New files for IA-64 port.

1 files changed, 399 insertions, 0 deletions

diff --git a/gdb/ia64-linux-nat.c b/gdb/ia64-linux-nat.c
new file mode 100644
index 0000000..2a664d5
--- /dev/null
+++ b/gdb/ia64-linux-nat.c
@@ -0,0 +1,399 @@
+/* Functions specific to running gdb native on IA64 running Linux.
+   Copyright 1999 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "defs.h"
+#include "inferior.h"
+#include "target.h"
+#include "gdbcore.h"
+
+#include <signal.h>
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+#ifdef HAVE_SYS_REG_H
+#include <sys/reg.h>
+#endif
+#include <sys/user.h>
+
+#include <asm/ptrace_offsets.h>
+#include <sys/procfs.h>
+
+/* These must match the order of the register names.
+
+   Some sort of lookup table is needed because the offsets associated
+   with the registers are all over the board.  */
+
+static int u_offsets[] =
+  {
+    /* general registers */
+    -1,		/* gr0 not available; i.e, it's always zero */
+    PT_R1,
+    PT_R2,
+    PT_R3,
+    PT_R4,
+    PT_R5,
+    PT_R6,
+    PT_R7,
+    PT_R8,
+    PT_R9,
+    PT_R10,
+    PT_R11,
+    PT_R12,
+    PT_R13,
+    PT_R14,
+    PT_R15,
+    PT_R16,
+    PT_R17,
+    PT_R18,
+    PT_R19,
+    PT_R20,
+    PT_R21,
+    PT_R22,
+    PT_R23,
+    PT_R24,
+    PT_R25,
+    PT_R26,
+    PT_R27,
+    PT_R28,
+    PT_R29,
+    PT_R30,
+    PT_R31,
+    /* gr32 through gr127 not directly available via the ptrace interface */
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    /* Floating point registers */
+    -1, -1,	/* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */
+    PT_F2,
+    PT_F3,
+    PT_F4,
+    PT_F5,
+    PT_F6,
+    PT_F7,
+    PT_F8,
+    PT_F9,
+    PT_F10,
+    PT_F11,
+    PT_F12,
+    PT_F13,
+    PT_F14,
+    PT_F15,
+    PT_F16,
+    PT_F17,
+    PT_F18,
+    PT_F19,
+    PT_F20,
+    PT_F21,
+    PT_F22,
+    PT_F23,
+    PT_F24,
+    PT_F25,
+    PT_F26,
+    PT_F27,
+    PT_F28,
+    PT_F29,
+    PT_F30,
+    PT_F31,
+    PT_F32,
+    PT_F33,
+    PT_F34,
+    PT_F35,
+    PT_F36,
+    PT_F37,
+    PT_F38,
+    PT_F39,
+    PT_F40,
+    PT_F41,
+    PT_F42,
+    PT_F43,
+    PT_F44,
+    PT_F45,
+    PT_F46,
+    PT_F47,
+    PT_F48,
+    PT_F49,
+    PT_F50,
+    PT_F51,
+    PT_F52,
+    PT_F53,
+    PT_F54,
+    PT_F55,
+    PT_F56,
+    PT_F57,
+    PT_F58,
+    PT_F59,
+    PT_F60,
+    PT_F61,
+    PT_F62,
+    PT_F63,
+    PT_F64,
+    PT_F65,
+    PT_F66,
+    PT_F67,
+    PT_F68,
+    PT_F69,
+    PT_F70,
+    PT_F71,
+    PT_F72,
+    PT_F73,
+    PT_F74,
+    PT_F75,
+    PT_F76,
+    PT_F77,
+    PT_F78,
+    PT_F79,
+    PT_F80,
+    PT_F81,
+    PT_F82,
+    PT_F83,
+    PT_F84,
+    PT_F85,
+    PT_F86,
+    PT_F87,
+    PT_F88,
+    PT_F89,
+    PT_F90,
+    PT_F91,
+    PT_F92,
+    PT_F93,
+    PT_F94,
+    PT_F95,
+    PT_F96,
+    PT_F97,
+    PT_F98,
+    PT_F99,
+    PT_F100,
+    PT_F101,
+    PT_F102,
+    PT_F103,
+    PT_F104,
+    PT_F105,
+    PT_F106,
+    PT_F107,
+    PT_F108,
+    PT_F109,
+    PT_F110,
+    PT_F111,
+    PT_F112,
+    PT_F113,
+    PT_F114,
+    PT_F115,
+    PT_F116,
+    PT_F117,
+    PT_F118,
+    PT_F119,
+    PT_F120,
+    PT_F121,
+    PT_F122,
+    PT_F123,
+    PT_F124,
+    PT_F125,
+    PT_F126,
+    PT_F127,
+    /* predicate registers - we don't fetch these individually */
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    /* branch registers */
+    PT_B0,
+    PT_B1,
+    PT_B2,
+    PT_B3,
+    PT_B4,
+    PT_B5,
+    PT_B6,
+    PT_B7,
+    /* virtual frame pointer and virtual return address pointer */
+    -1, -1,
+    /* other registers */
+    PT_PR,
+    PT_CR_IIP,	/* ip */
+    PT_CR_IPSR, /* psr */
+    PT_CR_IFS,	/* cfm */
+    /* kernel registers not visible via ptrace interface (?) */
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    /* hole */
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    PT_AR_RSC,
+    PT_AR_BSP,
+    PT_AR_BSPSTORE,
+    PT_AR_RNAT,
+    -1,
+    -1,		/* Not available: FCR, IA32 floating control register */
+    -1, -1,
+    -1,		/* Not available: EFLAG */
+    -1,		/* Not available: CSD */
+    -1,		/* Not available: SSD */
+    -1,		/* Not available: CFLG */
+    -1,		/* Not available: FSR */
+    -1,		/* Not available: FIR */
+    -1,		/* Not available: FDR */
+    -1,
+    PT_AR_CCV,
+    -1, -1, -1,
+    PT_AR_UNAT,
+    -1, -1, -1,
+    PT_AR_FPSR,
+    -1, -1, -1,
+    -1,		/* Not available: ITC */
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    PT_AR_PFS,
+    PT_AR_LC,
+    -1,		/* Not available: EC, the Epilog Count register */
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+    -1,
+    /* nat bits - not fetched directly; instead we obtain these bits from
+       either rnat or unat or from memory. */
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+    -1, -1, -1, -1, -1, -1, -1, -1,
+  };
+
+CORE_ADDR
+register_addr (regno, blockend)
+     int regno;
+     CORE_ADDR blockend;
+{
+  CORE_ADDR addr;
+
+  if (regno < 0 || regno >= NUM_REGS)
+    error ("Invalid register number %d.", regno);
+
+  if (u_offsets[regno] == -1)
+    addr = 0;
+  else
+    addr = (CORE_ADDR) u_offsets[regno];
+
+  return addr;
+}
+
+int ia64_cannot_fetch_register (regno)
+     int regno;
+{
+  return regno < 0 || regno >= NUM_REGS || u_offsets[regno] == -1;
+}
+
+int ia64_cannot_store_register (regno)
+     int regno;
+{
+  /* Rationale behind not permitting stores to bspstore...
+  
+     The IA-64 architecture provides bspstore and bsp which refer
+     memory locations in the RSE's backing store.  bspstore is the
+     next location which will be written when the RSE needs to write
+     to memory.  bsp is the address at which r32 in the current frame
+     would be found if it were written to the backing store.
+
+     The IA-64 architecture provides read-only access to bsp and
+     read/write access to bspstore (but only when the RSE is in
+     the enforced lazy mode).  It should be noted that stores
+     to bspstore also affect the value of bsp.  Changing bspstore
+     does not affect the number of dirty entries between bspstore
+     and bsp, so changing bspstore by N words will also cause bsp
+     to be changed by (roughly) N as well.  (It could be N-1 or N+1
+     depending upon where the NaT collection bits fall.)
+
+     OTOH, the linux kernel provides read/write access to bsp (and
+     currently read/write access to bspstore as well).  But it
+     is definitely the case that if you change one, the other
+     will change at the same time.  It is more useful to gdb to
+     be able to change bsp.  So in order to prevent strange and
+     undesirable things from happening when a dummy stack frame
+     is popped (after calling an inferior function), we allow
+     bspstore to be read, but not written.  (Note that popping
+     a (generic) dummy stack frame causes all registers that
+     were previously read from the inferior process to be written
+     back.)  */
+
+  return regno < 0 || regno >= NUM_REGS || u_offsets[regno] == -1
+         || regno == IA64_BSPSTORE_REGNUM;
+}
+
+void
+supply_gregset (gregsetp)
+     gregset_t *gregsetp;
+{
+  int regi;
+  greg_t *regp = (greg_t *) gregsetp;
+
+  for (regi = IA64_GR0_REGNUM; regi <= IA64_GR31_REGNUM; regi++)
+    {
+      supply_register (regi, (char *) (regp + (regi - IA64_GR0_REGNUM)));
+    }
+
+  /* FIXME: NAT collection bits are at index 32; gotta deal with these
+     somehow... */
+
+  supply_register (IA64_PR_REGNUM, (char *) (regp + 33));
+
+  for (regi = IA64_BR0_REGNUM; regi <= IA64_BR7_REGNUM; regi++)
+    {
+      supply_register (regi, (char *) (regp + 34 + (regi - IA64_BR0_REGNUM)));
+    }
+
+  supply_register (IA64_IP_REGNUM, (char *) (regp + 42));
+  supply_register (IA64_CFM_REGNUM, (char *) (regp + 43));
+  supply_register (IA64_PSR_REGNUM, (char *) (regp + 44));
+  supply_register (IA64_RSC_REGNUM, (char *) (regp + 45));
+  supply_register (IA64_BSP_REGNUM, (char *) (regp + 46));
+  supply_register (IA64_BSPSTORE_REGNUM, (char *) (regp + 47));
+  supply_register (IA64_RNAT_REGNUM, (char *) (regp + 48));
+  supply_register (IA64_CCV_REGNUM, (char *) (regp + 49));
+  supply_register (IA64_UNAT_REGNUM, (char *) (regp + 50));
+  supply_register (IA64_FPSR_REGNUM, (char *) (regp + 51));
+  supply_register (IA64_PFS_REGNUM, (char *) (regp + 52));
+  supply_register (IA64_LC_REGNUM, (char *) (regp + 53));
+  supply_register (IA64_EC_REGNUM, (char *) (regp + 54));
+}
+
+void
+fill_gregset (gregsetp, regno)
+     gregset_t *gregsetp;
+     int regno;
+{
+  fprintf(stderr, "Warning: fill_gregset not implemented!\n");
+  /* FIXME: Implement later */
+}