* Merge in HPPA/BSD patches from Utah:
* defs.h: Add const to 2nd arg of psignal prototype. * hppah-tdep.c: Renamed to hppa-tdep.c 'cuz it's common code with BSD now. * hppab-core.c: Deleted. No longer useful. * hppab-nat.c: #include more files. Use PT_WUREGS, not PT_WRITE_U. * hppab-tdep.c: Deleted. Supplanted by hppa-tdep.c. * config/pa/hppabsd.mh (NATDEPFILES): Remove hppab-core.o. * config/pa/hppabsd.mt (TDEPFILES): hppab-tdep.o => hppa-tdep.o * config/pa/hppahpux.mt (TDEPFILES): hppab-tdep.o => hppa-tdep.o * config/pa/xm-hppab.h: #define SET_STACK_LIMIT_HUGE.
This commit is contained in:
Stu Grossman
parent
b5728692b4
commit
66a1aa071e
@ -107,11 +107,9 @@ h8300-tdep.c
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h8500-tdep.c
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hp300ux-nat.c
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hppa-pinsn.c
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hppab-core.c
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hppa-tdep.c
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hppab-nat.c
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hppab-tdep.c
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hppah-nat.c
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hppah-tdep.c
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i386-pinsn.c
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i386-stub.c
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i386-tdep.c
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@ -1,3 +1,18 @@
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Fri Apr 23 16:17:00 1993 Stu Grossman (grossman@cygnus.com)
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* Merge in HPPA/BSD patches from Utah:
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* defs.h: Add const to 2nd arg of psignal prototype.
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* hppah-tdep.c: Renamed to hppa-tdep.c 'cuz it's common code with
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BSD now.
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* hppab-core.c: Deleted. No longer useful.
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* hppab-nat.c: #include more files. Use PT_WUREGS, not
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PT_WRITE_U.
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* hppab-tdep.c: Deleted. Supplanted by hppa-tdep.c.
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* config/pa/hppabsd.mh (NATDEPFILES): Remove hppab-core.o.
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* config/pa/hppabsd.mt (TDEPFILES): hppab-tdep.o => hppa-tdep.o
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* config/pa/hppahpux.mt (TDEPFILES): hppab-tdep.o => hppa-tdep.o
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* config/pa/xm-hppab.h: #define SET_STACK_LIMIT_HUGE.
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Fri Apr 23 10:34:02 1993 Stu Grossman (grossman@cygnus.com)
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* Fix two bugs found by deja-gnu. One is the incorrect reporting
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@ -2,4 +2,4 @@
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XDEPFILES=
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XM_FILE= xm-hppab.h
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NAT_FILE= nm-hppab.h
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NATDEPFILES= hppab-nat.o coredep.o corelow.o exec.o hppab-core.o
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NATDEPFILES= hppab-nat.o coredep.o corelow.o exec.o
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@ -1,4 +1,4 @@
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# TARGET: HP PA-RISC running bsd
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TDEPFILES= hppa-pinsn.o hppab-tdep.o
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TDEPFILES= hppa-pinsn.o hppa-tdep.o
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TM_FILE= tm-hppab.h
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@ -40,3 +40,5 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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# define SEEK_CUR 1 /* Set file pointer to current plus "offset" */
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# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
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#endif /* SEEK_SET */
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#define SET_STACK_LIMIT_HUGE
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938
gdb/hppa-tdep.c
Normal file
938
gdb/hppa-tdep.c
Normal file
@ -0,0 +1,938 @@
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/* Machine-dependent code which would otherwise be in inflow.c and core.c,
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for GDB, the GNU debugger. This code is for the HP PA-RISC cpu.
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Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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Contributed by the Center for Software Science at the
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University of Utah (pa-gdb-bugs@cs.utah.edu).
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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "value.h"
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/* For argument passing to the inferior */
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#include "symtab.h"
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#ifdef USG
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#include <sys/types.h>
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#endif
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#ifdef COFF_ENCAPSULATE
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#include "a.out.encap.h"
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#else
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#include <a.out.h>
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#endif
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#ifndef N_SET_MAGIC
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#define N_SET_MAGIC(exec, val) ((exec).a_magic = (val))
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#endif
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/*#include <sys/user.h> After a.out.h */
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <machine/psl.h>
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#include "wait.h"
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#include "gdbcore.h"
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#include "gdbcmd.h"
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#include "target.h"
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#include "symfile.h"
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#include "objfiles.h"
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static int restore_pc_queue PARAMS ((struct frame_saved_regs *fsr));
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static int hppa_alignof PARAMS ((struct type *arg));
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/* Routines to extract various sized constants out of hppa
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instructions. */
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/* This assumes that no garbage lies outside of the lower bits of
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value. */
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int
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sign_extend (val, bits)
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unsigned val, bits;
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{
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return (int)(val >> bits - 1 ? (-1 << bits) | val : val);
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}
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/* For many immediate values the sign bit is the low bit! */
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int
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low_sign_extend (val, bits)
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unsigned val, bits;
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{
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return (int)((val & 0x1 ? (-1 << (bits - 1)) : 0) | val >> 1);
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}
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/* extract the immediate field from a ld{bhw}s instruction */
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unsigned
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get_field (val, from, to)
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unsigned val, from, to;
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{
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val = val >> 31 - to;
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return val & ((1 << 32 - from) - 1);
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}
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unsigned
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set_field (val, from, to, new_val)
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unsigned *val, from, to;
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{
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unsigned mask = ~((1 << (to - from + 1)) << (31 - from));
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return *val = *val & mask | (new_val << (31 - from));
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}
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/* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
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extract_3 (word)
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unsigned word;
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{
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return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
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}
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extract_5_load (word)
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unsigned word;
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{
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return low_sign_extend (word >> 16 & MASK_5, 5);
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}
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/* extract the immediate field from a st{bhw}s instruction */
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int
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extract_5_store (word)
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unsigned word;
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{
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return low_sign_extend (word & MASK_5, 5);
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}
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/* extract an 11 bit immediate field */
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int
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extract_11 (word)
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unsigned word;
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{
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return low_sign_extend (word & MASK_11, 11);
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}
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/* extract a 14 bit immediate field */
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int
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extract_14 (word)
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unsigned word;
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{
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return low_sign_extend (word & MASK_14, 14);
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}
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/* deposit a 14 bit constant in a word */
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unsigned
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deposit_14 (opnd, word)
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int opnd;
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unsigned word;
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{
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unsigned sign = (opnd < 0 ? 1 : 0);
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return word | ((unsigned)opnd << 1 & MASK_14) | sign;
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}
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/* extract a 21 bit constant */
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int
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extract_21 (word)
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unsigned word;
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{
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int val;
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word &= MASK_21;
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word <<= 11;
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val = GET_FIELD (word, 20, 20);
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val <<= 11;
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val |= GET_FIELD (word, 9, 19);
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val <<= 2;
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val |= GET_FIELD (word, 5, 6);
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val <<= 5;
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val |= GET_FIELD (word, 0, 4);
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val <<= 2;
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val |= GET_FIELD (word, 7, 8);
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return sign_extend (val, 21) << 11;
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}
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/* deposit a 21 bit constant in a word. Although 21 bit constants are
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usually the top 21 bits of a 32 bit constant, we assume that only
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the low 21 bits of opnd are relevant */
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||||
unsigned
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deposit_21 (opnd, word)
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unsigned opnd, word;
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{
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unsigned val = 0;
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val |= GET_FIELD (opnd, 11 + 14, 11 + 18);
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val <<= 2;
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val |= GET_FIELD (opnd, 11 + 12, 11 + 13);
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val <<= 2;
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val |= GET_FIELD (opnd, 11 + 19, 11 + 20);
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val <<= 11;
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val |= GET_FIELD (opnd, 11 + 1, 11 + 11);
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val <<= 1;
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||||
val |= GET_FIELD (opnd, 11 + 0, 11 + 0);
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return word | val;
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}
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||||
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||||
/* extract a 12 bit constant from branch instructions */
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||||
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||||
int
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||||
extract_12 (word)
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||||
unsigned word;
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||||
{
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||||
return sign_extend (GET_FIELD (word, 19, 28) |
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||||
GET_FIELD (word, 29, 29) << 10 |
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||||
(word & 0x1) << 11, 12) << 2;
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||||
}
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||||
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||||
/* extract a 17 bit constant from branch instructions, returning the
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||||
19 bit signed value. */
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||||
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||||
int
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||||
extract_17 (word)
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||||
unsigned word;
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||||
{
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||||
return sign_extend (GET_FIELD (word, 19, 28) |
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||||
GET_FIELD (word, 29, 29) << 10 |
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||||
GET_FIELD (word, 11, 15) << 11 |
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||||
(word & 0x1) << 16, 17) << 2;
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||||
}
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||||
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||||
static int use_unwind = 0;
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||||
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||||
/* Lookup the unwind (stack backtrace) info for the given PC. We search all
|
||||
of the objfiles seeking the unwind table entry for this PC. Each objfile
|
||||
contains a sorted list of struct unwind_table_entry. Since we do a binary
|
||||
search of the unwind tables, we depend upon them to be sorted. */
|
||||
|
||||
static struct unwind_table_entry *
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||||
find_unwind_entry(pc)
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||||
CORE_ADDR pc;
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||||
{
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||||
int first, middle, last;
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||||
struct objfile *objfile;
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||||
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||||
ALL_OBJFILES (objfile)
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||||
{
|
||||
struct obj_unwind_info *ui;
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||||
|
||||
ui = OBJ_UNWIND_INFO (objfile);
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||||
|
||||
if (!ui)
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||||
continue;
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||||
|
||||
/* First, check the cache */
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||||
|
||||
if (ui->cache
|
||||
&& pc >= ui->cache->region_start
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||||
&& pc <= ui->cache->region_end)
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||||
return ui->cache;
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||||
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||||
/* Not in the cache, do a binary search */
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||||
|
||||
first = 0;
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||||
last = ui->last;
|
||||
|
||||
while (first <= last)
|
||||
{
|
||||
middle = (first + last) / 2;
|
||||
if (pc >= ui->table[middle].region_start
|
||||
&& pc <= ui->table[middle].region_end)
|
||||
{
|
||||
ui->cache = &ui->table[middle];
|
||||
return &ui->table[middle];
|
||||
}
|
||||
|
||||
if (pc < ui->table[middle].region_start)
|
||||
last = middle - 1;
|
||||
else
|
||||
first = middle + 1;
|
||||
}
|
||||
} /* ALL_OBJFILES() */
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int
|
||||
find_return_regnum(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
struct unwind_table_entry *u;
|
||||
|
||||
u = find_unwind_entry (pc);
|
||||
|
||||
if (!u)
|
||||
return RP_REGNUM;
|
||||
|
||||
if (u->Millicode)
|
||||
return 31;
|
||||
|
||||
return RP_REGNUM;
|
||||
}
|
||||
|
||||
int
|
||||
find_proc_framesize(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
struct unwind_table_entry *u;
|
||||
|
||||
if (!use_unwind)
|
||||
return -1;
|
||||
|
||||
u = find_unwind_entry (pc);
|
||||
|
||||
if (!u)
|
||||
return -1;
|
||||
|
||||
return u->Total_frame_size << 3;
|
||||
}
|
||||
|
||||
int
|
||||
rp_saved(pc)
|
||||
{
|
||||
struct unwind_table_entry *u;
|
||||
|
||||
u = find_unwind_entry (pc);
|
||||
|
||||
if (!u)
|
||||
return 0;
|
||||
|
||||
if (u->Save_RP)
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
saved_pc_after_call (frame)
|
||||
FRAME frame;
|
||||
{
|
||||
int ret_regnum;
|
||||
|
||||
ret_regnum = find_return_regnum (get_frame_pc (frame));
|
||||
|
||||
return read_register (ret_regnum) & ~0x3;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
frame_saved_pc (frame)
|
||||
FRAME frame;
|
||||
{
|
||||
CORE_ADDR pc = get_frame_pc (frame);
|
||||
|
||||
if (frameless_look_for_prologue (frame))
|
||||
{
|
||||
int ret_regnum;
|
||||
|
||||
ret_regnum = find_return_regnum (pc);
|
||||
|
||||
return read_register (ret_regnum) & ~0x3;
|
||||
}
|
||||
else if (rp_saved (pc))
|
||||
return read_memory_integer (frame->frame - 20, 4) & ~0x3;
|
||||
else
|
||||
return read_register (RP_REGNUM) & ~0x3;
|
||||
}
|
||||
|
||||
/* We need to correct the PC and the FP for the outermost frame when we are
|
||||
in a system call. */
|
||||
|
||||
void
|
||||
init_extra_frame_info (fromleaf, frame)
|
||||
int fromleaf;
|
||||
struct frame_info *frame;
|
||||
{
|
||||
int flags;
|
||||
int framesize;
|
||||
|
||||
if (frame->next) /* Only do this for outermost frame */
|
||||
return;
|
||||
|
||||
flags = read_register (FLAGS_REGNUM);
|
||||
if (flags & 2) /* In system call? */
|
||||
frame->pc = read_register (31) & ~0x3;
|
||||
|
||||
/* The outermost frame is always derived from PC-framesize */
|
||||
framesize = find_proc_framesize(frame->pc);
|
||||
if (framesize == -1)
|
||||
frame->frame = read_register (FP_REGNUM);
|
||||
else
|
||||
frame->frame = read_register (SP_REGNUM) - framesize;
|
||||
|
||||
if (!frameless_look_for_prologue (frame)) /* Frameless? */
|
||||
return; /* No, quit now */
|
||||
|
||||
/* For frameless functions, we need to look at the caller's frame */
|
||||
framesize = find_proc_framesize(FRAME_SAVED_PC(frame));
|
||||
if (framesize != -1)
|
||||
frame->frame -= framesize;
|
||||
}
|
||||
|
||||
FRAME_ADDR
|
||||
frame_chain (frame)
|
||||
struct frame_info *frame;
|
||||
{
|
||||
int framesize;
|
||||
|
||||
framesize = find_proc_framesize(FRAME_SAVED_PC(frame));
|
||||
|
||||
if (framesize != -1)
|
||||
return frame->frame - framesize;
|
||||
|
||||
return read_memory_integer (frame->frame, 4);
|
||||
}
|
||||
|
||||
/* To see if a frame chain is valid, see if the caller looks like it
|
||||
was compiled with gcc. */
|
||||
|
||||
int
|
||||
frame_chain_valid (chain, thisframe)
|
||||
FRAME_ADDR chain;
|
||||
FRAME thisframe;
|
||||
{
|
||||
struct minimal_symbol *msym;
|
||||
|
||||
if (!chain)
|
||||
return 0;
|
||||
|
||||
msym = lookup_minimal_symbol_by_pc (FRAME_SAVED_PC (thisframe));
|
||||
|
||||
if (msym
|
||||
&& (strcmp (SYMBOL_NAME (msym), "_start") == 0))
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
|
||||
#if 0
|
||||
/* Some helper functions. gcc_p returns 1 if the function beginning at
|
||||
pc appears to have been compiled with gcc. hpux_cc_p returns 1 if
|
||||
fn was compiled with hpux cc. gcc functions look like :
|
||||
|
||||
stw rp,-0x14(sp) ; optional
|
||||
or r4,r0,r1
|
||||
or sp,r0,r4
|
||||
stwm r1,framesize(sp)
|
||||
|
||||
hpux cc functions look like:
|
||||
|
||||
stw rp,-0x14(sp) ; optional.
|
||||
stwm r3,framesiz(sp)
|
||||
*/
|
||||
|
||||
gcc_p (pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
if (read_memory_integer (pc, 4) == 0x6BC23FD9)
|
||||
pc = pc + 4;
|
||||
|
||||
if (read_memory_integer (pc, 4) == 0x8040241
|
||||
&& read_memory_integer (pc + 4, 4) == 0x81E0244)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* These functions deal with saving and restoring register state
|
||||
* around a function call in the inferior. They keep the stack
|
||||
* double-word aligned; eventually, on an hp700, the stack will have
|
||||
* to be aligned to a 64-byte boundary.
|
||||
*/
|
||||
|
||||
int
|
||||
push_dummy_frame ()
|
||||
{
|
||||
register CORE_ADDR sp;
|
||||
register int regnum;
|
||||
int int_buffer;
|
||||
double freg_buffer;
|
||||
|
||||
/* Space for "arguments"; the RP goes in here. */
|
||||
sp = read_register (SP_REGNUM) + 48;
|
||||
int_buffer = read_register (RP_REGNUM) | 0x3;
|
||||
write_memory (sp - 20, (char *)&int_buffer, 4);
|
||||
|
||||
int_buffer = read_register (FP_REGNUM);
|
||||
write_memory (sp, (char *)&int_buffer, 4);
|
||||
|
||||
write_register (FP_REGNUM, sp);
|
||||
|
||||
sp += 8;
|
||||
|
||||
for (regnum = 1; regnum < 32; regnum++)
|
||||
if (regnum != RP_REGNUM && regnum != FP_REGNUM)
|
||||
sp = push_word (sp, read_register (regnum));
|
||||
|
||||
sp += 4;
|
||||
|
||||
for (regnum = FP0_REGNUM; regnum < NUM_REGS; regnum++)
|
||||
{
|
||||
read_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
|
||||
sp = push_bytes (sp, (char *)&freg_buffer, 8);
|
||||
}
|
||||
sp = push_word (sp, read_register (IPSW_REGNUM));
|
||||
sp = push_word (sp, read_register (SAR_REGNUM));
|
||||
sp = push_word (sp, read_register (PCOQ_HEAD_REGNUM));
|
||||
sp = push_word (sp, read_register (PCSQ_HEAD_REGNUM));
|
||||
sp = push_word (sp, read_register (PCOQ_TAIL_REGNUM));
|
||||
sp = push_word (sp, read_register (PCSQ_TAIL_REGNUM));
|
||||
write_register (SP_REGNUM, sp);
|
||||
}
|
||||
|
||||
find_dummy_frame_regs (frame, frame_saved_regs)
|
||||
struct frame_info *frame;
|
||||
struct frame_saved_regs *frame_saved_regs;
|
||||
{
|
||||
CORE_ADDR fp = frame->frame;
|
||||
int i;
|
||||
|
||||
frame_saved_regs->regs[RP_REGNUM] = fp - 20 & ~0x3;
|
||||
frame_saved_regs->regs[FP_REGNUM] = fp;
|
||||
frame_saved_regs->regs[1] = fp + 8;
|
||||
frame_saved_regs->regs[3] = fp + 12;
|
||||
|
||||
for (fp += 16, i = 5; i < 32; fp += 4, i++)
|
||||
frame_saved_regs->regs[i] = fp;
|
||||
|
||||
fp += 4;
|
||||
for (i = FP0_REGNUM; i < NUM_REGS; i++, fp += 8)
|
||||
frame_saved_regs->regs[i] = fp;
|
||||
|
||||
frame_saved_regs->regs[IPSW_REGNUM] = fp;
|
||||
fp += 4;
|
||||
frame_saved_regs->regs[SAR_REGNUM] = fp;
|
||||
fp += 4;
|
||||
frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp;
|
||||
fp +=4;
|
||||
frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp;
|
||||
fp +=4;
|
||||
frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp;
|
||||
fp +=4;
|
||||
frame_saved_regs->regs[PCSQ_TAIL_REGNUM] = fp;
|
||||
}
|
||||
|
||||
int
|
||||
hppa_pop_frame ()
|
||||
{
|
||||
register FRAME frame = get_current_frame ();
|
||||
register CORE_ADDR fp;
|
||||
register int regnum;
|
||||
struct frame_saved_regs fsr;
|
||||
struct frame_info *fi;
|
||||
double freg_buffer;
|
||||
|
||||
fi = get_frame_info (frame);
|
||||
fp = fi->frame;
|
||||
get_frame_saved_regs (fi, &fsr);
|
||||
|
||||
if (fsr.regs[IPSW_REGNUM]) /* Restoring a call dummy frame */
|
||||
restore_pc_queue (&fsr);
|
||||
|
||||
for (regnum = 31; regnum > 0; regnum--)
|
||||
if (fsr.regs[regnum])
|
||||
write_register (regnum, read_memory_integer (fsr.regs[regnum], 4));
|
||||
|
||||
for (regnum = NUM_REGS - 1; regnum >= FP0_REGNUM ; regnum--)
|
||||
if (fsr.regs[regnum])
|
||||
{
|
||||
read_memory (fsr.regs[regnum], (char *)&freg_buffer, 8);
|
||||
write_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
|
||||
}
|
||||
|
||||
if (fsr.regs[IPSW_REGNUM])
|
||||
write_register (IPSW_REGNUM,
|
||||
read_memory_integer (fsr.regs[IPSW_REGNUM], 4));
|
||||
|
||||
if (fsr.regs[SAR_REGNUM])
|
||||
write_register (SAR_REGNUM,
|
||||
read_memory_integer (fsr.regs[SAR_REGNUM], 4));
|
||||
|
||||
if (fsr.regs[PCOQ_TAIL_REGNUM])
|
||||
write_register (PCOQ_TAIL_REGNUM,
|
||||
read_memory_integer (fsr.regs[PCOQ_TAIL_REGNUM], 4));
|
||||
|
||||
write_register (FP_REGNUM, read_memory_integer (fp, 4));
|
||||
|
||||
if (fsr.regs[IPSW_REGNUM]) /* call dummy */
|
||||
write_register (SP_REGNUM, fp - 48);
|
||||
else
|
||||
write_register (SP_REGNUM, fp);
|
||||
|
||||
flush_cached_frames ();
|
||||
set_current_frame (create_new_frame (read_register (FP_REGNUM),
|
||||
read_pc ()));
|
||||
}
|
||||
|
||||
/*
|
||||
* After returning to a dummy on the stack, restore the instruction
|
||||
* queue space registers. */
|
||||
|
||||
static int
|
||||
restore_pc_queue (fsr)
|
||||
struct frame_saved_regs *fsr;
|
||||
{
|
||||
CORE_ADDR pc = read_pc ();
|
||||
CORE_ADDR new_pc = read_memory_integer (fsr->regs[PCOQ_HEAD_REGNUM], 4);
|
||||
int pid;
|
||||
WAITTYPE w;
|
||||
int insn_count;
|
||||
|
||||
/* Advance past break instruction in the call dummy. */
|
||||
write_register (PCOQ_HEAD_REGNUM, pc + 4);
|
||||
write_register (PCOQ_TAIL_REGNUM, pc + 8);
|
||||
|
||||
/*
|
||||
* HPUX doesn't let us set the space registers or the space
|
||||
* registers of the PC queue through ptrace. Boo, hiss.
|
||||
* Conveniently, the call dummy has this sequence of instructions
|
||||
* after the break:
|
||||
* mtsp r21, sr0
|
||||
* ble,n 0(sr0, r22)
|
||||
*
|
||||
* So, load up the registers and single step until we are in the
|
||||
* right place.
|
||||
*/
|
||||
|
||||
write_register (21, read_memory_integer (fsr->regs[PCSQ_HEAD_REGNUM], 4));
|
||||
write_register (22, new_pc);
|
||||
|
||||
for (insn_count = 0; insn_count < 3; insn_count++)
|
||||
{
|
||||
resume (1, 0);
|
||||
target_wait(&w);
|
||||
|
||||
if (!WIFSTOPPED (w))
|
||||
{
|
||||
stop_signal = WTERMSIG (w);
|
||||
terminal_ours_for_output ();
|
||||
printf ("\nProgram terminated with signal %d, %s\n",
|
||||
stop_signal, safe_strsignal (stop_signal));
|
||||
fflush (stdout);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
fetch_inferior_registers (-1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
hppa_push_arguments (nargs, args, sp, struct_return, struct_addr)
|
||||
int nargs;
|
||||
value *args;
|
||||
CORE_ADDR sp;
|
||||
int struct_return;
|
||||
CORE_ADDR struct_addr;
|
||||
{
|
||||
/* array of arguments' offsets */
|
||||
int *offset = (int *)alloca(nargs);
|
||||
int cum = 0;
|
||||
int i, alignment;
|
||||
|
||||
for (i = 0; i < nargs; i++)
|
||||
{
|
||||
/* Coerce chars to int & float to double if necessary */
|
||||
args[i] = value_arg_coerce (args[i]);
|
||||
|
||||
cum += TYPE_LENGTH (VALUE_TYPE (args[i]));
|
||||
|
||||
/* value must go at proper alignment. Assume alignment is a
|
||||
power of two.*/
|
||||
alignment = hppa_alignof (VALUE_TYPE (args[i]));
|
||||
if (cum % alignment)
|
||||
cum = (cum + alignment) & -alignment;
|
||||
offset[i] = -cum;
|
||||
}
|
||||
sp += min ((cum + 7) & -8, 16);
|
||||
|
||||
for (i = 0; i < nargs; i++)
|
||||
write_memory (sp + offset[i], VALUE_CONTENTS (args[i]),
|
||||
TYPE_LENGTH (VALUE_TYPE (args[i])));
|
||||
|
||||
if (struct_return)
|
||||
write_register (28, struct_addr);
|
||||
return sp + 32;
|
||||
}
|
||||
|
||||
/*
|
||||
* Insert the specified number of args and function address
|
||||
* into a call sequence of the above form stored at DUMMYNAME.
|
||||
*
|
||||
* On the hppa we need to call the stack dummy through $$dyncall.
|
||||
* Therefore our version of FIX_CALL_DUMMY takes an extra argument,
|
||||
* real_pc, which is the location where gdb should start up the
|
||||
* inferior to do the function call.
|
||||
*/
|
||||
|
||||
CORE_ADDR
|
||||
hppa_fix_call_dummy (dummy, pc, fun, nargs, args, type, gcc_p)
|
||||
REGISTER_TYPE *dummy;
|
||||
CORE_ADDR pc;
|
||||
CORE_ADDR fun;
|
||||
int nargs;
|
||||
value *args;
|
||||
struct type *type;
|
||||
int gcc_p;
|
||||
{
|
||||
CORE_ADDR dyncall_addr, sr4export_addr;
|
||||
struct minimal_symbol *msymbol;
|
||||
|
||||
msymbol = lookup_minimal_symbol ("$$dyncall", (struct objfile *) NULL);
|
||||
if (msymbol == NULL)
|
||||
error ("Can't find an address for $$dyncall trampoline");
|
||||
|
||||
dyncall_addr = SYMBOL_VALUE_ADDRESS (msymbol);
|
||||
|
||||
msymbol = lookup_minimal_symbol ("_sr4export", (struct objfile *) NULL);
|
||||
if (msymbol == NULL)
|
||||
error ("Can't find an address for _sr4export trampoline");
|
||||
|
||||
sr4export_addr = SYMBOL_VALUE_ADDRESS (msymbol);
|
||||
|
||||
dummy[9] = deposit_21 (fun >> 11, dummy[9]);
|
||||
dummy[10] = deposit_14 (fun & MASK_11, dummy[10]);
|
||||
dummy[12] = deposit_21 (sr4export_addr >> 11, dummy[12]);
|
||||
dummy[13] = deposit_14 (sr4export_addr & MASK_11, dummy[13]);
|
||||
|
||||
write_register (22, pc);
|
||||
|
||||
return dyncall_addr;
|
||||
}
|
||||
|
||||
/* return the alignment of a type in bytes. Structures have the maximum
|
||||
alignment required by their fields. */
|
||||
|
||||
static int
|
||||
hppa_alignof (arg)
|
||||
struct type *arg;
|
||||
{
|
||||
int max_align, align, i;
|
||||
switch (TYPE_CODE (arg))
|
||||
{
|
||||
case TYPE_CODE_PTR:
|
||||
case TYPE_CODE_INT:
|
||||
case TYPE_CODE_FLT:
|
||||
return TYPE_LENGTH (arg);
|
||||
case TYPE_CODE_ARRAY:
|
||||
return hppa_alignof (TYPE_FIELD_TYPE (arg, 0));
|
||||
case TYPE_CODE_STRUCT:
|
||||
case TYPE_CODE_UNION:
|
||||
max_align = 2;
|
||||
for (i = 0; i < TYPE_NFIELDS (arg); i++)
|
||||
{
|
||||
/* Bit fields have no real alignment. */
|
||||
if (!TYPE_FIELD_BITPOS (arg, i))
|
||||
{
|
||||
align = hppa_alignof (TYPE_FIELD_TYPE (arg, i));
|
||||
max_align = max (max_align, align);
|
||||
}
|
||||
}
|
||||
return max_align;
|
||||
default:
|
||||
return 4;
|
||||
}
|
||||
}
|
||||
|
||||
/* Print the register regnum, or all registers if regnum is -1 */
|
||||
|
||||
pa_do_registers_info (regnum, fpregs)
|
||||
int regnum;
|
||||
int fpregs;
|
||||
{
|
||||
char raw_regs [REGISTER_BYTES];
|
||||
int i;
|
||||
|
||||
for (i = 0; i < NUM_REGS; i++)
|
||||
read_relative_register_raw_bytes (i, raw_regs + REGISTER_BYTE (i));
|
||||
if (regnum == -1)
|
||||
pa_print_registers (raw_regs, regnum, fpregs);
|
||||
else if (regnum < FP0_REGNUM)
|
||||
printf ("%s %x\n", reg_names[regnum], *(long *)(raw_regs +
|
||||
REGISTER_BYTE (regnum)));
|
||||
else
|
||||
pa_print_fp_reg (regnum);
|
||||
}
|
||||
|
||||
pa_print_registers (raw_regs, regnum, fpregs)
|
||||
char *raw_regs;
|
||||
int regnum;
|
||||
int fpregs;
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 18; i++)
|
||||
printf ("%8.8s: %8x %8.8s: %8x %8.8s: %8x %8.8s: %8x\n",
|
||||
reg_names[i],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i)),
|
||||
reg_names[i + 18],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i + 18)),
|
||||
reg_names[i + 36],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i + 36)),
|
||||
reg_names[i + 54],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i + 54)));
|
||||
|
||||
if (fpregs)
|
||||
for (i = 72; i < NUM_REGS; i++)
|
||||
pa_print_fp_reg (i);
|
||||
}
|
||||
|
||||
pa_print_fp_reg (i)
|
||||
int i;
|
||||
{
|
||||
unsigned char raw_buffer[MAX_REGISTER_RAW_SIZE];
|
||||
unsigned char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
|
||||
REGISTER_TYPE val;
|
||||
|
||||
/* Get the data in raw format, then convert also to virtual format. */
|
||||
read_relative_register_raw_bytes (i, raw_buffer);
|
||||
REGISTER_CONVERT_TO_VIRTUAL (i, raw_buffer, virtual_buffer);
|
||||
|
||||
fputs_filtered (reg_names[i], stdout);
|
||||
print_spaces_filtered (15 - strlen (reg_names[i]), stdout);
|
||||
|
||||
val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, stdout, 0,
|
||||
1, 0, Val_pretty_default);
|
||||
printf_filtered ("\n");
|
||||
}
|
||||
|
||||
/* Function calls that pass into a new compilation unit must pass through a
|
||||
small piece of code that does long format (`external' in HPPA parlance)
|
||||
jumps. We figure out where the trampoline is going to end up, and return
|
||||
the PC of the final destination. If we aren't in a trampoline, we just
|
||||
return NULL.
|
||||
|
||||
For computed calls, we just extract the new PC from r22. */
|
||||
|
||||
CORE_ADDR
|
||||
skip_trampoline_code (pc, name)
|
||||
CORE_ADDR pc;
|
||||
char *name;
|
||||
{
|
||||
long inst0, inst1;
|
||||
static CORE_ADDR dyncall = 0;
|
||||
struct minimal_symbol *msym;
|
||||
|
||||
/* FIXME XXX - dyncall must be initialized whenever we get a new exec file */
|
||||
|
||||
if (!dyncall)
|
||||
{
|
||||
msym = lookup_minimal_symbol ("$$dyncall", NULL);
|
||||
if (msym)
|
||||
dyncall = SYMBOL_VALUE_ADDRESS (msym);
|
||||
else
|
||||
dyncall = -1;
|
||||
}
|
||||
|
||||
if (pc == dyncall)
|
||||
return (CORE_ADDR)(read_register (22) & ~0x3);
|
||||
|
||||
inst0 = read_memory_integer (pc, 4);
|
||||
inst1 = read_memory_integer (pc+4, 4);
|
||||
|
||||
if ( (inst0 & 0xffe00000) == 0x20200000 /* ldil xxx, r1 */
|
||||
&& (inst1 & 0xffe0e002) == 0xe0202002) /* be,n yyy(sr4, r1) */
|
||||
pc = extract_21 (inst0) + extract_17 (inst1);
|
||||
else
|
||||
pc = (CORE_ADDR)NULL;
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
/* Advance PC across any function entry prologue instructions
|
||||
to reach some "real" code. */
|
||||
|
||||
/* skip (stw rp, -20(0,sp)); copy 4,1; copy sp, 4; stwm 1,framesize(sp)
|
||||
for gcc, or (stw rp, -20(0,sp); stwm 1, framesize(sp) for hcc */
|
||||
|
||||
CORE_ADDR
|
||||
skip_prologue(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
int inst;
|
||||
int status;
|
||||
|
||||
status = target_read_memory (pc, (char *)&inst, 4);
|
||||
SWAP_TARGET_AND_HOST (&inst, sizeof (inst));
|
||||
if (status != 0)
|
||||
return pc;
|
||||
|
||||
if (inst == 0x6BC23FD9) /* stw rp,-20(sp) */
|
||||
{
|
||||
if (read_memory_integer (pc + 4, 4) == 0x8040241) /* copy r4,r1 */
|
||||
pc += 16;
|
||||
else if ((read_memory_integer (pc + 4, 4) & ~MASK_14) == 0x68810000) /* stw r1,(r4) */
|
||||
pc += 8;
|
||||
}
|
||||
else if (read_memory_integer (pc, 4) == 0x8040241) /* copy r4,r1 */
|
||||
pc += 12;
|
||||
else if ((read_memory_integer (pc, 4) & ~MASK_14) == 0x68810000) /* stw r1,(r4) */
|
||||
pc += 4;
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
static void
|
||||
unwind_command (exp, from_tty)
|
||||
char *exp;
|
||||
int from_tty;
|
||||
{
|
||||
CORE_ADDR address;
|
||||
union
|
||||
{
|
||||
int *foo;
|
||||
struct unwind_table_entry *u;
|
||||
} xxx;
|
||||
|
||||
/* If we have an expression, evaluate it and use it as the address. */
|
||||
|
||||
if (exp != 0 && *exp != 0)
|
||||
address = parse_and_eval_address (exp);
|
||||
else
|
||||
return;
|
||||
|
||||
xxx.u = find_unwind_entry (address);
|
||||
|
||||
if (!xxx.u)
|
||||
{
|
||||
printf ("Can't find unwind table entry for PC 0x%x\n", address);
|
||||
return;
|
||||
}
|
||||
|
||||
printf ("%08x\n%08X\n%08X\n%08X\n", xxx.foo[0], xxx.foo[1], xxx.foo[2],
|
||||
xxx.foo[3]);
|
||||
}
|
||||
|
||||
void
|
||||
_initialize_hppah_tdep ()
|
||||
{
|
||||
add_com ("unwind", class_obscure, unwind_command, "Print unwind info\n");
|
||||
add_show_from_set
|
||||
(add_set_cmd ("use_unwind", class_obscure, var_boolean,
|
||||
(char *)&use_unwind,
|
||||
"Set the usage of unwind info", &setlist),
|
||||
&showlist);
|
||||
}
|
||||
251
gdb/hppab-core.c
251
gdb/hppab-core.c
@ -1,251 +0,0 @@
|
||||
/* Machine-dependent code which would otherwise be in core.c
|
||||
for GDB, the GNU debugger. This code is for the HP PA-RISC cpu.
|
||||
Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
||||
|
||||
Contributed by the Center for Software Science at the
|
||||
University of Utah (pa-gdb-bugs@cs.utah.edu).
|
||||
|
||||
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#include "defs.h"
|
||||
#include "frame.h"
|
||||
#include "inferior.h"
|
||||
|
||||
#ifdef USG
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/dir.h>
|
||||
#include <signal.h>
|
||||
#include <sys/ioctl.h>
|
||||
/* #include <fcntl.h> Can we live without this? */
|
||||
|
||||
#ifndef hpux
|
||||
#include <a.out.h>
|
||||
#include <machine/pcb.h>
|
||||
#include <sys/time.h>
|
||||
#include "/usr/src/sys/hpux/hpux.h"
|
||||
#define USRSTACK 0x68FF3000
|
||||
#else
|
||||
#include <sys/user.h> /* After a.out.h */
|
||||
#endif
|
||||
|
||||
#include <sys/file.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/ptrace.h>
|
||||
|
||||
#ifndef hpux
|
||||
#undef USIZE
|
||||
#undef UPAGES
|
||||
|
||||
#define USIZE 3
|
||||
#define UPAGES 7
|
||||
#endif
|
||||
|
||||
extern int errno;
|
||||
|
||||
/* File names of core file and executable file. */
|
||||
|
||||
extern char *corefile;
|
||||
extern char *execfile;
|
||||
|
||||
/* Descriptors on which core file and executable file are open.
|
||||
Note that the execchan is closed when an inferior is created
|
||||
and reopened if the inferior dies or is killed. */
|
||||
|
||||
extern int corechan;
|
||||
extern int execchan;
|
||||
|
||||
/* Last modification time of executable file.
|
||||
Also used in source.c to compare against mtime of a source file. */
|
||||
|
||||
extern int exec_mtime;
|
||||
|
||||
/* Virtual addresses of bounds of the two areas of memory in the core file. */
|
||||
|
||||
extern CORE_ADDR data_start;
|
||||
extern CORE_ADDR data_end;
|
||||
extern CORE_ADDR stack_start;
|
||||
extern CORE_ADDR stack_end;
|
||||
|
||||
/* Virtual addresses of bounds of two areas of memory in the exec file.
|
||||
Note that the data area in the exec file is used only when there is no core file. */
|
||||
|
||||
extern CORE_ADDR text_start;
|
||||
extern CORE_ADDR text_end;
|
||||
|
||||
extern CORE_ADDR exec_data_start;
|
||||
extern CORE_ADDR exec_data_end;
|
||||
|
||||
/* Address in executable file of start of text area data. */
|
||||
|
||||
extern int text_offset;
|
||||
|
||||
/* Address in executable file of start of data area data. */
|
||||
|
||||
extern int exec_data_offset;
|
||||
|
||||
/* Address in core file of start of data area data. */
|
||||
|
||||
extern int data_offset;
|
||||
|
||||
/* Address in core file of start of stack area data. */
|
||||
|
||||
extern int stack_offset;
|
||||
|
||||
extern struct header file_hdr;
|
||||
extern struct som_exec_auxhdr exec_hdr;
|
||||
|
||||
extern int (*core_file_hook)();
|
||||
|
||||
#ifdef KERNELDEBUG
|
||||
|
||||
extern int kernel_debugging;
|
||||
extern int kernel_core_file_hook();
|
||||
|
||||
#endif
|
||||
|
||||
core_file_command (filename, from_tty)
|
||||
char *filename;
|
||||
int from_tty;
|
||||
{
|
||||
int val;
|
||||
extern char registers[];
|
||||
#ifdef KERNELDEBUG
|
||||
struct stat stb;
|
||||
#endif
|
||||
|
||||
/* Discard all vestiges of any previous core file
|
||||
and mark data and stack spaces as empty. */
|
||||
|
||||
if (corefile)
|
||||
free (corefile);
|
||||
corefile = 0;
|
||||
core_file_hook = 0;
|
||||
|
||||
if (corechan >= 0)
|
||||
close (corechan);
|
||||
corechan = -1;
|
||||
|
||||
data_start = 0;
|
||||
data_end = 0;
|
||||
stack_start = STACK_END_ADDR;
|
||||
stack_end = STACK_END_ADDR;
|
||||
|
||||
/* Now, if a new core file was specified, open it and digest it. */
|
||||
|
||||
if (filename)
|
||||
{
|
||||
filename = tilde_expand (filename);
|
||||
make_cleanup (free, filename);
|
||||
|
||||
if (have_inferior_p ())
|
||||
error ("To look at a core file, you must kill the inferior with \"kill\".");
|
||||
corechan = open (filename, O_RDONLY, 0);
|
||||
if (corechan < 0)
|
||||
perror_with_name (filename);
|
||||
|
||||
#ifdef KERNELDEBUG
|
||||
fstat(corechan, &stb);
|
||||
|
||||
if (kernel_debugging) {
|
||||
setup_kernel_debugging();
|
||||
core_file_hook = kernel_core_file_hook;
|
||||
set_kernel_boundaries();
|
||||
} else if ((stb.st_mode & S_IFMT) == S_IFCHR &&
|
||||
stb.st_rdev == makedev(2, 1)) {
|
||||
/* looking at /dev/kmem */
|
||||
data_offset = data_start = KERNBASE;
|
||||
data_end = ~0; /* XXX */
|
||||
stack_end = stack_start = data_end;
|
||||
set_kernel_boundaries();
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
/* HP PA-RISC style corefile. */
|
||||
#ifndef hpux
|
||||
struct hpuxuser u;
|
||||
#else
|
||||
struct user u;
|
||||
#endif
|
||||
|
||||
unsigned int reg_offset;
|
||||
|
||||
val = myread (corechan, &u, sizeof u);
|
||||
if (val < 0)
|
||||
perror_with_name ("Not a core file: reading upage");
|
||||
if (val != sizeof u)
|
||||
error ("Not a core file: could only read %d bytes", val);
|
||||
|
||||
/* We are depending on exec_file_command having been called
|
||||
previously to set exec_data_start. Since the executable
|
||||
and the core file share the same text segment, the address
|
||||
of the data segment will be the same in both. */
|
||||
data_start = exec_data_start;
|
||||
|
||||
data_end = data_start + NBPG * u.u_dsize;
|
||||
stack_start = USRSTACK; /* from sys/param.h */
|
||||
stack_end = stack_start + NBPG * u.u_ssize;
|
||||
data_offset = NBPG * UPAGES;
|
||||
stack_offset = NBPG * (UPAGES + u.u_dsize);
|
||||
|
||||
/* Some machines put an absolute address in here and some put
|
||||
the offset in the upage of the regs. */
|
||||
reg_offset = NBPG * USIZE;
|
||||
/* Read the register values out of the core file and store
|
||||
them where `read_register' will find them. */
|
||||
|
||||
{
|
||||
register int regno;
|
||||
|
||||
for (regno = 0; regno < NUM_REGS; regno++)
|
||||
{
|
||||
unsigned char buf[MAX_REGISTER_RAW_SIZE];
|
||||
|
||||
val = lseek (corechan, register_addr (regno, reg_offset), 0);
|
||||
if (val < 0
|
||||
|| (val = myread (corechan, buf, sizeof buf)) < 0)
|
||||
{
|
||||
char * buffer = (char *) alloca (strlen (reg_names[regno])
|
||||
+ 30);
|
||||
strcpy (buffer, "Reading register ");
|
||||
strcat (buffer, reg_names[regno]);
|
||||
|
||||
perror_with_name (buffer);
|
||||
}
|
||||
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
|
||||
buf[3] &= ~0x3;
|
||||
supply_register (regno, buf);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (filename[0] == '/')
|
||||
corefile = savestring (filename, strlen (filename));
|
||||
else
|
||||
{
|
||||
corefile = concat (current_directory, "/", filename);
|
||||
}
|
||||
|
||||
set_current_frame ( create_new_frame (read_register (FP_REGNUM),
|
||||
read_pc ()));
|
||||
select_frame (get_current_frame (), 0);
|
||||
validate_files ();
|
||||
}
|
||||
else if (from_tty)
|
||||
printf ("No core file now.\n");
|
||||
}
|
||||
@ -1,7 +1,7 @@
|
||||
/* Machine-dependent hooks for the unix child process stratum. This
|
||||
code is for the HP PA-RISC cpu.
|
||||
|
||||
Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
||||
Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
|
||||
|
||||
Contributed by the Center for Software Science at the
|
||||
University of Utah (pa-gdb-bugs@cs.utah.edu).
|
||||
@ -24,6 +24,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#include "defs.h"
|
||||
#include "inferior.h"
|
||||
#include "target.h"
|
||||
#include <sys/ptrace.h>
|
||||
|
||||
#ifndef PT_ATTACH
|
||||
#define PT_ATTACH PTRACE_ATTACH
|
||||
@ -239,7 +241,7 @@ store_inferior_registers (regno)
|
||||
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
|
||||
{
|
||||
errno = 0;
|
||||
ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
||||
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
||||
*(int *) ®isters[REGISTER_BYTE (regno) + i]);
|
||||
if (errno != 0)
|
||||
{
|
||||
@ -259,7 +261,7 @@ store_inferior_registers (regno)
|
||||
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
|
||||
{
|
||||
errno = 0;
|
||||
ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
||||
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
||||
*(int *) ®isters[REGISTER_BYTE (regno) + i]);
|
||||
if (errno != 0)
|
||||
{
|
||||
|
||||
1421
gdb/hppab-tdep.c
1421
gdb/hppab-tdep.c
File diff suppressed because it is too large
Load Diff
938
gdb/hppah-tdep.c
938
gdb/hppah-tdep.c
@ -1,938 +0,0 @@
|
||||
/* Machine-dependent code which would otherwise be in inflow.c and core.c,
|
||||
for GDB, the GNU debugger. This code is for the HP PA-RISC cpu.
|
||||
Copyright 1986, 1987, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
||||
|
||||
Contributed by the Center for Software Science at the
|
||||
University of Utah (pa-gdb-bugs@cs.utah.edu).
|
||||
|
||||
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
|
||||
#include "defs.h"
|
||||
#include "frame.h"
|
||||
#include "inferior.h"
|
||||
#include "value.h"
|
||||
|
||||
/* For argument passing to the inferior */
|
||||
#include "symtab.h"
|
||||
|
||||
#ifdef USG
|
||||
#include <sys/types.h>
|
||||
#endif
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/dir.h>
|
||||
#include <signal.h>
|
||||
#include <sys/ioctl.h>
|
||||
|
||||
#ifdef COFF_ENCAPSULATE
|
||||
#include "a.out.encap.h"
|
||||
#else
|
||||
#include <a.out.h>
|
||||
#endif
|
||||
#ifndef N_SET_MAGIC
|
||||
#define N_SET_MAGIC(exec, val) ((exec).a_magic = (val))
|
||||
#endif
|
||||
|
||||
/*#include <sys/user.h> After a.out.h */
|
||||
#include <sys/file.h>
|
||||
#include <sys/stat.h>
|
||||
#include <machine/psl.h>
|
||||
#include "wait.h"
|
||||
|
||||
#include "gdbcore.h"
|
||||
#include "gdbcmd.h"
|
||||
#include "target.h"
|
||||
#include "symfile.h"
|
||||
#include "objfiles.h"
|
||||
|
||||
static int restore_pc_queue PARAMS ((struct frame_saved_regs *fsr));
|
||||
static int hppa_alignof PARAMS ((struct type *arg));
|
||||
|
||||
|
||||
/* Routines to extract various sized constants out of hppa
|
||||
instructions. */
|
||||
|
||||
/* This assumes that no garbage lies outside of the lower bits of
|
||||
value. */
|
||||
|
||||
int
|
||||
sign_extend (val, bits)
|
||||
unsigned val, bits;
|
||||
{
|
||||
return (int)(val >> bits - 1 ? (-1 << bits) | val : val);
|
||||
}
|
||||
|
||||
/* For many immediate values the sign bit is the low bit! */
|
||||
|
||||
int
|
||||
low_sign_extend (val, bits)
|
||||
unsigned val, bits;
|
||||
{
|
||||
return (int)((val & 0x1 ? (-1 << (bits - 1)) : 0) | val >> 1);
|
||||
}
|
||||
/* extract the immediate field from a ld{bhw}s instruction */
|
||||
|
||||
unsigned
|
||||
get_field (val, from, to)
|
||||
unsigned val, from, to;
|
||||
{
|
||||
val = val >> 31 - to;
|
||||
return val & ((1 << 32 - from) - 1);
|
||||
}
|
||||
|
||||
unsigned
|
||||
set_field (val, from, to, new_val)
|
||||
unsigned *val, from, to;
|
||||
{
|
||||
unsigned mask = ~((1 << (to - from + 1)) << (31 - from));
|
||||
return *val = *val & mask | (new_val << (31 - from));
|
||||
}
|
||||
|
||||
/* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
|
||||
|
||||
extract_3 (word)
|
||||
unsigned word;
|
||||
{
|
||||
return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
|
||||
}
|
||||
|
||||
extract_5_load (word)
|
||||
unsigned word;
|
||||
{
|
||||
return low_sign_extend (word >> 16 & MASK_5, 5);
|
||||
}
|
||||
|
||||
/* extract the immediate field from a st{bhw}s instruction */
|
||||
|
||||
int
|
||||
extract_5_store (word)
|
||||
unsigned word;
|
||||
{
|
||||
return low_sign_extend (word & MASK_5, 5);
|
||||
}
|
||||
|
||||
/* extract an 11 bit immediate field */
|
||||
|
||||
int
|
||||
extract_11 (word)
|
||||
unsigned word;
|
||||
{
|
||||
return low_sign_extend (word & MASK_11, 11);
|
||||
}
|
||||
|
||||
/* extract a 14 bit immediate field */
|
||||
|
||||
int
|
||||
extract_14 (word)
|
||||
unsigned word;
|
||||
{
|
||||
return low_sign_extend (word & MASK_14, 14);
|
||||
}
|
||||
|
||||
/* deposit a 14 bit constant in a word */
|
||||
|
||||
unsigned
|
||||
deposit_14 (opnd, word)
|
||||
int opnd;
|
||||
unsigned word;
|
||||
{
|
||||
unsigned sign = (opnd < 0 ? 1 : 0);
|
||||
|
||||
return word | ((unsigned)opnd << 1 & MASK_14) | sign;
|
||||
}
|
||||
|
||||
/* extract a 21 bit constant */
|
||||
|
||||
int
|
||||
extract_21 (word)
|
||||
unsigned word;
|
||||
{
|
||||
int val;
|
||||
|
||||
word &= MASK_21;
|
||||
word <<= 11;
|
||||
val = GET_FIELD (word, 20, 20);
|
||||
val <<= 11;
|
||||
val |= GET_FIELD (word, 9, 19);
|
||||
val <<= 2;
|
||||
val |= GET_FIELD (word, 5, 6);
|
||||
val <<= 5;
|
||||
val |= GET_FIELD (word, 0, 4);
|
||||
val <<= 2;
|
||||
val |= GET_FIELD (word, 7, 8);
|
||||
return sign_extend (val, 21) << 11;
|
||||
}
|
||||
|
||||
/* deposit a 21 bit constant in a word. Although 21 bit constants are
|
||||
usually the top 21 bits of a 32 bit constant, we assume that only
|
||||
the low 21 bits of opnd are relevant */
|
||||
|
||||
unsigned
|
||||
deposit_21 (opnd, word)
|
||||
unsigned opnd, word;
|
||||
{
|
||||
unsigned val = 0;
|
||||
|
||||
val |= GET_FIELD (opnd, 11 + 14, 11 + 18);
|
||||
val <<= 2;
|
||||
val |= GET_FIELD (opnd, 11 + 12, 11 + 13);
|
||||
val <<= 2;
|
||||
val |= GET_FIELD (opnd, 11 + 19, 11 + 20);
|
||||
val <<= 11;
|
||||
val |= GET_FIELD (opnd, 11 + 1, 11 + 11);
|
||||
val <<= 1;
|
||||
val |= GET_FIELD (opnd, 11 + 0, 11 + 0);
|
||||
return word | val;
|
||||
}
|
||||
|
||||
/* extract a 12 bit constant from branch instructions */
|
||||
|
||||
int
|
||||
extract_12 (word)
|
||||
unsigned word;
|
||||
{
|
||||
return sign_extend (GET_FIELD (word, 19, 28) |
|
||||
GET_FIELD (word, 29, 29) << 10 |
|
||||
(word & 0x1) << 11, 12) << 2;
|
||||
}
|
||||
|
||||
/* extract a 17 bit constant from branch instructions, returning the
|
||||
19 bit signed value. */
|
||||
|
||||
int
|
||||
extract_17 (word)
|
||||
unsigned word;
|
||||
{
|
||||
return sign_extend (GET_FIELD (word, 19, 28) |
|
||||
GET_FIELD (word, 29, 29) << 10 |
|
||||
GET_FIELD (word, 11, 15) << 11 |
|
||||
(word & 0x1) << 16, 17) << 2;
|
||||
}
|
||||
|
||||
static int use_unwind = 0;
|
||||
|
||||
/* Lookup the unwind (stack backtrace) info for the given PC. We search all
|
||||
of the objfiles seeking the unwind table entry for this PC. Each objfile
|
||||
contains a sorted list of struct unwind_table_entry. Since we do a binary
|
||||
search of the unwind tables, we depend upon them to be sorted. */
|
||||
|
||||
static struct unwind_table_entry *
|
||||
find_unwind_entry(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
int first, middle, last;
|
||||
struct objfile *objfile;
|
||||
|
||||
ALL_OBJFILES (objfile)
|
||||
{
|
||||
struct obj_unwind_info *ui;
|
||||
|
||||
ui = OBJ_UNWIND_INFO (objfile);
|
||||
|
||||
if (!ui)
|
||||
continue;
|
||||
|
||||
/* First, check the cache */
|
||||
|
||||
if (ui->cache
|
||||
&& pc >= ui->cache->region_start
|
||||
&& pc <= ui->cache->region_end)
|
||||
return ui->cache;
|
||||
|
||||
/* Not in the cache, do a binary search */
|
||||
|
||||
first = 0;
|
||||
last = ui->last;
|
||||
|
||||
while (first <= last)
|
||||
{
|
||||
middle = (first + last) / 2;
|
||||
if (pc >= ui->table[middle].region_start
|
||||
&& pc <= ui->table[middle].region_end)
|
||||
{
|
||||
ui->cache = &ui->table[middle];
|
||||
return &ui->table[middle];
|
||||
}
|
||||
|
||||
if (pc < ui->table[middle].region_start)
|
||||
last = middle - 1;
|
||||
else
|
||||
first = middle + 1;
|
||||
}
|
||||
} /* ALL_OBJFILES() */
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int
|
||||
find_return_regnum(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
struct unwind_table_entry *u;
|
||||
|
||||
u = find_unwind_entry (pc);
|
||||
|
||||
if (!u)
|
||||
return RP_REGNUM;
|
||||
|
||||
if (u->Millicode)
|
||||
return 31;
|
||||
|
||||
return RP_REGNUM;
|
||||
}
|
||||
|
||||
int
|
||||
find_proc_framesize(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
struct unwind_table_entry *u;
|
||||
|
||||
if (!use_unwind)
|
||||
return -1;
|
||||
|
||||
u = find_unwind_entry (pc);
|
||||
|
||||
if (!u)
|
||||
return -1;
|
||||
|
||||
return u->Total_frame_size << 3;
|
||||
}
|
||||
|
||||
int
|
||||
rp_saved(pc)
|
||||
{
|
||||
struct unwind_table_entry *u;
|
||||
|
||||
u = find_unwind_entry (pc);
|
||||
|
||||
if (!u)
|
||||
return 0;
|
||||
|
||||
if (u->Save_RP)
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
saved_pc_after_call (frame)
|
||||
FRAME frame;
|
||||
{
|
||||
int ret_regnum;
|
||||
|
||||
ret_regnum = find_return_regnum (get_frame_pc (frame));
|
||||
|
||||
return read_register (ret_regnum) & ~0x3;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
frame_saved_pc (frame)
|
||||
FRAME frame;
|
||||
{
|
||||
CORE_ADDR pc = get_frame_pc (frame);
|
||||
|
||||
if (frameless_look_for_prologue (frame))
|
||||
{
|
||||
int ret_regnum;
|
||||
|
||||
ret_regnum = find_return_regnum (pc);
|
||||
|
||||
return read_register (ret_regnum) & ~0x3;
|
||||
}
|
||||
else if (rp_saved (pc))
|
||||
return read_memory_integer (frame->frame - 20, 4) & ~0x3;
|
||||
else
|
||||
return read_register (RP_REGNUM) & ~0x3;
|
||||
}
|
||||
|
||||
/* We need to correct the PC and the FP for the outermost frame when we are
|
||||
in a system call. */
|
||||
|
||||
void
|
||||
init_extra_frame_info (fromleaf, frame)
|
||||
int fromleaf;
|
||||
struct frame_info *frame;
|
||||
{
|
||||
int flags;
|
||||
int framesize;
|
||||
|
||||
if (frame->next) /* Only do this for outermost frame */
|
||||
return;
|
||||
|
||||
flags = read_register (FLAGS_REGNUM);
|
||||
if (flags & 2) /* In system call? */
|
||||
frame->pc = read_register (31) & ~0x3;
|
||||
|
||||
/* The outermost frame is always derived from PC-framesize */
|
||||
framesize = find_proc_framesize(frame->pc);
|
||||
if (framesize == -1)
|
||||
frame->frame = read_register (FP_REGNUM);
|
||||
else
|
||||
frame->frame = read_register (SP_REGNUM) - framesize;
|
||||
|
||||
if (!frameless_look_for_prologue (frame)) /* Frameless? */
|
||||
return; /* No, quit now */
|
||||
|
||||
/* For frameless functions, we need to look at the caller's frame */
|
||||
framesize = find_proc_framesize(FRAME_SAVED_PC(frame));
|
||||
if (framesize != -1)
|
||||
frame->frame -= framesize;
|
||||
}
|
||||
|
||||
FRAME_ADDR
|
||||
frame_chain (frame)
|
||||
struct frame_info *frame;
|
||||
{
|
||||
int framesize;
|
||||
|
||||
framesize = find_proc_framesize(FRAME_SAVED_PC(frame));
|
||||
|
||||
if (framesize != -1)
|
||||
return frame->frame - framesize;
|
||||
|
||||
return read_memory_integer (frame->frame, 4);
|
||||
}
|
||||
|
||||
/* To see if a frame chain is valid, see if the caller looks like it
|
||||
was compiled with gcc. */
|
||||
|
||||
int
|
||||
frame_chain_valid (chain, thisframe)
|
||||
FRAME_ADDR chain;
|
||||
FRAME thisframe;
|
||||
{
|
||||
struct minimal_symbol *msym;
|
||||
|
||||
if (!chain)
|
||||
return 0;
|
||||
|
||||
msym = lookup_minimal_symbol_by_pc (FRAME_SAVED_PC (thisframe));
|
||||
|
||||
if (msym
|
||||
&& (strcmp (SYMBOL_NAME (msym), "_start") == 0))
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
|
||||
#if 0
|
||||
/* Some helper functions. gcc_p returns 1 if the function beginning at
|
||||
pc appears to have been compiled with gcc. hpux_cc_p returns 1 if
|
||||
fn was compiled with hpux cc. gcc functions look like :
|
||||
|
||||
stw rp,-0x14(sp) ; optional
|
||||
or r4,r0,r1
|
||||
or sp,r0,r4
|
||||
stwm r1,framesize(sp)
|
||||
|
||||
hpux cc functions look like:
|
||||
|
||||
stw rp,-0x14(sp) ; optional.
|
||||
stwm r3,framesiz(sp)
|
||||
*/
|
||||
|
||||
gcc_p (pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
if (read_memory_integer (pc, 4) == 0x6BC23FD9)
|
||||
pc = pc + 4;
|
||||
|
||||
if (read_memory_integer (pc, 4) == 0x8040241
|
||||
&& read_memory_integer (pc + 4, 4) == 0x81E0244)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* These functions deal with saving and restoring register state
|
||||
* around a function call in the inferior. They keep the stack
|
||||
* double-word aligned; eventually, on an hp700, the stack will have
|
||||
* to be aligned to a 64-byte boundary.
|
||||
*/
|
||||
|
||||
int
|
||||
push_dummy_frame ()
|
||||
{
|
||||
register CORE_ADDR sp;
|
||||
register int regnum;
|
||||
int int_buffer;
|
||||
double freg_buffer;
|
||||
|
||||
/* Space for "arguments"; the RP goes in here. */
|
||||
sp = read_register (SP_REGNUM) + 48;
|
||||
int_buffer = read_register (RP_REGNUM) | 0x3;
|
||||
write_memory (sp - 20, (char *)&int_buffer, 4);
|
||||
|
||||
int_buffer = read_register (FP_REGNUM);
|
||||
write_memory (sp, (char *)&int_buffer, 4);
|
||||
|
||||
write_register (FP_REGNUM, sp);
|
||||
|
||||
sp += 8;
|
||||
|
||||
for (regnum = 1; regnum < 32; regnum++)
|
||||
if (regnum != RP_REGNUM && regnum != FP_REGNUM)
|
||||
sp = push_word (sp, read_register (regnum));
|
||||
|
||||
sp += 4;
|
||||
|
||||
for (regnum = FP0_REGNUM; regnum < NUM_REGS; regnum++)
|
||||
{
|
||||
read_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
|
||||
sp = push_bytes (sp, (char *)&freg_buffer, 8);
|
||||
}
|
||||
sp = push_word (sp, read_register (IPSW_REGNUM));
|
||||
sp = push_word (sp, read_register (SAR_REGNUM));
|
||||
sp = push_word (sp, read_register (PCOQ_HEAD_REGNUM));
|
||||
sp = push_word (sp, read_register (PCSQ_HEAD_REGNUM));
|
||||
sp = push_word (sp, read_register (PCOQ_TAIL_REGNUM));
|
||||
sp = push_word (sp, read_register (PCSQ_TAIL_REGNUM));
|
||||
write_register (SP_REGNUM, sp);
|
||||
}
|
||||
|
||||
find_dummy_frame_regs (frame, frame_saved_regs)
|
||||
struct frame_info *frame;
|
||||
struct frame_saved_regs *frame_saved_regs;
|
||||
{
|
||||
CORE_ADDR fp = frame->frame;
|
||||
int i;
|
||||
|
||||
frame_saved_regs->regs[RP_REGNUM] = fp - 20 & ~0x3;
|
||||
frame_saved_regs->regs[FP_REGNUM] = fp;
|
||||
frame_saved_regs->regs[1] = fp + 8;
|
||||
frame_saved_regs->regs[3] = fp + 12;
|
||||
|
||||
for (fp += 16, i = 5; i < 32; fp += 4, i++)
|
||||
frame_saved_regs->regs[i] = fp;
|
||||
|
||||
fp += 4;
|
||||
for (i = FP0_REGNUM; i < NUM_REGS; i++, fp += 8)
|
||||
frame_saved_regs->regs[i] = fp;
|
||||
|
||||
frame_saved_regs->regs[IPSW_REGNUM] = fp;
|
||||
fp += 4;
|
||||
frame_saved_regs->regs[SAR_REGNUM] = fp;
|
||||
fp += 4;
|
||||
frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp;
|
||||
fp +=4;
|
||||
frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp;
|
||||
fp +=4;
|
||||
frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp;
|
||||
fp +=4;
|
||||
frame_saved_regs->regs[PCSQ_TAIL_REGNUM] = fp;
|
||||
}
|
||||
|
||||
int
|
||||
hppa_pop_frame ()
|
||||
{
|
||||
register FRAME frame = get_current_frame ();
|
||||
register CORE_ADDR fp;
|
||||
register int regnum;
|
||||
struct frame_saved_regs fsr;
|
||||
struct frame_info *fi;
|
||||
double freg_buffer;
|
||||
|
||||
fi = get_frame_info (frame);
|
||||
fp = fi->frame;
|
||||
get_frame_saved_regs (fi, &fsr);
|
||||
|
||||
if (fsr.regs[IPSW_REGNUM]) /* Restoring a call dummy frame */
|
||||
restore_pc_queue (&fsr);
|
||||
|
||||
for (regnum = 31; regnum > 0; regnum--)
|
||||
if (fsr.regs[regnum])
|
||||
write_register (regnum, read_memory_integer (fsr.regs[regnum], 4));
|
||||
|
||||
for (regnum = NUM_REGS - 1; regnum >= FP0_REGNUM ; regnum--)
|
||||
if (fsr.regs[regnum])
|
||||
{
|
||||
read_memory (fsr.regs[regnum], (char *)&freg_buffer, 8);
|
||||
write_register_bytes (REGISTER_BYTE (regnum), (char *)&freg_buffer, 8);
|
||||
}
|
||||
|
||||
if (fsr.regs[IPSW_REGNUM])
|
||||
write_register (IPSW_REGNUM,
|
||||
read_memory_integer (fsr.regs[IPSW_REGNUM], 4));
|
||||
|
||||
if (fsr.regs[SAR_REGNUM])
|
||||
write_register (SAR_REGNUM,
|
||||
read_memory_integer (fsr.regs[SAR_REGNUM], 4));
|
||||
|
||||
if (fsr.regs[PCOQ_TAIL_REGNUM])
|
||||
write_register (PCOQ_TAIL_REGNUM,
|
||||
read_memory_integer (fsr.regs[PCOQ_TAIL_REGNUM], 4));
|
||||
|
||||
write_register (FP_REGNUM, read_memory_integer (fp, 4));
|
||||
|
||||
if (fsr.regs[IPSW_REGNUM]) /* call dummy */
|
||||
write_register (SP_REGNUM, fp - 48);
|
||||
else
|
||||
write_register (SP_REGNUM, fp);
|
||||
|
||||
flush_cached_frames ();
|
||||
set_current_frame (create_new_frame (read_register (FP_REGNUM),
|
||||
read_pc ()));
|
||||
}
|
||||
|
||||
/*
|
||||
* After returning to a dummy on the stack, restore the instruction
|
||||
* queue space registers. */
|
||||
|
||||
static int
|
||||
restore_pc_queue (fsr)
|
||||
struct frame_saved_regs *fsr;
|
||||
{
|
||||
CORE_ADDR pc = read_pc ();
|
||||
CORE_ADDR new_pc = read_memory_integer (fsr->regs[PCOQ_HEAD_REGNUM], 4);
|
||||
int pid;
|
||||
WAITTYPE w;
|
||||
int insn_count;
|
||||
|
||||
/* Advance past break instruction in the call dummy. */
|
||||
write_register (PCOQ_HEAD_REGNUM, pc + 4);
|
||||
write_register (PCOQ_TAIL_REGNUM, pc + 8);
|
||||
|
||||
/*
|
||||
* HPUX doesn't let us set the space registers or the space
|
||||
* registers of the PC queue through ptrace. Boo, hiss.
|
||||
* Conveniently, the call dummy has this sequence of instructions
|
||||
* after the break:
|
||||
* mtsp r21, sr0
|
||||
* ble,n 0(sr0, r22)
|
||||
*
|
||||
* So, load up the registers and single step until we are in the
|
||||
* right place.
|
||||
*/
|
||||
|
||||
write_register (21, read_memory_integer (fsr->regs[PCSQ_HEAD_REGNUM], 4));
|
||||
write_register (22, new_pc);
|
||||
|
||||
for (insn_count = 0; insn_count < 3; insn_count++)
|
||||
{
|
||||
resume (1, 0);
|
||||
target_wait(&w);
|
||||
|
||||
if (!WIFSTOPPED (w))
|
||||
{
|
||||
stop_signal = WTERMSIG (w);
|
||||
terminal_ours_for_output ();
|
||||
printf ("\nProgram terminated with signal %d, %s\n",
|
||||
stop_signal, safe_strsignal (stop_signal));
|
||||
fflush (stdout);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
fetch_inferior_registers (-1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
CORE_ADDR
|
||||
hppa_push_arguments (nargs, args, sp, struct_return, struct_addr)
|
||||
int nargs;
|
||||
value *args;
|
||||
CORE_ADDR sp;
|
||||
int struct_return;
|
||||
CORE_ADDR struct_addr;
|
||||
{
|
||||
/* array of arguments' offsets */
|
||||
int *offset = (int *)alloca(nargs);
|
||||
int cum = 0;
|
||||
int i, alignment;
|
||||
|
||||
for (i = 0; i < nargs; i++)
|
||||
{
|
||||
/* Coerce chars to int & float to double if necessary */
|
||||
args[i] = value_arg_coerce (args[i]);
|
||||
|
||||
cum += TYPE_LENGTH (VALUE_TYPE (args[i]));
|
||||
|
||||
/* value must go at proper alignment. Assume alignment is a
|
||||
power of two.*/
|
||||
alignment = hppa_alignof (VALUE_TYPE (args[i]));
|
||||
if (cum % alignment)
|
||||
cum = (cum + alignment) & -alignment;
|
||||
offset[i] = -cum;
|
||||
}
|
||||
sp += min ((cum + 7) & -8, 16);
|
||||
|
||||
for (i = 0; i < nargs; i++)
|
||||
write_memory (sp + offset[i], VALUE_CONTENTS (args[i]),
|
||||
TYPE_LENGTH (VALUE_TYPE (args[i])));
|
||||
|
||||
if (struct_return)
|
||||
write_register (28, struct_addr);
|
||||
return sp + 32;
|
||||
}
|
||||
|
||||
/*
|
||||
* Insert the specified number of args and function address
|
||||
* into a call sequence of the above form stored at DUMMYNAME.
|
||||
*
|
||||
* On the hppa we need to call the stack dummy through $$dyncall.
|
||||
* Therefore our version of FIX_CALL_DUMMY takes an extra argument,
|
||||
* real_pc, which is the location where gdb should start up the
|
||||
* inferior to do the function call.
|
||||
*/
|
||||
|
||||
CORE_ADDR
|
||||
hppa_fix_call_dummy (dummy, pc, fun, nargs, args, type, gcc_p)
|
||||
REGISTER_TYPE *dummy;
|
||||
CORE_ADDR pc;
|
||||
CORE_ADDR fun;
|
||||
int nargs;
|
||||
value *args;
|
||||
struct type *type;
|
||||
int gcc_p;
|
||||
{
|
||||
CORE_ADDR dyncall_addr, sr4export_addr;
|
||||
struct minimal_symbol *msymbol;
|
||||
|
||||
msymbol = lookup_minimal_symbol ("$$dyncall", (struct objfile *) NULL);
|
||||
if (msymbol == NULL)
|
||||
error ("Can't find an address for $$dyncall trampoline");
|
||||
|
||||
dyncall_addr = SYMBOL_VALUE_ADDRESS (msymbol);
|
||||
|
||||
msymbol = lookup_minimal_symbol ("_sr4export", (struct objfile *) NULL);
|
||||
if (msymbol == NULL)
|
||||
error ("Can't find an address for _sr4export trampoline");
|
||||
|
||||
sr4export_addr = SYMBOL_VALUE_ADDRESS (msymbol);
|
||||
|
||||
dummy[9] = deposit_21 (fun >> 11, dummy[9]);
|
||||
dummy[10] = deposit_14 (fun & MASK_11, dummy[10]);
|
||||
dummy[12] = deposit_21 (sr4export_addr >> 11, dummy[12]);
|
||||
dummy[13] = deposit_14 (sr4export_addr & MASK_11, dummy[13]);
|
||||
|
||||
write_register (22, pc);
|
||||
|
||||
return dyncall_addr;
|
||||
}
|
||||
|
||||
/* return the alignment of a type in bytes. Structures have the maximum
|
||||
alignment required by their fields. */
|
||||
|
||||
static int
|
||||
hppa_alignof (arg)
|
||||
struct type *arg;
|
||||
{
|
||||
int max_align, align, i;
|
||||
switch (TYPE_CODE (arg))
|
||||
{
|
||||
case TYPE_CODE_PTR:
|
||||
case TYPE_CODE_INT:
|
||||
case TYPE_CODE_FLT:
|
||||
return TYPE_LENGTH (arg);
|
||||
case TYPE_CODE_ARRAY:
|
||||
return hppa_alignof (TYPE_FIELD_TYPE (arg, 0));
|
||||
case TYPE_CODE_STRUCT:
|
||||
case TYPE_CODE_UNION:
|
||||
max_align = 2;
|
||||
for (i = 0; i < TYPE_NFIELDS (arg); i++)
|
||||
{
|
||||
/* Bit fields have no real alignment. */
|
||||
if (!TYPE_FIELD_BITPOS (arg, i))
|
||||
{
|
||||
align = hppa_alignof (TYPE_FIELD_TYPE (arg, i));
|
||||
max_align = max (max_align, align);
|
||||
}
|
||||
}
|
||||
return max_align;
|
||||
default:
|
||||
return 4;
|
||||
}
|
||||
}
|
||||
|
||||
/* Print the register regnum, or all registers if regnum is -1 */
|
||||
|
||||
pa_do_registers_info (regnum, fpregs)
|
||||
int regnum;
|
||||
int fpregs;
|
||||
{
|
||||
char raw_regs [REGISTER_BYTES];
|
||||
int i;
|
||||
|
||||
for (i = 0; i < NUM_REGS; i++)
|
||||
read_relative_register_raw_bytes (i, raw_regs + REGISTER_BYTE (i));
|
||||
if (regnum == -1)
|
||||
pa_print_registers (raw_regs, regnum, fpregs);
|
||||
else if (regnum < FP0_REGNUM)
|
||||
printf ("%s %x\n", reg_names[regnum], *(long *)(raw_regs +
|
||||
REGISTER_BYTE (regnum)));
|
||||
else
|
||||
pa_print_fp_reg (regnum);
|
||||
}
|
||||
|
||||
pa_print_registers (raw_regs, regnum, fpregs)
|
||||
char *raw_regs;
|
||||
int regnum;
|
||||
int fpregs;
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 18; i++)
|
||||
printf ("%8.8s: %8x %8.8s: %8x %8.8s: %8x %8.8s: %8x\n",
|
||||
reg_names[i],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i)),
|
||||
reg_names[i + 18],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i + 18)),
|
||||
reg_names[i + 36],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i + 36)),
|
||||
reg_names[i + 54],
|
||||
*(int *)(raw_regs + REGISTER_BYTE (i + 54)));
|
||||
|
||||
if (fpregs)
|
||||
for (i = 72; i < NUM_REGS; i++)
|
||||
pa_print_fp_reg (i);
|
||||
}
|
||||
|
||||
pa_print_fp_reg (i)
|
||||
int i;
|
||||
{
|
||||
unsigned char raw_buffer[MAX_REGISTER_RAW_SIZE];
|
||||
unsigned char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
|
||||
REGISTER_TYPE val;
|
||||
|
||||
/* Get the data in raw format, then convert also to virtual format. */
|
||||
read_relative_register_raw_bytes (i, raw_buffer);
|
||||
REGISTER_CONVERT_TO_VIRTUAL (i, raw_buffer, virtual_buffer);
|
||||
|
||||
fputs_filtered (reg_names[i], stdout);
|
||||
print_spaces_filtered (15 - strlen (reg_names[i]), stdout);
|
||||
|
||||
val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, stdout, 0,
|
||||
1, 0, Val_pretty_default);
|
||||
printf_filtered ("\n");
|
||||
}
|
||||
|
||||
/* Function calls that pass into a new compilation unit must pass through a
|
||||
small piece of code that does long format (`external' in HPPA parlance)
|
||||
jumps. We figure out where the trampoline is going to end up, and return
|
||||
the PC of the final destination. If we aren't in a trampoline, we just
|
||||
return NULL.
|
||||
|
||||
For computed calls, we just extract the new PC from r22. */
|
||||
|
||||
CORE_ADDR
|
||||
skip_trampoline_code (pc, name)
|
||||
CORE_ADDR pc;
|
||||
char *name;
|
||||
{
|
||||
long inst0, inst1;
|
||||
static CORE_ADDR dyncall = 0;
|
||||
struct minimal_symbol *msym;
|
||||
|
||||
/* FIXME XXX - dyncall must be initialized whenever we get a new exec file */
|
||||
|
||||
if (!dyncall)
|
||||
{
|
||||
msym = lookup_minimal_symbol ("$$dyncall", NULL);
|
||||
if (msym)
|
||||
dyncall = SYMBOL_VALUE_ADDRESS (msym);
|
||||
else
|
||||
dyncall = -1;
|
||||
}
|
||||
|
||||
if (pc == dyncall)
|
||||
return (CORE_ADDR)(read_register (22) & ~0x3);
|
||||
|
||||
inst0 = read_memory_integer (pc, 4);
|
||||
inst1 = read_memory_integer (pc+4, 4);
|
||||
|
||||
if ( (inst0 & 0xffe00000) == 0x20200000 /* ldil xxx, r1 */
|
||||
&& (inst1 & 0xffe0e002) == 0xe0202002) /* be,n yyy(sr4, r1) */
|
||||
pc = extract_21 (inst0) + extract_17 (inst1);
|
||||
else
|
||||
pc = (CORE_ADDR)NULL;
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
/* Advance PC across any function entry prologue instructions
|
||||
to reach some "real" code. */
|
||||
|
||||
/* skip (stw rp, -20(0,sp)); copy 4,1; copy sp, 4; stwm 1,framesize(sp)
|
||||
for gcc, or (stw rp, -20(0,sp); stwm 1, framesize(sp) for hcc */
|
||||
|
||||
CORE_ADDR
|
||||
skip_prologue(pc)
|
||||
CORE_ADDR pc;
|
||||
{
|
||||
int inst;
|
||||
int status;
|
||||
|
||||
status = target_read_memory (pc, (char *)&inst, 4);
|
||||
SWAP_TARGET_AND_HOST (&inst, sizeof (inst));
|
||||
if (status != 0)
|
||||
return pc;
|
||||
|
||||
if (inst == 0x6BC23FD9) /* stw rp,-20(sp) */
|
||||
{
|
||||
if (read_memory_integer (pc + 4, 4) == 0x8040241) /* copy r4,r1 */
|
||||
pc += 16;
|
||||
else if ((read_memory_integer (pc + 4, 4) & ~MASK_14) == 0x68810000) /* stw r1,(r4) */
|
||||
pc += 8;
|
||||
}
|
||||
else if (read_memory_integer (pc, 4) == 0x8040241) /* copy r4,r1 */
|
||||
pc += 12;
|
||||
else if ((read_memory_integer (pc, 4) & ~MASK_14) == 0x68810000) /* stw r1,(r4) */
|
||||
pc += 4;
|
||||
|
||||
return pc;
|
||||
}
|
||||
|
||||
static void
|
||||
unwind_command (exp, from_tty)
|
||||
char *exp;
|
||||
int from_tty;
|
||||
{
|
||||
CORE_ADDR address;
|
||||
union
|
||||
{
|
||||
int *foo;
|
||||
struct unwind_table_entry *u;
|
||||
} xxx;
|
||||
|
||||
/* If we have an expression, evaluate it and use it as the address. */
|
||||
|
||||
if (exp != 0 && *exp != 0)
|
||||
address = parse_and_eval_address (exp);
|
||||
else
|
||||
return;
|
||||
|
||||
xxx.u = find_unwind_entry (address);
|
||||
|
||||
if (!xxx.u)
|
||||
{
|
||||
printf ("Can't find unwind table entry for PC 0x%x\n", address);
|
||||
return;
|
||||
}
|
||||
|
||||
printf ("%08x\n%08X\n%08X\n%08X\n", xxx.foo[0], xxx.foo[1], xxx.foo[2],
|
||||
xxx.foo[3]);
|
||||
}
|
||||
|
||||
void
|
||||
_initialize_hppah_tdep ()
|
||||
{
|
||||
add_com ("unwind", class_obscure, unwind_command, "Print unwind info\n");
|
||||
add_show_from_set
|
||||
(add_set_cmd ("use_unwind", class_obscure, var_boolean,
|
||||
(char *)&use_unwind,
|
||||
"Set the usage of unwind info", &setlist),
|
||||
&showlist);
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user