No functional change.
Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
---
This fixes the CI error for R1.1 on this patch that stems from using the label
inside asm goto:
https://lore.kernel.org/xen-devel/20250521143658.312514-1-andrew.cooper3@xxxxxxxxxx/
---
automation/eclair_analysis/ECLAIR/toolchain.ecl | 5 +++++
docs/misra/C-language-toolchain.rst | 4 ++++
2 files changed, 9 insertions(+)
diff --git a/automation/eclair_analysis/ECLAIR/toolchain.ecl
b/automation/eclair_analysis/ECLAIR/toolchain.ecl
index 8ebf9f132cf2..842f8377e561 100644
--- a/automation/eclair_analysis/ECLAIR/toolchain.ecl
+++ b/automation/eclair_analysis/ECLAIR/toolchain.ecl
@@ -108,6 +108,11 @@ volatile"
-config=STD.funojptr,behavior+={c99,GCC_X86_64,specified}
-doc_end
+-doc_begin="See section \"6.3 Labels as Values\" of "GCC_MANUAL"."
+-config=STD.adrslabl,behavior={c99,GCC_ARM64,specified}
+-config=STD.adrslabl,behavior={c99,GCC_X86_64,specified}
+-doc_end
+
-doc_begin="
ext_c_missing_varargs_arg: see Section \"6.21 Macros with a Variable
Number of Arguments\" of "GCC_MANUAL".
ext_enum_value_not_int: non-documented GCC extension.
diff --git a/docs/misra/C-language-toolchain.rst
b/docs/misra/C-language-toolchain.rst
index 3a1ce651d7fd..cb81f5c09872 100644
--- a/docs/misra/C-language-toolchain.rst
+++ b/docs/misra/C-language-toolchain.rst
@@ -214,6 +214,10 @@ The table columns are as follows:
- All architectures
- See Section "4.5 Integers" of GCC_MANUAL.
+ * - Taking the address of a label
+ - All architectures
+ - See Section "6.3 Labels as Values" of GCC_MANUAL.
+
Translation Limits
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2.43.0
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