/* Native-dependent code for modern i386 BSD's.
- Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GDB.
void
supply_fpregset (fpregset_t *fpregsetp)
{
- i387_supply_fsave ((char *) fpregsetp);
+ i387_supply_fsave (current_regcache, -1, fpregsetp);
}
/* Fill register REGNO (if it is a floating-point register) in
void
fetch_inferior_registers (int regno)
{
-
if (regno == -1 || GETREGS_SUPPLIES (regno))
{
gregset_t gregs;
#ifdef HAVE_PT_GETXMMREGS
char xmmregs[512];
- if (have_ptrace_xmmregs != 0 &&
- ptrace(PT_GETXMMREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) xmmregs, 0) == 0)
+ if (have_ptrace_xmmregs != 0
+ && ptrace(PT_GETXMMREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) xmmregs, 0) == 0)
{
have_ptrace_xmmregs = 1;
- i387_supply_fxsave (xmmregs);
+ i387_supply_fxsave (current_regcache, -1, xmmregs);
}
else
{
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
- supply_fpregset (&fpregs);
+ i387_supply_fsave (current_regcache, -1, &fpregs);
}
#else
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
- supply_fpregset (&fpregs);
+ i387_supply_fsave (current_regcache, -1, &fpregs);
#endif
}
}
void
store_inferior_registers (int regno)
{
-
if (regno == -1 || GETREGS_SUPPLIES (regno))
{
gregset_t gregs;
#ifdef HAVE_PT_GETXMMREGS
char xmmregs[512];
- if (have_ptrace_xmmregs != 0 &&
- ptrace(PT_GETXMMREGS, PIDGET (inferior_ptid),
- (PTRACE_ARG3_TYPE) xmmregs, 0) == 0)
+ if (have_ptrace_xmmregs != 0
+ && ptrace(PT_GETXMMREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) xmmregs, 0) == 0)
{
have_ptrace_xmmregs = 1;
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
- fill_fpregset (&fpregs, regno);
+ i387_fill_fsave ((char *) &fpregs, regno);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
/* For some mysterious reason, some of the reserved bits in the
debug control register get set. Mask these off, otherwise the
ptrace call below will fail. */
- dbregs.dr7 &= ~(0x0000fc00);
+ DBREG_DRX ((&dbregs), 7) &= ~(0x0000fc00);
DBREG_DRX ((&dbregs), regnum) = value;
return 0;
#endif
- return dbregs.dr6;
+ return DBREG_DRX ((&dbregs), 6);
}
#endif /* PT_GETDBREGS */
void
_initialize_i386bsd_nat (void)
{
- int sc_pc_offset;
+ int offset;
/* To support the recognition of signal handlers, i386bsd-tdep.c
hardcodes some constants. Inclusion of this file means that we
information. */
#if defined (__FreeBSD_version) && __FreeBSD_version >= 400011
- extern int i386fbsd4_sc_pc_offset;
-#define SC_PC_OFFSET i386fbsd4_sc_pc_offset
+#define SC_REG_OFFSET i386fbsd4_sc_reg_offset
+#elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
+#define SC_REG_OFFSET i386fbsd_sc_reg_offset
#elif defined (NetBSD) || defined (__NetBSD_Version__)
- extern int i386nbsd_sc_pc_offset;
-#define SC_PC_OFFSET i386nbsd_sc_pc_offset
+#define SC_REG_OFFSET i386nbsd_sc_reg_offset
+#elif defined (OpenBSD)
+#define SC_REG_OFFSET i386obsd_sc_reg_offset
#else
- extern int i386bsd_sc_pc_offset;
-#define SC_PC_OFFSET i386bsd_sc_pc_offset
+#define SC_REG_OFFSET i386bsd_sc_reg_offset
#endif
+ /* We only check the program counter, stack pointer and frame
+ pointer since these members of `struct sigcontext' are essential
+ for providing backtraces. More checks could be added, but would
+ involve adding configure checks for the appropriate structure
+ members, since older BSD's don't provide all of them. */
+
+#define SC_PC_OFFSET SC_REG_OFFSET[I386_EIP_REGNUM]
+#define SC_SP_OFFSET SC_REG_OFFSET[I386_ESP_REGNUM]
+#define SC_FP_OFFSET SC_REG_OFFSET[I386_EBP_REGNUM]
+
/* Override the default value for the offset of the program counter
in the sigcontext structure. */
- sc_pc_offset = offsetof (struct sigcontext, sc_pc);
+ offset = offsetof (struct sigcontext, sc_pc);
- if (SC_PC_OFFSET != sc_pc_offset)
+ if (SC_PC_OFFSET != offset)
{
warning ("\
offsetof (struct sigcontext, sc_pc) yields %d instead of %d.\n\
+Please report this to <bug-gdb@gnu.org>.",
+ offset, SC_PC_OFFSET);
+ }
+
+ SC_PC_OFFSET = offset;
+
+ /* Likewise for the stack pointer. */
+ offset = offsetof (struct sigcontext, sc_sp);
+
+ if (SC_SP_OFFSET != offset)
+ {
+ warning ("\
+offsetof (struct sigcontext, sc_sp) yields %d instead of %d.\n\
+Please report this to <bug-gdb@gnu.org>.",
+ offset, SC_SP_OFFSET);
+ }
+
+ SC_SP_OFFSET = offset;
+
+ /* And the frame pointer. */
+ offset = offsetof (struct sigcontext, sc_fp);
+
+ if (SC_FP_OFFSET != offset)
+ {
+ warning ("\
+offsetof (struct sigcontext, sc_fp) yields %d instead of %d.\n\
Please report this to <bug-gdb@gnu.org>.",
- sc_pc_offset, SC_PC_OFFSET);
+ offset, SC_FP_OFFSET);
}
- SC_PC_OFFSET = sc_pc_offset;
+ SC_FP_OFFSET = offset;
}