sh: Fix ptrace fpu state initialisation
Commit 0ea820cf
introduced the PTRACE_GETFPREGS/SETFPREGS cmds,
but gdb-server still accesses the FPU state using the
PTRACE_PEEKUSR/POKEUSR commands. In this case, xstate was not
initialised.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Cc: stable@kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
parent
3f4caa8157
commit
c49b6ecf08
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@ -392,6 +392,9 @@ long arch_ptrace(struct task_struct *child, long request,
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tmp = 0;
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} else {
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unsigned long index;
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ret = init_fpu(child);
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if (ret)
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break;
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index = addr - offsetof(struct user, fpu);
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tmp = ((unsigned long *)child->thread.xstate)
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[index >> 2];
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@ -423,6 +426,9 @@ long arch_ptrace(struct task_struct *child, long request,
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else if (addr >= offsetof(struct user, fpu) &&
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addr < offsetof(struct user, u_fpvalid)) {
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unsigned long index;
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ret = init_fpu(child);
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if (ret)
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break;
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index = addr - offsetof(struct user, fpu);
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set_stopped_child_used_math(child);
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((unsigned long *)child->thread.xstate)
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@ -403,6 +403,9 @@ long arch_ptrace(struct task_struct *child, long request,
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else if ((addr >= offsetof(struct user, fpu)) &&
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(addr < offsetof(struct user, u_fpvalid))) {
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unsigned long index;
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ret = init_fpu(child);
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if (ret)
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break;
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index = addr - offsetof(struct user, fpu);
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tmp = get_fpu_long(child, index);
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} else if (addr == offsetof(struct user, u_fpvalid)) {
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@ -442,6 +445,9 @@ long arch_ptrace(struct task_struct *child, long request,
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else if ((addr >= offsetof(struct user, fpu)) &&
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(addr < offsetof(struct user, u_fpvalid))) {
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unsigned long index;
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ret = init_fpu(child);
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if (ret)
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break;
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index = addr - offsetof(struct user, fpu);
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ret = put_fpu_long(child, index, data);
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}
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