24ec1754b2
the maximum size of the Xsave area was previously hardcoded but the CPUID instruction can be used to determine its maximum size.
82 lines
2.1 KiB
Go
82 lines
2.1 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/linutil"
|
|
)
|
|
|
|
// SetPC sets EIP to the value specified by 'pc'.
|
|
func (thread *nativeThread) SetPC(pc uint64) error {
|
|
ir, err := registers(thread)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
r := ir.(*linutil.I386Registers)
|
|
r.Regs.Eip = int32(pc)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, (*sys.PtraceRegs)(r.Regs)) })
|
|
return err
|
|
}
|
|
|
|
// SetSP sets ESP 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.(*linutil.I386Registers)
|
|
r.Regs.Esp = int32(sp)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, (*sys.PtraceRegs)(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.(*linutil.I386Registers)
|
|
r.Regs.Edx = int32(dx)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceSetRegs(thread.ID, (*sys.PtraceRegs)(r.Regs)) })
|
|
return
|
|
}
|
|
|
|
func registers(thread *nativeThread) (proc.Registers, error) {
|
|
var (
|
|
regs linutil.I386PtraceRegs
|
|
err error
|
|
)
|
|
thread.dbp.execPtraceFunc(func() { err = sys.PtraceGetRegs(thread.ID, (*sys.PtraceRegs)(®s)) })
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r := linutil.NewI386Registers(®s, func(r *linutil.I386Registers) error {
|
|
var fpregset linutil.I386Xstate
|
|
var floatLoadError error
|
|
r.Fpregs, fpregset, floatLoadError = thread.fpRegisters()
|
|
r.Fpregset = &fpregset
|
|
return floatLoadError
|
|
})
|
|
thread.dbp.execPtraceFunc(func() {
|
|
tls, _ := ptraceGetTls(regs.Xgs, thread.ThreadID())
|
|
r.Tls = uint64(tls)
|
|
})
|
|
return r, nil
|
|
}
|
|
|
|
const _NT_X86_XSTATE = 0x202
|
|
|
|
func (thread *nativeThread) fpRegisters() (regs []proc.Register, fpregs linutil.I386Xstate, err error) {
|
|
thread.dbp.execPtraceFunc(func() { fpregs, err = ptraceGetRegset(thread.ID) })
|
|
regs = fpregs.Decode()
|
|
if err != nil {
|
|
err = fmt.Errorf("could not get floating point registers: %v", err.Error())
|
|
}
|
|
return
|
|
}
|