diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-06-05 18:29:04 +0300 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-07-08 07:30:17 +0100 |
| commit | 623d7e3551a6fc5693c06ea938c60fe281b52e27 (patch) | |
| tree | f32537daa61ae4faa823be2e11f457eb9918e5e0 /util | |
| parent | 276d72ca1b9017916cadc7c170d0d6b31633a9e5 (diff) | |
util: Add cpuinfo-ppc.c
Move the code from tcg/. Fix a bug in that PPC_FEATURE2_ARCH_3_10
is actually spelled PPC_FEATURE2_ARCH_3_1.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'util')
| -rw-r--r-- | util/cpuinfo-ppc.c | 56 | ||||
| -rw-r--r-- | util/meson.build | 2 |
2 files changed, 58 insertions, 0 deletions
diff --git a/util/cpuinfo-ppc.c b/util/cpuinfo-ppc.c new file mode 100644 index 0000000000..d95adc8ccd --- /dev/null +++ b/util/cpuinfo-ppc.c @@ -0,0 +1,56 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + * Host specific cpu indentification for ppc. + */ + +#include "qemu/osdep.h" +#include "host/cpuinfo.h" + +#ifdef CONFIG_GETAUXVAL +# include <sys/auxv.h> +#else +# include <asm/cputable.h> +# include "elf.h" +#endif + +unsigned cpuinfo; + +/* Called both as constructor and (possibly) via other constructors. */ +unsigned __attribute__((constructor)) cpuinfo_init(void) +{ + unsigned info = cpuinfo; + unsigned long hwcap, hwcap2; + + if (info) { + return info; + } + + hwcap = qemu_getauxval(AT_HWCAP); + hwcap2 = qemu_getauxval(AT_HWCAP2); + info = CPUINFO_ALWAYS; + + /* Version numbers are monotonic, and so imply all lower versions. */ + if (hwcap2 & PPC_FEATURE2_ARCH_3_1) { + info |= CPUINFO_V3_1 | CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06; + } else if (hwcap2 & PPC_FEATURE2_ARCH_3_00) { + info |= CPUINFO_V3_0 | CPUINFO_V2_07 | CPUINFO_V2_06; + } else if (hwcap2 & PPC_FEATURE2_ARCH_2_07) { + info |= CPUINFO_V2_07 | CPUINFO_V2_06; + } else if (hwcap & PPC_FEATURE_ARCH_2_06) { + info |= CPUINFO_V2_06; + } + + if (hwcap2 & PPC_FEATURE2_HAS_ISEL) { + info |= CPUINFO_ISEL; + } + if (hwcap & PPC_FEATURE_HAS_ALTIVEC) { + info |= CPUINFO_ALTIVEC; + /* We only care about the portion of VSX that overlaps Altivec. */ + if (hwcap & PPC_FEATURE_HAS_VSX) { + info |= CPUINFO_VSX; + } + } + + cpuinfo = info; + return info; +} diff --git a/util/meson.build b/util/meson.build index 3a93071d27..a375160286 100644 --- a/util/meson.build +++ b/util/meson.build @@ -113,4 +113,6 @@ if cpu == 'aarch64' util_ss.add(files('cpuinfo-aarch64.c')) elif cpu in ['x86', 'x86_64'] util_ss.add(files('cpuinfo-i386.c')) +elif cpu in ['ppc', 'ppc64'] + util_ss.add(files('cpuinfo-ppc.c')) endif |