| // Copyright 2021 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. |
| |
| //go:build amd64 && linux && goexperiment.regabiargs |
| // +build amd64,linux,goexperiment.regabiargs |
| |
| package runtime |
| |
| import "internal/abi" |
| |
| // storeRegArgs sets up argument registers in the signal |
| // context state from an abi.RegArgs. |
| // |
| // Both src and dst must be non-nil. |
| func storeRegArgs(dst *sigcontext, src *abi.RegArgs) { |
| dst.rax = uint64(src.Ints[0]) |
| dst.rbx = uint64(src.Ints[1]) |
| dst.rcx = uint64(src.Ints[2]) |
| dst.rdi = uint64(src.Ints[3]) |
| dst.rsi = uint64(src.Ints[4]) |
| dst.r8 = uint64(src.Ints[5]) |
| dst.r9 = uint64(src.Ints[6]) |
| dst.r10 = uint64(src.Ints[7]) |
| dst.r11 = uint64(src.Ints[8]) |
| for i := range src.Floats { |
| dst.fpstate._xmm[i].element[0] = uint32(src.Floats[i] >> 0) |
| dst.fpstate._xmm[i].element[1] = uint32(src.Floats[i] >> 32) |
| } |
| } |
| |
| func loadRegArgs(dst *abi.RegArgs, src *sigcontext) { |
| dst.Ints[0] = uintptr(src.rax) |
| dst.Ints[1] = uintptr(src.rbx) |
| dst.Ints[2] = uintptr(src.rcx) |
| dst.Ints[3] = uintptr(src.rdi) |
| dst.Ints[4] = uintptr(src.rsi) |
| dst.Ints[5] = uintptr(src.r8) |
| dst.Ints[6] = uintptr(src.r9) |
| dst.Ints[7] = uintptr(src.r10) |
| dst.Ints[8] = uintptr(src.r11) |
| for i := range dst.Floats { |
| dst.Floats[i] = uint64(src.fpstate._xmm[i].element[0]) << 0 |
| dst.Floats[i] |= uint64(src.fpstate._xmm[i].element[1]) << 32 |
| } |
| } |
