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| author | Brian Gerst <brgerst@gmail.com> | 2022-06-06 16:37:59 -0400 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-10-19 09:58:49 +0200 |
| commit | 9c36e592b3f899c90b9d0d46ae29fcc065051b96 (patch) | |
| tree | e7760700e98eace8b537cfa3a3bccf07981fbe24 /arch/x86/ia32 | |
| parent | 695c39bc5b8686a6b27254e60fb830f4989f322d (diff) | |
| download | linux-stable-9c36e592b3f899c90b9d0d46ae29fcc065051b96.tar.gz linux-stable-9c36e592b3f899c90b9d0d46ae29fcc065051b96.tar.bz2 linux-stable-9c36e592b3f899c90b9d0d46ae29fcc065051b96.zip | |
x86/signal: Merge get_sigframe()
Adapt the native get_sigframe() function so that the compat signal code
can use it.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lore.kernel.org/r/20220606203802.158958-6-brgerst@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'arch/x86/ia32')
| -rw-r--r-- | arch/x86/ia32/ia32_signal.c | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index a78885e3e85d..e28421f53d44 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -196,40 +196,6 @@ do { \ goto label; \ } while(0) -/* - * Determine which stack to use.. - */ -static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, - size_t frame_size, - void __user **fpstate) -{ - unsigned long sp, fx_aligned, math_size; - - /* Default to using normal stack */ - sp = regs->sp; - - /* This is the X/Open sanctioned signal stack switching. */ - if (ksig->ka.sa.sa_flags & SA_ONSTACK) - sp = sigsp(sp, ksig); - /* This is the legacy signal stack switching. */ - else if (regs->ss != __USER_DS && - !(ksig->ka.sa.sa_flags & SA_RESTORER) && - ksig->ka.sa.sa_restorer) - sp = (unsigned long) ksig->ka.sa.sa_restorer; - - sp = fpu__alloc_mathframe(sp, 1, &fx_aligned, &math_size); - *fpstate = (struct _fpstate_32 __user *) sp; - if (!copy_fpstate_to_sigframe(*fpstate, (void __user *)fx_aligned, - math_size)) - return (void __user *) -1L; - - sp -= frame_size; - /* Align the stack pointer according to the i386 ABI, - * i.e. so that on function entry ((sp + 4) & 15) == 0. */ - sp = ((sp + 4) & -16ul) - 4; - return (void __user *) sp; -} - int ia32_setup_frame(struct ksignal *ksig, struct pt_regs *regs) { compat_sigset_t *set = (compat_sigset_t *) sigmask_to_save(); |