[parisc-linux] Re: new debs built, c++ is broken

[Alan Modra]

On Fri, 16 Mar 2001, Alan Modra wrote:
> On Fri, 16 Mar 2001, Alan Modra wrote:
> > Unfortunately, c++ progs still crash due to the unwind frame info list
> > head being trashed.
> 
> Merging with current gcc_3.0 didn't cure the problem either.

Lots of stepi's and strategically placed breakpoints under gdb revealed
that libgcc2:init_reg_size_table was the culprit trashing memory.  From
there it's plain sailing...

I reckon this patch will cure the problem, which I'm testing right
now.  New gcc debs again, I'm afraid.  Anybody like to voice an opinion
for/against moving to the merge I've just done with sourceware
gcc_3.0?  Looks good so far.

Index: gcc/config/pa/pa32-regs.h
===================================================================
RCS file: /home/cvs/parisc/gcc/gcc/config/pa/pa32-regs.h,v
retrieving revision 1.2
diff -u -p -r1.2 pa32-regs.h
--- pa32-regs.h	2001/02/19 13:54:41	1.2
+++ pa32-regs.h	2001/03/16 03:21:41
@@ -188,6 +188,11 @@
   ((REGNO) <= 31 ? (REGNO) :						\
    ((REGNO) <= 87 ? (REGNO) + 40 : 32))
 
+/* We must not use the DBX register numbers for the DWARF 2 CFA column
+   numbers because that maps to numbers beyond FIRST_PSEUDO_REGISTER.
+   Instead use the identity mapping.  */
+#define DWARF_FRAME_REGNUM(REG) REG
+
 /* Define the classes of registers for register constraints in the
    machine description.  Also define ranges of constants.
 
Index: gcc/config/pa/pa64-regs.h
===================================================================
RCS file: /home/cvs/parisc/gcc/gcc/config/pa/pa64-regs.h,v
retrieving revision 1.2
diff -u -p -r1.2 pa64-regs.h
--- pa64-regs.h	2001/02/19 13:54:42	1.2
+++ pa64-regs.h	2001/03/16 03:21:41
@@ -176,6 +176,11 @@ Boston, MA 02111-1307, USA.  */
   ((REGNO) <= 31 ? (REGNO) :						\
    ((REGNO) > 31 && (REGNO) <= 60 ? (REGNO - 32) * 2 + 72 : 32))
 
+/* We must not use the DBX register numbers for the DWARF 2 CFA column
+   numbers because that maps to numbers beyond FIRST_PSEUDO_REGISTER.
+   Instead use the identity mapping.  */
+#define DWARF_FRAME_REGNUM(REG) REG
+
 /* Define the classes of registers for register constraints in the
    machine description.  Also define ranges of constants.
 
Alan
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