| // Copyright 2012 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 "textflag.h" |
| |
| /* |
| * void crosscall2(void (*fn)(void*, int32), void*, int32) |
| * Save registers and call fn with two arguments. |
| */ |
| TEXT crosscall2(SB),NOSPLIT,$-4 |
| /* |
| * We still need to save all callee save register as before, and then |
| * push 2 args for fn (R1 and R2). |
| * Also note that at procedure entry in 5c/5g world, 4(R13) will be the |
| * first arg, so we must push another dummy reg (R0) for 0(R13). |
| * Additionally, runtime·load_g will clobber R0, so we need to save R0 |
| * nevertheless. |
| */ |
| MOVM.WP [R0, R1, R2, R4, R5, R6, R7, R8, R9, g, R11, R12, R14], (R13) |
| BL runtime·load_g(SB) |
| MOVW R15, R14 // R15 is PC. |
| MOVW 0(R13), R15 |
| MOVM.IAW (R13), [R0, R1, R2, R4, R5, R6, R7, R8, R9, g, R11, R12, R15] |
