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binutils-gdb/gdb/arm-linux-nat.c
Eli Zaretskii 197e01b6dc * 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.
2005-12-17 22:34:03 +00:00

741 lines
18 KiB
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/* GNU/Linux on ARM native support.
Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "regcache.h"
#include "target.h"
#include "linux-nat.h"
#include "arm-tdep.h"
#include <sys/user.h>
#include <sys/ptrace.h>
#include <sys/utsname.h>
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
extern int arm_apcs_32;
#define typeNone 0x00
#define typeSingle 0x01
#define typeDouble 0x02
#define typeExtended 0x03
#define FPWORDS 28
#define ARM_CPSR_REGNUM 16
typedef union tagFPREG
{
unsigned int fSingle;
unsigned int fDouble[2];
unsigned int fExtended[3];
}
FPREG;
typedef struct tagFPA11
{
FPREG fpreg[8]; /* 8 floating point registers */
unsigned int fpsr; /* floating point status register */
unsigned int fpcr; /* floating point control register */
unsigned char fType[8]; /* type of floating point value held in
floating point registers. */
int initflag; /* NWFPE initialization flag. */
}
FPA11;
/* The following variables are used to determine the version of the
underlying GNU/Linux operating system. Examples:
GNU/Linux 2.0.35 GNU/Linux 2.2.12
os_version = 0x00020023 os_version = 0x0002020c
os_major = 2 os_major = 2
os_minor = 0 os_minor = 2
os_release = 35 os_release = 12
Note: os_version = (os_major << 16) | (os_minor << 8) | os_release
These are initialized using get_linux_version() from
_initialize_arm_linux_nat(). */
static unsigned int os_version, os_major, os_minor, os_release;
/* On GNU/Linux, threads are implemented as pseudo-processes, in which
case we may be tracing more than one process at a time. In that
case, inferior_ptid will contain the main process ID and the
individual thread (process) ID. get_thread_id () is used to get
the thread id if it's available, and the process id otherwise. */
int
get_thread_id (ptid_t ptid)
{
int tid = TIDGET (ptid);
if (0 == tid)
tid = PIDGET (ptid);
return tid;
}
#define GET_THREAD_ID(PTID) get_thread_id ((PTID));
static void
fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11)
{
unsigned int mem[3];
mem[0] = fpa11->fpreg[fn].fSingle;
mem[1] = 0;
mem[2] = 0;
regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
}
static void
fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11)
{
unsigned int mem[3];
mem[0] = fpa11->fpreg[fn].fDouble[1];
mem[1] = fpa11->fpreg[fn].fDouble[0];
mem[2] = 0;
regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
}
static void
fetch_nwfpe_none (unsigned int fn)
{
unsigned int mem[3] =
{0, 0, 0};
regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
}
static void
fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
{
unsigned int mem[3];
mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */
mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */
mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */
regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]);
}
static void
fetch_nwfpe_register (int regno, FPA11 * fpa11)
{
int fn = regno - ARM_F0_REGNUM;
switch (fpa11->fType[fn])
{
case typeSingle:
fetch_nwfpe_single (fn, fpa11);
break;
case typeDouble:
fetch_nwfpe_double (fn, fpa11);
break;
case typeExtended:
fetch_nwfpe_extended (fn, fpa11);
break;
default:
fetch_nwfpe_none (fn);
}
}
static void
store_nwfpe_single (unsigned int fn, FPA11 *fpa11)
{
unsigned int mem[3];
regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn,
(char *) &mem[0]);
fpa11->fpreg[fn].fSingle = mem[0];
fpa11->fType[fn] = typeSingle;
}
static void
store_nwfpe_double (unsigned int fn, FPA11 *fpa11)
{
unsigned int mem[3];
regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn,
(char *) &mem[0]);
fpa11->fpreg[fn].fDouble[1] = mem[0];
fpa11->fpreg[fn].fDouble[0] = mem[1];
fpa11->fType[fn] = typeDouble;
}
void
store_nwfpe_extended (unsigned int fn, FPA11 *fpa11)
{
unsigned int mem[3];
regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn,
(char *) &mem[0]);
fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */
fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */
fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */
fpa11->fType[fn] = typeDouble;
}
void
store_nwfpe_register (int regno, FPA11 * fpa11)
{
if (register_cached (regno))
{
unsigned int fn = regno - ARM_F0_REGNUM;
switch (fpa11->fType[fn])
{
case typeSingle:
store_nwfpe_single (fn, fpa11);
break;
case typeDouble:
store_nwfpe_double (fn, fpa11);
break;
case typeExtended:
store_nwfpe_extended (fn, fpa11);
break;
}
}
}
/* Get the value of a particular register from the floating point
state of the process and store it into regcache. */
static void
fetch_fpregister (int regno)
{
int ret, tid;
FPA11 fp;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
if (ret < 0)
{
warning (_("Unable to fetch floating point register."));
return;
}
/* Fetch fpsr. */
if (ARM_FPS_REGNUM == regno)
regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
/* Fetch the floating point register. */
if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
{
int fn = regno - ARM_F0_REGNUM;
switch (fp.fType[fn])
{
case typeSingle:
fetch_nwfpe_single (fn, &fp);
break;
case typeDouble:
fetch_nwfpe_double (fn, &fp);
break;
case typeExtended:
fetch_nwfpe_extended (fn, &fp);
break;
default:
fetch_nwfpe_none (fn);
}
}
}
/* Get the whole floating point state of the process and store it
into regcache. */
static void
fetch_fpregs (void)
{
int ret, regno, tid;
FPA11 fp;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
return;
}
/* Fetch fpsr. */
regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
/* Fetch the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
{
int fn = regno - ARM_F0_REGNUM;
switch (fp.fType[fn])
{
case typeSingle:
fetch_nwfpe_single (fn, &fp);
break;
case typeDouble:
fetch_nwfpe_double (fn, &fp);
break;
case typeExtended:
fetch_nwfpe_extended (fn, &fp);
break;
default:
fetch_nwfpe_none (fn);
}
}
}
/* Save a particular register into the floating point state of the
process using the contents from regcache. */
static void
store_fpregister (int regno)
{
int ret, tid;
FPA11 fp;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
return;
}
/* Store fpsr. */
if (ARM_FPS_REGNUM == regno && register_cached (ARM_FPS_REGNUM))
regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
/* Store the floating point register. */
if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
{
store_nwfpe_register (regno, &fp);
}
ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
if (ret < 0)
{
warning (_("Unable to store floating point register."));
return;
}
}
/* Save the whole floating point state of the process using
the contents from regcache. */
static void
store_fpregs (void)
{
int ret, regno, tid;
FPA11 fp;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Read the floating point state. */
ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
if (ret < 0)
{
warning (_("Unable to fetch the floating point registers."));
return;
}
/* Store fpsr. */
if (register_cached (ARM_FPS_REGNUM))
regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr);
/* Store the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
{
fetch_nwfpe_register (regno, &fp);
}
ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
if (ret < 0)
{
warning (_("Unable to store floating point registers."));
return;
}
}
/* Fetch a general register of the process and store into
regcache. */
static void
fetch_register (int regno)
{
int ret, tid;
elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
if (ret < 0)
{
warning (_("Unable to fetch general register."));
return;
}
if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM)
regcache_raw_supply (current_regcache, regno, (char *) &regs[regno]);
if (ARM_PS_REGNUM == regno)
{
if (arm_apcs_32)
regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
(char *) &regs[ARM_CPSR_REGNUM]);
else
regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
(char *) &regs[ARM_PC_REGNUM]);
}
if (ARM_PC_REGNUM == regno)
{
regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]);
regcache_raw_supply (current_regcache, ARM_PC_REGNUM,
(char *) &regs[ARM_PC_REGNUM]);
}
}
/* Fetch all general registers of the process and store into
regcache. */
static void
fetch_regs (void)
{
int ret, regno, tid;
elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
if (ret < 0)
{
warning (_("Unable to fetch general registers."));
return;
}
for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
regcache_raw_supply (current_regcache, regno, (char *) &regs[regno]);
if (arm_apcs_32)
regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
(char *) &regs[ARM_CPSR_REGNUM]);
else
regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
(char *) &regs[ARM_PC_REGNUM]);
regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]);
regcache_raw_supply (current_regcache, ARM_PC_REGNUM,
(char *) &regs[ARM_PC_REGNUM]);
}
/* Store all general registers of the process from the values in
regcache. */
static void
store_register (int regno)
{
int ret, tid;
elf_gregset_t regs;
if (!register_cached (regno))
return;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Get the general registers from the process. */
ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
if (ret < 0)
{
warning (_("Unable to fetch general registers."));
return;
}
if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
regcache_raw_collect (current_regcache, regno, (char *) &regs[regno]);
else if (arm_apcs_32 && regno == ARM_PS_REGNUM)
regcache_raw_collect (current_regcache, regno,
(char *) &regs[ARM_CPSR_REGNUM]);
else if (!arm_apcs_32 && regno == ARM_PS_REGNUM)
regcache_raw_collect (current_regcache, ARM_PC_REGNUM,
(char *) &regs[ARM_PC_REGNUM]);
ret = ptrace (PTRACE_SETREGS, tid, 0, &regs);
if (ret < 0)
{
warning (_("Unable to store general register."));
return;
}
}
static void
store_regs (void)
{
int ret, regno, tid;
elf_gregset_t regs;
/* Get the thread id for the ptrace call. */
tid = GET_THREAD_ID (inferior_ptid);
/* Fetch the general registers. */
ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
if (ret < 0)
{
warning (_("Unable to fetch general registers."));
return;
}
for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
{
if (register_cached (regno))
regcache_raw_collect (current_regcache, regno, (char *) &regs[regno]);
}
if (arm_apcs_32 && register_cached (ARM_PS_REGNUM))
regcache_raw_collect (current_regcache, ARM_PS_REGNUM,
(char *) &regs[ARM_CPSR_REGNUM]);
ret = ptrace (PTRACE_SETREGS, tid, 0, &regs);
if (ret < 0)
{
warning (_("Unable to store general registers."));
return;
}
}
/* Fetch registers from the child process. Fetch all registers if
regno == -1, otherwise fetch all general registers or all floating
point registers depending upon the value of regno. */
static void
arm_linux_fetch_inferior_registers (int regno)
{
if (-1 == regno)
{
fetch_regs ();
fetch_fpregs ();
}
else
{
if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
fetch_register (regno);
if (regno >= ARM_F0_REGNUM && regno <= ARM_FPS_REGNUM)
fetch_fpregister (regno);
}
}
/* Store registers back into the inferior. Store all registers if
regno == -1, otherwise store all general registers or all floating
point registers depending upon the value of regno. */
static void
arm_linux_store_inferior_registers (int regno)
{
if (-1 == regno)
{
store_regs ();
store_fpregs ();
}
else
{
if ((regno < ARM_F0_REGNUM) || (regno > ARM_FPS_REGNUM))
store_register (regno);
if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_FPS_REGNUM))
store_fpregister (regno);
}
}
/* Fill register regno (if it is a general-purpose register) in
*gregsetp with the appropriate value from GDB's register array.
If regno is -1, do this for all registers. */
void
fill_gregset (gdb_gregset_t *gregsetp, int regno)
{
if (-1 == regno)
{
int regnum;
for (regnum = ARM_A1_REGNUM; regnum <= ARM_PC_REGNUM; regnum++)
regcache_raw_collect (current_regcache, regnum,
(char *) &(*gregsetp)[regnum]);
}
else if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
regcache_raw_collect (current_regcache, regno,
(char *) &(*gregsetp)[regno]);
if (ARM_PS_REGNUM == regno || -1 == regno)
{
if (arm_apcs_32)
regcache_raw_collect (current_regcache, ARM_PS_REGNUM,
(char *) &(*gregsetp)[ARM_CPSR_REGNUM]);
else
regcache_raw_collect (current_regcache, ARM_PC_REGNUM,
(char *) &(*gregsetp)[ARM_PC_REGNUM]);
}
}
/* Fill GDB's register array with the general-purpose register values
in *gregsetp. */
void
supply_gregset (gdb_gregset_t *gregsetp)
{
int regno, reg_pc;
for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
regcache_raw_supply (current_regcache, regno,
(char *) &(*gregsetp)[regno]);
if (arm_apcs_32)
regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
(char *) &(*gregsetp)[ARM_CPSR_REGNUM]);
else
regcache_raw_supply (current_regcache, ARM_PS_REGNUM,
(char *) &(*gregsetp)[ARM_PC_REGNUM]);
reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[ARM_PC_REGNUM]);
regcache_raw_supply (current_regcache, ARM_PC_REGNUM, (char *) &reg_pc);
}
/* Fill register regno (if it is a floating-point register) in
*fpregsetp with the appropriate value from GDB's register array.
If regno is -1, do this for all registers. */
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
FPA11 *fp = (FPA11 *) fpregsetp;
if (-1 == regno)
{
int regnum;
for (regnum = ARM_F0_REGNUM; regnum <= ARM_F7_REGNUM; regnum++)
store_nwfpe_register (regnum, fp);
}
else if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
{
store_nwfpe_register (regno, fp);
return;
}
/* Store fpsr. */
if (ARM_FPS_REGNUM == regno || -1 == regno)
regcache_raw_collect (current_regcache, ARM_FPS_REGNUM,
(char *) &fp->fpsr);
}
/* Fill GDB's register array with the floating-point register values
in *fpregsetp. */
void
supply_fpregset (gdb_fpregset_t *fpregsetp)
{
int regno;
FPA11 *fp = (FPA11 *) fpregsetp;
/* Fetch fpsr. */
regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp->fpsr);
/* Fetch the floating point registers. */
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
{
fetch_nwfpe_register (regno, fp);
}
}
int
arm_linux_kernel_u_size (void)
{
return (sizeof (struct user));
}
static unsigned int
get_linux_version (unsigned int *vmajor,
unsigned int *vminor,
unsigned int *vrelease)
{
struct utsname info;
char *pmajor, *pminor, *prelease, *tail;
if (-1 == uname (&info))
{
warning (_("Unable to determine GNU/Linux version."));
return -1;
}
pmajor = strtok (info.release, ".");
pminor = strtok (NULL, ".");
prelease = strtok (NULL, ".");
*vmajor = (unsigned int) strtoul (pmajor, &tail, 0);
*vminor = (unsigned int) strtoul (pminor, &tail, 0);
*vrelease = (unsigned int) strtoul (prelease, &tail, 0);
return ((*vmajor << 16) | (*vminor << 8) | *vrelease);
}
void _initialize_arm_linux_nat (void);
void
_initialize_arm_linux_nat (void)
{
struct target_ops *t;
os_version = get_linux_version (&os_major, &os_minor, &os_release);
/* Fill in the generic GNU/Linux methods. */
t = linux_target ();
/* Add our register access methods. */
t->to_fetch_registers = arm_linux_fetch_inferior_registers;
t->to_store_registers = arm_linux_store_inferior_registers;
/* Register the target. */
add_target (t);
}
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