| // Copyright 2022 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. | |
| .file "gcc_loong64.S" | |
| /* | |
| * void crosscall1(void (*fn)(void), void (*setg_gcc)(void *g), void *g) | |
| * | |
| * Calling into the gc tool chain, where all registers are caller save. | |
| * Called from standard lp64d ABI, where $r1, $r3, $r22-$r31, and $f24-$f31 | |
| * are callee-save, so they must be saved explicitly, along with $r1 (LR). | |
| */ | |
| .globl crosscall1 | |
| crosscall1: | |
| addi.d $r3, $r3, -160 | |
| st.d $r1, $r3, 0 | |
| st.d $r22, $r3, 8 | |
| st.d $r23, $r3, 16 | |
| st.d $r24, $r3, 24 | |
| st.d $r25, $r3, 32 | |
| st.d $r26, $r3, 40 | |
| st.d $r27, $r3, 48 | |
| st.d $r28, $r3, 56 | |
| st.d $r29, $r3, 64 | |
| st.d $r30, $r3, 72 | |
| st.d $r31, $r3, 80 | |
| fst.d $f24, $r3, 88 | |
| fst.d $f25, $r3, 96 | |
| fst.d $f26, $r3, 104 | |
| fst.d $f27, $r3, 112 | |
| fst.d $f28, $r3, 120 | |
| fst.d $f29, $r3, 128 | |
| fst.d $f30, $r3, 136 | |
| fst.d $f31, $r3, 144 | |
| // r4 = *fn, r5 = *setg_gcc, r6 = *g | |
| move $r23, $r4 // save R4 | |
| move $r4, $r6 | |
| jirl $r1, $r5, 0 // call setg_gcc (clobbers R4) | |
| jirl $r1, $r23, 0 // call fn | |
| ld.d $r22, $r3, 8 | |
| ld.d $r23, $r3, 16 | |
| ld.d $r24, $r3, 24 | |
| ld.d $r25, $r3, 32 | |
| ld.d $r26, $r3, 40 | |
| ld.d $r27, $r3, 48 | |
| ld.d $r28, $r3, 56 | |
| ld.d $r29, $r3, 64 | |
| ld.d $r30, $r3, 72 | |
| ld.d $r31, $r3, 80 | |
| fld.d $f24, $r3, 88 | |
| fld.d $f25, $r3, 96 | |
| fld.d $f26, $r3, 104 | |
| fld.d $f27, $r3, 112 | |
| fld.d $f28, $r3, 120 | |
| fld.d $f29, $r3, 128 | |
| fld.d $f30, $r3, 136 | |
| fld.d $f31, $r3, 144 | |
| ld.d $r1, $r3, 0 | |
| addi.d $r3, $r3, 160 | |
| jirl $r0, $r1, 0 | |
| #ifdef __ELF__ | |
| .section .note.GNU-stack,"",%progbits | |
| #endif | |