[src/trunk]: src/external/gpl3/gdb/dist/gdb Supply MIPS_ZERO_REGNUM and MIPS_...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6d9d5da7c2df
branches:  trunk
changeset: 782460:6d9d5da7c2df
user:      skrll <skrll%NetBSD.org@localhost>
date:      Sat Nov 03 15:06:55 2012 +0000

description:
Supply MIPS_ZERO_REGNUM and MIPS_UNUSED_REGNUM (as zero). Idea stolen from
mips-linux-tdep.c

diffstat:

 external/gpl3/gdb/dist/gdb/mipsnbsd-tdep.c |  17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)

diffs (48 lines):

diff -r 8a50b7f15c4b -r 6d9d5da7c2df external/gpl3/gdb/dist/gdb/mipsnbsd-tdep.c
--- a/external/gpl3/gdb/dist/gdb/mipsnbsd-tdep.c        Sat Nov 03 14:59:44 2012 +0000
+++ b/external/gpl3/gdb/dist/gdb/mipsnbsd-tdep.c        Sat Nov 03 15:06:55 2012 +0000
@@ -83,15 +83,23 @@
                         const void *gregs, size_t len)
 {
   size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
+  char zerobuf[MAX_REGISTER_SIZE];
   const char *regs = gregs;
   int i;
 
+  memset (zerobuf, 0, MAX_REGISTER_SIZE);
+
   gdb_assert (len >= MIPSNBSD_NUM_GREGS * regsize);
 
   for (i = 0; i <= MIPS_PC_REGNUM; i++)
     {
       if (regnum == i || regnum == -1)
-       regcache_raw_supply (regcache, i, regs + i * regsize);
+        {
+          if (i == MIPS_ZERO_REGNUM || i == MIPS_UNUSED_REGNUM)
+            regcache_raw_supply (regcache, i, zerobuf);
+          else
+           regcache_raw_supply (regcache, i, regs + i * regsize);
+       }
     }
 
   if (len >= (MIPSNBSD_NUM_GREGS + MIPSNBSD_NUM_FPREGS) * regsize)
@@ -144,13 +152,18 @@
 mipsnbsd_supply_reg (struct regcache *regcache, const char *regs, int regno)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  char zerobuf[MAX_REGISTER_SIZE];
   int i;
 
+  memset (zerobuf, 0, MAX_REGISTER_SIZE);
+
   for (i = 0; i <= gdbarch_pc_regnum (gdbarch); i++)
     {
       if (regno == i || regno == -1)
        {
-         if (gdbarch_cannot_fetch_register (gdbarch, i))
+          if (i == MIPS_ZERO_REGNUM || i == MIPS_UNUSED_REGNUM)
+            regcache_raw_supply (regcache, i, zerobuf);
+         else if (gdbarch_cannot_fetch_register (gdbarch, i))
            regcache_raw_supply (regcache, i, NULL);
          else
             regcache_raw_supply (regcache, i,