1 // Copyright 2015 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 #include "textflag.h" 6 7 /* 8 * void crosscall2(void (*fn)(void*, int32), void*, int32) 9 * Save registers and call fn with two arguments. 10 */ 11 TEXT crosscall2(SB),NOSPLIT,$-8 12 /* 13 * We still need to save all callee save register as before, and then 14 * push 2 args for fn (R1 and R2). 15 * Also note that at procedure entry in gc world, 8(RSP) will be the 16 * first arg. 17 * TODO(minux): use LDP/STP here if it matters. 18 */ 19 SUB $128, RSP 20 MOVD R1, (8*1)(RSP) 21 MOVD R2, (8*2)(RSP) 22 MOVD R19, (8*3)(RSP) 23 MOVD R20, (8*4)(RSP) 24 MOVD R21, (8*5)(RSP) 25 MOVD R22, (8*6)(RSP) 26 MOVD R23, (8*7)(RSP) 27 MOVD R24, (8*8)(RSP) 28 MOVD R25, (8*9)(RSP) 29 MOVD R26, (8*10)(RSP) 30 MOVD R27, (8*11)(RSP) 31 MOVD g, (8*12)(RSP) 32 MOVD R29, (8*13)(RSP) 33 MOVD R30, (8*14)(RSP) 34 35 MOVD R0, R19 36 37 // Initialize Go ABI environment 38 BL runtimereginit(SB) 39 BL runtimeload_g(SB) 40 BL (R19) 41 42 MOVD (8*1)(RSP), R1 43 MOVD (8*2)(RSP), R2 44 MOVD (8*3)(RSP), R19 45 MOVD (8*4)(RSP), R20 46 MOVD (8*5)(RSP), R21 47 MOVD (8*6)(RSP), R22 48 MOVD (8*7)(RSP), R23 49 MOVD (8*8)(RSP), R24 50 MOVD (8*9)(RSP), R25 51 MOVD (8*10)(RSP), R26 52 MOVD (8*11)(RSP), R27 53 MOVD (8*12)(RSP), g 54 MOVD (8*13)(RSP), R29 55 MOVD (8*14)(RSP), R30 56 ADD $128, RSP 57 RET 58
