binutils-gdb/gdb/frv-linux-tdep.c

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/* Target-dependent code for GNU/Linux running on the Fujitsu FR-V,
for GDB.
Copyright (C) 2004, 2006 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
* breakpoint.c: * arm-tdep.c: * ia64-tdep.c: * i386-tdep.c: * hpread.c: * hppa-tdep.c: * hppa-hpux-tdep.c: * gnu-nat.c: * gdbtypes.c: * gdbarch.h: * gdbarch.c: * eval.c: * dwarf2read.c: * dbxread.c: * copying: * symfile.c: * stabsread.c: * sh64-tdep.c: * sh-tdep.c: * s390-tdep.c: * rs6000-tdep.c: * remote.c: * remote-mips.c: * mips-tdep.c: * mdebugread.c: * linux-nat.c: * infrun.c: * xcoffread.c: * win32-nat.c: * valops.c: * utils.c: * tracepoint.c: * target.c: * symtab.c: * c-exp.y: * ada-valprint.c: * ada-typeprint.c: * ada-lex.l: * ada-lang.h: * ada-lang.c: * ada-exp.y: * alphafbsd-tdep.c: * alphabsd-tdep.h: * alphabsd-tdep.c: * alphabsd-nat.c: * alpha-tdep.h: * alpha-tdep.c: * alpha-osf1-tdep.c: * alpha-nat.c: * alpha-mdebug-tdep.c: * alpha-linux-tdep.c: * alpha-linux-nat.c: * aix-thread.c: * abug-rom.c: * arch-utils.c: * annotate.h: * annotate.c: * amd64obsd-tdep.c: * amd64obsd-nat.c: * amd64nbsd-tdep.c: * amd64nbsd-nat.c: * amd64fbsd-tdep.c: * amd64fbsd-nat.c: * amd64bsd-nat.c: * amd64-tdep.h: * amd64-tdep.c: * amd64-sol2-tdep.c: * amd64-nat.h: * amd64-nat.c: * amd64-linux-tdep.c: * amd64-linux-nat.c: * alphanbsd-tdep.c: * block.h: * block.c: * bfd-target.h: * bfd-target.c: * bcache.h: * bcache.c: * ax.h: * ax-general.c: * ax-gdb.h: * ax-gdb.c: * avr-tdep.c: * auxv.h: * auxv.c: * armnbsd-tdep.c: * armnbsd-nat.c: * arm-tdep.h: * arm-linux-nat.c: * arch-utils.h: * charset.c: * call-cmds.h: * c-valprint.c: * c-typeprint.c: * c-lang.h: * c-lang.c: * buildsym.h: * buildsym.c: * bsd-uthread.h: * bsd-uthread.c: * bsd-kvm.h: * bsd-kvm.c: * breakpoint.h: * core-regset.c: * core-aout.c: * completer.h: * completer.c: * complaints.h: * complaints.c: * command.h: * coffread.c: * coff-solib.h: * coff-solib.c: * coff-pe-read.h: * coff-pe-read.c: * cli-out.h: * cli-out.c: * charset.h: * dink32-rom.c: * dictionary.h: * dictionary.c: * demangle.c: * defs.h: * dcache.h: * dcache.c: * d10v-tdep.c: * cpu32bug-rom.c: * cp-valprint.c: * cp-support.h: * cp-support.c: * cp-namespace.c: * cp-abi.h: * cp-abi.c: * corelow.c: * corefile.c: * environ.c: * elfread.c: * dwarfread.c: * dwarf2loc.c: * dwarf2expr.h: * dwarf2expr.c: * dwarf2-frame.h: * dwarf2-frame.c: * dve3900-rom.c: * dummy-frame.h: * dummy-frame.c: * dsrec.c: * doublest.h: * doublest.c: * disasm.h: * disasm.c: * fork-child.c: * findvar.c: * fbsd-nat.h: * fbsd-nat.c: * f-valprint.c: * f-typeprint.c: * f-lang.h: * f-lang.c: * expression.h: * expprint.c: * exec.h: * exec.c: * exceptions.h: * exceptions.c: * event-top.h: * event-top.c: * event-loop.h: * event-loop.c: * gdb.c: * gdb-stabs.h: * gdb-events.h: * gdb-events.c: * gcore.c: * frv-tdep.h: * frv-tdep.c: * frv-linux-tdep.c: * frame.h: * frame.c: * frame-unwind.h: * frame-unwind.c: * frame-base.h: * frame-base.c: * gdb_vfork.h: * gdb_thread_db.h: * gdb_string.h: * gdb_stat.h: * gdb_regex.h: * gdb_ptrace.h: * gdb_proc_service.h: * gdb_obstack.h: * gdb_locale.h: * gdb_dirent.h: * gdb_curses.h: * gdb_assert.h: * gdbarch.sh: * gdb.h: * hpux-thread.c: * hppabsd-nat.c: * hppa-tdep.h: * hpacc-abi.c: * h8300-tdep.c: * gregset.h: * go32-nat.c: * gnu-v3-abi.c: * gnu-v2-abi.h: * gnu-v2-abi.c: * gnu-nat.h: * glibc-tdep.c: * gdbtypes.h: * gdbcore.h: * gdbcmd.h: * i386nbsd-tdep.c: * i386nbsd-nat.c: * i386gnu-tdep.c: * i386gnu-nat.c: * i386fbsd-tdep.c: * i386fbsd-nat.c: * i386bsd-tdep.c: * i386bsd-nat.h: * i386bsd-nat.c: * i386-tdep.h: * i386-sol2-nat.c: * i386-nto-tdep.c: * i386-nat.c: * i386-linux-tdep.h: * i386-linux-tdep.c: * i386-linux-nat.c: * i386-cygwin-tdep.c: * inf-ttrace.c: * inf-ptrace.h: * inf-ptrace.c: * inf-loop.h: * inf-loop.c: * inf-child.h: * inf-child.c: * ia64-tdep.h: * ia64-linux-nat.c: * i387-tdep.h: * i387-tdep.c: * i386v4-nat.c: * i386v-nat.c: * i386obsd-tdep.c: * i386obsd-nat.c: * kod.c: * jv-valprint.c: * jv-typeprint.c: * jv-lang.h: * jv-lang.c: * irix5-nat.c: * iq2000-tdep.c: * interps.h: * interps.c: * inftarg.c: * inflow.h: * inflow.c: * inferior.h: * infcmd.c: * infcall.h: * infcall.c: * inf-ttrace.h: * m32r-tdep.h: * m32r-tdep.c: * m32r-rom.c: * m32r-linux-tdep.c: * m32r-linux-nat.c: * m2-valprint.c: * m2-typeprint.c: * m2-lang.h: * m2-lang.c: * lynx-nat.c: * linux-thread-db.c: * linux-nat.h: * linespec.c: * libunwind-frame.h: * libunwind-frame.c: * language.h: * language.c: * macroexp.c: * macrocmd.c: * m88kbsd-nat.c: * m88k-tdep.h: * m88k-tdep.c: * m68klinux-tdep.c: * m68klinux-nat.c: * m68kbsd-tdep.c: * m68kbsd-nat.c: * m68k-tdep.h: * m68k-tdep.c: * mips-linux-nat.c: * mips-irix-tdep.c: * minsyms.c: * memattr.h: * memattr.c: * mem-break.c: * mdebugread.h: * main.h: * main.c: * macrotab.h: * macrotab.c: * macroscope.h: * macroscope.c: * macroexp.h: * nbsd-tdep.c: * mt-tdep.c: * monitor.h: * monitor.c: * mn10300-tdep.h: * mn10300-tdep.c: * mn10300-linux-tdep.c: * mipsv4-nat.c: * mipsread.c: * mipsnbsd-tdep.h: * mipsnbsd-tdep.c: * mipsnbsd-nat.c: * mips64obsd-tdep.c: * mips64obsd-nat.c: * mips-tdep.h: * mips-mdebug-tdep.c: * mips-linux-tdep.c: * osabi.h: * osabi.c: * ocd.h: * ocd.c: * observer.c: * objfiles.h: * objfiles.c: * objc-lang.h: * objc-lang.c: * objc-exp.y: * nto-tdep.h: * nto-tdep.c: * nto-procfs.c: * nlmread.c: * nbsd-tdep.h: * ppcobsd-tdep.c: * ppcobsd-nat.c: * ppcnbsd-tdep.h: * ppcnbsd-tdep.c: * ppcnbsd-nat.c: * ppcbug-rom.c: * ppc-tdep.h: * ppc-sysv-tdep.c: * ppc-linux-tdep.c: * ppc-linux-nat.c: * ppc-bdm.c: * parser-defs.h: * parse.c: * p-valprint.c: * p-typeprint.c: * p-lang.h: * p-lang.c: * remote-fileio.h: * remote-fileio.c: * remote-est.c: * remote-e7000.c: * regset.h: * regset.c: * reggroups.h: * reggroups.c: * regcache.h: * regcache.c: * proc-why.c: * proc-service.c: * proc-events.c: * printcmd.c: * ppcobsd-tdep.h: * sentinel-frame.h: * sentinel-frame.c: * scm-valprint.c: * scm-tags.h: * scm-lang.h: * scm-lang.c: * scm-exp.c: * s390-tdep.h: * rom68k-rom.c: * remote.h: * remote-utils.c: * remote-st.c: * remote-sim.c: * remote-sds.c: * remote-rdp.c: * remote-rdi.c: * remote-hms.c: * sim-regno.h: * shnbsd-tdep.h: * shnbsd-tdep.c: * shnbsd-nat.c: * sh-tdep.h: * serial.h: * serial.c: * ser-unix.h: * ser-unix.c: * ser-tcp.c: * ser-pipe.c: * ser-go32.c: * ser-e7kpc.c: * ser-base.h: * ser-base.c: * solib.c: * solib-svr4.h: * solib-svr4.c: * solib-sunos.c: * solib-som.h: * solib-som.c: * solib-pa64.h: * solib-pa64.c: * solib-osf.c: * solib-null.c: * solib-legacy.c: * solib-irix.c: * solib-frv.c: * solib-aix5.c: * sol-thread.c: * sparc64-linux-tdep.c: * sparc64-linux-nat.c: * sparc-tdep.h: * sparc-tdep.c: * sparc-sol2-tdep.c: * sparc-sol2-nat.c: * sparc-nat.h: * sparc-nat.c: * sparc-linux-tdep.c: * sparc-linux-nat.c: * source.h: * source.c: * somread.c: * solist.h: * solib.h: * std-regs.c: * stack.h: * stack.c: * stabsread.h: * sparcobsd-tdep.c: * sparcnbsd-tdep.c: * sparcnbsd-nat.c: * sparc64obsd-tdep.c: * sparc64nbsd-tdep.c: * sparc64nbsd-nat.c: * sparc64fbsd-tdep.c: * sparc64fbsd-nat.c: * sparc64-tdep.h: * sparc64-tdep.c: * sparc64-sol2-tdep.c: * sparc64-nat.c: * ui-file.c: * typeprint.h: * typeprint.c: * tramp-frame.h: * tramp-frame.c: * trad-frame.h: * trad-frame.c: * tracepoint.h: * top.c: * tobs.inc: * thread.c: * terminal.h: * target.h: * symfile.h: * stop-gdb.c: * vaxbsd-nat.c: * vax-tdep.h: * vax-tdep.c: * vax-nat.c: * varobj.h: * varobj.c: * value.h: * value.c: * valprint.h: * valprint.c: * v850-tdep.c: * uw-thread.c: * user-regs.c: * ui-out.h: * ui-out.c: * ui-file.h: * xcoffsolib.h: * xcoffsolib.c: * wrapper.c: * wince.c: * wince-stub.h: * wince-stub.c: * vaxobsd-tdep.c: * vaxnbsd-tdep.c: * gdb_gcore.sh: * copying.c: * configure.ac: * aclocal.m4: * acinclude.m4: * reply_mig_hack.awk: * observer.sh: * gdb_mbuild.sh: * arm-linux-tdep.c: * blockframe.c: * dbug-rom.c: * environ.h: * dwarf2loc.h: * gdb-events.sh: * glibc-tdep.h: * gdb_wait.h: * gdbthread.h: * i386-sol2-tdep.c: * hppabsd-tdep.c: * hppa-linux-nat.c: * hppa-hpux-nat.c: * ia64-linux-tdep.c: * infptrace.c: * linespec.h: * maint.c: * mips-mdebug-tdep.h: * remote-m32r-sdi.c: * s390-nat.c: * rs6000-nat.c: * remote-utils.h: * sh3-rom.c: * sh-linux-tdep.c: * top.h: * symtab.h: * symmisc.c: * symfile-mem.c: * srec.h: * user-regs.h: * version.h: * valarith.c: * xstormy16-tdep.c: * wrapper.h: * Makefile.in: * f-exp.y: * cris-tdep.c: * cp-name-parser.y: * procfs.c: * proc-utils.h: * proc-flags.c: * proc-api.c: * p-exp.y: * m68hc11-tdep.c: * m2-exp.y: * kod.h: * kod-cisco.c: * jv-exp.y: * hppa-linux-tdep.c: Add (c) after Copyright. Update the FSF address.
2005-12-18 06:34:03 +08:00
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "defs.h"
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#include "gdbcore.h"
#include "target.h"
#include "frame.h"
#include "osabi.h"
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#include "regcache.h"
#include "elf-bfd.h"
#include "elf/frv.h"
#include "frv-tdep.h"
#include "trad-frame.h"
#include "frame-unwind.h"
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#include "regset.h"
#include "gdb_string.h"
/* Define the size (in bytes) of an FR-V instruction. */
static const int frv_instr_size = 4;
enum {
NORMAL_SIGTRAMP = 1,
RT_SIGTRAMP = 2
};
static int
frv_linux_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
char buf[frv_instr_size];
LONGEST instr;
int retval = 0;
if (target_read_memory (pc, buf, sizeof buf) != 0)
return 0;
instr = extract_unsigned_integer (buf, sizeof buf);
if (instr == 0x8efc0077) /* setlos #__NR_sigreturn, gr7 */
retval = NORMAL_SIGTRAMP;
else if (instr -= 0x8efc00ad) /* setlos #__NR_rt_sigreturn, gr7 */
retval = RT_SIGTRAMP;
else
return 0;
if (target_read_memory (pc + frv_instr_size, buf, sizeof buf) != 0)
return 0;
instr = extract_unsigned_integer (buf, sizeof buf);
if (instr != 0xc0700000) /* tira gr0, 0 */
return 0;
/* If we get this far, we'll return a non-zero value, either
NORMAL_SIGTRAMP (1) or RT_SIGTRAMP (2). */
return retval;
}
/* Given NEXT_FRAME, the "callee" frame of the sigtramp frame that we
wish to decode, and REGNO, one of the frv register numbers defined
in frv-tdep.h, return the address of the saved register (corresponding
to REGNO) in the sigtramp frame. Return -1 if the register is not
found in the sigtramp frame. The magic numbers in the code below
were computed by examining the following kernel structs:
From arch/frv/kernel/signal.c:
struct sigframe
{
void (*pretcode)(void);
int sig;
struct sigcontext sc;
unsigned long extramask[_NSIG_WORDS-1];
uint32_t retcode[2];
};
struct rt_sigframe
{
void (*pretcode)(void);
int sig;
struct siginfo *pinfo;
void *puc;
struct siginfo info;
struct ucontext uc;
uint32_t retcode[2];
};
From include/asm-frv/ucontext.h:
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;
};
From include/asm-frv/signal.h:
typedef struct sigaltstack {
void *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
From include/asm-frv/sigcontext.h:
struct sigcontext {
struct user_context sc_context;
unsigned long sc_oldmask;
} __attribute__((aligned(8)));
From include/asm-frv/registers.h:
struct user_int_regs
{
unsigned long psr;
unsigned long isr;
unsigned long ccr;
unsigned long cccr;
unsigned long lr;
unsigned long lcr;
unsigned long pc;
unsigned long __status;
unsigned long syscallno;
unsigned long orig_gr8;
unsigned long gner[2];
unsigned long long iacc[1];
union {
unsigned long tbr;
unsigned long gr[64];
};
};
struct user_fpmedia_regs
{
unsigned long fr[64];
unsigned long fner[2];
unsigned long msr[2];
unsigned long acc[8];
unsigned char accg[8];
unsigned long fsr[1];
};
struct user_context
{
struct user_int_regs i;
struct user_fpmedia_regs f;
void *extension;
} __attribute__((aligned(8))); */
static LONGEST
frv_linux_sigcontext_reg_addr (struct frame_info *next_frame, int regno,
CORE_ADDR *sc_addr_cache_ptr)
{
CORE_ADDR sc_addr;
if (sc_addr_cache_ptr && *sc_addr_cache_ptr)
{
sc_addr = *sc_addr_cache_ptr;
}
else
{
CORE_ADDR pc, sp;
char buf[4];
int tramp_type;
pc = frame_pc_unwind (next_frame);
tramp_type = frv_linux_pc_in_sigtramp (pc, 0);
frame_unwind_register (next_frame, sp_regnum, buf);
sp = extract_unsigned_integer (buf, sizeof buf);
if (tramp_type == NORMAL_SIGTRAMP)
{
/* For a normal sigtramp frame, the sigcontext struct starts
at SP + 8. */
sc_addr = sp + 8;
}
else if (tramp_type == RT_SIGTRAMP)
{
/* For a realtime sigtramp frame, SP + 12 contains a pointer
to a ucontext struct. The ucontext struct contains a
sigcontext struct starting 24 bytes in. (The offset of
uc_mcontext within struct ucontext is derived as follows:
stack_t is a 12-byte struct and struct sigcontext is
8-byte aligned. This gives an offset of 8 + 12 + 4 (for
padding) = 24.) */
if (target_read_memory (sp + 12, buf, sizeof buf) != 0)
{
2005-02-10 Andrew Cagney <cagney@gnu.org> Mark up all error and warning messages. * ada-lang.c, amd64-tdep.c, arch-utils.c, breakpoint.c: Update. * bsd-kvm.c, bsd-uthread.c, coff-solib.h, coffread.c: Update. * core-aout.c, core-regset.c, corefile.c, corelow.c: Update. * cp-abi.c, cp-support.c, cp-valprint.c, cris-tdep.c: Update. * dbxread.c, demangle.c, doublest.c, dsrec.c: Update. * dve3900-rom.c, dwarf2expr.c, dwarf2loc.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, eval.c: Update. * event-top.c, exec.c, expprint.c, f-lang.c: Update. * f-typeprint.c, f-valprint.c, fbsd-nat.c, findvar.c: Update. * frame.c, frv-linux-tdep.c, gcore.c, gdbtypes.c: Update. * gnu-nat.c, gnu-v2-abi.c, gnu-v3-abi.c, go32-nat.c: Update. * hpacc-abi.c, hppa-hpux-nat.c, hppa-hpux-tdep.c: Update. * hppa-linux-nat.c, hppa-linux-tdep.c, hppa-tdep.c: Update. * hpread.c, hpux-thread.c, i386-linux-nat.c: Update. * i386-linux-tdep.c, i386-tdep.c, i386bsd-nat.c: Update. * i386gnu-nat.c, i387-tdep.c, ia64-linux-nat.c: Update. * ia64-tdep.c, inf-child.c, inf-ptrace.c, inf-ttrace.c: Update. * infcall.c, infcmd.c, inflow.c, infptrace.c, infrun.c: Update. * inftarg.c, interps.c, irix5-nat.c, jv-lang.c: Update. * kod-cisco.c, kod.c, language.c, libunwind-frame.c: Update. * linespec.c, linux-nat.c, linux-thread-db.c, m2-lang.c: Update. * m32r-rom.c, m68hc11-tdep.c, m68k-tdep.c: Update. * m68klinux-nat.c, macrocmd.c, macroexp.c, main.c: Update. * maint.c, mdebugread.c, mem-break.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mipsread.c, monitor.c: Update. * nlmread.c, nto-procfs.c, objc-lang.c, objfiles.c: Update. * observer.c, ocd.c, p-lang.c, p-typeprint.c: Update. * p-valprint.c, pa64solib.c, parse.c, ppc-linux-tdep.c: Update. * ppcnbsd-tdep.c, printcmd.c, procfs.c, remote-e7000.c: Update. * remote-fileio.c, remote-m32r-sdi.c, remote-rdi.c: Update. * remote-rdp.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote-utils.h, remote.c: Update. * rom68k-rom.c, rs6000-nat.c, s390-tdep.c, scm-lang.c: Update. * ser-e7kpc.c, ser-tcp.c, ser-unix.c, sh-tdep.c: Update. * sh3-rom.c, shnbsd-tdep.c, sol-thread.c, solib-aix5.c: Update. * solib-frv.c, solib-irix.c, solib-osf.c, solib-pa64.c: Update. * solib-som.c, solib-sunos.c, solib-svr4.c, solib.c: Update. * somread.c, somsolib.c, source.c, stabsread.c: Update. * stack.c, std-regs.c, symfile-mem.c, symfile.c: Update. * symmisc.c, symtab.c, target.c, thread.c, top.c: Update. * tracepoint.c, trad-frame.c, typeprint.c, utils.c: Update. * uw-thread.c, valarith.c, valops.c, valprint.c: Update. * value.c, varobj.c, version.in, win32-nat.c, wince.c: Update. * xcoffread.c, xcoffsolib.c, cli/cli-cmds.c: Update. * cli/cli-decode.c, cli/cli-dump.c, cli/cli-logging.c: Update. * cli/cli-script.c, cli/cli-setshow.c, mi/mi-cmd-break.c: Update. * mi/mi-cmd-disas.c, mi/mi-cmd-env.c, mi/mi-cmd-file.c: Update. * mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-getopt.c: Update. * mi/mi-symbol-cmds.c, tui/tui-layout.c, tui/tui-stack.c: Update. * tui/tui-win.c: Update.
2005-02-11 12:06:14 +08:00
warning (_("Can't read realtime sigtramp frame."));
return 0;
}
sc_addr = extract_unsigned_integer (buf, sizeof buf);
sc_addr += 24;
}
else
2005-02-11 Andrew Cagney <cagney@gnu.org> Mark up error_no_arg, query, perror_with_name, complaint, and internal_error. * breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update. * cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update. * dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update. * exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update. * frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update. * gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update. * go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update. * i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update. * i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update. * infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update. * interps.c, language.c, linespec.c, linux-nat.c: Update. * m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update. * m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update. * macrotab.c, maint.c, mdebugread.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update. * mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update. * objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update. * parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update. * ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update. * regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update. * remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update. * s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update. * sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update. * solib-aix5.c, solib-svr4.c, solib.c, source.c: Update. * sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update. * symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update. * utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update. * win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update. * cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update. * cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update. * mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update. * tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-12 02:13:55 +08:00
internal_error (__FILE__, __LINE__, _("not a signal trampoline"));
if (sc_addr_cache_ptr)
*sc_addr_cache_ptr = sc_addr;
}
switch (regno)
{
case psr_regnum :
return sc_addr + 0;
/* sc_addr + 4 has "isr", the Integer Status Register. */
case ccr_regnum :
return sc_addr + 8;
case cccr_regnum :
return sc_addr + 12;
case lr_regnum :
return sc_addr + 16;
case lcr_regnum :
return sc_addr + 20;
case pc_regnum :
return sc_addr + 24;
/* sc_addr + 28 is __status, the exception status.
sc_addr + 32 is syscallno, the syscall number or -1.
sc_addr + 36 is orig_gr8, the original syscall arg #1.
sc_addr + 40 is gner[0].
sc_addr + 44 is gner[1]. */
case iacc0h_regnum :
return sc_addr + 48;
case iacc0l_regnum :
return sc_addr + 52;
default :
if (first_gpr_regnum <= regno && regno <= last_gpr_regnum)
return sc_addr + 56 + 4 * (regno - first_gpr_regnum);
else if (first_fpr_regnum <= regno && regno <= last_fpr_regnum)
return sc_addr + 312 + 4 * (regno - first_fpr_regnum);
else
return -1; /* not saved. */
}
}
/* Signal trampolines. */
static struct trad_frame_cache *
frv_linux_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
{
struct trad_frame_cache *cache;
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
CORE_ADDR addr;
char buf[4];
int regnum;
CORE_ADDR sc_addr_cache_val = 0;
struct frame_id this_id;
if (*this_cache)
return *this_cache;
cache = trad_frame_cache_zalloc (next_frame);
/* FIXME: cagney/2004-05-01: This is is long standing broken code.
The frame ID's code address should be the start-address of the
signal trampoline and not the current PC within that
trampoline. */
frame_unwind_register (next_frame, sp_regnum, buf);
this_id = frame_id_build (extract_unsigned_integer (buf, sizeof buf),
frame_pc_unwind (next_frame));
trad_frame_set_id (cache, this_id);
for (regnum = 0; regnum < frv_num_regs; regnum++)
{
LONGEST reg_addr = frv_linux_sigcontext_reg_addr (next_frame, regnum,
&sc_addr_cache_val);
if (reg_addr != -1)
trad_frame_set_reg_addr (cache, regnum, reg_addr);
}
*this_cache = cache;
return cache;
}
static void
frv_linux_sigtramp_frame_this_id (struct frame_info *next_frame, void **this_cache,
struct frame_id *this_id)
{
struct trad_frame_cache *cache =
frv_linux_sigtramp_frame_cache (next_frame, this_cache);
trad_frame_get_id (cache, this_id);
}
static void
frv_linux_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, gdb_byte *valuep)
{
/* Make sure we've initialized the cache. */
struct trad_frame_cache *cache =
frv_linux_sigtramp_frame_cache (next_frame, this_cache);
trad_frame_get_register (cache, next_frame, regnum, optimizedp, lvalp,
addrp, realnump, valuep);
}
static const struct frame_unwind frv_linux_sigtramp_frame_unwind =
{
SIGTRAMP_FRAME,
frv_linux_sigtramp_frame_this_id,
frv_linux_sigtramp_frame_prev_register
};
static const struct frame_unwind *
frv_linux_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 (frv_linux_pc_in_sigtramp (pc, name))
return &frv_linux_sigtramp_frame_unwind;
return NULL;
}
2006-03-16 07:38:09 +08:00
/* The FRV kernel defines ELF_NGREG as 46. We add 2 in order to include
the loadmap addresses in the register set. (See below for more info.) */
#define FRV_ELF_NGREG (46 + 2)
typedef unsigned char frv_elf_greg_t[4];
typedef struct { frv_elf_greg_t reg[FRV_ELF_NGREG]; } frv_elf_gregset_t;
typedef unsigned char frv_elf_fpreg_t[4];
typedef struct
{
frv_elf_fpreg_t fr[64];
frv_elf_fpreg_t fner[2];
frv_elf_fpreg_t msr[2];
frv_elf_fpreg_t acc[8];
unsigned char accg[8];
frv_elf_fpreg_t fsr[1];
} frv_elf_fpregset_t;
/* Constants for accessing elements of frv_elf_gregset_t. */
#define FRV_PT_PSR 0
#define FRV_PT_ISR 1
#define FRV_PT_CCR 2
#define FRV_PT_CCCR 3
#define FRV_PT_LR 4
#define FRV_PT_LCR 5
#define FRV_PT_PC 6
#define FRV_PT_GNER0 10
#define FRV_PT_GNER1 11
#define FRV_PT_IACC0H 12
#define FRV_PT_IACC0L 13
/* Note: Only 32 of the GRs will be found in the corefile. */
#define FRV_PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63. */
#define FRV_PT_TBR FRV_PT_GR(0) /* gr0 is always 0, so TBR is stuffed
there. */
/* Technically, the loadmap addresses are not part of `pr_reg' as
found in the elf_prstatus struct. The fields which communicate the
loadmap address appear (by design) immediately after `pr_reg'
though, and the BFD function elf32_frv_grok_prstatus() has been
implemented to include these fields in the register section that it
extracts from the core file. So, for our purposes, they may be
viewed as registers. */
#define FRV_PT_EXEC_FDPIC_LOADMAP 46
#define FRV_PT_INTERP_FDPIC_LOADMAP 47
/* Unpack an frv_elf_gregset_t into GDB's register cache. */
static void
frv_linux_supply_gregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
int regi;
char zerobuf[MAX_REGISTER_SIZE];
const frv_elf_gregset_t *gregsetp = gregs;
memset (zerobuf, 0, MAX_REGISTER_SIZE);
/* gr0 always contains 0. Also, the kernel passes the TBR value in
this slot. */
regcache_raw_supply (regcache, first_gpr_regnum, zerobuf);
for (regi = first_gpr_regnum + 1; regi <= last_gpr_regnum; regi++)
{
if (regi >= first_gpr_regnum + 32)
regcache_raw_supply (regcache, regi, zerobuf);
else
regcache_raw_supply (regcache, regi,
gregsetp->reg[FRV_PT_GR (regi - first_gpr_regnum)]);
}
regcache_raw_supply (regcache, pc_regnum, gregsetp->reg[FRV_PT_PC]);
regcache_raw_supply (regcache, psr_regnum, gregsetp->reg[FRV_PT_PSR]);
regcache_raw_supply (regcache, ccr_regnum, gregsetp->reg[FRV_PT_CCR]);
regcache_raw_supply (regcache, cccr_regnum, gregsetp->reg[FRV_PT_CCCR]);
regcache_raw_supply (regcache, lr_regnum, gregsetp->reg[FRV_PT_LR]);
regcache_raw_supply (regcache, lcr_regnum, gregsetp->reg[FRV_PT_LCR]);
regcache_raw_supply (regcache, gner0_regnum, gregsetp->reg[FRV_PT_GNER0]);
regcache_raw_supply (regcache, gner1_regnum, gregsetp->reg[FRV_PT_GNER1]);
regcache_raw_supply (regcache, tbr_regnum, gregsetp->reg[FRV_PT_TBR]);
regcache_raw_supply (regcache, fdpic_loadmap_exec_regnum,
gregsetp->reg[FRV_PT_EXEC_FDPIC_LOADMAP]);
regcache_raw_supply (regcache, fdpic_loadmap_interp_regnum,
gregsetp->reg[FRV_PT_INTERP_FDPIC_LOADMAP]);
}
/* Unpack an frv_elf_fpregset_t into GDB's register cache. */
static void
frv_linux_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
int regi;
const frv_elf_fpregset_t *fpregsetp = gregs;
for (regi = first_fpr_regnum; regi <= last_fpr_regnum; regi++)
regcache_raw_supply (regcache, regi, fpregsetp->fr[regi - first_fpr_regnum]);
regcache_raw_supply (regcache, fner0_regnum, fpregsetp->fner[0]);
regcache_raw_supply (regcache, fner1_regnum, fpregsetp->fner[1]);
regcache_raw_supply (regcache, msr0_regnum, fpregsetp->msr[0]);
regcache_raw_supply (regcache, msr1_regnum, fpregsetp->msr[1]);
for (regi = acc0_regnum; regi <= acc7_regnum; regi++)
regcache_raw_supply (regcache, regi, fpregsetp->acc[regi - acc0_regnum]);
regcache_raw_supply (regcache, accg0123_regnum, fpregsetp->accg);
regcache_raw_supply (regcache, accg4567_regnum, fpregsetp->accg + 4);
regcache_raw_supply (regcache, fsr0_regnum, fpregsetp->fsr[0]);
}
/* FRV Linux kernel register sets. */
2006-03-16 07:38:09 +08:00
static struct regset frv_linux_gregset =
{
NULL,
frv_linux_supply_gregset
};
static struct regset frv_linux_fpregset =
{
NULL,
frv_linux_supply_fpregset
};
static const struct regset *
frv_linux_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0
&& sect_size >= sizeof (frv_elf_gregset_t))
return &frv_linux_gregset;
if (strcmp (sect_name, ".reg2") == 0
&& sect_size >= sizeof (frv_elf_fpregset_t))
return &frv_linux_fpregset;
return NULL;
}
static void
frv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* Set the sigtramp frame sniffer. */
frame_unwind_append_sniffer (gdbarch, frv_linux_sigtramp_frame_sniffer);
2006-03-16 07:38:09 +08:00
set_gdbarch_regset_from_core_section (gdbarch,
frv_linux_regset_from_core_section);
}
static enum gdb_osabi
frv_linux_elf_osabi_sniffer (bfd *abfd)
{
int elf_flags;
elf_flags = elf_elfheader (abfd)->e_flags;
/* Assume GNU/Linux if using the FDPIC ABI. If/when another OS shows
up that uses this ABI, we'll need to start using .note sections
or some such. */
if (elf_flags & EF_FRV_FDPIC)
return GDB_OSABI_LINUX;
else
return GDB_OSABI_UNKNOWN;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_frv_linux_tdep (void);
void
_initialize_frv_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_frv, 0, GDB_OSABI_LINUX, frv_linux_init_abi);
gdbarch_register_osabi_sniffer (bfd_arch_frv,
bfd_target_elf_flavour,
frv_linux_elf_osabi_sniffer);
}