| // 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 runtime |
| |
| const _CONTEXT_CONTROL = 0x10001 |
| |
| type floatingsavearea struct { |
| controlword uint32 |
| statusword uint32 |
| tagword uint32 |
| erroroffset uint32 |
| errorselector uint32 |
| dataoffset uint32 |
| dataselector uint32 |
| registerarea [80]uint8 |
| cr0npxstate uint32 |
| } |
| |
| type context struct { |
| contextflags uint32 |
| dr0 uint32 |
| dr1 uint32 |
| dr2 uint32 |
| dr3 uint32 |
| dr6 uint32 |
| dr7 uint32 |
| floatsave floatingsavearea |
| seggs uint32 |
| segfs uint32 |
| seges uint32 |
| segds uint32 |
| edi uint32 |
| esi uint32 |
| ebx uint32 |
| edx uint32 |
| ecx uint32 |
| eax uint32 |
| ebp uint32 |
| eip uint32 |
| segcs uint32 |
| eflags uint32 |
| esp uint32 |
| segss uint32 |
| extendedregisters [512]uint8 |
| } |
| |
| func (c *context) ip() uintptr { return uintptr(c.eip) } |
| func (c *context) sp() uintptr { return uintptr(c.esp) } |
| |
| // 386 does not have link register, so this returns 0. |
| func (c *context) lr() uintptr { return 0 } |
| func (c *context) set_lr(x uintptr) {} |
| |
| func (c *context) set_ip(x uintptr) { c.eip = uint32(x) } |
| func (c *context) set_sp(x uintptr) { c.esp = uint32(x) } |
| |
| func prepareContextForSigResume(c *context) { |
| c.edx = c.esp |
| c.ecx = c.eip |
| } |
| |
| func dumpregs(r *context) { |
| print("eax ", hex(r.eax), "\n") |
| print("ebx ", hex(r.ebx), "\n") |
| print("ecx ", hex(r.ecx), "\n") |
| print("edx ", hex(r.edx), "\n") |
| print("edi ", hex(r.edi), "\n") |
| print("esi ", hex(r.esi), "\n") |
| print("ebp ", hex(r.ebp), "\n") |
| print("esp ", hex(r.esp), "\n") |
| print("eip ", hex(r.eip), "\n") |
| print("eflags ", hex(r.eflags), "\n") |
| print("cs ", hex(r.segcs), "\n") |
| print("fs ", hex(r.segfs), "\n") |
| print("gs ", hex(r.seggs), "\n") |
| } |
