arm64: signal: return struct rt_sigframe from get_sigframe
We only have one type of frame (rt_sigframe) for arm64, so just return that type directly and dispense with the framesize argument, which is presumably a hangover from code copied from arch/arm/. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -202,11 +202,11 @@ static int setup_sigframe(struct rt_sigframe __user *sf,
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return err;
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}
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static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
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int framesize)
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static struct rt_sigframe __user *get_sigframe(struct k_sigaction *ka,
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struct pt_regs *regs)
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{
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unsigned long sp, sp_top;
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void __user *frame;
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struct rt_sigframe __user *frame;
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sp = sp_top = regs->sp;
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@ -216,8 +216,8 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
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if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp))
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sp = sp_top = current->sas_ss_sp + current->sas_ss_size;
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sp = (sp - framesize) & ~15;
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frame = (void __user *)sp;
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sp = (sp - sizeof(struct rt_sigframe)) & ~15;
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frame = (struct rt_sigframe __user *)sp;
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/*
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* Check that we can actually write to the signal frame.
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@ -253,7 +253,7 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
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stack_t stack;
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int err = 0;
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frame = get_sigframe(ka, regs, sizeof(*frame));
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frame = get_sigframe(ka, regs);
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if (!frame)
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return 1;
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