/* Low level Alpha interface, for GDB when running native.
- Copyright 1993, 1995, 1996, 1998, 1999, 2000, 2001
+ Copyright (C) 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003, 2007
Free Software Foundation, Inc.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
+#include "gdb_string.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include "regcache.h"
+
+#include "alpha-tdep.h"
+
#include <sys/ptrace.h>
#ifdef __linux__
#include <asm/reg.h>
#include <alpha/ptrace.h>
#else
-#include <machine/reg.h>
+#include <alpha/coreregs.h>
#endif
#include <sys/user.h>
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[MAX_REGISTER_RAW_SIZE];
-
- jb_addr = read_register (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.
fetch_osf_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
- register int regno;
- register int addr;
+ int regno;
+ int addr;
int bad_reg = -1;
- /* Table to map a gdb regnum to an index in the core register section.
- The floating point register values are garbage in OSF/1.2 core files. */
- static int core_reg_mapping[NUM_REGS] =
+ /* Table to map a gdb regnum to an index in the core register
+ section. The floating point register values are garbage in
+ 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 const core_reg_mapping[ALPHA_NUM_REGS] =
{
+#ifdef NCF_REGS
+#define EFL NCF_REGS
+ CF_V0, CF_T0, CF_T1, CF_T2, CF_T3, CF_T4, CF_T5, CF_T6,
+ CF_T7, CF_S0, CF_S1, CF_S2, CF_S3, CF_S4, CF_S5, CF_S6,
+ CF_A0, CF_A1, CF_A2, CF_A3, CF_A4, CF_A5, CF_T8, CF_T9,
+ CF_T10, CF_T11, CF_RA, CF_T12, CF_AT, CF_GP, CF_SP, -1,
+ EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
+ 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, -1
+#else
#define EFL (EF_SIZE / 8)
EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6,
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[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))
{
- supply_register (regno, zerobuf);
+ regcache_raw_supply (current_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 (current_regcache, regno, NULL);
+ continue;
+ }
if (bad_reg < 0)
bad_reg = regno;
}
else
{
- supply_register (regno, core_reg_sect + addr);
+ regcache_raw_supply (current_regcache, regno, core_reg_sect + addr);
}
}
if (bad_reg >= 0)
{
- error ("Register %s not found in core file.", REGISTER_NAME (bad_reg));
+ error (_("Register %s not found in core file."), REGISTER_NAME (bad_reg));
}
}
{
if (core_reg_size < 32 * 8)
{
- error ("Core file register section too small (%u bytes).", core_reg_size);
+ 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
+ switch (which)
{
- /* The General Registers. */
- memcpy (®isters[REGISTER_BYTE (V0_REGNUM)], core_reg_sect, 31 * 8);
- memcpy (®isters[REGISTER_BYTE (PC_REGNUM)], core_reg_sect + 31 * 8, 8);
- memset (®isters[REGISTER_BYTE (ZERO_REGNUM)], 0, 8);
- memset (®ister_valid[V0_REGNUM], 1, 32);
- register_valid[PC_REGNUM] = 1;
+ case 0: /* integer registers */
+ /* PC is in slot 32; UNIQUE is in slot 33, if present. */
+ alpha_supply_int_regs (-1, core_reg_sect, core_reg_sect + 31*8,
+ (core_reg_size >= 33 * 8
+ ? core_reg_sect + 32*8 : NULL));
+ break;
+
+ case 2: /* floating-point registers */
+ /* FPCR is in slot 32. */
+ alpha_supply_fp_regs (-1, core_reg_sect, core_reg_sect + 31*8);
+ break;
+
+ default:
+ break;
}
}
/* Map gdb internal register number to a ptrace ``address''.
- These ``addresses'' are defined in <sys/ptrace.h> */
+ These ``addresses'' are defined in <sys/ptrace.h>, with
+ the exception of ALPHA_UNIQUE_PTRACE_ADDR. */
-#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. */
+#ifndef ALPHA_UNIQUE_PTRACE_ADDR
+#define ALPHA_UNIQUE_PTRACE_ADDR 0
+#endif
CORE_ADDR
register_addr (int regno, CORE_ADDR blockend)
{
- return REGISTER_PTRACE_ADDR (regno);
+ if (regno == PC_REGNUM)
+ return PC;
+ if (regno == ALPHA_UNIQUE_REGNUM)
+ return ALPHA_UNIQUE_PTRACE_ADDR;
+ if (regno < FP0_REGNUM)
+ return GPR_BASE + regno;
+ else
+ return FPR_BASE + regno - FP0_REGNUM;
}
int
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
+/* Locate the UNIQUE value within the gregset_t. */
+#ifndef ALPHA_REGSET_UNIQUE
+#define ALPHA_REGSET_UNIQUE(ptr) NULL
+#endif
+
/*
* See the comment in m68k-tdep.c regarding the utility of these functions.
*/
void
supply_gregset (gdb_gregset_t *gregsetp)
{
- register int regi;
- register long *regp = ALPHA_REGSET_BASE (gregsetp);
- static char zerobuf[MAX_REGISTER_RAW_SIZE] =
- {0};
-
- for (regi = 0; regi < 31; regi++)
- supply_register (regi, (char *) (regp + regi));
+ long *regp = ALPHA_REGSET_BASE (gregsetp);
+ void *unique = ALPHA_REGSET_UNIQUE (gregsetp);
- supply_register (PC_REGNUM, (char *) (regp + 31));
-
- /* Fill inaccessible registers with zero. */
- supply_register (ZERO_REGNUM, zerobuf);
- supply_register (FP_REGNUM, zerobuf);
+ /* PC is in slot 32. */
+ alpha_supply_int_regs (-1, regp, regp + 31, unique);
}
void
fill_gregset (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 = ALPHA_REGSET_BASE (gregsetp);
+ void *unique = ALPHA_REGSET_UNIQUE (gregsetp);
- if ((regno == -1) || (regno == PC_REGNUM))
- *(regp + 31) = *(long *) ®isters[REGISTER_BYTE (PC_REGNUM)];
+ /* PC is in slot 32. */
+ alpha_fill_int_regs (regno, regp, regp + 31, unique);
}
/*
void
supply_fpregset (gdb_fpregset_t *fpregsetp)
{
- register int regi;
- register long *regp = ALPHA_REGSET_BASE (fpregsetp);
+ long *regp = ALPHA_REGSET_BASE (fpregsetp);
- for (regi = 0; regi < 32; regi++)
- supply_register (regi + FP0_REGNUM, (char *) (regp + regi));
+ /* FPCR is in slot 32. */
+ alpha_supply_fp_regs (-1, regp, regp + 31);
}
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
- int regi;
- register long *regp = ALPHA_REGSET_BASE (fpregsetp);
+ long *regp = ALPHA_REGSET_BASE (fpregsetp);
- 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 (regno, regp, regp + 31);
}
#endif
\f
void
_initialize_core_alpha (void)
{
- add_core_fns (&alpha_osf_core_fns);
- add_core_fns (&alpha_elf_core_fns);
+ deprecated_add_core_fns (&alpha_osf_core_fns);
+ deprecated_add_core_fns (&alpha_elf_core_fns);
}