[PATCH 2/2] powerpc/signal: Add helper function to fetch quad word aligned pointer
From: Anshuman Khandual <hidden>
Date: 2015-07-06 10:27:18
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
This patch adds one helper function 'vmx_reserve_addr' which computes quad word aligned pointer for vmx_reserve array element in sigcontext structure making the code more readable. Signed-off-by: Anshuman Khandual <redacted> --- arch/powerpc/kernel/signal_64.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index c7c24d2..e8762f5 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c@@ -73,6 +73,12 @@ static const char fmt32[] = KERN_INFO \ static const char fmt64[] = KERN_INFO \ "%s[%d]: bad frame in %s: %016lx nip %016lx lr %016lx\n"; +static elf_vrreg_t __user *vmx_reserve_addr(struct sigcontext __user *sc) +{ + return (elf_vrreg_t __user *) + (((unsigned long)sc->vmx_reserve + 15) & ~0xful); +} + /* * Set up the sigcontext for the signal frame. */
@@ -90,7 +96,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * v_regs pointer or not */ #ifdef CONFIG_ALTIVEC - elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *)(((unsigned long)sc->vmx_reserve + 15) & ~0xful); + elf_vrreg_t __user *v_regs = vmx_reserve_addr(sc); #endif unsigned long msr = regs->msr; long err = 0;
@@ -181,10 +187,8 @@ static long setup_tm_sigcontexts(struct sigcontext __user *sc, * v_regs pointer or not. */ #ifdef CONFIG_ALTIVEC - elf_vrreg_t __user *v_regs = (elf_vrreg_t __user *) - (((unsigned long)sc->vmx_reserve + 15) & ~0xful); - elf_vrreg_t __user *tm_v_regs = (elf_vrreg_t __user *) - (((unsigned long)tm_sc->vmx_reserve + 15) & ~0xful); + elf_vrreg_t __user *v_regs = vmx_reserve_addr(sc); + elf_vrreg_t __user *tm_v_regs = vmx_reserve_addr(tm_sc); #endif unsigned long msr = regs->msr; long err = 0;
--
2.1.0