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[PATCH] gdbserver switch ps_get_thread_area to PTRACE_GETREGSET
- From: Marcus Shawcroft <marcus dot shawcroft at arm dot com>
- To: "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>
- Date: Wed, 06 Feb 2013 17:38:25 +0000
- Subject: [PATCH] gdbserver switch ps_get_thread_area to PTRACE_GETREGSET
This patch switches the aarch64 gdbserver ps_get_thread_area()
implementation from PTRACE_GET_THREAD_AREA to PTRACE_GETREGSET.
OK?
/Marcus
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.
diff --git a/gdb/gdbserver/linux-aarch64-low.c b/gdb/gdbserver/linux-aarch64-low.c
index 7f99887..e56ea80 100644
--- a/gdb/gdbserver/linux-aarch64-low.c
+++ b/gdb/gdbserver/linux-aarch64-low.c
@@ -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;
+ CORE_ADDR reg;
+
+ iovec.iov_base = ®
+ 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;
}
--
1.7.9.5