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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 amd64Regs struct {
syscall.PtraceRegs
setter func(*syscall.PtraceRegs) os.Error
}
var names = [...]string{
"rax",
"rbx",
"rcx",
"rdx",
"rsi",
"rdi",
"rbp",
"rsp",
"r8",
"r9",
"r10",
"r11",
"r12",
"r13",
"r14",
"r15",
"rip",
"eflags",
"cs",
"ss",
"ds",
"es",
"fs",
"gs",
// PtraceRegs contains these registers, but I don't think
// they're actually meaningful.
//"orig_rax",
//"fs_base",
//"gs_base",
}
func (r *amd64Regs) PC() Word { return Word(r.Rip) }
func (r *amd64Regs) SetPC(val Word) os.Error {
r.Rip = uint64(val)
return r.setter(&r.PtraceRegs)
}
func (r *amd64Regs) Link() Word {
// TODO(austin)
panic("No link register")
}
func (r *amd64Regs) SetLink(val Word) os.Error {
panic("No link register")
}
func (r *amd64Regs) SP() Word { return Word(r.Rsp) }
func (r *amd64Regs) SetSP(val Word) os.Error {
r.Rsp = uint64(val)
return r.setter(&r.PtraceRegs)
}
func (r *amd64Regs) Names() []string { return names[0:] }
func (r *amd64Regs) Get(i int) Word {
switch i {
case 0:
return Word(r.Rax)
case 1:
return Word(r.Rbx)
case 2:
return Word(r.Rcx)
case 3:
return Word(r.Rdx)
case 4:
return Word(r.Rsi)
case 5:
return Word(r.Rdi)
case 6:
return Word(r.Rbp)
case 7:
return Word(r.Rsp)
case 8:
return Word(r.R8)
case 9:
return Word(r.R9)
case 10:
return Word(r.R10)
case 11:
return Word(r.R11)
case 12:
return Word(r.R12)
case 13:
return Word(r.R13)
case 14:
return Word(r.R14)
case 15:
return Word(r.R15)
case 16:
return Word(r.Rip)
case 17:
return Word(r.Eflags)
case 18:
return Word(r.Cs)
case 19:
return Word(r.Ss)
case 20:
return Word(r.Ds)
case 21:
return Word(r.Es)
case 22:
return Word(r.Fs)
case 23:
return Word(r.Gs)
}
panic("invalid register index " + strconv.Itoa(i))
}
func (r *amd64Regs) Set(i int, val Word) os.Error {
switch i {
case 0:
r.Rax = uint64(val)
case 1:
r.Rbx = uint64(val)
case 2:
r.Rcx = uint64(val)
case 3:
r.Rdx = uint64(val)
case 4:
r.Rsi = uint64(val)
case 5:
r.Rdi = uint64(val)
case 6:
r.Rbp = uint64(val)
case 7:
r.Rsp = uint64(val)
case 8:
r.R8 = uint64(val)
case 9:
r.R9 = uint64(val)
case 10:
r.R10 = uint64(val)
case 11:
r.R11 = uint64(val)
case 12:
r.R12 = uint64(val)
case 13:
r.R13 = uint64(val)
case 14:
r.R14 = uint64(val)
case 15:
r.R15 = uint64(val)
case 16:
r.Rip = uint64(val)
case 17:
r.Eflags = uint64(val)
case 18:
r.Cs = uint64(val)
case 19:
r.Ss = uint64(val)
case 20:
r.Ds = uint64(val)
case 21:
r.Es = uint64(val)
case 22:
r.Fs = uint64(val)
case 23:
r.Gs = uint64(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 := amd64Regs{}
res.PtraceRegs = *regs
res.setter = setter
return &res
}
|
