| /* Target-dependent code for NetBSD/hppa |
| |
| Copyright (C) 2008-2024 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 <http://www.gnu.org/licenses/>. */ |
| |
| #include "osabi.h" |
| #include "regcache.h" |
| #include "regset.h" |
| |
| #include "trad-frame.h" |
| #include "tramp-frame.h" |
| |
| #include "hppa-tdep.h" |
| #include "hppa-bsd-tdep.h" |
| #include "netbsd-tdep.h" |
| #include "gdbarch.h" |
| |
| /* From <machine/mcontext.h>. */ |
| 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 *, |
| const frame_info_ptr &, |
| struct trad_frame_cache *, |
| CORE_ADDR); |
| |
| static const struct tramp_frame hppanbsd_sigtramp_si4 = |
| { |
| SIGTRAMP_FRAME, |
| 4, |
| { |
| { 0xc7d7c012, ULONGEST_MAX }, /* bb,>=,n %arg3, 30, 1f */ |
| { 0xd6e01c1e, ULONGEST_MAX }, /* depwi 0,31,2,%arg3 */ |
| { 0x0ee81093, ULONGEST_MAX }, /* ldw 4(%arg3), %r19 */ |
| { 0x0ee01097, ULONGEST_MAX }, /* ldw 0(%arg3), %arg3 */ |
| /* 1: */ |
| { 0xe8404000, ULONGEST_MAX }, /* blr %r0, %rp */ |
| { 0xeae0c002, ULONGEST_MAX }, /* bv,n %r0(%arg3) */ |
| { 0x08000240, ULONGEST_MAX }, /* nop */ |
| |
| { 0x0803025a, ULONGEST_MAX }, /* copy %r3, %arg0 */ |
| { 0x20200801, ULONGEST_MAX }, /* ldil -40000000, %r1 */ |
| { 0xe420e008, ULONGEST_MAX }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ |
| { 0x34160268, ULONGEST_MAX }, /* ldi 134, %t1 ; SYS_setcontext */ |
| |
| { 0x081c025a, ULONGEST_MAX }, /* copy ret0, %arg0 */ |
| { 0x20200801, ULONGEST_MAX }, /* ldil -40000000, %r1 */ |
| { 0xe420e008, ULONGEST_MAX }, /* be,l 4(%sr7, %r1), %sr0, %r31 */ |
| { 0x34160002, ULONGEST_MAX }, /* ldi 1, %t1 ; SYS_exit */ |
| { TRAMP_SENTINEL_INSN, ULONGEST_MAX } |
| }, |
| hppanbsd_sigtramp_cache_init |
| }; |
| |
| |
| static void |
| hppanbsd_sigtramp_cache_init (const struct tramp_frame *self, |
| const frame_info_ptr &this_frame, |
| struct trad_frame_cache *this_cache, |
| CORE_ADDR func) |
| { |
| 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 <machine/reg.h>. */ |
| #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 = (const gdb_byte *) 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 (i, regs + hppanbsd_reg_offset[i]); |
| } |
| |
| /* NetBSD/hppa register set. */ |
| |
| static const struct regset hppanbsd_gregset = |
| { |
| NULL, |
| hppanbsd_supply_gregset |
| }; |
| |
| /* Iterate over supported core file register note sections. */ |
| |
| static void |
| hppanbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, |
| iterate_over_regset_sections_cb *cb, |
| void *cb_data, |
| const struct regcache *regcache) |
| { |
| cb (".reg", HPPANBSD_SIZEOF_GREGS, HPPANBSD_SIZEOF_GREGS, &hppanbsd_gregset, |
| NULL, cb_data); |
| } |
| |
| static void |
| hppanbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| { |
| /* Obviously NetBSD is BSD-based. */ |
| hppabsd_init_abi (info, gdbarch); |
| |
| nbsd_init_abi (info, gdbarch); |
| |
| /* Core file support. */ |
| set_gdbarch_iterate_over_regset_sections |
| (gdbarch, hppanbsd_iterate_over_regset_sections); |
| |
| tramp_frame_prepend_unwinder (gdbarch, &hppanbsd_sigtramp_si4); |
| } |
| |
| void _initialize_hppanbsd_tdep (); |
| void |
| _initialize_hppanbsd_tdep () |
| { |
| gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_NETBSD, |
| hppanbsd_init_abi); |
| } |