/* Target-dependent code for NetBSD/hppa Copyright (C) 2008-2014 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include "defs.h" #include "osabi.h" #include "regcache.h" #include "regset.h" #include "trad-frame.h" #include "tramp-frame.h" #include "gdb_assert.h" #include #include "hppa-tdep.h" #include "hppabsd-tdep.h" /* From . */ static int hppanbsd_mc_reg_offset[] = { /* r0 ... r31 */ -1, 1 * 4, 2 * 4, 3 * 4, 4 * 4, 5 * 4, 6 * 4, 7 * 4, 8 * 4, 9 * 4, 10 * 4, 11 * 4, 12 * 4, 13 * 4, 14 * 4, 15 * 4, 16 * 4, 17 * 4, 18 * 4, 19 * 4, 20 * 4, 21 * 4, 22 * 4, 23 * 4, 24 * 4, 25 * 4, 26 * 4, 27 * 4, 28 * 4, 29 * 4, 30 * 4, 31 * 4, 32 * 4, /* HPPA_SAR_REGNUM */ 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ -1, /* HPPA_EIEM_REGNUM */ -1, /* HPPA_IIR_REGNUM */ -1, /* HPPA_ISR_REGNUM */ -1, /* HPPA_IOR_REGNUM */ 0 * 4, /* HPPA_IPSW_REGNUM */ -1, /* spare? */ 41 * 4, /* HPPA_SR4_REGNUM */ 37 * 4, /* sr0 */ 38 * 4, /* sr1 */ 39 * 4, /* sr2 */ 40 * 4, /* sr3 */ /* more tbd */ }; static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *, struct frame_info *, struct trad_frame_cache *, CORE_ADDR); static const struct tramp_frame hppanbsd_sigtramp_si4 = { SIGTRAMP_FRAME, 4, { { 0xc7d7c012, -1 }, /* bb,>=,n %arg3, 30, 1f */ { 0xd6e01c1e, -1 }, /* depwi 0,31,2,%arg3 */ { 0x0ee81093, -1 }, /* ldw 4(%arg3), %r19 */ { 0x0ee01097, -1 }, /* ldw 0(%arg3), %arg3 */ /* 1: */ { 0xe8404000, -1 }, /* blr %r0, %rp */ { 0xeae0c002, -1 }, /* bv,n %r0(%arg3) */ { 0x08000240, -1 }, /* nop */ { 0x0803025a, -1 }, /* copy %r3, %arg0 */ { 0x20200801, -1 }, /* ldil -40000000, %r1 */ { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ { 0x34160268, -1 }, /* ldi 134, %t1 ; SYS_setcontext */ { 0x081c025a, -1 }, /* copy ret0, %arg0 */ { 0x20200801, -1 }, /* ldil -40000000, %r1 */ { 0xe420e008, -1 }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ { 0x34160002, -1 }, /* ldi 1, %t1 ; SYS_exit */ { TRAMP_SENTINEL_INSN, -1 } }, hppanbsd_sigtramp_cache_init }; static void hppanbsd_sigtramp_cache_init (const struct tramp_frame *self, struct frame_info *this_frame, struct trad_frame_cache *this_cache, CORE_ADDR func) { struct gdbarch *gdbarch = get_frame_arch (this_frame); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); CORE_ADDR sp = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM); CORE_ADDR base; int *reg_offset; int num_regs; int i; reg_offset = hppanbsd_mc_reg_offset; num_regs = ARRAY_SIZE (hppanbsd_mc_reg_offset); /* frame pointer */ base = sp - 0x280; /* offsetof(struct sigframe_siginfo, sf_uc) = 128 */ base += 128; /* offsetof(ucontext_t, uc_mcontext) == 40 */ base += 40; for (i = 0; i < num_regs; i++) if (reg_offset[i] != -1) trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]); /* Construct the frame ID using the function start. */ trad_frame_set_id (this_cache, frame_id_build (sp, func)); } /* Core file support. */ /* Sizeof `struct reg' in . */ #define HPPANBSD_SIZEOF_GREGS (44 * 4) static int hppanbsd_reg_offset[] = { /* r0 ... r31 */ -1, 1 * 4, 2 * 4, 3 * 4, 4 * 4, 5 * 4, 6 * 4, 7 * 4, 8 * 4, 9 * 4, 10 * 4, 11 * 4, 12 * 4, 13 * 4, 14 * 4, 15 * 4, 16 * 4, 17 * 4, 18 * 4, 19 * 4, 20 * 4, 21 * 4, 22 * 4, 23 * 4, 24 * 4, 25 * 4, 26 * 4, 27 * 4, 28 * 4, 29 * 4, 30 * 4, 31 * 4, 32 * 4, /* HPPA_SAR_REGNUM */ 35 * 4, /* HPPA_PCOQ_HEAD_REGNUM */ 33 * 4, /* HPPA_PCSQ_HEAD_REGNUM */ 36 * 4, /* HPPA_PCOQ_TAIL_REGNUM */ 34 * 4, /* HPPA_PCSQ_TAIL_REGNUM */ -1, /* HPPA_EIEM_REGNUM */ -1, /* HPPA_IIR_REGNUM */ -1, /* HPPA_ISR_REGNUM */ -1, /* HPPA_IOR_REGNUM */ 0 * 4, /* HPPA_IPSW_REGNUM */ }; /* Supply register REGNUM from the buffer specified by GREGS and LEN in the general-purpose register set REGSET to register cache REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ static void hppanbsd_supply_gregset (const struct regset *regset, struct regcache *regcache, int regnum, const void *gregs, size_t len) { const gdb_byte *regs = gregs; int i; gdb_assert (len >= HPPANBSD_SIZEOF_GREGS); for (i = 0; i < ARRAY_SIZE (hppanbsd_reg_offset); i++) if (hppanbsd_reg_offset[i] != -1) if (regnum == -1 || regnum == i) regcache_raw_supply (regcache, i, regs + hppanbsd_reg_offset[i]); } /* NetBSD/hppa register set. */ static const struct regset hppanbsd_gregset = { NULL, hppanbsd_supply_gregset }; /* Return the appropriate register set for the core section identified by SECT_NAME and SECT_SIZE. */ static const struct regset * hppanbsd_regset_from_core_section (struct gdbarch *gdbarch, const char *sect_name, size_t sect_size) { if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPANBSD_SIZEOF_GREGS) return &hppanbsd_gregset; return NULL; } static void hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { /* Obviously NetBSD is BSD-based. */ hppabsd_init_abi (info, gdbarch); /* Core file support. */ set_gdbarch_regset_from_core_section (gdbarch, hppanbsd_regset_from_core_section); tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4); } /* Provide a prototype to silence -Wmissing-prototypes. */ extern initialize_file_ftype _initialize_hppanbsd_tdep; void _initialize_hppanbsd_tdep (void) { gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD_ELF, hppanbsd_init_abi); }