diff --git a/src/ia64/Ginit-ia64.c b/src/ia64/Ginit-ia64.c index e69de29b..2d6eaf42 100644 --- a/src/ia64/Ginit-ia64.c +++ b/src/ia64/Ginit-ia64.c @@ -0,0 +1,228 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2001-2003 Hewlett-Packard Co + Contributed by David Mosberger-Tang + +This file is part of libunwind. + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ + +#include +#include + +#include "rse.h" +#include "unwind_i.h" + +#ifdef UNW_REMOTE_ONLY + +/* unw_local_addr_space is a NULL pointer in this case. */ +unw_addr_space_t unw_local_addr_space; + +#else + +static struct unw_addr_space local_addr_space; + +unw_addr_space_t unw_local_addr_space = &local_addr_space; + +static inline void * +uc_addr (ucontext_t *uc, int reg) +{ + void *addr; + + switch (reg) + { + case UNW_IA64_IP: addr = &uc->uc_mcontext.sc_br[0]; break; + case UNW_IA64_CFM: addr = &uc->uc_mcontext.sc_ar_pfs; break; + case UNW_IA64_AR_RNAT: addr = &uc->uc_mcontext.sc_ar_rnat; break; + case UNW_IA64_AR_UNAT: addr = &uc->uc_mcontext.sc_ar_unat; break; + case UNW_IA64_AR_LC: addr = &uc->uc_mcontext.sc_ar_lc; break; + case UNW_IA64_AR_FPSR: addr = &uc->uc_mcontext.sc_ar_fpsr; break; + case UNW_IA64_PR: addr = &uc->uc_mcontext.sc_pr; break; + /* This may look confusing, but it's correct: AR_BSPSTORE needs + to return the address past the last word written, which is + stored in sc_ar_bsp. On the other hand, AR_BSP needs to + return the address that was in ar.bsp at the time the context + was captured. As described in unw_init_local(), sc_ar_bsp is + (ab-)used for this purpose. */ + case UNW_IA64_AR_BSP: addr = &uc->uc_mcontext.sc_rbs_base; break; + case UNW_IA64_AR_BSPSTORE: addr = &uc->uc_mcontext.sc_ar_bsp; break; + + case UNW_IA64_GR + 4 ... UNW_IA64_GR + 7: + case UNW_IA64_GR + 12: + addr = &uc->uc_mcontext.sc_gr[reg - UNW_IA64_GR]; + break; + + case UNW_IA64_BR + 1 ... UNW_IA64_BR + 5: + addr = &uc->uc_mcontext.sc_br[reg - UNW_IA64_BR]; + break; + + case UNW_IA64_FR+ 2 ... UNW_IA64_FR+ 5: + case UNW_IA64_FR+16 ... UNW_IA64_FR+31: + addr = &uc->uc_mcontext.sc_fr[reg - UNW_IA64_FR]; + break; + + default: + addr = NULL; + } + return addr; +} + +# ifdef UNW_LOCAL_ONLY + +void * +tdep_uc_addr (ucontext_t *uc, int reg) +{ + return uc_addr (uc, reg); +} + +# endif /* UNW_LOCAL_ONLY */ + +static void +put_unwind_info (unw_addr_space_t as, unw_proc_info_t *proc_info, void *arg) +{ + /* it's a no-op */ +} + +static int +get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dyn_info_list_addr, + void *arg) +{ + *dyn_info_list_addr = (unw_word_t) &_U_dyn_info_list; + return 0; +} + +static int +access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val, int write, + void *arg) +{ + if (write) + { + debug (100, "%s: mem[%lx] <- %lx\n", __FUNCTION__, addr, *val); + *(unw_word_t *) addr = *val; + } + else + { + *val = *(unw_word_t *) addr; + debug (100, "%s: mem[%lx] -> %lx\n", __FUNCTION__, addr, *val); + } + return 0; +} + +static int +access_reg (unw_addr_space_t as, unw_regnum_t reg, unw_word_t *val, int write, + void *arg) +{ + unw_word_t *addr, mask; + ucontext_t *uc = arg; + + if (reg >= UNW_IA64_FR && reg < UNW_IA64_FR + 128) + goto badreg; + + if (reg >= UNW_IA64_NAT + 4 && reg <= UNW_IA64_NAT + 7) + { + mask = ((unw_word_t) 1) << (reg - UNW_IA64_NAT); + if (write) + { + if (*val) + uc->uc_mcontext.sc_nat |= mask; + else + uc->uc_mcontext.sc_nat &= ~mask; + } + else + *val = (uc->uc_mcontext.sc_nat & mask) != 0; + + if (write) + debug (100, "%s: %s <- %lx\n", __FUNCTION__, unw_regname (reg), *val); + else + debug (100, "%s: %s -> %lx\n", __FUNCTION__, unw_regname (reg), *val); + return 0; + } + + addr = uc_addr (uc, reg); + if (!addr) + goto badreg; + + if (write) + { + *(unw_word_t *) addr = *val; + debug (100, "%s: %s <- %lx\n", __FUNCTION__, unw_regname (reg), *val); + } + else + { + *val = *(unw_word_t *) addr; + debug (100, "%s: %s -> %lx\n", __FUNCTION__, unw_regname (reg), *val); + } + return 0; + + badreg: + debug (1, "%s: bad register number %u\n", __FUNCTION__, reg); + return -UNW_EBADREG; +} + +static int +access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val, + int write, void *arg) +{ + ucontext_t *uc = arg; + unw_fpreg_t *addr; + + if (reg < UNW_IA64_FR || reg >= UNW_IA64_FR + 128) + goto badreg; + + addr = uc_addr (uc, reg); + if (!addr) + goto badreg; + + if (write) + { + debug (100, "%s: %s <- %016lx.%016lx\n", __FUNCTION__, + unw_regname (reg), val->raw.bits[1], val->raw.bits[0]); + *(unw_fpreg_t *) addr = *val; + } + else + { + *val = *(unw_fpreg_t *) addr; + debug (100, "%s: %s -> %016lx.%016lx\n", __FUNCTION__, + unw_regname (reg), val->raw.bits[1], val->raw.bits[0]); + } + return 0; + + badreg: + debug (1, "%s: bad register number %u\n", __FUNCTION__, reg); + /* attempt to access a non-preserved register */ + return -UNW_EBADREG; +} + +HIDDEN void +ia64_local_addr_space_init (void) +{ + memset (&local_addr_space, 0, sizeof (local_addr_space)); + ia64_script_cache_init (&local_addr_space.global_cache); + local_addr_space.big_endian = (__BYTE_ORDER == __BIG_ENDIAN); + local_addr_space.caching_policy = UNW_CACHE_GLOBAL; + local_addr_space.acc.find_proc_info = UNW_ARCH_OBJ (find_proc_info); + local_addr_space.acc.put_unwind_info = put_unwind_info; + local_addr_space.acc.get_dyn_info_list_addr = get_dyn_info_list_addr; + local_addr_space.acc.access_mem = access_mem; + local_addr_space.acc.access_reg = access_reg; + local_addr_space.acc.access_fpreg = access_fpreg; + local_addr_space.acc.resume = ia64_local_resume; +} + +#endif /* !UNW_REMOTE_ONLY */