/* Native-dependent code for FreeBSD/amd64.
- Copyright 2003 Free Software Foundation, Inc.
+
+ Copyright (C) 2003, 2004, 2007, 2008, 2009 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 "inferior.h"
#include "regcache.h"
+#include "target.h"
#include "gdb_assert.h"
#include <signal.h>
#include <sys/sysctl.h>
#include <machine/reg.h>
-#ifdef HAVE_SYS_PROCFS_H
-#include <sys/procfs.h>
-#endif
-
-#ifndef HAVE_GREGSET_T
-typedef struct reg gregset_t;
-#endif
-
-#ifndef HAVE_FPREGSET_T
-typedef struct fpreg fpregset_t;
-#endif
-
-#include "gregset.h"
-#include "x86-64-tdep.h"
+#include "fbsd-nat.h"
+#include "amd64-tdep.h"
+#include "amd64-nat.h"
\f
-/* Offset to the gregset_t location where REG is stored. */
-#define REG_OFFSET(reg) offsetof (gregset_t, reg)
+/* Offset in `struct reg' where MEMBER is stored. */
+#define REG_OFFSET(member) offsetof (struct reg, member)
-/* At reg_offset[REGNO] you'll find the offset to the gregset_t
- location where the GDB register REGNO is stored. Unsupported
- registers are marked with `-1'. */
-static int reg_offset[] =
+/* At amd64fbsd64_r_reg_offset[REGNUM] you'll find the offset in
+ `struct reg' location where the GDB register REGNUM is stored.
+ Unsupported registers are marked with `-1'. */
+static int amd64fbsd64_r_reg_offset[] =
{
REG_OFFSET (r_rax),
REG_OFFSET (r_rbx),
REG_OFFSET (r_r15),
REG_OFFSET (r_rip),
REG_OFFSET (r_rflags),
+ REG_OFFSET (r_cs),
+ REG_OFFSET (r_ss),
-1,
-1,
-1,
-1
};
-
-#define REG_ADDR(regset, regno) ((char *) (regset) + reg_offset[regno])
-
-/* Macro to determine if a register is fetched with PT_GETREGS. */
-#define GETREGS_SUPPLIES(regno) \
- ((0 <= (regno) && (regno) < X86_64_NUM_GREGS))
\f
-/* Transfering the registers between GDB, inferiors and core files. */
-
-/* Fill GDB's register array with the general-purpose register values
- in *GREGSETP. */
-
-void
-supply_gregset (gregset_t *gregsetp)
-{
- int i;
-
- for (i = 0; i < X86_64_NUM_GREGS; i++)
- {
- if (reg_offset[i] == -1)
- supply_register (i, NULL);
- else
- supply_register (i, REG_ADDR (gregsetp, i));
- }
-}
-
-/* Fill register REGNO (if it is a general-purpose register) in
- *GREGSETPS with the value in GDB's register array. If REGNO is -1,
- do this for all registers. */
-
-void
-fill_gregset (gregset_t *gregsetp, int regno)
-{
- int i;
-
- for (i = 0; i < X86_64_NUM_GREGS; i++)
- if ((regno == -1 || regno == i) && reg_offset[i] != -1)
- regcache_collect (i, REG_ADDR (gregsetp, i));
-}
-
-/* Fill GDB's register array with the floating-point register values
- in *FPREGSETP. */
-
-void
-supply_fpregset (fpregset_t *fpregsetp)
-{
- x86_64_supply_fxsave ((char *) fpregsetp);
-}
-
-/* Fill register REGNO (if it is a floating-point register) in
- *FPREGSETP with the value in GDB's register array. If REGNO is -1,
- do this for all registers. */
-
-void
-fill_fpregset (fpregset_t *fpregsetp, int regno)
-{
- x86_64_fill_fxsave ((char *) fpregsetp, regno);
-}
+/* Mapping between the general-purpose registers in FreeBSD/amd64
+ `struct reg' format and GDB's register cache layout for
+ FreeBSD/i386.
-/* Fetch register REGNO from the inferior. If REGNO is -1, do this
- for all registers (including the floating point registers). */
+ Note that most FreeBSD/amd64 registers are 64-bit, while the
+ FreeBSD/i386 registers are all 32-bit, but since we're
+ little-endian we get away with that. */
-void
-fetch_inferior_registers (int regno)
+/* From <machine/reg.h>. */
+static int amd64fbsd32_r_reg_offset[I386_NUM_GREGS] =
{
- if (regno == -1 || GETREGS_SUPPLIES (regno))
- {
- gregset_t gregs;
-
- if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
- perror_with_name ("Couldn't get registers");
-
- supply_gregset (&gregs);
- if (regno != -1)
- return;
- }
-
- if (regno == -1 || regno >= FP0_REGNUM)
- {
- fpregset_t fpregs;
+ 14 * 8, 13 * 8, /* %eax, %ecx */
+ 12 * 8, 11 * 8, /* %edx, %ebx */
+ 20 * 8, 10 * 8, /* %esp, %ebp */
+ 9 * 8, 8 * 8, /* %esi, %edi */
+ 17 * 8, 19 * 8, /* %eip, %eflags */
+ 18 * 8, 21 * 8, /* %cs, %ss */
+ -1, -1, -1, -1 /* %ds, %es, %fs, %gs */
+};
+\f
- if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get floating point status");
+/* Support for debugging kernel virtual memory images. */
- supply_fpregset (&fpregs);
- }
-}
+#include <sys/types.h>
+#include <machine/pcb.h>
-/* Store register REGNO back into the inferior. If REGNO is -1, do
- this for all registers (including the floating point registers). */
+#include "bsd-kvm.h"
-void
-store_inferior_registers (int regno)
+static int
+amd64fbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
- if (regno == -1 || GETREGS_SUPPLIES (regno))
- {
- gregset_t gregs;
-
- if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
- perror_with_name ("Couldn't get registers");
-
- fill_gregset (&gregs, regno);
-
- if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
- perror_with_name ("Couldn't write registers");
-
- if (regno != -1)
- return;
- }
-
- if (regno == -1 || regno >= FP0_REGNUM)
- {
- fpregset_t fpregs;
-
- if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't get floating point status");
-
- fill_fpregset (&fpregs, regno);
-
- if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
- perror_with_name ("Couldn't write floating point status");
- }
+ /* The following is true for FreeBSD 5.2:
+
+ The pcb contains %rip, %rbx, %rsp, %rbp, %r12, %r13, %r14, %r15,
+ %ds, %es, %fs and %gs. This accounts for all callee-saved
+ registers specified by the psABI and then some. Here %esp
+ contains the stack pointer at the point just after the call to
+ cpu_switch(). From this information we reconstruct the register
+ state as it would like when we just returned from cpu_switch(). */
+
+ /* The stack pointer shouldn't be zero. */
+ if (pcb->pcb_rsp == 0)
+ return 0;
+
+ pcb->pcb_rsp += 8;
+ regcache_raw_supply (regcache, AMD64_RIP_REGNUM, &pcb->pcb_rip);
+ regcache_raw_supply (regcache, AMD64_RBX_REGNUM, &pcb->pcb_rbx);
+ regcache_raw_supply (regcache, AMD64_RSP_REGNUM, &pcb->pcb_rsp);
+ regcache_raw_supply (regcache, AMD64_RBP_REGNUM, &pcb->pcb_rbp);
+ regcache_raw_supply (regcache, 12, &pcb->pcb_r12);
+ regcache_raw_supply (regcache, 13, &pcb->pcb_r13);
+ regcache_raw_supply (regcache, 14, &pcb->pcb_r14);
+ regcache_raw_supply (regcache, 15, &pcb->pcb_r15);
+ regcache_raw_supply (regcache, AMD64_DS_REGNUM, &pcb->pcb_ds);
+ regcache_raw_supply (regcache, AMD64_ES_REGNUM, &pcb->pcb_es);
+ regcache_raw_supply (regcache, AMD64_FS_REGNUM, &pcb->pcb_fs);
+ regcache_raw_supply (regcache, AMD64_GS_REGNUM, &pcb->pcb_gs);
+
+ return 1;
}
\f
void _initialize_amd64fbsd_nat (void);
void
-_initialize_am64fbsd_nat (void)
+_initialize_amd64fbsd_nat (void)
{
+ struct target_ops *t;
int offset;
+ amd64_native_gregset32_reg_offset = amd64fbsd32_r_reg_offset;
+ amd64_native_gregset64_reg_offset = amd64fbsd64_r_reg_offset;
+
+ /* Add some extra features to the common *BSD/i386 target. */
+ t = amd64bsd_target ();
+ t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
+ t->to_find_memory_regions = fbsd_find_memory_regions;
+ t->to_make_corefile_notes = fbsd_make_corefile_notes;
+ add_target (t);
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (amd64fbsd_supply_pcb);
+
/* To support the recognition of signal handlers, i386bsd-tdep.c
hardcodes some constants. Inclusion of this file means that we
are compiling a native debugger, which means that we can use the
system header files and sysctl(3) to get at the relevant
information. */
- extern int amd64fbsd_sc_reg_offset[];
#define SC_REG_OFFSET amd64fbsd_sc_reg_offset
/* We only check the program counter, stack pointer and frame
pointer since these members of `struct sigcontext' are essential
for providing backtraces. */
-#define SC_RIP_OFFSET SC_REG_OFFSET[X86_64_RIP_REGNUM]
-#define SC_RSP_OFFSET SC_REG_OFFSET[X86_64_RSP_REGNUM]
-#define SC_RBP_OFFSET SC_REG_OFFSET[X86_64_RBP_REGNUM]
+#define SC_RIP_OFFSET SC_REG_OFFSET[AMD64_RIP_REGNUM]
+#define SC_RSP_OFFSET SC_REG_OFFSET[AMD64_RSP_REGNUM]
+#define SC_RBP_OFFSET SC_REG_OFFSET[AMD64_RBP_REGNUM]
/* Override the default value for the offset of the program counter
in the sigcontext structure. */
if (SC_RIP_OFFSET != offset)
{
- warning ("\
+ warning (_("\
offsetof (struct sigcontext, sc_rip) yields %d instead of %d.\n\
-Please report this to <bug-gdb@gnu.org>.",
+Please report this to <bug-gdb@gnu.org>."),
offset, SC_RIP_OFFSET);
}
if (SC_RSP_OFFSET != offset)
{
- warning ("\
+ warning (_("\
offsetof (struct sigcontext, sc_rsp) yields %d instead of %d.\n\
-Please report this to <bug-gdb@gnu.org>.",
+Please report this to <bug-gdb@gnu.org>."),
offset, SC_RSP_OFFSET);
}
if (SC_RBP_OFFSET != offset)
{
- warning ("\
+ warning (_("\
offsetof (struct sigcontext, sc_rbp) yields %d instead of %d.\n\
-Please report this to <bug-gdb@gnu.org>.",
+Please report this to <bug-gdb@gnu.org>."),
offset, SC_RBP_OFFSET);
}
environment can be found. */
{
int mib[2];
- int ps_strings;
+ long ps_strings;
size_t len;
- extern CORE_ADDR amd64fbsd_sigtramp_start;
- extern CORE_ADDR amd64fbsd_sigtramp_end;
-
mib[0] = CTL_KERN;
mib[1] = KERN_PS_STRINGS;
len = sizeof (ps_strings);
if (sysctl (mib, 2, &ps_strings, &len, NULL, 0) == 0)
{
- amd64fbsd_sigtramp_start = ps_strings - 32;
- amd64fbsd_sigtramp_end = ps_strings;
+ amd64fbsd_sigtramp_start_addr = ps_strings - 32;
+ amd64fbsd_sigtramp_end_addr = ps_strings;
}
}
}
projects / deliverable / binutils-gdb.git / blobdiff