/* Low level Alpha interface, for GDB when running native.
- Copyright 1993, 1995, 1996, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003, 2007, 2008,
+ 2009, 2010 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "gdb_string.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
+#include "procfs.h"
#include "regcache.h"
#include "alpha-tdep.h"
#include <sys/ptrace.h>
-#ifdef __linux__
-#include <asm/reg.h>
-#include <alpha/ptrace.h>
-#else
#include <alpha/coreregs.h>
-#endif
#include <sys/user.h>
-/* Prototypes for local functions. */
-
-static void fetch_osf_core_registers (char *, unsigned, int, CORE_ADDR);
-static void fetch_elf_core_registers (char *, unsigned, int, CORE_ADDR);
-
-/* Size of elements in jmpbuf */
-
-#define JB_ELEMENT_SIZE 8
-
-/* The definition for JB_PC in machine/reg.h is wrong.
- And we can't get at the correct definition in setjmp.h as it is
- not always available (eg. if _POSIX_SOURCE is defined which is the
- default). As the defintion is unlikely to change (see comment
- in <setjmp.h>, define the correct value here. */
-
-#undef JB_PC
-#define JB_PC 2
-
-/* Figure out where the longjmp will land.
- We expect the first arg to be a pointer to the jmp_buf structure from which
- we extract the pc (JB_PC) that we will land at. The pc is copied into PC.
- This routine returns true on success. */
-
-int
-get_longjmp_target (CORE_ADDR *pc)
-{
- CORE_ADDR jb_addr;
- char raw_buffer[ALPHA_MAX_REGISTER_RAW_SIZE];
-
- jb_addr = read_register (ALPHA_A0_REGNUM);
-
- if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, raw_buffer,
- sizeof (CORE_ADDR)))
- return 0;
-
- *pc = extract_address (raw_buffer, sizeof (CORE_ADDR));
- return 1;
-}
/* Extract the register values out of the core file and store
- them where `read_register' will find them.
+ them into REGCACHE.
CORE_REG_SECT points to the register values themselves, read into memory.
CORE_REG_SIZE is the size of that area.
*/
static void
-fetch_osf_core_registers (char *core_reg_sect, unsigned core_reg_size,
+fetch_osf_core_registers (struct regcache *regcache,
+ char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
- register int regno;
- register int addr;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ int regno;
+ int addr;
int bad_reg = -1;
/* Table to map a gdb regnum to an index in the core register
OSF/1.2 core files. OSF5 uses different names for the register
enum list, need to handle two cases. The actual values are the
same. */
- static int core_reg_mapping[ALPHA_NUM_REGS] =
+ static int const core_reg_mapping[ALPHA_NUM_REGS] =
{
#ifdef NCF_REGS
#define EFL NCF_REGS
EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
- CF_PC, -1
+ CF_PC, -1, -1
#else
#define EFL (EF_SIZE / 8)
EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
- EF_PC, -1
+ EF_PC, -1, -1
#endif
};
- static char zerobuf[ALPHA_MAX_REGISTER_RAW_SIZE] =
- {0};
- for (regno = 0; regno < NUM_REGS; regno++)
+ for (regno = 0; regno < ALPHA_NUM_REGS; regno++)
{
- if (CANNOT_FETCH_REGISTER (regno))
+ if (gdbarch_cannot_fetch_register (gdbarch, regno))
{
- supply_register (regno, zerobuf);
+ regcache_raw_supply (regcache, regno, NULL);
continue;
}
addr = 8 * core_reg_mapping[regno];
if (addr < 0 || addr >= core_reg_size)
{
+ /* ??? UNIQUE is a new addition. Don't generate an error. */
+ if (regno == ALPHA_UNIQUE_REGNUM)
+ {
+ regcache_raw_supply (regcache, regno, NULL);
+ continue;
+ }
if (bad_reg < 0)
bad_reg = regno;
}
else
{
- supply_register (regno, core_reg_sect + addr);
+ regcache_raw_supply (regcache, regno, core_reg_sect + addr);
}
}
if (bad_reg >= 0)
{
- error ("Register %s not found in core file.", REGISTER_NAME (bad_reg));
- }
-}
-
-static void
-fetch_elf_core_registers (char *core_reg_sect, unsigned core_reg_size,
- int which, CORE_ADDR reg_addr)
-{
- if (core_reg_size < 32 * 8)
- {
- error ("Core file register section too small (%u bytes).", core_reg_size);
- return;
- }
-
- if (which == 2)
- {
- /* The FPU Registers. */
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], core_reg_sect, 31 * 8);
- memset (®isters[REGISTER_BYTE (FP0_REGNUM + 31)], 0, 8);
- memset (®ister_valid[FP0_REGNUM], 1, 32);
- }
- else
- {
- /* The General Registers. */
- memcpy (®isters[REGISTER_BYTE (ALPHA_V0_REGNUM)], core_reg_sect,
- 31 * 8);
- memcpy (®isters[REGISTER_BYTE (PC_REGNUM)], core_reg_sect + 31 * 8, 8);
- memset (®isters[REGISTER_BYTE (ALPHA_ZERO_REGNUM)], 0, 8);
- memset (®ister_valid[ALPHA_V0_REGNUM], 1, 32);
- register_valid[PC_REGNUM] = 1;
+ error (_("Register %s not found in core file."),
+ gdbarch_register_name (gdbarch, bad_reg));
}
}
-/* Map gdb internal register number to a ptrace ``address''.
- These ``addresses'' are defined in <sys/ptrace.h> */
-
-#define REGISTER_PTRACE_ADDR(regno) \
- (regno < FP0_REGNUM ? GPR_BASE + (regno) \
- : regno == PC_REGNUM ? PC \
- : regno >= FP0_REGNUM ? FPR_BASE + ((regno) - FP0_REGNUM) \
- : 0)
-
-/* Return the ptrace ``address'' of register REGNO. */
-
-CORE_ADDR
-register_addr (int regno, CORE_ADDR blockend)
-{
- return REGISTER_PTRACE_ADDR (regno);
-}
-
-int
-kernel_u_size (void)
-{
- return (sizeof (struct user));
-}
-
-#if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T)
#include <sys/procfs.h>
-
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
*/
void
-supply_gregset (gdb_gregset_t *gregsetp)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
{
- register int regi;
- register long *regp = ALPHA_REGSET_BASE (gregsetp);
- static char zerobuf[ALPHA_MAX_REGISTER_RAW_SIZE] =
- {0};
+ const long *regp = gregsetp->regs;
- for (regi = 0; regi < 31; regi++)
- supply_register (regi, (char *) (regp + regi));
-
- supply_register (PC_REGNUM, (char *) (regp + 31));
-
- /* Fill inaccessible registers with zero. */
- supply_register (ALPHA_ZERO_REGNUM, zerobuf);
- supply_register (FP_REGNUM, zerobuf);
+ /* PC is in slot 32. */
+ alpha_supply_int_regs (regcache, -1, regp, regp + 31, NULL);
}
void
-fill_gregset (gdb_gregset_t *gregsetp, int regno)
+fill_gregset (const struct regcache *regcache,
+ gdb_gregset_t *gregsetp, int regno)
{
- int regi;
- register long *regp = ALPHA_REGSET_BASE (gregsetp);
-
- for (regi = 0; regi < 31; regi++)
- if ((regno == -1) || (regno == regi))
- *(regp + regi) = *(long *) ®isters[REGISTER_BYTE (regi)];
+ long *regp = gregsetp->regs;
- if ((regno == -1) || (regno == PC_REGNUM))
- *(regp + 31) = *(long *) ®isters[REGISTER_BYTE (PC_REGNUM)];
+ /* PC is in slot 32. */
+ alpha_fill_int_regs (regcache, regno, regp, regp + 31, NULL);
}
/*
*/
void
-supply_fpregset (gdb_fpregset_t *fpregsetp)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
{
- register int regi;
- register long *regp = ALPHA_REGSET_BASE (fpregsetp);
+ const long *regp = fpregsetp->regs;
- for (regi = 0; regi < 32; regi++)
- supply_register (regi + FP0_REGNUM, (char *) (regp + regi));
+ /* FPCR is in slot 32. */
+ alpha_supply_fp_regs (regcache, -1, regp, regp + 31);
}
void
-fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
+fill_fpregset (const struct regcache *regcache,
+ gdb_fpregset_t *fpregsetp, int regno)
{
- int regi;
- register long *regp = ALPHA_REGSET_BASE (fpregsetp);
+ long *regp = fpregsetp->regs;
- for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
- {
- if ((regno == -1) || (regno == regi))
- {
- *(regp + regi - FP0_REGNUM) =
- *(long *) ®isters[REGISTER_BYTE (regi)];
- }
- }
+ /* FPCR is in slot 32. */
+ alpha_fill_fp_regs (regcache, regno, regp, regp + 31);
}
-#endif
\f
/* Register that we are able to handle alpha core file formats. */
NULL /* next */
};
-static struct core_fns alpha_elf_core_fns =
-{
- bfd_target_elf_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_elf_core_registers, /* core_read_registers */
- NULL /* next */
-};
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_alpha_nat;
void
-_initialize_core_alpha (void)
+_initialize_alpha_nat (void)
{
- add_core_fns (&alpha_osf_core_fns);
- add_core_fns (&alpha_elf_core_fns);
+ struct target_ops *t;
+
+ t = procfs_target ();
+ add_target (t);
+
+ deprecated_add_core_fns (&alpha_osf_core_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff