syscall: ptrace fixes for s390

    
    Fixes required now that we #include <linux/ptrace.h> in sysinfo.c.
    
    Patch by Andreas Krebbel.
    
    Reviewed-on: https://go-review.googlesource.com/46839

From-SVN: r249712

gcc/go/gofrontend/MERGE

-040dc31406d580e33f82e578a840600fea5004ef
+63b766d67098877496a4b79d7f41e731fbe8abc8
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/go/syscall/syscall_linux_s390.go

@@ -8,9 +8,9 @@ package syscall
 
 import "unsafe"
 
-func (r *PtraceRegs) PC() uint64 { return uint64(r.Psw.Addr) }
+func (r *PtraceRegs) PC() uint64 { return uint64(r.Psw.addr) }
 
-func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = uint32(pc) }
+func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.addr = uint32(pc) }
 
 func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) {
 	return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))

libgo/go/syscall/syscall_linux_s390x.go

@@ -8,9 +8,9 @@ package syscall
 
 import "unsafe"
 
-func (r *PtraceRegs) PC() uint64 { return r.Psw.Addr }
+func (r *PtraceRegs) PC() uint64 { return r.Psw.addr }
 
-func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.Addr = pc }
+func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.addr = pc }
 
 func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) {
 	return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))

libgo/mksysinfo.sh

@@ -310,17 +310,8 @@ upcase_fields () {
 # _user_regs_struct.
 regs=`grep '^type _user_regs_struct struct' gen-sysinfo.go || true`
 if test "$regs" = ""; then
-  # s390
-  regs=`grep '^type __user_regs_struct struct' gen-sysinfo.go || true`
-  if test "$regs" != ""; then
-    # Substructures of __user_regs_struct on s390
-    upcase_fields "__user_psw_struct" "PtracePsw" >> ${OUT} || true
-    upcase_fields "__user_fpregs_struct" "PtraceFpregs" >> ${OUT} || true
-    upcase_fields "__user_per_struct" "PtracePer" >> ${OUT} || true
-  else
-    # mips*
-    regs=`grep '^type _pt_regs struct' gen-sysinfo.go || true`
-  fi
+  # mips*
+  regs=`grep '^type _pt_regs struct' gen-sysinfo.go || true`
 fi
 if test "$regs" != ""; then
   regs=`echo $regs | sed -e 's/type _pt_regs struct//'`