Define HAVE_ELF_CORE_DUMP and target_elf_gregset_t in target_elf.h,
mirroring the kernel's elf_gregset_t (ELF_NGREG = 66): r0-r31
[0..31], f0-f31 [32..63], pc [64], unique [65]. Implement
elf_core_copy_regs() in elfload.c to populate the gregset from
CPUAlphaState.
Without this, bprm->core_dump is NULL for Alpha targets. When a
guest signal goes unhandled, dump_core_and_abort() skips the core
write and falls through to die_with_signal(), which re-raises the
signal to the host. The host kernel then writes an x86-64 core file
for the qemu-alpha process instead of an Alpha guest core.
v2: Store thread unique field, same as in Linux kernel. Added by Helge &
suggested by Richard.
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
9db18ed063