svn commit: r204174 - in head/contrib/gdb/gdb: . config/mips
Randall Stewart
rrs at FreeBSD.org
Sun Feb 21 17:25:01 UTC 2010
Author: rrs
Date: Sun Feb 21 17:25:00 2010
New Revision: 204174
URL: http://svn.freebsd.org/changeset/base/204174
Log:
Adds the missing mips gdb files that I
foobar'd on my last commit.. Sorry about
that JC.. my fault.
Obtained from: JC
Added:
head/contrib/gdb/gdb/config/mips/nm-fbsd.h
head/contrib/gdb/gdb/config/mips/tm-fbsd.h
head/contrib/gdb/gdb/mipsfbsd-nat.c
head/contrib/gdb/gdb/mipsfbsd-tdep.c
head/contrib/gdb/gdb/mipsfbsd-tdep.h
Added: head/contrib/gdb/gdb/config/mips/nm-fbsd.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/contrib/gdb/gdb/config/mips/nm-fbsd.h Sun Feb 21 17:25:00 2010 (r204174)
@@ -0,0 +1,48 @@
+/***********************************************************************
+Copyright 2003-2006 Raza Microelectronics, Inc.(RMI).
+This is a derived work from software originally provided by the external
+entity identified below. The licensing terms and warranties specified in
+the header of the original work apply to this derived work.
+Contribution by RMI:
+*****************************#RMI_1#**********************************/
+/* Native-dependent definitions for NetBSD/mips.
+ Copyright 2002 Free Software Foundation, Inc.
+ Contributed by Wasabi Systems, 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 NM_FBSD_H
+#define NM_FBSD_H
+
+/* Override child_pid_to_exec_file in 'inftarg.c'. */
+#define CHILD_PID_TO_EXEC_FILE
+
+/* 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
+
+/* Shared library support. */
+
+#include "solib.h"
+
+#endif /* NM_FBSD_H */
Added: head/contrib/gdb/gdb/config/mips/tm-fbsd.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/contrib/gdb/gdb/config/mips/tm-fbsd.h Sun Feb 21 17:25:00 2010 (r204174)
@@ -0,0 +1,43 @@
+/***********************************************************************
+Copyright 2003-2006 Raza Microelectronics, Inc.(RMI).
+This is a derived work from software originally provided by the external
+entity identified below. The licensing terms and warranties specified in
+the header of the original work apply to this derived work.
+Contribution by RMI:
+*****************************#RMI_1#**********************************/
+/* Target-dependent definitions for NetBSD/mips.
+ Copyright 2002 Free Software Foundation, Inc.
+ Contributed by Wasabi Systems, 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 TM_FBSD_H
+#define TM_FBSD_H
+
+#include "mips/tm-mips.h"
+#include "solib.h"
+
+/* We don't want to inherit tm-mips.h's shared library trampoline code. */
+#undef IN_SOLIB_CALL_TRAMPOLINE
+#undef IN_SOLIB_RETURN_TRAMPOLINE
+#undef SKIP_TRAMPOLINE_CODE
+#undef IGNORE_HELPER_CALL
+
+/* XXX undef a bunch of stuff we want to use multi-arch */
+#undef IN_SIGTRAMP
+#endif /* TM_FBSD_H */
Added: head/contrib/gdb/gdb/mipsfbsd-nat.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/contrib/gdb/gdb/mipsfbsd-nat.c Sun Feb 21 17:25:00 2010 (r204174)
@@ -0,0 +1,108 @@
+/***********************************************************************
+Copyright 2003-2006 Raza Microelectronics, Inc.(RMI).
+This is a derived work from software originally provided by the external
+entity identified below. The licensing terms and warranties specified in
+the header of the original work apply to this derived work.
+Contribution by RMI:
+*****************************#RMI_1#**********************************/
+/* Native-dependent code for MIPS systems running NetBSD.
+ Copyright 2000, 2001, 2002 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 "regcache.h"
+
+#include "mipsfbsd-tdep.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+/* Determine if PT_GETREGS fetches this register. */
+static int
+getregs_supplies (int regno)
+{
+ return ((regno) >= ZERO_REGNUM && (regno) <= PC_REGNUM);
+}
+
+void
+fetch_inferior_registers (int regno)
+{
+ if (regno == -1 || getregs_supplies (regno))
+ {
+ struct reg regs;
+
+ if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) ®s, 0) == -1)
+ perror_with_name ("Couldn't get registers");
+
+ mipsfbsd_supply_reg ((char *) ®s, regno);
+ if (regno != -1)
+ return;
+ }
+
+ if (regno == -1 || regno >= FP0_REGNUM)
+ {
+ struct fpreg fpregs;
+
+ if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't get floating point status");
+
+ mipsfbsd_supply_fpreg ((char *) &fpregs, regno);
+ }
+}
+
+void
+store_inferior_registers (int regno)
+{
+ if (regno == -1 || getregs_supplies (regno))
+ {
+ struct reg regs;
+
+ if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) ®s, 0) == -1)
+ perror_with_name ("Couldn't get registers");
+
+ mipsfbsd_fill_reg ((char *) ®s, regno);
+
+ if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) ®s, 0) == -1)
+ perror_with_name ("Couldn't write registers");
+
+ if (regno != -1)
+ return;
+ }
+
+ if (regno == -1 || regno >= FP0_REGNUM)
+ {
+ struct fpreg fpregs;
+
+ if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't get floating point status");
+
+ mipsfbsd_fill_fpreg ((char *) &fpregs, regno);
+
+ if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't write floating point status");
+ }
+}
Added: head/contrib/gdb/gdb/mipsfbsd-tdep.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/contrib/gdb/gdb/mipsfbsd-tdep.c Sun Feb 21 17:25:00 2010 (r204174)
@@ -0,0 +1,579 @@
+/***********************************************************************
+Copyright 2003-2006 Raza Microelectronics, Inc.(RMI).
+This is a derived work from software originally provided by the external
+entity identified below. The licensing terms and warranties specified in
+the header of the original work apply to this derived work.
+Contribution by RMI:
+*****************************#RMI_1#**********************************/
+/* Target-dependent code for MIPS systems running NetBSD.
+ Copyright 2002, 2003 Free Software Foundation, Inc.
+ Contributed by Wasabi Systems, 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 "gdbcore.h"
+#include "regcache.h"
+#include "target.h"
+#include "value.h"
+#include "osabi.h"
+
+#include "nbsd-tdep.h"
+#include "mipsfbsd-tdep.h"
+#include "mips-tdep.h"
+
+#include "solib-svr4.h"
+
+#include <sys/procfs.h>
+#include "gregset.h"
+#include "trad-frame.h"
+#include "frame.h"
+#include "frame-unwind.h"
+#include "bfd.h"
+#include "objfiles.h"
+
+/* Conveniently, GDB uses the same register numbering as the
+ ptrace register structure used by NetBSD/mips. */
+
+void
+mipsfbsd_supply_reg (char *regs, int regno)
+{
+ int i;
+
+ for (i = 0; i <= PC_REGNUM; i++)
+ {
+ if (regno == i || regno == -1)
+ {
+ if (CANNOT_FETCH_REGISTER (i))
+ supply_register (i, NULL);
+ else
+ supply_register (i, regs + (i * mips_regsize (current_gdbarch)));
+ }
+ }
+}
+void
+supply_gregset (gdb_gregset_t *gregs)
+{
+ mipsfbsd_supply_reg((char *)gregs, -1);
+}
+
+void
+mipsfbsd_fill_reg (char *regs, int regno)
+{
+ int i;
+
+ for (i = 0; i <= PC_REGNUM; i++)
+ if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))
+ regcache_collect (i, regs + (i * mips_regsize (current_gdbarch)));
+}
+
+void
+fill_gregset (gdb_gregset_t *gregs, int regno)
+{
+ mipsfbsd_fill_reg ((char *)gregs, regno);
+}
+
+void
+mipsfbsd_supply_fpreg (char *fpregs, int regno)
+{
+ int i;
+
+ for (i = FP0_REGNUM;
+ i <= mips_regnum (current_gdbarch)->fp_implementation_revision;
+ i++)
+ {
+ if (regno == i || regno == -1)
+ {
+ if (CANNOT_FETCH_REGISTER (i))
+ supply_register (i, NULL);
+ else
+ supply_register (i,
+ fpregs + ((i - FP0_REGNUM) * mips_regsize (current_gdbarch)));
+ }
+ }
+}
+
+void
+supply_fpregset (gdb_fpregset_t *fpregs)
+{
+ mipsfbsd_supply_fpreg((char *)fpregs, -1);
+}
+
+void
+mipsfbsd_fill_fpreg (char *fpregs, int regno)
+{
+ int i;
+
+ for (i = FP0_REGNUM; i <= mips_regnum (current_gdbarch)->fp_control_status;
+ i++)
+ if ((regno == i || regno == -1) && ! CANNOT_STORE_REGISTER (i))
+ regcache_collect (i,
+ fpregs + ((i - FP0_REGNUM) * mips_regsize (current_gdbarch)));
+}
+
+void
+fill_fpregset (gdb_fpregset_t *fpregs, int regno)
+{
+ mipsfbsd_fill_fpreg ((char *)fpregs, regno);
+}
+
+static void
+fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
+ CORE_ADDR ignore)
+{
+ char *regs, *fpregs;
+
+ /* We get everything from one section. */
+ if (which != 0)
+ return;
+
+ regs = core_reg_sect;
+ fpregs = core_reg_sect + SIZEOF_STRUCT_REG;
+
+ /* Integer registers. */
+ mipsfbsd_supply_reg (regs, -1);
+
+ /* Floating point registers. */
+ mipsfbsd_supply_fpreg (fpregs, -1);
+}
+
+static void
+fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
+ CORE_ADDR ignore)
+{
+ switch (which)
+ {
+ case 0: /* Integer registers. */
+ if (core_reg_size != SIZEOF_STRUCT_REG)
+ warning ("Wrong size register set in core file.");
+ else
+ mipsfbsd_supply_reg (core_reg_sect, -1);
+ break;
+
+ case 2: /* Floating point registers. */
+ if (core_reg_size != SIZEOF_STRUCT_FPREG)
+ warning ("Wrong size register set in core file.");
+ else
+ mipsfbsd_supply_fpreg (core_reg_sect, -1);
+ break;
+
+ default:
+ /* Don't know what kind of register request this is; just ignore it. */
+ break;
+ }
+}
+
+static struct core_fns mipsfbsd_core_fns =
+{
+ bfd_target_unknown_flavour, /* core_flavour */
+ default_check_format, /* check_format */
+ default_core_sniffer, /* core_sniffer */
+ fetch_core_registers, /* core_read_registers */
+ NULL /* next */
+};
+
+
+/*
+ * MIPSFBSD Offsets
+ * 0x7fff0000 User high mem -> USRSTACK [64K]
+ *
+ * 0x7ffefff0 ps_strings -> 16 bytes
+ *
+ * 0x7ffeffec sigcode -> 44 bytes
+ *
+ * 0x7ffeffc4 sigcode end env strings etc start
+ */
+#define MIPS_FBSD_SIGTRAMP_START (0x7ffeffc4)
+#define MIPS_FBSD_SIGTRAMP_END (0x7ffeffec)
+#define MIPS_FBSD_SIGTRAMP_STACK_MOD_START (0x7ffeffc8)
+#define MIPS_FBSD_SIGTRAMP_STACK_MOD_END (0x7ffeffd8)
+
+static LONGEST
+mipsfbsd_sigtramp_offset (CORE_ADDR pc)
+{
+ return pc < MIPS_FBSD_SIGTRAMP_END &&
+ pc >= MIPS_FBSD_SIGTRAMP_START ? 1 : -1;
+}
+
+static int
+fbsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
+{
+ return (name && strcmp (name, "__sigtramp") == 0);
+}
+
+static int
+mipsfbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
+{
+ return (fbsd_pc_in_sigtramp (pc, func_name)
+ || mipsfbsd_sigtramp_offset (pc) >= 0);
+}
+
+static int
+is_sigtramp_sp_modified (CORE_ADDR pc)
+{
+ return (pc >= MIPS_FBSD_SIGTRAMP_STACK_MOD_START &&
+ pc <= MIPS_FBSD_SIGTRAMP_STACK_MOD_END);
+}
+
+
+/* Figure out where the longjmp will land. We expect that we have
+ just entered longjmp and haven't yet setup the stack frame, so
+ the args are still in the argument regs. A0_REGNUM points at the
+ jmp_buf structure from which we extract the PC that we will land
+ at. The PC is copied into *pc. This routine returns true on
+ success. */
+
+#define FBSD_MIPS_JB_PC (12)
+#define FBSD_MIPS_JB_ELEMENT_SIZE mips_regsize (current_gdbarch)
+#define FBSD_MIPS_JB_OFFSET (FBSD_MIPS_JB_PC * \
+ FBSD_MIPS_JB_ELEMENT_SIZE)
+
+static int
+mipsfbsd_get_longjmp_target (CORE_ADDR *pc)
+{
+ CORE_ADDR jb_addr;
+ char *buf;
+
+ buf = alloca (FBSD_MIPS_JB_ELEMENT_SIZE);
+
+ jb_addr = read_register (A0_REGNUM);
+
+ if (target_read_memory (jb_addr + FBSD_MIPS_JB_OFFSET, buf,
+ FBSD_MIPS_JB_ELEMENT_SIZE))
+ return 0;
+
+ *pc = extract_unsigned_integer (buf, FBSD_MIPS_JB_ELEMENT_SIZE);
+
+ return 1;
+}
+
+static int
+mipsfbsd_cannot_fetch_register (int regno)
+{
+ return (regno == ZERO_REGNUM
+ || regno == mips_regnum (current_gdbarch)->fp_implementation_revision);
+ /* XXX TODO: Are there other registers that we cannot fetch ? */
+}
+
+static int
+mipsfbsd_cannot_store_register (int regno)
+{
+ return (regno == ZERO_REGNUM
+ || regno == mips_regnum (current_gdbarch)->fp_implementation_revision);
+ /* XXX TODO: Are there other registers that we cannot write ? */
+}
+
+/*
+ * This structure is defined in mips-tdep.c.
+ */
+struct mips_frame_cache
+{
+ CORE_ADDR base;
+ struct trad_frame_saved_reg *saved_regs;
+};
+
+/*
+ * Prologue cache for sigtramp frame
+ * When we land in sigtramp, sigcontext is saved on the
+ * stack just below the sigtramp's stack frame. We have
+ * the Registers saved at fixed offsets on the stack.
+ */
+
+#define MIPS_FBSD_SIGTRAMP_STACK_SIZE (48)
+#define MIPS_FBSD_SIGCONTEXT_REG_OFFSET (32)
+
+static struct mips_frame_cache *
+mipsfbsd_sigtramp_frame_cache (struct frame_info *next_frame,
+ void **this_cache)
+{
+ struct mips_frame_cache *cache;
+ CORE_ADDR gregs_addr, sp, pc;
+ int regnum;
+ int sigtramp_stack_size;
+
+ if (*this_cache)
+ return *this_cache;
+
+ cache = FRAME_OBSTACK_ZALLOC (struct mips_frame_cache);
+ *this_cache = cache;
+
+ cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
+
+ /*
+ * Get sp of next frame which is the adjusted sp of
+ * tramp code.
+ */
+ sp = frame_unwind_register_unsigned(next_frame, NUM_REGS + SP_REGNUM);
+ pc = frame_unwind_register_unsigned(next_frame, NUM_REGS + PC_REGNUM);
+ sigtramp_stack_size = is_sigtramp_sp_modified(pc) ?
+ MIPS_FBSD_SIGTRAMP_STACK_SIZE : 0;
+ gregs_addr = sp + sigtramp_stack_size + MIPS_FBSD_SIGCONTEXT_REG_OFFSET;
+
+ for (regnum = 0; regnum < PC_REGNUM; regnum++) {
+ cache->saved_regs[NUM_REGS + regnum].addr = gregs_addr +
+ regnum * mips_regsize (current_gdbarch);
+ }
+ /* Only retrieve PC and SP */
+ cache->saved_regs[NUM_REGS + SP_REGNUM].addr = gregs_addr +
+ SP_REGNUM * ( mips_regsize (current_gdbarch));
+
+ cache->saved_regs[NUM_REGS + RA_REGNUM].addr = gregs_addr +
+ RA_REGNUM * ( mips_regsize (current_gdbarch));
+
+ cache->base = get_frame_memory_unsigned (next_frame,
+ cache->saved_regs[NUM_REGS + SP_REGNUM].addr,
+ mips_regsize (current_gdbarch));
+
+ /* Todo: Floating point registers */
+
+ cache->saved_regs[NUM_REGS + mips_regnum (current_gdbarch)->pc]
+ = cache->saved_regs[NUM_REGS + RA_REGNUM];
+
+ return *this_cache;
+}
+
+static void
+mipsfbsd_sigtramp_frame_this_id (struct frame_info *next_frame,
+ void **this_cache,
+ struct frame_id *this_id)
+{
+ struct mips_frame_cache *cache =
+ mipsfbsd_sigtramp_frame_cache (next_frame, this_cache);
+
+ (*this_id) = frame_id_build (cache->base,
+ cache->saved_regs[NUM_REGS + mips_regnum (current_gdbarch)->pc].addr);
+}
+
+static void
+mipsfbsd_sigtramp_frame_prev_register (struct frame_info *next_frame,
+ void **this_cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp,
+ CORE_ADDR *addrp,
+ int *realnump, void *valuep)
+{
+ struct mips_frame_cache *cache =
+ mipsfbsd_sigtramp_frame_cache (next_frame, this_cache);
+
+ trad_frame_prev_register (next_frame, cache->saved_regs, regnum,
+ optimizedp, lvalp, addrp, realnump, valuep);
+}
+
+
+static const struct frame_unwind mipsfbsd_sigtramp_frame_unwind =
+{
+ SIGTRAMP_FRAME,
+ mipsfbsd_sigtramp_frame_this_id,
+ mipsfbsd_sigtramp_frame_prev_register
+};
+
+static const struct frame_unwind *
+mipsfbsd_sigtramp_frame_sniffer (struct frame_info *next_frame)
+{
+ CORE_ADDR pc = frame_pc_unwind (next_frame);
+ char *name;
+
+ find_pc_partial_function (pc, &name, NULL, NULL);
+ if (mipsfbsd_pc_in_sigtramp (pc, name) )
+ return &mipsfbsd_sigtramp_frame_unwind;
+
+ return NULL;
+}
+
+/*
+ * Find out if PC has landed into dynamic library stub.
+ * We can find it by seeing if the name of the object
+ * file section where the PC lies is "MIPS.stubs"
+ */
+
+int
+mipsfbsd_in_stub_section (CORE_ADDR pc, char *name)
+{
+ struct obj_section *s;
+ int retval = 0;
+
+ s = find_pc_section (pc);
+
+ retval = (s != NULL
+ && s->the_bfd_section->name != NULL
+ && strcmp (s->the_bfd_section->name, ".MIPS.stubs") == 0);
+ return (retval);
+}
+
+
+/*
+ * Prologue cache for dynamic library stub frame.
+ * This stub does not modify the SP, so we set the
+ * cache base to calling frame's SP
+ */
+static struct mips_frame_cache *
+mipsfbsd_stub_frame_cache (struct frame_info *next_frame,
+ void **this_cache)
+{
+ struct mips_frame_cache *cache;
+
+ if (*this_cache)
+ return *this_cache;
+
+ cache = FRAME_OBSTACK_ZALLOC (struct mips_frame_cache);
+ *this_cache = cache;
+
+ cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
+
+
+ cache->saved_regs[NUM_REGS + mips_regnum (current_gdbarch)->pc].realreg =
+ NUM_REGS + RA_REGNUM;
+ cache->base = frame_unwind_register_unsigned (next_frame,
+ NUM_REGS + SP_REGNUM);
+
+ return (*this_cache);
+}
+
+
+static void
+mipsfbsd_stub_frame_this_id (struct frame_info *next_frame,
+ void **this_cache,
+ struct frame_id *this_id)
+{
+ struct mips_frame_cache *cache =
+ mipsfbsd_stub_frame_cache (next_frame, this_cache);
+
+ (*this_id) = frame_id_build (cache->base,
+ cache->saved_regs[NUM_REGS + mips_regnum (current_gdbarch)->pc].addr);
+}
+
+static void
+mipsfbsd_stub_frame_prev_register (struct frame_info *next_frame,
+ void **this_cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *valuep)
+{
+ struct mips_frame_cache *cache =
+ mipsfbsd_stub_frame_cache (next_frame, this_cache);
+
+ trad_frame_prev_register (next_frame, cache->saved_regs, regnum,
+ optimizedp, lvalp, addrp, realnump, valuep);
+}
+
+
+
+static const struct frame_unwind mipsfbsd_stub_frame_unwind = {
+ NORMAL_FRAME,
+ mipsfbsd_stub_frame_this_id,
+ mipsfbsd_stub_frame_prev_register
+};
+
+static const struct frame_unwind *
+mipsfbsd_stub_frame_sniffer (struct frame_info *next_frame)
+{
+ CORE_ADDR pc = frame_pc_unwind (next_frame);
+
+ if (mipsfbsd_in_stub_section(pc, NULL))
+ return &mipsfbsd_stub_frame_unwind;
+
+ return NULL;
+}
+
+/*
+ * typedef struct link_map {
+ * caddr_t l_addr; /* Base Address of library
+ * #ifdef __mips__
+ * caddr_t l_offs; /* Load Offset of library
+ * #endif
+ * const char *l_name; /* Absolute Path to Library
+ * const void *l_ld; /* Pointer to .dynamic in memory
+ * struct link_map *l_next, *l_prev; /* linked list of of mapped libs
+ * } Link_map;
+ *
+ * struct r_debug {
+ * int r_version; /* not used
+ * struct link_map *r_map; /* list of loaded images
+ * void (*r_brk)(struct r_debug *, struct link_map *);
+ * /* pointer to break point
+ * enum {
+ * RT_CONSISTENT, /* things are stable
+ * RT_ADD, /* adding a shared library
+ * RT_DELETE /* removing a shared library
+ * } r_state;
+ * };
+ *
+ */
+
+static struct link_map_offsets *
+mipsfbsd_ilp32_solib_svr4_fetch_link_map_offsets (void)
+{
+ static struct link_map_offsets lmo;
+ static struct link_map_offsets *lmp = NULL;
+
+ if (lmp == NULL)
+ {
+ lmp = &lmo;
+
+ lmo.r_debug_size = 16;
+
+ lmo.r_map_offset = 4;
+ lmo.r_map_size = 4;
+
+ lmo.link_map_size = 24;
+
+ lmo.l_addr_offset = 0;
+ lmo.l_addr_size = 4;
+
+ lmo.l_name_offset = 8;
+ lmo.l_name_size = 4;
+
+ lmo.l_next_offset = 16;
+ lmo.l_next_size = 4;
+
+ lmo.l_prev_offset = 20;
+ lmo.l_prev_size = 4;
+ }
+
+ return lmp;
+}
+
+static void
+mipsfbsd_init_abi (struct gdbarch_info info,
+ struct gdbarch *gdbarch)
+{
+ set_gdbarch_pc_in_sigtramp (gdbarch, mipsfbsd_pc_in_sigtramp);
+
+ set_gdbarch_get_longjmp_target (gdbarch, mipsfbsd_get_longjmp_target);
+
+ set_gdbarch_cannot_fetch_register (gdbarch, mipsfbsd_cannot_fetch_register);
+ set_gdbarch_cannot_store_register (gdbarch, mipsfbsd_cannot_store_register);
+
+ set_gdbarch_software_single_step (gdbarch, mips_software_single_step);
+ set_solib_svr4_fetch_link_map_offsets (gdbarch,
+ mipsfbsd_ilp32_solib_svr4_fetch_link_map_offsets);
+ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+ set_gdbarch_in_solib_call_trampoline (gdbarch, mipsfbsd_in_stub_section);
+
+ /* frame sniffers */
+ frame_unwind_append_sniffer (gdbarch, mipsfbsd_sigtramp_frame_sniffer);
+ frame_unwind_append_sniffer (gdbarch, mipsfbsd_stub_frame_sniffer);
+
+}
+
+void
+_initialize_mipsfbsd_tdep (void)
+{
+ gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_FREEBSD_ELF,
+ mipsfbsd_init_abi);
+}
Added: head/contrib/gdb/gdb/mipsfbsd-tdep.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/contrib/gdb/gdb/mipsfbsd-tdep.h Sun Feb 21 17:25:00 2010 (r204174)
@@ -0,0 +1,40 @@
+/***********************************************************************
+Copyright 2003-2006 Raza Microelectronics, Inc.(RMI).
+This is a derived work from software originally provided by the external
+entity identified below. The licensing terms and warranties specified in
+the header of the original work apply to this derived work.
+Contribution by RMI:
+*****************************#RMI_1#**********************************/
+/* Common target dependent code for GDB on MIPS systems running NetBSD.
+ Copyright 2002 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 mipsfbsd_TDEP_H
+#define mipsfbsd_TDEP_H
+
+void mipsfbsd_supply_reg (char *, int);
+void mipsfbsd_fill_reg (char *, int);
+
+void mipsfbsd_supply_fpreg (char *, int);
+void mipsfbsd_fill_fpreg (char *, int);
+
+#define SIZEOF_STRUCT_REG (38 * mips_regsize (current_gdbarch))
+#define SIZEOF_STRUCT_FPREG (33 * mips_regsize (current_gdbarch))
+
+#endif /* mipsfbsd_TDEP_H */
More information about the svn-src-all
mailing list