| // 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. |
| |
| /* |
| * 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, $r23-$r30, 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 $r23, $r3, 8 |
| st.d $r24, $r3, 16 |
| st.d $r25, $r3, 24 |
| st.d $r26, $r3, 32 |
| st.d $r27, $r3, 40 |
| st.d $r28, $r3, 48 |
| st.d $r29, $r3, 56 |
| st.d $r30, $r3, 64 |
| st.d $r2, $r3, 72 |
| st.d $r22, $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 |
| |
| move $r18, $r4 // save R4 |
| move $r19, $r6 |
| jirl $r1, $r5, 0 // call setg_gcc (clobbers R4) |
| jirl $r1, $r18, 0 // call fn |
| |
| ld.d $r23, $r3, 8 |
| ld.d $r24, $r3, 16 |
| ld.d $r25, $r3, 24 |
| ld.d $r26, $r3, 32 |
| ld.d $r27, $r3, 40 |
| ld.d $r28, $r3, 48 |
| ld.d $r29, $r3, 56 |
| ld.d $r30, $r3, 64 |
| ld.d $r2, $r3, 72 |
| ld.d $r22, $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 |
