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[xen stable-4.19] xen: update ECLAIR service identifiers from MC3R1 to MC3A2.

Date: Wed, 18 Dec 2024 00:55:01 +0000

Delivery-date: Wed, 18 Dec 2024 00:55:13 +0000

List-id: "Change log for Mercurial $receive only$" <xen-changelog.lists.xenproject.org>

commit 8b584c97f88724a390fd17b08b2735f488d5f980 Author: Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx> AuthorDate: Tue Dec 10 11:37:23 2024 +0100 Commit: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> CommitDate: Tue Dec 17 13:09:58 2024 +0000 xen: update ECLAIR service identifiers from MC3R1 to MC3A2. Rename all instances of ECLAIR MISRA C:2012 service identifiers, identified by the prefix MC3R1, to use the prefix MC3A2, which refers to MISRA C:2012 Amendment 2 guidelines. This update is motivated by the need to upgrade ECLAIR GitLab runners that use the new naming scheme for MISRA C:2012 Amendment 2 guidelines. Changes to the docs/misra directory are needed in order to keep comment-based deviation up to date. Signed-off-by: Alessandro Zucchelli <alessandro.zucchelli@xxxxxxxxxxx> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> (cherry picked from commit 631f535a3d4ffd66a270672f0f787d79f3bf38f8) --- automation/eclair_analysis/ECLAIR/B.UNEVALEFF.ecl | 2 +- .../eclair_analysis/ECLAIR/accepted_guidelines.sh | 2 +- automation/eclair_analysis/ECLAIR/analysis.ecl | 6 +- automation/eclair_analysis/ECLAIR/deviations.ecl | 228 ++++++++++----------- automation/eclair_analysis/ECLAIR/monitored.ecl | 204 +++++++++--------- automation/eclair_analysis/ECLAIR/tagging.ecl | 160 +++++++-------- docs/misra/documenting-violations.rst | 6 +- docs/misra/safe.json | 26 +-- 8 files changed, 317 insertions(+), 317 deletions(-) diff --git a/automation/eclair_analysis/ECLAIR/B.UNEVALEFF.ecl b/automation/eclair_analysis/ECLAIR/B.UNEVALEFF.ecl index 92d8db8986..fa249b8e36 100644 --- a/automation/eclair_analysis/ECLAIR/B.UNEVALEFF.ecl +++ b/automation/eclair_analysis/ECLAIR/B.UNEVALEFF.ecl @@ -1,4 +1,4 @@ --clone_service=MC3R1.R13.6,B.UNEVALEFF +-clone_service=MC3A2.R13.6,B.UNEVALEFF -config=B.UNEVALEFF,summary="The operand of the `alignof' and `typeof' operators shall not contain any expression which has potential side effects" -config=B.UNEVALEFF,stmt_child_matcher= diff --git a/automation/eclair_analysis/ECLAIR/accepted_guidelines.sh b/automation/eclair_analysis/ECLAIR/accepted_guidelines.sh index 368135122c..2c4b339d0d 100755 --- a/automation/eclair_analysis/ECLAIR/accepted_guidelines.sh +++ b/automation/eclair_analysis/ECLAIR/accepted_guidelines.sh @@ -10,6 +10,6 @@ script_dir="$( accepted_rst=$1 grep -Eo "\`(Dir|Rule) [0-9]+\.[0-9]+" ${accepted_rst} \ - | sed -e 's/`Rule /MC3R1.R/' -e 's/`Dir /MC3R1.D/' -e 's/.*/-enable=&/' > ${script_dir}/accepted.ecl + | sed -e 's/`Rule /MC3A2.R/' -e 's/`Dir /MC3A2.D/' -e 's/.*/-enable=&/' > ${script_dir}/accepted.ecl echo "-enable=B.UNEVALEFF" >> ${script_dir}/accepted.ecl diff --git a/automation/eclair_analysis/ECLAIR/analysis.ecl b/automation/eclair_analysis/ECLAIR/analysis.ecl index df0b551812..824283a989 100644 --- a/automation/eclair_analysis/ECLAIR/analysis.ecl +++ b/automation/eclair_analysis/ECLAIR/analysis.ecl @@ -22,15 +22,15 @@ setq(analysis_kind,getenv("ANALYSIS_KIND")) -doc_begin="These configurations serve the purpose of recognizing the 'mem*' macros as their Standard Library equivalents." --config=MC3R1.R21.14,call_select+= +-config=MC3A2.R21.14,call_select+= {"macro(^memcmp$)&&any_arg(1..2, skip(__non_syntactic_paren_cast_stmts, node(string_literal)))", "any()", violation, "%{__callslct_any_base_fmt()}", {{arg, "%{__callslct_arg_fmt()}"}}} --config=MC3R1.R21.15,call_args+= +-config=MC3A2.R21.15,call_args+= {"macro(^mem(cmp|move|cpy)$)", {1, 2}, "unqual_pointee_compatible", "%{__argscmpr_culprit_fmt()}", "%{__argscmpr_evidence_fmt()}"} --config=MC3R1.R21.16,call_select+= +-config=MC3A2.R21.16,call_select+= {"macro(^memcmp$)&&any_arg(1..2, skip(__non_syntactic_paren_stmts, type(canonical(__memcmp_pte_types))))", "any()", violation, "%{__callslct_any_base_fmt()}", {{arg,"%{__callslct_arg_type_fmt()}"}}} diff --git a/automation/eclair_analysis/ECLAIR/deviations.ecl b/automation/eclair_analysis/ECLAIR/deviations.ecl index 0af1cb93d1..046d378087 100644 --- a/automation/eclair_analysis/ECLAIR/deviations.ecl +++ b/automation/eclair_analysis/ECLAIR/deviations.ecl @@ -4,36 +4,36 @@ -doc_begin="The compiler implementation guarantees that the unreachable code is removed. Constant expressions and unreachable branches of if and switch statements are expected." --config=MC3R1.R2.1,+reports={safe,"first_area(^.*has an invariantly.*$)"} --config=MC3R1.R2.1,+reports={safe,"first_area(^.*incompatible with labeled statement$)"} +-config=MC3A2.R2.1,+reports={safe,"first_area(^.*has an invariantly.*$)"} +-config=MC3A2.R2.1,+reports={safe,"first_area(^.*incompatible with labeled statement$)"} -doc_end -doc_begin="Some functions are intended to be not referenced." --config=MC3R1.R2.1,+reports={deliberate,"first_area(^.*is never referenced$)"} +-config=MC3A2.R2.1,+reports={deliberate,"first_area(^.*is never referenced$)"} -doc_end -doc_begin="Unreachability caused by calls to the following functions or macros is deliberate and there is no risk of code being unexpectedly left out." --config=MC3R1.R2.1,statements+={deliberate,"macro(name(BUG||assert_failed))"} --config=MC3R1.R2.1,statements+={deliberate, "call(decl(name(__builtin_unreachable||panic||do_unexpected_trap||machine_halt||machine_restart||reboot_or_halt)))"} +-config=MC3A2.R2.1,statements+={deliberate,"macro(name(BUG||assert_failed))"} +-config=MC3A2.R2.1,statements+={deliberate, "call(decl(name(__builtin_unreachable||panic||do_unexpected_trap||machine_halt||machine_restart||reboot_or_halt)))"} -doc_end -doc_begin="Unreachability inside an ASSERT_UNREACHABLE() and analogous macro calls is deliberate and safe." --config=MC3R1.R2.1,reports+={deliberate, "any_area(any_loc(any_exp(macro(name(ASSERT_UNREACHABLE||PARSE_ERR_RET||PARSE_ERR||FAIL_MSR||FAIL_CPUID)))))"} +-config=MC3A2.R2.1,reports+={deliberate, "any_area(any_loc(any_exp(macro(name(ASSERT_UNREACHABLE||PARSE_ERR_RET||PARSE_ERR||FAIL_MSR||FAIL_CPUID)))))"} -doc_end -doc_begin="The asm-offset files are not linked deliberately, since they are used to generate definitions for asm modules." -file_tag+={asm_offsets, "^xen/arch/(arm|x86)/(arm32|arm64|x86_64)/asm-offsets\\.c$"} --config=MC3R1.R2.1,reports+={deliberate, "any_area(any_loc(file(asm_offsets)))"} +-config=MC3A2.R2.1,reports+={deliberate, "any_area(any_loc(file(asm_offsets)))"} -doc_end -doc_begin="Pure declarations (i.e., declarations without initialization) are not executable, and therefore it is safe for them to be unreachable." --config=MC3R1.R2.1,ignored_stmts+={"any()", "pure_decl()"} +-config=MC3A2.R2.1,ignored_stmts+={"any()", "pure_decl()"} -doc_end -doc_begin="The following autogenerated file is not linked deliberately." -file_tag+={C_runtime_failures,"^automation/eclair_analysis/C-runtime-failures\\.rst\\.c$"} --config=MC3R1.R2.1,reports+={deliberate, "any_area(any_loc(file(C_runtime_failures)))"} +-config=MC3A2.R2.1,reports+={deliberate, "any_area(any_loc(file(C_runtime_failures)))"} -doc_end -doc_begin="Proving compliance with respect to Rule 2.2 is generally impossible: @@ -42,11 +42,11 @@ confidence that no evidence of errors in the program's logic has been missed due to undetected violations of Rule 2.2, if any. Testing on time behavior gives us confidence on the fact that, should the program contain dead code that is not removed by the compiler, the resulting slowdown is negligible." --config=MC3R1.R2.2,reports+={disapplied,"any()"} +-config=MC3A2.R2.2,reports+={disapplied,"any()"} -doc_end -doc_begin="Some labels are unused in certain build configurations, or are deliberately marked as unused, so that the compiler is entitled to remove them." --config=MC3R1.R2.6,reports+={deliberate, "any_area(text(^.*__maybe_unused.*$))"} +-config=MC3A2.R2.6,reports+={deliberate, "any_area(text(^.*__maybe_unused.*$))"} -doc_end # @@ -55,7 +55,7 @@ removed by the compiler, the resulting slowdown is negligible." -doc_begin="Comments starting with '/*' and containing hyperlinks are safe as they are not instances of commented-out code." --config=MC3R1.R3.1,reports+={safe, "first_area(text(^.*https?://.*$))"} +-config=MC3A2.R3.1,reports+={safe, "first_area(text(^.*https?://.*$))"} -doc_end # @@ -63,26 +63,26 @@ they are not instances of commented-out code." # -doc_begin="The directive has been accepted only for the ARM codebase." --config=MC3R1.D4.3,reports+={disapplied,"!(any_area(any_loc(file(^xen/arch/arm/arm64/.*$))))"} +-config=MC3A2.D4.3,reports+={disapplied,"!(any_area(any_loc(file(^xen/arch/arm/arm64/.*$))))"} -doc_end -doc_begin="The inline asm in 'arm64/lib/bitops.c' is tightly coupled with the surronding C code that acts as a wrapper, so it has been decided not to add an additional encapsulation layer." -file_tag+={arm64_bitops, "^xen/arch/arm/arm64/lib/bitops\\.c$"} --config=MC3R1.D4.3,reports+={deliberate, "all_area(any_loc(file(arm64_bitops)&&any_exp(macro(^(bit|test)op$))))"} --config=MC3R1.D4.3,reports+={deliberate, "any_area(any_loc(file(arm64_bitops))&&context(name(int_clear_mask16)))"} +-config=MC3A2.D4.3,reports+={deliberate, "all_area(any_loc(file(arm64_bitops)&&any_exp(macro(^(bit|test)op$))))"} +-config=MC3A2.D4.3,reports+={deliberate, "any_area(any_loc(file(arm64_bitops))&&context(name(int_clear_mask16)))"} -doc_end -doc_begin="This header file is autogenerated or empty, therefore it poses no risk if included more than once." -file_tag+={empty_header, "^xen/arch/arm/efi/runtime\\.h$"} -file_tag+={autogen_headers, "^xen/include/xen/compile\\.h$||^xen/include/generated/autoconf.h$||^xen/include/xen/hypercall-defs.h$"} --config=MC3R1.D4.10,reports+={safe, "all_area(all_loc(file(empty_header||autogen_headers)))"} +-config=MC3A2.D4.10,reports+={safe, "all_area(all_loc(file(empty_header||autogen_headers)))"} -doc_end -doc_begin="Files that are intended to be included more than once do not need to conform to the directive." --config=MC3R1.D4.10,reports+={safe, "first_area(text(^/\\* This file is legitimately included multiple times\\. \\*/$, begin-4))"} --config=MC3R1.D4.10,reports+={safe, "first_area(text(^/\\* Generated file, do not edit! \\*/$, begin-3))"} +-config=MC3A2.D4.10,reports+={safe, "first_area(text(^/\\* This file is legitimately included multiple times\\. \\*/$, begin-4))"} +-config=MC3A2.D4.10,reports+={safe, "first_area(text(^/\\* Generated file, do not edit! \\*/$, begin-3))"} -doc_end # @@ -91,50 +91,50 @@ conform to the directive." -doc_begin="The project adopted the rule with an exception listed in 'docs/misra/rules.rst'" --config=MC3R1.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^READ_SYSREG$))&&any_exp(macro(^WRITE_SYSREG$))))"} --config=MC3R1.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^max(_t)?$))&&any_exp(macro(^min(_t)?$))))"} --config=MC3R1.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^read[bwlq]$))&&any_exp(macro(^read[bwlq]_relaxed$))))"} --config=MC3R1.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^per_cpu$))&&any_exp(macro(^this_cpu$))))"} --config=MC3R1.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^__emulate_2op$))&&any_exp(macro(^__emulate_2op_nobyte$))))"} --config=MC3R1.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^read_debugreg$))&&any_exp(macro(^write_debugreg$))))"} +-config=MC3A2.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^READ_SYSREG$))&&any_exp(macro(^WRITE_SYSREG$))))"} +-config=MC3A2.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^max(_t)?$))&&any_exp(macro(^min(_t)?$))))"} +-config=MC3A2.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^read[bwlq]$))&&any_exp(macro(^read[bwlq]_relaxed$))))"} +-config=MC3A2.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^per_cpu$))&&any_exp(macro(^this_cpu$))))"} +-config=MC3A2.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^__emulate_2op$))&&any_exp(macro(^__emulate_2op_nobyte$))))"} +-config=MC3A2.R5.3,reports+={safe, "any_area(any_loc(any_exp(macro(^read_debugreg$))&&any_exp(macro(^write_debugreg$))))"} -doc_end -doc_begin="Macros expanding to their own identifier (e.g., \"#define x x\") are deliberate." --config=MC3R1.R5.5,reports+={deliberate, "all_area(macro(same_id_body())||!macro(!same_id_body()))"} +-config=MC3A2.R5.5,reports+={deliberate, "all_area(macro(same_id_body())||!macro(!same_id_body()))"} -doc_end -doc_begin="There is no clash between function like macros and not callable objects." --config=MC3R1.R5.5,reports+={deliberate, "all_area(macro(function_like())||decl(any()))&&all_area(macro(any())||!decl(kind(function))&&!decl(__function_pointer_decls))"} +-config=MC3A2.R5.5,reports+={deliberate, "all_area(macro(function_like())||decl(any()))&&all_area(macro(any())||!decl(kind(function))&&!decl(__function_pointer_decls))"} -doc_end -doc_begin="Clashes between function names and macros are deliberate for string handling functions since some architectures may want to use their own arch-specific implementation." --config=MC3R1.R5.5,reports+={deliberate, "all_area(all_loc(file(^xen/arch/x86/string\\.c|xen/include/xen/string\\.h|xen/lib/.*$)))"} +-config=MC3A2.R5.5,reports+={deliberate, "all_area(all_loc(file(^xen/arch/x86/string\\.c|xen/include/xen/string\\.h|xen/lib/.*$)))"} -doc_end -doc_begin="In libelf, clashes between macros and function names are deliberate and needed to prevent the use of undecorated versions of memcpy, memset and memmove." --config=MC3R1.R5.5,reports+={deliberate, "any_area(decl(kind(function))||any_loc(macro(name(memcpy||memset||memmove))))&&any_area(any_loc(file(^xen/common/libelf/libelf-private\\.h$)))"} +-config=MC3A2.R5.5,reports+={deliberate, "any_area(decl(kind(function))||any_loc(macro(name(memcpy||memset||memmove))))&&any_area(any_loc(file(^xen/common/libelf/libelf-private\\.h$)))"} -doc_end -doc_begin="The type \"ret_t\" is deliberately defined multiple times, depending on the guest." --config=MC3R1.R5.6,reports+={deliberate,"any_area(any_loc(text(^.*ret_t.*$)))"} +-config=MC3A2.R5.6,reports+={deliberate,"any_area(any_loc(text(^.*ret_t.*$)))"} -doc_end -doc_begin="On X86, the types \"guest_intpte_t\", \"guest_l1e_t\" and \"guest_l2e_t\" are deliberately defined multiple times, depending on the number of guest paging levels." --config=MC3R1.R5.6,reports+={deliberate,"any_area(any_loc(file(^xen/arch/x86/include/asm/guest_pt\\.h$)))&&any_area(any_loc(text(^.*(guest_intpte_t|guest_l[12]e_t).*$)))"} +-config=MC3A2.R5.6,reports+={deliberate,"any_area(any_loc(file(^xen/arch/x86/include/asm/guest_pt\\.h$)))&&any_area(any_loc(text(^.*(guest_intpte_t|guest_l[12]e_t).*$)))"} -doc_end -doc_begin="The following files are imported from the gnu-efi package." -file_tag+={adopted_r5_6,"^xen/include/efi/.*$"} -file_tag+={adopted_r5_6,"^xen/arch/.*/include/asm/.*/efibind\\.h$"} --config=MC3R1.R5.6,reports+={deliberate,"any_area(any_loc(file(adopted_r5_6)))"} +-config=MC3A2.R5.6,reports+={deliberate,"any_area(any_loc(file(adopted_r5_6)))"} -doc_end -doc_begin="The project intentionally reuses tag names in order to have identifiers matching the applicable external specifications as well as established internal conventions. As there is little possibility for developer confusion not resulting into compilation errors, the risk of renaming outweighs the potential advantages of compliance." --config=MC3R1.R5.7,reports+={deliberate,"any()"} +-config=MC3A2.R5.7,reports+={deliberate,"any()"} -doc_end # @@ -143,7 +143,7 @@ As there is little possibility for developer confusion not resulting into compil -doc_begin="It is safe to use certain octal constants the way they are defined in specifications, manuals, and algorithm descriptions." --config=MC3R1.R7.1,reports+={safe, "any_area(any_loc(any_exp(text(^.*octal-ok.*$))))"} +-config=MC3A2.R7.1,reports+={safe, "any_area(any_loc(any_exp(text(^.*octal-ok.*$))))"} -doc_end -doc_begin="Violations in files that maintainers have asked to not modify in the @@ -156,17 +156,17 @@ context of R7.2." -file_tag+={adopted_r7_2,"^xen/arch/x86/cpu/intel\\.c$"} -file_tag+={adopted_r7_2,"^xen/arch/x86/cpu/amd\\.c$"} -file_tag+={adopted_r7_2,"^xen/arch/x86/cpu/common\\.c$"} --config=MC3R1.R7.2,reports+={deliberate,"any_area(any_loc(file(adopted_r7_2)))"} +-config=MC3A2.R7.2,reports+={deliberate,"any_area(any_loc(file(adopted_r7_2)))"} -doc_end -doc_begin="Violations caused by __HYPERVISOR_VIRT_START are related to the particular use of it done in xen_mk_ulong." --config=MC3R1.R7.2,reports+={deliberate,"any_area(any_loc(macro(name(BUILD_BUG_ON))))"} +-config=MC3A2.R7.2,reports+={deliberate,"any_area(any_loc(macro(name(BUILD_BUG_ON))))"} -doc_end -doc_begin="Allow pointers of non-character type as long as the pointee is const-qualified." --config=MC3R1.R7.4,same_pointee=false +-config=MC3A2.R7.4,same_pointee=false -doc_end # @@ -174,7 +174,7 @@ const-qualified." # -doc_begin="The type ret_t is deliberately used and defined as int or long depending on the architecture." --config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(text(^.*ret_t.*$)))"} +-config=MC3A2.R8.3,reports+={deliberate,"any_area(any_loc(text(^.*ret_t.*$)))"} -doc_end -doc_begin="The following files are imported from Linux and decompress.h defines a unique and documented interface towards all the (adopted) decompress functions." @@ -184,71 +184,71 @@ const-qualified." -file_tag+={adopted_decompress_r8_3,"^xen/common/unlzo\\.c$"} -file_tag+={adopted_decompress_r8_3,"^xen/common/unxz\\.c$"} -file_tag+={adopted_decompress_r8_3,"^xen/common/unzstd\\.c$"} --config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_decompress_r8_3)))&&any_area(any_loc(file(^xen/include/xen/decompress\\.h$)))"} +-config=MC3A2.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_decompress_r8_3)))&&any_area(any_loc(file(^xen/include/xen/decompress\\.h$)))"} -doc_end -doc_begin="Parameter name \"unused\" (with an optional numeric suffix) is deliberate and makes explicit the intention of not using such parameter within the function." --config=MC3R1.R8.3,reports+={deliberate, "any_area(^.*parameter `unused[0-9]*'.*$)"} +-config=MC3A2.R8.3,reports+={deliberate, "any_area(^.*parameter `unused[0-9]*'.*$)"} -doc_end -doc_begin="The following file is imported from Linux: ignore for now." -file_tag+={adopted_time_r8_3,"^xen/arch/x86/time\\.c$"} --config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_time_r8_3)))&&(any_area(any_loc(file(^xen/include/xen/time\\.h$)))||any_area(any_loc(file(^xen/arch/x86/include/asm/setup\\.h$))))"} +-config=MC3A2.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_time_r8_3)))&&(any_area(any_loc(file(^xen/include/xen/time\\.h$)))||any_area(any_loc(file(^xen/arch/x86/include/asm/setup\\.h$))))"} -doc_end -doc_begin="The following file is imported from Linux: ignore for now." -file_tag+={adopted_cpu_idle_r8_3,"^xen/arch/x86/acpi/cpu_idle\\.c$"} --config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_cpu_idle_r8_3)))&&any_area(any_loc(file(^xen/include/xen/pmstat\\.h$)))"} +-config=MC3A2.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_cpu_idle_r8_3)))&&any_area(any_loc(file(^xen/include/xen/pmstat\\.h$)))"} -doc_end -doc_begin="The following file is imported from Linux: ignore for now." -file_tag+={adopted_mpparse_r8_3,"^xen/arch/x86/mpparse\\.c$"} --config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_mpparse_r8_3)))&&any_area(any_loc(file(^xen/arch/x86/include/asm/mpspec\\.h$)))"} +-config=MC3A2.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_mpparse_r8_3)))&&any_area(any_loc(file(^xen/arch/x86/include/asm/mpspec\\.h$)))"} -doc_end -doc_begin="The definitions present in this file are meant to generate definitions for asm modules, and are not called by C code. Therefore the absence of prior declarations is safe." -file_tag+={asm_offsets, "^xen/arch/(arm|x86)/(arm32|arm64|x86_64)/asm-offsets\\.c$"} --config=MC3R1.R8.4,reports+={safe, "first_area(any_loc(file(asm_offsets)))"} +-config=MC3A2.R8.4,reports+={safe, "first_area(any_loc(file(asm_offsets)))"} -doc_end -doc_begin="The functions defined in this file are meant to be called from gcc-generated code in a non-release build configuration. Therefore the absence of prior declarations is safe." -file_tag+={gcov, "^xen/common/coverage/gcov_base\\.c$"} --config=MC3R1.R8.4,reports+={safe, "first_area(any_loc(file(gcov)))"} +-config=MC3A2.R8.4,reports+={safe, "first_area(any_loc(file(gcov)))"} -doc_end -doc_begin="Recognize the occurrence of current_stack_pointer as a declaration." -file_tag+={asm_defns, "^xen/arch/x86/include/asm/asm_defns\\.h$"} --config=MC3R1.R8.4,declarations+={safe, "loc(file(asm_defns))&&^current_stack_pointer$"} +-config=MC3A2.R8.4,declarations+={safe, "loc(file(asm_defns))&&^current_stack_pointer$"} -doc_end -doc_begin="The function apei_(read|check|clear)_mce are dead code and are excluded from non-debug builds, therefore the absence of prior declarations is safe." --config=MC3R1.R8.4,declarations+={safe, "^apei_(read|check|clear)_mce\\(.*$"} +-config=MC3A2.R8.4,declarations+={safe, "^apei_(read|check|clear)_mce\\(.*$"} -doc_end -doc_begin="asmlinkage is a marker to indicate that the function is only used to interface with asm modules." --config=MC3R1.R8.4,declarations+={safe,"loc(text(^(?s).*asmlinkage.*$, -1..0))"} +-config=MC3A2.R8.4,declarations+={safe,"loc(text(^(?s).*asmlinkage.*$, -1..0))"} -doc_end -doc_begin="Given that bsearch and sort are defined with the attribute 'gnu_inline', it's deliberate not to have a prior declaration. See Section \"6.33.1 Common Function Attributes\" of \"GCC_MANUAL\" for a full explanation of gnu_inline." -file_tag+={bsearch_sort, "^xen/include/xen/(sort|lib)\\.h$"} --config=MC3R1.R8.4,reports+={deliberate, "any_area(any_loc(file(bsearch_sort))&&decl(name(bsearch||sort)))"} +-config=MC3A2.R8.4,reports+={deliberate, "any_area(any_loc(file(bsearch_sort))&&decl(name(bsearch||sort)))"} -doc_end -doc_begin="first_valid_mfn is defined in this way because the current lack of NUMA support in Arm and PPC requires it." -file_tag+={first_valid_mfn, "^xen/common/page_alloc\\.c$"} --config=MC3R1.R8.4,declarations+={deliberate,"loc(file(first_valid_mfn))"} +-config=MC3A2.R8.4,declarations+={deliberate,"loc(file(first_valid_mfn))"} -doc_end -doc_begin="The following variables are compiled in multiple translation units belonging to different executables and therefore are safe." --config=MC3R1.R8.6,declarations+={safe, "name(current_stack_pointer||bsearch||sort)"} +-config=MC3A2.R8.6,declarations+={safe, "name(current_stack_pointer||bsearch||sort)"} -doc_end -doc_begin="Declarations without definitions are allowed (specifically when the definition is compiled-out or optimized-out by the compiler)" --config=MC3R1.R8.6,reports+={deliberate, "first_area(^.*has no definition$)"} +-config=MC3A2.R8.6,reports+={deliberate, "first_area(^.*has no definition$)"} -doc_end -doc_begin="The search procedure for Unix linkers is well defined, see ld(1) @@ -259,11 +259,11 @@ the linker will include the appropriate file(s) from the archive\". In Xen, thanks to the order in which file names appear in the build commands, if arch-specific definitions are present, they get always linked in before searching in the lib.a archive resulting from xen/lib." --config=MC3R1.R8.6,declarations+={deliberate, "loc(file(^xen/lib/.*$))"} +-config=MC3A2.R8.6,declarations+={deliberate, "loc(file(^xen/lib/.*$))"} -doc_end -doc_begin="The gnu_inline attribute without static is deliberately allowed." --config=MC3R1.R8.10,declarations+={deliberate,"property(gnu_inline)"} +-config=MC3A2.R8.10,declarations+={deliberate,"property(gnu_inline)"} -doc_end # @@ -273,12 +273,12 @@ searching in the lib.a archive resulting from xen/lib." -doc_begin="Violations in files that maintainers have asked to not modify in the context of R9.1." -file_tag+={adopted_r9_1,"^xen/arch/arm/arm64/lib/find_next_bit\\.c$"} --config=MC3R1.R9.1,reports+={deliberate,"any_area(any_loc(file(adopted_r9_1)))"} +-config=MC3A2.R9.1,reports+={deliberate,"any_area(any_loc(file(adopted_r9_1)))"} -doc_end -doc_begin="The possibility of committing mistakes by specifying an explicit dimension is higher than omitting the dimension." --config=MC3R1.R9.5,reports+={deliberate, "any()"} +-config=MC3A2.R9.5,reports+={deliberate, "any()"} -doc_end # @@ -286,45 +286,45 @@ dimension is higher than omitting the dimension." # -doc_begin="The value-preserving conversions of integer constants are safe" --config=MC3R1.R10.1,etypes={safe,"any()","preserved_integer_constant()"} --config=MC3R1.R10.3,etypes={safe,"any()","preserved_integer_constant()"} --config=MC3R1.R10.4,etypes={safe,"any()","preserved_integer_constant()||sibling(rhs,preserved_integer_constant())"} +-config=MC3A2.R10.1,etypes={safe,"any()","preserved_integer_constant()"} +-config=MC3A2.R10.3,etypes={safe,"any()","preserved_integer_constant()"} +-config=MC3A2.R10.4,etypes={safe,"any()","preserved_integer_constant()||sibling(rhs,preserved_integer_constant())"} -doc_end -doc_begin="Shifting non-negative integers to the right is safe." --config=MC3R1.R10.1,etypes+={safe, +-config=MC3A2.R10.1,etypes+={safe, "stmt(node(binary_operator)&&operator(shr))", "src_expr(definitely_in(0..))"} -doc_end -doc_begin="Shifting non-negative integers to the left is safe if the result is still non-negative." --config=MC3R1.R10.1,etypes+={safe, +-config=MC3A2.R10.1,etypes+={safe, "stmt(node(binary_operator)&&operator(shl)&&definitely_in(0..))", "src_expr(definitely_in(0..))"} -doc_end -doc_begin="Bitwise logical operations on non-negative integers are safe." --config=MC3R1.R10.1,etypes+={safe, +-config=MC3A2.R10.1,etypes+={safe, "stmt(node(binary_operator)&&operator(and||or||xor))", "src_expr(definitely_in(0..))"} -doc_end -doc_begin="The implicit conversion to Boolean for logical operator arguments is well known to all Xen developers to be a comparison with 0" --config=MC3R1.R10.1,etypes+={safe, "stmt(operator(logical)||node(conditional_operator||binary_conditional_operator))", "dst_type(ebool||boolean)"} +-config=MC3A2.R10.1,etypes+={safe, "stmt(operator(logical)||node(conditional_operator||binary_conditional_operator))", "dst_type(ebool||boolean)"} -doc_end -doc_begin="The macro ISOLATE_LSB encapsulates a well-known pattern to obtain a mask where only the lowest bit set in the argument is set, if any, for unsigned integers arguments on two's complement architectures (all the architectures supported by Xen satisfy this requirement)." --config=MC3R1.R10.1,reports+={safe, "any_area(any_loc(any_exp(macro(^ISOLATE_LSB$))))"} +-config=MC3A2.R10.1,reports+={safe, "any_area(any_loc(any_exp(macro(^ISOLATE_LSB$))))"} -doc_end -doc_begin="XEN only supports architectures where signed integers are representend using two's complement and all the XEN developers are aware of this." --config=MC3R1.R10.1,etypes+={safe, +-config=MC3A2.R10.1,etypes+={safe, "stmt(operator(and||or||xor||not||and_assign||or_assign||xor_assign))", "any()"} -doc_end @@ -335,7 +335,7 @@ C language, GCC does not use the latitude given in C99 and C11 only to treat certain aspects of signed `<<' as undefined. However, -fsanitize=shift (and -fsanitize=undefined) will diagnose such cases. They are also diagnosed where constant expressions are required.\"" --config=MC3R1.R10.1,etypes+={safe, +-config=MC3A2.R10.1,etypes+={safe, "stmt(operator(shl||shr||shl_assign||shr_assign))", "any()"} -doc_end @@ -345,7 +345,7 @@ constant expressions are required.\"" # -doc_begin="The conversion from a function pointer to unsigned long or (void *) does not lose any information, provided that the target type has enough bits to store it." --config=MC3R1.R11.1,casts+={safe, +-config=MC3A2.R11.1,casts+={safe, "from(type(canonical(__function_pointer_types))) &&to(type(canonical(builtin(unsigned long)||pointer(builtin(void))))) &&relation(definitely_preserves_value)" @@ -353,14 +353,14 @@ constant expressions are required.\"" -doc_end -doc_begin="The conversion from a function pointer to a boolean has a well-known semantics that do not lead to unexpected behaviour." --config=MC3R1.R11.1,casts+={safe, +-config=MC3A2.R11.1,casts+={safe, "from(type(canonical(__function_pointer_types))) &&kind(pointer_to_boolean)" } -doc_end -doc_begin="The conversion from a pointer to an incomplete type to unsigned long does not lose any information, provided that the target type has enough bits to store it." --config=MC3R1.R11.2,casts+={safe, +-config=MC3A2.R11.2,casts+={safe, "from(type(any())) &&to(type(canonical(builtin(unsigned long)))) &&relation(definitely_preserves_value)" @@ -368,20 +368,20 @@ constant expressions are required.\"" -doc_end -doc_begin="Conversions to object pointers that have a pointee type with a smaller (i.e., less strict) alignment requirement are safe." --config=MC3R1.R11.3,casts+={safe, +-config=MC3A2.R11.3,casts+={safe, "!relation(more_aligned_pointee)" } -doc_end -doc_begin="Conversions from and to integral types are safe, in the assumption that the target type has enough bits to store the value. See also Section \"4.7 Arrays and Pointers\" of \"GCC_MANUAL\"" --config=MC3R1.R11.6,casts+={safe, +-config=MC3A2.R11.6,casts+={safe, "(from(type(canonical(integral())))||to(type(canonical(integral())))) &&relation(definitely_preserves_value)"} -doc_end -doc_begin="The conversion from a pointer to a boolean has a well-known semantics that do not lead to unexpected behaviour." --config=MC3R1.R11.6,casts+={safe, +-config=MC3A2.R11.6,casts+={safe, "from(type(canonical(__pointer_types))) &&kind(pointer_to_boolean)" } @@ -391,11 +391,11 @@ See also Section \"4.7 Arrays and Pointers\" of \"GCC_MANUAL\"" with the provided offset. The resulting pointer is then immediately cast back to its original type, which preserves the qualifier. This use is deemed safe. Fixing this violation would require to increase code complexity and lower readability." --config=MC3R1.R11.8,reports+={safe,"any_area(any_loc(any_exp(macro(^container_of$))))"} +-config=MC3A2.R11.8,reports+={safe,"any_area(any_loc(any_exp(macro(^container_of$))))"} -doc_end -doc_begin="This construct is used to check if the type is scalar, and for this purpose the use of 0 as a null pointer constant is deliberate." --config=MC3R1.R11.9,reports+={deliberate, "any_area(any_loc(any_exp(macro(^__ACCESS_ONCE$))))" +-config=MC3A2.R11.9,reports+={deliberate, "any_area(any_loc(any_exp(macro(^__ACCESS_ONCE$))))" } -doc_end @@ -405,16 +405,16 @@ Fixing this violation would require to increase code complexity and lower readab -doc_begin="All developers and reviewers can be safely assumed to be well aware of the short-circuit evaluation strategy of such logical operators." --config=MC3R1.R13.5,reports+={disapplied,"any()"} +-config=MC3A2.R13.5,reports+={disapplied,"any()"} -doc_end -doc_begin="Macros alternative_v?call[0-9] use sizeof and typeof to check that the argument types match the corresponding parameter ones." --config=MC3R1.R13.6,reports+={deliberate,"any_area(any_loc(any_exp(macro(^alternative_vcall[0-9]$))&&file(^xen/arch/x86/include/asm/alternative\\.h*$)))"} +-config=MC3A2.R13.6,reports+={deliberate,"any_area(any_loc(any_exp(macro(^alternative_vcall[0-9]$))&&file(^xen/arch/x86/include/asm/alternative\\.h*$)))"} -config=B.UNEVALEFF,reports+={deliberate,"any_area(any_loc(any_exp(macro(^alternative_v?call[0-9]$))&&file(^xen/arch/x86/include/asm/alterantive\\.h*$)))"} -doc_end -doc_begin="Anything, no matter how complicated, inside the BUILD_BUG_ON macro is subject to a compile-time evaluation without relevant side effects." --config=MC3R1.R13.6,reports+={safe,"any_area(any_loc(any_exp(macro(name(BUILD_BUG_ON)))))"} +-config=MC3A2.R13.6,reports+={safe,"any_area(any_loc(any_exp(macro(name(BUILD_BUG_ON)))))"} -config=B.UNEVALEFF,reports+={safe,"any_area(any_loc(any_exp(macro(name(BUILD_BUG_ON)))))"} -doc_end @@ -425,31 +425,31 @@ of the short-circuit evaluation strategy of such logical operators." -doc_begin="The severe restrictions imposed by this rule on the use of for statements are not balanced by the presumed facilitation of the peer review activity." --config=MC3R1.R14.2,reports+={disapplied,"any()"} +-config=MC3A2.R14.2,reports+={disapplied,"any()"} -doc_end -doc_begin="The XEN team relies on the fact that invariant conditions of 'if' statements and conditional operators are deliberate" --config=MC3R1.R14.3,statements+={deliberate, "wrapped(any(),node(if_stmt||conditional_operator||binary_conditional_operator))" } +-config=MC3A2.R14.3,statements+={deliberate, "wrapped(any(),node(if_stmt||conditional_operator||binary_conditional_operator))" } -doc_end -doc_begin="Switches having a 'sizeof' operator as the condition are deliberate and have limited scope." --config=MC3R1.R14.3,statements+={deliberate, "wrapped(any(),node(switch_stmt)&&child(cond, operator(sizeof)))" } +-config=MC3A2.R14.3,statements+={deliberate, "wrapped(any(),node(switch_stmt)&&child(cond, operator(sizeof)))" } -doc_end -doc_begin="The use of an invariant size argument in {put,get}_unsafe_size and array_access_ok, as defined in arch/x86(_64)?/include/asm/uaccess.h is deliberate and is deemed safe." -file_tag+={x86_uaccess, "^xen/arch/x86(_64)?/include/asm/uaccess\\.h$"} --config=MC3R1.R14.3,reports+={deliberate, "any_area(any_loc(file(x86_uaccess)&&any_exp(macro(^(put|get)_unsafe_size$))))"} --config=MC3R1.R14.3,reports+={deliberate, "any_area(any_loc(file(x86_uaccess)&&any_exp(macro(^array_access_ok$))))"} +-config=MC3A2.R14.3,reports+={deliberate, "any_area(any_loc(file(x86_uaccess)&&any_exp(macro(^(put|get)_unsafe_size$))))"} +-config=MC3A2.R14.3,reports+={deliberate, "any_area(any_loc(file(x86_uaccess)&&any_exp(macro(^array_access_ok$))))"} -doc_end -doc_begin="A controlling expression of 'if' and iteration statements having integer, character or pointer type has a semantics that is well-known to all Xen developers." --config=MC3R1.R14.4,etypes+={deliberate, "any()", "src_type(integer||character)||src_expr(type(desugar(pointer(any()))))"} +-config=MC3A2.R14.4,etypes+={deliberate, "any()", "src_type(integer||character)||src_expr(type(desugar(pointer(any()))))"} -doc_end -doc_begin="The XEN team relies on the fact that the enum is_dying has the constant with assigned value 0 act as false and the other ones as true, therefore have the same behavior of a boolean" --config=MC3R1.R14.4,etypes+={deliberate, "stmt(child(cond,child(expr,ref(^<?domain>?::is_dying$))))","src_type(enum)"} +-config=MC3A2.R14.4,etypes+={deliberate, "stmt(child(cond,child(expr,ref(^<?domain>?::is_dying$))))","src_type(enum)"} -doc_end # @@ -460,43 +460,43 @@ therefore have the same behavior of a boolean" therefore it is deemed better to leave such files as is." -file_tag+={x86_emulate,"^xen/arch/x86/x86_emulate/.*$"} -file_tag+={x86_svm_emulate,"^xen/arch/x86/hvm/svm/emulate\\.c$"} --config=MC3R1.R16.2,reports+={deliberate, "any_area(any_loc(file(x86_emulate||x86_svm_emulate)))"} +-config=MC3A2.R16.2,reports+={deliberate, "any_area(any_loc(file(x86_emulate||x86_svm_emulate)))"} -doc_end -doc_begin="Switch clauses ending with continue, goto, return statements are safe." --config=MC3R1.R16.3,terminals+={safe, "node(continue_stmt||goto_stmt||return_stmt)"} +-config=MC3A2.R16.3,terminals+={safe, "node(continue_stmt||goto_stmt||return_stmt)"} -doc_end -doc_begin="Switch clauses ending with a call to a function that does not give the control back (i.e., a function with attribute noreturn) are safe." --config=MC3R1.R16.3,terminals+={safe, "call(property(noreturn))"} +-config=MC3A2.R16.3,terminals+={safe, "call(property(noreturn))"} -doc_end -doc_begin="Switch clauses ending with pseudo-keyword \"fallthrough\" are safe." --config=MC3R1.R16.3,reports+={safe, "any_area(end_loc(any_exp(text(/fallthrough;/))))"} +-config=MC3A2.R16.3,reports+={safe, "any_area(end_loc(any_exp(text(/fallthrough;/))))"} -doc_end -doc_begin="Switch clauses ending with failure method \"BUG()\" are safe." --config=MC3R1.R16.3,reports+={safe, "any_area(end_loc(any_exp(text(/BUG\$\$;/))))"} +-config=MC3A2.R16.3,reports+={safe, "any_area(end_loc(any_exp(text(/BUG\$\$;/))))"} -doc_end -doc_begin="Switch clauses not ending with the break statement are safe if an explicit comment indicating the fallthrough intention is present." --config=MC3R1.R16.3,reports+={safe, "any_area(end_loc(any_exp(text(^(?s).*/\\* [fF]all ?through.? \\*/.*$,0..1))))"} +-config=MC3A2.R16.3,reports+={safe, "any_area(end_loc(any_exp(text(^(?s).*/\\* [fF]all ?through.? \\*/.*$,0..1))))"} -doc_end -doc_begin="Switch statements having a controlling expression of enum type deliberately do not have a default case: gcc -Wall enables -Wswitch which warns (and breaks the build as we use -Werror) if one of the enum labels is missing from the switch." --config=MC3R1.R16.4,reports+={deliberate,'any_area(kind(context)&&^.* has no `default.*$&&stmt(node(switch_stmt)&&child(cond,skip(__non_syntactic_paren_stmts,type(canonical(enum_underlying_type(any())))))))'} +-config=MC3A2.R16.4,reports+={deliberate,'any_area(kind(context)&&^.* has no `default.*$&&stmt(node(switch_stmt)&&child(cond,skip(__non_syntactic_paren_stmts,type(canonical(enum_underlying_type(any())))))))'} -doc_end -doc_begin="A switch statement with a single switch clause and no default label may be used in place of an equivalent if statement if it is considered to improve readability." --config=MC3R1.R16.4,switch_clauses+={deliberate,"switch(1)&&default(0)"} +-config=MC3A2.R16.4,switch_clauses+={deliberate,"switch(1)&&default(0)"} -doc_end -doc_begin="A switch statement with a single switch clause and no default label may be used in place of an equivalent if statement if it is considered to improve readability." --config=MC3R1.R16.6,switch_clauses+={deliberate, "default(0)"} +-config=MC3A2.R16.6,switch_clauses+={deliberate, "default(0)"} -doc_end # @@ -504,16 +504,16 @@ explicit comment indicating the fallthrough intention is present." # -doc_begin="printf()-like functions are allowed to use the variadic features provided by stdarg.h." --config=MC3R1.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(^.*printk\$.*\$$)))"} --config=MC3R1.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(^.*printf\$.*\$$)))"} --config=MC3R1.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(name(panic)&&kind(function))))"} --config=MC3R1.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(name(elf_call_log_callback)&&kind(function))))"} --config=MC3R1.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(name(vprintk_common)&&kind(function))))"} --config=MC3R1.R17.1,macros+={hide , "^va_(arg|start|copy|end)$"} +-config=MC3A2.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(^.*printk\$.*\$$)))"} +-config=MC3A2.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(^.*printf\$.*\$$)))"} +-config=MC3A2.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(name(panic)&&kind(function))))"} +-config=MC3A2.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(name(elf_call_log_callback)&&kind(function))))"} +-config=MC3A2.R17.1,reports+={deliberate,"any_area(^.*va_list.*$&&context(ancestor_or_self(name(vprintk_common)&&kind(function))))"} +-config=MC3A2.R17.1,macros+={hide , "^va_(arg|start|copy|end)$"} -doc_end -doc_begin="Not using the return value of a function does not endanger safety if it coincides with an actual argument." --config=MC3R1.R17.7,calls+={safe, "any()", "decl(name(__builtin_memcpy||__builtin_memmove||__builtin_memset||cpumask_check))"} +-config=MC3A2.R17.7,calls+={safe, "any()", "decl(name(__builtin_memcpy||__builtin_memmove||__builtin_memset||cpumask_check))"} -doc_end # @@ -522,7 +522,7 @@ explicit comment indicating the fallthrough intention is present." -doc_begin="Flexible array members are deliberately used and XEN developers are aware of the dangers related to them: unexpected result when the structure is given as argument to a sizeof() operator and the truncation in assignment between structures." --config=MC3R1.R18.7,reports+={deliberate, "any()"} +-config=MC3A2.R18.7,reports+={deliberate, "any()"} -doc_end # @@ -533,7 +533,7 @@ unexpected result when the structure is given as argument to a sizeof() operator as function arguments; (2) as macro arguments; (3) as array indices; (4) as lhs in assignments; (5) as initializers, possibly designated, in initalizer lists; (6) as the constant expression in a switch clause label." --config=MC3R1.R20.7,expansion_context= +-config=MC3A2.R20.7,expansion_context= {safe, "context(__call_expr_arg_contexts)"}, {safe, "left_right(^[(,\\[]$,^[),\\]]$)"}, {safe, "context(skip_to(__expr_non_syntactic_contexts, stmt_child(node(array_subscript_expr), subscript)))"}, @@ -546,52 +546,52 @@ in assignments; (5) as initializers, possibly designated, in initalizer lists; breaking the macro's logic; futhermore, the macro is only ever used in the context of the IS_ENABLED or STATIC_IF/STATIC_IF_NOT macros, so it always receives a literal 0 or 1 as input, posing no risk to safety." --config=MC3R1.R20.7,reports+={safe, "any_area(any_loc(any_exp(macro(^___config_enabled$))))"} +-config=MC3A2.R20.7,reports+={safe, "any_area(any_loc(any_exp(macro(^___config_enabled$))))"} -doc_end -doc_begin="Violations due to the use of macros defined in files that are not in scope for compliance are allowed, as that is imported code." -file_tag+={gnu_efi_include, "^xen/include/efi/.*$"} -file_tag+={acpi_cpu_idle, "^xen/arch/x86/acpi/cpu_idle\\.c$"} --config=MC3R1.R20.7,reports+={safe, "any_area(any_loc(file(gnu_efi_include)))"} --config=MC3R1.R20.7,reports+={safe, "any_area(any_loc(file(acpi_cpu_idle)))"} +-config=MC3A2.R20.7,reports+={safe, "any_area(any_loc(file(gnu_efi_include)))"} +-config=MC3A2.R20.7,reports+={safe, "any_area(any_loc(file(acpi_cpu_idle)))"} -doc_end -doc_begin="To avoid compromising readability, the macros alternative_(v)?call[0-9] are allowed not to parenthesize their arguments." --config=MC3R1.R20.7,reports+={safe, "any_area(any_loc(any_exp(macro(^alternative_(v)?call[0-9]$))))"} +-config=MC3A2.R20.7,reports+={safe, "any_area(any_loc(any_exp(macro(^alternative_(v)?call[0-9]$))))"} -doc_end -doc_begin="The argument 'x' of the count_args_ macro can't be parenthesized as the rule would require, without breaking the functionality of the macro. The uses of this macro do not lead to developer confusion, and can thus be deviated." --config=MC3R1.R20.7,reports+={safe, "any_area(any_loc(any_exp(macro(^count_args_$))))"} +-config=MC3A2.R20.7,reports+={safe, "any_area(any_loc(any_exp(macro(^count_args_$))))"} -doc_end -doc_begin="Uses of variadic macros that have one of their arguments defined as a macro and used within the body for both ordinary parameter expansion and as an operand to the # or ## operators have a behavior that is well-understood and deliberate." --config=MC3R1.R20.12,macros+={deliberate, "variadic()"} +-config=MC3A2.R20.12,macros+={deliberate, "variadic()"} -doc_end -doc_begin="Uses of a macro parameter for ordinary expansion and as an operand to the # or ## operators within the following macros are deliberate, to provide useful diagnostic messages to the user." --config=MC3R1.R20.12,macros+={deliberate, "name(ASSERT||BUILD_BUG_ON||BUILD_BUG_ON_ZERO||RUNTIME_CHECK)"} +-config=MC3A2.R20.12,macros+={deliberate, "name(ASSERT||BUILD_BUG_ON||BUILD_BUG_ON_ZERO||RUNTIME_CHECK)"} -doc_end -doc_begin="The helper macro GENERATE_CASE may use a macro parameter for ordinary expansion and token pasting to improve readability. Only instances where this leads to a violation of the Rule are deviated." -file_tag+={deliberate_generate_case, "^xen/arch/arm/vcpreg\\.c$"} --config=MC3R1.R20.12,macros+={deliberate, "name(GENERATE_CASE)&&loc(file(deliberate_generate_case))"} +-config=MC3A2.R20.12,macros+={deliberate, "name(GENERATE_CASE)&&loc(file(deliberate_generate_case))"} -doc_end -doc_begin="The macro DEFINE is defined and used in excluded files asm-offsets.c. This may still cause violations if entities outside these files are referred to in the expansion." --config=MC3R1.R20.12,macros+={deliberate, "name(DEFINE)&&loc(file(asm_offsets))"} +-config=MC3A2.R20.12,macros+={deliberate, "name(DEFINE)&&loc(file(asm_offsets))"} -doc_end # @@ -601,7 +601,7 @@ in the expansion." -doc_begin="or, and and xor are reserved identifiers because they constitute alternate spellings for the corresponding operators (they are defined as macros by iso646.h). However, Xen doesn't use standard library headers, so there is no risk of overlap." --config=MC3R1.R21.2,reports+={safe, "any_area(stmt(ref(kind(label)&&^(or|and|xor|not)$)))"} +-config=MC3A2.R21.2,reports+={safe, "any_area(stmt(ref(kind(label)&&^(or|and|xor|not)$)))"} -doc_end -doc_begin="Xen does not use the functions provided by the Standard Library, but @@ -610,8 +610,8 @@ The implementation of these functions is available in source form, so the undefi or implementation-defined behaviors contemplated by the C Standard do not apply. If some undefined or unspecified behavior does arise in the implementation, it falls under the jurisdiction of other MISRA rules." --config=MC3R1.R21.9,reports+={deliberate, "any()"} --config=MC3R1.R21.10,reports+={deliberate, "any()"} +-config=MC3A2.R21.9,reports+={deliberate, "any()"} +-config=MC3A2.R21.10,reports+={deliberate, "any()"} -doc_end # @@ -636,7 +636,7 @@ falls under the jurisdiction of other MISRA rules." programmers:no developers' confusion is not possible. In addition, adopted code is assumed to work as is. Reports that are fully contained in adopted code are hidden/tagged with the 'adopted' tag." 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-config=developer_confusion_guidelines,reports+={relied,adopted_report} -doc_end diff --git a/automation/eclair_analysis/ECLAIR/monitored.ecl b/automation/eclair_analysis/ECLAIR/monitored.ecl index 9ffaebbdc3..464516e780 100644 --- a/automation/eclair_analysis/ECLAIR/monitored.ecl +++ b/automation/eclair_analysis/ECLAIR/monitored.ecl @@ -1,104 +1,104 @@ -doc_begin="A set of guidelines that are clean or that only have few violations left." --enable=MC3R1.D1.1 --enable=MC3R1.D2.1 --enable=MC3R1.D4.1 --enable=MC3R1.D4.10 --enable=MC3R1.D4.11 --enable=MC3R1.D4.12 --enable=MC3R1.D4.14 --enable=MC3R1.D4.3 --enable=MC3R1.D4.7 --enable=MC3R1.R10.1 --enable=MC3R1.R10.2 --enable=MC3R1.R1.1 --enable=MC3R1.R11.1 --enable=MC3R1.R11.7 --enable=MC3R1.R11.8 --enable=MC3R1.R11.9 --enable=MC3R1.R12.5 --enable=MC3R1.R1.3 --enable=MC3R1.R13.6 --enable=MC3R1.R13.1 --enable=MC3R1.R1.4 --enable=MC3R1.R14.1 --enable=MC3R1.R14.4 --enable=MC3R1.R16.2 --enable=MC3R1.R16.3 --enable=MC3R1.R16.4 --enable=MC3R1.R16.6 --enable=MC3R1.R16.7 --enable=MC3R1.R17.1 --enable=MC3R1.R17.3 --enable=MC3R1.R17.4 --enable=MC3R1.R17.5 --enable=MC3R1.R17.6 --enable=MC3R1.R19.1 --enable=MC3R1.R20.12 --enable=MC3R1.R20.13 --enable=MC3R1.R20.14 --enable=MC3R1.R20.4 --enable=MC3R1.R20.7 --enable=MC3R1.R20.9 --enable=MC3R1.R2.1 --enable=MC3R1.R21.10 --enable=MC3R1.R21.13 --enable=MC3R1.R21.17 --enable=MC3R1.R21.18 --enable=MC3R1.R21.19 --enable=MC3R1.R21.20 --enable=MC3R1.R21.21 --enable=MC3R1.R21.9 --enable=MC3R1.R2.2 --enable=MC3R1.R22.2 --enable=MC3R1.R22.4 --enable=MC3R1.R22.5 --enable=MC3R1.R22.6 --enable=MC3R1.R2.6 --enable=MC3R1.R3.1 --enable=MC3R1.R3.2 --enable=MC3R1.R4.1 --enable=MC3R1.R4.2 --enable=MC3R1.R5.1 --enable=MC3R1.R5.2 --enable=MC3R1.R5.3 --enable=MC3R1.R5.4 --enable=MC3R1.R5.5 --enable=MC3R1.R5.6 --enable=MC3R1.R6.1 --enable=MC3R1.R6.2 --enable=MC3R1.R7.1 --enable=MC3R1.R7.2 --enable=MC3R1.R7.3 --enable=MC3R1.R7.4 --enable=MC3R1.R8.1 --enable=MC3R1.R8.10 --enable=MC3R1.R8.12 --enable=MC3R1.R8.14 --enable=MC3R1.R8.2 --enable=MC3R1.R8.3 --enable=MC3R1.R8.4 --enable=MC3R1.R8.5 --enable=MC3R1.R8.6 --enable=MC3R1.R8.8 --enable=MC3R1.R9.2 --enable=MC3R1.R9.3 --enable=MC3R1.R9.4 --enable=MC3R1.R9.5 --enable=MC3R1.R18.8 --enable=MC3R1.R20.2 --enable=MC3R1.R20.3 --enable=MC3R1.R20.6 --enable=MC3R1.R20.11 --enable=MC3R1.R21.3 --enable=MC3R1.R21.4 --enable=MC3R1.R21.5 --enable=MC3R1.R21.7 --enable=MC3R1.R21.8 --enable=MC3R1.R21.12 --enable=MC3R1.R22.1 --enable=MC3R1.R22.3 --enable=MC3R1.R22.7 --enable=MC3R1.R22.8 --enable=MC3R1.R22.9 --enable=MC3R1.R22.10 +-enable=MC3A2.D1.1 +-enable=MC3A2.D2.1 +-enable=MC3A2.D4.1 +-enable=MC3A2.D4.10 +-enable=MC3A2.D4.11 +-enable=MC3A2.D4.12 +-enable=MC3A2.D4.14 +-enable=MC3A2.D4.3 +-enable=MC3A2.D4.7 +-enable=MC3A2.R10.1 +-enable=MC3A2.R10.2 +-enable=MC3A2.R1.1 +-enable=MC3A2.R11.1 +-enable=MC3A2.R11.7 +-enable=MC3A2.R11.8 +-enable=MC3A2.R11.9 +-enable=MC3A2.R12.5 +-enable=MC3A2.R1.3 +-enable=MC3A2.R13.6 +-enable=MC3A2.R13.1 +-enable=MC3A2.R1.4 +-enable=MC3A2.R14.1 +-enable=MC3A2.R14.4 +-enable=MC3A2.R16.2 +-enable=MC3A2.R16.3 +-enable=MC3A2.R16.4 +-enable=MC3A2.R16.6 +-enable=MC3A2.R16.7 +-enable=MC3A2.R17.1 +-enable=MC3A2.R17.3 +-enable=MC3A2.R17.4 +-enable=MC3A2.R17.5 +-enable=MC3A2.R17.6 +-enable=MC3A2.R19.1 +-enable=MC3A2.R20.12 +-enable=MC3A2.R20.13 +-enable=MC3A2.R20.14 +-enable=MC3A2.R20.4 +-enable=MC3A2.R20.7 +-enable=MC3A2.R20.9 +-enable=MC3A2.R2.1 +-enable=MC3A2.R21.10 +-enable=MC3A2.R21.13 +-enable=MC3A2.R21.17 +-enable=MC3A2.R21.18 +-enable=MC3A2.R21.19 +-enable=MC3A2.R21.20 +-enable=MC3A2.R21.21 +-enable=MC3A2.R21.9 +-enable=MC3A2.R2.2 +-enable=MC3A2.R22.2 +-enable=MC3A2.R22.4 +-enable=MC3A2.R22.5 +-enable=MC3A2.R22.6 +-enable=MC3A2.R2.6 +-enable=MC3A2.R3.1 +-enable=MC3A2.R3.2 +-enable=MC3A2.R4.1 +-enable=MC3A2.R4.2 +-enable=MC3A2.R5.1 +-enable=MC3A2.R5.2 +-enable=MC3A2.R5.3 +-enable=MC3A2.R5.4 +-enable=MC3A2.R5.5 +-enable=MC3A2.R5.6 +-enable=MC3A2.R6.1 +-enable=MC3A2.R6.2 +-enable=MC3A2.R7.1 +-enable=MC3A2.R7.2 +-enable=MC3A2.R7.3 +-enable=MC3A2.R7.4 +-enable=MC3A2.R8.1 +-enable=MC3A2.R8.10 +-enable=MC3A2.R8.12 +-enable=MC3A2.R8.14 +-enable=MC3A2.R8.2 +-enable=MC3A2.R8.3 +-enable=MC3A2.R8.4 +-enable=MC3A2.R8.5 +-enable=MC3A2.R8.6 +-enable=MC3A2.R8.8 +-enable=MC3A2.R9.2 +-enable=MC3A2.R9.3 +-enable=MC3A2.R9.4 +-enable=MC3A2.R9.5 +-enable=MC3A2.R18.8 +-enable=MC3A2.R20.2 +-enable=MC3A2.R20.3 +-enable=MC3A2.R20.6 +-enable=MC3A2.R20.11 +-enable=MC3A2.R21.3 +-enable=MC3A2.R21.4 +-enable=MC3A2.R21.5 +-enable=MC3A2.R21.7 +-enable=MC3A2.R21.8 +-enable=MC3A2.R21.12 +-enable=MC3A2.R22.1 +-enable=MC3A2.R22.3 +-enable=MC3A2.R22.7 +-enable=MC3A2.R22.8 +-enable=MC3A2.R22.9 +-enable=MC3A2.R22.10 -doc_end diff --git a/automation/eclair_analysis/ECLAIR/tagging.ecl b/automation/eclair_analysis/ECLAIR/tagging.ecl index b829655ca0..eec1d50f90 100644 --- a/automation/eclair_analysis/ECLAIR/tagging.ecl +++ b/automation/eclair_analysis/ECLAIR/tagging.ecl @@ -20,94 +20,94 @@ -doc_begin="Clean guidelines: new violations for these guidelines are not accepted." -service_selector={clean_guidelines_common, -"MC3R1.D1.1|| -MC3R1.D2.1|| -MC3R1.D4.1|| -MC3R1.D4.11|| -MC3R1.D4.14|| -MC3R1.R1.1|| -MC3R1.R1.3|| -MC3R1.R1.4|| -MC3R1.R2.2|| -MC3R1.R2.6|| -MC3R1.R3.1|| -MC3R1.R3.2|| -MC3R1.R4.1|| -MC3R1.R4.2|| -MC3R1.R5.1|| -MC3R1.R5.2|| -MC3R1.R5.4|| -MC3R1.R5.6|| -MC3R1.R6.1|| -MC3R1.R6.2|| -MC3R1.R7.1|| -MC3R1.R7.2|| -MC3R1.R7.4|| -MC3R1.R8.1|| -MC3R1.R8.2|| -MC3R1.R8.5|| -MC3R1.R8.6|| -MC3R1.R8.8|| -MC3R1.R8.10|| -MC3R1.R8.12|| -MC3R1.R8.14|| -MC3R1.R9.2|| -MC3R1.R9.3|| -MC3R1.R9.4|| -MC3R1.R9.5|| -MC3R1.R10.2|| -MC3R1.R11.7|| -MC3R1.R11.9|| -MC3R1.R12.5|| -MC3R1.R14.1|| -MC3R1.R14.4|| -MC3R1.R16.7|| -MC3R1.R17.1|| -MC3R1.R17.3|| -MC3R1.R17.4|| -MC3R1.R17.5|| -MC3R1.R17.6|| -MC3R1.R18.8|| -MC3R1.R20.2|| -MC3R1.R20.3|| -MC3R1.R20.4|| -MC3R1.R20.6|| -MC3R1.R20.9|| -MC3R1.R20.11|| -MC3R1.R20.12|| -MC3R1.R20.13|| -MC3R1.R20.14|| -MC3R1.R21.3|| -MC3R1.R21.4|| -MC3R1.R21.5|| -MC3R1.R21.7|| -MC3R1.R21.8|| -MC3R1.R21.9|| -MC3R1.R21.10|| -MC3R1.R21.12|| -MC3R1.R21.13|| -MC3R1.R21.19|| -MC3R1.R21.21|| -MC3R1.R22.1|| -MC3R1.R22.2|| -MC3R1.R22.3|| -MC3R1.R22.4|| -MC3R1.R22.5|| -MC3R1.R22.6|| -MC3R1.R22.7|| -MC3R1.R22.8|| -MC3R1.R22.9|| -MC3R1.R22.10" +"MC3A2.D1.1|| +MC3A2.D2.1|| +MC3A2.D4.1|| +MC3A2.D4.11|| +MC3A2.D4.14|| +MC3A2.R1.1|| +MC3A2.R1.3|| +MC3A2.R1.4|| +MC3A2.R2.2|| +MC3A2.R2.6|| +MC3A2.R3.1|| +MC3A2.R3.2|| +MC3A2.R4.1|| +MC3A2.R4.2|| +MC3A2.R5.1|| +MC3A2.R5.2|| +MC3A2.R5.4|| +MC3A2.R5.6|| +MC3A2.R6.1|| +MC3A2.R6.2|| +MC3A2.R7.1|| +MC3A2.R7.2|| +MC3A2.R7.4|| +MC3A2.R8.1|| +MC3A2.R8.2|| +MC3A2.R8.5|| +MC3A2.R8.6|| +MC3A2.R8.8|| +MC3A2.R8.10|| +MC3A2.R8.12|| +MC3A2.R8.14|| +MC3A2.R9.2|| +MC3A2.R9.3|| +MC3A2.R9.4|| +MC3A2.R9.5|| +MC3A2.R10.2|| +MC3A2.R11.7|| +MC3A2.R11.9|| +MC3A2.R12.5|| +MC3A2.R14.1|| +MC3A2.R14.4|| +MC3A2.R16.7|| +MC3A2.R17.1|| +MC3A2.R17.3|| +MC3A2.R17.4|| +MC3A2.R17.5|| +MC3A2.R17.6|| +MC3A2.R18.8|| +MC3A2.R20.2|| +MC3A2.R20.3|| +MC3A2.R20.4|| +MC3A2.R20.6|| +MC3A2.R20.9|| +MC3A2.R20.11|| +MC3A2.R20.12|| +MC3A2.R20.13|| +MC3A2.R20.14|| +MC3A2.R21.3|| +MC3A2.R21.4|| +MC3A2.R21.5|| +MC3A2.R21.7|| +MC3A2.R21.8|| +MC3A2.R21.9|| +MC3A2.R21.10|| +MC3A2.R21.12|| +MC3A2.R21.13|| +MC3A2.R21.19|| +MC3A2.R21.21|| +MC3A2.R22.1|| +MC3A2.R22.2|| +MC3A2.R22.3|| +MC3A2.R22.4|| +MC3A2.R22.5|| +MC3A2.R22.6|| +MC3A2.R22.7|| +MC3A2.R22.8|| +MC3A2.R22.9|| +MC3A2.R22.10" } -setq=target,getenv("XEN_TARGET_ARCH") if(string_equal(target,"x86_64"), - service_selector({"additional_clean_guidelines","MC3R1.D4.3"}) + service_selector({"additional_clean_guidelines","MC3A2.D4.3"}) ) if(string_equal(target,"arm64"), - service_selector({"additional_clean_guidelines","MC3R1.R16.6||MC3R1.R2.1||MC3R1.R5.3||MC3R1.R7.3"}) + service_selector({"additional_clean_guidelines","MC3A2.R16.6||MC3A2.R2.1||MC3A2.R5.3||MC3A2.R7.3"}) ) -reports+={clean:added,"service(clean_guidelines_common||additional_clean_guidelines)"} diff --git a/docs/misra/documenting-violations.rst b/docs/misra/documenting-violations.rst index 8f1cbd83b8..d26377d5aa 100644 --- a/docs/misra/documenting-violations.rst +++ b/docs/misra/documenting-violations.rst @@ -53,7 +53,7 @@ Here is an example to add a new justification in safe.json:: | "analyser": { | "cppcheck": "misra-c2012-20.7", | "coverity": "misra_c_2012_rule_20_7_violation", -| "eclair": "MC3R1.R20.7" +| "eclair": "MC3A2.R20.7" | }, | "name": "R20.7 C macro parameters not used as expression", | "text": "The macro parameters used in this [...]" @@ -138,7 +138,7 @@ for the Rule 8.6: Eclair reports it in its web report, file xen/include/xen/kernel.h, line 68: -| MC3R1.R8.6 for program 'xen/xen-syms', variable '_start' has no definition +| MC3A2.R8.6 for program 'xen/xen-syms', variable '_start' has no definition Also coverity reports it, here is an extract of the finding: @@ -165,7 +165,7 @@ We will prepare our entry in the safe.json database:: | { | "id": "SAF-1-safe", | "analyser": { -| "eclair": "MC3R1.R8.6", +| "eclair": "MC3A2.R8.6", | "coverity": "misra_c_2012_rule_8_6_violation" | }, | "name": "Rule 8.6: linker script defined symbols", diff --git a/docs/misra/safe.json b/docs/misra/safe.json index 3f18ef401c..a3b07d1c0d 100644 --- a/docs/misra/safe.json +++ b/docs/misra/safe.json @@ -4,7 +4,7 @@ { "id": "SAF-0-safe", "analyser": { - "eclair": "MC3R1.R8.6", + "eclair": "MC3A2.R8.6", "coverity": "misra_c_2012_rule_8_6_violation" }, "name": "Rule 8.6: linker script defined symbols", @@ -13,7 +13,7 @@ { "id": "SAF-1-safe", "analyser": { - "eclair": "MC3R1.R8.4" + "eclair": "MC3A2.R8.4" }, "name": "Rule 8.4: asm-only definition", "text": "Functions and variables used only by asm modules do not need to have a visible declaration prior to their definition." @@ -21,23 +21,23 @@ { "id": "SAF-2-safe", "analyser": { - "eclair": "MC3R1.R10.1" + "eclair": "MC3A2.R10.1" }, - "name": "MC3R1.R10.1: use of an enumeration constant in an arithmetic operation", + "name": "MC3A2.R10.1: use of an enumeration constant in an arithmetic operation", "text": "This violation can be fixed with a cast to (int) of the enumeration constant, but a deviation was chosen due to code readability (see also the comment in BITS_TO_LONGS)." }, { "id": "SAF-3-safe", "analyser": { - "eclair": "MC3R1.R20.4" + "eclair": "MC3A2.R20.4" }, - "name": "MC3R1.R20.4: allow the definition of a macro with the same name as a keyword in some special cases", + "name": "MC3A2.R20.4: allow the definition of a macro with the same name as a keyword in some special cases", "text": "The definition of a macro with the same name as a keyword can be useful in certain configurations to improve the guarantees that can be provided by Xen. See docs/misra/deviations.rst for a precise rationale for all such cases." }, { "id": "SAF-4-safe", "analyser": { - "eclair": "MC3R1.R17.1" + "eclair": "MC3A2.R17.1" }, "name": "Rule 17.1: internal helper functions made to break long running hypercalls into multiple calls.", "text": "They need to take a variable number of arguments depending on the original hypercall they are trying to continue." @@ -45,25 +45,25 @@ { "id": "SAF-5-safe", "analyser": { - "eclair": "MC3R1.R16.2" + "eclair": "MC3A2.R16.2" }, - "name": "MC3R1.R16.2: using a case label when the most closely-enclosing compound statement is not a switch statement", + "name": "MC3A2.R16.2: using a case label when the most closely-enclosing compound statement is not a switch statement", "text": "A switch label enclosed by some compound statement that is not the body of a switch is permitted within local helper macros that are unlikely to be misused or misunderstood." }, { "id": "SAF-6-safe", "analyser": { - "eclair": "MC3R1.R20.12" + "eclair": "MC3A2.R20.12" }, - "name": "MC3R1.R20.12: use of a macro argument that deliberately violates the Rule", + "name": "MC3A2.R20.12: use of a macro argument that deliberately violates the Rule", "text": "A macro parameter that is itself a macro is intentionally used within the macro both as a regular parameter and for text replacement." }, { "id": "SAF-7-safe", "analyser": { - "eclair": "MC3R1.R20.7" + "eclair": "MC3A2.R20.7" }, - "name": "MC3R1.R20.7: deliberately non-parenthesized macro argument", + "name": "MC3A2.R20.7: deliberately non-parenthesized macro argument", "text": "A macro parameter expands to an expression that is non-parenthesized, as doing so would break the functionality." }, { -- generated by git-patchbot for /home/xen/git/xen.git#stable-4.19

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