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Diffstat (limited to 'src/runtime/cgo/asm_arm.s')
| -rw-r--r-- | src/runtime/cgo/asm_arm.s | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/runtime/cgo/asm_arm.s b/src/runtime/cgo/asm_arm.s new file mode 100644 index 000000000..6e57432e3 --- /dev/null +++ b/src/runtime/cgo/asm_arm.s @@ -0,0 +1,24 @@ +// 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 PC, R14 + MOVW 0(R13), PC + MOVM.IAW (R13), [R0, R1, R2, R4, R5, R6, R7, R8, R9, g, R11, R12, PC] |