1 /* Target-dependent code for GDB, the GNU debugger. 2 3 Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, 4 Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, 21 Boston, MA 02111-1307, USA. */ 22 23 #ifndef PPC_TDEP_H 24 #define PPC_TDEP_H 25 26 struct gdbarch; 27 struct frame_info; 28 struct value; 29 struct regcache; 30 struct type; 31 32 /* From ppc-linux-tdep.c... */ 33 enum return_value_convention ppc_sysv_abi_return_value (struct gdbarch *gdbarch, 34 struct type *valtype, 35 struct regcache *regcache, 36 void *readbuf, 37 const void *writebuf); 38 enum return_value_convention ppc_sysv_abi_broken_return_value (struct gdbarch *gdbarch, 39 struct type *valtype, 40 struct regcache *regcache, 41 void *readbuf, 42 const void *writebuf); 43 CORE_ADDR ppc_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, 44 struct value *function, 45 struct regcache *regcache, 46 CORE_ADDR bp_addr, int nargs, 47 struct value **args, CORE_ADDR sp, 48 int struct_return, 49 CORE_ADDR struct_addr); 50 CORE_ADDR ppc64_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, 51 struct value *function, 52 struct regcache *regcache, 53 CORE_ADDR bp_addr, int nargs, 54 struct value **args, CORE_ADDR sp, 55 int struct_return, 56 CORE_ADDR struct_addr); 57 CORE_ADDR ppc64_sysv_abi_adjust_breakpoint_address (struct gdbarch *gdbarch, 58 CORE_ADDR bpaddr); 59 int ppc_linux_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache); 60 struct link_map_offsets *ppc_linux_svr4_fetch_link_map_offsets (void); 61 void ppc_linux_supply_gregset (struct regcache *regcache, 62 int regnum, const void *gregs, size_t size, 63 int wordsize); 64 void ppc_linux_supply_fpregset (const struct regset *regset, 65 struct regcache *regcache, 66 int regnum, const void *gregs, size_t size); 67 68 enum return_value_convention ppc64_sysv_abi_return_value (struct gdbarch *gdbarch, 69 struct type *valtype, 70 struct regcache *regcache, 71 void *readbuf, 72 const void *writebuf); 73 74 /* From rs6000-tdep.c... */ 75 int altivec_register_p (int regno); 76 int spe_register_p (int regno); 77 78 /* Return non-zero if the architecture described by GDBARCH has 79 floating-point registers (f0 --- f31 and fpscr). */ 80 int ppc_floating_point_unit_p (struct gdbarch *gdbarch); 81 82 /* Register set description. */ 83 84 struct ppc_reg_offsets 85 { 86 /* General-purpose registers. */ 87 int r0_offset; 88 int pc_offset; 89 int ps_offset; 90 int cr_offset; 91 int lr_offset; 92 int ctr_offset; 93 int xer_offset; 94 int mq_offset; 95 96 /* Floating-point registers. */ 97 int f0_offset; 98 int fpscr_offset; 99 100 /* AltiVec registers. */ 101 int vr0_offset; 102 int vscr_offset; 103 int vrsave_offset; 104 }; 105 106 /* Supply register REGNUM in the general-purpose register set REGSET 107 from the buffer specified by GREGS and LEN to register cache 108 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ 109 110 extern void ppc_supply_gregset (const struct regset *regset, 111 struct regcache *regcache, 112 int regnum, const void *gregs, size_t len); 113 114 /* Supply register REGNUM in the floating-point register set REGSET 115 from the buffer specified by FPREGS and LEN to register cache 116 REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ 117 118 extern void ppc_supply_fpregset (const struct regset *regset, 119 struct regcache *regcache, 120 int regnum, const void *fpregs, size_t len); 121 122 /* Collect register REGNUM in the general-purpose register set 123 REGSET. from register cache REGCACHE into the buffer specified by 124 GREGS and LEN. If REGNUM is -1, do this for all registers in 125 REGSET. */ 126 127 extern void ppc_collect_gregset (const struct regset *regset, 128 const struct regcache *regcache, 129 int regnum, void *gregs, size_t len); 130 131 /* Collect register REGNUM in the floating-point register set 132 REGSET. from register cache REGCACHE into the buffer specified by 133 FPREGS and LEN. If REGNUM is -1, do this for all registers in 134 REGSET. */ 135 136 extern void ppc_collect_fpregset (const struct regset *regset, 137 const struct regcache *regcache, 138 int regnum, void *fpregs, size_t len); 139 140 /* Private data that this module attaches to struct gdbarch. */ 141 142 struct gdbarch_tdep 143 { 144 int wordsize; /* size in bytes of fixed-point word */ 145 const struct reg *regs; /* from current variant */ 146 int ppc_gp0_regnum; /* GPR register 0 */ 147 int ppc_gprs_pseudo_p; /* non-zero if GPRs are pseudo-registers */ 148 int ppc_toc_regnum; /* TOC register */ 149 int ppc_ps_regnum; /* Processor (or machine) status (%msr) */ 150 int ppc_cr_regnum; /* Condition register */ 151 int ppc_lr_regnum; /* Link register */ 152 int ppc_ctr_regnum; /* Count register */ 153 int ppc_xer_regnum; /* Integer exception register */ 154 155 /* On PPC and RS6000 variants that have no floating-point 156 registers, the next two members will be -1. */ 157 int ppc_fp0_regnum; /* floating-point register 0 */ 158 int ppc_fpscr_regnum; /* Floating point status and condition 159 register */ 160 161 int ppc_mq_regnum; /* Multiply/Divide extension register */ 162 int ppc_vr0_regnum; /* First AltiVec register */ 163 int ppc_vrsave_regnum; /* Last AltiVec register */ 164 int ppc_ev0_regnum; /* First ev register */ 165 int ppc_ev31_regnum; /* Last ev register */ 166 int ppc_acc_regnum; /* SPE 'acc' register */ 167 int ppc_spefscr_regnum; /* SPE 'spefscr' register */ 168 int lr_frame_offset; /* Offset to ABI specific location where 169 link register is saved. */ 170 }; 171 172 173 /* Constants for register set sizes. */ 174 enum 175 { 176 ppc_num_gprs = 32, /* 32 general-purpose registers */ 177 ppc_num_fprs = 32 /* 32 floating-point registers */ 178 }; 179 180 #endif 181