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aarch64: add struct _aarch64_ctx to signal.h 

The unwind code in libgcc uses this type for unwinding across signal
handlers. On aarch64 the kernel may place a sequence of structs on the
signal stack on top of the ucontext to provide additional information.
The unwinder only needs the header, but added all the types the kernel
currently defines for this mechanism because they are part of the uapi.
This commit is contained in:
Szabolcs Nagy 2015-03-14 17:40:09 +00:00 committed by Rich Felker
parent 673cab5c56
commit 38bf2d7cc3
1 changed files with 17 additions and 0 deletions
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17
arch/aarch64/bits/signal.h
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@ -17,6 +17,23 @@ typedef struct sigcontext
unsigned long sp, pc, pstate;
long double __reserved[256];
} mcontext_t;
#define FPSIMD_MAGIC 0x46508001
#define ESR_MAGIC 0x45535201
struct _aarch64_ctx {
unsigned int magic;
unsigned int size;
};
struct fpsimd_context {
struct _aarch64_ctx head;
unsigned int fpsr;
unsigned int fpcr;
long double vregs[32];
};
struct esr_context {
struct _aarch64_ctx head;
unsigned long esr;
};
#else
typedef struct {
long double __regs[18+256];