2004-04-24 Randolph Chung <tausq@debian.org>
* configure.host (hppa*-*-linux*): New target. * configure.tgt (hppa*-*-linux*): Likewise. * hppa-tdep.c (hppa_gdbarch_init): Set cannot_fetch_register, move gdbarch_init_osabi() call earlier so that osabi-specific frame unwinders can be registered first. * config/djgpp/fnchange.lst: Add entries for hppa-linux-tdep.c and hppa-linux-nat.c. * config/pa/tm-hppa.h (ISR_REGNUM, PID0_REGNUM, PID1_REGNUM) (PID2_REGNUM, PID3_REGNUM): Add definitions of some register numbers. * config/pa/linux.mh: New file. * config/pa/linux.mt: New file. * config/pa/nm-linux.h: New file. * config/pa/xm-linux.h: New file. * hppa-linux-nat.c: New file. * hppa-linux-tdep.c: New file.
This commit is contained in:
Randolph Chung
parent
2a6228efce
commit
50306a9d6e
@ -1,3 +1,21 @@
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2004-04-24 Randolph Chung <tausq@debian.org>
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* configure.host (hppa*-*-linux*): New target.
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* configure.tgt (hppa*-*-linux*): Likewise.
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* hppa-tdep.c (hppa_gdbarch_init): Set cannot_fetch_register, move
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gdbarch_init_osabi() call earlier so that osabi-specific frame
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unwinders can be registered first.
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* config/djgpp/fnchange.lst: Add entries for hppa-linux-tdep.c and
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hppa-linux-nat.c.
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* config/pa/tm-hppa.h (ISR_REGNUM, PID0_REGNUM, PID1_REGNUM)
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(PID2_REGNUM, PID3_REGNUM): Add definitions of some register numbers.
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* config/pa/linux.mh: New file.
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* config/pa/linux.mt: New file.
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* config/pa/nm-linux.h: New file.
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* config/pa/xm-linux.h: New file.
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* hppa-linux-nat.c: New file.
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* hppa-linux-tdep.c: New file.
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2004-04-28 Randolph Chung <tausq@debian.org>
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* hppa-tdep.c (hppa32_return_value): Handle both 4- and 8-byte fp
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@ -232,6 +232,8 @@
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@V@/gdb/testsuite/gdb.mi/mi2-var-display.exp @V@/gdb/testsuite/gdb.mi/mi2vardisplay.exp
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@V@/gdb/amd64-linux-tdep.c @V@/gdb/amd64-ltdep.c
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@V@/gdb/amd64-linux-nat.c @V@/gdb/amd64-lnat.c
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@V@/gdb/hppa-linux-tdep.c @V@/gdb/palnxtdep.c
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@V@/gdb/hppa-linux-nat.c @V@/gdb/palnxnat.c
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@V@/include/ChangeLog-9103 @V@/include/ChangeLog.9103
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@V@/include/coff/ChangeLog-9103 @V@/include/coff/ChangeLog.9103
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@V@/include/elf/ChangeLog-9103 @V@/include/elf/ChangeLog.9103
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9
gdb/config/pa/linux.mh
Normal file
9
gdb/config/pa/linux.mh
Normal file
@ -0,0 +1,9 @@
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# Host: Hewlett-Packard PA-RISC machine, running Linux
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XDEPFILES=
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XM_FILE= xm-linux.h
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NAT_FILE= nm-linux.h
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NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o gcore.o \
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core-regset.o hppa-linux-nat.o linux-proc.o \
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proc-service.o thread-db.o lin-lwp.o linux-nat.o
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LOADLIBES = -ldl -rdynamic
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3
gdb/config/pa/linux.mt
Normal file
3
gdb/config/pa/linux.mt
Normal file
@ -0,0 +1,3 @@
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# Target: HP PA-RISC running Linux
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TDEPFILES= hppa-tdep.o hppa-linux-tdep.o glibc-tdep.o solib.o solib-svr4.o
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TM_FILE=tm-hppa.h
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29
gdb/config/pa/nm-linux.h
Normal file
29
gdb/config/pa/nm-linux.h
Normal file
@ -0,0 +1,29 @@
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/* Native support for GNU/Linux, for GDB, the GNU debugger.
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef PA_NM_LINUX_H
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#define PA_NM_LINUX_H
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#include "config/nm-linux.h"
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#define U_REGS_OFFSET 0
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#endif
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@ -52,9 +52,14 @@ extern int hppa_pc_requires_run_before_use (CORE_ADDR pc);
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#define PCSQ_TAIL_REGNUM 36 /* instruction space queue tail */
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#define EIEM_REGNUM 37 /* External Interrupt Enable Mask */
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#define IIR_REGNUM 38 /* Interrupt Instruction Register */
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#define ISR_REGNUM 39 /* Interrupt Space Register */
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#define IOR_REGNUM 40 /* Interrupt Offset Register */
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#define SR4_REGNUM 43 /* space register 4 */
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#define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */
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#define PID0_REGNUM 52 /* Protection ID */
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#define PID1_REGNUM 53 /* Protection ID */
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#define PID2_REGNUM 55 /* Protection ID */
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#define PID3_REGNUM 56 /* Protection ID */
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#define CCR_REGNUM 54 /* Coprocessor Configuration Register */
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#define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */
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#define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
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31
gdb/config/pa/xm-linux.h
Normal file
31
gdb/config/pa/xm-linux.h
Normal file
@ -0,0 +1,31 @@
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/* Host-dependent definitions for the hppa-linux.
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Copyright 2004 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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|
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef XM_HPPA_LINUX_H
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#define XM_HPPA_LINUX_H
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#include "floatformat.h"
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#define HOST_FLOAT_FORMAT &floatformat_ieee_single_big
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#define HOST_DOUBLE_FORMAT &floatformat_ieee_double_big
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#define HOST_LONG_DOUBLE_FORMAT &floatformat_ieee_double_big
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#endif /* xm-linux.h */
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@ -48,6 +48,7 @@ hppa*-*-hpux10.20) gdb_host=hpux1020 ;;
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hppa*64*-*-hpux11*) gdb_host=hpux11w ;;
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hppa*-*-hpux11*) gdb_host=hpux11 ;;
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hppa*-*-hpux*) gdb_host=hppahpux ;;
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hppa*-*-linux*) gdb_host=linux ;;
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i[34567]86-ncr-*) gdb_host=ncr3000 ;;
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i[34567]86-*-dgux*) gdb_host=i386v4 ;;
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@ -74,6 +74,7 @@ frv-*-*) gdb_target=frv ;;
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hppa*64*-*-hpux11*) gdb_target=hppa64 ;;
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hppa*-*-hpux*) gdb_target=hppahpux ;;
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hppa*-*-hiux*) gdb_target=hppahpux ;;
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hppa*-*-linux*) gdb_target=linux ;;
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hppa*-*-*) gdb_target=hppa ;;
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i[34567]86-ncr-*) gdb_target=ncr3000 ;;
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277
gdb/hppa-linux-nat.c
Normal file
277
gdb/hppa-linux-nat.c
Normal file
@ -0,0 +1,277 @@
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/* Functions specific to running gdb native on HPPA running Linux.
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Copyright 2004 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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||||
it under the terms of the GNU General Public License as published by
|
||||
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,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "gdb_string.h"
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#include <sys/procfs.h>
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#include <string.h>
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#include <asm/offsets.h>
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/* Prototypes for supply_gregset etc. */
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#include "gregset.h"
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/* These must match the order of the register names.
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Some sort of lookup table is needed because the offsets associated
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with the registers are all over the board. */
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static const int u_offsets[] =
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{
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/* general registers */
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-1,
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PT_GR1,
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PT_GR2,
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PT_GR3,
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PT_GR4,
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PT_GR5,
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PT_GR6,
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PT_GR7,
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PT_GR8,
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PT_GR9,
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PT_GR10,
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PT_GR11,
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PT_GR12,
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PT_GR13,
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PT_GR14,
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PT_GR15,
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PT_GR16,
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PT_GR17,
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PT_GR18,
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PT_GR19,
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PT_GR20,
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PT_GR21,
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PT_GR22,
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PT_GR23,
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PT_GR24,
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PT_GR25,
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PT_GR26,
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PT_GR27,
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PT_GR28,
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PT_GR29,
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PT_GR30,
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PT_GR31,
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PT_SAR,
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PT_IAOQ0,
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PT_IASQ0,
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PT_IAOQ1,
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PT_IASQ1,
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-1, /* eiem */
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PT_IIR,
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PT_ISR,
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PT_IOR,
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PT_PSW,
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-1, /* goto */
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PT_SR4,
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PT_SR0,
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PT_SR1,
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PT_SR2,
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PT_SR3,
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PT_SR5,
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PT_SR6,
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PT_SR7,
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-1, /* cr0 */
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-1, /* pid0 */
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-1, /* pid1 */
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-1, /* ccr */
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-1, /* pid2 */
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-1, /* pid3 */
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-1, /* cr24 */
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-1, /* cr25 */
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||||
-1, /* cr26 */
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PT_CR27,
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-1, /* cr28 */
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-1, /* cr29 */
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-1, /* cr30 */
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/* Floating point regs. */
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PT_FR0, PT_FR0 + 4,
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PT_FR1, PT_FR1 + 4,
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PT_FR2, PT_FR2 + 4,
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||||
PT_FR3, PT_FR3 + 4,
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||||
PT_FR4, PT_FR4 + 4,
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PT_FR5, PT_FR5 + 4,
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||||
PT_FR6, PT_FR6 + 4,
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||||
PT_FR7, PT_FR7 + 4,
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PT_FR8, PT_FR8 + 4,
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||||
PT_FR9, PT_FR9 + 4,
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PT_FR10, PT_FR10 + 4,
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||||
PT_FR11, PT_FR11 + 4,
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PT_FR12, PT_FR12 + 4,
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||||
PT_FR13, PT_FR13 + 4,
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PT_FR14, PT_FR14 + 4,
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||||
PT_FR15, PT_FR15 + 4,
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||||
PT_FR16, PT_FR16 + 4,
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PT_FR17, PT_FR17 + 4,
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||||
PT_FR18, PT_FR18 + 4,
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||||
PT_FR19, PT_FR19 + 4,
|
||||
PT_FR20, PT_FR20 + 4,
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||||
PT_FR21, PT_FR21 + 4,
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||||
PT_FR22, PT_FR22 + 4,
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||||
PT_FR23, PT_FR23 + 4,
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||||
PT_FR24, PT_FR24 + 4,
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||||
PT_FR25, PT_FR25 + 4,
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||||
PT_FR26, PT_FR26 + 4,
|
||||
PT_FR27, PT_FR27 + 4,
|
||||
PT_FR28, PT_FR28 + 4,
|
||||
PT_FR29, PT_FR29 + 4,
|
||||
PT_FR30, PT_FR30 + 4,
|
||||
PT_FR31, PT_FR31 + 4,
|
||||
};
|
||||
|
||||
CORE_ADDR
|
||||
register_addr (int regno, CORE_ADDR blockend)
|
||||
{
|
||||
CORE_ADDR addr;
|
||||
|
||||
if ((unsigned) regno >= NUM_REGS)
|
||||
error ("Invalid register number %d.", regno);
|
||||
|
||||
if (u_offsets[regno] == -1)
|
||||
addr = 0;
|
||||
else
|
||||
{
|
||||
addr = (CORE_ADDR) u_offsets[regno];
|
||||
}
|
||||
|
||||
return addr;
|
||||
}
|
||||
|
||||
/*
|
||||
* Registers saved in a coredump:
|
||||
* gr0..gr31
|
||||
* sr0..sr7
|
||||
* iaoq0..iaoq1
|
||||
* iasq0..iasq1
|
||||
* sar, iir, isr, ior, ipsw
|
||||
* cr0, cr24..cr31
|
||||
* cr8,9,12,13
|
||||
* cr10, cr15
|
||||
*/
|
||||
#define GR_REGNUM(_n) (R0_REGNUM+_n)
|
||||
#define TR_REGNUM(_n) (TR0_REGNUM+_n)
|
||||
static const int greg_map[] =
|
||||
{
|
||||
GR_REGNUM(0), GR_REGNUM(1), GR_REGNUM(2), GR_REGNUM(3),
|
||||
GR_REGNUM(4), GR_REGNUM(5), GR_REGNUM(6), GR_REGNUM(7),
|
||||
GR_REGNUM(8), GR_REGNUM(9), GR_REGNUM(10), GR_REGNUM(11),
|
||||
GR_REGNUM(12), GR_REGNUM(13), GR_REGNUM(14), GR_REGNUM(15),
|
||||
GR_REGNUM(16), GR_REGNUM(17), GR_REGNUM(18), GR_REGNUM(19),
|
||||
GR_REGNUM(20), GR_REGNUM(21), GR_REGNUM(22), GR_REGNUM(23),
|
||||
GR_REGNUM(24), GR_REGNUM(25), GR_REGNUM(26), GR_REGNUM(27),
|
||||
GR_REGNUM(28), GR_REGNUM(29), GR_REGNUM(30), GR_REGNUM(31),
|
||||
|
||||
SR4_REGNUM+1, SR4_REGNUM+2, SR4_REGNUM+3, SR4_REGNUM+4,
|
||||
SR4_REGNUM, SR4_REGNUM+5, SR4_REGNUM+6, SR4_REGNUM+7,
|
||||
|
||||
PCOQ_HEAD_REGNUM, PCOQ_TAIL_REGNUM,
|
||||
PCSQ_HEAD_REGNUM, PCSQ_TAIL_REGNUM,
|
||||
|
||||
SAR_REGNUM, IIR_REGNUM, ISR_REGNUM, IOR_REGNUM,
|
||||
IPSW_REGNUM, RCR_REGNUM,
|
||||
|
||||
TR_REGNUM(0), TR_REGNUM(1), TR_REGNUM(2), TR_REGNUM(3),
|
||||
TR_REGNUM(4), TR_REGNUM(5), TR_REGNUM(6), TR_REGNUM(7),
|
||||
|
||||
PID0_REGNUM, PID1_REGNUM, PID2_REGNUM, PID3_REGNUM,
|
||||
CCR_REGNUM, EIEM_REGNUM,
|
||||
};
|
||||
|
||||
void
|
||||
supply_gregset (gdb_gregset_t *gregsetp)
|
||||
{
|
||||
int i;
|
||||
greg_t *regp = (elf_greg_t *) gregsetp;
|
||||
|
||||
for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++)
|
||||
{
|
||||
int regno = greg_map[i];
|
||||
int size = register_size (current_gdbarch, regno);
|
||||
/* When running a 64 bit kernel, a greg_t may be larger than the
|
||||
actual register, so just pick off the LS bits of big-endian word. */
|
||||
supply_register (regno, ((char *) (regp + 1)) - size);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
fill_gregset (gdb_gregset_t *gregsetp, int regno)
|
||||
{
|
||||
int i;
|
||||
greg_t *regp = (greg_t *) gregsetp;
|
||||
|
||||
memset (gregsetp, 0, sizeof (*gregsetp));
|
||||
for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++)
|
||||
{
|
||||
int regi = greg_map[i];
|
||||
|
||||
if (regno == -1 || regi == regno)
|
||||
{
|
||||
int rawsize = register_size (current_gdbarch, regi);
|
||||
regcache_collect (regi, ((char *) (regp + 1)) - rawsize);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Given a pointer to a floating point register set in /proc format
|
||||
(fpregset_t *), unpack the register contents and supply them as gdb's
|
||||
idea of the current floating point register values. */
|
||||
|
||||
void
|
||||
supply_fpregset (gdb_fpregset_t *fpregsetp)
|
||||
{
|
||||
register int regi;
|
||||
char *from;
|
||||
|
||||
for (regi = 0; regi <= 31; regi++)
|
||||
{
|
||||
from = (char *) &((*fpregsetp)[regi]);
|
||||
supply_register (2*regi + HPPA_FP0_REGNUM, from);
|
||||
supply_register (2*regi + HPPA_FP0_REGNUM + 1, from + 4);
|
||||
}
|
||||
}
|
||||
|
||||
/* Given a pointer to a floating point register set in /proc format
|
||||
(fpregset_t *), update the register specified by REGNO from gdb's idea
|
||||
of the current floating point register set. If REGNO is -1, update
|
||||
them all. */
|
||||
|
||||
void
|
||||
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < NUM_REGS; i++)
|
||||
{
|
||||
if (regno == -1 || regno == i)
|
||||
{
|
||||
/* Gross. fpregset_t is double, registers[x] has single
|
||||
precision reg. */
|
||||
char *to = (char *) &((*fpregsetp)[(i - HPPA_FP0_REGNUM) / 2]);
|
||||
if ((i - HPPA_FP0_REGNUM) & 1)
|
||||
to += 4;
|
||||
regcache_collect (i, to);
|
||||
}
|
||||
}
|
||||
}
|
||||
499
gdb/hppa-linux-tdep.c
Normal file
499
gdb/hppa-linux-tdep.c
Normal file
@ -0,0 +1,499 @@
|
||||
/* Target-dependent code for Linux running on PA-RISC, for GDB.
|
||||
|
||||
Copyright 2004 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 "gdbcore.h"
|
||||
#include "osabi.h"
|
||||
#include "target.h"
|
||||
#include "objfiles.h"
|
||||
#include "solib-svr4.h"
|
||||
#include "glibc-tdep.h"
|
||||
#include "frame-unwind.h"
|
||||
#include "trad-frame.h"
|
||||
#include "dwarf2-frame.h"
|
||||
#include "hppa-tdep.h"
|
||||
|
||||
#if 0
|
||||
/* Convert DWARF register number REG to the appropriate register
|
||||
number used by GDB. */
|
||||
static int
|
||||
hppa_dwarf_reg_to_regnum (int reg)
|
||||
{
|
||||
/* registers 0 - 31 are the same in both sets */
|
||||
if (reg < 32)
|
||||
return reg;
|
||||
|
||||
/* dwarf regs 32 to 85 are fpregs 4 - 31 */
|
||||
if (reg >= 32 && reg <= 85)
|
||||
return FP4_REGNUM + (reg - 32);
|
||||
|
||||
warning ("Unmapped DWARF Register #%d encountered\n", reg);
|
||||
return -1;
|
||||
}
|
||||
#endif
|
||||
|
||||
static void
|
||||
hppa_linux_target_write_pc (CORE_ADDR v, ptid_t ptid)
|
||||
{
|
||||
/* Probably this should be done by the kernel, but it isn't. */
|
||||
write_register_pid (PCOQ_HEAD_REGNUM, v | 0x3, ptid);
|
||||
write_register_pid (PCOQ_TAIL_REGNUM, (v + 4) | 0x3, ptid);
|
||||
}
|
||||
|
||||
/* An instruction to match. */
|
||||
struct insn_pattern
|
||||
{
|
||||
unsigned int data; /* See if it matches this.... */
|
||||
unsigned int mask; /* ... with this mask. */
|
||||
};
|
||||
|
||||
/* See bfd/elf32-hppa.c */
|
||||
static struct insn_pattern hppa_long_branch_stub[] = {
|
||||
/* ldil LR'xxx,%r1 */
|
||||
{ 0x20200000, 0xffe00000 },
|
||||
/* be,n RR'xxx(%sr4,%r1) */
|
||||
{ 0xe0202002, 0xffe02002 },
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static struct insn_pattern hppa_long_branch_pic_stub[] = {
|
||||
/* b,l .+8, %r1 */
|
||||
{ 0xe8200000, 0xffe00000 },
|
||||
/* addil LR'xxx - ($PIC_pcrel$0 - 4), %r1 */
|
||||
{ 0x28200000, 0xffe00000 },
|
||||
/* be,n RR'xxxx - ($PIC_pcrel$0 - 8)(%sr4, %r1) */
|
||||
{ 0xe0202002, 0xffe02002 },
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static struct insn_pattern hppa_import_stub[] = {
|
||||
/* addil LR'xxx, %dp */
|
||||
{ 0x2b600000, 0xffe00000 },
|
||||
/* ldw RR'xxx(%r1), %r21 */
|
||||
{ 0x48350000, 0xffffb000 },
|
||||
/* bv %r0(%r21) */
|
||||
{ 0xeaa0c000, 0xffffffff },
|
||||
/* ldw RR'xxx+4(%r1), %r19 */
|
||||
{ 0x48330000, 0xffffb000 },
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static struct insn_pattern hppa_import_pic_stub[] = {
|
||||
/* addil LR'xxx,%r19 */
|
||||
{ 0x2a600000, 0xffe00000 },
|
||||
/* ldw RR'xxx(%r1),%r21 */
|
||||
{ 0x48350000, 0xffffb000 },
|
||||
/* bv %r0(%r21) */
|
||||
{ 0xeaa0c000, 0xffffffff },
|
||||
/* ldw RR'xxx+4(%r1),%r19 */
|
||||
{ 0x48330000, 0xffffb000 },
|
||||
{ 0, 0 },
|
||||
};
|
||||
|
||||
static struct insn_pattern hppa_plt_stub[] = {
|
||||
/* b,l 1b, %r20 - 1b is 3 insns before here */
|
||||
{ 0xea9f1fdd, 0xffffffff },
|
||||
/* depi 0,31,2,%r20 */
|
||||
{ 0xd6801c1e, 0xffffffff },
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static struct insn_pattern hppa_sigtramp[] = {
|
||||
/* ldi 0, %r25 or ldi 1, %r25 */
|
||||
{ 0x34190000, 0xfffffffd },
|
||||
/* ldi __NR_rt_sigreturn, %r20 */
|
||||
{ 0x3414015a, 0xffffffff },
|
||||
/* be,l 0x100(%sr2, %r0), %sr0, %r31 */
|
||||
{ 0xe4008200, 0xffffffff },
|
||||
/* nop */
|
||||
{ 0x08000240, 0xffffffff },
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
#define HPPA_MAX_INSN_PATTERN_LEN (4)
|
||||
|
||||
/* Return non-zero if the instructions at PC match the series
|
||||
described in PATTERN, or zero otherwise. PATTERN is an array of
|
||||
'struct insn_pattern' objects, terminated by an entry whose mask is
|
||||
zero.
|
||||
|
||||
When the match is successful, fill INSN[i] with what PATTERN[i]
|
||||
matched. */
|
||||
static int
|
||||
insns_match_pattern (CORE_ADDR pc,
|
||||
struct insn_pattern *pattern,
|
||||
unsigned int *insn)
|
||||
{
|
||||
int i;
|
||||
CORE_ADDR npc = pc;
|
||||
|
||||
for (i = 0; pattern[i].mask; i++)
|
||||
{
|
||||
insn[i] = read_memory_unsigned_integer (npc, 4);
|
||||
if ((insn[i] & pattern[i].mask) == pattern[i].data)
|
||||
npc += 4;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
hppa_linux_in_dyncall (CORE_ADDR pc)
|
||||
{
|
||||
static CORE_ADDR dyncall = 0;
|
||||
|
||||
/* FIXME: if we switch exec files, dyncall should be reinitialized */
|
||||
if (!dyncall)
|
||||
{
|
||||
struct minimal_symbol *minsym;
|
||||
|
||||
minsym = lookup_minimal_symbol ("$$dyncall", NULL, NULL);
|
||||
if (minsym)
|
||||
dyncall = SYMBOL_VALUE_ADDRESS (minsym);
|
||||
else
|
||||
dyncall = -1;
|
||||
}
|
||||
|
||||
return pc == dyncall;
|
||||
}
|
||||
|
||||
/* There are several kinds of "trampolines" that we need to deal with:
|
||||
- long branch stubs: these are inserted by the linker when a branch
|
||||
target is too far away for a branch insn to reach
|
||||
- plt stubs: these should go into the .plt section, so are easy to find
|
||||
- import stubs: used to call from object to shared lib or shared lib to
|
||||
shared lib; these go in regular text sections. In fact the linker tries
|
||||
to put them throughout the code because branches have limited reachability.
|
||||
We use the same mechanism as ppc64 to recognize the stub insn patterns.
|
||||
- $$dyncall: similar to hpux, hppa-linux uses $$dyncall for indirect function
|
||||
calls. $$dyncall is exported by libgcc.a */
|
||||
static int
|
||||
hppa_linux_in_solib_call_trampoline (CORE_ADDR pc, char *name)
|
||||
{
|
||||
unsigned int insn[HPPA_MAX_INSN_PATTERN_LEN];
|
||||
int r;
|
||||
|
||||
r = in_plt_section (pc, name)
|
||||
|| hppa_linux_in_dyncall (pc)
|
||||
|| insns_match_pattern (pc, hppa_import_stub, insn)
|
||||
|| insns_match_pattern (pc, hppa_import_pic_stub, insn)
|
||||
|| insns_match_pattern (pc, hppa_long_branch_stub, insn)
|
||||
|| insns_match_pattern (pc, hppa_long_branch_pic_stub, insn);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static CORE_ADDR
|
||||
hppa_linux_skip_trampoline_code (CORE_ADDR pc)
|
||||
{
|
||||
unsigned int insn[HPPA_MAX_INSN_PATTERN_LEN];
|
||||
int dp_rel, pic_rel;
|
||||
|
||||
/* dyncall handles both PLABELs and direct addresses */
|
||||
if (hppa_linux_in_dyncall (pc))
|
||||
{
|
||||
pc = (CORE_ADDR) read_register (22);
|
||||
|
||||
/* PLABELs have bit 30 set; if it's a PLABEL, then dereference it */
|
||||
if (pc & 0x2)
|
||||
pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, TARGET_PTR_BIT / 8);
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
dp_rel = pic_rel = 0;
|
||||
if ((dp_rel = insns_match_pattern (pc, hppa_import_stub, insn))
|
||||
|| (pic_rel = insns_match_pattern (pc, hppa_import_pic_stub, insn)))
|
||||
{
|
||||
/* Extract the target address from the addil/ldw sequence. */
|
||||
pc = hppa_extract_21 (insn[0]) + hppa_extract_14 (insn[1]);
|
||||
|
||||
if (dp_rel)
|
||||
pc += (CORE_ADDR) read_register (27);
|
||||
else
|
||||
pc += (CORE_ADDR) read_register (19);
|
||||
|
||||
/* fallthrough */
|
||||
}
|
||||
|
||||
if (in_plt_section (pc, NULL))
|
||||
{
|
||||
pc = (CORE_ADDR) read_memory_integer (pc, TARGET_PTR_BIT / 8);
|
||||
|
||||
/* if the plt slot has not yet been resolved, the target will
|
||||
be the plt stub */
|
||||
if (in_plt_section (pc, NULL))
|
||||
{
|
||||
/* Sanity check: are we pointing to the plt stub? */
|
||||
if (insns_match_pattern (pc, hppa_plt_stub, insn))
|
||||
{
|
||||
/* this should point to the fixup routine */
|
||||
pc = (CORE_ADDR) read_memory_integer (pc + 8, TARGET_PTR_BIT / 8);
|
||||
}
|
||||
else
|
||||
{
|
||||
error ("Cannot resolve plt stub at 0x%s\n",
|
||||
paddr_nz (pc));
|
||||
pc = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
/* Signal frames. */
|
||||
|
||||
/* (This is derived from MD_FALLBACK_FRAME_STATE_FOR in gcc.)
|
||||
|
||||
Unfortunately, because of various bugs and changes to the kernel,
|
||||
we have several cases to deal with.
|
||||
|
||||
In 2.4, the signal trampoline is 4 bytes, and pc should point directly at
|
||||
the beginning of the trampoline and struct rt_sigframe.
|
||||
|
||||
In <= 2.6.5-rc2-pa3, the signal trampoline is 9 bytes, and pc points at
|
||||
the 4th word in the trampoline structure. This is wrong, it should point
|
||||
at the 5th word. This is fixed in 2.6.5-rc2-pa4.
|
||||
|
||||
To detect these cases, we first take pc, align it to 64-bytes
|
||||
to get the beginning of the signal frame, and then check offsets 0, 4
|
||||
and 5 to see if we found the beginning of the trampoline. This will
|
||||
tell us how to locate the sigcontext structure.
|
||||
|
||||
Note that with a 2.4 64-bit kernel, the signal context is not properly
|
||||
passed back to userspace so the unwind will not work correctly. */
|
||||
static CORE_ADDR
|
||||
hppa_linux_sigtramp_find_sigcontext (CORE_ADDR sp)
|
||||
{
|
||||
unsigned int dummy[HPPA_MAX_INSN_PATTERN_LEN];
|
||||
int offs = 0;
|
||||
int try;
|
||||
/* offsets to try to find the trampoline */
|
||||
static int pcoffs[] = { 0, 4*4, 5*4 };
|
||||
/* offsets to the rt_sigframe structure */
|
||||
static int sfoffs[] = { 4*4, 10*4, 10*4 };
|
||||
|
||||
/* rt_sigreturn trampoline:
|
||||
3419000x ldi 0, %r25 or ldi 1, %r25 (x = 0 or 2)
|
||||
3414015a ldi __NR_rt_sigreturn, %r20
|
||||
e4008200 be,l 0x100(%sr2, %r0), %sr0, %r31
|
||||
08000240 nop */
|
||||
|
||||
for (try = 0; try < ARRAY_SIZE (pcoffs); try++)
|
||||
{
|
||||
if (insns_match_pattern (sp + pcoffs[try], hppa_sigtramp, dummy))
|
||||
{
|
||||
offs = sfoffs[try];
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (offs == 0)
|
||||
return 0;
|
||||
|
||||
/* sp + sfoffs[try] points to a struct rt_sigframe, which contains
|
||||
a struct siginfo and a struct ucontext. struct ucontext contains
|
||||
a struct sigcontext. Return an offset to this sigcontext here. Too
|
||||
bad we cannot include system specific headers :-(.
|
||||
sizeof(struct siginfo) == 128
|
||||
offsetof(struct ucontext, uc_mcontext) == 24. */
|
||||
return sp + sfoffs[try] + 128 + 24;
|
||||
}
|
||||
|
||||
struct hppa_linux_sigtramp_unwind_cache
|
||||
{
|
||||
CORE_ADDR base;
|
||||
struct trad_frame_saved_reg *saved_regs;
|
||||
};
|
||||
|
||||
static struct hppa_linux_sigtramp_unwind_cache *
|
||||
hppa_linux_sigtramp_frame_unwind_cache (struct frame_info *next_frame,
|
||||
void **this_cache)
|
||||
{
|
||||
struct gdbarch *gdbarch = get_frame_arch (next_frame);
|
||||
struct hppa_linux_sigtramp_unwind_cache *info;
|
||||
CORE_ADDR sp, pc, scptr;
|
||||
int i;
|
||||
|
||||
if (*this_cache)
|
||||
return *this_cache;
|
||||
|
||||
info = FRAME_OBSTACK_ZALLOC (struct hppa_linux_sigtramp_unwind_cache);
|
||||
*this_cache = info;
|
||||
info->saved_regs = trad_frame_alloc_saved_regs (next_frame);
|
||||
|
||||
pc = frame_pc_unwind (next_frame);
|
||||
sp = (pc & ~63);
|
||||
scptr = hppa_linux_sigtramp_find_sigcontext (sp);
|
||||
|
||||
/* structure of struct sigcontext:
|
||||
|
||||
struct sigcontext {
|
||||
unsigned long sc_flags;
|
||||
unsigned long sc_gr[32];
|
||||
unsigned long long sc_fr[32];
|
||||
unsigned long sc_iasq[2];
|
||||
unsigned long sc_iaoq[2];
|
||||
unsigned long sc_sar; */
|
||||
|
||||
/* Skip sc_flags. */
|
||||
scptr += 4;
|
||||
|
||||
/* GR[0] is the psw, we don't restore that. */
|
||||
scptr += 4;
|
||||
|
||||
/* General registers. */
|
||||
for (i = 1; i < 32; i++)
|
||||
{
|
||||
info->saved_regs[R0_REGNUM + i].addr = scptr;
|
||||
scptr += 4;
|
||||
}
|
||||
|
||||
/* Pad. */
|
||||
scptr += 4;
|
||||
|
||||
/* FP regs; FP0-3 are not restored. */
|
||||
scptr += (8 * 4);
|
||||
|
||||
for (i = 4; i < 32; i++)
|
||||
{
|
||||
info->saved_regs[HPPA_FP0_REGNUM + (i * 2)].addr = scptr;
|
||||
scptr += 4;
|
||||
info->saved_regs[HPPA_FP0_REGNUM + (i * 2) + 1].addr = scptr;
|
||||
scptr += 4;
|
||||
}
|
||||
|
||||
/* IASQ/IAOQ. */
|
||||
info->saved_regs[PCSQ_HEAD_REGNUM].addr = scptr;
|
||||
scptr += 4;
|
||||
info->saved_regs[PCSQ_TAIL_REGNUM].addr = scptr;
|
||||
scptr += 4;
|
||||
|
||||
info->saved_regs[PCOQ_HEAD_REGNUM].addr = scptr;
|
||||
scptr += 4;
|
||||
info->saved_regs[PCOQ_TAIL_REGNUM].addr = scptr;
|
||||
scptr += 4;
|
||||
|
||||
info->base = read_memory_unsigned_integer (
|
||||
info->saved_regs[HPPA_SP_REGNUM].addr, 4);
|
||||
|
||||
return info;
|
||||
}
|
||||
|
||||
static void
|
||||
hppa_linux_sigtramp_frame_this_id (struct frame_info *next_frame,
|
||||
void **this_prologue_cache,
|
||||
struct frame_id *this_id)
|
||||
{
|
||||
struct hppa_linux_sigtramp_unwind_cache *info
|
||||
= hppa_linux_sigtramp_frame_unwind_cache (next_frame, this_prologue_cache);
|
||||
*this_id = frame_id_build (info->base, frame_pc_unwind (next_frame));
|
||||
}
|
||||
|
||||
static void
|
||||
hppa_linux_sigtramp_frame_prev_register (struct frame_info *next_frame,
|
||||
void **this_prologue_cache,
|
||||
int regnum, int *optimizedp,
|
||||
enum lval_type *lvalp,
|
||||
CORE_ADDR *addrp,
|
||||
int *realnump, void *bufferp)
|
||||
{
|
||||
struct hppa_linux_sigtramp_unwind_cache *info
|
||||
= hppa_linux_sigtramp_frame_unwind_cache (next_frame, this_prologue_cache);
|
||||
int pcoqt = (regnum == PCOQ_TAIL_REGNUM);
|
||||
|
||||
if (pcoqt)
|
||||
regnum = PCOQ_HEAD_REGNUM;
|
||||
|
||||
trad_frame_prev_register (next_frame, info->saved_regs, regnum,
|
||||
optimizedp, lvalp, addrp, realnump, bufferp);
|
||||
|
||||
if (pcoqt)
|
||||
store_unsigned_integer (bufferp, 4,
|
||||
extract_unsigned_integer (bufferp, 4) + 4);
|
||||
}
|
||||
|
||||
static const struct frame_unwind hppa_linux_sigtramp_frame_unwind = {
|
||||
SIGTRAMP_FRAME,
|
||||
hppa_linux_sigtramp_frame_this_id,
|
||||
hppa_linux_sigtramp_frame_prev_register
|
||||
};
|
||||
|
||||
/* hppa-linux always uses "new-style" rt-signals. The signal handler's return
|
||||
address should point to a signal trampoline on the stack. The signal
|
||||
trampoline is embedded in a rt_sigframe structure that is aligned on
|
||||
the stack. We take advantage of the fact that sp must be 64-byte aligned,
|
||||
and the trampoline is small, so by rounding down the trampoline address
|
||||
we can find the beginning of the struct rt_sigframe. */
|
||||
static const struct frame_unwind *
|
||||
hppa_linux_sigtramp_unwind_sniffer (struct frame_info *next_frame)
|
||||
{
|
||||
CORE_ADDR pc = frame_pc_unwind (next_frame);
|
||||
CORE_ADDR sp = (pc & ~63);
|
||||
|
||||
if (hppa_linux_sigtramp_find_sigcontext (sp))
|
||||
return &hppa_linux_sigtramp_frame_unwind;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Forward declarations. */
|
||||
extern initialize_file_ftype _initialize_hppa_linux_tdep;
|
||||
|
||||
static void
|
||||
hppa_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
|
||||
/* Linux is always ELF. */
|
||||
tdep->is_elf = 1;
|
||||
|
||||
set_gdbarch_write_pc (gdbarch, hppa_linux_target_write_pc);
|
||||
|
||||
frame_unwind_append_sniffer (gdbarch, hppa_linux_sigtramp_unwind_sniffer);
|
||||
|
||||
/* GNU/Linux uses SVR4-style shared libraries. */
|
||||
set_solib_svr4_fetch_link_map_offsets
|
||||
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
||||
|
||||
set_gdbarch_in_solib_call_trampoline
|
||||
(gdbarch, hppa_linux_in_solib_call_trampoline);
|
||||
set_gdbarch_skip_trampoline_code
|
||||
(gdbarch, hppa_linux_skip_trampoline_code);
|
||||
|
||||
/* GNU/Linux uses the dynamic linker included in the GNU C Library. */
|
||||
set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
|
||||
|
||||
#if 0
|
||||
/* Dwarf-2 unwinding support. Not yet working. */
|
||||
set_gdbarch_dwarf_reg_to_regnum (gdbarch, hppa_dwarf_reg_to_regnum);
|
||||
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, hppa_dwarf_reg_to_regnum);
|
||||
frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
|
||||
frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
|
||||
#endif
|
||||
}
|
||||
|
||||
void
|
||||
_initialize_hppa_linux_tdep (void)
|
||||
{
|
||||
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_LINUX, hppa_linux_init_abi);
|
||||
}
|
||||
@ -2332,6 +2332,7 @@ hppa_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
|
||||
set_gdbarch_sp_regnum (gdbarch, HPPA_SP_REGNUM);
|
||||
set_gdbarch_fp0_regnum (gdbarch, HPPA_FP0_REGNUM);
|
||||
set_gdbarch_cannot_store_register (gdbarch, hppa_cannot_store_register);
|
||||
set_gdbarch_cannot_fetch_register (gdbarch, hppa_cannot_store_register);
|
||||
set_gdbarch_addr_bits_remove (gdbarch, hppa_smash_text_address);
|
||||
set_gdbarch_smash_text_address (gdbarch, hppa_smash_text_address);
|
||||
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
|
||||
@ -2384,14 +2385,14 @@ hppa_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
|
||||
set_gdbarch_unwind_dummy_id (gdbarch, hppa_unwind_dummy_id);
|
||||
set_gdbarch_unwind_pc (gdbarch, hppa_unwind_pc);
|
||||
|
||||
/* Hook in ABI-specific overrides, if they have been registered. */
|
||||
gdbarch_init_osabi (info, gdbarch);
|
||||
|
||||
/* Hook in the default unwinders. */
|
||||
frame_unwind_append_sniffer (gdbarch, hppa_stub_unwind_sniffer);
|
||||
frame_unwind_append_sniffer (gdbarch, hppa_frame_unwind_sniffer);
|
||||
frame_base_append_sniffer (gdbarch, hppa_frame_base_sniffer);
|
||||
|
||||
/* Hook in ABI-specific overrides, if they have been registered. */
|
||||
gdbarch_init_osabi (info, gdbarch);
|
||||
|
||||
return gdbarch;
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user