1 // Copyright 2016 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 // +build mips mipsle 6 7 #include "textflag.h" 8 9 /* 10 * void crosscall2(void (*fn)(void*, int32, uintptr), void*, int32, uintptr) 11 * Save registers and call fn with two arguments. 12 */ 13 TEXT crosscall2(SB),NOSPLIT,$-4 14 /* 15 * We still need to save all callee save register as before, and then 16 * push 3 args for fn (R5, R6, R7). 17 * Also note that at procedure entry in gc world, 4(R29) will be the 18 * first arg. 19 */ 20 21 // Space for 9 caller-saved GPR + LR + 6 caller-saved FPR. 22 // O32 ABI allows us to smash 16 bytes argument area of caller frame. 23 #ifndef GOMIPS_softfloat 24 SUBU $(4*14+8*6-16), R29 25 #else 26 SUBU $(4*14-16), R29 // For soft-float, no FPR. 27 #endif 28 MOVW R5, (4*1)(R29) 29 MOVW R6, (4*2)(R29) 30 MOVW R7, (4*3)(R29) 31 MOVW R16, (4*4)(R29) 32 MOVW R17, (4*5)(R29) 33 MOVW R18, (4*6)(R29) 34 MOVW R19, (4*7)(R29) 35 MOVW R20, (4*8)(R29) 36 MOVW R21, (4*9)(R29) 37 MOVW R22, (4*10)(R29) 38 MOVW R23, (4*11)(R29) 39 MOVW g, (4*12)(R29) 40 MOVW R31, (4*13)(R29) 41 #ifndef GOMIPS_softfloat 42 MOVD F20, (4*14)(R29) 43 MOVD F22, (4*14+8*1)(R29) 44 MOVD F24, (4*14+8*2)(R29) 45 MOVD F26, (4*14+8*3)(R29) 46 MOVD F28, (4*14+8*4)(R29) 47 MOVD F30, (4*14+8*5)(R29) 48 #endif 49 JAL runtimeload_g(SB) 50 JAL (R4) 51 52 MOVW (4*4)(R29), R16 53 MOVW (4*5)(R29), R17 54 MOVW (4*6)(R29), R18 55 MOVW (4*7)(R29), R19 56 MOVW (4*8)(R29), R20 57 MOVW (4*9)(R29), R21 58 MOVW (4*10)(R29), R22 59 MOVW (4*11)(R29), R23 60 MOVW (4*12)(R29), g 61 MOVW (4*13)(R29), R31 62 #ifndef GOMIPS_softfloat 63 MOVD (4*14)(R29), F20 64 MOVD (4*14+8*1)(R29), F22 65 MOVD (4*14+8*2)(R29), F24 66 MOVD (4*14+8*3)(R29), F26 67 MOVD (4*14+8*4)(R29), F28 68 MOVD (4*14+8*5)(R29), F30 69 70 ADDU $(4*14+8*6-16), R29 71 #else 72 ADDU $(4*14-16), R29 73 #endif 74 RET 75
