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MSR and syscall changes

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- Moved MSR code to separate files with an enum class
- Implemented syscall_enable in C++ using new MSR calls
This commit is contained in:
Justin C. Miller
2018-09-15 00:37:49 -07:00
parent 62c559043d
commit 1308864061
9 changed files with 78 additions and 61 deletions
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16
src/kernel/io.cpp
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@@ -14,22 +14,6 @@ outb(uint16_t port, uint8_t val)
__asm__ __volatile__ ( "outb %0, %1" :: "a"(val), "Nd"(port) );
}
uint64_t
rdmsr(uint64_t addr)
{
uint32_t low, high;
__asm__ __volatile__ ("rdmsr" : "=a"(low), "=d"(high) : "c"(addr));
return (static_cast<uint64_t>(high) << 32) | low;
}
void
wrmsr(uint64_t addr, uint64_t value)
{
uint32_t low = value & 0xffffffff;
uint32_t high = value >> 32;
__asm__ __volatile__ ("wrmsr" :: "c"(addr), "a"(low), "d"(high));
}
void
io_wait(unsigned times)
{