[GitHub] [incubator-nuttx] masayuki2009 commented on pull request #4207: arch: sim: Workaround to make the IPI work on macOS

[GitBox <gi...@apache.org>]

masayuki2009 commented on pull request #4207:
URL: https://github.com/apache/incubator-nuttx/pull/4207#issuecomment-884888660


   @xiaoxiang781216 
   
   After more investigations, I found that ```pthread_attr_init()``` in ```sim_cpu_start()``` is linked incorrectly for both Linux and macOS. The symbol should locate in the host library but it calls the library on NuttX. Do you know why the symbol is linked incorrectly?
   
   ```
     pthread_attr_t attr; 
     pthread_attr_init(&attr); 
      3c875: 48 8d 85 50 ff ff ff lea -0xb0(%rbp),%rax 
      3c87c: 48 89 c7 mov %rax,%rdi 
      3c87f: e8 64 98 fe ff callq 260e8 <pthread_attr_init> <== should be @plt
     pthread_attr_setstack(&attr, stack, size); 
      3c884: 48 8b 95 28 ff ff ff mov -0xd8(%rbp),%rdx 
      3c88b: 48 8b 8d 30 ff ff ff mov -0xd0(%rbp),%rcx 
      3c892: 48 8d 85 50 ff ff ff lea -0xb0(%rbp),%rax 
      3c899: 48 89 ce mov %rcx,%rsi 
      3c89c: 48 89 c7 mov %rax,%rdi 
      3c89f: e8 6c 64 fc ff callq 2d10 <pt...@plt> 
     ret = pthread_create(&g_cpu_thread[cpu], 
      3c8a4: 8b 85 3c ff ff ff mov -0xc4(%rbp),%eax 
      3c8aa: 48 98 cltq 
      3c8ac: 48 8d 14 c5 00 00 00 lea 0x0(,%rax,8),%rdx 
      3c8b3: 00 
      3c8b4: 48 8d 05 85 77 21 00 lea 0x217785(%rip),%rax # 254040 <g_cpu_thread> 
      3c8bb: 48 8d 3c 02 lea (%rdx,%rax,1),%rdi 
      3c8bf: 48 8d 55 90 lea -0x70(%rbp),%rdx 
      3c8c3: 48 8d 85 50 ff ff ff lea -0xb0(%rbp),%rax 
      3c8ca: 48 89 d1 mov %rdx,%rcx 
      3c8cd: 48 8d 15 35 fe ff ff lea -0x1cb(%rip),%rdx # 3c709 <sim_idle_trampoline> 
      3c8d4: 48 89 c6 mov %rax,%rsi 
      3c8d7: e8 04 64 fc ff callq 2ce0 <pt...@plt> 
      3c8dc: 89 85 4c ff ff ff mov %eax,-0xb4(%rbp) 
                          &attr, sim_idle_trampoline, &cpuinfo); 
   ```


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: commits-unsubscribe@nuttx.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org