* 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.
+2000-05-25 Mark Kettenis <kettenis@gnu.org>
+
+ 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.
+
2000-05-24 Michael Snyder <msnyder@seadog.cygnus.com>
* findvar.c (value_from_register): Factor code, simplify logic.
# Host: Intel 386 running FreeBSD
XDEPFILES= ser-tcp.o
-NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o core-aout.o i386b-nat.o
-XM_FILE= xm-i386bsd.h
+NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o \
+ corelow.o core-aout.o core-regset.o i387-nat.o i386bsd-nat.o
+XM_FILE= xm-fbsd.h
NAT_FILE= nm-fbsd.h
# Target: Intel 386 running FreeBSD
-TDEPFILES= i386-tdep.o i387-tdep.o solib.o
+TDEPFILES= i386-tdep.o i387-tdep.o
TM_FILE= tm-fbsd.h
-/* Native-dependent definitions for Intel 386 running BSD Unix, for GDB.
- Copyright 1986, 1987, 1989, 1992, 1996 Free Software Foundation, Inc.
+/* Native-dependent definitions for FreeBSD/i386.
+ Copyright (C) 1986, 87, 89, 92, 96, 2000 Free Software Foundation, Inc.
This file is part of GDB.
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#ifndef NM_FREEBSD_H
-#define NM_FREEBSD_H
+#ifndef NM_FBSD_H
+#define NM_FBSD_H
-/* Be shared lib aware */
-#include "solib.h"
+/* Type of the third argument to the `ptrace' system call. */
+#define PTRACE_ARG3_TYPE caddr_t
+
+/* Override copies of {fetch,store}_inferior_registers in `infptrace.c'. */
+#define FETCH_INFERIOR_REGISTERS
+
+/* We can attach and detach. */
+#define ATTACH_DETACH
+\f
+
+/* Support for the user struct. */
+
+/* Return the size of the user struct. */
+
+#define KERNEL_U_SIZE kernel_u_size ()
+extern int kernel_u_size (void);
/* This is the amount to subtract from u.u_ar0
to get the offset in the core file of the register values. */
#define KERNEL_U_ADDR USRSTACK
#define REGISTER_U_ADDR(addr, blockend, regno) \
- (addr) = i386_register_u_addr ((blockend),(regno));
+ (addr) = register_u_addr ((blockend), (regno))
+extern CORE_ADDR register_u_addr (CORE_ADDR blockend, int regno);
+\f
-extern int
-i386_register_u_addr PARAMS ((int, int));
+/* Shared library support. */
-#define PTRACE_ARG3_TYPE char*
+/* The FreeBSD <link.h> uses the same condition to distinguish ELF
+ from a.out. ELF implies SVR4 shared libraries. */
+#if (defined (FREEBSD_ELF) || defined (__ELF__)) && !defined (FREEBSD_AOUT)
+#define SVR4_SHARED_LIBS
+#endif
+
+#include "solib.h" /* Support for shared libraries. */
+#ifdef SVR4_SHARED_LIBS
+#include "elf/common.h" /* Additional ELF shared library info. */
+#endif
+
+#ifndef SVR4_SHARED_LIBS
+
+/* Make structure definitions match up with those expected in `solib.c'. */
-/* make structure definitions match up with those expected in solib.c */
#define link_object sod
#define lo_name sod_name
#define lo_library sod_library
#define ld_un d_un
#define ld_2 d_sdt
-/* Return sizeof user struct to callers in less machine dependent routines */
-
-#define KERNEL_U_SIZE kernel_u_size()
-extern int kernel_u_size PARAMS ((void));
+#endif /* !SVR4_SHARED_LIBS */
-#endif /* NM_FREEBSD_H */
+#endif /* NM_FBSD_H */
-/* Target macro definitions for i386 running FreeBSD
- Copyright (C) 1997 Free Software Foundation, Inc.
+/* Target-dependent definitions for FreeBSD/i386.
+ Copyright (C) 1997, 2000 Free Software Foundation, Inc.
This file is part of GDB.
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#include "i386/tm-i386bsd.h"
+#ifndef TM_FBSD_H
+#define TM_FBSD_H
+#define HAVE_I387_REGS
+#include "i386/tm-i386.h"
-#undef NUM_REGS
-#define NUM_REGS 14
+/* FreeBSD uses the old gcc convention for struct returns. */
+#define USE_STRUCT_CONVENTION(gcc_p, type) \
+ generic_use_struct_convention (1, type)
+\f
-#undef IN_SOLIB_CALL_TRAMPOLINE
-#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) STREQ (name, "_DYNAMIC")
+/* Support for longjmp. */
+/* Details about jmp_buf. It's supposed to be an array of integers. */
-extern i386_float_info ();
-#define FLOAT_INFO i386_float_info ()
+#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
+#define JB_PC 0 /* Array index of saved PC. */
+
+/* Figure out where the longjmp will land. Store the address that
+ longjmp will jump to in *ADDR, and return non-zero if successful. */
+
+extern int get_longjmp_target (CORE_ADDR *addr);
+#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
+\f
+
+/* Support for signal handlers. */
+
+/* The sigtramp is above the user stack and immediately below
+ the user area. Using constants here allows for cross debugging.
+ These are tested for FreeBSD 3.4. */
+
+#define SIGTRAMP_START(pc) 0xbfbfdf20
+#define SIGTRAMP_END(pc) 0xbfbfdff0
+
+/* Offset to saved PC in sigcontext, from <sys/signal.h>. */
+#define SIGCONTEXT_PC_OFFSET 20
+\f
+
+/* Shared library support. */
+
+#ifndef SVR4_SHARED_LIBS
+
+/* Return non-zero if we are in a shared library trampoline code stub. */
+
+#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
+ (name && !strcmp(name, "_DYNAMIC"))
+
+#endif /* !SVR4_SHARED_LIBS */
+
+#endif /* TM_FBSD_H */
--- /dev/null
+/* Host-dependent definitions for FreeBSD/i386.
+ Copyright (C) 2000 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef XM_FBSD_H
+#define XM_FBSD_H
+
+#define HOST_BYTE_ORDER LITTLE_ENDIAN
+
+#define HOST_LONG_DOUBLE_FORMAT &floatformat_i387_ext
+
+#endif /* XM_FBSD_H */
--- /dev/null
+/* Native-dependent code for modern i386 BSD's.
+ Copyright (C) 2000 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "inferior.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+#include <machine/frame.h>
+
+#ifdef HAVE_SYS_PROCFS_H
+#include <sys/procfs.h>
+#endif
+
+#ifndef HAVE_GREGSET_T
+typedef struct reg gregset_t;
+#endif
+
+#ifndef HAVE_FPREGSET_T
+typedef struct fpreg fpregset_t;
+#endif
+
+/* In older BSD versions we cannot get at some of the segment
+ registers. FreeBSD for example didn't support the %fs and %gs
+ registers until the 3.0 release. We have autoconf checks for their
+ presence, and deal gracefully with their absence. */
+
+/* Registers we shouldn't try to fetch. */
+#if !defined (CANNOT_FETCH_REGISTER)
+#define CANNOT_FETCH_REGISTER(regno) cannot_fetch_register (regno)
+#endif
+
+/* Registers we shouldn't try to store. */
+#if !defined (CANNOT_STORE_REGISTER)
+#define CANNOT_STORE_REGISTER(regno) CANNOT_FETCH_REGISTER (regno)
+#endif
+
+/* Offset to the gregset_t location where REG is stored. */
+#define REG_OFFSET(reg) offsetof (gregset_t, reg)
+
+/* At reg_offset[REGNO] you'll find the offset to the gregset_t
+ location where the GDB register REGNO is stored. Unsupported
+ registers are marked with `-1'. */
+static int reg_offset[] =
+{
+ REG_OFFSET (r_eax),
+ REG_OFFSET (r_ecx),
+ REG_OFFSET (r_edx),
+ REG_OFFSET (r_edx),
+ REG_OFFSET (r_esp),
+ REG_OFFSET (r_ebp),
+ REG_OFFSET (r_esi),
+ REG_OFFSET (r_edi),
+ REG_OFFSET (r_eip),
+ REG_OFFSET (r_eflags),
+ REG_OFFSET (r_cs),
+ REG_OFFSET (r_ss),
+ REG_OFFSET (r_ds),
+ REG_OFFSET (r_es),
+#ifdef HAVE_R_FS
+ REG_OFFSET (r_fs),
+#else
+ -1,
+#endif
+#ifdef HAVE_R_GS
+ REG_OFFSET (r_gs)
+#else
+ -1
+#endif
+};
+
+#define REG_ADDR(regset, regno) ((char *) (regset) + reg_offset[regno])
+
+/* Return nonzero if we shouldn't try to fetch register REGNO. */
+
+static int
+cannot_fetch_register (int regno)
+{
+ return (reg_offset[regno] == -1);
+}
+\f
+
+/* Transfering the registers between GDB, inferiors and core files. */
+
+/* Fill GDB's register array with the genereal-purpose register values
+ in *GREGSETP. */
+
+void
+supply_gregset (gregset_t *gregsetp)
+{
+ char buf[MAX_REGISTER_RAW_SIZE];
+ int i;
+
+ for (i = 0; i < NUM_GREGS; i++)
+ {
+ if (CANNOT_FETCH_REGISTER (i))
+ {
+ memset (buf, 0, REGISTER_RAW_SIZE (i));
+ supply_register (i, buf);
+ }
+ else
+ supply_register (i, REG_ADDR (gregsetp, i));
+ }
+}
+
+/* Fill register REGNO (if it is a general-purpose register) in
+ *GREGSETPS with the value in GDB's register array. If REGNO is -1,
+ do this for all registers. */
+
+void
+fill_gregset (gregset_t *gregsetp, int regno)
+{
+ int i;
+
+ for (i = 0; i < NUM_GREGS; i++)
+ if ((regno == -1 || regno == i) && ! CANNOT_STORE_REGISTER (i))
+ memcpy (REG_ADDR (gregsetp, i), ®isters[REGISTER_BYTE (regno)],
+ REGISTER_RAW_SIZE (i));
+}
+
+#include "i387-nat.h"
+
+/* Fill GDB's register array with the floating-point register values
+ in *FPREGSETP. */
+
+void
+supply_fpregset (fpregset_t *fpregsetp)
+{
+ i387_supply_fsave ((char *) fpregsetp);
+}
+
+/* Fill register REGNO (if it is a floating-point register) in
+ *FPREGSETP with the value in GDB's register array. If REGNO is -1,
+ do this for all registers. */
+
+void
+fill_fpregset (fpregset_t *fpregsetp, int regno)
+{
+ i387_fill_fsave ((char *) fpregsetp, regno);
+}
+
+/* Fetch register REGNO from the inferior. If REGNO is -1, do this
+ for all registers (including the floating point registers). */
+
+void
+fetch_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");
+
+ supply_gregset (&gregs);
+
+ 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");
+
+ supply_fpregset (&fpregs);
+ }
+}
+
+/* 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");
+ }
+}
+\f
+
+/* 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));
+}
projects / external / binutils.git / commitdiff