1 // Copyright 2014 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 ppc64 ppc64le 6 7 #include "textflag.h" 8 #include "asm_ppc64x.h" 9 10 // Called by C code generated by cmd/cgo. 11 // func crosscall2(fn func(a unsafe.Pointer, n int32, ctxt uintptr), a unsafe.Pointer, n int32, ctxt uintptr) 12 // Saves C callee-saved registers and calls fn with three arguments. 13 TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 14 // TODO(austin): ABI v1 (fn is probably a function descriptor) 15 16 // Start with standard C stack frame layout and linkage 17 MOVD LR, R0 18 MOVD R0, 16(R1) // Save LR in caller's frame 19 MOVW CR, R0 // Save CR in caller's frame 20 MOVD R0, 8(R1) 21 MOVD R2, 24(R1) // Save TOC in caller's frame 22 23 BL saveregs2<>(SB) 24 25 MOVDU R1, (-288-3*8-FIXED_FRAME)(R1) 26 27 // Initialize Go ABI environment 28 BL runtimereginit(SB) 29 BL runtimeload_g(SB) 30 31 MOVD R3, R12 32 MOVD R3, CTR 33 MOVD R4, FIXED_FRAME+0(R1) 34 MOVD R5, FIXED_FRAME+8(R1) 35 MOVD R6, FIXED_FRAME+16(R1) 36 BL (CTR) 37 38 ADD $(288+3*8+FIXED_FRAME), R1 39 40 BL restoreregs2<>(SB) 41 42 MOVD 24(R1), R2 43 MOVD 8(R1), R0 44 MOVFL R0, $0xff 45 MOVD 16(R1), R0 46 MOVD R0, LR 47 RET 48 49 TEXT saveregs2<>(SB),NOSPLIT|NOFRAME,$0 50 // O=-288; for R in R{14..31}; do echo "\tMOVD\t$R, $O(R1)"|sed s/R30/g/; ((O+=8)); done; for F in F{14..31}; do echo "\tFMOVD\t$F, $O(R1)"; ((O+=8)); done 51 MOVD R14, -288(R1) 52 MOVD R15, -280(R1) 53 MOVD R16, -272(R1) 54 MOVD R17, -264(R1) 55 MOVD R18, -256(R1) 56 MOVD R19, -248(R1) 57 MOVD R20, -240(R1) 58 MOVD R21, -232(R1) 59 MOVD R22, -224(R1) 60 MOVD R23, -216(R1) 61 MOVD R24, -208(R1) 62 MOVD R25, -200(R1) 63 MOVD R26, -192(R1) 64 MOVD R27, -184(R1) 65 MOVD R28, -176(R1) 66 MOVD R29, -168(R1) 67 MOVD g, -160(R1) 68 MOVD R31, -152(R1) 69 FMOVD F14, -144(R1) 70 FMOVD F15, -136(R1) 71 FMOVD F16, -128(R1) 72 FMOVD F17, -120(R1) 73 FMOVD F18, -112(R1) 74 FMOVD F19, -104(R1) 75 FMOVD F20, -96(R1) 76 FMOVD F21, -88(R1) 77 FMOVD F22, -80(R1) 78 FMOVD F23, -72(R1) 79 FMOVD F24, -64(R1) 80 FMOVD F25, -56(R1) 81 FMOVD F26, -48(R1) 82 FMOVD F27, -40(R1) 83 FMOVD F28, -32(R1) 84 FMOVD F29, -24(R1) 85 FMOVD F30, -16(R1) 86 FMOVD F31, -8(R1) 87 88 RET 89 90 TEXT restoreregs2<>(SB),NOSPLIT|NOFRAME,$0 91 // O=-288; for R in R{14..31}; do echo "\tMOVD\t$O(R1), $R"|sed s/R30/g/; ((O+=8)); done; for F in F{14..31}; do echo "\tFMOVD\t$O(R1), $F"; ((O+=8)); done 92 MOVD -288(R1), R14 93 MOVD -280(R1), R15 94 MOVD -272(R1), R16 95 MOVD -264(R1), R17 96 MOVD -256(R1), R18 97 MOVD -248(R1), R19 98 MOVD -240(R1), R20 99 MOVD -232(R1), R21 100 MOVD -224(R1), R22 101 MOVD -216(R1), R23 102 MOVD -208(R1), R24 103 MOVD -200(R1), R25 104 MOVD -192(R1), R26 105 MOVD -184(R1), R27 106 MOVD -176(R1), R28 107 MOVD -168(R1), R29 108 MOVD -160(R1), g 109 MOVD -152(R1), R31 110 FMOVD -144(R1), F14 111 FMOVD -136(R1), F15 112 FMOVD -128(R1), F16 113 FMOVD -120(R1), F17 114 FMOVD -112(R1), F18 115 FMOVD -104(R1), F19 116 FMOVD -96(R1), F20 117 FMOVD -88(R1), F21 118 FMOVD -80(R1), F22 119 FMOVD -72(R1), F23 120 FMOVD -64(R1), F24 121 FMOVD -56(R1), F25 122 FMOVD -48(R1), F26 123 FMOVD -40(R1), F27 124 FMOVD -32(R1), F28 125 FMOVD -24(R1), F29 126 FMOVD -16(R1), F30 127 FMOVD -8(R1), F31 128 129 RET 130
