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説明
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What did you do?
main.go package main /* #include <stdio.h> #include <stdlib.h> #include <stdint.h> */ import "C"
//export TestAdd func TestAdd(a C.int32_t, b C.int32_t) C.int32_t { return a + b }
func main() {}
build: CGO_ENABLED=1 GOOS=linux GOARCH=arm GOARM=5 CC=arm-hisiv500-linux-uclibcgnueabi-gcc CXX=arm-hisiv500-linux-uclibcgnueabi-g++ go build -buildmode=c-archive
output dlltest.a
test.c #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <stdint.h> #include <string.h> #include <errno.h> #include <inttypes.h>
extern "C" { int32_t TestAdd(int32_t a, int32_t b); }
int main(int argc, char* argv[]) { int ret = TestAdd(10, 11); printf("TestAdd, ret=%d", ret); }
build: export CC=arm-hisiv500-linux-uclibcgnueabi-gcc export CXX=arm-hisiv500-linux-uclibcgnueabi-g++ $CXX -g test.c -o test dlltest.a -lpthread
output test exe file. file test test: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, with debug_info, not stripped
copy test to ARM board, run it.
What did you expect to see?
output TestAdd, ret=21
What did you see instead?
Segmentation fault
System details
gdb debug output Program received signal SIGSEGV, Segmentation fault. [Switching to LWP 427] runtime.sysargs (argc=0, argv=0x0) at /usr/local/go-linux-arm-bootstrap/src/runtime/os_linux.go:206
go version go1.12.3 linux/amd64
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/csw/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/csw/work/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/work/dlltest/go.mod"
GOROOT/bin/go version: go version go1.12.3 linux/amd64
GOROOT/bin/go tool compile -V: compile version go1.12.3
uname -sr: Linux 4.19.0-041900-generic
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
/lib/x86_64-linux-gnu/libc.so.6: GNU C Library (Ubuntu GLIBC 2.27-3ubuntu1) stable release version 2.27.
gdb --version: GNU gdb (Ubuntu 8.1-0ubuntu3) 8.1.0.20180409-git