| /* GNU/Linux/SH specific low level interface, for the remote server for GDB. |
| Copyright (C) 1995-1996, 1998-2003, 2005, 2007-2012 Free Software |
| Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "server.h" |
| #include "linux-low.h" |
| |
| /* Defined in auto-generated file reg-sh.c. */ |
| void init_registers_sh (void); |
| |
| #ifdef HAVE_SYS_REG_H |
| #include <sys/reg.h> |
| #endif |
| |
| #include <asm/ptrace.h> |
| |
| #define sh_num_regs 41 |
| |
| /* Currently, don't check/send MQ. */ |
| static int sh_regmap[] = { |
| 0, 4, 8, 12, 16, 20, 24, 28, |
| 32, 36, 40, 44, 48, 52, 56, 60, |
| |
| REG_PC*4, REG_PR*4, REG_GBR*4, -1, |
| REG_MACH*4, REG_MACL*4, REG_SR*4, |
| REG_FPUL*4, REG_FPSCR*4, |
| |
| REG_FPREG0*4+0, REG_FPREG0*4+4, REG_FPREG0*4+8, REG_FPREG0*4+12, |
| REG_FPREG0*4+16, REG_FPREG0*4+20, REG_FPREG0*4+24, REG_FPREG0*4+28, |
| REG_FPREG0*4+32, REG_FPREG0*4+36, REG_FPREG0*4+40, REG_FPREG0*4+44, |
| REG_FPREG0*4+48, REG_FPREG0*4+52, REG_FPREG0*4+56, REG_FPREG0*4+60, |
| }; |
| |
| static int |
| sh_cannot_store_register (int regno) |
| { |
| return 0; |
| } |
| |
| static int |
| sh_cannot_fetch_register (int regno) |
| { |
| return 0; |
| } |
| |
| static CORE_ADDR |
| sh_get_pc (struct regcache *regcache) |
| { |
| unsigned long pc; |
| collect_register_by_name (regcache, "pc", &pc); |
| return pc; |
| } |
| |
| static void |
| sh_set_pc (struct regcache *regcache, CORE_ADDR pc) |
| { |
| unsigned long newpc = pc; |
| supply_register_by_name (regcache, "pc", &newpc); |
| } |
| |
| /* Correct in either endianness, obviously. */ |
| static const unsigned short sh_breakpoint = 0xc3c3; |
| #define sh_breakpoint_len 2 |
| |
| static int |
| sh_breakpoint_at (CORE_ADDR where) |
| { |
| unsigned short insn; |
| |
| (*the_target->read_memory) (where, (unsigned char *) &insn, 2); |
| if (insn == sh_breakpoint) |
| return 1; |
| |
| /* If necessary, recognize more trap instructions here. GDB only uses the |
| one. */ |
| return 0; |
| } |
| |
| /* Provide only a fill function for the general register set. ps_lgetregs |
| will use this for NPTL support. */ |
| |
| static void sh_fill_gregset (struct regcache *regcache, void *buf) |
| { |
| int i; |
| |
| for (i = 0; i < 23; i++) |
| if (sh_regmap[i] != -1) |
| collect_register (regcache, i, (char *) buf + sh_regmap[i]); |
| } |
| |
| struct regset_info target_regsets[] = { |
| { 0, 0, 0, 0, GENERAL_REGS, sh_fill_gregset, NULL }, |
| { 0, 0, 0, -1, -1, NULL, NULL } |
| }; |
| |
| struct linux_target_ops the_low_target = { |
| init_registers_sh, |
| sh_num_regs, |
| sh_regmap, |
| NULL, |
| sh_cannot_fetch_register, |
| sh_cannot_store_register, |
| sh_get_pc, |
| sh_set_pc, |
| (const unsigned char *) &sh_breakpoint, |
| sh_breakpoint_len, |
| NULL, |
| 0, |
| sh_breakpoint_at, |
| }; |