* gencode.c (build_instruction) [MUL]: Cast operands to word64, to

[deliverable/binutils-gdb.git] / gdb / irix4-nat.c

diff --git a/gdb/irix4-nat.c b/gdb/irix4-nat.c
index b13e288b8181203e00c50dbb9773be464137c160..5a6e111222969e8f1064223d0a8621bdd11a2bf5 100644 (file)
--- a/gdb/irix4-nat.c
+++ b/gdb/irix4-nat.c
@@ -1,5 +1,6 @@
 /* Native support for the SGI Iris running IRIX version 4, for GDB.
-   Copyright 1988, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+   Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1995
+   Free Software Foundation, Inc.
    Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
    and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
    Implemented for Irix 4.x by Garrett A. Wollman.
@@ -18,10 +19,11 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "defs.h"
 #include "inferior.h"
+#include "gdbcore.h"
 
 #include <sys/time.h>
 #include <sys/procfs.h>
@@ -33,6 +35,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 typedef unsigned int greg_t;   /* why isn't this defined? */
 
+static void
+fetch_core_registers PARAMS ((char *, unsigned int, int, CORE_ADDR));
+
 /*
  * See the comment in m68k-tdep.c regarding the utility of these functions.
  */
@@ -43,6 +48,7 @@ supply_gregset (gregsetp)
 {
   register int regi;
   register greg_t *regp = (greg_t *)(gregsetp->gp_regs);
+  static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
 
   /* FIXME: somewhere, there should be a #define for the meaning
      of this magic number 32; we should use that. */
@@ -52,7 +58,10 @@ supply_gregset (gregsetp)
   supply_register (PC_REGNUM, (char *)&(gregsetp->gp_pc));
   supply_register (HI_REGNUM, (char *)&(gregsetp->gp_mdhi));
   supply_register (LO_REGNUM, (char *)&(gregsetp->gp_mdlo));
-  supply_register (PS_REGNUM, (char *)&(gregsetp->gp_cause));
+  supply_register (CAUSE_REGNUM, (char *)&(gregsetp->gp_cause));
+
+  /* Fill inaccessible registers with zero.  */
+  supply_register (BADVADDR_REGNUM, zerobuf);
 }
 
 void
@@ -71,8 +80,8 @@ fill_gregset (gregsetp, regno)
   if ((regno == -1) || (regno == PC_REGNUM))
     gregsetp->gp_pc = *(greg_t *) &registers[REGISTER_BYTE (PC_REGNUM)];
 
-  if ((regno == -1) || (regno == PS_REGNUM))
-    gregsetp->gp_cause = *(greg_t *) &registers[REGISTER_BYTE (PS_REGNUM)];
+  if ((regno == -1) || (regno == CAUSE_REGNUM))
+    gregsetp->gp_cause = *(greg_t *) &registers[REGISTER_BYTE (CAUSE_REGNUM)];
 
   if ((regno == -1) || (regno == HI_REGNUM))
     gregsetp->gp_mdhi = *(greg_t *) &registers[REGISTER_BYTE (HI_REGNUM)];
@@ -94,6 +103,7 @@ supply_fpregset (fpregsetp)
      fpregset_t *fpregsetp;
 {
   register int regi;
+  static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
 
   for (regi = 0; regi < 32; regi++)
     supply_register (FP0_REGNUM + regi,
@@ -102,6 +112,7 @@ supply_fpregset (fpregsetp)
   supply_register (FCRCS_REGNUM, (char *)&fpregsetp->fp_csr);
 
   /* FIXME: how can we supply FCRIR_REGNUM?  SGI doesn't tell us. */
+  supply_register (FCRIR_REGNUM, zerobuf);
 }
 
 void
@@ -117,8 +128,8 @@ fill_fpregset (fpregsetp, regno)
       if ((regno == -1) || (regno == regi))
        {
          from = (char *) &registers[REGISTER_BYTE (regi)];
-         to = (char *) &(fpregsetp->fp_r.fp_regs[regi]);
-         bcopy(from, to, REGISTER_RAW_SIZE (regi));
+         to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]);
+         memcpy(to, from, REGISTER_RAW_SIZE (regi));
        }
     }
 
@@ -133,28 +144,29 @@ fill_fpregset (fpregsetp, regno)
    This routine returns true on success. */
 
 int
-get_longjmp_target(pc)
+get_longjmp_target (pc)
      CORE_ADDR *pc;
 {
+  char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
   CORE_ADDR jb_addr;
 
-  jb_addr = read_register(A0_REGNUM);
+  jb_addr = read_register (A0_REGNUM);
 
-  if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, pc,
-                        sizeof(CORE_ADDR)))
+  if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
+                         TARGET_PTR_BIT / TARGET_CHAR_BIT))
     return 0;
 
-  SWAP_TARGET_AND_HOST(pc, sizeof(CORE_ADDR));
+  *pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
 
   return 1;
 }
 
-void
+static void
 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
      char *core_reg_sect;
      unsigned core_reg_size;
      int which;                        /* Unused */
-     unsigned int reg_addr;    /* Unused */
+     CORE_ADDR reg_addr;       /* Unused */
 {
   if (core_reg_size != REGISTER_BYTES)
     {
@@ -164,3 +176,20 @@ fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
 
   memcpy ((char *)registers, core_reg_sect, core_reg_size);
 }
+
+\f
+/* Register that we are able to handle irix4 core file formats.
+   FIXME: is this really bfd_target_unknown_flavour? */
+
+static struct core_fns irix4_core_fns =
+{
+  bfd_target_unknown_flavour,
+  fetch_core_registers,
+  NULL
+};
+
+void
+_initialize_core_irix4 ()
+{
+  add_core_fns (&irix4_core_fns);
+}