Don't clobber the MXCSR when we fake FNINIT.
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@ -1,4 +1,4 @@
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/* $NetBSD: process_machdep.c,v 1.36 2001/08/02 22:04:28 thorpej Exp $ */
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/* $NetBSD: process_machdep.c,v 1.37 2001/08/03 01:21:34 thorpej Exp $ */
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/*-
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/*-
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* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
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* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
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@ -215,22 +215,24 @@ process_read_fpregs(p, regs)
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npxsave();
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npxsave();
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#endif
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#endif
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} else {
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} else {
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u_short cw;
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/*
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/*
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* Fake a FNINIT.
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* Fake a FNINIT.
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* The initial control word was already set by setregs(), so
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* The initial control word was already set by setregs(), so
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* save it temporarily.
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* save it temporarily.
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*/
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*/
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if (i386_use_fxsave) {
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if (i386_use_fxsave) {
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cw = frame->sv_xmm.sv_env.en_cw;
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uint32_t mxcsr = frame->sv_xmm.sv_env.en_mxcsr;
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uint16_t cw = frame->sv_xmm.sv_env.en_cw;
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/* XXX Don't zero XMM regs? */
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/* XXX Don't zero XMM regs? */
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memset(&frame->sv_xmm, 0, sizeof(frame->sv_xmm));
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memset(&frame->sv_xmm, 0, sizeof(frame->sv_xmm));
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frame->sv_xmm.sv_env.en_cw = cw;
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frame->sv_xmm.sv_env.en_cw = cw;
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frame->sv_xmm.sv_env.en_mxcsr = mxcsr;
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frame->sv_xmm.sv_env.en_sw = 0x0000;
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frame->sv_xmm.sv_env.en_sw = 0x0000;
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frame->sv_xmm.sv_env.en_tw = 0x00;
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frame->sv_xmm.sv_env.en_tw = 0x00;
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} else {
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} else {
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cw = frame->sv_87.sv_env.en_cw;
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uint16_t cw = frame->sv_87.sv_env.en_cw;
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memset(&frame->sv_87, 0, sizeof(frame->sv_87));
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memset(&frame->sv_87, 0, sizeof(frame->sv_87));
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frame->sv_87.sv_env.en_cw = cw;
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frame->sv_87.sv_env.en_cw = cw;
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frame->sv_87.sv_env.en_sw = 0x0000;
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frame->sv_87.sv_env.en_sw = 0x0000;
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