| // Copyright 2016 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. |
| |
| #include "go_asm.h" |
| #include "funcdata.h" |
| #include "textflag.h" |
| |
| TEXT runtime·threadinit(SB),NOSPLIT,$0 |
| // Layout new m scheduler stack on os stack. |
| // TODO: which os stack? do we need to make a new vmo? |
| |
| MOVD m_g0(R0), g |
| MOVD R0, g_m(g) |
| |
| MOVD RSP, R7 |
| MOVD $(-64*1024)(R7), R0 |
| MOVD R0, g_stackguard0(g) |
| MOVD R0, g_stackguard1(g) |
| MOVD R0, (g_stack+stack_lo)(g) |
| MOVD R7, (g_stack+stack_hi)(g) |
| |
| BL runtime·mstart(SB) |
| MOVD $0, R0 |
| MOVD R0, (R0) // boom |
| UNDEF |
| |
| TEXT ·cgocallm0(SB),NOSPLIT,$0-20 |
| MOVD fn+0(FP), R1 |
| MOVD arg+8(FP), R0 |
| |
| MOVD RSP, R19 // R19 is callee-save by C |
| MOVD g, R21 // R21 is callee-save by C |
| MOVD RSP, R7 |
| ADD $-32, R7, R7 |
| AND $~15, R7 |
| MOVD R7, RSP // align stack for C |
| BL R1 |
| |
| MOVD R19, RSP // restore SP |
| MOVD R21, g // restore g |
| RET |
