df7e526582
This commit renames nine files that contain code used by both 32- and 64-bit Intel ports such that their names are prefixed with "x86" rather than "i386". All types, functions and variables within these files are likewise renamed such that their names are prefixed with "x86" rather than "i386". This makes GDB follow the convention used by gdbserver such that 32-bit Intel code lives in files called "i386-*", 64-bit Intel code lives in files called "amd64-*", and code for both 32- and 64-bit Intel lives in files called "x86-*". This commit only renames OS-independent files. The Linux ports of both GDB and gdbserver now follow the i386/amd64/x86 convention fully. Some ports still use the old convention where "i386" in file/function/ type/variable names can mean "32-bit only" or "32- and 64-bit" but I don't want to touch ports I can't fully test except where absolutely necessary. gdb/ChangeLog: * i386-nat.h: Renamed as... * x86-nat.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * i386-nat.c: Renamed as... * x86-nat.c: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * common/i386-xstate.h: Renamed as... * common/x86-xstate.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-cpuid.h: Renamed as... * nat/x86-cpuid.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-gcc-cpuid.h: Renamed as... * nat/x86-gcc-cpuid.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-dregs.h: Renamed as... * nat/x86-dregs.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * nat/i386-dregs.c: Renamed as... * nat/x86-dregs.c: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. gdb/gdbserver/ChangeLog: * i386-low.h: Renamed as... * x86-low.h: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated. * i386-low.c: Renamed as... * x86-low.c: New file. All type, function and variable name prefixes changed from "i386_" to "x86_". All references updated.
465 lines
12 KiB
C
465 lines
12 KiB
C
/* Copyright (C) 2007-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include "win32-low.h"
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#include "x86-low.h"
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#ifndef CONTEXT_EXTENDED_REGISTERS
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#define CONTEXT_EXTENDED_REGISTERS 0
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#endif
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#define FCS_REGNUM 27
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#define FOP_REGNUM 31
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#define FLAG_TRACE_BIT 0x100
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#ifdef __x86_64__
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/* Defined in auto-generated file reg-amd64.c. */
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void init_registers_amd64 (void);
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extern const struct target_desc *tdesc_amd64;
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#else
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/* Defined in auto-generated file reg-i386.c. */
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void init_registers_i386 (void);
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extern const struct target_desc *tdesc_i386;
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#endif
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static struct x86_debug_reg_state debug_reg_state;
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static int debug_registers_changed = 0;
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static int debug_registers_used = 0;
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/* Update the inferior's debug register REGNUM from STATE. */
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static void
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x86_dr_low_set_addr (int regnum, CORE_ADDR addr)
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{
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gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
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/* debug_reg_state.dr_mirror is already set.
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Just notify i386_set_thread_context, i386_thread_added
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that the registers need to be updated. */
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debug_registers_changed = 1;
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debug_registers_used = 1;
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}
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static CORE_ADDR
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x86_dr_low_get_addr (int regnum)
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{
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gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
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return debug_reg_state.dr_mirror[regnum];
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}
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/* Update the inferior's DR7 debug control register from STATE. */
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static void
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x86_dr_low_set_control (unsigned long control)
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{
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/* debug_reg_state.dr_control_mirror is already set.
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Just notify i386_set_thread_context, i386_thread_added
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that the registers need to be updated. */
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debug_registers_changed = 1;
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debug_registers_used = 1;
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}
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static unsigned long
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x86_dr_low_get_control (void)
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{
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return debug_reg_state.dr_control_mirror;
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}
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/* Get the value of the DR6 debug status register from the inferior
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and record it in STATE. */
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static unsigned long
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x86_dr_low_get_status (void)
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{
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/* We don't need to do anything here, the last call to thread_rec for
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current_event.dwThreadId id has already set it. */
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return debug_reg_state.dr_status_mirror;
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}
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/* Low-level function vector. */
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struct x86_dr_low_type x86_dr_low =
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{
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x86_dr_low_set_control,
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x86_dr_low_set_addr,
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x86_dr_low_get_addr,
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x86_dr_low_get_status,
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x86_dr_low_get_control,
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sizeof (void *),
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};
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/* Breakpoint/watchpoint support. */
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static int
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i386_supports_z_point_type (char z_type)
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{
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switch (z_type)
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{
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case Z_PACKET_WRITE_WP:
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case Z_PACKET_ACCESS_WP:
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return 1;
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default:
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return 0;
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}
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}
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static int
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i386_insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
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int size, struct raw_breakpoint *bp)
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{
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switch (type)
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{
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case raw_bkpt_type_write_wp:
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case raw_bkpt_type_access_wp:
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{
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enum target_hw_bp_type hw_type
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= raw_bkpt_type_to_target_hw_bp_type (type);
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return x86_dr_insert_watchpoint (&debug_reg_state,
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hw_type, addr, size);
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}
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default:
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/* Unsupported. */
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return 1;
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}
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}
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static int
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i386_remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
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int size, struct raw_breakpoint *bp)
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{
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switch (type)
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{
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case raw_bkpt_type_write_wp:
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case raw_bkpt_type_access_wp:
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{
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enum target_hw_bp_type hw_type
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= raw_bkpt_type_to_target_hw_bp_type (type);
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return x86_dr_remove_watchpoint (&debug_reg_state,
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hw_type, addr, size);
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}
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default:
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/* Unsupported. */
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return 1;
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}
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}
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static int
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x86_stopped_by_watchpoint (void)
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{
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return x86_dr_stopped_by_watchpoint (&debug_reg_state);
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}
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static CORE_ADDR
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x86_stopped_data_address (void)
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{
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CORE_ADDR addr;
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if (x86_dr_stopped_data_address (&debug_reg_state, &addr))
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return addr;
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return 0;
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}
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static void
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i386_initial_stuff (void)
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{
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x86_low_init_dregs (&debug_reg_state);
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debug_registers_changed = 0;
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debug_registers_used = 0;
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}
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static void
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i386_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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{
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/* Requesting the CONTEXT_EXTENDED_REGISTERS register set fails if
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the system doesn't support extended registers. */
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static DWORD extended_registers = CONTEXT_EXTENDED_REGISTERS;
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again:
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th->context.ContextFlags = (CONTEXT_FULL
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| CONTEXT_FLOATING_POINT
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| CONTEXT_DEBUG_REGISTERS
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| extended_registers);
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if (!GetThreadContext (th->h, &th->context))
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{
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DWORD e = GetLastError ();
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if (extended_registers && e == ERROR_INVALID_PARAMETER)
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{
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extended_registers = 0;
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goto again;
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}
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error ("GetThreadContext failure %ld\n", (long) e);
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}
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debug_registers_changed = 0;
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if (th->tid == current_event->dwThreadId)
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{
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/* Copy dr values from the current thread. */
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struct x86_debug_reg_state *dr = &debug_reg_state;
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dr->dr_mirror[0] = th->context.Dr0;
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dr->dr_mirror[1] = th->context.Dr1;
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dr->dr_mirror[2] = th->context.Dr2;
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dr->dr_mirror[3] = th->context.Dr3;
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dr->dr_status_mirror = th->context.Dr6;
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dr->dr_control_mirror = th->context.Dr7;
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}
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}
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static void
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i386_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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{
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if (debug_registers_changed)
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{
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struct x86_debug_reg_state *dr = &debug_reg_state;
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th->context.Dr0 = dr->dr_mirror[0];
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th->context.Dr1 = dr->dr_mirror[1];
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th->context.Dr2 = dr->dr_mirror[2];
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th->context.Dr3 = dr->dr_mirror[3];
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/* th->context.Dr6 = dr->dr_status_mirror;
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FIXME: should we set dr6 also ?? */
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th->context.Dr7 = dr->dr_control_mirror;
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}
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SetThreadContext (th->h, &th->context);
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}
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static void
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i386_thread_added (win32_thread_info *th)
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{
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/* Set the debug registers for the new thread if they are used. */
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if (debug_registers_used)
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{
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struct x86_debug_reg_state *dr = &debug_reg_state;
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th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
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GetThreadContext (th->h, &th->context);
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th->context.Dr0 = dr->dr_mirror[0];
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th->context.Dr1 = dr->dr_mirror[1];
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th->context.Dr2 = dr->dr_mirror[2];
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th->context.Dr3 = dr->dr_mirror[3];
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/* th->context.Dr6 = dr->dr_status_mirror;
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FIXME: should we set dr6 also ?? */
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th->context.Dr7 = dr->dr_control_mirror;
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SetThreadContext (th->h, &th->context);
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th->context.ContextFlags = 0;
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}
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}
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static void
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i386_single_step (win32_thread_info *th)
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{
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th->context.EFlags |= FLAG_TRACE_BIT;
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}
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#ifndef __x86_64__
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/* An array of offset mappings into a Win32 Context structure.
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This is a one-to-one mapping which is indexed by gdb's register
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numbers. It retrieves an offset into the context structure where
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the 4 byte register is located.
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An offset value of -1 indicates that Win32 does not provide this
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register in it's CONTEXT structure. In this case regptr will return
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a pointer into a dummy register. */
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#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
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static const int mappings[] = {
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context_offset (Eax),
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context_offset (Ecx),
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context_offset (Edx),
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context_offset (Ebx),
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context_offset (Esp),
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context_offset (Ebp),
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context_offset (Esi),
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context_offset (Edi),
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context_offset (Eip),
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context_offset (EFlags),
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context_offset (SegCs),
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context_offset (SegSs),
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context_offset (SegDs),
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context_offset (SegEs),
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context_offset (SegFs),
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context_offset (SegGs),
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context_offset (FloatSave.RegisterArea[0 * 10]),
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context_offset (FloatSave.RegisterArea[1 * 10]),
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context_offset (FloatSave.RegisterArea[2 * 10]),
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context_offset (FloatSave.RegisterArea[3 * 10]),
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context_offset (FloatSave.RegisterArea[4 * 10]),
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context_offset (FloatSave.RegisterArea[5 * 10]),
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context_offset (FloatSave.RegisterArea[6 * 10]),
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context_offset (FloatSave.RegisterArea[7 * 10]),
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context_offset (FloatSave.ControlWord),
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context_offset (FloatSave.StatusWord),
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context_offset (FloatSave.TagWord),
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context_offset (FloatSave.ErrorSelector),
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context_offset (FloatSave.ErrorOffset),
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context_offset (FloatSave.DataSelector),
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context_offset (FloatSave.DataOffset),
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context_offset (FloatSave.ErrorSelector),
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/* XMM0-7 */
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context_offset (ExtendedRegisters[10 * 16]),
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context_offset (ExtendedRegisters[11 * 16]),
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context_offset (ExtendedRegisters[12 * 16]),
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context_offset (ExtendedRegisters[13 * 16]),
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context_offset (ExtendedRegisters[14 * 16]),
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context_offset (ExtendedRegisters[15 * 16]),
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context_offset (ExtendedRegisters[16 * 16]),
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context_offset (ExtendedRegisters[17 * 16]),
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/* MXCSR */
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context_offset (ExtendedRegisters[24])
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};
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#undef context_offset
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#else /* __x86_64__ */
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#define context_offset(x) (offsetof (CONTEXT, x))
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static const int mappings[] =
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{
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context_offset (Rax),
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context_offset (Rbx),
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context_offset (Rcx),
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context_offset (Rdx),
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context_offset (Rsi),
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context_offset (Rdi),
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context_offset (Rbp),
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context_offset (Rsp),
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context_offset (R8),
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context_offset (R9),
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context_offset (R10),
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context_offset (R11),
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context_offset (R12),
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context_offset (R13),
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context_offset (R14),
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context_offset (R15),
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context_offset (Rip),
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context_offset (EFlags),
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context_offset (SegCs),
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context_offset (SegSs),
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context_offset (SegDs),
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context_offset (SegEs),
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context_offset (SegFs),
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context_offset (SegGs),
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context_offset (FloatSave.FloatRegisters[0]),
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context_offset (FloatSave.FloatRegisters[1]),
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context_offset (FloatSave.FloatRegisters[2]),
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context_offset (FloatSave.FloatRegisters[3]),
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context_offset (FloatSave.FloatRegisters[4]),
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context_offset (FloatSave.FloatRegisters[5]),
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context_offset (FloatSave.FloatRegisters[6]),
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context_offset (FloatSave.FloatRegisters[7]),
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context_offset (FloatSave.ControlWord),
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context_offset (FloatSave.StatusWord),
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context_offset (FloatSave.TagWord),
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context_offset (FloatSave.ErrorSelector),
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context_offset (FloatSave.ErrorOffset),
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context_offset (FloatSave.DataSelector),
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context_offset (FloatSave.DataOffset),
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context_offset (FloatSave.ErrorSelector)
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/* XMM0-7 */ ,
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context_offset (Xmm0),
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context_offset (Xmm1),
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context_offset (Xmm2),
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context_offset (Xmm3),
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context_offset (Xmm4),
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context_offset (Xmm5),
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context_offset (Xmm6),
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context_offset (Xmm7),
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context_offset (Xmm8),
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context_offset (Xmm9),
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context_offset (Xmm10),
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context_offset (Xmm11),
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context_offset (Xmm12),
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context_offset (Xmm13),
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context_offset (Xmm14),
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context_offset (Xmm15),
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/* MXCSR */
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context_offset (FloatSave.MxCsr)
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};
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#undef context_offset
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#endif /* __x86_64__ */
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/* Fetch register from gdbserver regcache data. */
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static void
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i386_fetch_inferior_register (struct regcache *regcache,
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win32_thread_info *th, int r)
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{
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char *context_offset = (char *) &th->context + mappings[r];
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long l;
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if (r == FCS_REGNUM)
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{
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l = *((long *) context_offset) & 0xffff;
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supply_register (regcache, r, (char *) &l);
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}
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else if (r == FOP_REGNUM)
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{
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l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
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supply_register (regcache, r, (char *) &l);
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}
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else
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supply_register (regcache, r, context_offset);
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}
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/* Store a new register value into the thread context of TH. */
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static void
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i386_store_inferior_register (struct regcache *regcache,
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win32_thread_info *th, int r)
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{
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char *context_offset = (char *) &th->context + mappings[r];
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collect_register (regcache, r, context_offset);
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}
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static const unsigned char i386_win32_breakpoint = 0xcc;
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#define i386_win32_breakpoint_len 1
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static void
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i386_arch_setup (void)
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{
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#ifdef __x86_64__
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init_registers_amd64 ();
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win32_tdesc = tdesc_amd64;
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#else
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init_registers_i386 ();
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win32_tdesc = tdesc_i386;
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#endif
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}
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struct win32_target_ops the_low_target = {
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i386_arch_setup,
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sizeof (mappings) / sizeof (mappings[0]),
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i386_initial_stuff,
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i386_get_thread_context,
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i386_set_thread_context,
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i386_thread_added,
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i386_fetch_inferior_register,
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i386_store_inferior_register,
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i386_single_step,
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&i386_win32_breakpoint,
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i386_win32_breakpoint_len,
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i386_supports_z_point_type,
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i386_insert_point,
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i386_remove_point,
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x86_stopped_by_watchpoint,
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x86_stopped_data_address
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};
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