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/* fppLib.h - floating-point coprocessor support library header */
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/*
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* Copyright (c) 1998,2002-2003,2010,2011 Wind River Systems, Inc.
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*
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* The right to copy, distribute, modify or otherwise make use of this
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* software may be licensed only pursuant to the terms of an applicable
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* Wind River license agreement.
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*/
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/*
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modification history
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--------------------
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01j,05sep11,elp Added xmm registers to host regset (CQID: WIND00286339)
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01i,06apr11,elp added xmm8-xmm15
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01h,30sep10,elp fixed FPXREG_FPX() macro.
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01g,14sep10,elp Added SSE support (64-bits).
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01f,14jan10,elp 64bits support.
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01e,19aug03,dbt Added PAL support.
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01d,17jun03,jmp code cleanup.
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01c,27mar03,jmp rewrote from i86.
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01b,03may02,jmp added fppDtoDx() & fppDxtoD().
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01a,29apr98,cym derived from i86
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*/
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#ifndef __INCfppSimntLibh
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#define __INCfppSimntLibh
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* number of fp registers on coprocessor */
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#define FP_NUM_REGS 8 /* number of FP registers */
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#define XSAVE_HEADER 64 /* number of bytes in the XSAVE header */
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#ifdef _WRS_CONFIG_LP64
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#define XMM_NUM_REGS 16 /* number of XMM registers */
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#define FP_NUM_RESERVED 6 /* reserved area in FPX_CONTEXT */
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/* FPREG_SET structure offsets */
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#define FPREG_FPCR 0x00 /* offset to FPCR in FPREG_SET */
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#define FPREG_FPSR 0x04 /* offset to FPSR in FPREG_SET */
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#define FPREG_FPTAG 0x08 /* offset to FPTAG in FPREG_SET */
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#define FPREG_OP 0x0c /* offset to OP in FPREG_SET */
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#define FPREG_IP 0x10 /* offset to IP in FPREG_SET */
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#define FPREG_CS 0x14 /* offset to CS in FPREG_SET */
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#define FPREG_DP 0x18 /* offset to DP in FPREG_SET */
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#define FPREG_DS 0x1c /* offset to DS in FPREG_SET */
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#define FPREG_FPX(n) (0x20 + (n)*sizeof(DOUBLEX)) /* offset to FPX(n) */
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#else /* _WRS_CONFIG_LP64 */
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#define XMM_NUM_REGS 8 /* number of XMM registers */
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#define FP_NUM_RESERVED 14 /* reserved area in FPX_CONTEXT */
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/* FPREG_SET structure offsets */
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#define FPREG_FPCR 0x00 /* offset to FPCR in FPREG_SET */
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#define FPREG_FPSR 0x04 /* offset to FPSR in FPREG_SET */
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#define FPREG_FPTAG 0x08 /* offset to FPTAG in FPREG_SET */
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#define FPREG_OP 0x0c /* offset to OP in FPREG_SET */
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#define FPREG_IP 0x10 /* offset to IP in FPREG_SET */
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#define FPREG_CS 0x12 /* offset to CS in FPREG_SET */
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#define FPREG_DP 0x14 /* offset to DP in FPREG_SET */
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#define FPREG_DS 0x18 /* offset to DS in FPREG_SET */
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#define FPREG_FPX(n) (0x1c + (n)*sizeof(DOUBLEX)) /* offset to FPX(n) */
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#endif /* _WRS_CONFIG_LP64 */
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/* FPO_CONTEXT structure offsets */
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#define FPO_CONTEXT_FPCR 0x00 /* offset to FPCR in FPO_CONTEXT */
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#define FPO_CONTEXT_FPSR 0x04 /* offset to FPSR in FPO_CONTEXT */
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#define FPO_CONTEXT_FPTAG 0x08 /* offset to FPTAG in FPO_CONTEXT */
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#define FPO_CONTEXT_IP 0x0c /* offset to IP in FPO_CONTEXT */
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#define FPO_CONTEXT_CS 0x10 /* offset to CS in FPO_CONTEXT */
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#define FPO_CONTEXT_OP 0x12 /* offset to OP in FPO_CONTEXT */
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#define FPO_CONTEXT_DP 0x14 /* offset to DP in FPO_CONTEXT */
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#define FPO_CONTEXT_DS 0x18 /* offset to DS in FPO_CONTEXT */
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#define FPO_CONTEXT_FPX(n) (0x1c + (n)*sizeof(DOUBLEX))
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/* FPX_CONTEXT - structure offsets for New FP context */
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#define FPX_CONTEXT_FPCR 0x00 /* offset to FPCR in FPX_CONTEXT */
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#define FPX_CONTEXT_FPSR 0x02 /* offset to FPSR in FPX_CONTEXT */
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#define FPX_CONTEXT_FPTAG 0x04 /* offset to FPTAG in FPX_CONTEXT */
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#define FPX_CONTEXT_OP 0x06 /* offset to OP in FPX_CONTEXT */
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#define FPX_CONTEXT_IP 0x08 /* offset to IP in FPX_CONTEXT */
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#define FPX_CONTEXT_CS 0x0c /* offset to CS in FPX_CONTEXT */
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#define FPX_CONTEXT_DP 0x10 /* offset to DP in FPX_CONTEXT */
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#define FPX_CONTEXT_DS 0x14 /* offset to DS in FPX_CONTEXT */
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#define FPX_CONTEXT_RSVD0 0x18 /* offset to RESERVED0 in FPX_CONTEXT */
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#define FPX_CONTEXT_RSVD1 0x1c /* offset to RESERVED1 in FPX_CONTEXT */
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#define FPX_CONTEXT_FPX(n) (0x20 + (n)*sizeof(DOUBLEX_SSE)) /* FPX(n) */
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/* FPU Control Word register */
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#define FPCR_PC_MASK 0xfcff /* Precision Control Field mask */
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#define FPCR_PC_DOUBLE 0x0200 /* Double precision */
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#ifndef _ASMLANGUAGE
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/* DOUBLEX - double extended precision */
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typedef struct
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{
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unsigned char f[10];
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} DOUBLEX;
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typedef struct
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{
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UCHAR f[10]; /* ST[0-7] or MM[0-7] */
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UCHAR r[6]; /* reserved */
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} DOUBLEX_SSE;
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/* FPO_CONTEXT - Old FP context used by fsave/frstor instruction */
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typedef struct fpOcontext
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{
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int fpcr; /* 0x00: 4 control word */
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int fpsr; /* 0x04: 4 status word */
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int fptag; /* 0x08: 4 tag word */
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int ip; /* 0x0c: 4 instruction pointer */
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short cs; /* 0x10: 2 instr pointer selector */
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short op; /* 0x12: 2 last FP instr op code */
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int dp; /* 0x14: 4 data pointer */
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int ds; /* 0x18: 4 data pointer selector */
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DOUBLEX fpx[FP_NUM_REGS]; /* 0x1c: 8*10 FR[0-7] non-TOS rel. order */
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} FPO_CONTEXT; /* 108 bytes total */
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/* FPX_CONTEXT - New FP context used by fxsave/fxrstor instruction */
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typedef struct fpXcontext
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{
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short fpcr; /* 0x00: 2 control word */
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short fpsr; /* 0x02: 2 status word */
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short fptag; /* 0x04: 2 tag word */
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short op; /* 0x06: 2 last FP instr op code */
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int ip; /* 0x08: 4 instruction pointer */
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int cs; /* 0x0c: 4 instr pointer selector */
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int dp; /* 0x10: 4 data pointer */
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int ds; /* 0x14: 4 data pointer selector */
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int reserved0; /* 0x18: 4 reserved */
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int reserved1; /* 0x1c: 4 reserved */
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DOUBLEX_SSE fpx[FP_NUM_REGS]; /* 0x20: 8*16 FR[0-7] non-TOS rel. order */
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DOUBLEX_SSE xmm[XMM_NUM_REGS]; /* 8*16 XMM[0-7] */
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DOUBLEX_SSE res2[FP_NUM_RESERVED]; /* 14*16 reserved */
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} FPX_CONTEXT; /* 512 bytes total */
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/* FPX_EXT_CONTEXT - Extended FP context used by xsave/xrstor instruction */
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typedef struct fpXExtContext
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{
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short fpcr; /* 0x00: 2 control word */
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short fpsr; /* 0x02: 2 status word */
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short fptag; /* 0x04: 2 tag word */
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short op; /* 0x06: 2 last FP instr op code */
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int ip; /* 0x08: 4 instr pointer */
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int cs; /* 0x0c: 4 instr pointer selector */
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int dp; /* 0x10: 4 data pointer */
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int ds; /* 0x14: 4 data pointer selector */
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int reserved0; /* 0x18: 4 reserved */
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int reserved1; /* 0x20: 4 reserved */
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DOUBLEX_SSE fpx[FP_NUM_REGS]; /* 0x24: 8*16 FR[0-7] */
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DOUBLEX_SSE xmm[XMM_NUM_REGS]; /* 8*16 XMM[0-7] */
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DOUBLEX_SSE res2[FP_NUM_RESERVED]; /* 14*16 reserved */
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UCHAR xSaveHeader[XSAVE_HEADER]; /* 64 XSave header */
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DOUBLEX_SSE ymm[XMM_NUM_REGS]; /* 8*16 higher 128 bits of YMM[0-7] */
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} FPX_EXT_CONTEXT; /* 704 bytes total */
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/* FP_CONTEXT - Common FP context */
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typedef struct fpContext
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{
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union u
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{
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FPO_CONTEXT o; /* old FPO_CONTEXT for fsave/frstor */
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FPX_CONTEXT x; /* new FPX_CONTEXT for fxsave/fxrstor */
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FPX_EXT_CONTEXT x_ext; /* FPX_EXT_CONTEXT xsave/xrestore */
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} u;
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} FP_CONTEXT;
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#ifdef _WRS_CONFIG_LP64
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/* FPREG_SET - FP register set that is different from FP_CONTEXT */
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typedef struct fpregOSet
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{
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int fpcr; /* 0x00: control word */
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int fpsr; /* 0x04: status word */
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int fptag; /* 0x08: tag word */
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int op; /* 0x0c: last FP instruction op code */
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int ip; /* 0x10: instruction pointer */
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int cs; /* 0x14: instruction pointer selector */
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int dp; /* 0x18: data pointer */
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int ds; /* 0x1c: data pointer selector */
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DOUBLEX fpx[FP_NUM_REGS]; /* 0x20: FR[0-7] non-TOS rel. order */
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} FPREGO_SET;
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#else /* _WRS_CONFIG_LP64 */
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typedef FPO_CONTEXT FPREGO_SET;
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#endif /* _WRS_CONFIG_LP64 */
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typedef struct fpregXSet
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{
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int fpcr; /* 0x00: control word */
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int fpsr; /* 0x04: status word */
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int fptag; /* 0x08: tag word */
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int op; /* 0x0c: last FP instruction op code */
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int ip; /* 0x10: instruction pointer */
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int cs; /* 0x14: instruction pointer selector */
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int dp; /* 0x18: data pointer */
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int ds; /* 0x1c: data pointer selector */
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DOUBLEX fpx[FP_NUM_REGS]; /* 0x20: FR[0-7] non-TOS rel. order */
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DOUBLEX_SSE xmm[XMM_NUM_REGS]; /* [8|16]*16 XMM[0-[7|15]] */
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} FPREGX_SET;
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typedef struct fpregXExtSet
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{
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int fpcr; /* 0x00: control word */
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int fpsr; /* 0x04: status word */
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int fptag; /* 0x08: tag word */
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int op; /* 0x0c: last FP instruction op code */
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int ip; /* 0x10: instruction pointer */
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int cs; /* 0x14: instruction pointer selector */
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int dp; /* 0x18: data pointer */
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int ds; /* 0x1c: data pointer selector */
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DOUBLEX fpx[FP_NUM_REGS]; /* 0x20: FR[0-7] non-TOS rel. order */
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DOUBLEX_SSE xmm[XMM_NUM_REGS]; /* [8|16]*16 XMM[0-[7|15]] */
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DOUBLEX_SSE ymm[XMM_NUM_REGS]; /* [8|16]*16 higher 128 bits of YMM */
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} FPREGXEXT_SET;
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typedef struct fpregSet
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{
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union n
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{
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FPREGO_SET o;
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FPREGX_SET x;
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FPREGXEXT_SET x_ext;
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} n;
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} FPREG_SET;
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/* variable declarations */
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extern REG_INDEX fpRegName[]; /* f-point data register table */
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extern REG_INDEX fpCtlRegName[]; /* f-point control register table */
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extern FUNCPTR fppCreateHookRtn; /* arch dependent create hook routine */
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extern FUNCPTR fppDisplayHookRtn; /* arch dependent display routine */
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/* func ptr to fppSave/fppXsave */
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extern void (* _func_fppSaveRtn) (FP_CONTEXT *);
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/* func ptr to fppRestore/fppXrestore */
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extern void (* _func_fppRestoreRtn) (FP_CONTEXT *);
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/* function declarations */
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extern void fppArchInit (void);
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extern STATUS fppProbe (void);
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extern void fppDtoDx (DOUBLEX * pDx, double * pDouble);
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extern void fppDxtoD (double * pDouble, DOUBLEX * pDx);
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extern void fppRegsToCtx (FPREG_SET * pFpRegSet, FP_CONTEXT * pFpContext);
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extern void fppCtxToRegs (FP_CONTEXT * pFpContext, FPREG_SET * pFpRegSet);
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#ifdef _WRS_CONFIG_LP64
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extern void fppXregsToCtx (FPREG_SET * pFpRegSet, FP_CONTEXT * pFpContext);
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extern void fppXctxToRegs (FP_CONTEXT * pFpContext, FPREG_SET * pFpRegSet);
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#endif /* _WRS_CONFIG_LP64 */
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extern FP_CONTEXT * fppCtxCreate (TASK_ID tid);
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extern STATUS fppCtxDelete (FP_CONTEXT * pCtx);
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extern void fppCtxShow (FP_CONTEXT * pFpContext);
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extern STATUS fppEnable (void);
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extern STATUS fppDisable (void);
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCfppSimntLibh */
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