2004-03-22 Andrew Cagney <cagney@redhat.com>

[deliverable/binutils-gdb.git] / gdb / sparcnbsd-tdep.c

diff --git a/gdb/sparcnbsd-tdep.c b/gdb/sparcnbsd-tdep.c
index 21b3aca8c65b01962198ff9228d093f59b1739db..b1be7eb5b12b99fbdbd291222aeb852456d580d0 100644 (file)
--- a/gdb/sparcnbsd-tdep.c
+++ b/gdb/sparcnbsd-tdep.c
@@ -50,16 +50,18 @@ const struct sparc_gregset sparc32nbsd_gregset =
   -1                           /* %l0 */
 };
 
-/* Unlike other NetBSD implementations, the SPARC port historically
-   used .reg and .reg2 (see bfd/netbsd-core.c), and as such, we can
-   share one routine for a.out and ELF core files.  */
-
 static void
 sparc32nbsd_supply_gregset (const struct regset *regset,
                            struct regcache *regcache,
                            int regnum, const void *gregs, size_t len)
 {
   sparc32_supply_gregset (regset->descr, regcache, regnum, gregs);
+
+  /* Traditional NetBSD core files don't use multiple register sets.
+     Instead, the general-purpose and floating-point registers are
+     lumped together in a single section.  */
+  if (len >= 212)
+    sparc32_supply_fpregset (regcache, regnum, (const char *) gregs + 80);
 }
 
 static void
@@ -139,6 +141,20 @@ sparc32nbsd_sigcontext_saved_regs (struct frame_info *next_frame)
        regnum <= SPARC_I7_REGNUM; regnum++, addr += 4)
     saved_regs[regnum].addr = addr;
 
+  /* Handle StackGhost.  */
+  {
+    ULONGEST wcookie = sparc_fetch_wcookie ();
+
+    if (wcookie != 0)
+      {
+       ULONGEST i7;
+
+       addr = saved_regs[SPARC_I7_REGNUM].addr;
+       i7 = get_frame_memory_unsigned (next_frame, addr, 4);
+       trad_frame_set_value (saved_regs, SPARC_I7_REGNUM, i7 ^ wcookie);
+      }
+  }
+
   /* The floating-point registers are only saved if the EF bit in %prs
      has been set.  */
 
@@ -261,9 +277,11 @@ sparc32nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->gregset = XMALLOC (struct regset);
   tdep->gregset->descr = &sparc32nbsd_gregset;
   tdep->gregset->supply_regset = sparc32nbsd_supply_gregset;
+  tdep->sizeof_gregset = 20 * 4;
 
   tdep->fpregset = XMALLOC (struct regset);
   tdep->fpregset->supply_regset = sparc32nbsd_supply_fpregset;
+  tdep->sizeof_fpregset = 33 * 4;
 
   set_gdbarch_pc_in_sigtramp (gdbarch, sparc32nbsd_pc_in_sigtramp);
   frame_unwind_append_sniffer (gdbarch, sparc32nbsd_sigtramp_frame_sniffer);