r249472 - in /trunk: gcc/go/gofrontend/MERGE li...

[ian@gcc.gnu.org]

Author: ian
Date: Wed Jun 21 21:42:41 2017
New Revision: 249472

URL: https://gcc.gnu.org/viewcvs?rev=249472&root=gcc&view=rev
Log:
    libgo, syscall: fix ptrace implementation on MIPS
    
    On MIPS, the correct structure for PtraceRegs is 'struct pt_regs' which
    is declared in linux/ptrace.h. Previously no PtraceRegs structure was
    created on MIPS because 'struct user_regs_struct' doesn't exist there.
    
    Fallback to using pt_regs when the PtraceRegs structure is generated in
    mksysinfo.sh, then adjust syscall_linux_mipsx.go to read the program
    counter from the correct field.
    
    In addition, implement PtraceGetRegs and PtraceSetRegs on all 3 ABI
    variants.
    
    syscall_linux_mips64x.go can now be removed since the ptrace code on
    all 3 ABIs is identical.
    
    Reviewed-on: https://go-review.googlesource.com/46150

Modified:
    trunk/gcc/go/gofrontend/MERGE
    trunk/libgo/config.h.in
    trunk/libgo/configure
    trunk/libgo/configure.ac
    trunk/libgo/go/syscall/syscall_linux_mipsx.go
    trunk/libgo/mksysinfo.sh
    trunk/libgo/sysinfo.c