| // Copyright 2020 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 |
| |
| // Needed for go:linkname. |
| import _ "unsafe" |
| |
| type sigctxt struct { |
| regs generalRegs |
| } |
| |
| func (c *sigctxt) r0() uint64 { return c.regs.r[0] } |
| func (c *sigctxt) r1() uint64 { return c.regs.r[1] } |
| func (c *sigctxt) r2() uint64 { return c.regs.r[2] } |
| func (c *sigctxt) r3() uint64 { return c.regs.r[3] } |
| func (c *sigctxt) r4() uint64 { return c.regs.r[4] } |
| func (c *sigctxt) r5() uint64 { return c.regs.r[5] } |
| func (c *sigctxt) r6() uint64 { return c.regs.r[6] } |
| func (c *sigctxt) r7() uint64 { return c.regs.r[7] } |
| func (c *sigctxt) r8() uint64 { return c.regs.r[8] } |
| func (c *sigctxt) r9() uint64 { return c.regs.r[9] } |
| func (c *sigctxt) r10() uint64 { return c.regs.r[10] } |
| func (c *sigctxt) r11() uint64 { return c.regs.r[11] } |
| func (c *sigctxt) r12() uint64 { return c.regs.r[12] } |
| func (c *sigctxt) r13() uint64 { return c.regs.r[13] } |
| func (c *sigctxt) r14() uint64 { return c.regs.r[14] } |
| func (c *sigctxt) r15() uint64 { return c.regs.r[15] } |
| func (c *sigctxt) r16() uint64 { return c.regs.r[16] } |
| func (c *sigctxt) r17() uint64 { return c.regs.r[17] } |
| func (c *sigctxt) r18() uint64 { return c.regs.r[18] } |
| func (c *sigctxt) r19() uint64 { return c.regs.r[19] } |
| func (c *sigctxt) r20() uint64 { return c.regs.r[20] } |
| func (c *sigctxt) r21() uint64 { return c.regs.r[21] } |
| func (c *sigctxt) r22() uint64 { return c.regs.r[22] } |
| func (c *sigctxt) r23() uint64 { return c.regs.r[23] } |
| func (c *sigctxt) r24() uint64 { return c.regs.r[24] } |
| func (c *sigctxt) r25() uint64 { return c.regs.r[25] } |
| func (c *sigctxt) r26() uint64 { return c.regs.r[26] } |
| func (c *sigctxt) r27() uint64 { return c.regs.r[27] } |
| func (c *sigctxt) r28() uint64 { return c.regs.r[28] } |
| func (c *sigctxt) r29() uint64 { return c.regs.r[29] } |
| func (c *sigctxt) lr() uint64 { return c.regs.lr } |
| func (c *sigctxt) sp() uint64 { return c.regs.sp } |
| |
| //go:nosplit |
| //go:nowritebarrierrec |
| func (c *sigctxt) pc() uint64 { return c.regs.pc } |
| |
| // TODO brunodalbo these only seem to be used to dump regs, what's the right |
| // value here? |
| func (c *sigctxt) pstate() uint64 { return 0 } |
| func (c *sigctxt) fault() uintptr { return 0 } |
| func (c *sigctxt) sigcode() uint64 { return 0 } |
| func (c *sigctxt) sigaddr() uint64 { return 0 } |
| |
| func (c *sigctxt) set_pc(x uint64) { c.regs.pc = x } |
| func (c *sigctxt) set_sp(x uint64) { c.regs.sp = x } |
| func (c *sigctxt) set_lr(x uint64) { c.regs.lr = x } |
| func (c *sigctxt) set_r28(x uint64) { c.regs.r[28] = x } |
| |
| //go:linkname xx_panicmem xx_panicmem |
| func xx_panicmem() |
| |
| func (c *sigctxt) prepareExceptionPanic() { |
| // R1 - LR at moment of fault |
| // R2 - PC at moment of fault |
| c.regs.r[1] = c.lr() |
| c.regs.r[2] = c.pc() |
| c.pushCall(funcPC(xx_panicmem), uintptr(c.pc())) |
| } |
| |
| //go:nosplit |
| //go:linkname setsigsegv |
| func setsigsegv(pc uintptr) { |
| g := getg() |
| g.sig = 0 |
| g.sigpc = pc |
| g.sigcode0 = 0 |
| g.sigcode1 = 0 // TODO: emulate si_addr |
| } |