1 /* libunwind - a platform-independent unwind library 2 Copyright (C) 2008 CodeSourcery 3 4 This file is part of libunwind. 5 6 Permission is hereby granted, free of charge, to any person obtaining 7 a copy of this software and associated documentation files (the 8 "Software"), to deal in the Software without restriction, including 9 without limitation the rights to use, copy, modify, merge, publish, 10 distribute, sublicense, and/or sell copies of the Software, and to 11 permit persons to whom the Software is furnished to do so, subject to 12 the following conditions: 13 14 The above copyright notice and this permission notice shall be 15 included in all copies or substantial portions of the Software. 16 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 21 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 24 25 #include "unwind_i.h" 26 27 static inline int common_init(struct cursor * c,unsigned use_prev_instr)28 common_init (struct cursor *c, unsigned use_prev_instr) 29 { 30 int ret, i; 31 32 for (i = 0; i < 32; i++) 33 c->dwarf.loc[i] = DWARF_REG_LOC (&c->dwarf, UNW_MIPS_R0 + i); 34 for (i = 32; i < DWARF_NUM_PRESERVED_REGS; ++i) 35 c->dwarf.loc[i] = DWARF_NULL_LOC; 36 37 c->dwarf.loc[UNW_MIPS_PC] = DWARF_REG_LOC (&c->dwarf, UNW_MIPS_PC); 38 39 ret = dwarf_get (&c->dwarf, c->dwarf.loc[UNW_MIPS_PC], &c->dwarf.ip); 40 if (ret < 0) 41 return ret; 42 43 ret = dwarf_get (&c->dwarf, DWARF_REG_LOC (&c->dwarf, UNW_MIPS_R29), 44 &c->dwarf.cfa); 45 if (ret < 0) 46 return ret; 47 48 /* FIXME: Initialisation for other registers. */ 49 50 c->dwarf.args_size = 0; 51 c->dwarf.ret_addr_column = 0; 52 c->dwarf.stash_frames = 0; 53 c->dwarf.use_prev_instr = use_prev_instr; 54 c->dwarf.pi_valid = 0; 55 c->dwarf.pi_is_dynamic = 0; 56 c->dwarf.hint = 0; 57 c->dwarf.prev_rs = 0; 58 /* ANDROID support update. */ 59 c->dwarf.frame = 0; 60 /* End of ANDROID update. */ 61 62 return 0; 63 } 64