| Brad Fitzpatrick | 5194744 | 2016-03-01 22:57:46 +0000 | [diff] [blame] | 1 | // Copyright 2013 The Go Authors. All rights reserved. |
| Russ Cox | 2d917c0 | 2014-11-11 17:05:55 -0500 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package runtime |
| 6 | |
| Michael Matloob | 432cb66 | 2015-11-11 12:39:30 -0500 | [diff] [blame] | 7 | import ( |
| 8 | "runtime/internal/sys" |
| 9 | "unsafe" |
| 10 | ) |
| Russ Cox | 2d917c0 | 2014-11-11 17:05:55 -0500 | [diff] [blame] | 11 | |
| 12 | type sigctxt struct { |
| 13 | info *siginfo |
| 14 | ctxt unsafe.Pointer |
| 15 | } |
| 16 | |
| Ian Lance Taylor | d03e8b2 | 2016-10-04 07:11:55 -0700 | [diff] [blame] | 17 | //go:nosplit |
| 18 | //go:nowritebarrierrec |
| Russ Cox | 2d917c0 | 2014-11-11 17:05:55 -0500 | [diff] [blame] | 19 | func (c *sigctxt) regs() *sigcontext { return &(*ucontext)(c.ctxt).uc_mcontext } |
| Ian Lance Taylor | d03e8b2 | 2016-10-04 07:11:55 -0700 | [diff] [blame] | 20 | |
| 21 | func (c *sigctxt) r0() uint32 { return c.regs().r0 } |
| 22 | func (c *sigctxt) r1() uint32 { return c.regs().r1 } |
| 23 | func (c *sigctxt) r2() uint32 { return c.regs().r2 } |
| 24 | func (c *sigctxt) r3() uint32 { return c.regs().r3 } |
| 25 | func (c *sigctxt) r4() uint32 { return c.regs().r4 } |
| 26 | func (c *sigctxt) r5() uint32 { return c.regs().r5 } |
| 27 | func (c *sigctxt) r6() uint32 { return c.regs().r6 } |
| 28 | func (c *sigctxt) r7() uint32 { return c.regs().r7 } |
| 29 | func (c *sigctxt) r8() uint32 { return c.regs().r8 } |
| 30 | func (c *sigctxt) r9() uint32 { return c.regs().r9 } |
| 31 | func (c *sigctxt) r10() uint32 { return c.regs().r10 } |
| 32 | func (c *sigctxt) fp() uint32 { return c.regs().fp } |
| 33 | func (c *sigctxt) ip() uint32 { return c.regs().ip } |
| 34 | func (c *sigctxt) sp() uint32 { return c.regs().sp } |
| 35 | func (c *sigctxt) lr() uint32 { return c.regs().lr } |
| 36 | |
| 37 | //go:nosplit |
| 38 | //go:nowritebarrierrec |
| 39 | func (c *sigctxt) pc() uint32 { return c.regs().pc } |
| 40 | |
| 41 | func (c *sigctxt) cpsr() uint32 { return c.regs().cpsr } |
| Austin Clements | 56462d0 | 2017-09-26 19:42:26 -0400 | [diff] [blame] | 42 | func (c *sigctxt) fault() uintptr { return uintptr(c.regs().fault_address) } |
| Ian Lance Taylor | d03e8b2 | 2016-10-04 07:11:55 -0700 | [diff] [blame] | 43 | func (c *sigctxt) trap() uint32 { return c.regs().trap_no } |
| 44 | func (c *sigctxt) error() uint32 { return c.regs().error_code } |
| 45 | func (c *sigctxt) oldmask() uint32 { return c.regs().oldmask } |
| Russ Cox | 2d917c0 | 2014-11-11 17:05:55 -0500 | [diff] [blame] | 46 | |
| 47 | func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) } |
| Austin Clements | f4a5254 | 2014-11-19 14:56:49 -0500 | [diff] [blame] | 48 | func (c *sigctxt) sigaddr() uint32 { return c.info.si_addr } |
| Russ Cox | 2d917c0 | 2014-11-11 17:05:55 -0500 | [diff] [blame] | 49 | |
| 50 | func (c *sigctxt) set_pc(x uint32) { c.regs().pc = x } |
| 51 | func (c *sigctxt) set_sp(x uint32) { c.regs().sp = x } |
| 52 | func (c *sigctxt) set_lr(x uint32) { c.regs().lr = x } |
| 53 | func (c *sigctxt) set_r10(x uint32) { c.regs().r10 = x } |
| 54 | |
| 55 | func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) } |
| 56 | func (c *sigctxt) set_sigaddr(x uint32) { |
| Michael Matloob | 432cb66 | 2015-11-11 12:39:30 -0500 | [diff] [blame] | 57 | *(*uintptr)(add(unsafe.Pointer(c.info), 2*sys.PtrSize)) = uintptr(x) |
| Russ Cox | 2d917c0 | 2014-11-11 17:05:55 -0500 | [diff] [blame] | 58 | } |
