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Check whether kernel supports PTRACE_GETREGSET 

gdb:

2015-06-01  Yao Qi  <yao.qi@linaro.org>

	* arm-linux-nat.c (arm_linux_read_description): Check whether
	kernel supports PTRACE_GETREGSET.
This commit is contained in:
Yao Qi 2015-06-01 12:13:02 +01:00
parent 433bbbf857
commit 7efe48d196
2 changed files with 21 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2015-06-01 Yao Qi <yao.qi@linaro.org>
* arm-linux-nat.c (arm_linux_read_description): Check whether
kernel supports PTRACE_GETREGSET.
2015-06-01 Yao Qi <yao.qi@linaro.org>
* x86-linux-nat.c (have_ptrace_getregset): Move it to ...

16
gdb/arm-linux-nat.c
View File

@ -634,6 +634,22 @@ arm_linux_read_description (struct target_ops *ops)
{
CORE_ADDR arm_hwcap = 0;
if (have_ptrace_getregset == -1)
{
elf_gregset_t gpregs;
struct iovec iov;
int tid = GET_THREAD_ID (inferior_ptid);
iov.iov_base = &gpregs;
iov.iov_len = sizeof (gpregs);
/* Check if PTRACE_GETREGSET works. */
if (ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iov) < 0)
have_ptrace_getregset = 0;
else
have_ptrace_getregset = 1;
}
if (target_auxv_search (ops, AT_HWCAP, &arm_hwcap) != 1)
{
return ops->beneath->to_read_description (ops->beneath);