Add support for FreeBSD/i386 ELF.
* i386bsd-nat.c: New file. * config/i386/tm-fbsd.h (HAVE_I387_REGS): Define. Include "i386/tm-i386.h" instead of "i386/tm-i386b.h". (NUM_REGS): Remove redefinition. (USE_STRUCT_CONVENTION): Define. (i386_float_info): Remove prototype. (FLOAT_INFO): Remove define. (JB_ELEMENT_SIZE): Define to 4. (JB_PC): Define to 0. (GET_LONGJMP_TARGET): Define. (SIGTRAMP_START, SIGTRAMP_END): Define. (SIGCONTEXT_PC_OFFSET): Define. (IN_SOLIB_CALL_TRAMPOLINE): Only define if !SVR4_SHARED_LIBS * config/i386/nm-fbsd.h (PTRACE_ARG3_TYPE): Define to caddr_t. (FETCH_INFERIOR_REGISTERS): Define. (ATTACH_DETACH): Define. (kernel_u_size): Remove PARAMS. (register_u_addr): Use CORE_ADDR in prototype where appropriate. Remove PARAMS. (SVR4_SHARED_LIBS) [FREEBSD_ELF || __ELF__ && !FREEBSD_AOUT]: Define. [SVR4_SHARED_LIBS]: Include "elf/common.h". Only define aliases for struct members from <link.h> if !SVR4_SHARED_LIBS. * config/i386/xm-fbsd.h: New file. * config/i386/fbsd.mt (TDEPFILES): Remove solib.o. * config/i386/fbsd.mh (NATDEPFILES): Remove i386b-nat.o. Add core-regset.o i387-nat.o i386bsd-nat.o.
This commit is contained in:
Mark Kettenis
parent
dd167cc82f
commit
e6031aeb52
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@ -1,3 +1,35 @@
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2000-05-25 Mark Kettenis <kettenis@gnu.org>
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Add support for FreeBSD/i386 ELF.
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* i386bsd-nat.c: New file.
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* config/i386/tm-fbsd.h (HAVE_I387_REGS): Define.
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Include "i386/tm-i386.h" instead of "i386/tm-i386b.h".
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(NUM_REGS): Remove redefinition.
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(USE_STRUCT_CONVENTION): Define.
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(i386_float_info): Remove prototype.
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(FLOAT_INFO): Remove define.
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(JB_ELEMENT_SIZE): Define to 4.
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(JB_PC): Define to 0.
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(GET_LONGJMP_TARGET): Define.
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(SIGTRAMP_START, SIGTRAMP_END): Define.
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(SIGCONTEXT_PC_OFFSET): Define.
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(IN_SOLIB_CALL_TRAMPOLINE): Only define if !SVR4_SHARED_LIBS
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* config/i386/nm-fbsd.h (PTRACE_ARG3_TYPE): Define to caddr_t.
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(FETCH_INFERIOR_REGISTERS): Define.
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(ATTACH_DETACH): Define.
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(kernel_u_size): Remove PARAMS.
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(register_u_addr): Use CORE_ADDR in prototype where appropriate.
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Remove PARAMS.
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(SVR4_SHARED_LIBS) [FREEBSD_ELF || __ELF__ && !FREEBSD_AOUT]:
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Define.
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[SVR4_SHARED_LIBS]: Include "elf/common.h".
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Only define aliases for struct members from <link.h> if
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!SVR4_SHARED_LIBS.
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* config/i386/xm-fbsd.h: New file.
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* config/i386/fbsd.mt (TDEPFILES): Remove solib.o.
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* config/i386/fbsd.mh (NATDEPFILES): Remove i386b-nat.o. Add
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core-regset.o i387-nat.o i386bsd-nat.o.
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2000-05-24 Michael Snyder <msnyder@seadog.cygnus.com>
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* findvar.c (value_from_register): Factor code, simplify logic.
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@ -1,5 +1,6 @@
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# Host: Intel 386 running FreeBSD
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XDEPFILES= ser-tcp.o
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NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o core-aout.o i386b-nat.o
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XM_FILE= xm-i386bsd.h
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NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o \
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corelow.o core-aout.o core-regset.o i387-nat.o i386bsd-nat.o
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XM_FILE= xm-fbsd.h
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NAT_FILE= nm-fbsd.h
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@ -1,3 +1,3 @@
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# Target: Intel 386 running FreeBSD
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TDEPFILES= i386-tdep.o i387-tdep.o solib.o
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TDEPFILES= i386-tdep.o i387-tdep.o
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TM_FILE= tm-fbsd.h
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@ -1,5 +1,5 @@
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/* Native-dependent definitions for Intel 386 running BSD Unix, for GDB.
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Copyright 1986, 1987, 1989, 1992, 1996 Free Software Foundation, Inc.
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/* Native-dependent definitions for FreeBSD/i386.
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Copyright (C) 1986, 87, 89, 92, 96, 2000 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -18,11 +18,25 @@
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef NM_FREEBSD_H
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#define NM_FREEBSD_H
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#ifndef NM_FBSD_H
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#define NM_FBSD_H
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/* Be shared lib aware */
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#include "solib.h"
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/* Type of the third argument to the `ptrace' system call. */
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#define PTRACE_ARG3_TYPE caddr_t
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/* Override copies of {fetch,store}_inferior_registers in `infptrace.c'. */
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#define FETCH_INFERIOR_REGISTERS
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/* We can attach and detach. */
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#define ATTACH_DETACH
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/* Support for the user struct. */
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/* Return the size of the user struct. */
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#define KERNEL_U_SIZE kernel_u_size ()
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extern int kernel_u_size (void);
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/* This is the amount to subtract from u.u_ar0
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to get the offset in the core file of the register values. */
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@ -31,14 +45,27 @@
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#define KERNEL_U_ADDR USRSTACK
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#define REGISTER_U_ADDR(addr, blockend, regno) \
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(addr) = i386_register_u_addr ((blockend),(regno));
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(addr) = register_u_addr ((blockend), (regno))
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extern CORE_ADDR register_u_addr (CORE_ADDR blockend, int regno);
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extern int
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i386_register_u_addr PARAMS ((int, int));
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/* Shared library support. */
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#define PTRACE_ARG3_TYPE char*
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/* The FreeBSD <link.h> uses the same condition to distinguish ELF
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from a.out. ELF implies SVR4 shared libraries. */
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#if (defined (FREEBSD_ELF) || defined (__ELF__)) && !defined (FREEBSD_AOUT)
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#define SVR4_SHARED_LIBS
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#endif
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#include "solib.h" /* Support for shared libraries. */
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#ifdef SVR4_SHARED_LIBS
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#include "elf/common.h" /* Additional ELF shared library info. */
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#endif
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#ifndef SVR4_SHARED_LIBS
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/* Make structure definitions match up with those expected in `solib.c'. */
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/* make structure definitions match up with those expected in solib.c */
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#define link_object sod
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#define lo_name sod_name
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#define lo_library sod_library
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@ -91,9 +118,6 @@ i386_register_u_addr PARAMS ((int, int));
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#define ld_un d_un
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#define ld_2 d_sdt
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/* Return sizeof user struct to callers in less machine dependent routines */
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#endif /* !SVR4_SHARED_LIBS */
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#define KERNEL_U_SIZE kernel_u_size()
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extern int kernel_u_size PARAMS ((void));
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#endif /* NM_FREEBSD_H */
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#endif /* NM_FBSD_H */
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@ -1,5 +1,5 @@
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/* Target macro definitions for i386 running FreeBSD
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Copyright (C) 1997 Free Software Foundation, Inc.
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/* Target-dependent definitions for FreeBSD/i386.
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Copyright (C) 1997, 2000 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -18,16 +18,54 @@
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "i386/tm-i386bsd.h"
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#ifndef TM_FBSD_H
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#define TM_FBSD_H
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#define HAVE_I387_REGS
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#include "i386/tm-i386.h"
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#undef NUM_REGS
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#define NUM_REGS 14
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/* FreeBSD uses the old gcc convention for struct returns. */
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#define USE_STRUCT_CONVENTION(gcc_p, type) \
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generic_use_struct_convention (1, type)
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#undef IN_SOLIB_CALL_TRAMPOLINE
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#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) STREQ (name, "_DYNAMIC")
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/* Support for longjmp. */
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/* Details about jmp_buf. It's supposed to be an array of integers. */
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extern i386_float_info ();
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#define FLOAT_INFO i386_float_info ()
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#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
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#define JB_PC 0 /* Array index of saved PC. */
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/* Figure out where the longjmp will land. Store the address that
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longjmp will jump to in *ADDR, and return non-zero if successful. */
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extern int get_longjmp_target (CORE_ADDR *addr);
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#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
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/* Support for signal handlers. */
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/* The sigtramp is above the user stack and immediately below
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the user area. Using constants here allows for cross debugging.
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These are tested for FreeBSD 3.4. */
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#define SIGTRAMP_START(pc) 0xbfbfdf20
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#define SIGTRAMP_END(pc) 0xbfbfdff0
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/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
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#define SIGCONTEXT_PC_OFFSET 20
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/* Shared library support. */
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#ifndef SVR4_SHARED_LIBS
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/* Return non-zero if we are in a shared library trampoline code stub. */
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#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
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(name && !strcmp(name, "_DYNAMIC"))
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#endif /* !SVR4_SHARED_LIBS */
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#endif /* TM_FBSD_H */
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@ -0,0 +1,28 @@
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/* Host-dependent definitions for FreeBSD/i386.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef XM_FBSD_H
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#define XM_FBSD_H
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#define HOST_BYTE_ORDER LITTLE_ENDIAN
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#define HOST_LONG_DOUBLE_FORMAT &floatformat_i387_ext
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#endif /* XM_FBSD_H */
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@ -0,0 +1,238 @@
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/* Native-dependent code for modern i386 BSD's.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <machine/reg.h>
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#include <machine/frame.h>
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#ifdef HAVE_SYS_PROCFS_H
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#include <sys/procfs.h>
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#endif
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#ifndef HAVE_GREGSET_T
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typedef struct reg gregset_t;
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#endif
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#ifndef HAVE_FPREGSET_T
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typedef struct fpreg fpregset_t;
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#endif
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/* In older BSD versions we cannot get at some of the segment
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registers. FreeBSD for example didn't support the %fs and %gs
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registers until the 3.0 release. We have autoconf checks for their
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presence, and deal gracefully with their absence. */
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/* Registers we shouldn't try to fetch. */
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#if !defined (CANNOT_FETCH_REGISTER)
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#define CANNOT_FETCH_REGISTER(regno) cannot_fetch_register (regno)
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#endif
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/* Registers we shouldn't try to store. */
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#if !defined (CANNOT_STORE_REGISTER)
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#define CANNOT_STORE_REGISTER(regno) CANNOT_FETCH_REGISTER (regno)
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#endif
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/* Offset to the gregset_t location where REG is stored. */
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#define REG_OFFSET(reg) offsetof (gregset_t, reg)
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/* At reg_offset[REGNO] you'll find the offset to the gregset_t
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location where the GDB register REGNO is stored. Unsupported
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registers are marked with `-1'. */
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static int reg_offset[] =
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{
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REG_OFFSET (r_eax),
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REG_OFFSET (r_ecx),
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REG_OFFSET (r_edx),
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REG_OFFSET (r_edx),
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REG_OFFSET (r_esp),
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REG_OFFSET (r_ebp),
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REG_OFFSET (r_esi),
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REG_OFFSET (r_edi),
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REG_OFFSET (r_eip),
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REG_OFFSET (r_eflags),
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REG_OFFSET (r_cs),
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REG_OFFSET (r_ss),
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REG_OFFSET (r_ds),
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REG_OFFSET (r_es),
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#ifdef HAVE_R_FS
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REG_OFFSET (r_fs),
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#else
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-1,
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#endif
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#ifdef HAVE_R_GS
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REG_OFFSET (r_gs)
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#else
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-1
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#endif
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};
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#define REG_ADDR(regset, regno) ((char *) (regset) + reg_offset[regno])
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/* Return nonzero if we shouldn't try to fetch register REGNO. */
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static int
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cannot_fetch_register (int regno)
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{
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return (reg_offset[regno] == -1);
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}
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/* Transfering the registers between GDB, inferiors and core files. */
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/* Fill GDB's register array with the genereal-purpose register values
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in *GREGSETP. */
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void
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supply_gregset (gregset_t *gregsetp)
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{
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char buf[MAX_REGISTER_RAW_SIZE];
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int i;
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for (i = 0; i < NUM_GREGS; i++)
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{
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if (CANNOT_FETCH_REGISTER (i))
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{
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memset (buf, 0, REGISTER_RAW_SIZE (i));
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supply_register (i, buf);
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}
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else
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supply_register (i, REG_ADDR (gregsetp, i));
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}
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}
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/* Fill register REGNO (if it is a general-purpose register) in
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*GREGSETPS with the value in GDB's register array. If REGNO is -1,
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do this for all registers. */
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void
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fill_gregset (gregset_t *gregsetp, int regno)
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{
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int i;
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for (i = 0; i < NUM_GREGS; i++)
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if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i))
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memcpy (REG_ADDR (gregsetp, i), ®isters[REGISTER_BYTE (regno)],
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REGISTER_RAW_SIZE (i));
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}
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#include "i387-nat.h"
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/* Fill GDB's register array with the floating-point register values
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in *FPREGSETP. */
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void
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supply_fpregset (fpregset_t *fpregsetp)
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{
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i387_supply_fsave ((char *) fpregsetp);
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}
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|
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/* Fill register REGNO (if it is a floating-point register) in
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*FPREGSETP with the value in GDB's register array. If REGNO is -1,
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do this for all registers. */
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|
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void
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fill_fpregset (fpregset_t *fpregsetp, int regno)
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{
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i387_fill_fsave ((char *) fpregsetp, regno);
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}
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/* Fetch register REGNO from the inferior. If REGNO is -1, do this
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for all registers (including the floating point registers). */
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void
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fetch_inferior_registers (int regno)
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{
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gregset_t gregs;
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||||
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if (ptrace (PT_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
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perror_with_name ("Couldn't get registers");
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||||
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supply_gregset (&gregs);
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||||
|
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if (regno == -1 || regno >= FP0_REGNUM)
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||||
{
|
||||
fpregset_t fpregs;
|
||||
|
||||
if (ptrace (PT_GETFPREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
|
||||
perror_with_name ("Couldn't get floating point status");
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||||
|
||||
supply_fpregset (&fpregs);
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||||
}
|
||||
}
|
||||
|
||||
/* Store register REGNO back into the inferior. If REGNO is -1, do
|
||||
this for all registers (including the floating point registers). */
|
||||
|
||||
void
|
||||
store_inferior_registers (int regno)
|
||||
{
|
||||
gregset_t gregs;
|
||||
|
||||
if (ptrace (PT_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
|
||||
perror_with_name ("Couldn't get registers");
|
||||
|
||||
fill_gregset (&gregs, regno);
|
||||
|
||||
if (ptrace (PT_SETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &gregs, 0) == -1)
|
||||
perror_with_name ("Couldn't write registers");
|
||||
|
||||
if (regno == -1 || regno >= FP0_REGNUM)
|
||||
{
|
||||
fpregset_t fpregs;
|
||||
|
||||
if (ptrace (PT_GETFPREGS, inferior_pid,
|
||||
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
|
||||
perror_with_name ("Couldn't get floating point status");
|
||||
|
||||
fill_fpregset (&fpregs, regno);
|
||||
|
||||
if (ptrace (PT_SETFPREGS, inferior_pid,
|
||||
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
|
||||
perror_with_name ("Couldn't write floating point status");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Support for the user struct. */
|
||||
|
||||
/* Return the address register REGNO. BLOCKEND is the value of
|
||||
u.u_ar0, which should point to the registers. */
|
||||
|
||||
CORE_ADDR
|
||||
register_u_addr (CORE_ADDR blockend, int regno)
|
||||
{
|
||||
return (CORE_ADDR) REG_ADDR (blockend, regno);
|
||||
}
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/user.h>
|
||||
|
||||
/* Return the size of the user struct. */
|
||||
|
||||
int
|
||||
kernel_u_size (void)
|
||||
{
|
||||
return (sizeof (struct user));
|
||||
}
|
||||
Loading…
Reference in New Issue