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Architecture specific initialization prior to processor structures initialization
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This commit is contained in:
Rafal Kupiec
2023-01-30 20:34:05 +01:00
parent 6f068513cd
commit a761d3125a
8 changed files with 82 additions and 3 deletions
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20
xtoskrnl/ar/amd64/cpufunc.c
View File

@@ -526,6 +526,26 @@ ArWriteControlRegister(IN USHORT ControlRegister,
}
}
/**
* Writes the specified value to the program status and control (EFLAGS) register.
*
* @param Value
* The value to write to the EFLAGS register.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTCDECL
VOID
ArWriteEflagsRegister(IN UINT_PTR Value)
{
asm volatile("push %0\n"
"popf"
:
: "rim" (Value));
}
/**
* Writes a 64-bit value to the requested Model Specific Register (MSR).
*

20
xtoskrnl/ar/i686/cpufunc.c
View File

@@ -487,6 +487,26 @@ ArWriteControlRegister(IN USHORT ControlRegister,
}
}
/**
* Writes the specified value to the program status and control (EFLAGS) register.
*
* @param Value
* The value to write to the EFLAGS register.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTCDECL
VOID
ArWriteEflagsRegister(IN UINT_PTR Value)
{
asm volatile("push %0\n"
"popf"
:
: "rim" (Value));
}
/**
* Writes a 64-bit value to the requested Model Specific Register (MSR).
*