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537c21338b
This is mutually exclusive with Windows support. Documentation for how to use it has been written in libc/runtime/efimain.c
65 lines
2 KiB
C
65 lines
2 KiB
C
#ifndef COSMOPOLITAN_LIBC_NEXGEN32E_VENDOR_H_
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#define COSMOPOLITAN_LIBC_NEXGEN32E_VENDOR_H_
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#include "libc/nexgen32e/kcpuids.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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/*
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* Known 80x86 Vendors (CPUID.0 EBX+EDX+ECX)
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*
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* ╤ ╤
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* GenuineIntel
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* AuthenticAMD
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* GenuineCosmo
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* NexGenDriven
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* AMDisbetter!
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* CentaurHauls
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* TransmetaCPU
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* GenuineTMx86
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* CyrixInstead
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* UMC UMC UMC
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* SiS SiS SiS
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* Geode by NSC
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* RiseRiseRise
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* Vortex86 SoC
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* VIA VIA VIA
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* VMwareVMware
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* XenVMMXenVMM
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* Microsoft Hv
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* └────┐ │
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* G ⊕ t = 0x33 Intel
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* A ⊕ A = 0x00 AMD
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* G ⊕ s = 0x34 Cosmopolitan
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* N ⊕ v = 0x38 NexGen (Modern x86)
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* A ⊕ e = 0x24 AMD (Rank & File)
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* C ⊕ u = 0x36 Via (DBA Centaur)
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* T ⊕ C = 0x17 Transmeta (Historical)
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* G ⊕ x = 0x3f Transmeta (Historical)
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* C ⊕ e = 0x26 Cyrix (Historical)
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* U ⊕ M = 0x18 UMC (Taiwan)
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* S ⊕ i = 0x3a SiS (Historical)
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* G ⊕ N = 0x09 National Semiconductors (OLPC)
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* R ⊕ i = 0x3b Rise Technology (Historical)
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* V ⊕ S = 0x05 DM&P (Vortex86)
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* V ⊕ I = 0x1f Via
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* V ⊕ a = 0x37 VMware
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* X ⊕ V = 0x0e Xen
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* M ⊕ = 0x6d Microsoft (Win10 Hyper-V)
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* │ │
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* │ │ perfect
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* │ │ (𝑠)=𝑠₀⊕𝑠₉
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* ╧ ╧
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*
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* @note Parallels Desktop CPU brand string is " lrpepyh vr " since even
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* folks designing microprocessor emulators apparently struggle w/
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* endianness lool.
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*/
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#define IsAuthenticAMD() (_KCPUIDS_VENDOR() == 0x00)
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#define IsGenuineIntel() (_KCPUIDS_VENDOR() == 0x33)
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#define IsGenuineCosmo() (_KCPUIDS_VENDOR() == 0x34)
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#define _KCPUIDS_VENDOR() \
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(((kCpuids[KCPUIDS_0H][KCPUIDS_EBX] >> 000) & 0xff) ^ \
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((kCpuids[KCPUIDS_0H][KCPUIDS_ECX] >> 010) & 0xff))
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_NEXGEN32E_VENDOR_H_ */
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