#endif
#include "gregset.h"
+#include "i386-tdep.h"
\f
/* In older BSD versions we cannot get at some of the segment
{
int i;
- for (i = 0; i < NUM_GREGS; i++)
+ for (i = 0; i < I386_NUM_GREGS; i++)
{
if (CANNOT_FETCH_REGISTER (i))
supply_register (i, NULL);
{
int i;
- for (i = 0; i < NUM_GREGS; i++)
+ for (i = 0; i < I386_NUM_GREGS; i++)
if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i))
regcache_collect (i, REG_ADDR (gregsetp, i));
}
/* 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 */
return (sizeof (struct user));
}
\f
-/* See i386bsd-tdep.c. */
-extern int i386bsd_sigcontext_pc_offset;
-
void
_initialize_i386bsd_nat (void)
{
+ int offset;
+
/* 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. */
+#if defined (__FreeBSD_version) && __FreeBSD_version >= 400011
+ extern int i386fbsd4_sc_reg_offset[];
+#define SC_REG_OFFSET i386fbsd4_sc_reg_offset
+#elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
+ extern int i386fbsd_sc_reg_offset[];
+#define SC_REG_OFFSET i386fbsd_sc_reg_offset
+#elif defined (NetBSD) || defined (__NetBSD_Version__)
+ extern int i386nbsd_sc_reg_offset[];
+#define SC_REG_OFFSET i386nbsd_sc_reg_offset
+#elif defined (OpenBSD)
+ extern int i386obsd_sc_reg_offset[];
+#define SC_REG_OFFSET i386obsd_sc_reg_offset
+#else
+ extern int i386bsd_sc_reg_offset[];
+#define SC_PC_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. */
- i386bsd_sigcontext_pc_offset = offsetof (struct sigcontext, sc_pc);
+ offset = offsetof (struct sigcontext, sc_pc);
+
+ 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>.",
+ offset, SC_FP_OFFSET);
+ }
+
+ SC_FP_OFFSET = offset;
}