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MIPS: ptrace: Fix user pt_regs definition, use in ptrace_{get, set}regs()

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In uapi/asm/ptrace.h, a user version of pt_regs is defined wrapped in
ifndef __KERNEL__. This structure definition does not match anything
used by any kernel API, in particular it does not match the format used
by PTRACE_{GET,SET}REGS.

Therefore, replace the structure definition with one matching what is
used by PTRACE_{GET,SET}REGS. The format used by these is the same for
both 32-bit and 64-bit.

Also, change the implementation of PTRACE_{GET,SET}REGS to use this new
structure definition. The structure is renamed to user_pt_regs when
__KERNEL__ is defined to avoid conflicts with the kernel's own pt_regs.

Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7457/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Alex Smith
2014-07-23 14:40:13 +01:00
committed by Ralf Baechle
parent 457ed7702d
commit a79ebea620
4 changed files with 35 additions and 28 deletions
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6
arch/mips/kernel/ptrace32.c
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@@ -256,11 +256,13 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
}
case PTRACE_GETREGS:
ret = ptrace_getregs(child, (__s64 __user *) (__u64) data);
ret = ptrace_getregs(child,
(struct user_pt_regs __user *) (__u64) data);
break;
case PTRACE_SETREGS:
ret = ptrace_setregs(child, (__s64 __user *) (__u64) data);
ret = ptrace_setregs(child,
(struct user_pt_regs __user *) (__u64) data);
break;
case PTRACE_GETFPREGS: