| 123456789101112131415161718192021222324252627282930313233343536373839 |
- // Copyright 2021 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.
- // Macros for transitioning from the host ABI to Go ABI0.
- //
- // These macros save and restore the callee-saved registers
- // from the stack, but they don't adjust stack pointer, so
- // the user should prepare stack space in advance.
- // SAVE_R19_TO_R28(offset) saves R19 ~ R28 to the stack space
- // of ((offset)+0*8)(RSP) ~ ((offset)+9*8)(RSP).
- //
- // SAVE_F8_TO_F15(offset) saves F8 ~ F15 to the stack space
- // of ((offset)+0*8)(RSP) ~ ((offset)+7*8)(RSP).
- //
- // R29 is not saved because Go will save and restore it.
- #define SAVE_R19_TO_R28(offset) \
- STP (R19, R20), ((offset)+0*8)(RSP) \
- STP (R21, R22), ((offset)+2*8)(RSP) \
- STP (R23, R24), ((offset)+4*8)(RSP) \
- STP (R25, R26), ((offset)+6*8)(RSP) \
- STP (R27, g), ((offset)+8*8)(RSP)
- #define RESTORE_R19_TO_R28(offset) \
- LDP ((offset)+0*8)(RSP), (R19, R20) \
- LDP ((offset)+2*8)(RSP), (R21, R22) \
- LDP ((offset)+4*8)(RSP), (R23, R24) \
- LDP ((offset)+6*8)(RSP), (R25, R26) \
- LDP ((offset)+8*8)(RSP), (R27, g) /* R28 */
- #define SAVE_F8_TO_F15(offset) \
- FSTPD (F8, F9), ((offset)+0*8)(RSP) \
- FSTPD (F10, F11), ((offset)+2*8)(RSP) \
- FSTPD (F12, F13), ((offset)+4*8)(RSP) \
- FSTPD (F14, F15), ((offset)+6*8)(RSP)
- #define RESTORE_F8_TO_F15(offset) \
- FLDPD ((offset)+0*8)(RSP), (F8, F9) \
- FLDPD ((offset)+2*8)(RSP), (F10, F11) \
- FLDPD ((offset)+4*8)(RSP), (F12, F13) \
- FLDPD ((offset)+6*8)(RSP), (F14, F15)
|
