1784 lines
42 KiB
Go
1784 lines
42 KiB
Go
// cmd/9l/optab.c, cmd/9l/asmout.c from Vita Nuova.
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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// Portions Copyright © 1997-1999 Vita Nuova Limited
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// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
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// Portions Copyright © 2004,2006 Bruce Ellis
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// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
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// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
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// Portions Copyright © 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package mips
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import (
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"fmt"
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"log"
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"sort"
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"github.com/google/gops/internal/obj"
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)
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// Instruction layout.
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const (
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funcAlign = 8
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)
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const (
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r0iszero = 1
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)
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type Optab struct {
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as obj.As
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a1 uint8
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a2 uint8
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a3 uint8
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type_ int8
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size int8
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param int16
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}
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var optab = []Optab{
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{obj.ATEXT, C_LEXT, C_NONE, C_TEXTSIZE, 0, 0, 0},
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{obj.ATEXT, C_ADDR, C_NONE, C_TEXTSIZE, 0, 0, 0},
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{AMOVW, C_REG, C_NONE, C_REG, 1, 4, 0},
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{AMOVV, C_REG, C_NONE, C_REG, 1, 4, 0},
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{AMOVB, C_REG, C_NONE, C_REG, 12, 8, 0},
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{AMOVBU, C_REG, C_NONE, C_REG, 13, 4, 0},
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{AMOVWU, C_REG, C_NONE, C_REG, 14, 8, 0},
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{ASUB, C_REG, C_REG, C_REG, 2, 4, 0},
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{AADD, C_REG, C_REG, C_REG, 2, 4, 0},
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{AAND, C_REG, C_REG, C_REG, 2, 4, 0},
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{ASUB, C_REG, C_NONE, C_REG, 2, 4, 0},
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{AADD, C_REG, C_NONE, C_REG, 2, 4, 0},
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{AAND, C_REG, C_NONE, C_REG, 2, 4, 0},
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{ASLL, C_REG, C_NONE, C_REG, 9, 4, 0},
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{ASLL, C_REG, C_REG, C_REG, 9, 4, 0},
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{AADDF, C_FREG, C_NONE, C_FREG, 32, 4, 0},
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{AADDF, C_FREG, C_REG, C_FREG, 32, 4, 0},
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{ACMPEQF, C_FREG, C_REG, C_NONE, 32, 4, 0},
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{AABSF, C_FREG, C_NONE, C_FREG, 33, 4, 0},
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{AMOVF, C_FREG, C_NONE, C_FREG, 33, 4, 0},
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{AMOVD, C_FREG, C_NONE, C_FREG, 33, 4, 0},
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{AMOVW, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
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{AMOVWU, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
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{AMOVV, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
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{AMOVB, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
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{AMOVBU, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
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{AMOVWL, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
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{AMOVW, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
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{AMOVWU, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
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{AMOVV, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
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{AMOVB, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
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{AMOVBU, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
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{AMOVWL, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
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{AMOVW, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
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{AMOVWU, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
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{AMOVV, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
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{AMOVB, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
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{AMOVBU, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
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{AMOVWL, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
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{AMOVW, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
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{AMOVWU, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
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{AMOVV, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
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{AMOVB, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
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{AMOVBU, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
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{AMOVWL, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
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{AMOVW, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
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{AMOVWU, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
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{AMOVV, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
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{AMOVB, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
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{AMOVBU, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
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{AMOVWL, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
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{AMOVW, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
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{AMOVWU, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
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{AMOVV, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
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{AMOVB, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
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{AMOVBU, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
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{AMOVWL, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
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{AMOVW, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
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{AMOVWU, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
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{AMOVV, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
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{AMOVB, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
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{AMOVBU, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
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{AMOVW, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
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{AMOVWU, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
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{AMOVV, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
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{AMOVB, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
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{AMOVBU, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
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{AMOVW, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
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{AMOVWU, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
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{AMOVV, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
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{AMOVB, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
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{AMOVBU, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
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{AMOVW, C_REG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVWU, C_REG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVV, C_REG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVB, C_REG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVBU, C_REG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVW, C_REG, C_NONE, C_TLS, 53, 8, 0},
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{AMOVWU, C_REG, C_NONE, C_TLS, 53, 8, 0},
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{AMOVV, C_REG, C_NONE, C_TLS, 53, 8, 0},
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{AMOVB, C_REG, C_NONE, C_TLS, 53, 8, 0},
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{AMOVBU, C_REG, C_NONE, C_TLS, 53, 8, 0},
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{AMOVW, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
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{AMOVWU, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
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{AMOVV, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
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{AMOVB, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
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{AMOVBU, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
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{AMOVW, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
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{AMOVWU, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
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{AMOVV, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
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{AMOVB, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
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{AMOVBU, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
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{AMOVW, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
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{AMOVWU, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
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{AMOVV, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
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{AMOVB, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
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{AMOVBU, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
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{AMOVW, C_ADDR, C_NONE, C_REG, 51, 12, 0},
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{AMOVWU, C_ADDR, C_NONE, C_REG, 51, 12, 0},
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{AMOVV, C_ADDR, C_NONE, C_REG, 51, 12, 0},
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{AMOVB, C_ADDR, C_NONE, C_REG, 51, 12, 0},
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{AMOVBU, C_ADDR, C_NONE, C_REG, 51, 12, 0},
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{AMOVW, C_TLS, C_NONE, C_REG, 54, 8, 0},
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{AMOVWU, C_TLS, C_NONE, C_REG, 54, 8, 0},
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{AMOVV, C_TLS, C_NONE, C_REG, 54, 8, 0},
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{AMOVB, C_TLS, C_NONE, C_REG, 54, 8, 0},
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{AMOVBU, C_TLS, C_NONE, C_REG, 54, 8, 0},
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{AMOVW, C_SECON, C_NONE, C_REG, 3, 4, REGSB},
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{AMOVV, C_SECON, C_NONE, C_REG, 3, 4, REGSB},
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{AMOVW, C_SACON, C_NONE, C_REG, 3, 4, REGSP},
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{AMOVV, C_SACON, C_NONE, C_REG, 3, 4, REGSP},
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{AMOVW, C_LECON, C_NONE, C_REG, 52, 12, REGSB},
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{AMOVV, C_LECON, C_NONE, C_REG, 52, 12, REGSB},
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{AMOVW, C_LACON, C_NONE, C_REG, 26, 12, REGSP},
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{AMOVV, C_LACON, C_NONE, C_REG, 26, 12, REGSP},
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{AMOVW, C_ADDCON, C_NONE, C_REG, 3, 4, REGZERO},
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{AMOVV, C_ADDCON, C_NONE, C_REG, 3, 4, REGZERO},
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{AMOVW, C_ANDCON, C_NONE, C_REG, 3, 4, REGZERO},
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{AMOVV, C_ANDCON, C_NONE, C_REG, 3, 4, REGZERO},
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{AMOVW, C_STCON, C_NONE, C_REG, 55, 8, 0},
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{AMOVV, C_STCON, C_NONE, C_REG, 55, 8, 0},
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{AMOVW, C_UCON, C_NONE, C_REG, 24, 4, 0},
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{AMOVV, C_UCON, C_NONE, C_REG, 24, 4, 0},
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{AMOVW, C_LCON, C_NONE, C_REG, 19, 8, 0},
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{AMOVV, C_LCON, C_NONE, C_REG, 19, 8, 0},
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{AMOVW, C_HI, C_NONE, C_REG, 20, 4, 0},
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{AMOVV, C_HI, C_NONE, C_REG, 20, 4, 0},
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{AMOVW, C_LO, C_NONE, C_REG, 20, 4, 0},
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{AMOVV, C_LO, C_NONE, C_REG, 20, 4, 0},
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{AMOVW, C_REG, C_NONE, C_HI, 21, 4, 0},
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{AMOVV, C_REG, C_NONE, C_HI, 21, 4, 0},
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{AMOVW, C_REG, C_NONE, C_LO, 21, 4, 0},
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{AMOVV, C_REG, C_NONE, C_LO, 21, 4, 0},
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{AMUL, C_REG, C_REG, C_NONE, 22, 4, 0},
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{AADD, C_ADD0CON, C_REG, C_REG, 4, 4, 0},
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{AADD, C_ADD0CON, C_NONE, C_REG, 4, 4, 0},
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{AADD, C_ANDCON, C_REG, C_REG, 10, 8, 0},
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{AADD, C_ANDCON, C_NONE, C_REG, 10, 8, 0},
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{AAND, C_AND0CON, C_REG, C_REG, 4, 4, 0},
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{AAND, C_AND0CON, C_NONE, C_REG, 4, 4, 0},
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{AAND, C_ADDCON, C_REG, C_REG, 10, 8, 0},
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{AAND, C_ADDCON, C_NONE, C_REG, 10, 8, 0},
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{AADD, C_UCON, C_REG, C_REG, 25, 8, 0},
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{AADD, C_UCON, C_NONE, C_REG, 25, 8, 0},
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{AAND, C_UCON, C_REG, C_REG, 25, 8, 0},
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{AAND, C_UCON, C_NONE, C_REG, 25, 8, 0},
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{AADD, C_LCON, C_NONE, C_REG, 23, 12, 0},
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{AAND, C_LCON, C_NONE, C_REG, 23, 12, 0},
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{AADD, C_LCON, C_REG, C_REG, 23, 12, 0},
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{AAND, C_LCON, C_REG, C_REG, 23, 12, 0},
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{ASLL, C_SCON, C_REG, C_REG, 16, 4, 0},
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{ASLL, C_SCON, C_NONE, C_REG, 16, 4, 0},
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{ASYSCALL, C_NONE, C_NONE, C_NONE, 5, 4, 0},
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{ABEQ, C_REG, C_REG, C_SBRA, 6, 4, 0},
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{ABEQ, C_REG, C_NONE, C_SBRA, 6, 4, 0},
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{ABLEZ, C_REG, C_NONE, C_SBRA, 6, 4, 0},
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{ABFPT, C_NONE, C_NONE, C_SBRA, 6, 8, 0},
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{AJMP, C_NONE, C_NONE, C_LBRA, 11, 4, 0},
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{AJAL, C_NONE, C_NONE, C_LBRA, 11, 4, 0},
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{AJMP, C_NONE, C_NONE, C_ZOREG, 18, 4, REGZERO},
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{AJAL, C_NONE, C_NONE, C_ZOREG, 18, 4, REGLINK},
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{AMOVW, C_SEXT, C_NONE, C_FREG, 27, 4, REGSB},
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{AMOVF, C_SEXT, C_NONE, C_FREG, 27, 4, REGSB},
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{AMOVD, C_SEXT, C_NONE, C_FREG, 27, 4, REGSB},
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{AMOVW, C_SAUTO, C_NONE, C_FREG, 27, 4, REGSP},
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{AMOVF, C_SAUTO, C_NONE, C_FREG, 27, 4, REGSP},
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{AMOVD, C_SAUTO, C_NONE, C_FREG, 27, 4, REGSP},
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{AMOVW, C_SOREG, C_NONE, C_FREG, 27, 4, REGZERO},
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{AMOVF, C_SOREG, C_NONE, C_FREG, 27, 4, REGZERO},
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{AMOVD, C_SOREG, C_NONE, C_FREG, 27, 4, REGZERO},
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{AMOVW, C_LEXT, C_NONE, C_FREG, 27, 12, REGSB},
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{AMOVF, C_LEXT, C_NONE, C_FREG, 27, 12, REGSB},
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{AMOVD, C_LEXT, C_NONE, C_FREG, 27, 12, REGSB},
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{AMOVW, C_LAUTO, C_NONE, C_FREG, 27, 12, REGSP},
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{AMOVF, C_LAUTO, C_NONE, C_FREG, 27, 12, REGSP},
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{AMOVD, C_LAUTO, C_NONE, C_FREG, 27, 12, REGSP},
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{AMOVW, C_LOREG, C_NONE, C_FREG, 27, 12, REGZERO},
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{AMOVF, C_LOREG, C_NONE, C_FREG, 27, 12, REGZERO},
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{AMOVD, C_LOREG, C_NONE, C_FREG, 27, 12, REGZERO},
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{AMOVF, C_ADDR, C_NONE, C_FREG, 51, 12, 0},
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{AMOVD, C_ADDR, C_NONE, C_FREG, 51, 12, 0},
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{AMOVW, C_FREG, C_NONE, C_SEXT, 28, 4, REGSB},
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{AMOVF, C_FREG, C_NONE, C_SEXT, 28, 4, REGSB},
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{AMOVD, C_FREG, C_NONE, C_SEXT, 28, 4, REGSB},
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{AMOVW, C_FREG, C_NONE, C_SAUTO, 28, 4, REGSP},
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{AMOVF, C_FREG, C_NONE, C_SAUTO, 28, 4, REGSP},
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{AMOVD, C_FREG, C_NONE, C_SAUTO, 28, 4, REGSP},
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{AMOVW, C_FREG, C_NONE, C_SOREG, 28, 4, REGZERO},
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{AMOVF, C_FREG, C_NONE, C_SOREG, 28, 4, REGZERO},
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{AMOVD, C_FREG, C_NONE, C_SOREG, 28, 4, REGZERO},
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{AMOVW, C_FREG, C_NONE, C_LEXT, 28, 12, REGSB},
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{AMOVF, C_FREG, C_NONE, C_LEXT, 28, 12, REGSB},
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{AMOVD, C_FREG, C_NONE, C_LEXT, 28, 12, REGSB},
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{AMOVW, C_FREG, C_NONE, C_LAUTO, 28, 12, REGSP},
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{AMOVF, C_FREG, C_NONE, C_LAUTO, 28, 12, REGSP},
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{AMOVD, C_FREG, C_NONE, C_LAUTO, 28, 12, REGSP},
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{AMOVW, C_FREG, C_NONE, C_LOREG, 28, 12, REGZERO},
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{AMOVF, C_FREG, C_NONE, C_LOREG, 28, 12, REGZERO},
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{AMOVD, C_FREG, C_NONE, C_LOREG, 28, 12, REGZERO},
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{AMOVF, C_FREG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVD, C_FREG, C_NONE, C_ADDR, 50, 12, 0},
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{AMOVW, C_REG, C_NONE, C_FREG, 30, 4, 0},
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{AMOVW, C_FREG, C_NONE, C_REG, 31, 4, 0},
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{AMOVV, C_REG, C_NONE, C_FREG, 47, 4, 0},
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{AMOVV, C_FREG, C_NONE, C_REG, 48, 4, 0},
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{AMOVW, C_ADDCON, C_NONE, C_FREG, 34, 8, 0},
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{AMOVW, C_ANDCON, C_NONE, C_FREG, 34, 8, 0},
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{AMOVW, C_REG, C_NONE, C_MREG, 37, 4, 0},
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{AMOVV, C_REG, C_NONE, C_MREG, 37, 4, 0},
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{AMOVW, C_MREG, C_NONE, C_REG, 38, 4, 0},
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{AMOVV, C_MREG, C_NONE, C_REG, 38, 4, 0},
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{AWORD, C_LCON, C_NONE, C_NONE, 40, 4, 0},
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|
|
{AMOVW, C_REG, C_NONE, C_FCREG, 41, 8, 0},
|
|
{AMOVV, C_REG, C_NONE, C_FCREG, 41, 8, 0},
|
|
{AMOVW, C_FCREG, C_NONE, C_REG, 42, 4, 0},
|
|
{AMOVV, C_FCREG, C_NONE, C_REG, 42, 4, 0},
|
|
|
|
{ABREAK, C_REG, C_NONE, C_SEXT, 7, 4, REGSB}, /* really CACHE instruction */
|
|
{ABREAK, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
|
|
{ABREAK, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
|
|
{ABREAK, C_NONE, C_NONE, C_NONE, 5, 4, 0},
|
|
|
|
{obj.AUNDEF, C_NONE, C_NONE, C_NONE, 49, 4, 0},
|
|
{obj.AUSEFIELD, C_ADDR, C_NONE, C_NONE, 0, 0, 0},
|
|
{obj.APCDATA, C_LCON, C_NONE, C_LCON, 0, 0, 0},
|
|
{obj.AFUNCDATA, C_SCON, C_NONE, C_ADDR, 0, 0, 0},
|
|
{obj.ANOP, C_NONE, C_NONE, C_NONE, 0, 0, 0},
|
|
{obj.ADUFFZERO, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as AJMP
|
|
{obj.ADUFFCOPY, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as AJMP
|
|
|
|
{obj.AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0},
|
|
}
|
|
|
|
var oprange [ALAST & obj.AMask][]Optab
|
|
|
|
var xcmp [C_NCLASS][C_NCLASS]bool
|
|
|
|
func span0(ctxt *obj.Link, cursym *obj.LSym) {
|
|
p := cursym.Text
|
|
if p == nil || p.Link == nil { // handle external functions and ELF section symbols
|
|
return
|
|
}
|
|
ctxt.Cursym = cursym
|
|
ctxt.Autosize = int32(p.To.Offset + 8)
|
|
|
|
if oprange[AOR&obj.AMask] == nil {
|
|
buildop(ctxt)
|
|
}
|
|
|
|
c := int64(0)
|
|
p.Pc = c
|
|
|
|
var m int
|
|
var o *Optab
|
|
for p = p.Link; p != nil; p = p.Link {
|
|
ctxt.Curp = p
|
|
p.Pc = c
|
|
o = oplook(ctxt, p)
|
|
m = int(o.size)
|
|
if m == 0 {
|
|
if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
|
|
ctxt.Diag("zero-width instruction\n%v", p)
|
|
}
|
|
continue
|
|
}
|
|
|
|
c += int64(m)
|
|
}
|
|
|
|
cursym.Size = c
|
|
|
|
/*
|
|
* if any procedure is large enough to
|
|
* generate a large SBRA branch, then
|
|
* generate extra passes putting branches
|
|
* around jmps to fix. this is rare.
|
|
*/
|
|
bflag := 1
|
|
|
|
var otxt int64
|
|
var q *obj.Prog
|
|
for bflag != 0 {
|
|
if ctxt.Debugvlog != 0 {
|
|
ctxt.Logf("%5.2f span1\n", obj.Cputime())
|
|
}
|
|
bflag = 0
|
|
c = 0
|
|
for p = cursym.Text.Link; p != nil; p = p.Link {
|
|
p.Pc = c
|
|
o = oplook(ctxt, p)
|
|
|
|
// very large conditional branches
|
|
if o.type_ == 6 && p.Pcond != nil {
|
|
otxt = p.Pcond.Pc - c
|
|
if otxt < -(1<<17)+10 || otxt >= (1<<17)-10 {
|
|
q = ctxt.NewProg()
|
|
q.Link = p.Link
|
|
p.Link = q
|
|
q.As = AJMP
|
|
q.Lineno = p.Lineno
|
|
q.To.Type = obj.TYPE_BRANCH
|
|
q.Pcond = p.Pcond
|
|
p.Pcond = q
|
|
q = ctxt.NewProg()
|
|
q.Link = p.Link
|
|
p.Link = q
|
|
q.As = AJMP
|
|
q.Lineno = p.Lineno
|
|
q.To.Type = obj.TYPE_BRANCH
|
|
q.Pcond = q.Link.Link
|
|
|
|
addnop(ctxt, p.Link)
|
|
addnop(ctxt, p)
|
|
bflag = 1
|
|
}
|
|
}
|
|
|
|
m = int(o.size)
|
|
if m == 0 {
|
|
if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
|
|
ctxt.Diag("zero-width instruction\n%v", p)
|
|
}
|
|
continue
|
|
}
|
|
|
|
c += int64(m)
|
|
}
|
|
|
|
cursym.Size = c
|
|
}
|
|
|
|
c += -c & (funcAlign - 1)
|
|
cursym.Size = c
|
|
|
|
/*
|
|
* lay out the code, emitting code and data relocations.
|
|
*/
|
|
|
|
cursym.Grow(cursym.Size)
|
|
|
|
bp := cursym.P
|
|
var i int32
|
|
var out [4]uint32
|
|
for p := cursym.Text.Link; p != nil; p = p.Link {
|
|
ctxt.Pc = p.Pc
|
|
ctxt.Curp = p
|
|
o = oplook(ctxt, p)
|
|
if int(o.size) > 4*len(out) {
|
|
log.Fatalf("out array in span0 is too small, need at least %d for %v", o.size/4, p)
|
|
}
|
|
asmout(ctxt, p, o, out[:])
|
|
for i = 0; i < int32(o.size/4); i++ {
|
|
ctxt.Arch.ByteOrder.PutUint32(bp, out[i])
|
|
bp = bp[4:]
|
|
}
|
|
}
|
|
}
|
|
|
|
func isint32(v int64) bool {
|
|
return int64(int32(v)) == v
|
|
}
|
|
|
|
func isuint32(v uint64) bool {
|
|
return uint64(uint32(v)) == v
|
|
}
|
|
|
|
func aclass(ctxt *obj.Link, a *obj.Addr) int {
|
|
switch a.Type {
|
|
case obj.TYPE_NONE:
|
|
return C_NONE
|
|
|
|
case obj.TYPE_REG:
|
|
if REG_R0 <= a.Reg && a.Reg <= REG_R31 {
|
|
return C_REG
|
|
}
|
|
if REG_F0 <= a.Reg && a.Reg <= REG_F31 {
|
|
return C_FREG
|
|
}
|
|
if REG_M0 <= a.Reg && a.Reg <= REG_M31 {
|
|
return C_MREG
|
|
}
|
|
if REG_FCR0 <= a.Reg && a.Reg <= REG_FCR31 {
|
|
return C_FCREG
|
|
}
|
|
if a.Reg == REG_LO {
|
|
return C_LO
|
|
}
|
|
if a.Reg == REG_HI {
|
|
return C_HI
|
|
}
|
|
return C_GOK
|
|
|
|
case obj.TYPE_MEM:
|
|
switch a.Name {
|
|
case obj.NAME_EXTERN,
|
|
obj.NAME_STATIC:
|
|
if a.Sym == nil {
|
|
break
|
|
}
|
|
ctxt.Instoffset = a.Offset
|
|
if a.Sym != nil { // use relocation
|
|
if a.Sym.Type == obj.STLSBSS {
|
|
return C_TLS
|
|
}
|
|
return C_ADDR
|
|
}
|
|
return C_LEXT
|
|
|
|
case obj.NAME_AUTO:
|
|
ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
|
|
if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
|
|
return C_SAUTO
|
|
}
|
|
return C_LAUTO
|
|
|
|
case obj.NAME_PARAM:
|
|
ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8
|
|
if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
|
|
return C_SAUTO
|
|
}
|
|
return C_LAUTO
|
|
|
|
case obj.NAME_NONE:
|
|
ctxt.Instoffset = a.Offset
|
|
if ctxt.Instoffset == 0 {
|
|
return C_ZOREG
|
|
}
|
|
if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
|
|
return C_SOREG
|
|
}
|
|
return C_LOREG
|
|
}
|
|
|
|
return C_GOK
|
|
|
|
case obj.TYPE_TEXTSIZE:
|
|
return C_TEXTSIZE
|
|
|
|
case obj.TYPE_CONST,
|
|
obj.TYPE_ADDR:
|
|
switch a.Name {
|
|
case obj.NAME_NONE:
|
|
ctxt.Instoffset = a.Offset
|
|
if a.Reg != 0 {
|
|
if -BIG <= ctxt.Instoffset && ctxt.Instoffset <= BIG {
|
|
return C_SACON
|
|
}
|
|
if isint32(ctxt.Instoffset) {
|
|
return C_LACON
|
|
}
|
|
return C_DACON
|
|
}
|
|
|
|
goto consize
|
|
|
|
case obj.NAME_EXTERN,
|
|
obj.NAME_STATIC:
|
|
s := a.Sym
|
|
if s == nil {
|
|
break
|
|
}
|
|
if s.Type == obj.SCONST {
|
|
ctxt.Instoffset = a.Offset
|
|
goto consize
|
|
}
|
|
|
|
ctxt.Instoffset = a.Offset
|
|
if s.Type == obj.STLSBSS {
|
|
return C_STCON // address of TLS variable
|
|
}
|
|
return C_LECON
|
|
|
|
case obj.NAME_AUTO:
|
|
ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
|
|
if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
|
|
return C_SACON
|
|
}
|
|
return C_LACON
|
|
|
|
case obj.NAME_PARAM:
|
|
ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8
|
|
if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
|
|
return C_SACON
|
|
}
|
|
return C_LACON
|
|
}
|
|
|
|
return C_GOK
|
|
|
|
consize:
|
|
if ctxt.Instoffset >= 0 {
|
|
if ctxt.Instoffset == 0 {
|
|
return C_ZCON
|
|
}
|
|
if ctxt.Instoffset <= 0x7fff {
|
|
return C_SCON
|
|
}
|
|
if ctxt.Instoffset <= 0xffff {
|
|
return C_ANDCON
|
|
}
|
|
if ctxt.Instoffset&0xffff == 0 && isuint32(uint64(ctxt.Instoffset)) { /* && (instoffset & (1<<31)) == 0) */
|
|
return C_UCON
|
|
}
|
|
if isint32(ctxt.Instoffset) || isuint32(uint64(ctxt.Instoffset)) {
|
|
return C_LCON
|
|
}
|
|
return C_LCON // C_DCON
|
|
}
|
|
|
|
if ctxt.Instoffset >= -0x8000 {
|
|
return C_ADDCON
|
|
}
|
|
if ctxt.Instoffset&0xffff == 0 && isint32(ctxt.Instoffset) {
|
|
return C_UCON
|
|
}
|
|
if isint32(ctxt.Instoffset) {
|
|
return C_LCON
|
|
}
|
|
return C_LCON // C_DCON
|
|
|
|
case obj.TYPE_BRANCH:
|
|
return C_SBRA
|
|
}
|
|
|
|
return C_GOK
|
|
}
|
|
|
|
func prasm(p *obj.Prog) {
|
|
fmt.Printf("%v\n", p)
|
|
}
|
|
|
|
func oplook(ctxt *obj.Link, p *obj.Prog) *Optab {
|
|
if oprange[AOR&obj.AMask] == nil {
|
|
buildop(ctxt)
|
|
}
|
|
|
|
a1 := int(p.Optab)
|
|
if a1 != 0 {
|
|
return &optab[a1-1]
|
|
}
|
|
a1 = int(p.From.Class)
|
|
if a1 == 0 {
|
|
a1 = aclass(ctxt, &p.From) + 1
|
|
p.From.Class = int8(a1)
|
|
}
|
|
|
|
a1--
|
|
a3 := int(p.To.Class)
|
|
if a3 == 0 {
|
|
a3 = aclass(ctxt, &p.To) + 1
|
|
p.To.Class = int8(a3)
|
|
}
|
|
|
|
a3--
|
|
a2 := C_NONE
|
|
if p.Reg != 0 {
|
|
a2 = C_REG
|
|
}
|
|
|
|
//print("oplook %P %d %d %d\n", p, a1, a2, a3);
|
|
|
|
ops := oprange[p.As&obj.AMask]
|
|
c1 := &xcmp[a1]
|
|
c3 := &xcmp[a3]
|
|
for i := range ops {
|
|
op := &ops[i]
|
|
if int(op.a2) == a2 && c1[op.a1] && c3[op.a3] {
|
|
p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
|
|
return op
|
|
}
|
|
}
|
|
|
|
ctxt.Diag("illegal combination %v %v %v %v", p.As, DRconv(a1), DRconv(a2), DRconv(a3))
|
|
prasm(p)
|
|
if ops == nil {
|
|
ops = optab
|
|
}
|
|
return &ops[0]
|
|
}
|
|
|
|
func cmp(a int, b int) bool {
|
|
if a == b {
|
|
return true
|
|
}
|
|
switch a {
|
|
case C_LCON:
|
|
if b == C_ZCON || b == C_SCON || b == C_UCON || b == C_ADDCON || b == C_ANDCON {
|
|
return true
|
|
}
|
|
|
|
case C_ADD0CON:
|
|
if b == C_ADDCON {
|
|
return true
|
|
}
|
|
fallthrough
|
|
|
|
case C_ADDCON:
|
|
if b == C_ZCON || b == C_SCON {
|
|
return true
|
|
}
|
|
|
|
case C_AND0CON:
|
|
if b == C_ANDCON {
|
|
return true
|
|
}
|
|
fallthrough
|
|
|
|
case C_ANDCON:
|
|
if b == C_ZCON || b == C_SCON {
|
|
return true
|
|
}
|
|
|
|
case C_UCON:
|
|
if b == C_ZCON {
|
|
return true
|
|
}
|
|
|
|
case C_SCON:
|
|
if b == C_ZCON {
|
|
return true
|
|
}
|
|
|
|
case C_LACON:
|
|
if b == C_SACON {
|
|
return true
|
|
}
|
|
|
|
case C_LBRA:
|
|
if b == C_SBRA {
|
|
return true
|
|
}
|
|
|
|
case C_LEXT:
|
|
if b == C_SEXT {
|
|
return true
|
|
}
|
|
|
|
case C_LAUTO:
|
|
if b == C_SAUTO {
|
|
return true
|
|
}
|
|
|
|
case C_REG:
|
|
if b == C_ZCON {
|
|
return r0iszero != 0 /*TypeKind(100016)*/
|
|
}
|
|
|
|
case C_LOREG:
|
|
if b == C_ZOREG || b == C_SOREG {
|
|
return true
|
|
}
|
|
|
|
case C_SOREG:
|
|
if b == C_ZOREG {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
type ocmp []Optab
|
|
|
|
func (x ocmp) Len() int {
|
|
return len(x)
|
|
}
|
|
|
|
func (x ocmp) Swap(i, j int) {
|
|
x[i], x[j] = x[j], x[i]
|
|
}
|
|
|
|
func (x ocmp) Less(i, j int) bool {
|
|
p1 := &x[i]
|
|
p2 := &x[j]
|
|
n := int(p1.as) - int(p2.as)
|
|
if n != 0 {
|
|
return n < 0
|
|
}
|
|
n = int(p1.a1) - int(p2.a1)
|
|
if n != 0 {
|
|
return n < 0
|
|
}
|
|
n = int(p1.a2) - int(p2.a2)
|
|
if n != 0 {
|
|
return n < 0
|
|
}
|
|
n = int(p1.a3) - int(p2.a3)
|
|
if n != 0 {
|
|
return n < 0
|
|
}
|
|
return false
|
|
}
|
|
|
|
func opset(a, b0 obj.As) {
|
|
oprange[a&obj.AMask] = oprange[b0]
|
|
}
|
|
|
|
func buildop(ctxt *obj.Link) {
|
|
var n int
|
|
|
|
for i := 0; i < C_NCLASS; i++ {
|
|
for n = 0; n < C_NCLASS; n++ {
|
|
if cmp(n, i) {
|
|
xcmp[i][n] = true
|
|
}
|
|
}
|
|
}
|
|
for n = 0; optab[n].as != obj.AXXX; n++ {
|
|
}
|
|
sort.Sort(ocmp(optab[:n]))
|
|
for i := 0; i < n; i++ {
|
|
r := optab[i].as
|
|
r0 := r & obj.AMask
|
|
start := i
|
|
for optab[i].as == r {
|
|
i++
|
|
}
|
|
oprange[r0] = optab[start:i]
|
|
i--
|
|
|
|
switch r {
|
|
default:
|
|
ctxt.Diag("unknown op in build: %v", r)
|
|
log.Fatalf("bad code")
|
|
|
|
case AABSF:
|
|
opset(AMOVFD, r0)
|
|
opset(AMOVDF, r0)
|
|
opset(AMOVWF, r0)
|
|
opset(AMOVFW, r0)
|
|
opset(AMOVWD, r0)
|
|
opset(AMOVDW, r0)
|
|
opset(ANEGF, r0)
|
|
opset(ANEGD, r0)
|
|
opset(AABSD, r0)
|
|
opset(ATRUNCDW, r0)
|
|
opset(ATRUNCFW, r0)
|
|
opset(ATRUNCDV, r0)
|
|
opset(ATRUNCFV, r0)
|
|
opset(AMOVVF, r0)
|
|
opset(AMOVFV, r0)
|
|
opset(AMOVVD, r0)
|
|
opset(AMOVDV, r0)
|
|
|
|
case AADD:
|
|
opset(ASGT, r0)
|
|
opset(ASGTU, r0)
|
|
opset(AADDU, r0)
|
|
opset(AADDV, r0)
|
|
opset(AADDVU, r0)
|
|
|
|
case AADDF:
|
|
opset(ADIVF, r0)
|
|
opset(ADIVD, r0)
|
|
opset(AMULF, r0)
|
|
opset(AMULD, r0)
|
|
opset(ASUBF, r0)
|
|
opset(ASUBD, r0)
|
|
opset(AADDD, r0)
|
|
|
|
case AAND:
|
|
opset(AOR, r0)
|
|
opset(AXOR, r0)
|
|
|
|
case ABEQ:
|
|
opset(ABNE, r0)
|
|
|
|
case ABLEZ:
|
|
opset(ABGEZ, r0)
|
|
opset(ABGEZAL, r0)
|
|
opset(ABLTZ, r0)
|
|
opset(ABLTZAL, r0)
|
|
opset(ABGTZ, r0)
|
|
|
|
case AMOVB:
|
|
opset(AMOVH, r0)
|
|
|
|
case AMOVBU:
|
|
opset(AMOVHU, r0)
|
|
|
|
case AMUL:
|
|
opset(AREM, r0)
|
|
opset(AREMU, r0)
|
|
opset(ADIVU, r0)
|
|
opset(AMULU, r0)
|
|
opset(ADIV, r0)
|
|
opset(ADIVV, r0)
|
|
opset(ADIVVU, r0)
|
|
opset(AMULV, r0)
|
|
opset(AMULVU, r0)
|
|
opset(AREMV, r0)
|
|
opset(AREMVU, r0)
|
|
|
|
case ASLL:
|
|
opset(ASRL, r0)
|
|
opset(ASRA, r0)
|
|
opset(ASLLV, r0)
|
|
opset(ASRAV, r0)
|
|
opset(ASRLV, r0)
|
|
|
|
case ASUB:
|
|
opset(ASUBU, r0)
|
|
opset(ASUBV, r0)
|
|
opset(ASUBVU, r0)
|
|
opset(ANOR, r0)
|
|
|
|
case ASYSCALL:
|
|
opset(ATLBP, r0)
|
|
opset(ATLBR, r0)
|
|
opset(ATLBWI, r0)
|
|
opset(ATLBWR, r0)
|
|
|
|
case ACMPEQF:
|
|
opset(ACMPGTF, r0)
|
|
opset(ACMPGTD, r0)
|
|
opset(ACMPGEF, r0)
|
|
opset(ACMPGED, r0)
|
|
opset(ACMPEQD, r0)
|
|
|
|
case ABFPT:
|
|
opset(ABFPF, r0)
|
|
|
|
case AMOVWL:
|
|
opset(AMOVWR, r0)
|
|
opset(AMOVVR, r0)
|
|
opset(AMOVVL, r0)
|
|
|
|
case AMOVW,
|
|
AMOVD,
|
|
AMOVF,
|
|
AMOVV,
|
|
ABREAK,
|
|
ARFE,
|
|
AJAL,
|
|
AJMP,
|
|
AMOVWU,
|
|
AWORD,
|
|
obj.ANOP,
|
|
obj.ATEXT,
|
|
obj.AUNDEF,
|
|
obj.AUSEFIELD,
|
|
obj.AFUNCDATA,
|
|
obj.APCDATA,
|
|
obj.ADUFFZERO,
|
|
obj.ADUFFCOPY:
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
func OP(x uint32, y uint32) uint32 {
|
|
return x<<3 | y<<0
|
|
}
|
|
|
|
func SP(x uint32, y uint32) uint32 {
|
|
return x<<29 | y<<26
|
|
}
|
|
|
|
func BCOND(x uint32, y uint32) uint32 {
|
|
return x<<19 | y<<16
|
|
}
|
|
|
|
func MMU(x uint32, y uint32) uint32 {
|
|
return SP(2, 0) | 16<<21 | x<<3 | y<<0
|
|
}
|
|
|
|
func FPF(x uint32, y uint32) uint32 {
|
|
return SP(2, 1) | 16<<21 | x<<3 | y<<0
|
|
}
|
|
|
|
func FPD(x uint32, y uint32) uint32 {
|
|
return SP(2, 1) | 17<<21 | x<<3 | y<<0
|
|
}
|
|
|
|
func FPW(x uint32, y uint32) uint32 {
|
|
return SP(2, 1) | 20<<21 | x<<3 | y<<0
|
|
}
|
|
|
|
func FPV(x uint32, y uint32) uint32 {
|
|
return SP(2, 1) | 21<<21 | x<<3 | y<<0
|
|
}
|
|
|
|
func OP_RRR(op uint32, r1 uint32, r2 uint32, r3 uint32) uint32 {
|
|
return op | (r1&31)<<16 | (r2&31)<<21 | (r3&31)<<11
|
|
}
|
|
|
|
func OP_IRR(op uint32, i uint32, r2 uint32, r3 uint32) uint32 {
|
|
return op | i&0xFFFF | (r2&31)<<21 | (r3&31)<<16
|
|
}
|
|
|
|
func OP_SRR(op uint32, s uint32, r2 uint32, r3 uint32) uint32 {
|
|
return op | (s&31)<<6 | (r2&31)<<16 | (r3&31)<<11
|
|
}
|
|
|
|
func OP_FRRR(op uint32, r1 uint32, r2 uint32, r3 uint32) uint32 {
|
|
return op | (r1&31)<<16 | (r2&31)<<11 | (r3&31)<<6
|
|
}
|
|
|
|
func OP_JMP(op uint32, i uint32) uint32 {
|
|
return op | i&0x3FFFFFF
|
|
}
|
|
|
|
func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
|
|
o1 := uint32(0)
|
|
o2 := uint32(0)
|
|
o3 := uint32(0)
|
|
o4 := uint32(0)
|
|
|
|
switch o.type_ {
|
|
default:
|
|
ctxt.Diag("unknown type %d %v", o.type_)
|
|
prasm(p)
|
|
|
|
case 0: /* pseudo ops */
|
|
break
|
|
|
|
case 1: /* mov r1,r2 ==> OR r1,r0,r2 */
|
|
a := AOR
|
|
if p.As == AMOVW {
|
|
a = AADDU // sign-extended to high 32 bits
|
|
}
|
|
o1 = OP_RRR(oprrr(ctxt, a), uint32(p.From.Reg), uint32(REGZERO), uint32(p.To.Reg))
|
|
|
|
case 2: /* add/sub r1,[r2],r3 */
|
|
r := int(p.Reg)
|
|
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 3: /* mov $soreg, r ==> or/add $i,o,r */
|
|
v := regoff(ctxt, &p.From)
|
|
|
|
r := int(p.From.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
a := AADDVU
|
|
if o.a1 == C_ANDCON {
|
|
a = AOR
|
|
}
|
|
|
|
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 4: /* add $scon,[r1],r2 */
|
|
v := regoff(ctxt, &p.From)
|
|
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
|
|
o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 5: /* syscall */
|
|
o1 = oprrr(ctxt, p.As)
|
|
|
|
case 6: /* beq r1,[r2],sbra */
|
|
v := int32(0)
|
|
if p.Pcond == nil {
|
|
v = int32(-4) >> 2
|
|
} else {
|
|
v = int32(p.Pcond.Pc-p.Pc-4) >> 2
|
|
}
|
|
if (v<<16)>>16 != v {
|
|
ctxt.Diag("short branch too far\n%v", p)
|
|
}
|
|
o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(p.From.Reg), uint32(p.Reg))
|
|
// for ABFPT and ABFPF only: always fill delay slot with 0
|
|
// see comments in func preprocess for details.
|
|
o2 = 0
|
|
|
|
case 7: /* mov r, soreg ==> sw o(r) */
|
|
r := int(p.To.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
v := regoff(ctxt, &p.To)
|
|
o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.From.Reg))
|
|
|
|
case 8: /* mov soreg, r ==> lw o(r) */
|
|
r := int(p.From.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
v := regoff(ctxt, &p.From)
|
|
o1 = OP_IRR(opirr(ctxt, -p.As), uint32(v), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 9: /* sll r1,[r2],r3 */
|
|
r := int(p.Reg)
|
|
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(r), uint32(p.From.Reg), uint32(p.To.Reg))
|
|
|
|
case 10: /* add $con,[r1],r2 ==> mov $con, t; add t,[r1],r2 */
|
|
v := regoff(ctxt, &p.From)
|
|
a := AOR
|
|
if v < 0 {
|
|
a = AADDU
|
|
}
|
|
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
o2 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 11: /* jmp lbra */
|
|
v := int32(0)
|
|
if aclass(ctxt, &p.To) == C_SBRA && p.To.Sym == nil && p.As == AJMP {
|
|
// use PC-relative branch for short branches
|
|
// BEQ R0, R0, sbra
|
|
if p.Pcond == nil {
|
|
v = int32(-4) >> 2
|
|
} else {
|
|
v = int32(p.Pcond.Pc-p.Pc-4) >> 2
|
|
}
|
|
if (v<<16)>>16 == v {
|
|
o1 = OP_IRR(opirr(ctxt, ABEQ), uint32(v), uint32(REGZERO), uint32(REGZERO))
|
|
break
|
|
}
|
|
}
|
|
if p.Pcond == nil {
|
|
v = int32(p.Pc) >> 2
|
|
} else {
|
|
v = int32(p.Pcond.Pc) >> 2
|
|
}
|
|
o1 = OP_JMP(opirr(ctxt, p.As), uint32(v))
|
|
if p.To.Sym == nil {
|
|
p.To.Sym = ctxt.Cursym.Text.From.Sym
|
|
p.To.Offset = p.Pcond.Pc
|
|
}
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc)
|
|
rel.Siz = 4
|
|
rel.Sym = p.To.Sym
|
|
rel.Add = p.To.Offset
|
|
if p.As == AJAL {
|
|
rel.Type = obj.R_CALLMIPS
|
|
} else {
|
|
rel.Type = obj.R_JMPMIPS
|
|
}
|
|
|
|
case 12: /* movbs r,r */
|
|
v := 16
|
|
if p.As == AMOVB {
|
|
v = 24
|
|
}
|
|
o1 = OP_SRR(opirr(ctxt, ASLL), uint32(v), uint32(p.From.Reg), uint32(p.To.Reg))
|
|
o2 = OP_SRR(opirr(ctxt, ASRA), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
|
|
|
|
case 13: /* movbu r,r */
|
|
if p.As == AMOVBU {
|
|
o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xff), uint32(p.From.Reg), uint32(p.To.Reg))
|
|
} else {
|
|
o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xffff), uint32(p.From.Reg), uint32(p.To.Reg))
|
|
}
|
|
|
|
case 14: /* movwu r,r */
|
|
o1 = OP_SRR(opirr(ctxt, -ASLLV), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
|
|
o2 = OP_SRR(opirr(ctxt, -ASRLV), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
|
|
|
|
case 16: /* sll $c,[r1],r2 */
|
|
v := regoff(ctxt, &p.From)
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
|
|
/* OP_SRR will use only the low 5 bits of the shift value */
|
|
if v >= 32 && vshift(p.As) {
|
|
o1 = OP_SRR(opirr(ctxt, -p.As), uint32(v-32), uint32(r), uint32(p.To.Reg))
|
|
} else {
|
|
o1 = OP_SRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.To.Reg))
|
|
}
|
|
|
|
case 18: /* jmp [r1],0(r2) */
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(0), uint32(p.To.Reg), uint32(r))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc)
|
|
rel.Siz = 0
|
|
rel.Type = obj.R_CALLIND
|
|
|
|
case 19: /* mov $lcon,r ==> lu+or */
|
|
v := regoff(ctxt, &p.From)
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
|
|
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
|
|
|
|
case 20: /* mov lo/hi,r */
|
|
a := OP(2, 0) /* mfhi */
|
|
if p.From.Reg == REG_LO {
|
|
a = OP(2, 2) /* mflo */
|
|
}
|
|
o1 = OP_RRR(a, uint32(REGZERO), uint32(REGZERO), uint32(p.To.Reg))
|
|
|
|
case 21: /* mov r,lo/hi */
|
|
a := OP(2, 1) /* mthi */
|
|
if p.To.Reg == REG_LO {
|
|
a = OP(2, 3) /* mtlo */
|
|
}
|
|
o1 = OP_RRR(a, uint32(REGZERO), uint32(p.From.Reg), uint32(REGZERO))
|
|
|
|
case 22: /* mul r1,r2 */
|
|
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(p.Reg), uint32(REGZERO))
|
|
|
|
case 23: /* add $lcon,r1,r2 ==> lu+or+add */
|
|
v := regoff(ctxt, &p.From)
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
|
|
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
o3 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 24: /* mov $ucon,r ==> lu r */
|
|
v := regoff(ctxt, &p.From)
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
|
|
|
|
case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */
|
|
v := regoff(ctxt, &p.From)
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
o2 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 26: /* mov $lsext/auto/oreg,r ==> lu+or+add */
|
|
v := regoff(ctxt, &p.From)
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
|
|
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
|
|
r := int(p.From.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
o3 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 27: /* mov [sl]ext/auto/oreg,fr ==> lwc1 o(r) */
|
|
v := regoff(ctxt, &p.From)
|
|
r := int(p.From.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
a := -AMOVF
|
|
if p.As == AMOVD {
|
|
a = -AMOVD
|
|
}
|
|
switch o.size {
|
|
case 12:
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
|
|
o3 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(REGTMP), uint32(p.To.Reg))
|
|
|
|
case 4:
|
|
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
|
|
}
|
|
|
|
case 28: /* mov fr,[sl]ext/auto/oreg ==> swc1 o(r) */
|
|
v := regoff(ctxt, &p.To)
|
|
r := int(p.To.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
a := AMOVF
|
|
if p.As == AMOVD {
|
|
a = AMOVD
|
|
}
|
|
switch o.size {
|
|
case 12:
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
|
|
o3 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(REGTMP), uint32(p.From.Reg))
|
|
|
|
case 4:
|
|
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.From.Reg))
|
|
}
|
|
|
|
case 30: /* movw r,fr */
|
|
a := SP(2, 1) | (4 << 21) /* mtc1 */
|
|
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
|
|
|
|
case 31: /* movw fr,r */
|
|
a := SP(2, 1) | (0 << 21) /* mtc1 */
|
|
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
|
|
|
|
case 32: /* fadd fr1,[fr2],fr3 */
|
|
r := int(p.Reg)
|
|
if r == 0 {
|
|
r = int(p.To.Reg)
|
|
}
|
|
o1 = OP_FRRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
|
|
|
|
case 33: /* fabs fr1, fr3 */
|
|
o1 = OP_FRRR(oprrr(ctxt, p.As), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
|
|
|
|
case 34: /* mov $con,fr ==> or/add $i,t; mov t,fr */
|
|
v := regoff(ctxt, &p.From)
|
|
a := AADDU
|
|
if o.a1 == C_ANDCON {
|
|
a = AOR
|
|
}
|
|
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
|
|
o2 = OP_RRR(SP(2, 1)|(4<<21), uint32(REGTMP), uint32(0), uint32(p.To.Reg)) /* mtc1 */
|
|
|
|
case 35: /* mov r,lext/auto/oreg ==> sw o(REGTMP) */
|
|
v := regoff(ctxt, &p.To)
|
|
r := int(p.To.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
|
|
o3 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(REGTMP), uint32(p.From.Reg))
|
|
|
|
case 36: /* mov lext/auto/oreg,r ==> lw o(REGTMP) */
|
|
v := regoff(ctxt, &p.From)
|
|
r := int(p.From.Reg)
|
|
if r == 0 {
|
|
r = int(o.param)
|
|
}
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
|
|
o3 = OP_IRR(opirr(ctxt, -p.As), uint32(v), uint32(REGTMP), uint32(p.To.Reg))
|
|
|
|
case 37: /* movw r,mr */
|
|
a := SP(2, 0) | (4 << 21) /* mtc0 */
|
|
if p.As == AMOVV {
|
|
a = SP(2, 0) | (5 << 21) /* dmtc0 */
|
|
}
|
|
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
|
|
|
|
case 38: /* movw mr,r */
|
|
a := SP(2, 0) | (0 << 21) /* mfc0 */
|
|
if p.As == AMOVV {
|
|
a = SP(2, 0) | (1 << 21) /* dmfc0 */
|
|
}
|
|
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
|
|
|
|
case 40: /* word */
|
|
o1 = uint32(regoff(ctxt, &p.From))
|
|
|
|
case 41: /* movw f,fcr */
|
|
o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(REGZERO), uint32(0), uint32(p.To.Reg)) /* mfcc1 */
|
|
o2 = OP_RRR(SP(2, 1)|(6<<21), uint32(p.From.Reg), uint32(0), uint32(p.To.Reg)) /* mtcc1 */
|
|
|
|
case 42: /* movw fcr,r */
|
|
o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(p.To.Reg), uint32(0), uint32(p.From.Reg)) /* mfcc1 */
|
|
|
|
case 47: /* movv r,fr */
|
|
a := SP(2, 1) | (5 << 21) /* dmtc1 */
|
|
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
|
|
|
|
case 48: /* movv fr,r */
|
|
a := SP(2, 1) | (1 << 21) /* dmtc1 */
|
|
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
|
|
|
|
case 49: /* undef */
|
|
o1 = 52 /* trap -- teq r0, r0 */
|
|
|
|
/* relocation operations */
|
|
case 50: /* mov r,addr ==> lu + add REGSB, REGTMP + sw o(REGTMP) */
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(REGTMP))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc)
|
|
rel.Siz = 4
|
|
rel.Sym = p.To.Sym
|
|
rel.Add = p.To.Offset
|
|
rel.Type = obj.R_ADDRMIPSU
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(REGTMP), uint32(REGTMP))
|
|
o3 = OP_IRR(opirr(ctxt, p.As), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
|
|
rel2 := obj.Addrel(ctxt.Cursym)
|
|
rel2.Off = int32(ctxt.Pc + 8)
|
|
rel2.Siz = 4
|
|
rel2.Sym = p.To.Sym
|
|
rel2.Add = p.To.Offset
|
|
rel2.Type = obj.R_ADDRMIPS
|
|
|
|
case 51: /* mov addr,r ==> lu + add REGSB, REGTMP + lw o(REGTMP) */
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(REGTMP))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc)
|
|
rel.Siz = 4
|
|
rel.Sym = p.From.Sym
|
|
rel.Add = p.From.Offset
|
|
rel.Type = obj.R_ADDRMIPSU
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(REGTMP), uint32(REGTMP))
|
|
o3 = OP_IRR(opirr(ctxt, -p.As), uint32(0), uint32(REGTMP), uint32(p.To.Reg))
|
|
rel2 := obj.Addrel(ctxt.Cursym)
|
|
rel2.Off = int32(ctxt.Pc + 8)
|
|
rel2.Siz = 4
|
|
rel2.Sym = p.From.Sym
|
|
rel2.Add = p.From.Offset
|
|
rel2.Type = obj.R_ADDRMIPS
|
|
|
|
case 52: /* mov $lext, r ==> lu + add REGSB, r + add */
|
|
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(p.To.Reg))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc)
|
|
rel.Siz = 4
|
|
rel.Sym = p.From.Sym
|
|
rel.Add = p.From.Offset
|
|
rel.Type = obj.R_ADDRMIPSU
|
|
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(p.To.Reg), uint32(p.To.Reg))
|
|
o3 = OP_IRR(opirr(ctxt, AADDVU), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
|
|
rel2 := obj.Addrel(ctxt.Cursym)
|
|
rel2.Off = int32(ctxt.Pc + 8)
|
|
rel2.Siz = 4
|
|
rel2.Sym = p.From.Sym
|
|
rel2.Add = p.From.Offset
|
|
rel2.Type = obj.R_ADDRMIPS
|
|
|
|
case 53: /* mov r, tlsvar ==> rdhwr + sw o(r3) */
|
|
// clobbers R3 !
|
|
// load thread pointer with RDHWR, R3 is used for fast kernel emulation on Linux
|
|
o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
|
|
o2 = OP_IRR(opirr(ctxt, p.As), uint32(0), uint32(REG_R3), uint32(p.From.Reg))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc + 4)
|
|
rel.Siz = 4
|
|
rel.Sym = p.To.Sym
|
|
rel.Add = p.To.Offset
|
|
rel.Type = obj.R_ADDRMIPSTLS
|
|
|
|
case 54: /* mov tlsvar, r ==> rdhwr + lw o(r3) */
|
|
// clobbers R3 !
|
|
o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
|
|
o2 = OP_IRR(opirr(ctxt, -p.As), uint32(0), uint32(REG_R3), uint32(p.To.Reg))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc + 4)
|
|
rel.Siz = 4
|
|
rel.Sym = p.From.Sym
|
|
rel.Add = p.From.Offset
|
|
rel.Type = obj.R_ADDRMIPSTLS
|
|
|
|
case 55: /* mov $tlsvar, r ==> rdhwr + add */
|
|
// clobbers R3 !
|
|
o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
|
|
o2 = OP_IRR(opirr(ctxt, AADDVU), uint32(0), uint32(REG_R3), uint32(p.To.Reg))
|
|
rel := obj.Addrel(ctxt.Cursym)
|
|
rel.Off = int32(ctxt.Pc + 4)
|
|
rel.Siz = 4
|
|
rel.Sym = p.From.Sym
|
|
rel.Add = p.From.Offset
|
|
rel.Type = obj.R_ADDRMIPSTLS
|
|
}
|
|
|
|
out[0] = o1
|
|
out[1] = o2
|
|
out[2] = o3
|
|
out[3] = o4
|
|
return
|
|
}
|
|
|
|
func vregoff(ctxt *obj.Link, a *obj.Addr) int64 {
|
|
ctxt.Instoffset = 0
|
|
aclass(ctxt, a)
|
|
return ctxt.Instoffset
|
|
}
|
|
|
|
func regoff(ctxt *obj.Link, a *obj.Addr) int32 {
|
|
return int32(vregoff(ctxt, a))
|
|
}
|
|
|
|
func oprrr(ctxt *obj.Link, a obj.As) uint32 {
|
|
switch a {
|
|
case AADD:
|
|
return OP(4, 0)
|
|
case AADDU:
|
|
return OP(4, 1)
|
|
case ASGT:
|
|
return OP(5, 2)
|
|
case ASGTU:
|
|
return OP(5, 3)
|
|
case AAND:
|
|
return OP(4, 4)
|
|
case AOR:
|
|
return OP(4, 5)
|
|
case AXOR:
|
|
return OP(4, 6)
|
|
case ASUB:
|
|
return OP(4, 2)
|
|
case ASUBU:
|
|
return OP(4, 3)
|
|
case ANOR:
|
|
return OP(4, 7)
|
|
case ASLL:
|
|
return OP(0, 4)
|
|
case ASRL:
|
|
return OP(0, 6)
|
|
case ASRA:
|
|
return OP(0, 7)
|
|
case ASLLV:
|
|
return OP(2, 4)
|
|
case ASRLV:
|
|
return OP(2, 6)
|
|
case ASRAV:
|
|
return OP(2, 7)
|
|
case AADDV:
|
|
return OP(5, 4)
|
|
case AADDVU:
|
|
return OP(5, 5)
|
|
case ASUBV:
|
|
return OP(5, 6)
|
|
case ASUBVU:
|
|
return OP(5, 7)
|
|
case AREM,
|
|
ADIV:
|
|
return OP(3, 2)
|
|
case AREMU,
|
|
ADIVU:
|
|
return OP(3, 3)
|
|
case AMUL:
|
|
return OP(3, 0)
|
|
case AMULU:
|
|
return OP(3, 1)
|
|
case AREMV,
|
|
ADIVV:
|
|
return OP(3, 6)
|
|
case AREMVU,
|
|
ADIVVU:
|
|
return OP(3, 7)
|
|
case AMULV:
|
|
return OP(3, 4)
|
|
case AMULVU:
|
|
return OP(3, 5)
|
|
|
|
case AJMP:
|
|
return OP(1, 0)
|
|
case AJAL:
|
|
return OP(1, 1)
|
|
|
|
case ABREAK:
|
|
return OP(1, 5)
|
|
case ASYSCALL:
|
|
return OP(1, 4)
|
|
case ATLBP:
|
|
return MMU(1, 0)
|
|
case ATLBR:
|
|
return MMU(0, 1)
|
|
case ATLBWI:
|
|
return MMU(0, 2)
|
|
case ATLBWR:
|
|
return MMU(0, 6)
|
|
case ARFE:
|
|
return MMU(2, 0)
|
|
|
|
case ADIVF:
|
|
return FPF(0, 3)
|
|
case ADIVD:
|
|
return FPD(0, 3)
|
|
case AMULF:
|
|
return FPF(0, 2)
|
|
case AMULD:
|
|
return FPD(0, 2)
|
|
case ASUBF:
|
|
return FPF(0, 1)
|
|
case ASUBD:
|
|
return FPD(0, 1)
|
|
case AADDF:
|
|
return FPF(0, 0)
|
|
case AADDD:
|
|
return FPD(0, 0)
|
|
case ATRUNCFV:
|
|
return FPF(1, 1)
|
|
case ATRUNCDV:
|
|
return FPD(1, 1)
|
|
case ATRUNCFW:
|
|
return FPF(1, 5)
|
|
case ATRUNCDW:
|
|
return FPD(1, 5)
|
|
case AMOVFV:
|
|
return FPF(4, 5)
|
|
case AMOVDV:
|
|
return FPD(4, 5)
|
|
case AMOVVF:
|
|
return FPV(4, 0)
|
|
case AMOVVD:
|
|
return FPV(4, 1)
|
|
case AMOVFW:
|
|
return FPF(4, 4)
|
|
case AMOVDW:
|
|
return FPD(4, 4)
|
|
case AMOVWF:
|
|
return FPW(4, 0)
|
|
case AMOVDF:
|
|
return FPD(4, 0)
|
|
case AMOVWD:
|
|
return FPW(4, 1)
|
|
case AMOVFD:
|
|
return FPF(4, 1)
|
|
case AABSF:
|
|
return FPF(0, 5)
|
|
case AABSD:
|
|
return FPD(0, 5)
|
|
case AMOVF:
|
|
return FPF(0, 6)
|
|
case AMOVD:
|
|
return FPD(0, 6)
|
|
case ANEGF:
|
|
return FPF(0, 7)
|
|
case ANEGD:
|
|
return FPD(0, 7)
|
|
case ACMPEQF:
|
|
return FPF(6, 2)
|
|
case ACMPEQD:
|
|
return FPD(6, 2)
|
|
case ACMPGTF:
|
|
return FPF(7, 4)
|
|
case ACMPGTD:
|
|
return FPD(7, 4)
|
|
case ACMPGEF:
|
|
return FPF(7, 6)
|
|
case ACMPGED:
|
|
return FPD(7, 6)
|
|
}
|
|
|
|
if a < 0 {
|
|
ctxt.Diag("bad rrr opcode -%v", -a)
|
|
} else {
|
|
ctxt.Diag("bad rrr opcode %v", a)
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func opirr(ctxt *obj.Link, a obj.As) uint32 {
|
|
switch a {
|
|
case AADD:
|
|
return SP(1, 0)
|
|
case AADDU:
|
|
return SP(1, 1)
|
|
case ASGT:
|
|
return SP(1, 2)
|
|
case ASGTU:
|
|
return SP(1, 3)
|
|
case AAND:
|
|
return SP(1, 4)
|
|
case AOR:
|
|
return SP(1, 5)
|
|
case AXOR:
|
|
return SP(1, 6)
|
|
case ALUI:
|
|
return SP(1, 7)
|
|
case ASLL:
|
|
return OP(0, 0)
|
|
case ASRL:
|
|
return OP(0, 2)
|
|
case ASRA:
|
|
return OP(0, 3)
|
|
case AADDV:
|
|
return SP(3, 0)
|
|
case AADDVU:
|
|
return SP(3, 1)
|
|
|
|
case AJMP:
|
|
return SP(0, 2)
|
|
case AJAL,
|
|
obj.ADUFFZERO,
|
|
obj.ADUFFCOPY:
|
|
return SP(0, 3)
|
|
case ABEQ:
|
|
return SP(0, 4)
|
|
case -ABEQ:
|
|
return SP(2, 4) /* likely */
|
|
case ABNE:
|
|
return SP(0, 5)
|
|
case -ABNE:
|
|
return SP(2, 5) /* likely */
|
|
case ABGEZ:
|
|
return SP(0, 1) | BCOND(0, 1)
|
|
case -ABGEZ:
|
|
return SP(0, 1) | BCOND(0, 3) /* likely */
|
|
case ABGEZAL:
|
|
return SP(0, 1) | BCOND(2, 1)
|
|
case -ABGEZAL:
|
|
return SP(0, 1) | BCOND(2, 3) /* likely */
|
|
case ABGTZ:
|
|
return SP(0, 7)
|
|
case -ABGTZ:
|
|
return SP(2, 7) /* likely */
|
|
case ABLEZ:
|
|
return SP(0, 6)
|
|
case -ABLEZ:
|
|
return SP(2, 6) /* likely */
|
|
case ABLTZ:
|
|
return SP(0, 1) | BCOND(0, 0)
|
|
case -ABLTZ:
|
|
return SP(0, 1) | BCOND(0, 2) /* likely */
|
|
case ABLTZAL:
|
|
return SP(0, 1) | BCOND(2, 0)
|
|
case -ABLTZAL:
|
|
return SP(0, 1) | BCOND(2, 2) /* likely */
|
|
case ABFPT:
|
|
return SP(2, 1) | (257 << 16)
|
|
case -ABFPT:
|
|
return SP(2, 1) | (259 << 16) /* likely */
|
|
case ABFPF:
|
|
return SP(2, 1) | (256 << 16)
|
|
case -ABFPF:
|
|
return SP(2, 1) | (258 << 16) /* likely */
|
|
|
|
case AMOVB,
|
|
AMOVBU:
|
|
return SP(5, 0)
|
|
case AMOVH,
|
|
AMOVHU:
|
|
return SP(5, 1)
|
|
case AMOVW,
|
|
AMOVWU:
|
|
return SP(5, 3)
|
|
case AMOVV:
|
|
return SP(7, 7)
|
|
case AMOVF:
|
|
return SP(7, 1)
|
|
case AMOVD:
|
|
return SP(7, 5)
|
|
case AMOVWL:
|
|
return SP(5, 2)
|
|
case AMOVWR:
|
|
return SP(5, 6)
|
|
case AMOVVL:
|
|
return SP(5, 4)
|
|
case AMOVVR:
|
|
return SP(5, 5)
|
|
|
|
case ABREAK:
|
|
return SP(5, 7)
|
|
|
|
case -AMOVWL:
|
|
return SP(4, 2)
|
|
case -AMOVWR:
|
|
return SP(4, 6)
|
|
case -AMOVVL:
|
|
return SP(3, 2)
|
|
case -AMOVVR:
|
|
return SP(3, 3)
|
|
case -AMOVB:
|
|
return SP(4, 0)
|
|
case -AMOVBU:
|
|
return SP(4, 4)
|
|
case -AMOVH:
|
|
return SP(4, 1)
|
|
case -AMOVHU:
|
|
return SP(4, 5)
|
|
case -AMOVW:
|
|
return SP(4, 3)
|
|
case -AMOVWU:
|
|
return SP(4, 7)
|
|
case -AMOVV:
|
|
return SP(6, 7)
|
|
case -AMOVF:
|
|
return SP(6, 1)
|
|
case -AMOVD:
|
|
return SP(6, 5)
|
|
|
|
case ASLLV:
|
|
return OP(7, 0)
|
|
case ASRLV:
|
|
return OP(7, 2)
|
|
case ASRAV:
|
|
return OP(7, 3)
|
|
case -ASLLV:
|
|
return OP(7, 4)
|
|
case -ASRLV:
|
|
return OP(7, 6)
|
|
case -ASRAV:
|
|
return OP(7, 7)
|
|
}
|
|
|
|
if a < 0 {
|
|
ctxt.Diag("bad irr opcode -%v", -a)
|
|
} else {
|
|
ctxt.Diag("bad irr opcode %v", a)
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func vshift(a obj.As) bool {
|
|
switch a {
|
|
case ASLLV,
|
|
ASRLV,
|
|
ASRAV:
|
|
return true
|
|
}
|
|
return false
|
|
}
|