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runtime/cgo: add cgo function call support for loong64
Contributors to the loong64 port are: Weining Lu <luweining@loongson.cn> Lei Wang <wanglei@loongson.cn> Lingqin Gong <gonglingqin@loongson.cn> Xiaolin Zhao <zhaoxiaolin@loongson.cn> Meidan Li <limeidan@loongson.cn> Xiaojuan Zhai <zhaixiaojuan@loongson.cn> Qiyuan Pu <puqiyuan@loongson.cn> Guoqi Chen <chenguoqi@loongson.cn> This port has been updated to Go 1.15.6: https://github.com/loongson/go Updates #46229 Change-Id: I8ef0e7f17d6ada3d2f07c81524136b78457e7795 Reviewed-on: https://go-review.googlesource.com/c/go/+/342319 Run-TryBot: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> Run-TryBot: David Chase <drchase@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>
This commit is contained in:
Xiaodong Liu
Gopher Robot
parent
a7cc865edb
commit
34507e879d
67
src/runtime/cgo/asm_loong64.s
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67
src/runtime/cgo/asm_loong64.s
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@ -0,0 +1,67 @@
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// 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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#include "textflag.h"
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// Called by C code generated by cmd/cgo.
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// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
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// Saves C callee-saved registers and calls cgocallback with three arguments.
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// fn is the PC of a func(a unsafe.Pointer) function.
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TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0
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/*
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* We still need to save all callee save register as before, and then
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* push 3 args for fn (R4, R5, R7), skipping R6.
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* Also note that at procedure entry in gc world, 8(R29) will be the
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* first arg.
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*/
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ADDV $(-8*22), R3
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MOVV R4, (8*1)(R3) // fn unsafe.Pointer
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MOVV R5, (8*2)(R3) // a unsafe.Pointer
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MOVV R7, (8*3)(R3) // ctxt uintptr
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MOVV R23, (8*4)(R3)
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MOVV R24, (8*5)(R3)
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MOVV R25, (8*6)(R3)
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MOVV R26, (8*7)(R3)
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MOVV R27, (8*8)(R3)
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MOVV R28, (8*9)(R3)
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MOVV R29, (8*10)(R3)
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MOVV R30, (8*11)(R3)
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MOVV g, (8*12)(R3)
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MOVV R1, (8*13)(R3)
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MOVD F24, (8*14)(R3)
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MOVD F25, (8*15)(R3)
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MOVD F26, (8*16)(R3)
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MOVD F27, (8*17)(R3)
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MOVD F28, (8*18)(R3)
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MOVD F29, (8*19)(R3)
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MOVD F30, (8*20)(R3)
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MOVD F31, (8*21)(R3)
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// Initialize Go ABI environment
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JAL runtime·load_g(SB)
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JAL runtime·cgocallback(SB)
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MOVV (8*4)(R3), R23
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MOVV (8*5)(R3), R24
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MOVV (8*6)(R3), R25
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MOVV (8*7)(R3), R26
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MOVV (8*8)(R3), R27
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MOVV (8*9)(R3), R28
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MOVV (8*10)(R3), R29
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MOVV (8*11)(R3), R30
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MOVV (8*12)(R3), g
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MOVV (8*13)(R3), R1
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MOVD (8*14)(R3), F24
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MOVD (8*15)(R3), F25
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MOVD (8*16)(R3), F26
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MOVD (8*17)(R3), F27
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MOVD (8*18)(R3), F28
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MOVD (8*19)(R3), F29
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MOVD (8*20)(R3), F30
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MOVD (8*21)(R3), F31
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ADDV $(8*22), R3
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RET
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69
src/runtime/cgo/gcc_linux_loong64.c
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69
src/runtime/cgo/gcc_linux_loong64.c
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// 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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#include <pthread.h>
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#include <string.h>
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#include <signal.h>
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#include "libcgo.h"
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#include "libcgo_unix.h"
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static void *threadentry(void*);
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void (*x_cgo_inittls)(void **tlsg, void **tlsbase);
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static void (*setg_gcc)(void*);
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void
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_cgo_sys_thread_start(ThreadStart *ts)
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{
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pthread_attr_t attr;
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sigset_t ign, oset;
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pthread_t p;
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size_t size;
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int err;
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sigfillset(&ign);
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pthread_sigmask(SIG_SETMASK, &ign, &oset);
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pthread_attr_init(&attr);
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pthread_attr_getstacksize(&attr, &size);
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// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
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ts->g->stackhi = size;
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err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
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pthread_sigmask(SIG_SETMASK, &oset, nil);
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if (err != 0) {
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fatalf("pthread_create failed: %s", strerror(err));
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}
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}
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extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
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static void*
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threadentry(void *v)
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{
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ThreadStart ts;
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ts = *(ThreadStart*)v;
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free(v);
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crosscall1(ts.fn, setg_gcc, (void*)ts.g);
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return nil;
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}
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void
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x_cgo_init(G *g, void (*setg)(void*), void **tlsg, void **tlsbase)
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{
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pthread_attr_t attr;
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size_t size;
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setg_gcc = setg;
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pthread_attr_init(&attr);
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pthread_attr_getstacksize(&attr, &size);
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g->stacklo = (uintptr)&attr - size + 4096;
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pthread_attr_destroy(&attr);
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if (x_cgo_inittls) {
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x_cgo_inittls(tlsg, tlsbase);
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}
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}
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65
src/runtime/cgo/gcc_loong64.S
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65
src/runtime/cgo/gcc_loong64.S
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// 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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/*
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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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