-/* Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
#include "win32-low.h"
#include "i386-low.h"
+#ifndef CONTEXT_EXTENDED_REGISTERS
+#define CONTEXT_EXTENDED_REGISTERS 0
+#endif
+
#define FCS_REGNUM 27
#define FOP_REGNUM 31
#define FLAG_TRACE_BIT 0x100
+#ifdef __x86_64__
+/* Defined in auto-generated file reg-amd64.c. */
+void init_registers_amd64 (void);
+#else
/* Defined in auto-generated file reg-i386.c. */
void init_registers_i386 (void);
+#endif
static struct i386_debug_reg_state debug_reg_state;
+static unsigned dr_status_mirror;
+static unsigned dr_control_mirror;
static int debug_registers_changed = 0;
static int debug_registers_used = 0;
debug_registers_used = 1;
}
+CORE_ADDR
+i386_dr_low_get_addr (int regnum)
+{
+ gdb_assert (DR_FIRSTADDR <= regnum && regnum < DR_LASTADDR);
+
+ return debug_reg_state.dr_mirror[regnum];
+}
+
/* Update the inferior's DR7 debug control register from STATE. */
void
debug_registers_used = 1;
}
+unsigned
+i386_dr_low_get_control (void)
+{
+ return dr_control_mirror;
+}
+
/* Get the value of the DR6 debug status register from the inferior
and record it in STATE. */
-void
-i386_dr_low_get_status (struct i386_debug_reg_state *state)
+unsigned
+i386_dr_low_get_status (void)
{
/* We don't need to do anything here, the last call to thread_rec for
current_event.dwThreadId id has already set it. */
+ return dr_status_mirror;
}
/* Watchpoint support. */
i386_low_init_dregs (&debug_reg_state);
debug_registers_changed = 0;
debug_registers_used = 0;
+ dr_status_mirror = 0;
+ dr_control_mirror = 0;
}
static void
i386_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
{
- th->context.ContextFlags = \
- CONTEXT_FULL | \
- CONTEXT_FLOATING_POINT | \
- CONTEXT_EXTENDED_REGISTERS | \
- CONTEXT_DEBUG_REGISTERS;
+ /* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
+ the system doesn't support extended registers. */
+ static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
- GetThreadContext (th->h, &th->context);
+ again:
+ th->context.ContextFlags = (CONTEXT_FULL
+ | CONTEXT_FLOATING_POINT
+ | CONTEXT_DEBUG_REGISTERS
+ | extended_registers);
+
+ if (!GetThreadContext (th->h, &th->context))
+ {
+ DWORD e = GetLastError ();
+
+ if (extended_registers && e == ERROR_INVALID_PARAMETER)
+ {
+ extended_registers = 0;
+ goto again;
+ }
+
+ error ("GetThreadContext failure %ld\n", (long) e);
+ }
debug_registers_changed = 0;
dr->dr_mirror[1] = th->context.Dr1;
dr->dr_mirror[2] = th->context.Dr2;
dr->dr_mirror[3] = th->context.Dr3;
- dr->dr_status_mirror = th->context.Dr6;
- dr->dr_control_mirror = th->context.Dr7;
+ dr_status_mirror = th->context.Dr6;
+ dr_control_mirror = th->context.Dr7;
}
}
th->context.Dr1 = dr->dr_mirror[1];
th->context.Dr2 = dr->dr_mirror[2];
th->context.Dr3 = dr->dr_mirror[3];
- /* th->context.Dr6 = dr->dr_status_mirror;
+ /* th->context.Dr6 = dr_status_mirror;
FIXME: should we set dr6 also ?? */
- th->context.Dr7 = dr->dr_control_mirror;
+ th->context.Dr7 = dr_control_mirror;
}
SetThreadContext (th->h, &th->context);
th->context.Dr1 = dr->dr_mirror[1];
th->context.Dr2 = dr->dr_mirror[2];
th->context.Dr3 = dr->dr_mirror[3];
- /* th->context.Dr6 = dr->dr_status_mirror;
+ /* th->context.Dr6 = dr_status_mirror;
FIXME: should we set dr6 also ?? */
- th->context.Dr7 = dr->dr_control_mirror;
+ th->context.Dr7 = dr_control_mirror;
SetThreadContext (th->h, &th->context);
th->context.ContextFlags = 0;
th->context.EFlags |= FLAG_TRACE_BIT;
}
+#ifndef __x86_64__
+
/* An array of offset mappings into a Win32 Context structure.
This is a one-to-one mapping which is indexed by gdb's register
numbers. It retrieves an offset into the context structure where
};
#undef context_offset
+#else /* __x86_64__ */
+
+#define context_offset(x) (offsetof (CONTEXT, x))
+static const int mappings[] =
+{
+ context_offset (Rax),
+ context_offset (Rbx),
+ context_offset (Rcx),
+ context_offset (Rdx),
+ context_offset (Rsi),
+ context_offset (Rdi),
+ context_offset (Rbp),
+ context_offset (Rsp),
+ context_offset (R8),
+ context_offset (R9),
+ context_offset (R10),
+ context_offset (R11),
+ context_offset (R12),
+ context_offset (R13),
+ context_offset (R14),
+ context_offset (R15),
+ context_offset (Rip),
+ context_offset (EFlags),
+ context_offset (SegCs),
+ context_offset (SegSs),
+ context_offset (SegDs),
+ context_offset (SegEs),
+ context_offset (SegFs),
+ context_offset (SegGs),
+ context_offset (FloatSave.FloatRegisters[0]),
+ context_offset (FloatSave.FloatRegisters[1]),
+ context_offset (FloatSave.FloatRegisters[2]),
+ context_offset (FloatSave.FloatRegisters[3]),
+ context_offset (FloatSave.FloatRegisters[4]),
+ context_offset (FloatSave.FloatRegisters[5]),
+ context_offset (FloatSave.FloatRegisters[6]),
+ context_offset (FloatSave.FloatRegisters[7]),
+ context_offset (FloatSave.ControlWord),
+ context_offset (FloatSave.StatusWord),
+ context_offset (FloatSave.TagWord),
+ context_offset (FloatSave.ErrorSelector),
+ context_offset (FloatSave.ErrorOffset),
+ context_offset (FloatSave.DataSelector),
+ context_offset (FloatSave.DataOffset),
+ context_offset (FloatSave.ErrorSelector)
+ /* XMM0-7 */ ,
+ context_offset (Xmm0),
+ context_offset (Xmm1),
+ context_offset (Xmm2),
+ context_offset (Xmm3),
+ context_offset (Xmm4),
+ context_offset (Xmm5),
+ context_offset (Xmm6),
+ context_offset (Xmm7),
+ context_offset (Xmm8),
+ context_offset (Xmm9),
+ context_offset (Xmm10),
+ context_offset (Xmm11),
+ context_offset (Xmm12),
+ context_offset (Xmm13),
+ context_offset (Xmm14),
+ context_offset (Xmm15),
+ /* MXCSR */
+ context_offset (FloatSave.MxCsr)
+};
+#undef context_offset
+
+#endif /* __x86_64__ */
+
/* Fetch register from gdbserver regcache data. */
static void
-i386_fetch_inferior_register (win32_thread_info *th, int r)
+i386_fetch_inferior_register (struct regcache *regcache,
+ win32_thread_info *th, int r)
{
char *context_offset = (char *) &th->context + mappings[r];
if (r == FCS_REGNUM)
{
l = *((long *) context_offset) & 0xffff;
- supply_register (r, (char *) &l);
+ supply_register (regcache, r, (char *) &l);
}
else if (r == FOP_REGNUM)
{
l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
- supply_register (r, (char *) &l);
+ supply_register (regcache, r, (char *) &l);
}
else
- supply_register (r, context_offset);
+ supply_register (regcache, r, context_offset);
}
/* Store a new register value into the thread context of TH. */
static void
-i386_store_inferior_register (win32_thread_info *th, int r)
+i386_store_inferior_register (struct regcache *regcache,
+ win32_thread_info *th, int r)
{
char *context_offset = (char *) &th->context + mappings[r];
- collect_register (r, context_offset);
+ collect_register (regcache, r, context_offset);
+}
+
+static const unsigned char i386_win32_breakpoint = 0xcc;
+#define i386_win32_breakpoint_len 1
+
+static void
+init_windows_x86 (void)
+{
+#ifdef __x86_64__
+ init_registers_amd64 ();
+#else
+ init_registers_i386 ();
+#endif
}
struct win32_target_ops the_low_target = {
- init_registers_i386,
+ init_windows_x86,
sizeof (mappings) / sizeof (mappings[0]),
i386_initial_stuff,
i386_get_thread_context,
i386_fetch_inferior_register,
i386_store_inferior_register,
i386_single_step,
- NULL, /* breakpoint */
- 0, /* breakpoint_len */
+ &i386_win32_breakpoint,
+ i386_win32_breakpoint_len,
i386_insert_point,
i386_remove_point,
i386_stopped_by_watchpoint,
projects / deliverable / binutils-gdb.git / blobdiff