1 // Copyright 2022 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 // Macros for transitioning from the host ABI to Go ABI0. 6 // 7 // These macros save and restore the callee-saved registers 8 // from the stack, but they don't adjust stack pointer, so 9 // the user should prepare stack space in advance. 10 // SAVE_R22_TO_R31(offset) saves R22 ~ R31 to the stack space 11 // of ((offset)+0*8)(R3) ~ ((offset)+9*8)(R3). 12 // 13 // SAVE_F24_TO_F31(offset) saves F24 ~ F31 to the stack space 14 // of ((offset)+0*8)(R3) ~ ((offset)+7*8)(R3). 15 // 16 // Note: g is R22 17 18 #define SAVE_R22_TO_R31(offset) \ 19 MOVV g, ((offset)+(0*8))(R3) \ 20 MOVV R23, ((offset)+(1*8))(R3) \ 21 MOVV R24, ((offset)+(2*8))(R3) \ 22 MOVV R25, ((offset)+(3*8))(R3) \ 23 MOVV R26, ((offset)+(4*8))(R3) \ 24 MOVV R27, ((offset)+(5*8))(R3) \ 25 MOVV R28, ((offset)+(6*8))(R3) \ 26 MOVV R29, ((offset)+(7*8))(R3) \ 27 MOVV R30, ((offset)+(8*8))(R3) \ 28 MOVV R31, ((offset)+(9*8))(R3) 29 30 #define SAVE_F24_TO_F31(offset) \ 31 MOVD F24, ((offset)+(0*8))(R3) \ 32 MOVD F25, ((offset)+(1*8))(R3) \ 33 MOVD F26, ((offset)+(2*8))(R3) \ 34 MOVD F27, ((offset)+(3*8))(R3) \ 35 MOVD F28, ((offset)+(4*8))(R3) \ 36 MOVD F29, ((offset)+(5*8))(R3) \ 37 MOVD F30, ((offset)+(6*8))(R3) \ 38 MOVD F31, ((offset)+(7*8))(R3) 39 40 #define RESTORE_R22_TO_R31(offset) \ 41 MOVV ((offset)+(0*8))(R3), g \ 42 MOVV ((offset)+(1*8))(R3), R23 \ 43 MOVV ((offset)+(2*8))(R3), R24 \ 44 MOVV ((offset)+(3*8))(R3), R25 \ 45 MOVV ((offset)+(4*8))(R3), R26 \ 46 MOVV ((offset)+(5*8))(R3), R27 \ 47 MOVV ((offset)+(6*8))(R3), R28 \ 48 MOVV ((offset)+(7*8))(R3), R29 \ 49 MOVV ((offset)+(8*8))(R3), R30 \ 50 MOVV ((offset)+(9*8))(R3), R31 51 52 #define RESTORE_F24_TO_F31(offset) \ 53 MOVD ((offset)+(0*8))(R3), F24 \ 54 MOVD ((offset)+(1*8))(R3), F25 \ 55 MOVD ((offset)+(2*8))(R3), F26 \ 56 MOVD ((offset)+(3*8))(R3), F27 \ 57 MOVD ((offset)+(4*8))(R3), F28 \ 58 MOVD ((offset)+(5*8))(R3), F29 \ 59 MOVD ((offset)+(6*8))(R3), F30 \ 60 MOVD ((offset)+(7*8))(R3), F31 61