-/* Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+/* Copyright (C) 2007-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "server.h"
#include "win32-low.h"
-#include "i386-low.h"
+#include "x86-low.h"
+#include "gdbsupport/x86-xstate.h"
+#ifdef __x86_64__
+#include "arch/amd64.h"
+#endif
+#include "arch/i386.h"
+#include "tdesc.h"
+#include "x86-tdesc.h"
#ifndef CONTEXT_EXTENDED_REGISTERS
#define CONTEXT_EXTENDED_REGISTERS 0
#define FLAG_TRACE_BIT 0x100
-#ifdef __x86_64
-/* Defined in auto-generated file reg-i386.c. */
-void init_registers_amd64 (void);
-#else
-/* Defined in auto-generated file reg-i386.c. */
-void init_registers_i386 (void);
-#endif
+static struct x86_debug_reg_state debug_reg_state;
-static struct i386_debug_reg_state debug_reg_state;
+static void
+update_debug_registers (thread_info *thread)
+{
+ win32_thread_info *th = (win32_thread_info *) thread_target_data (thread);
-static int debug_registers_changed = 0;
-static int debug_registers_used = 0;
+ /* The actual update is done later just before resuming the lwp,
+ we just mark that the registers need updating. */
+ th->debug_registers_changed = 1;
+}
/* Update the inferior's debug register REGNUM from STATE. */
-void
-i386_dr_low_set_addr (const struct i386_debug_reg_state *state, int regnum)
+static void
+x86_dr_low_set_addr (int regnum, CORE_ADDR addr)
{
- if (! (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR))
- fatal ("Invalid debug register %d", regnum);
-
- /* debug_reg_state.dr_mirror is already set.
- Just notify i386_set_thread_context, i386_thread_added
- that the registers need to be updated. */
- debug_registers_changed = 1;
- debug_registers_used = 1;
+ gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
+
+ /* Only update the threads of this process. */
+ for_each_thread (current_thread->id.pid (), update_debug_registers);
}
/* Update the inferior's DR7 debug control register from STATE. */
-void
-i386_dr_low_set_control (const struct i386_debug_reg_state *state)
+static void
+x86_dr_low_set_control (unsigned long control)
+{
+ /* Only update the threads of this process. */
+ for_each_thread (current_thread->id.pid (), update_debug_registers);
+}
+
+/* Return the current value of a DR register of the current thread's
+ context. */
+
+static DWORD64
+win32_get_current_dr (int dr)
+{
+ win32_thread_info *th
+ = (win32_thread_info *) thread_target_data (current_thread);
+
+ win32_require_context (th);
+
+#define RET_DR(DR) \
+ case DR: \
+ return th->context.Dr ## DR
+
+ switch (dr)
+ {
+ RET_DR (0);
+ RET_DR (1);
+ RET_DR (2);
+ RET_DR (3);
+ RET_DR (6);
+ RET_DR (7);
+ }
+
+#undef RET_DR
+
+ gdb_assert_not_reached ("unhandled dr");
+}
+
+static CORE_ADDR
+x86_dr_low_get_addr (int regnum)
{
- /* debug_reg_state.dr_control_mirror is already set.
- Just notify i386_set_thread_context, i386_thread_added
- that the registers need to be updated. */
- debug_registers_changed = 1;
- debug_registers_used = 1;
+ gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
+
+ return win32_get_current_dr (regnum - DR_FIRSTADDR);
+}
+
+static unsigned long
+x86_dr_low_get_control (void)
+{
+ return win32_get_current_dr (7);
}
/* 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)
+static unsigned long
+x86_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 win32_get_current_dr (6);
}
-/* Watchpoint support. */
+/* Low-level function vector. */
+struct x86_dr_low_type x86_dr_low =
+ {
+ x86_dr_low_set_control,
+ x86_dr_low_set_addr,
+ x86_dr_low_get_addr,
+ x86_dr_low_get_status,
+ x86_dr_low_get_control,
+ sizeof (void *),
+ };
+
+/* Breakpoint/watchpoint support. */
static int
-i386_insert_point (char type, CORE_ADDR addr, int len)
+i386_supports_z_point_type (char z_type)
+{
+ switch (z_type)
+ {
+ case Z_PACKET_WRITE_WP:
+ case Z_PACKET_ACCESS_WP:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int
+i386_insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, struct raw_breakpoint *bp)
{
switch (type)
{
- case '2':
- case '3':
- case '4':
- return i386_low_insert_watchpoint (&debug_reg_state,
- type, addr, len);
+ case raw_bkpt_type_write_wp:
+ case raw_bkpt_type_access_wp:
+ {
+ enum target_hw_bp_type hw_type
+ = raw_bkpt_type_to_target_hw_bp_type (type);
+
+ return x86_dr_insert_watchpoint (&debug_reg_state,
+ hw_type, addr, size);
+ }
default:
/* Unsupported. */
return 1;
}
static int
-i386_remove_point (char type, CORE_ADDR addr, int len)
+i386_remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
+ int size, struct raw_breakpoint *bp)
{
switch (type)
{
- case '2':
- case '3':
- case '4':
- return i386_low_remove_watchpoint (&debug_reg_state,
- type, addr, len);
+ case raw_bkpt_type_write_wp:
+ case raw_bkpt_type_access_wp:
+ {
+ enum target_hw_bp_type hw_type
+ = raw_bkpt_type_to_target_hw_bp_type (type);
+
+ return x86_dr_remove_watchpoint (&debug_reg_state,
+ hw_type, addr, size);
+ }
default:
/* Unsupported. */
return 1;
}
static int
-i386_stopped_by_watchpoint (void)
+x86_stopped_by_watchpoint (void)
{
- return i386_low_stopped_by_watchpoint (&debug_reg_state);
+ return x86_dr_stopped_by_watchpoint (&debug_reg_state);
}
static CORE_ADDR
-i386_stopped_data_address (void)
+x86_stopped_data_address (void)
{
CORE_ADDR addr;
- if (i386_low_stopped_data_address (&debug_reg_state, &addr))
+ if (x86_dr_stopped_data_address (&debug_reg_state, &addr))
return addr;
return 0;
}
static void
i386_initial_stuff (void)
{
- i386_low_init_dregs (&debug_reg_state);
- debug_registers_changed = 0;
- debug_registers_used = 0;
+ x86_low_init_dregs (&debug_reg_state);
}
static void
-i386_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
+i386_get_thread_context (win32_thread_info *th)
{
/* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
the system doesn't support extended registers. */
error ("GetThreadContext failure %ld\n", (long) e);
}
-
- debug_registers_changed = 0;
-
- if (th->tid == current_event->dwThreadId)
- {
- /* Copy dr values from the current thread. */
- struct i386_debug_reg_state *dr = &debug_reg_state;
- dr->dr_mirror[0] = th->context.Dr0;
- 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;
- }
}
static void
-i386_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
+i386_prepare_to_resume (win32_thread_info *th)
{
- if (debug_registers_changed)
+ if (th->debug_registers_changed)
{
- struct i386_debug_reg_state *dr = &debug_reg_state;
+ struct x86_debug_reg_state *dr = &debug_reg_state;
+
+ win32_require_context (th);
+
th->context.Dr0 = dr->dr_mirror[0];
th->context.Dr1 = dr->dr_mirror[1];
th->context.Dr2 = dr->dr_mirror[2];
/* th->context.Dr6 = dr->dr_status_mirror;
FIXME: should we set dr6 also ?? */
th->context.Dr7 = dr->dr_control_mirror;
- }
- SetThreadContext (th->h, &th->context);
+ th->debug_registers_changed = 0;
+ }
}
static void
i386_thread_added (win32_thread_info *th)
{
- /* Set the debug registers for the new thread if they are used. */
- if (debug_registers_used)
- {
- struct i386_debug_reg_state *dr = &debug_reg_state;
- th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
- GetThreadContext (th->h, &th->context);
-
- th->context.Dr0 = dr->dr_mirror[0];
- 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;
- FIXME: should we set dr6 also ?? */
- th->context.Dr7 = dr->dr_control_mirror;
-
- SetThreadContext (th->h, &th->context);
- th->context.ContextFlags = 0;
- }
+ th->debug_registers_changed = 1;
}
static void
th->context.EFlags |= FLAG_TRACE_BIT;
}
-#ifndef __x86_64
+#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
};
#undef context_offset
-#else /* __x86_64 */
+#else /* __x86_64__ */
#define context_offset(x) (offsetof (CONTEXT, x))
static const int mappings[] =
};
#undef context_offset
-#endif /* __x86_64 */
+#endif /* __x86_64__ */
/* Fetch register from gdbserver regcache data. */
static void
#define i386_win32_breakpoint_len 1
static void
-init_windows_x86 (void)
+i386_arch_setup (void)
{
-#ifdef __x86_64
- init_registers_amd64 ();
+ struct target_desc *tdesc;
+
+#ifdef __x86_64__
+ tdesc = amd64_create_target_description (X86_XSTATE_SSE_MASK, false,
+ false, false);
+ const char **expedite_regs = amd64_expedite_regs;
#else
- init_registers_i386 ();
+ tdesc = i386_create_target_description (X86_XSTATE_SSE_MASK, false, false);
+ const char **expedite_regs = i386_expedite_regs;
#endif
+
+ init_target_desc (tdesc, expedite_regs);
+
+ win32_tdesc = tdesc;
}
struct win32_target_ops the_low_target = {
- init_windows_x86,
+ i386_arch_setup,
sizeof (mappings) / sizeof (mappings[0]),
i386_initial_stuff,
i386_get_thread_context,
- i386_set_thread_context,
+ i386_prepare_to_resume,
i386_thread_added,
i386_fetch_inferior_register,
i386_store_inferior_register,
i386_single_step,
&i386_win32_breakpoint,
i386_win32_breakpoint_len,
+ i386_supports_z_point_type,
i386_insert_point,
i386_remove_point,
- i386_stopped_by_watchpoint,
- i386_stopped_data_address
+ x86_stopped_by_watchpoint,
+ x86_stopped_data_address
};
projects / deliverable / binutils-gdb.git / blobdiff