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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package proc
import (
"os"
"strconv"
"syscall"
)
type _386Regs struct {
syscall.PtraceRegs
setter func(*syscall.PtraceRegs) os.Error
}
var names = []string{
"eax",
"ebx",
"ecx",
"edx",
"esi",
"edi",
"ebp",
"esp",
"eip",
"eflags",
"cs",
"ss",
"ds",
"es",
"fs",
"gs",
}
func (r *_386Regs) PC() Word { return Word(r.Eip) }
func (r *_386Regs) SetPC(val Word) os.Error {
r.Eip = int32(val)
return r.setter(&r.PtraceRegs)
}
func (r *_386Regs) Link() Word {
// TODO(austin)
panic("No link register")
}
func (r *_386Regs) SetLink(val Word) os.Error { panic("No link register") }
func (r *_386Regs) SP() Word { return Word(r.Esp) }
func (r *_386Regs) SetSP(val Word) os.Error {
r.Esp = int32(val)
return r.setter(&r.PtraceRegs)
}
func (r *_386Regs) Names() []string { return names }
func (r *_386Regs) Get(i int) Word {
switch i {
case 0:
return Word(uint32(r.Eax))
case 1:
return Word(uint32(r.Ebx))
case 2:
return Word(uint32(r.Ecx))
case 3:
return Word(uint32(r.Edx))
case 4:
return Word(uint32(r.Esi))
case 5:
return Word(uint32(r.Edi))
case 6:
return Word(uint32(r.Ebp))
case 7:
return Word(uint32(r.Esp))
case 8:
return Word(uint32(r.Eip))
case 9:
return Word(uint32(r.Eflags))
case 10:
return Word(r.Xcs)
case 11:
return Word(r.Xss)
case 12:
return Word(r.Xds)
case 13:
return Word(r.Xes)
case 14:
return Word(r.Xfs)
case 15:
return Word(r.Xgs)
}
panic("invalid register index " + strconv.Itoa(i))
}
func (r *_386Regs) Set(i int, val Word) os.Error {
switch i {
case 0:
r.Eax = int32(val)
case 1:
r.Ebx = int32(val)
case 2:
r.Ecx = int32(val)
case 3:
r.Edx = int32(val)
case 4:
r.Esi = int32(val)
case 5:
r.Edi = int32(val)
case 6:
r.Ebp = int32(val)
case 7:
r.Esp = int32(val)
case 8:
r.Eip = int32(val)
case 9:
r.Eflags = int32(val)
case 10:
r.Xcs = int32(val)
case 11:
r.Xss = int32(val)
case 12:
r.Xds = int32(val)
case 13:
r.Xes = int32(val)
case 14:
r.Xfs = int32(val)
case 15:
r.Xgs = int32(val)
default:
panic("invalid register index " + strconv.Itoa(i))
}
return r.setter(&r.PtraceRegs)
}
func newRegs(regs *syscall.PtraceRegs, setter func(*syscall.PtraceRegs) os.Error) Regs {
res := _386Regs{}
res.PtraceRegs = *regs
res.setter = setter
return &res
}
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