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Alex
2022-10-10 23:29:39 +03:00
parent 32b44a50d4
commit 4b6683823f
39 changed files with 2133 additions and 26 deletions
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180
Core/CPU.cpp Normal file
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#include <cpu.hpp>
#include <memory.hpp>
namespace CPU
{
char *Vendor()
{
static char Vendor[16];
#if defined(__amd64__)
asmv("cpuid"
: "=a"(Vendor[0]), "=b"(Vendor[4]), "=c"(Vendor[8]), "=d"(Vendor[12])
: "a"(0));
#elif defined(__i386__)
asmv("cpuid"
: "=a"(Vendor[0]), "=b"(Vendor[4]), "=c"(Vendor[8]), "=d"(Vendor[12])
: "a"(0));
#elif defined(__aarch64__)
asmv("mrs %0, MIDR_EL1"
: "=r"(Vendor[0]));
#endif
return Vendor;
}
char *Name()
{
static char Name[48];
#if defined(__amd64__)
asmv("cpuid"
: "=a"(Name[0]), "=b"(Name[4]), "=c"(Name[8]), "=d"(Name[12])
: "a"(0x80000002));
asmv("cpuid"
: "=a"(Name[16]), "=b"(Name[20]), "=c"(Name[24]), "=d"(Name[28])
: "a"(0x80000003));
asmv("cpuid"
: "=a"(Name[32]), "=b"(Name[36]), "=c"(Name[40]), "=d"(Name[44])
: "a"(0x80000004));
#elif defined(__i386__)
asmv("cpuid"
: "=a"(Name[0]), "=b"(Name[4]), "=c"(Name[8]), "=d"(Name[12])
: "a"(0x80000002));
asmv("cpuid"
: "=a"(Name[16]), "=b"(Name[20]), "=c"(Name[24]), "=d"(Name[28])
: "a"(0x80000003));
asmv("cpuid"
: "=a"(Name[32]), "=b"(Name[36]), "=c"(Name[40]), "=d"(Name[44])
: "a"(0x80000004));
#elif defined(__aarch64__)
asmv("mrs %0, MIDR_EL1"
: "=r"(Name[0]));
#endif
return Name;
}
char *Hypervisor()
{
static char Hypervisor[16];
#if defined(__amd64__)
asmv("cpuid"
: "=a"(Hypervisor[0]), "=b"(Hypervisor[4]), "=c"(Hypervisor[8]), "=d"(Hypervisor[12])
: "a"(0x40000000));
#elif defined(__i386__)
asmv("cpuid"
: "=a"(Hypervisor[0]), "=b"(Hypervisor[4]), "=c"(Hypervisor[8]), "=d"(Hypervisor[12])
: "a"(0x40000000));
#elif defined(__aarch64__)
asmv("mrs %0, MIDR_EL1"
: "=r"(Hypervisor[0]));
#endif
return Hypervisor;
}
void Pause()
{
#if defined(__amd64__) || defined(__i386__)
asmv("pause");
#elif defined(__aarch64__)
asmv("yield");
#endif
}
void Stop()
{
while (1)
{
#if defined(__amd64__) || defined(__i386__)
asmv("cli");
asmv("hlt");
#elif defined(__aarch64__)
asmv("msr daifset, #2");
asmv("wfe");
#endif
}
}
void Halt()
{
#if defined(__amd64__) || defined(__i386__)
asmv("hlt");
#elif defined(__aarch64__)
asmv("wfe");
#endif
}
bool Interrupts(InterruptsType Type)
{
switch (Type)
{
case Check:
{
#if defined(__amd64__)
uint64_t rflags;
asmv("pushfq");
asmv("popq %0"
: "=r"(rflags));
return rflags & (1 << 9);
#elif defined(__i386__)
uint32_t rflags;
asmv("pushfl");
asmv("popl %0"
: "=r"(rflags));
return rflags & (1 << 9);
#elif defined(__aarch64__)
uint64_t daif;
asmv("mrs %0, daif"
: "=r"(daif));
return !(daif & (1 << 2));
#endif
}
case Enable:
{
#if defined(__amd64__) || defined(__i386__)
asmv("sti");
#elif defined(__aarch64__)
asmv("msr daifclr, #2");
#endif
return true;
}
case Disable:
{
#if defined(__amd64__) || defined(__i386__)
asmv("cli");
#elif defined(__aarch64__)
asmv("msr daifset, #2");
#endif
return true;
}
}
return false;
}
void *PageTable(void *PT)
{
#if defined(__amd64__)
if (PT)
asmv("movq %0, %%cr3"
:
: "r"(PT));
else
asmv("movq %%cr3, %0"
: "=r"(PT));
#elif defined(__i386__)
if (PT)
asmv("movl %0, %%cr3"
:
: "r"(PT));
else
asmv("movl %%cr3, %0"
: "=r"(PT));
#elif defined(__aarch64__)
if (PT)
asmv("msr ttbr0_el1, %0"
:
: "r"(PT));
else
asmv("mrs %0, ttbr0_el1"
: "=r"(PT));
#endif
return PT;
}
}