diff options
| -rw-r--r-- | docs/about/deprecated.rst | 21 | ||||
| -rw-r--r-- | target/arm/cpu.c | 3 | ||||
| -rw-r--r-- | target/arm/cpu.h | 1 | ||||
| -rw-r--r-- | target/arm/tcg/cpu32.c | 36 |
4 files changed, 49 insertions, 12 deletions
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 4a3c302962..29de49351d 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -204,6 +204,27 @@ is going to be so much slower it wouldn't make sense for any serious instrumentation. Due to implementation differences there will also be anomalies in things like memory instrumentation. +linux-user mode CPUs +-------------------- + +iwMMXt emulation and the ``pxa`` CPUs (since 10.0) +'''''''''''''''''''''''''''''''''''''''''''''''''' + +The ``pxa`` CPU family (``pxa250``, ``pxa255``, ``pxa260``, +``pxa261``, ``pxa262``, ``pxa270-a0``, ``pxa270-a1``, ``pxa270``, +``pxa270-b0``, ``pxa270-b1``, ``pxa270-c0``, ``pxa270-c5``) are no +longer used in system emulation, because all the machine types which +used these CPUs were removed in the QEMU 9.2 release. These CPUs can +now only be used in linux-user mode, and to do that you would have to +explicitly select one of these CPUs with the ``-cpu`` command line +option or the ``QEMU_CPU`` environment variable. + +We don't believe that anybody is using the iwMMXt emulation, and we do +not have any tests to validate it or any real hardware or similar +known-good implementation to test against. GCC is in the process of +dropping their support for iwMMXt codegen. These CPU types are +therefore deprecated in QEMU, and will be removed in a future release. + System emulator CPUs -------------------- diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 7a83b9ee34..32dc7c1e69 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -2758,6 +2758,9 @@ static void cpu_register_class_init(ObjectClass *oc, void *data) acc->info = data; cc->gdb_core_xml_file = "arm-core.xml"; + if (acc->info->deprecation_note) { + cc->deprecation_note = acc->info->deprecation_note; + } } void arm_cpu_register(const ARMCPUInfo *info) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 2213c27734..c2d2d99b46 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -1118,6 +1118,7 @@ struct ArchCPU { typedef struct ARMCPUInfo { const char *name; + const char *deprecation_note; void (*initfn)(Object *obj); void (*class_init)(ObjectClass *oc, void *data); } ARMCPUInfo; diff --git a/target/arm/tcg/cpu32.c b/target/arm/tcg/cpu32.c index 2ad2182525..0f1c5bc87e 100644 --- a/target/arm/tcg/cpu32.c +++ b/target/arm/tcg/cpu32.c @@ -1026,19 +1026,31 @@ static const ARMCPUInfo arm_tcg_cpus[] = { { .name = "ti925t", .initfn = ti925t_initfn }, { .name = "sa1100", .initfn = sa1100_initfn }, { .name = "sa1110", .initfn = sa1110_initfn }, - { .name = "pxa250", .initfn = pxa250_initfn }, - { .name = "pxa255", .initfn = pxa255_initfn }, - { .name = "pxa260", .initfn = pxa260_initfn }, - { .name = "pxa261", .initfn = pxa261_initfn }, - { .name = "pxa262", .initfn = pxa262_initfn }, + { .name = "pxa250", .initfn = pxa250_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa255", .initfn = pxa255_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa260", .initfn = pxa260_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa261", .initfn = pxa261_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa262", .initfn = pxa262_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, /* "pxa270" is an alias for "pxa270-a0" */ - { .name = "pxa270", .initfn = pxa270a0_initfn }, - { .name = "pxa270-a0", .initfn = pxa270a0_initfn }, - { .name = "pxa270-a1", .initfn = pxa270a1_initfn }, - { .name = "pxa270-b0", .initfn = pxa270b0_initfn }, - { .name = "pxa270-b1", .initfn = pxa270b1_initfn }, - { .name = "pxa270-c0", .initfn = pxa270c0_initfn }, - { .name = "pxa270-c5", .initfn = pxa270c5_initfn }, + { .name = "pxa270", .initfn = pxa270a0_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa270-a0", .initfn = pxa270a0_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa270-a1", .initfn = pxa270a1_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa270-b0", .initfn = pxa270b0_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa270-b1", .initfn = pxa270b1_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa270-c0", .initfn = pxa270c0_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, + { .name = "pxa270-c5", .initfn = pxa270c5_initfn, + .deprecation_note = "iwMMXt CPUs are no longer supported", }, #ifndef TARGET_AARCH64 { .name = "max", .initfn = arm_max_initfn }, #endif |