[PATCH 20/24] arm64: ilp32: introduce ilp32-specific sigframe and ucontext

From: Yury Norov ILP32 uses AARCH32 compat structures and syscall handlers for signals. But ILP32 rt_sigframe and ucontext structures differ from both LP64 and AARCH32. >From software point of view ILP32 is typical 32-bit compat ABI, and from hardware point of view,

[PATCH 20/24] arm64: ilp32: introduce ilp32-specific sigframe and ucontext

From: Yury Norov ILP32 uses AARCH32 compat structures and syscall handlers for signals. But ILP32 rt_sigframe and ucontext structures differ from both LP64 and AARCH32. >From software point of view ILP32 is typical 32-bit compat ABI, and from hardware point of view, it's just like LP64. struct