| 1 | /* Target-dependent code for SuperH running NetBSD, for GDB. |
| 2 | Copyright 2002, 2003 Free Software Foundation, Inc. |
| 3 | Contributed by Wasabi Systems, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdbcore.h" |
| 24 | #include "regcache.h" |
| 25 | #include "value.h" |
| 26 | #include "osabi.h" |
| 27 | |
| 28 | #include "solib-svr4.h" |
| 29 | |
| 30 | #include "nbsd-tdep.h" |
| 31 | #include "sh-tdep.h" |
| 32 | #include "shnbsd-tdep.h" |
| 33 | |
| 34 | /* Convert an r0-r15 register number into an offset into a ptrace |
| 35 | register structure. */ |
| 36 | static const int regmap[] = |
| 37 | { |
| 38 | (20 * 4), /* r0 */ |
| 39 | (19 * 4), /* r1 */ |
| 40 | (18 * 4), /* r2 */ |
| 41 | (17 * 4), /* r3 */ |
| 42 | (16 * 4), /* r4 */ |
| 43 | (15 * 4), /* r5 */ |
| 44 | (14 * 4), /* r6 */ |
| 45 | (13 * 4), /* r7 */ |
| 46 | (12 * 4), /* r8 */ |
| 47 | (11 * 4), /* r9 */ |
| 48 | (10 * 4), /* r10 */ |
| 49 | ( 9 * 4), /* r11 */ |
| 50 | ( 8 * 4), /* r12 */ |
| 51 | ( 7 * 4), /* r13 */ |
| 52 | ( 6 * 4), /* r14 */ |
| 53 | ( 5 * 4), /* r15 */ |
| 54 | }; |
| 55 | |
| 56 | #define SIZEOF_STRUCT_REG (21 * 4) |
| 57 | |
| 58 | void |
| 59 | shnbsd_supply_reg (char *regs, int regno) |
| 60 | { |
| 61 | int i; |
| 62 | |
| 63 | if (regno == PC_REGNUM || regno == -1) |
| 64 | supply_register (PC_REGNUM, regs + (0 * 4)); |
| 65 | |
| 66 | if (regno == SR_REGNUM || regno == -1) |
| 67 | supply_register (SR_REGNUM, regs + (1 * 4)); |
| 68 | |
| 69 | if (regno == PR_REGNUM || regno == -1) |
| 70 | supply_register (PR_REGNUM, regs + (2 * 4)); |
| 71 | |
| 72 | if (regno == MACH_REGNUM || regno == -1) |
| 73 | supply_register (MACH_REGNUM, regs + (3 * 4)); |
| 74 | |
| 75 | if (regno == MACL_REGNUM || regno == -1) |
| 76 | supply_register (MACL_REGNUM, regs + (4 * 4)); |
| 77 | |
| 78 | if ((regno >= R0_REGNUM && regno <= (R0_REGNUM + 15)) || regno == -1) |
| 79 | { |
| 80 | for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++) |
| 81 | if (regno == i || regno == -1) |
| 82 | supply_register (i, regs + regmap[i - R0_REGNUM]); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | void |
| 87 | shnbsd_fill_reg (char *regs, int regno) |
| 88 | { |
| 89 | int i; |
| 90 | |
| 91 | if (regno == PC_REGNUM || regno == -1) |
| 92 | regcache_collect (PC_REGNUM, regs + (0 * 4)); |
| 93 | |
| 94 | if (regno == SR_REGNUM || regno == -1) |
| 95 | regcache_collect (SR_REGNUM, regs + (1 * 4)); |
| 96 | |
| 97 | if (regno == PR_REGNUM || regno == -1) |
| 98 | regcache_collect (PR_REGNUM, regs + (2 * 4)); |
| 99 | |
| 100 | if (regno == MACH_REGNUM || regno == -1) |
| 101 | regcache_collect (MACH_REGNUM, regs + (3 * 4)); |
| 102 | |
| 103 | if (regno == MACL_REGNUM || regno == -1) |
| 104 | regcache_collect (MACL_REGNUM, regs + (4 * 4)); |
| 105 | |
| 106 | if ((regno >= R0_REGNUM && regno <= (R0_REGNUM + 15)) || regno == -1) |
| 107 | { |
| 108 | for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++) |
| 109 | if (regno == i || regno == -1) |
| 110 | regcache_collect (i, regs + regmap[i - R0_REGNUM]); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | static void |
| 115 | fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, |
| 116 | int which, CORE_ADDR ignore) |
| 117 | { |
| 118 | /* We get everything from the .reg section. */ |
| 119 | if (which != 0) |
| 120 | return; |
| 121 | |
| 122 | if (core_reg_size < SIZEOF_STRUCT_REG) |
| 123 | { |
| 124 | warning ("Wrong size register set in core file."); |
| 125 | return; |
| 126 | } |
| 127 | |
| 128 | /* Integer registers. */ |
| 129 | shnbsd_supply_reg (core_reg_sect, -1); |
| 130 | } |
| 131 | |
| 132 | static void |
| 133 | fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, |
| 134 | int which, CORE_ADDR ignore) |
| 135 | { |
| 136 | switch (which) |
| 137 | { |
| 138 | case 0: /* Integer registers. */ |
| 139 | if (core_reg_size != SIZEOF_STRUCT_REG) |
| 140 | warning ("Wrong size register set in core file."); |
| 141 | else |
| 142 | shnbsd_supply_reg (core_reg_sect, -1); |
| 143 | break; |
| 144 | |
| 145 | default: |
| 146 | /* Don't know what kind of register request this is; just ignore it. */ |
| 147 | break; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | static struct core_fns shnbsd_core_fns = |
| 152 | { |
| 153 | bfd_target_unknown_flavour, /* core_flavour */ |
| 154 | default_check_format, /* check_format */ |
| 155 | default_core_sniffer, /* core_sniffer */ |
| 156 | fetch_core_registers, /* core_read_registers */ |
| 157 | NULL /* next */ |
| 158 | }; |
| 159 | |
| 160 | static struct core_fns shnbsd_elfcore_fns = |
| 161 | { |
| 162 | bfd_target_elf_flavour, /* core_flavour */ |
| 163 | default_check_format, /* check_format */ |
| 164 | default_core_sniffer, /* core_sniffer */ |
| 165 | fetch_elfcore_registers, /* core_read_registers */ |
| 166 | NULL /* next */ |
| 167 | }; |
| 168 | |
| 169 | static int |
| 170 | shnbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name) |
| 171 | { |
| 172 | /* FIXME: Need to add support for kernel-provided signal trampolines. */ |
| 173 | return (nbsd_pc_in_sigtramp (pc, func_name)); |
| 174 | } |
| 175 | |
| 176 | static void |
| 177 | shnbsd_init_abi (struct gdbarch_info info, |
| 178 | struct gdbarch *gdbarch) |
| 179 | { |
| 180 | set_gdbarch_pc_in_sigtramp (gdbarch, shnbsd_pc_in_sigtramp); |
| 181 | |
| 182 | set_solib_svr4_fetch_link_map_offsets (gdbarch, |
| 183 | nbsd_ilp32_solib_svr4_fetch_link_map_offsets); |
| 184 | } |
| 185 | |
| 186 | void |
| 187 | _initialize_shnbsd_tdep (void) |
| 188 | { |
| 189 | add_core_fns (&shnbsd_core_fns); |
| 190 | add_core_fns (&shnbsd_elfcore_fns); |
| 191 | |
| 192 | gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF, |
| 193 | shnbsd_init_abi); |
| 194 | } |