mirror of https://go.googlesource.com/go
68 lines
1.5 KiB
ArmAsm
68 lines
1.5 KiB
ArmAsm
// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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.file "gcc_loong64.S"
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/*
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* void crosscall1(void (*fn)(void), void (*setg_gcc)(void *g), void *g)
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*
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* Calling into the gc tool chain, where all registers are caller save.
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* Called from standard lp64d ABI, where $r1, $r3, $r23-$r30, and $f24-$f31
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* are callee-save, so they must be saved explicitly, along with $r1 (LR).
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*/
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.globl crosscall1
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crosscall1:
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addi.d $r3, $r3, -160
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st.d $r1, $r3, 0
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st.d $r23, $r3, 8
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st.d $r24, $r3, 16
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st.d $r25, $r3, 24
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st.d $r26, $r3, 32
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st.d $r27, $r3, 40
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st.d $r28, $r3, 48
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st.d $r29, $r3, 56
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st.d $r30, $r3, 64
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st.d $r2, $r3, 72
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st.d $r22, $r3, 80
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fst.d $f24, $r3, 88
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fst.d $f25, $r3, 96
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fst.d $f26, $r3, 104
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fst.d $f27, $r3, 112
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fst.d $f28, $r3, 120
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fst.d $f29, $r3, 128
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fst.d $f30, $r3, 136
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fst.d $f31, $r3, 144
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move $r18, $r4 // save R4
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move $r19, $r6
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jirl $r1, $r5, 0 // call setg_gcc (clobbers R4)
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jirl $r1, $r18, 0 // call fn
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ld.d $r23, $r3, 8
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ld.d $r24, $r3, 16
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ld.d $r25, $r3, 24
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ld.d $r26, $r3, 32
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ld.d $r27, $r3, 40
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ld.d $r28, $r3, 48
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ld.d $r29, $r3, 56
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ld.d $r30, $r3, 64
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ld.d $r2, $r3, 72
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ld.d $r22, $r3, 80
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fld.d $f24, $r3, 88
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fld.d $f25, $r3, 96
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fld.d $f26, $r3, 104
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fld.d $f27, $r3, 112
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fld.d $f28, $r3, 120
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fld.d $f29, $r3, 128
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fld.d $f30, $r3, 136
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fld.d $f31, $r3, 144
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ld.d $r1, $r3, 0
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addi.d $r3, $r3, 160
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jirl $r0, $r1, 0
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#ifdef __ELF__
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.section .note.GNU-stack,"",%progbits
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#endif
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