diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-03-27 14:10:53 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-31 08:31:46 (GMT) |
| commit | d77bd2d6a478468127da79e6920b44c467baaa9e (patch) | |
| tree | 40c50c76df6661f7618f39696e52e99de8880003 /arch/c6x | |
| parent | dd6054234bd82065134f62ca0b5e2695c0d859b7 (diff) | |
| download | linux-d77bd2d6a478468127da79e6920b44c467baaa9e.tar.xz | |
c6x/ptrace: Remove useless PTRACE_SETREGSET implementation
commit fb411b837b587a32046dc4f369acb93a10b1def8 upstream.
gpr_set won't work correctly and can never have been tested, and the
correct behaviour is not clear due to the endianness-dependent task
layout.
So, just remove it. The core code will now return -EOPNOTSUPPORT when
trying to set NT_PRSTATUS on this architecture until/unless a correct
implementation is supplied.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/c6x')
| -rw-r--r-- | arch/c6x/kernel/ptrace.c | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/arch/c6x/kernel/ptrace.c b/arch/c6x/kernel/ptrace.c index 3c494e8..a511ac1 100644 --- a/arch/c6x/kernel/ptrace.c +++ b/arch/c6x/kernel/ptrace.c @@ -69,46 +69,6 @@ static int gpr_get(struct task_struct *target, 0, sizeof(*regs)); } -static int gpr_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - int ret; - struct pt_regs *regs = task_pt_regs(target); - - /* Don't copyin TSR or CSR */ - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - ®s, - 0, PT_TSR * sizeof(long)); - if (ret) - return ret; - - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - PT_TSR * sizeof(long), - (PT_TSR + 1) * sizeof(long)); - if (ret) - return ret; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - ®s, - (PT_TSR + 1) * sizeof(long), - PT_CSR * sizeof(long)); - if (ret) - return ret; - - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - PT_CSR * sizeof(long), - (PT_CSR + 1) * sizeof(long)); - if (ret) - return ret; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - ®s, - (PT_CSR + 1) * sizeof(long), -1); - return ret; -} - enum c6x_regset { REGSET_GPR, }; @@ -120,7 +80,6 @@ static const struct user_regset c6x_regsets[] = { .size = sizeof(u32), .align = sizeof(u32), .get = gpr_get, - .set = gpr_set }, }; |