diff --git a/src/ia64/Ginit.c b/src/ia64/Ginit.c index e69de29b..ee12143c 100644 --- a/src/ia64/Ginit.c +++ b/src/ia64/Ginit.c @@ -0,0 +1,380 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2001-2002 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" + +struct ia64_global_unwind_state unw = + { + first_time: 1, + save_order: { + IA64_REG_RP, IA64_REG_PFS, IA64_REG_PSP, IA64_REG_PR, + IA64_REG_UNAT, IA64_REG_LC, IA64_REG_FPSR, IA64_REG_PRI_UNAT_GR + }, + preg_index: { + struct_offset (struct ia64_cursor, pri_unat_loc)/8, /* PRI_UNAT_GR */ + struct_offset (struct ia64_cursor, pri_unat_loc)/8, /* PRI_UNAT_MEM */ + struct_offset (struct ia64_cursor, bsp_loc)/8, + struct_offset (struct ia64_cursor, bspstore_loc)/8, + struct_offset (struct ia64_cursor, pfs_loc)/8, + struct_offset (struct ia64_cursor, rnat_loc)/8, + struct_offset (struct ia64_cursor, psp)/8, + struct_offset (struct ia64_cursor, ip_loc)/8, + struct_offset (struct ia64_cursor, r4_loc)/8, + struct_offset (struct ia64_cursor, r5_loc)/8, + struct_offset (struct ia64_cursor, r6_loc)/8, + struct_offset (struct ia64_cursor, r7_loc)/8, + struct_offset (struct ia64_cursor, nat4_loc)/8, + struct_offset (struct ia64_cursor, nat5_loc)/8, + struct_offset (struct ia64_cursor, nat6_loc)/8, + struct_offset (struct ia64_cursor, nat7_loc)/8, + struct_offset (struct ia64_cursor, unat_loc)/8, + struct_offset (struct ia64_cursor, pr_loc)/8, + struct_offset (struct ia64_cursor, lc_loc)/8, + struct_offset (struct ia64_cursor, fpsr_loc)/8, + struct_offset (struct ia64_cursor, b1_loc)/8, + struct_offset (struct ia64_cursor, b2_loc)/8, + struct_offset (struct ia64_cursor, b3_loc)/8, + struct_offset (struct ia64_cursor, b4_loc)/8, + struct_offset (struct ia64_cursor, b5_loc)/8, + struct_offset (struct ia64_cursor, f2_loc)/8, + struct_offset (struct ia64_cursor, f3_loc)/8, + struct_offset (struct ia64_cursor, f4_loc)/8, + struct_offset (struct ia64_cursor, f5_loc)/8, + struct_offset (struct ia64_cursor, fr_loc[16 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[17 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[18 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[19 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[20 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[21 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[22 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[23 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[24 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[25 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[26 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[27 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[28 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[29 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[30 - 16])/8, + struct_offset (struct ia64_cursor, fr_loc[31 - 16])/8, + }, +#if IA64_UNW_DEBUG + debug_level: 0, + preg_name: { + "pri_unat_gr", "pri_unat_mem", "bsp", "bspstore", "ar.pfs", "ar.rnat", + "psp", "rp", + "r4", "r5", "r6", "r7", + "ar.unat", "pr", "ar.lc", "ar.fpsr", + "b1", "b2", "b3", "b4", "b5", + "f2", "f3", "f4", "f5", + "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", + "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31" + } +#endif +}; + +#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; + case UNW_IA64_AR_BSP: addr = &uc->uc_mcontext.sc_rbs_base; break; + case UNW_IA64_AR_BSPSTORE: addr = &uc->uc_mcontext.sc_rbs_base; 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 * +_Uia64_uc_addr (ucontext_t *uc, int reg) +{ + return uc_addr (uc, reg); +} + +/* Note: It might be tempting to use the LSDA to store + _U_dyn_info_list, but that wouldn't work because the + unwind-info is generally mapped read-only. */ + +unw_dyn_info_list_t _U_dyn_info_list; + +/* Now create a special unwind-table entry which makes it easy for an + unwinder to locate the dynamic registration list. The special + entry covers address range [0-0) and is therefore guaranteed to + be the first in the unwind-table. */ +asm ( +" .section \".IA_64.unwind_info\", \"a\"\n" +".info: data8 (1<<48) | 1\n" /* v1, length==1 (8-byte word) */ +" data8 0\n" /* 8 empty .prologue directives (nops) */ +" data8 0\n" /* personality routine (ignored) */ +" string \"dyn-list\"\n" /* lsda */ +" data8 @segrel(_U_dyn_info_list)\n" +" .previous\n" + +" .section \".IA_64.unwind\", \"a\"\n" +" data8 0, 0, @segrel(.info)\n" +" .previous\n"); + +# 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; +} + +#endif /* !UNW_REMOTE_ONLY */ + +void +ia64_init (void) +{ + extern void unw_hash_index_t_is_too_narrow (void); + extern void unw_cursor_t_is_too_small (void); + uint8_t f1_bytes[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, + 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + uint8_t nat_val_bytes[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xfe, + 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + uint8_t int_val_bytes[16] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0xfe, + 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + uint8_t *lep, *bep; + long i; + +#if IA64_UNW_DEBUG + { + const char *str = getenv ("UNW_DEBUG_LEVEL"); + + if (str) + unw.debug_level = atoi (str); + } +#endif + + mempool_init (&unw.state_record_pool, sizeof (struct ia64_state_record), 0); + mempool_init (&unw.labeled_state_pool, + sizeof (struct ia64_labeled_state), 0); + + unw.f0.raw.bits[0] = 0; + unw.f0.raw.bits[1] = 0; + + lep = (uint8_t *) &unw.f1_le + 16; + bep = (uint8_t *) &unw.f1_be; + for (i = 0; i < 16; ++i) + { + *--lep = f1_bytes[i]; + *bep++ = f1_bytes[i]; + } + + lep = (uint8_t *) &unw.nat_val_le + 16; + bep = (uint8_t *) &unw.nat_val_be; + for (i = 0; i < 16; ++i) + { + *--lep = nat_val_bytes[i]; + *bep++ = nat_val_bytes[i]; + } + + lep = (uint8_t *) &unw.int_val_le + 16; + bep = (uint8_t *) &unw.int_val_be; + for (i = 0; i < 16; ++i) + { + *--lep = int_val_bytes[i]; + *bep++ = int_val_bytes[i]; + } + + if (sizeof (struct ia64_cursor) > sizeof (unw_cursor_t)) + unw_cursor_t_is_too_small(); + + if (8*sizeof(unw_hash_index_t) < IA64_LOG_UNW_HASH_SIZE) + unw_hash_index_t_is_too_narrow(); + + +#ifndef UNW_REMOTE_ONLY + 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 = _Uia64_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 +}