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* rs6000-nat.c (exec_one_dummy_insn): Rework to avoid 

ptrace bug in aix4.1.3 on the rs6000.
Fixes inferior function call problem on rs6000-ibm-aix4.
This commit is contained in:
Jeff Law 1996-01-19 08:00:39 +00:00
parent e7894f6b5d
commit a0d76829ac
2 changed files with 14 additions and 1 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
Fri Jan 19 00:59:53 1996 Jeffrey A Law (law@cygnus.com)
* rs6000-nat.c (exec_one_dummy_insn): Rework to avoid
ptrace bug in aix4.1.3 on the rs6000.
Wed Jan 17 13:22:27 1996 Stan Shebs <shebs@andros.cygnus.com>
* remote-hms.c (hms_ops): Add value for to_thread_alive.

10
gdb/rs6000-nat.c
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@ -238,7 +238,15 @@ exec_one_dummy_insn ()
target_insert_breakpoint (DUMMY_INSN_ADDR, shadow_contents);
errno = 0;
ptrace (PT_CONTINUE, inferior_pid, (PTRACE_ARG3_TYPE) DUMMY_INSN_ADDR, 0, 0);
/* You might think this could be done with a single ptrace call, and
you'd be correct for just about every platform I've ever worked
on. However, rs6000-ibm-aix4.1.3 seems to have screwed this up --
the inferior never hits the breakpoint (it's also worth noting
powerpc-ibm-aix4.1.3 works correctly). */
write_pc (DUMMY_INSN_ADDR);
ptrace (PT_CONTINUE, inferior_pid, (PTRACE_ARG3_TYPE)1, 0, 0);
if (errno)
perror ("pt_continue");