cosmopolitan/libc/nexgen32e/vendor.internal.h

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#ifndef COSMOPOLITAN_LIBC_NEXGEN32E_VENDOR_H_
#define COSMOPOLITAN_LIBC_NEXGEN32E_VENDOR_H_
#include "libc/nexgen32e/kcpuids.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
/*
* Known 80x86 Vendors (CPUID.0 EBX+EDX+ECX)
*
* ╤ ╤
* GenuineIntel
* AuthenticAMD
* GenuineCosmo
* NexGenDriven
* AMDisbetter!
* CentaurHauls
* TransmetaCPU
* GenuineTMx86
* CyrixInstead
* UMC UMC UMC
* SiS SiS SiS
* Geode by NSC
* RiseRiseRise
* Vortex86 SoC
* VIA VIA VIA
* VMwareVMware
* XenVMMXenVMM
* Microsoft Hv
* └────┐ │
* G ⊕ t = 0x33 Intel
* A ⊕ A = 0x00 AMD
* G ⊕ s = 0x34 Cosmopolitan
* N ⊕ v = 0x38 NexGen (Modern x86)
* A ⊕ e = 0x24 AMD (Rank & File)
* C ⊕ u = 0x36 Via (DBA Centaur)
* T ⊕ C = 0x17 Transmeta (Historical)
* G ⊕ x = 0x3f Transmeta (Historical)
* C ⊕ e = 0x26 Cyrix (Historical)
* U ⊕ M = 0x18 UMC (Taiwan)
* S ⊕ i = 0x3a SiS (Historical)
* G ⊕ N = 0x09 National Semiconductors (OLPC)
* R ⊕ i = 0x3b Rise Technology (Historical)
* V ⊕ S = 0x05 DM&P (Vortex86)
* V ⊕ I = 0x1f Via
* V ⊕ a = 0x37 VMware
* X ⊕ V = 0x0e Xen
* M ⊕ = 0x6d Microsoft (Win10 Hyper-V)
* │ │
* │ │ perfect
* │ │ 𝑕(𝑠)=𝑠₀⊕𝑠₉
* ╧ ╧
*
* @note Parallels Desktop CPU brand string is " lrpepyh vr " since even
* folks designing microprocessor emulators apparently struggle w/
* endianness lool.
*/
#define IsAuthenticAMD() (_KCPUIDS_VENDOR() == 0x00)
#define IsGenuineIntel() (_KCPUIDS_VENDOR() == 0x33)
#define IsGenuineCosmo() (_KCPUIDS_VENDOR() == 0x34)
#define _KCPUIDS_VENDOR() \
(((kCpuids[KCPUIDS_0H][KCPUIDS_EBX] >> 000) & 0xff) ^ \
((kCpuids[KCPUIDS_0H][KCPUIDS_EDX] >> 010) & 0xff))
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_NEXGEN32E_VENDOR_H_ */