diff options
Diffstat (limited to 'sys/arch/i386/include/npx.h')
| -rw-r--r-- | sys/arch/i386/include/npx.h | 56 |
1 files changed, 52 insertions, 4 deletions
diff --git a/sys/arch/i386/include/npx.h b/sys/arch/i386/include/npx.h index c9fab4ffe9b..d6f906efb46 100644 --- a/sys/arch/i386/include/npx.h +++ b/sys/arch/i386/include/npx.h @@ -1,4 +1,4 @@ -/* $OpenBSD: npx.h,v 1.5 2003/06/02 23:27:47 millert Exp $ */ +/* $OpenBSD: npx.h,v 1.6 2004/02/01 19:05:23 deraadt Exp $ */ /* $NetBSD: npx.h,v 1.11 1994/10/27 04:16:11 cgd Exp $ */ /*- @@ -86,9 +86,48 @@ struct save87 { u_long sv_ex_tw; /* tag word for last exception */ }; -/* For the pcb. */ -union fsave87 { - struct save87 npx; +/* Environment of FPU/MMX/SSE/SSE2. */ +struct envxmm { +/*0*/ uint16_t en_cw; /* FPU Control Word */ + uint16_t en_sw; /* FPU Status Word */ + uint8_t en_rsvd0; + uint8_t en_tw; /* FPU Tag Word (abridged) */ + uint16_t en_opcode; /* FPU Opcode */ + uint32_t en_fip; /* FPU Instruction Pointer */ + uint16_t en_fcs; /* FPU IP selector */ + uint16_t en_rsvd1; +/*16*/ uint32_t en_foo; /* FPU Data pointer */ + uint16_t en_fos; /* FPU Data pointer selector */ + uint16_t en_rsvd2; + uint32_t en_mxcsr; /* MXCSR Register State */ + uint32_t en_rsvd3; +}; + +/* FPU regsters in the extended save format. */ +struct fpaccxmm { + uint8_t fp_bytes[10]; + uint8_t fp_rsvd[6]; +}; + +/* SSE/SSE2 registers. */ +struct xmmreg { + uint8_t sse_bytes[16]; +}; + +/* FPU/MMX/SSE/SSE2 context */ +struct savexmm { + struct envxmm sv_env; /* control/status context */ + struct fpaccxmm sv_ac[8]; /* ST/MM regs */ + struct xmmreg sv_xmmregs[8]; /* XMM regs */ + uint8_t sv_rsvd[16 * 14]; + /* 512-bytes --- end of hardware portion of save area */ + uint32_t sv_ex_sw; /* saved SW from last exception */ + uint32_t sv_ex_tw; /* saved TW from last exception */ +}; + +union savefpu { + struct save87 sv_87; + struct savexmm sv_xmm; #ifdef GPL_MATH_EMULATE union i387_union gplemu; #else @@ -109,6 +148,12 @@ struct emcsts { #define __OpenBSD_NPXCW__ 0x127f /* + * The default MXCSR value at reset is 0x1f80, IA-32 Instruction + * Set Reference, pg. 3-369. + */ +#define __INITIAL_MXCSR__ 0x1f80 + +/* * The standard control word from finit is 0x37F, giving: * round to nearest * 64-bit precision @@ -133,4 +178,7 @@ struct emcsts { #define __INITIAL_NPXCW__ __OpenBSD_NPXCW__ +void process_xmm_to_s87(const struct savexmm *, struct save87 *); +void process_s87_to_xmm(const struct save87 *, struct savexmm *); + #endif /* !_I386_NPX_H_ */ |