From 03b62bbbce3dc5f15131d9e78f77d035cd1cffb3 Mon Sep 17 00:00:00 2001 From: Simon Marchi Date: Tue, 22 Nov 2016 16:14:24 -0500 Subject: Normalize names of some source files Most tdep/nat files are named: --tdep.c --nat.c A few files do not respect this scheme. This patch renames them so that they are consistent with the rest of the files. It builds fine with --enable-targets=all, but that doesn't test the nat files. I can only hope that my grep skill is good enough. gdb/ChangeLog: * Makefile.in (ALL_64_TARGET_OBS, ALL_TARGET_OBS, HFILES_NO_SRCDIR, ALLDEPFILES): Rename files. * alphabsd-nat.c: Rename to ... * alpha-bsd-nat.c: ... this, adjust include. * alphabsd-tdep.c: Rename to ... * alpha-bsd-tdep.c: ... this, adjust include. * alphabsd-tdep.h: Rename to ... * alpha-bsd-tdep.h: ... this, adjust include barrier and comment. * alphafbsd-tdep.c: Rename to ... * alpha-fbsd-tdep.c: ... this. * alphanbsd-tdep.c: Rename to ... * alpha-nbsd-tdep.c: ... this, adjust include. * alphaobsd-tdep.c: Rename to ... * alpha-obsd-tdep.c: ... this, adjust include. * amd64bsd-nat.c: Rename to ... * amd64-bsd-nat.c: ... this, adjust include. * amd64fbsd-nat.c: Rename to ... * amd64-fbsd-nat.c: ... this, adjust include. * amd64fbsd-tdep.c: Rename to ... * amd64-fbsd-tdep.c: ... this, adjust include. * amd64nbsd-nat.c: Rename to ... * amd64-nbsd-nat.c: ... this. * amd64nbsd-tdep.c: Rename to ... * amd64-nbsd-tdep.c: ... this. * amd64obsd-nat.c: Rename to ... * amd64-obsd-nat.c: ... this. * amd64obsd-tdep.c: Rename to ... * amd64-obsd-tdep.c: ... this. * amd64-tdep.h: Update comments. * armbsd-tdep.c: Rename to ... * arm-bsd-tdep.c: ... this. * armnbsd-nat.c: Rename to ... * arm-nbsd-nat.c: ... this. * armnbsd-tdep.c: Rename to ... * arm-nbsd-tdep.c: ... this. * armobsd-tdep.c: Rename to ... * arm-obsd-tdep.c: ... this. * arm-tdep.h: Update comments. * hppabsd-tdep.c: Rename to ... * hppa-bsd-tdep.c: ... this, adjust include. * hppabsd-tdep.h: Rename to ... * hppa-bsd-tdep.h: ... this, adjust include barrier and comment. * hppanbsd-nat.c: Rename to ... * hppa-nbsd-nat.c: ... this. * hppanbsd-tdep.c: Rename to ... * hppa-nbsd-tdep.c: ... this, adjust include. * hppaobsd-nat.c: Rename to ... * hppa-obsd-nat.c: ... this. * hppaobsd-tdep.c: Rename to ... * hppa-obsd-tdep.c: ... this, adjust include. * i386bsd-nat.c: Rename to ... * i386-bsd-nat.c: ... this, adjust include. * i386bsd-nat.h: Rename to ... * i386-bsd-nat.h: ... this, adjust include barrier and comment. * i386bsd-tdep.c: Rename to ... * i386-bsd-tdep.c: ... this. * i386fbsd-nat.c: Rename to ... * i386-fbsd-nat.c: ... this, adjust include. * i386fbsd-tdep.c: Rename to ... * i386-fbsd-tdep.c: ... this, adjust include. * i386fbsd-tdep.h: Rename to ... * i386-fbsd-tdep.h: ... this, adjust include barrier and comment. * i386gnu-nat.c: Rename to ... * i386-gnu-nat.c: ... this. * i386gnu-tdep.c: Rename to ... * i386-gnu-tdep.c: ... this. * i386nbsd-nat.c: Rename to ... * i386-nbsd-nat.c: ... this, adjust include. * i386nbsd-tdep.c: Rename to ... * i386-nbsd-tdep.c: ... this. * i386obsd-nat.c: Rename to ... * i386-obsd-nat.c: ... this, adjust include. * i386obsd-tdep.c: Rename to ... * i386-obsd-tdep.c: ... this. * i386v4-nat.c: Rename to ... * i386-v4-nat.c: ... this. * i386-tdep.h: Update comments. * m68k-tdep.h: Update comments. * m68kbsd-nat.c: Rename to ... * m68k-bsd-nat.c: ... this. * m68kbsd-tdep.c: Rename to ... * m68k-bsd-tdep.c: ... this. * m68klinux-nat.c: Rename to ... * m68k-linux-nat.c: ... this. * m68klinux-tdep.c: Rename to ... * m68k-linux-tdep.c: ... this. * m88kbsd-nat.c: Rename to ... * m88k-bsd-nat.c: ... this. * mipsnbsd-nat.c: Rename to ... * mips-nbsd-nat.c: ... this, adjust include. * mipsnbsd-tdep.c: Rename to ... * mips-nbsd-tdep.c: ... this, adjust include. * mipsnbsd-tdep.h: Rename to ... * mips-nbsd-tdep.h: ... this, adjust include barrier and comment. * mips64obsd-nat.c: Rename to ... * mips64-obsd-nat.c: ... this. * mips64obsd-tdep.c: Rename to ... * mips64-obsd-tdep.c: ... this. * ppcfbsd-nat.c: Rename to ... * ppc-fbsd-nat.c: ... this, adjust include. * ppcfbsd-tdep.c: Rename to ... * ppc-fbsd-tdep.c: ... this, adjust include. * ppcfbsd-tdep.h: Rename to ... * ppc-fbsd-tdep.h: ... this, adjust include barrier and comment. * ppcnbsd-nat.c: Rename to ... * ppc-nbsd-nat.c: ... this, adjust include. * ppcnbsd-tdep.c: Rename to ... * ppc-nbsd-tdep.c: ... this, adjust include. * ppcnbsd-tdep.h: Rename to ... * ppc-nbsd-tdep.h: ... this, adjust include barrier and comment. * ppcobsd-nat.c: Rename to ... * ppc-obsd-nat.c: ... this, adjust include. * ppcobsd-tdep.c: Rename to ... * ppc-obsd-tdep.c: ... this, adjust include. * ppcobsd-tdep.h: Rename to ... * ppc-obsd-tdep.h: ... this, adjust include barrier and comment. * shnbsd-nat.c: Rename to ... * sh-nbsd-nat.c: ... this. * shnbsd-tdep.c: Rename to ... * sh-nbsd-tdep.c: ... this. * sparcnbsd-nat.c: Rename to ... * sparc-nbsd-nat.c: ... this. * sparcnbsd-tdep.c: Rename to ... * sparc-nbsd-tdep.c: ... this. * sparcobsd-tdep.c: Rename to ... * sparc-obsd-tdep.c: ... this. * sparc64fbsd-nat.c: Rename to ... * sparc64-fbsd-nat.c: ... this. * sparc64fbsd-tdep.c: Rename to ... * sparc64-fbsd-tdep.c: ... this. * sparc64nbsd-nat.c: Rename to ... * sparc64-nbsd-nat.c: ... this. * sparc64nbsd-tdep.c: Rename to ... * sparc64-nbsd-tdep.c: ... this. * sparc64obsd-nat.c: Rename to ... * sparc64-obsd-nat.c: ... this. * sparc64obsd-tdep.c: Rename to ... * sparc64-obsd-tdep.c: ... this. * sparc64-tdep.h: Update comments. * vaxbsd-nat.c: Rename to ... * vax-bsd-nat.c: ... this. * vaxnbsd-tdep.c: Rename to ... * vax-nbsd-tdep.c: ... this. * vaxobsd-tdep.c: Rename to ... * vax-obsd-tdep.c: ... this. * x86bsd-nat.h: Rename to ... * x86-bsd-nat.h: ... this, adjust include barrier and comment. * x86bsd-nat.c: Rename to ... * x86-bsd-nat.c: ... this, adjust include. * configure.tgt: Update renamed files. * config/alpha/fbsd.mh: Update renamed files. * config/alpha/nbsd.mh: Update renamed files. * config/arm/nbsdelf.mh: Update renamed files. * config/djgpp/fnchange.lst: Update renamed files. * config/i386/fbsd.mh: Update renamed files. * config/i386/fbsd64.mh: Update renamed files. * config/i386/i386gnu.mh: Update renamed files. * config/i386/i386sol2.mh: Update renamed files. * config/i386/nbsd64.mh: Update renamed files. * config/i386/nbsdelf.mh: Update renamed files. * config/i386/obsd.mh: Update renamed files. * config/i386/obsd64.mh: Update renamed files. * config/i386/sol2-64.mh: Update renamed files. * config/m68k/linux.mh: Update renamed files. * config/m68k/nbsdelf.mh: Update renamed files. * config/m68k/obsd.mh: Update renamed files. * config/m88k/obsd.mh: Update renamed files. * config/mips/nbsd.mh: Update renamed files. * config/mips/obsd64.mh: Update renamed files. * config/pa/nbsd.mh: Update renamed files. * config/pa/obsd.mh: Update renamed files. * config/powerpc/fbsd.mh: Update renamed files. * config/powerpc/nbsd.mh: Update renamed files. * config/powerpc/obsd.mh: Update renamed files. * config/sh/nbsd.mh: Update renamed files. * config/sparc/fbsd.mh: Update renamed files. * config/sparc/nbsd64.mh: Update renamed files. * config/sparc/nbsdelf.mh: Update renamed files. * config/sparc/obsd64.mh: Update renamed files. * config/vax/nbsdelf.mh: Update renamed files. * config/vax/obsd.mh: Update renamed files. --- gdb/sparc-obsd-tdep.c | 258 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 258 insertions(+) create mode 100644 gdb/sparc-obsd-tdep.c (limited to 'gdb/sparc-obsd-tdep.c') diff --git a/gdb/sparc-obsd-tdep.c b/gdb/sparc-obsd-tdep.c new file mode 100644 index 0000000..21c8d6a --- /dev/null +++ b/gdb/sparc-obsd-tdep.c @@ -0,0 +1,258 @@ +/* Target-dependent code for OpenBSD/sparc. + + Copyright (C) 2004-2016 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 "floatformat.h" +#include "frame.h" +#include "frame-unwind.h" +#include "gdbcore.h" +#include "osabi.h" +#include "regcache.h" +#include "symtab.h" +#include "trad-frame.h" + +#include "obsd-tdep.h" +#include "sparc-tdep.h" +#include "solib-svr4.h" +#include "bsd-uthread.h" + +/* Signal trampolines. */ + +/* The OpenBSD kernel maps the signal trampoline at some random + location in user space, which means that the traditional BSD way of + detecting it won't work. + + The signal trampoline will be mapped at an address that is page + aligned. We recognize the signal trampoline by looking for the + sigreturn system call. */ + +static const int sparc32obsd_page_size = 4096; + +static int +sparc32obsd_pc_in_sigtramp (CORE_ADDR pc, const char *name) +{ + CORE_ADDR start_pc = (pc & ~(sparc32obsd_page_size - 1)); + unsigned long insn; + + if (name) + return 0; + + /* Check for "restore %g0, SYS_sigreturn, %g1". */ + insn = sparc_fetch_instruction (start_pc + 0xec); + if (insn != 0x83e82067) + return 0; + + /* Check for "t ST_SYSCALL". */ + insn = sparc_fetch_instruction (start_pc + 0xf4); + if (insn != 0x91d02000) + return 0; + + return 1; +} + +static struct sparc_frame_cache * +sparc32obsd_sigtramp_frame_cache (struct frame_info *this_frame, + void **this_cache) +{ + struct sparc_frame_cache *cache; + CORE_ADDR addr; + + if (*this_cache) + return (struct sparc_frame_cache *) *this_cache; + + cache = sparc_frame_cache (this_frame, this_cache); + gdb_assert (cache == *this_cache); + + /* If we couldn't find the frame's function, we're probably dealing + with an on-stack signal trampoline. */ + if (cache->pc == 0) + { + cache->pc = get_frame_pc (this_frame); + cache->pc &= ~(sparc32obsd_page_size - 1); + + /* Since we couldn't find the frame's function, the cache was + initialized under the assumption that we're frameless. */ + sparc_record_save_insn (cache); + addr = get_frame_register_unsigned (this_frame, SPARC_FP_REGNUM); + cache->base = addr; + } + + cache->saved_regs = sparc32nbsd_sigcontext_saved_regs (this_frame); + + return cache; +} + +static void +sparc32obsd_sigtramp_frame_this_id (struct frame_info *this_frame, + void **this_cache, + struct frame_id *this_id) +{ + struct sparc_frame_cache *cache = + sparc32obsd_sigtramp_frame_cache (this_frame, this_cache); + + (*this_id) = frame_id_build (cache->base, cache->pc); +} + +static struct value * +sparc32obsd_sigtramp_frame_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum) +{ + struct sparc_frame_cache *cache = + sparc32obsd_sigtramp_frame_cache (this_frame, this_cache); + + return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum); +} + +static int +sparc32obsd_sigtramp_frame_sniffer (const struct frame_unwind *self, + struct frame_info *this_frame, + void **this_cache) +{ + CORE_ADDR pc = get_frame_pc (this_frame); + const char *name; + + find_pc_partial_function (pc, &name, NULL, NULL); + if (sparc32obsd_pc_in_sigtramp (pc, name)) + return 1; + + return 0; +} +static const struct frame_unwind sparc32obsd_sigtramp_frame_unwind = +{ + SIGTRAMP_FRAME, + default_frame_unwind_stop_reason, + sparc32obsd_sigtramp_frame_this_id, + sparc32obsd_sigtramp_frame_prev_register, + NULL, + sparc32obsd_sigtramp_frame_sniffer +}; + + + +/* Offset wthin the thread structure where we can find %fp and %i7. */ +#define SPARC32OBSD_UTHREAD_FP_OFFSET 128 +#define SPARC32OBSD_UTHREAD_PC_OFFSET 132 + +static void +sparc32obsd_supply_uthread (struct regcache *regcache, + int regnum, CORE_ADDR addr) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + CORE_ADDR fp, fp_addr = addr + SPARC32OBSD_UTHREAD_FP_OFFSET; + gdb_byte buf[4]; + + gdb_assert (regnum >= -1); + + fp = read_memory_unsigned_integer (fp_addr, 4, byte_order); + if (regnum == SPARC_SP_REGNUM || regnum == -1) + { + store_unsigned_integer (buf, 4, byte_order, fp); + regcache_raw_supply (regcache, SPARC_SP_REGNUM, buf); + + if (regnum == SPARC_SP_REGNUM) + return; + } + + if (regnum == SPARC32_PC_REGNUM || regnum == SPARC32_NPC_REGNUM + || regnum == -1) + { + CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET; + + i7 = read_memory_unsigned_integer (i7_addr, 4, byte_order); + if (regnum == SPARC32_PC_REGNUM || regnum == -1) + { + store_unsigned_integer (buf, 4, byte_order, i7 + 8); + regcache_raw_supply (regcache, SPARC32_PC_REGNUM, buf); + } + if (regnum == SPARC32_NPC_REGNUM || regnum == -1) + { + store_unsigned_integer (buf, 4, byte_order, i7 + 12); + regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, buf); + } + + if (regnum == SPARC32_PC_REGNUM || regnum == SPARC32_NPC_REGNUM) + return; + } + + sparc_supply_rwindow (regcache, fp, regnum); +} + +static void +sparc32obsd_collect_uthread(const struct regcache *regcache, + int regnum, CORE_ADDR addr) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + CORE_ADDR sp; + gdb_byte buf[4]; + + gdb_assert (regnum >= -1); + + if (regnum == SPARC_SP_REGNUM || regnum == -1) + { + CORE_ADDR fp_addr = addr + SPARC32OBSD_UTHREAD_FP_OFFSET; + + regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf); + write_memory (fp_addr,buf, 4); + } + + if (regnum == SPARC32_PC_REGNUM || regnum == -1) + { + CORE_ADDR i7, i7_addr = addr + SPARC32OBSD_UTHREAD_PC_OFFSET; + + regcache_raw_collect (regcache, SPARC32_PC_REGNUM, buf); + i7 = extract_unsigned_integer (buf, 4, byte_order) - 8; + write_memory_unsigned_integer (i7_addr, 4, byte_order, i7); + + if (regnum == SPARC32_PC_REGNUM) + return; + } + + regcache_raw_collect (regcache, SPARC_SP_REGNUM, buf); + sp = extract_unsigned_integer (buf, 4, byte_order); + sparc_collect_rwindow (regcache, sp, regnum); +} + + +static void +sparc32obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + /* OpenBSD/sparc is very similar to NetBSD/sparc ELF. */ + sparc32nbsd_elf_init_abi (info, gdbarch); + + set_gdbarch_skip_solib_resolver (gdbarch, obsd_skip_solib_resolver); + + frame_unwind_append_unwinder (gdbarch, &sparc32obsd_sigtramp_frame_unwind); + + /* OpenBSD provides a user-level threads implementation. */ + bsd_uthread_set_supply_uthread (gdbarch, sparc32obsd_supply_uthread); + bsd_uthread_set_collect_uthread (gdbarch, sparc32obsd_collect_uthread); +} + + +/* Provide a prototype to silence -Wmissing-prototypes. */ +void _initialize_sparc32obsd_tdep (void); + +void +_initialize_sparc32obsd_tdep (void) +{ + gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_OPENBSD_ELF, + sparc32obsd_init_abi); +} -- cgit v1.1