/* Functions specific to running gdb native on a SPARC running SunOS4.
- Copyright 1989, 1992, 1993, 1994, 1996 Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright 1989, 1992, 1993, 1994, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003 Free Software Foundation, Inc.
-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 file is part of GDB.
-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.
+ 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.
-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. */
+ 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 "regcache.h"
+
+#include "sparc-tdep.h"
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
#include <signal.h>
#include <sys/ptrace.h>
-#include <sys/wait.h>
+#include "gdb_wait.h"
+#ifdef __linux__
+#include <asm/reg.h>
+#else
#include <machine/reg.h>
+#endif
#include <sys/user.h>
/* We don't store all registers immediately when requested, since they
marking them as valid so we won't fetch them again. */
void
-fetch_inferior_registers (regno)
- int regno;
+fetch_inferior_registers (int regno)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
int i;
+ int fetch_pid;
+
+ /* NOTE: cagney/2002-12-03: This code assumes that the currently
+ selected light weight processes' registers can be written
+ directly into the selected thread's register cache. This works
+ fine when given an 1:1 LWP:thread model (such as found on
+ GNU/Linux) but will, likely, have problems when used on an N:1
+ (userland threads) or N:M (userland multiple LWP) model. In the
+ case of the latter two, the LWP's registers do not necessarily
+ belong to the selected thread (the LWP could be in the middle of
+ executing the thread switch code).
+
+ These functions should instead be paramaterized with an explicit
+ object (struct regcache, struct thread_info?) into which the LWPs
+ registers can be written. */
+
+ fetch_pid = TIDGET (inferior_ptid);
+ if (fetch_pid == 0)
+ fetch_pid = PIDGET (inferior_ptid);
/* We should never be called with deferred stores, because a prerequisite
for writing regs is to have fetched them all (PREPARE_TO_STORE), sigh. */
- if (deferred_stores) abort();
+ if (deferred_stores)
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
DO_DEFERRED_STORES;
and the stack pointer has not yet been fetched,
we have to do that first, since they're found in memory relative
to the stack pointer. */
- if (regno < O7_REGNUM /* including -1 */
+ if (regno < O7_REGNUM /* including -1 */
|| regno >= Y_REGNUM
- || (!register_valid[SP_REGNUM] && regno < I7_REGNUM))
+ || (!deprecated_register_valid[SP_REGNUM] && regno < I7_REGNUM))
{
- if (0 != ptrace (PTRACE_GETREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) &inferior_registers, 0))
- perror("ptrace_getregs");
-
- registers[REGISTER_BYTE (0)] = 0;
- memcpy (®isters[REGISTER_BYTE (1)], &inferior_registers.r_g1,
- 15 * REGISTER_RAW_SIZE (G0_REGNUM));
- *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
- *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
- *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)] = inferior_registers.r_npc;
- *(int *)®isters[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y;
+ if (0 != ptrace (PTRACE_GETREGS, fetch_pid,
+ (PTRACE_ARG3_TYPE) & inferior_registers, 0))
+ perror ("ptrace_getregs");
+
+ deprecated_registers[REGISTER_BYTE (0)] = 0;
+ memcpy (&deprecated_registers[REGISTER_BYTE (1)],
+ &inferior_registers.r_g1, 15 * REGISTER_RAW_SIZE (G0_REGNUM));
+ *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)]
+ = inferior_registers.r_ps;
+ *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)]
+ = inferior_registers.r_pc;
+ *(int *) &deprecated_registers[REGISTER_BYTE (NPC_REGNUM)]
+ = inferior_registers.r_npc;
+ *(int *) &deprecated_registers[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y;
for (i = G0_REGNUM; i <= O7_REGNUM; i++)
- register_valid[i] = 1;
- register_valid[Y_REGNUM] = 1;
- register_valid[PS_REGNUM] = 1;
- register_valid[PC_REGNUM] = 1;
- register_valid[NPC_REGNUM] = 1;
+ deprecated_register_valid[i] = 1;
+ deprecated_register_valid[Y_REGNUM] = 1;
+ deprecated_register_valid[PS_REGNUM] = 1;
+ deprecated_register_valid[PC_REGNUM] = 1;
+ deprecated_register_valid[NPC_REGNUM] = 1;
/* If we don't set these valid, read_register_bytes() rereads
- all the regs every time it is called! FIXME. */
- register_valid[WIM_REGNUM] = 1; /* Not true yet, FIXME */
- register_valid[TBR_REGNUM] = 1; /* Not true yet, FIXME */
- register_valid[CPS_REGNUM] = 1; /* Not true yet, FIXME */
+ all the regs every time it is called! FIXME. */
+ deprecated_register_valid[WIM_REGNUM] = 1; /* Not true yet, FIXME */
+ deprecated_register_valid[TBR_REGNUM] = 1; /* Not true yet, FIXME */
+ deprecated_register_valid[CPS_REGNUM] = 1; /* Not true yet, FIXME */
}
/* Floating point registers */
regno == FPS_REGNUM ||
(regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31))
{
- if (0 != ptrace (PTRACE_GETFPREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) &inferior_fp_registers,
+ if (0 != ptrace (PTRACE_GETFPREGS, fetch_pid,
+ (PTRACE_ARG3_TYPE) & inferior_fp_registers,
0))
- perror("ptrace_getfpregs");
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
- sizeof inferior_fp_registers.fpu_fr);
- memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)],
- &inferior_fp_registers.Fpu_fsr,
- sizeof (FPU_FSR_TYPE));
- for (i = FP0_REGNUM; i <= FP0_REGNUM+31; i++)
- register_valid[i] = 1;
- register_valid[FPS_REGNUM] = 1;
+ perror ("ptrace_getfpregs");
+ memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
+ &inferior_fp_registers, sizeof inferior_fp_registers.fpu_fr);
+ memcpy (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
+ &inferior_fp_registers.Fpu_fsr, sizeof (FPU_FSR_TYPE));
+ for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++)
+ deprecated_register_valid[i] = 1;
+ deprecated_register_valid[FPS_REGNUM] = 1;
}
/* These regs are saved on the stack by the kernel. Only read them
all (16 ptrace calls!) if we really need them. */
if (regno == -1)
{
- target_xfer_memory (*(CORE_ADDR*)®isters[REGISTER_BYTE (SP_REGNUM)],
- ®isters[REGISTER_BYTE (L0_REGNUM)],
- 16*REGISTER_RAW_SIZE (L0_REGNUM), 0);
+ CORE_ADDR sp = *(unsigned int *) & deprecated_registers[REGISTER_BYTE (SP_REGNUM)];
+ target_read_memory (sp, &deprecated_registers[REGISTER_BYTE (L0_REGNUM)],
+ 16 * REGISTER_RAW_SIZE (L0_REGNUM));
for (i = L0_REGNUM; i <= I7_REGNUM; i++)
- register_valid[i] = 1;
+ deprecated_register_valid[i] = 1;
}
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
{
- CORE_ADDR sp = *(CORE_ADDR*)®isters[REGISTER_BYTE (SP_REGNUM)];
+ CORE_ADDR sp = *(unsigned int *) & deprecated_registers[REGISTER_BYTE (SP_REGNUM)];
i = REGISTER_BYTE (regno);
- if (register_valid[regno])
- printf_unfiltered("register %d valid and read\n", regno);
- target_xfer_memory (sp + i - REGISTER_BYTE (L0_REGNUM),
- ®isters[i], REGISTER_RAW_SIZE (regno), 0);
- register_valid[regno] = 1;
+ if (deprecated_register_valid[regno])
+ printf_unfiltered ("register %d valid and read\n", regno);
+ target_read_memory (sp + i - REGISTER_BYTE (L0_REGNUM),
+ &deprecated_registers[i], REGISTER_RAW_SIZE (regno));
+ deprecated_register_valid[regno] = 1;
}
}
Otherwise, REGNO specifies which register (so we can save time). */
void
-store_inferior_registers (regno)
- int regno;
+store_inferior_registers (int regno)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
int wanna_store = INT_REGS + STACK_REGS + FP_REGS;
+ int store_pid;
+
+ /* NOTE: cagney/2002-12-02: See comment in fetch_inferior_registers
+ about threaded assumptions. */
+ store_pid = TIDGET (inferior_ptid);
+ if (store_pid == 0)
+ store_pid = PIDGET (inferior_ptid);
/* First decide which pieces of machine-state we need to modify.
Default for regno == -1 case is all pieces. */
if (regno >= 0)
- if (FP0_REGNUM <= regno && regno < FP0_REGNUM + 32)
- {
- wanna_store = FP_REGS;
- }
- else
- {
- if (regno == SP_REGNUM)
- wanna_store = INT_REGS + STACK_REGS;
- else if (regno < L0_REGNUM || regno > I7_REGNUM)
- wanna_store = INT_REGS;
- else if (regno == FPS_REGNUM)
+ {
+ if (FP0_REGNUM <= regno && regno < FP0_REGNUM + 32)
+ {
wanna_store = FP_REGS;
- else
- wanna_store = STACK_REGS;
- }
+ }
+ else
+ {
+ if (regno == SP_REGNUM)
+ wanna_store = INT_REGS + STACK_REGS;
+ else if (regno < L0_REGNUM || regno > I7_REGNUM)
+ wanna_store = INT_REGS;
+ else if (regno == FPS_REGNUM)
+ wanna_store = FP_REGS;
+ else
+ wanna_store = STACK_REGS;
+ }
+ }
/* See if we're forcing the stores to happen now, or deferring. */
if (regno == -2)
if (wanna_store & STACK_REGS)
{
- CORE_ADDR sp = *(CORE_ADDR *)®isters[REGISTER_BYTE (SP_REGNUM)];
+ CORE_ADDR sp = *(unsigned int *) & deprecated_registers[REGISTER_BYTE (SP_REGNUM)];
if (regno < 0 || regno == SP_REGNUM)
{
- if (!register_valid[L0_REGNUM+5]) abort();
- target_xfer_memory (sp,
- ®isters[REGISTER_BYTE (L0_REGNUM)],
- 16*REGISTER_RAW_SIZE (L0_REGNUM), 1);
+ if (!deprecated_register_valid[L0_REGNUM + 5])
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ target_write_memory (sp,
+ &deprecated_registers[REGISTER_BYTE (L0_REGNUM)],
+ 16 * REGISTER_RAW_SIZE (L0_REGNUM));
}
else
{
- if (!register_valid[regno]) abort();
- target_xfer_memory (sp + REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM),
- ®isters[REGISTER_BYTE (regno)],
- REGISTER_RAW_SIZE (regno), 1);
+ if (!deprecated_register_valid[regno])
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ target_write_memory (sp + REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM),
+ &deprecated_registers[REGISTER_BYTE (regno)],
+ REGISTER_RAW_SIZE (regno));
}
-
+
}
if (wanna_store & INT_REGS)
{
- if (!register_valid[G1_REGNUM]) abort();
+ if (!deprecated_register_valid[G1_REGNUM])
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
- memcpy (&inferior_registers.r_g1, ®isters[REGISTER_BYTE (G1_REGNUM)],
+ memcpy (&inferior_registers.r_g1,
+ &deprecated_registers[REGISTER_BYTE (G1_REGNUM)],
15 * REGISTER_RAW_SIZE (G1_REGNUM));
inferior_registers.r_ps =
- *(int *)®isters[REGISTER_BYTE (PS_REGNUM)];
+ *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)];
inferior_registers.r_pc =
- *(int *)®isters[REGISTER_BYTE (PC_REGNUM)];
+ *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)];
inferior_registers.r_npc =
- *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)];
+ *(int *) &deprecated_registers[REGISTER_BYTE (NPC_REGNUM)];
inferior_registers.r_y =
- *(int *)®isters[REGISTER_BYTE (Y_REGNUM)];
+ *(int *) &deprecated_registers[REGISTER_BYTE (Y_REGNUM)];
- if (0 != ptrace (PTRACE_SETREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) &inferior_registers, 0))
- perror("ptrace_setregs");
+ if (0 != ptrace (PTRACE_SETREGS, store_pid,
+ (PTRACE_ARG3_TYPE) & inferior_registers, 0))
+ perror ("ptrace_setregs");
}
if (wanna_store & FP_REGS)
{
- if (!register_valid[FP0_REGNUM+9]) abort();
- memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
+ if (!deprecated_register_valid[FP0_REGNUM + 9])
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ memcpy (&inferior_fp_registers,
+ &deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.fpu_fr);
- memcpy (&inferior_fp_registers.Fpu_fsr,
- ®isters[REGISTER_BYTE (FPS_REGNUM)], sizeof (FPU_FSR_TYPE));
+ memcpy (&inferior_fp_registers.Fpu_fsr,
+ &deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
+ sizeof (FPU_FSR_TYPE));
if (0 !=
- ptrace (PTRACE_SETFPREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) &inferior_fp_registers, 0))
- perror("ptrace_setfpregs");
+ ptrace (PTRACE_SETFPREGS, store_pid,
+ (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0))
+ perror ("ptrace_setfpregs");
}
}
+/* Provide registers to GDB from a core file.
-void
-fetch_core_registers (core_reg_sect, core_reg_size, which, ignore)
- char *core_reg_sect;
- unsigned core_reg_size;
- int which;
- unsigned int ignore; /* reg addr, unused in this version */
+ CORE_REG_SECT points to an array of bytes, which are the contents
+ of a `note' from a core file which BFD thinks might contain
+ register contents. CORE_REG_SIZE is its size.
+
+ WHICH says which register set corelow suspects this is:
+ 0 --- the general-purpose register set
+ 2 --- the floating-point register set
+
+ IGNORE is unused. */
+
+static void
+fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
+ int which, CORE_ADDR ignore)
{
- if (which == 0) {
+ if (which == 0)
+ {
- /* Integer registers */
+ /* Integer registers */
#define gregs ((struct regs *)core_reg_sect)
- /* G0 *always* holds 0. */
- *(int *)®isters[REGISTER_BYTE (0)] = 0;
-
- /* The globals and output registers. */
- memcpy (®isters[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
- 15 * REGISTER_RAW_SIZE (G1_REGNUM));
- *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
- *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
- *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
- *(int *)®isters[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
-
- /* My best guess at where to get the locals and input
- registers is exactly where they usually are, right above
- the stack pointer. If the core dump was caused by a bus error
- from blowing away the stack pointer (as is possible) then this
- won't work, but it's worth the try. */
- {
- int sp;
+ /* G0 *always* holds 0. */
+ *(int *) &deprecated_registers[REGISTER_BYTE (0)] = 0;
- sp = *(int *)®isters[REGISTER_BYTE (SP_REGNUM)];
- if (0 != target_read_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)],
- 16 * REGISTER_RAW_SIZE (L0_REGNUM)))
- {
- /* fprintf_unfiltered so user can still use gdb */
- fprintf_unfiltered (gdb_stderr,
- "Couldn't read input and local registers from core file\n");
- }
+ /* The globals and output registers. */
+ memcpy (&deprecated_registers[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
+ 15 * REGISTER_RAW_SIZE (G1_REGNUM));
+ *(int *) &deprecated_registers[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
+ *(int *) &deprecated_registers[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
+ *(int *) &deprecated_registers[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
+ *(int *) &deprecated_registers[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
+
+ /* My best guess at where to get the locals and input
+ registers is exactly where they usually are, right above
+ the stack pointer. If the core dump was caused by a bus error
+ from blowing away the stack pointer (as is possible) then this
+ won't work, but it's worth the try. */
+ {
+ int sp;
+
+ sp = *(int *) &deprecated_registers[REGISTER_BYTE (SP_REGNUM)];
+ if (0 != target_read_memory (sp,
+ &deprecated_registers[REGISTER_BYTE (L0_REGNUM)],
+ 16 * REGISTER_RAW_SIZE (L0_REGNUM)))
+ {
+ /* fprintf_unfiltered so user can still use gdb */
+ fprintf_unfiltered (gdb_stderr,
+ "Couldn't read input and local registers from core file\n");
+ }
+ }
}
- } else if (which == 2) {
+ else if (which == 2)
+ {
- /* Floating point registers */
+ /* Floating point registers */
#define fpuregs ((struct fpu *) core_reg_sect)
- if (core_reg_size >= sizeof (struct fpu))
- {
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], fpuregs->fpu_regs,
- sizeof (fpuregs->fpu_regs));
- memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr,
- sizeof (FPU_FSR_TYPE));
- }
- else
- fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
- }
+ if (core_reg_size >= sizeof (struct fpu))
+ {
+ memcpy (&deprecated_registers[REGISTER_BYTE (FP0_REGNUM)],
+ fpuregs->fpu_regs, sizeof (fpuregs->fpu_regs));
+ memcpy (&deprecated_registers[REGISTER_BYTE (FPS_REGNUM)],
+ &fpuregs->fpu_fsr, sizeof (FPU_FSR_TYPE));
+ }
+ else
+ fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
+ }
}
int
-kernel_u_size ()
+kernel_u_size (void)
{
return (sizeof (struct user));
}
+\f
+
+/* Register that we are able to handle sparc core file formats.
+ FIXME: is this really bfd_target_unknown_flavour? */
+
+static struct core_fns sparc_core_fns =
+{
+ bfd_target_unknown_flavour, /* core_flavour */
+ default_check_format, /* check_format */
+ default_core_sniffer, /* core_sniffer */
+ fetch_core_registers, /* core_read_registers */
+ NULL /* next */
+};
+
+void
+_initialize_core_sparc (void)
+{
+ add_core_fns (&sparc_core_fns);
+}
projects / deliverable / binutils-gdb.git / blobdiff