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| author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2010-02-01 20:19:06 +0000 |
|---|---|---|
| committer | Jan Kratochvil <jan.kratochvil@redhat.com> | 2010-02-01 20:19:06 +0000 |
| commit | e4b7f41c57cb9a4c57cb7767f332bb8f99976369 (patch) | |
| tree | 0e02aba03faccdc2207eb78e85cb2ea96ba66744 /gdb/gdbserver/linux-low.c | |
| parent | 7618e12bcb8f15e83c8c6abc5216f520f09bdbf9 (diff) | |
| download | gdb-e4b7f41c57cb9a4c57cb7767f332bb8f99976369.zip gdb-e4b7f41c57cb9a4c57cb7767f332bb8f99976369.tar.gz gdb-e4b7f41c57cb9a4c57cb7767f332bb8f99976369.tar.bz2 | |
gdb/
PR libc/11214:
* linux-low.c (linux_tracefork_child) [!(__UCLIBC__ && HAS_NOMMU)]: New.
(linux_test_for_tracefork): Move `stack' into [__UCLIBC__ && HAS_NOMMU].
(linux_test_for_tracefork) [!(__UCLIBC__ && HAS_NOMMU)]: New.
gdb/testsuite/
PR libc/11214:
* gdb.threads/current-lwp-dead.c: Include features.h.
(HAS_NOMMU): New.
(fn, main): Move CLONE_VM into [__UCLIBC__ && HAS_NOMMU].
Diffstat (limited to 'gdb/gdbserver/linux-low.c')
| -rw-r--r-- | gdb/gdbserver/linux-low.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index fb4aa5c..12c40bc 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -2597,6 +2597,14 @@ linux_tracefork_child (void *arg) { ptrace (PTRACE_TRACEME, 0, 0, 0); kill (getpid (), SIGSTOP); + +#if !(defined(__UCLIBC__) && defined(HAS_NOMMU)) + + if (fork () == 0) + linux_tracefork_grandchild (NULL); + +#else /* defined(__UCLIBC__) && defined(HAS_NOMMU) */ + #ifdef __ia64__ __clone2 (linux_tracefork_grandchild, arg, STACK_SIZE, CLONE_VM | SIGCHLD, NULL); @@ -2604,6 +2612,9 @@ linux_tracefork_child (void *arg) clone (linux_tracefork_grandchild, arg + STACK_SIZE, CLONE_VM | SIGCHLD, NULL); #endif + +#endif /* defined(__UCLIBC__) && defined(HAS_NOMMU) */ + _exit (0); } @@ -2616,18 +2627,31 @@ linux_test_for_tracefork (void) { int child_pid, ret, status; long second_pid; +#if defined(__UCLIBC__) && defined(HAS_NOMMU) char *stack = xmalloc (STACK_SIZE * 4); +#endif /* defined(__UCLIBC__) && defined(HAS_NOMMU) */ linux_supports_tracefork_flag = 0; +#if !(defined(__UCLIBC__) && defined(HAS_NOMMU)) + + child_pid = fork (); + if (child_pid == 0) + linux_tracefork_child (NULL); + +#else /* defined(__UCLIBC__) && defined(HAS_NOMMU) */ + /* Use CLONE_VM instead of fork, to support uClinux (no MMU). */ #ifdef __ia64__ child_pid = __clone2 (linux_tracefork_child, stack, STACK_SIZE, CLONE_VM | SIGCHLD, stack + STACK_SIZE * 2); -#else +#else /* !__ia64__ */ child_pid = clone (linux_tracefork_child, stack + STACK_SIZE, CLONE_VM | SIGCHLD, stack + STACK_SIZE * 2); -#endif +#endif /* !__ia64__ */ + +#endif /* defined(__UCLIBC__) && defined(HAS_NOMMU) */ + if (child_pid == -1) perror_with_name ("clone"); @@ -2696,7 +2720,9 @@ linux_test_for_tracefork (void) } while (WIFSTOPPED (status)); +#if defined(__UCLIBC__) && defined(HAS_NOMMU) free (stack); +#endif /* defined(__UCLIBC__) && defined(HAS_NOMMU) */ } |