[Bug 1202220] [NEW] step function does not work with gdb-mutiarch

[bhs]

Public bug reported:

In cross mode, running gdbserver from 12.04 armhf in the target and
using gdb-multiarch in the host 12.04 x86 ubuntu, we can connect to the
target using suitable gdbinit file but we cannot use step command in
gdb-mutliarch shell. Using once starts the program to be run in the
gdbserver, using it once more the program completion in the target.

Steps to repro:
Test C file: test.c

#include <stdio.h>

void printest()
{
printf("printest function.\n");
printf("printest function.\n");
printf("printest function.\n");
printf("printest function.\n");
}

int main(int argc, char *argv[])
{

printf("Hello World!\n");
printf("Hello World!\n");
printest();
printest();
printf("Hello World!\n");
printf("Hello World!\n");
return 0;
}

Build:
arm-linux-gnueabihf-gcc -g test.c -o test

In target:
gdbserver :1234 ./test

In host:
gdb-multiarch ./test

gdbinit file used has:
set solib-absolute-prefix <path of targetfs used in ARM target> 
set sysroot <path of targetfs used in ARM target> 
set solib-search-path <path of targetfs used in ARM target> /lib:<path of targetfs used in ARM target> /usr/lib
set architecture arm

In the gdb shell:
(gdb)target remote <ip>:1234 
(gdb) step
(gdb) step

Output:
The program terminates in the target and the debugging is stopped.

Also, I verified that using just the latest 12.04-armhf gdb (not the
client/server combination) in the target itself that the same issue does
not reproduce.

** Affects: gdb (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: gdb gdb-multiarch linaro-gdb

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https://bugs.launchpad.net/bugs/1202220

Title:
  step function does not work with gdb-mutiarch

Status in “gdb” package in Ubuntu:
  New

Bug description:
  In cross mode, running gdbserver from 12.04 armhf in the target and
  using gdb-multiarch in the host 12.04 x86 ubuntu, we can connect to
  the target using suitable gdbinit file but we cannot use step command
  in gdb-mutliarch shell. Using once starts the program to be run in the
  gdbserver, using it once more the program completion in the target.

  Steps to repro:
  Test C file: test.c

  #include <stdio.h>

  void printest()
  {
  printf("printest function.\n");
  printf("printest function.\n");
  printf("printest function.\n");
  printf("printest function.\n");
  }

  int main(int argc, char *argv[])
  {

  printf("Hello World!\n");
  printf("Hello World!\n");
  printest();
  printest();
  printf("Hello World!\n");
  printf("Hello World!\n");
  return 0;
  }

  Build:
  arm-linux-gnueabihf-gcc -g test.c -o test

  In target:
  gdbserver :1234 ./test

  In host:
  gdb-multiarch ./test

  gdbinit file used has:
  set solib-absolute-prefix <path of targetfs used in ARM target> 
  set sysroot <path of targetfs used in ARM target> 
  set solib-search-path <path of targetfs used in ARM target> /lib:<path of targetfs used in ARM target> /usr/lib
  set architecture arm

  In the gdb shell:
  (gdb)target remote <ip>:1234 
  (gdb) step
  (gdb) step

  Output:
  The program terminates in the target and the debugging is stopped.

  Also, I verified that using just the latest 12.04-armhf gdb (not the
  client/server combination) in the target itself that the same issue
  does not reproduce.

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