117 lines
3.3 KiB
Go
117 lines
3.3 KiB
Go
// cmd/9l/list.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 ppc64
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import (
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"fmt"
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"git.gammaspectra.live/WeebDataHoarder/compute-go/assembler/obj"
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)
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func init() {
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obj.RegisterRegister(obj.RBasePPC64, REG_SPR0+1024, rconv)
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// Note, the last entry in Anames is "LASTAOUT", it is not a real opcode.
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obj.RegisterOpcode(obj.ABasePPC64, Anames[:len(Anames)-1])
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obj.RegisterOpcode(AFIRSTGEN, GenAnames)
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}
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func rconv(r int) string {
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if r == 0 {
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return "NONE"
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}
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if r == REGG {
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// Special case.
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return "g"
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}
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if REG_R0 <= r && r <= REG_R31 {
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return fmt.Sprintf("R%d", r-REG_R0)
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}
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if REG_F0 <= r && r <= REG_F31 {
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return fmt.Sprintf("F%d", r-REG_F0)
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}
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if REG_V0 <= r && r <= REG_V31 {
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return fmt.Sprintf("V%d", r-REG_V0)
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}
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if REG_VS0 <= r && r <= REG_VS63 {
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return fmt.Sprintf("VS%d", r-REG_VS0)
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}
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if REG_CR0 <= r && r <= REG_CR7 {
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return fmt.Sprintf("CR%d", r-REG_CR0)
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}
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if REG_CR0LT <= r && r <= REG_CR7SO {
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bits := [4]string{"LT", "GT", "EQ", "SO"}
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crf := (r - REG_CR0LT) / 4
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return fmt.Sprintf("CR%d%s", crf, bits[r%4])
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}
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if REG_A0 <= r && r <= REG_A7 {
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return fmt.Sprintf("A%d", r-REG_A0)
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}
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if r == REG_CR {
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return "CR"
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}
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if REG_SPR0 <= r && r <= REG_SPR0+1023 {
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switch r {
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case REG_XER:
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return "XER"
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case REG_LR:
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return "LR"
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case REG_CTR:
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return "CTR"
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}
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return fmt.Sprintf("SPR(%d)", r-REG_SPR0)
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}
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if r == REG_FPSCR {
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return "FPSCR"
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}
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if r == REG_MSR {
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return "MSR"
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}
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return fmt.Sprintf("Rgok(%d)", r-obj.RBasePPC64)
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}
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func DRconv(a int) string {
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s := "C_??"
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if a >= C_NONE && a <= C_NCLASS {
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s = cnames9[a]
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}
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var fp string
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fp += s
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return fp
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}
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func ConstantToCRbit(c int64) (int16, bool) {
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reg64 := REG_CRBIT0 + c
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success := reg64 >= REG_CR0LT && reg64 <= REG_CR7SO
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return int16(reg64), success
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}
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