• Dsby (59/59) Nov 05 2023 I corss to ARM(contex A7) ,the static this and static ~this does
• Dsby (28/88) Nov 06 2023 我看了下 ldd, 在 arm linux 上没有 “linux-vdso.so.1 ”

Dsby <dushibaiyu yahoo.com> writes:

I corss to ARM(contex A7) ,the static this and static ~this does 
nit work.
Whether the system compiles parameters or what happens, I have no 
idea.
我使用LDC交叉编译到 armv7l linux上，“static 
this”不能执行。可能出现什么情况不调用？会不会是我编译系统参数有影响。

the Code（代码如下）:
``` D
import std.stdio;
// import core.thread;
import core.runtime;

shared static this(){
writeln("run shared static this");
}

static this(){
writeln("run static this");
}

shared static ~this(){
writeln("run shared static ~this");
}

static ~this(){
writeln("run static ~this");
}


void main()
{
	writeln("run main");
	writeln("exit main");

}
```


when I use linux on X86-64（在主机 linux运行效果（Opensuse）：）:
``` Bash
dub run -f
     Starting Performing "debug" build using 
/home/duyu/bin/ldc2-1.34.0-linux-x86_64/bin/ldc2 for x86_64.
     Building dtest ~master: building configuration [application]
      Linking dtest
      Running dtest
run shared static this
run static this
run main
exit main
run static ~this
run shared static ~this

```

But I corss to ARM(contex A7) ,the static this and static ~this 
does nit work.
Whether the system compiles parameters or what happens, I have no 
idea.
In the borad Arm （在ARM   linux 上）。
``` Bash



2023 armv7l GNU/Linux

run main
exit main

```

Dsby <dushibaiyu yahoo.com> writes:

On Monday, 6 November 2023 at 03:23:08 UTC, Dsby wrote:
 I corss to ARM(contex A7) ,the static this and static ~this 
 does nit work.
 Whether the system compiles parameters or what happens, I have 
 no idea.
 我使用LDC交叉编译到 armv7l linux上，“static 
 this”不能执行。可能出现什么情况不调用？会不会是我编译系统参数有影响。

 the Code（代码如下）:
 ``` D
 import std.stdio;
 // import core.thread;
 import core.runtime;

 shared static this(){
 writeln("run shared static this");
 }

 static this(){
 writeln("run static this");
 }

 shared static ~this(){
 writeln("run shared static ~this");
 }

 static ~this(){
 writeln("run static ~this");
 }


 void main()
 {
 	writeln("run main");
 	writeln("exit main");

 }
 ```


 when I use linux on X86-64（在主机 linux运行效果（Opensuse）：）:
 ``` Bash
 dub run -f
     Starting Performing "debug" build using 
 /home/duyu/bin/ldc2-1.34.0-linux-x86_64/bin/ldc2 for x86_64.
     Building dtest ~master: building configuration [application]
      Linking dtest
      Running dtest
 run shared static this
 run static this
 run main
 exit main
 run static ~this
 run shared static ~this

 ```

 But I corss to ARM(contex A7) ,the static this and static ~this 
 does nit work.
 Whether the system compiles parameters or what happens, I have 
 no idea.
 In the borad Arm （在ARM   linux 上）。
 ``` Bash



 2023 armv7l GNU/Linux

 run main
 exit main

 ```

我看了下 ldd, 在 arm linux 上没有 “linux-vdso.so.1 ” 
，可能这就是原因把。我差了下代码，runtime 使用 DSOs
加载的 static this 。

I looked at ldd and there is no "linux-vdso.so.1" on arm linux, 
maybe that's why. I messed up the code. runtime uses DSOs to load 
static this.

IN amd64 ：
``` Bash
export LD_TRACE_LOADED_OBJECTS=1
 ./dtest

         linux-vdso.so.1 (0x00007ffdf5ffd000)
         libm.so.6 => /lib64/libm.so.6 (0x00007fb20b851000)
         libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fb20b82c000)
         libc.so.6 => /lib64/libc.so.6 (0x00007fb20b600000)
         /lib64/ld-linux-x86-64.so.2 (0x00007fb20b95d000)
```

In ARMV7:
``` Bash


         librt.so.1 => /lib/librt.so.1 (0xb6f66000)
         libdl.so.2 => /lib/libdl.so.2 (0xb6f53000)
         libpthread.so.0 => /lib/libpthread.so.0 (0xb6f3f000)
         libm.so.6 => /lib/libm.so.6 (0xb6eca000)
         libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb6ea1000)
         libc.so.6 => /lib/libc.so.6 (0xb6db4000)
         /lib/ld-linux-armhf.so.3 (0xb6f7c000)

```