* ppc-linux-nat.c (ppc_register_u_addr): Correctly compute u-area

register offsets for both the 32- and 64-bit interfaces.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 81bd207..343b576 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,8 @@
 2003-06-12  Jim Blandy  <jimb@redhat.com>
 
+       * ppc-linux-nat.c (ppc_register_u_addr): Correctly compute u-area
+       register offsets for both the 32- and 64-bit interfaces.
+
        Actually finish the job started by my change of 2003-05-29.
        * config/powerpc/tm-linux.h (SKIP_TRAMPOLINE_CODE): Remove the
        other #definition of this.

diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c
index e164919..d0bff2e 100644 (file)
--- a/gdb/ppc-linux-nat.c
+++ b/gdb/ppc-linux-nat.c
@@ -127,34 +127,37 @@ ppc_register_u_addr (int regno)
 {
   int u_addr = -1;
   struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+  int wordsize = tdep->wordsize;
 
   /* 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) * 4);
+    u_addr =  ((PT_R0 + regno) * wordsize);
 
-  /* Floating point regs: 2 slots each */
+  /* Floating point regs: eight bytes each in both 32- and 64-bit
+     ptrace interfaces.  Thus, two slots each in 32-bit interface, one
+     slot each in 64-bit interface.  */
   if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
-    u_addr = ((PT_FPR0 + (regno - FP0_REGNUM) * 2) * 4);
+    u_addr = (PT_FPR0 * wordsize) + ((regno - FP0_REGNUM) * 8);
 
   /* UISA special purpose registers: 1 slot each */
   if (regno == PC_REGNUM)
-    u_addr = PT_NIP * 4;
+    u_addr = PT_NIP * wordsize;
   if (regno == tdep->ppc_lr_regnum)
-    u_addr = PT_LNK * 4;
+    u_addr = PT_LNK * wordsize;
   if (regno == tdep->ppc_cr_regnum)
-    u_addr = PT_CCR * 4;
+    u_addr = PT_CCR * wordsize;
   if (regno == tdep->ppc_xer_regnum)
-    u_addr = PT_XER * 4;
+    u_addr = PT_XER * wordsize;
   if (regno == tdep->ppc_ctr_regnum)
-    u_addr = PT_CTR * 4;
+    u_addr = PT_CTR * wordsize;
 #ifdef PT_MQ
   if (regno == tdep->ppc_mq_regnum)
-    u_addr = PT_MQ * 4;
+    u_addr = PT_MQ * wordsize;
 #endif
   if (regno == tdep->ppc_ps_regnum)
-    u_addr = PT_MSR * 4;
+    u_addr = PT_MSR * wordsize;
   if (regno == tdep->ppc_fpscr_regnum)
-    u_addr = PT_FPSCR * 4;
+    u_addr = PT_FPSCR * wordsize;
 
   return u_addr;
 }