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ntdll: Implement __os_arm64x_get/set_x64_information().

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This commit is contained in:
Alexandre Julliard 2023-11-15 14:19:20 +01:00
parent 36036b9b60
commit 56409f2c79
1 changed files with 92 additions and 0 deletions
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92
dlls/ntdll/signal_arm64ec.c
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@ -36,6 +36,96 @@ WINE_DEFAULT_DEBUG_CHANNEL(unwind);
WINE_DECLARE_DEBUG_CHANNEL(relay);
static UINT64 mxcsr_to_fpcsr( UINT mxcsr )
{
UINT fpcr = 0, fpsr = 0;
if (mxcsr & 0x0001) fpsr |= 0x0001; /* invalid operation */
if (mxcsr & 0x0002) fpsr |= 0x0080; /* denormal */
if (mxcsr & 0x0004) fpsr |= 0x0002; /* zero-divide */
if (mxcsr & 0x0008) fpsr |= 0x0004; /* overflow */
if (mxcsr & 0x0010) fpsr |= 0x0008; /* underflow */
if (mxcsr & 0x0020) fpsr |= 0x0010; /* precision */
if (mxcsr & 0x0040) fpcr |= 0x0001; /* denormals are zero */
if (mxcsr & 0x0080) fpcr |= 0x0100; /* invalid operation mask */
if (mxcsr & 0x0100) fpcr |= 0x8000; /* denormal mask */
if (mxcsr & 0x0200) fpcr |= 0x0200; /* zero-divide mask */
if (mxcsr & 0x0400) fpcr |= 0x0400; /* overflow mask */
if (mxcsr & 0x0800) fpcr |= 0x0800; /* underflow mask */
if (mxcsr & 0x1000) fpcr |= 0x1000; /* precision mask */
if (mxcsr & 0x2000) fpcr |= 0x800000; /* round down */
if (mxcsr & 0x4000) fpcr |= 0x400000; /* round up */
if (mxcsr & 0x8000) fpcr |= 0x1000000; /* flush to zero */
return fpcr | ((UINT64)fpsr << 32);
}
static UINT fpcsr_to_mxcsr( UINT fpcr, UINT fpsr )
{
UINT ret = 0;
if (fpsr & 0x0001) ret |= 0x0001; /* invalid operation */
if (fpsr & 0x0002) ret |= 0x0004; /* zero-divide */
if (fpsr & 0x0004) ret |= 0x0008; /* overflow */
if (fpsr & 0x0008) ret |= 0x0010; /* underflow */
if (fpsr & 0x0010) ret |= 0x0020; /* precision */
if (fpsr & 0x0080) ret |= 0x0002; /* denormal */
if (fpcr & 0x0000001) ret |= 0x0040; /* denormals are zero */
if (fpcr & 0x0000100) ret |= 0x0080; /* invalid operation mask */
if (fpcr & 0x0000200) ret |= 0x0200; /* zero-divide mask */
if (fpcr & 0x0000400) ret |= 0x0400; /* overflow mask */
if (fpcr & 0x0000800) ret |= 0x0800; /* underflow mask */
if (fpcr & 0x0001000) ret |= 0x1000; /* precision mask */
if (fpcr & 0x0008000) ret |= 0x0100; /* denormal mask */
if (fpcr & 0x0400000) ret |= 0x4000; /* round up */
if (fpcr & 0x0800000) ret |= 0x2000; /* round down */
if (fpcr & 0x1000000) ret |= 0x8000; /* flush to zero */
return ret;
}
/***********************************************************************
* LdrpGetX64Information
*/
static NTSTATUS WINAPI LdrpGetX64Information( ULONG type, void *output, void *extra_info )
{
switch (type)
{
case 0:
{
UINT64 fpcr, fpsr;
__asm__ __volatile__( "mrs %0, fpcr; mrs %1, fpsr" : "=r" (fpcr), "=r" (fpsr) );
*(UINT *)output = fpcsr_to_mxcsr( fpcr, fpsr );
return STATUS_SUCCESS;
}
default:
FIXME( "not implemented type %u\n", type );
return STATUS_INVALID_PARAMETER;
}
}
/***********************************************************************
* LdrpSetX64Information
*/
static NTSTATUS WINAPI LdrpSetX64Information( ULONG type, ULONG_PTR input, void *extra_info )
{
switch (type)
{
case 0:
{
UINT64 fpcsr = mxcsr_to_fpcsr( input );
__asm__ __volatile__( "msr fpcr, %0; msr fpsr, %1" :: "r" (fpcsr), "r" (fpcsr >> 32) );
return STATUS_SUCCESS;
}
default:
FIXME( "not implemented type %u\n", type );
return STATUS_INVALID_PARAMETER;
}
}
/*******************************************************************
* KiUserExceptionDispatcher (NTDLL.@)
*/
@ -313,6 +403,8 @@ void WINAPI LdrInitializeThunk( CONTEXT *context, ULONG_PTR unk2, ULONG_PTR unk3
__os_arm64x_check_call = arm64x_check_call;
__os_arm64x_check_icall = arm64x_check_call;
__os_arm64x_check_icall_cfg = arm64x_check_call;
__os_arm64x_get_x64_information = LdrpGetX64Information;
__os_arm64x_set_x64_information = LdrpSetX64Information;
}
loader_init( context, (void **)&context->Rcx );