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RFA: Don't assume gpr 0 is register number zero


2004-03-31  James Blandy  <jimb@redhat.com>

	* ppc-linux-nat.c (ppc_register_u_addr): Don't assume that r0 is
	register number zero.

Index: gdb/ppc-linux-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/ppc-linux-nat.c,v
retrieving revision 1.29
diff -c -r1.29 ppc-linux-nat.c
*** gdb/ppc-linux-nat.c	15 Mar 2004 21:35:25 -0000	1.29
--- gdb/ppc-linux-nat.c	31 Mar 2004 15:23:24 -0000
***************
*** 133,139 ****
  
    /* General purpose registers occupy 1 slot each in the buffer */
    if (regno >= tdep->ppc_gp0_regnum && regno <= tdep->ppc_gplast_regnum )
!     u_addr =  ((PT_R0 + regno) * wordsize);
  
    /* Floating point regs: eight bytes each in both 32- and 64-bit
       ptrace interfaces.  Thus, two slots each in 32-bit interface, one
--- 133,139 ----
  
    /* General purpose registers occupy 1 slot each in the buffer */
    if (regno >= tdep->ppc_gp0_regnum && regno <= tdep->ppc_gplast_regnum )
!     u_addr = ((regno - tdep->ppc_gp0_regnum + PT_R0) * wordsize);
  
    /* Floating point regs: eight bytes each in both 32- and 64-bit
       ptrace interfaces.  Thus, two slots each in 32-bit interface, one


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