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Switch AArch64 gdbserver ps_get_thread_area to PTRACE_GETREGSET.

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2013-02-06  Marcus Shawcroft  <marcus.shawcroft@arm.com>

       * linux-aarch64-low.c (ps_get_thread_area): Replace
       PTRACE_GET_THREAD_AREA with PTRACE_GETREGSET.
This commit is contained in:
Marcus Shawcroft 2013-02-07 10:47:40 +00:00
parent 0f5f799a26
commit 55fac6e050
2 changed files with 14 additions and 3 deletions
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5
gdb/gdbserver/ChangeLog
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@ -1,3 +1,8 @@
2013-02-07 Marcus Shawcroft <marcus.shawcroft@arm.com>
* linux-aarch64-low.c (ps_get_thread_area): Replace
PTRACE_GET_THREAD_AREA with PTRACE_GETREGSET.
2013-02-04 Jim MacArthur <jim.macarthur@arm.com>
Marcus Shawcroft <marcus.shawcroft@arm.com>
Nigel Stephens <nigel.stephens@arm.com>

12
gdb/gdbserver/linux-aarch64-low.c
View File

@ -1089,16 +1089,22 @@ aarch64_stopped_by_watchpoint (void)
/* Fetch the thread-local storage pointer for libthread_db. */
ps_err_e
ps_get_thread_area (const struct ps_prochandle * ph,
ps_get_thread_area (const struct ps_prochandle *ph,
lwpid_t lwpid, int idx, void **base)
{
if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
struct iovec iovec;
uint64_t reg;
iovec.iov_base = &reg;
iovec.iov_len = sizeof (reg);
if (ptrace (PTRACE_GETREGSET, lwpid, NT_ARM_TLS, &iovec) != 0)
return PS_ERR;
/* IDX is the bias from the thread pointer to the beginning of the
thread descriptor. It has to be subtracted due to implementation
quirks in libthread_db. */
*base = (void *) ((char *) *base - idx);
*base = (void *) (reg - idx);
return PS_OK;
}