| // 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.Cs); |
| case 11: return Word(r.Ss); |
| case 12: return Word(r.Ds); |
| case 13: return Word(r.Es); |
| case 14: return Word(r.Fs); |
| case 15: return Word(r.Gs); |
| } |
| 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.Cs = uint16(val); |
| case 11: r.Ss = uint16(val); |
| case 12: r.Ds = uint16(val); |
| case 13: r.Es = uint16(val); |
| case 14: r.Fs = uint16(val); |
| case 15: r.Gs = uint16(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; |
| } |