///////////////////////////////////////////////////////////////////////// // $Id: xmm.h,v 1.17 2005-03-19 20:44:01 sshwarts Exp $ ///////////////////////////////////////////////////////////////////////// // // Copyright (c) 2003 Stanislav Shwartsman // Written by Stanislav Shwartsman // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // #ifndef BX_SSE_EXTENSIONS_H #define BX_SSE_EXTENSIONS_H /* XMM REGISTER */ typedef union bx_xmm_reg_t { Bit8s _sbyte[16]; Bit16s _s16[8]; Bit32s _s32[4]; Bit64s _s64[2]; Bit8u _ubyte[16]; Bit16u _u16[8]; Bit32u _u32[4]; Bit64u _u64[2]; } BxPackedXmmRegister; #ifdef BX_BIG_ENDIAN #define xmm64s(i) _s64[1 - (i)] #define xmm32s(i) _s32[3 - (i)] #define xmm16s(i) _s16[7 - (i)] #define xmmsbyte(i) _sbyte[15 - (i)] #define xmmubyte(i) _ubyte[15 - (i)] #define xmm16u(i) _u16[7 - (i)] #define xmm32u(i) _u32[3 - (i)] #define xmm64u(i) _u64[1 - (i)] #else #define xmm64s(i) _s64[(i)] #define xmm32s(i) _s32[(i)] #define xmm16s(i) _s16[(i)] #define xmmsbyte(i) _sbyte[(i)] #define xmmubyte(i) _ubyte[(i)] #define xmm16u(i) _u16[(i)] #define xmm32u(i) _u32[(i)] #define xmm64u(i) _u64[(i)] #endif #if BX_SUPPORT_SSE >= 1 #ifdef BX_SUPPORT_X86_64 # define BX_XMM_REGISTERS 16 #else # define BX_XMM_REGISTERS 8 #endif /* read XMM register */ #define BX_READ_XMM_REG(index) (BX_CPU_THIS_PTR xmm[index]) /* read only high 64 bit of the register */ #define BX_READ_XMM_REG_HI_QWORD(index) \ ((BX_CPU_THIS_PTR xmm[index]).xmm64u(1)) /* read only low 64 bit of the register */ #define BX_READ_XMM_REG_LO_QWORD(index) \ ((BX_CPU_THIS_PTR xmm[index]).xmm64u(0)) /* read only low 32 bit of the register */ #define BX_READ_XMM_REG_LO_DWORD(index) \ ((BX_CPU_THIS_PTR xmm[index]).xmm32u(0)) /* short names for above macroses */ #define BX_XMM_REG_HI_QWORD BX_READ_XMM_REG_HI_QWORD #define BX_XMM_REG_LO_QWORD BX_READ_XMM_REG_LO_QWORD #define BX_XMM_REG_LO_DWORD BX_READ_XMM_REG_LO_DWORD /* store XMM register */ #define BX_WRITE_XMM_REG(index, reg) \ { BX_CPU_THIS_PTR xmm[index] = (reg); } /* store only high 64 bit of the register, rest of the register unchanged */ #define BX_WRITE_XMM_REG_HI_QWORD(index, reg64) \ { (BX_CPU_THIS_PTR xmm[index]).xmm64u(1) = (reg64); } /* store only low 64 bit of the register, rest of the register unchanged */ #define BX_WRITE_XMM_REG_LO_QWORD(index, reg64) \ { (BX_CPU_THIS_PTR xmm[index]).xmm64u(0) = (reg64); } /* store only low 32 bit of the register, rest of the register unchanged */ #define BX_WRITE_XMM_REG_LO_DWORD(index, reg32) \ { (BX_CPU_THIS_PTR xmm[index]).xmm32u(0) = (reg32); } /* MXCSR REGISTER */ /* 31|30|29|28|27|26|25|24|23|22|21|20|19|18|17|16 * ==|==|=====|==|==|==|==|==|==|==|==|==|==|==|== (reserved) * 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0| 0 * * 15|14|13|12|11|10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0 * ==|==|=====|==|==|==|==|==|==|==|==|==|==|==|== * FZ| R C |PM|UM|OM|ZM|DM|IM|DZ|PE|UE|OE|ZE|DE|IE */ /* MXCSR REGISTER FIELDS DESCRIPTION */ /* * IE 0 Invalid-Operation Exception 0 * DE 1 Denormalized-Operand Exception 0 * ZE 2 Zero-Divide Exception 0 * OE 3 Overflow Exception 0 * UE 4 Underflow Exception 0 * PE 5 Precision Exception 0 * DZ 6 Denormals are Zeros 0 * IM 7 Invalid-Operation Exception Mask 1 * DM 8 Denormalized-Operand Exception Mask 1 * ZM 9 Zero-Divide Exception Mask 1 * OM 10 Overflow Exception Mask 1 * UM 11 Underflow Exception Mask 1 * PM 12 Precision Exception Mask 1 * RC 13-14 Floating-Point Rounding Control 00 * FZ 15 Flush-to-Zero for Masked Underflow 0 */ #define MXCSR_DAZ 0x00000040 #define MXCSR_EXCEPTIONS 0x0000003F #define MXCSR_MASKED_EXCEPTIONS 0x00001F80 #define MXCSR_ROUNDING_CONTROL 0x00006000 #define MXCSR_FLUSH_MASKED_UNDERFLOW 0x00008000 #define MXCSR_IE 0x00000001 #define MXCSR_DE 0x00000002 #define MXCSR_ZE 0x00000004 #define MXCSR_OE 0x00000008 #define MXCSR_UE 0x00000010 #define MXCSR_PE 0x00000020 #define MXCSR_IM 0x00000080 #define MXCSR_DM 0x00000100 #define MXCSR_ZM 0x00000200 #define MXCSR_OM 0x00000400 #define MXCSR_UM 0x00000800 #define MXCSR_PM 0x00001000 #define MXCSR_RESET 0x00001F80 /* reset value of the MXCSR register */ struct bx_mxcsr_t { Bit32u mxcsr; bx_mxcsr_t (Bit32u val = MXCSR_RESET) : mxcsr(val) {} #define IMPLEMENT_MXCSR_ACCESSOR(name, bitmask, bitnum) \ int get_##name () const { \ return (mxcsr & (bitmask)) >> (bitnum); \ } IMPLEMENT_MXCSR_ACCESSOR(exceptions_masks, MXCSR_MASKED_EXCEPTIONS, 7); IMPLEMENT_MXCSR_ACCESSOR(DAZ, MXCSR_DAZ, 6); IMPLEMENT_MXCSR_ACCESSOR(rounding_mode, MXCSR_ROUNDING_CONTROL, 13); IMPLEMENT_MXCSR_ACCESSOR(flush_masked_underflow, MXCSR_FLUSH_MASKED_UNDERFLOW, 15); IMPLEMENT_MXCSR_ACCESSOR(IE, MXCSR_IE, 0); IMPLEMENT_MXCSR_ACCESSOR(DE, MXCSR_DE, 1); IMPLEMENT_MXCSR_ACCESSOR(ZE, MXCSR_ZE, 2); IMPLEMENT_MXCSR_ACCESSOR(OE, MXCSR_OE, 3); IMPLEMENT_MXCSR_ACCESSOR(UE, MXCSR_UE, 4); IMPLEMENT_MXCSR_ACCESSOR(PE, MXCSR_PE, 5); IMPLEMENT_MXCSR_ACCESSOR(IM, MXCSR_IM, 7); IMPLEMENT_MXCSR_ACCESSOR(DM, MXCSR_DM, 8); IMPLEMENT_MXCSR_ACCESSOR(ZM, MXCSR_ZM, 9); IMPLEMENT_MXCSR_ACCESSOR(OM, MXCSR_OM, 10); IMPLEMENT_MXCSR_ACCESSOR(UM, MXCSR_UM, 11); IMPLEMENT_MXCSR_ACCESSOR(PM, MXCSR_PM, 12); void set_exceptions(int status) { mxcsr |= (status & MXCSR_EXCEPTIONS); } }; #if BX_SUPPORT_DAZ #define MXCSR_MASK 0x0000FFFF /* reset reserved bits */ #else #define MXCSR_MASK 0x0000FFBF /* reset reserved bits */ #endif #if defined(NEED_CPU_REG_SHORTCUTS) #define MXCSR (BX_CPU_THIS_PTR mxcsr) #endif /* INTEGER SATURATION */ /* SaturateWordSToByteS converts a signed 16-bit value to a signed 8-bit value. If the signed 16-bit value is less than -128, it is represented by the saturated value -128 (0x80). If it is greater than 127, it is represented by the saturated value 127 (0x7F). */ Bit8s SaturateWordSToByteS(Bit16s value) BX_CPP_AttrRegparmN(1); /* SaturateDwordSToWordS converts a signed 32-bit value to a signed 16-bit value. If the signed 32-bit value is less than -32768, it is represented by the saturated value -32768 (0x8000). If it is greater than 32767, it is represented by the saturated value 32767 (0x7FFF). */ Bit16s SaturateDwordSToWordS(Bit32s value) BX_CPP_AttrRegparmN(1); /* SaturateWordSToByteU converts a signed 16-bit value to an unsigned 8-bit value. If the signed 16-bit value is less than zero it is represented by the saturated value zero (0x00).If it is greater than 255 it is represented by the saturated value 255 (0xFF). */ Bit8u SaturateWordSToByteU(Bit16s value) BX_CPP_AttrRegparmN(1); /* SaturateDwordSToWordU converts a signed 32-bit value to an unsigned 16-bit value. If the signed 32-bit value is less than zero, it is represented by the saturated value 65535 (0x0000). If it is greater than 65535, it is represented by the saturated value 65535 (0xFFFF). */ Bit16u SaturateDwordSToWordU(Bit32s value) BX_CPP_AttrRegparmN(1); #endif // BX_SUPPORT_SSE #endif