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Tsirkin" , Paolo Bonzini , Marcel Apfelbaum , David Hildenbrand , qemu-s390x@nongnu.org, =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH 01/14] include/hw: add helpers for defining versioned machine types Date: Wed, 1 May 2024 19:27:46 +0100 Message-ID: <20240501182759.2934195-2-berrange@redhat.com> In-Reply-To: <20240501182759.2934195-1-berrange@redhat.com> References: <20240501182759.2934195-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.1 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.897, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1714588164341100001 The various targets which define versioned machine types have a bunch of obfuscated macro code for defining unique function and variable names using string concatenation. This addes a couple of helpers to improve the clarity of such code macro. Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Eric Blake --- include/hw/boards.h | 166 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 166 insertions(+) diff --git a/include/hw/boards.h b/include/hw/boards.h index 2fa800f11a..47ca450fca 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -414,6 +414,172 @@ struct MachineState { struct NumaState *numa_state; }; =20 +/* + * The macros which follow are intended to facilitate the + * definition of versioned machine types, using a somewhat + * similar pattern across targets: + * + * #define DEFINE_VIRT_MACHINE_IMPL(latest, ...) \ + * static void MACHINE_VER_SYM(class_init, virt, __VA_ARGS__)( \ + * ObjectClass *oc, \ + * void *data) \ + * { \ + * MachineClass *mc =3D MACHINE_CLASS(oc); \ + * MACHINE_VER_SYM(options, virt, __VA_ARGS__)(mc); \ + * mc->desc =3D "QEMU " MACHINE_VER_STR(__VA_ARGS__) " Virtual Ma= chine"; \ + * if (latest) { \ + * mc->alias =3D "virt"; \ + * } \ + * } \ + * static const TypeInfo MACHINE_VER_SYM(info, virt, __VA_ARGS__) =3D= { \ + * .name =3D MACHINE_VER_TYPE_NAME("virt", __VA_ARGS__), \ + * .parent =3D TYPE_VIRT_MACHINE, \ + * .class_init =3D MACHINE_VER_SYM(class_init, virt, __VA_ARGS__)= , \ + * }; \ + * static void MACHINE_VER_SYM(register, virt, __VA_ARGS__)(void) \ + * { \ + * type_register_static(&MACHINE_VER_SYM(info, virt, __VA_ARGS__)= ); \ + * } \ + * type_init(MACHINE_VER_SYM(register, virt, __VA_ARGS__)); + * + * Following this, one (or more) helpers can be added for + * whichever scenarios need to be catered for with a machine: + * + * // Normal 2 digit, marked as latest eg 'virt-9.0' + * #define DEFINE_VIRT_MACHINE_LATEST(major, minor) \ + * DEFINE_VIRT_MACHINE_IMPL(true, major, minor) + * + * // Normal 2 digit eg 'virt-9.0' + * #define DEFINE_VIRT_MACHINE(major, minor) \ + * DEFINE_VIRT_MACHINE_IMPL(false, major, minor) + * + * // Bugfix 3 digit eg 'virt-9.0.1' + * #define DEFINE_VIRT_MACHINE_BUGFIX(major, minor, micro) \ + * DEFINE_VIRT_MACHINE_IMPL(false, major, minor, micro) + * + * // Tagged 2 digit eg 'virt-9.0-extra' + * #define DEFINE_VIRT_MACHINE_TAGGED(major, minor, tag) \ + * DEFINE_VIRT_MACHINE_IMPL(false, major, minor, _, tag) + * + * // Tagged bugffix 2 digit eg 'virt-9.0.1-extra' + * #define DEFINE_VIRT_MACHINE_TAGGED(major, minor, micro, tag) \ + * DEFINE_VIRT_MACHINE_IMPL(false, major, minor, micro, _, tag) + */ + +#define _MACHINE_VER_PICK(x1, x2, x3, x4, x5, x6, ...) x6 + +/* + * Construct a human targetted machine version string. + * + * Can be invoked with various signatures + * + * MACHINE_VER_STR(sym, prefix, major, minor) + * MACHINE_VER_STR(sym, prefix, major, minor, micro) + * MACHINE_VER_STR(sym, prefix, major, minor, _, tag) + * MACHINE_VER_STR(sym, prefix, major, minor, micro, _, tag) + * + * Respectively emitting symbols with the format + * + * "{major}.{minor}" + * "{major}.{minor}-{tag}" + * "{major}.{minor}.{micro}" + * "{major}.{minor}.{micro}-{tag}" + */ +#define _MACHINE_VER_STR2(major, minor) \ + #major "." #minor + +#define _MACHINE_VER_STR3(major, minor, micro) \ + #major "." #minor "." #micro + +#define _MACHINE_VER_STR4(major, minor, _unused_, tag) \ + #major "." #minor "-" #tag + +#define _MACHINE_VER_STR5(major, minor, micro, _unused_, tag) \ + #major "." #minor "." #micro "-" #tag + +#define MACHINE_VER_STR(...) \ + _MACHINE_VER_PICK(__VA_ARGS__, \ + _MACHINE_VER_STR5, \ + _MACHINE_VER_STR4, \ + _MACHINE_VER_STR3, \ + _MACHINE_VER_STR2) (__VA_ARGS__) + + +/* + * Construct a QAPI type name for a versioned machine + * type + * + * Can be invoked with various signatures + * + * MACHINE_VER_TYPE_NAME(prefix, major, minor) + * MACHINE_VER_TYPE_NAME(prefix, major, minor, micro) + * MACHINE_VER_TYPE_NAME(prefix, major, minor, _, tag) + * MACHINE_VER_TYPE_NAME(prefix, major, minor, micro, _, tag) + * + * Respectively emitting symbols with the format + * + * "{prefix}-{major}.{minor}" + * "{prefix}-{major}.{minor}.{micro}" + * "{prefix}-{major}.{minor}-{tag}" + * "{prefix}-{major}.{minor}.{micro}-{tag}" + */ +#define _MACHINE_VER_TYPE_NAME2(prefix, major, minor) \ + prefix "-" #major "." #minor TYPE_MACHINE_SUFFIX + +#define _MACHINE_VER_TYPE_NAME3(prefix, major, minor, micro) \ + prefix "-" #major "." #minor "." #micro TYPE_MACHINE_SUFFIX + +#define _MACHINE_VER_TYPE_NAME4(prefix, major, minor, _unused_, tag) \ + prefix "-" #major "." #minor "-" #tag TYPE_MACHINE_SUFFIX + +#define _MACHINE_VER_TYPE_NAME5(prefix, major, minor, micro, _unused_, tag= ) \ + prefix "-" #major "." #minor "." #micro "-" #tag TYPE_MACHINE_SUFFIX + +#define MACHINE_VER_TYPE_NAME(prefix, ...) \ + _MACHINE_VER_PICK(__VA_ARGS__, \ + _MACHINE_VER_TYPE_NAME5, \ + _MACHINE_VER_TYPE_NAME4, \ + _MACHINE_VER_TYPE_NAME3, \ + _MACHINE_VER_TYPE_NAME2) (prefix, __VA_ARGS__) + +/* + * Construct a name for a versioned machine type that is + * suitable for use as a C symbol (function/variable/etc). + * + * Can be invoked with various signatures + * + * MACHINE_VER_SYM(sym, prefix, major, minor) + * MACHINE_VER_SYM(sym, prefix, major, minor, micro) + * MACHINE_VER_SYM(sym, prefix, major, minor, _, tag) + * MACHINE_VER_SYM(sym, prefix, major, minor, micro, _, tag) + * + * Respectively emitting symbols with the format + * + * {prefix}_machine_{major}_{minor}_{sym} + * {prefix}_machine_{major}_{minor}_{micro}_{sym} + * {prefix}_machine_{major}_{minor}_{tag}_{sym} + * {prefix}_machine_{major}_{minor}_{micro}_{tag}_{sym} + */ +#define _MACHINE_VER_SYM2(sym, prefix, major, minor) \ + prefix ## _machine_ ## major ## _ ## minor ## _ ## sym + +#define _MACHINE_VER_SYM3(sym, prefix, major, minor, micro) \ + prefix ## _machine_ ## major ## _ ## minor ## _ ## micro ## _ ## sym + +#define _MACHINE_VER_SYM4(sym, prefix, major, minor, _unused_, tag) \ + prefix ## _machine_ ## major ## _ ## minor ## _ ## tag ## _ ## sym + +#define _MACHINE_VER_SYM5(sym, prefix, major, minor, micro, _unused_, tag)= \ + prefix ## _machine_ ## major ## _ ## minor ## _ ## micro ## _ ## tag #= # _ ## sym + +#define MACHINE_VER_SYM(sym, prefix, ...) \ + _MACHINE_VER_PICK(__VA_ARGS__, \ + _MACHINE_VER_SYM5, \ + _MACHINE_VER_SYM4, \ + _MACHINE_VER_SYM3, \ + _MACHINE_VER_SYM2) (sym, prefix, __VA_ARGS__) + + #define DEFINE_MACHINE(namestr, machine_initfn) \ static void machine_initfn##_class_init(ObjectClass *oc, void *data) \ { \ --=20 2.43.0