91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
package native
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
sys "golang.org/x/sys/unix"
|
|
|
|
"github.com/go-delve/delve/pkg/proc"
|
|
"github.com/go-delve/delve/pkg/proc/fbsdutil"
|
|
)
|
|
|
|
// SetPC sets RIP to the value specified by 'pc'.
|
|
func (thread *nativeThread) SetPC(pc uint64) error {
|
|
ir, err := registers(thread)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
r := ir.(*fbsdutil.AMD64Registers)
|
|
r.Regs.Rip = int64(pc)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, (*sys.Reg)(r.Regs)) })
|
|
return err
|
|
}
|
|
|
|
// SetSP sets RSP to the value specified by 'sp'
|
|
func (thread *nativeThread) SetSP(sp uint64) (err error) {
|
|
var ir proc.Registers
|
|
ir, err = registers(thread)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
r := ir.(*fbsdutil.AMD64Registers)
|
|
r.Regs.Rsp = int64(sp)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, (*sys.Reg)(r.Regs)) })
|
|
return
|
|
}
|
|
|
|
func (thread *nativeThread) SetDX(dx uint64) (err error) {
|
|
var ir proc.Registers
|
|
ir, err = registers(thread)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
r := ir.(*fbsdutil.AMD64Registers)
|
|
r.Regs.Rdx = int64(dx)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, (*sys.Reg)(r.Regs)) })
|
|
return
|
|
}
|
|
|
|
func registers(thread *nativeThread) (proc.Registers, error) {
|
|
var (
|
|
regs fbsdutil.AMD64PtraceRegs
|
|
err error
|
|
)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceGetRegs(thread.ID, (*sys.Reg)(®s)) })
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var fsbase int64
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceGetFsBase(thread.ID, &fsbase) })
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r := fbsdutil.NewAMD64Registers(®s, uint64(fsbase), func(r *fbsdutil.AMD64Registers) error {
|
|
var fpregset fbsdutil.AMD64Xstate
|
|
var floatLoadError error
|
|
r.Fpregs, fpregset, floatLoadError = thread.fpRegisters()
|
|
r.Fpregset = &fpregset
|
|
return floatLoadError
|
|
})
|
|
return r, nil
|
|
}
|
|
|
|
const (
|
|
_X86_XSTATE_MAX_SIZE = 2696
|
|
_NT_X86_XSTATE = 0x202
|
|
|
|
_XSAVE_HEADER_START = 512
|
|
_XSAVE_HEADER_LEN = 64
|
|
_XSAVE_EXTENDED_REGION_START = 576
|
|
_XSAVE_SSE_REGION_LEN = 416
|
|
)
|
|
|
|
func (thread *nativeThread) fpRegisters() (regs []proc.Register, fpregs fbsdutil.AMD64Xstate, err error) {
|
|
thread.dbp.execPtraceFunc(func() { fpregs, err = ptraceGetRegset(thread.ID) })
|
|
if err != nil {
|
|
err = fmt.Errorf("could not get floating point registers: %v", err.Error())
|
|
}
|
|
regs = fpregs.Decode()
|
|
return
|
|
}
|