diff options
Diffstat (limited to 'libgo/go/runtime/os_aix.go')
| -rw-r--r-- | libgo/go/runtime/os_aix.go | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/libgo/go/runtime/os_aix.go b/libgo/go/runtime/os_aix.go index 9211f21..b337330 100644 --- a/libgo/go/runtime/os_aix.go +++ b/libgo/go/runtime/os_aix.go @@ -6,7 +6,16 @@ package runtime -import "unsafe" +import ( + "internal/cpu" + "unsafe" +) + +//extern sysconf +func sysconf(int32) _C_long + +//extern getsystemcfg +func getsystemcfg(int32) uint64 type mOS struct { waitsema uintptr // semaphore for parking on locks @@ -106,7 +115,32 @@ func semawakeup(mp *m) { } } +func osinit() { + ncpu = int32(sysconf(__SC_NPROCESSORS_ONLN)) + physPageSize = uintptr(sysconf(__SC_PAGE_SIZE)) + setupSystemConf() +} + const ( _CLOCK_REALTIME = 9 _CLOCK_MONOTONIC = 10 ) + +const ( + // getsystemcfg constants + _SC_IMPL = 2 + _IMPL_POWER8 = 0x10000 + _IMPL_POWER9 = 0x20000 +) + +// setupSystemConf retrieves information about the CPU and updates +// cpu.HWCap variables. +func setupSystemConf() { + impl := getsystemcfg(_SC_IMPL) + if impl&_IMPL_POWER8 != 0 { + cpu.HWCap2 |= cpu.PPC_FEATURE2_ARCH_2_07 + } + if impl&_IMPL_POWER9 != 0 { + cpu.HWCap2 |= cpu.PPC_FEATURE2_ARCH_3_00 + } +} |