| // Copyright 2025 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 windows |
| |
| import ( |
| "internal/goarch" |
| "unsafe" |
| ) |
| |
| const CONTEXT_CONTROL = 0x100001 |
| |
| type M128 struct { |
| Low uint64 |
| High int64 |
| } |
| |
| type Context struct { |
| P1Home uint64 |
| P2Home uint64 |
| P3Home uint64 |
| P4Home uint64 |
| P5Home uint64 |
| P6Home uint64 |
| ContextFlags uint32 |
| MxCsr uint32 |
| SegCs uint16 |
| SegDs uint16 |
| SegEs uint16 |
| SegFs uint16 |
| SegGs uint16 |
| SegSs uint16 |
| EFlags uint32 |
| DR0 uint64 |
| DR1 uint64 |
| DR2 uint64 |
| DR3 uint64 |
| DR6 uint64 |
| DR7 uint64 |
| Rax uint64 |
| Rcx uint64 |
| Rdx uint64 |
| Rbx uint64 |
| Rsp uint64 |
| Rbp uint64 |
| Rsi uint64 |
| Rdi uint64 |
| R8 uint64 |
| R9 uint64 |
| R10 uint64 |
| R11 uint64 |
| R12 uint64 |
| R13 uint64 |
| R14 uint64 |
| R15 uint64 |
| Rip uint64 |
| _ [512]byte |
| VectorRegister [26]M128 |
| VectorControl uint64 |
| DebugControl uint64 |
| LastBranchToRip uint64 |
| LastBranchFromRip uint64 |
| LastExceptionToRip uint64 |
| LastExceptionFromRip uint64 |
| } |
| |
| func (c *Context) PC() uintptr { return uintptr(c.Rip) } |
| func (c *Context) SP() uintptr { return uintptr(c.Rsp) } |
| |
| // AMD64 does not have link register, so this returns 0. |
| func (c *Context) LR() uintptr { return 0 } |
| func (c *Context) SetLR(x uintptr) {} |
| |
| func (c *Context) SetPC(x uintptr) { c.Rip = uint64(x) } |
| func (c *Context) SetSP(x uintptr) { c.Rsp = uint64(x) } |
| func (c *Context) SetFP(x uintptr) { c.Rbp = uint64(x) } |
| |
| func (c *Context) PushCall(targetPC, resumePC uintptr) { |
| sp := c.SP() - goarch.StackAlign |
| *(*uintptr)(unsafe.Pointer(sp)) = resumePC |
| c.SetSP(sp) |
| c.SetPC(targetPC) |
| } |
| |
| type DISPATCHER_CONTEXT struct { |
| ControlPc uint64 |
| ImageBase uint64 |
| FunctionEntry uintptr |
| EstablisherFrame uint64 |
| TargetIp uint64 |
| Context *Context |
| LanguageHandler uintptr |
| HandlerData uintptr |
| } |
| |
| func (c *DISPATCHER_CONTEXT) Ctx() *Context { |
| return c.Context |
| } |
