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darling-gdb/gdb/a29k-tdep.c
Andrew Cagney 9b4ff27668 * MAINTAINERS: Mark a29k target as obsolete. 
* Makefile.in (a29k-tdep.o, remote-adapt.o, remote-eb.o)
(remote-mm.o, remote-udi.o): Obsolete.  Remove references in
comments.
* NEWS: Note that a29k targets are obsolete.
* a29k-tdep.c: Mark as obsolete.
* configure.tgt: Mark a29k-*-aout*, a29k-*-coff*, a29k-*-elf*,
a29k-*-ebmon*, a29k-*-kern*, a29k-*-none*, a29k-*-udi* and
a29k-*-vxworks* targets as obsolete.
* remote-adapt.c: Obsolete.
* remote-eb.c: Obsolete.
* remote-mm.c: Obsolete.
* remote-udi.c: Obsolete.
* config/a29k/a29k-udi.mt: Obsolete.
* config/a29k/a29k.mt: Obsolete.
* config/a29k/tm-a29k.h: Obsolete.
* config/a29k/tm-vx29k.h: Obsolete.
* config/a29k/vx29k.mt: Obsolete.
2002-01-06 15:02:01 +00:00

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/* OBSOLETE /* Target-machine dependent code for the AMD 29000 */
/* OBSOLETE Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, */
/* OBSOLETE 2001 */
/* OBSOLETE Free Software Foundation, Inc. */
/* OBSOLETE Contributed by Cygnus Support. Written by Jim Kingdon. */
/* OBSOLETE */
/* OBSOLETE This file is part of GDB. */
/* OBSOLETE */
/* OBSOLETE This program is free software; you can redistribute it and/or modify */
/* OBSOLETE it under the terms of the GNU General Public License as published by */
/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */
/* OBSOLETE (at your option) any later version. */
/* OBSOLETE */
/* OBSOLETE This program is distributed in the hope that it will be useful, */
/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* OBSOLETE GNU General Public License for more details. */
/* OBSOLETE */
/* OBSOLETE You should have received a copy of the GNU General Public License */
/* OBSOLETE along with this program; if not, write to the Free Software */
/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */
/* OBSOLETE Boston, MA 02111-1307, USA. */ */
/* OBSOLETE */
/* OBSOLETE #include "defs.h" */
/* OBSOLETE #include "gdbcore.h" */
/* OBSOLETE #include "frame.h" */
/* OBSOLETE #include "value.h" */
/* OBSOLETE #include "symtab.h" */
/* OBSOLETE #include "inferior.h" */
/* OBSOLETE #include "gdbcmd.h" */
/* OBSOLETE #include "regcache.h" */
/* OBSOLETE */
/* OBSOLETE /* If all these bits in an instruction word are zero, it is a "tag word" */
/* OBSOLETE which precedes a function entry point and gives stack traceback info. */
/* OBSOLETE This used to be defined as 0xff000000, but that treated 0x00000deb as */
/* OBSOLETE a tag word, while it is really used as a breakpoint. */ */
/* OBSOLETE #define TAGWORD_ZERO_MASK 0xff00f800 */
/* OBSOLETE */
/* OBSOLETE extern CORE_ADDR text_start; /* FIXME, kludge... */ */
/* OBSOLETE */
/* OBSOLETE /* The user-settable top of the register stack in virtual memory. We */
/* OBSOLETE won't attempt to access any stored registers above this address, if set */
/* OBSOLETE nonzero. */ */
/* OBSOLETE */
/* OBSOLETE static CORE_ADDR rstack_high_address = UINT_MAX; */
/* OBSOLETE */
/* OBSOLETE */
/* OBSOLETE /* Should call_function allocate stack space for a struct return? */ */
/* OBSOLETE /* On the a29k objects over 16 words require the caller to allocate space. */ */
/* OBSOLETE int */
/* OBSOLETE a29k_use_struct_convention (int gcc_p, struct type *type) */
/* OBSOLETE { */
/* OBSOLETE return (TYPE_LENGTH (type) > 16 * 4); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE */
/* OBSOLETE /* Structure to hold cached info about function prologues. */ */
/* OBSOLETE */
/* OBSOLETE struct prologue_info */
/* OBSOLETE { */
/* OBSOLETE CORE_ADDR pc; /* First addr after fn prologue */ */
/* OBSOLETE unsigned rsize, msize; /* register stack frame size, mem stack ditto */ */
/* OBSOLETE unsigned mfp_used:1; /* memory frame pointer used */ */
/* OBSOLETE unsigned rsize_valid:1; /* Validity bits for the above */ */
/* OBSOLETE unsigned msize_valid:1; */
/* OBSOLETE unsigned mfp_valid:1; */
/* OBSOLETE }; */
/* OBSOLETE */
/* OBSOLETE /* Examine the prologue of a function which starts at PC. Return */
/* OBSOLETE the first addess past the prologue. If MSIZE is non-NULL, then */
/* OBSOLETE set *MSIZE to the memory stack frame size. If RSIZE is non-NULL, */
/* OBSOLETE then set *RSIZE to the register stack frame size (not including */
/* OBSOLETE incoming arguments and the return address & frame pointer stored */
/* OBSOLETE with them). If no prologue is found, *RSIZE is set to zero. */
/* OBSOLETE If no prologue is found, or a prologue which doesn't involve */
/* OBSOLETE allocating a memory stack frame, then set *MSIZE to zero. */
/* OBSOLETE */
/* OBSOLETE Note that both msize and rsize are in bytes. This is not consistent */
/* OBSOLETE with the _User's Manual_ with respect to rsize, but it is much more */
/* OBSOLETE convenient. */
/* OBSOLETE */
/* OBSOLETE If MFP_USED is non-NULL, *MFP_USED is set to nonzero if a memory */
/* OBSOLETE frame pointer is being used. */ */
/* OBSOLETE */
/* OBSOLETE CORE_ADDR */
/* OBSOLETE examine_prologue (CORE_ADDR pc, unsigned *rsize, unsigned *msize, int *mfp_used) */
/* OBSOLETE { */
/* OBSOLETE long insn; */
/* OBSOLETE CORE_ADDR p = pc; */
/* OBSOLETE struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); */
/* OBSOLETE struct prologue_info *mi = 0; */
/* OBSOLETE */
/* OBSOLETE if (msymbol != NULL) */
/* OBSOLETE mi = (struct prologue_info *) msymbol->info; */
/* OBSOLETE */
/* OBSOLETE if (mi != 0) */
/* OBSOLETE { */
/* OBSOLETE int valid = 1; */
/* OBSOLETE if (rsize != NULL) */
/* OBSOLETE { */
/* OBSOLETE *rsize = mi->rsize; */
/* OBSOLETE valid &= mi->rsize_valid; */
/* OBSOLETE } */
/* OBSOLETE if (msize != NULL) */
/* OBSOLETE { */
/* OBSOLETE *msize = mi->msize; */
/* OBSOLETE valid &= mi->msize_valid; */
/* OBSOLETE } */
/* OBSOLETE if (mfp_used != NULL) */
/* OBSOLETE { */
/* OBSOLETE *mfp_used = mi->mfp_used; */
/* OBSOLETE valid &= mi->mfp_valid; */
/* OBSOLETE } */
/* OBSOLETE if (valid) */
/* OBSOLETE return mi->pc; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE if (rsize != NULL) */
/* OBSOLETE *rsize = 0; */
/* OBSOLETE if (msize != NULL) */
/* OBSOLETE *msize = 0; */
/* OBSOLETE if (mfp_used != NULL) */
/* OBSOLETE *mfp_used = 0; */
/* OBSOLETE */
/* OBSOLETE /* Prologue must start with subtracting a constant from gr1. */
/* OBSOLETE Normally this is sub gr1,gr1,<rsize * 4>. */ */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if ((insn & 0xffffff00) != 0x25010100) */
/* OBSOLETE { */
/* OBSOLETE /* If the frame is large, instead of a single instruction it */
/* OBSOLETE might be a pair of instructions: */
/* OBSOLETE const <reg>, <rsize * 4> */
/* OBSOLETE sub gr1,gr1,<reg> */
/* OBSOLETE */ */
/* OBSOLETE int reg; */
/* OBSOLETE /* Possible value for rsize. */ */
/* OBSOLETE unsigned int rsize0; */
/* OBSOLETE */
/* OBSOLETE if ((insn & 0xff000000) != 0x03000000) */
/* OBSOLETE { */
/* OBSOLETE p = pc; */
/* OBSOLETE goto done; */
/* OBSOLETE } */
/* OBSOLETE reg = (insn >> 8) & 0xff; */
/* OBSOLETE rsize0 = (((insn >> 8) & 0xff00) | (insn & 0xff)); */
/* OBSOLETE p += 4; */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if ((insn & 0xffffff00) != 0x24010100 */
/* OBSOLETE || (insn & 0xff) != reg) */
/* OBSOLETE { */
/* OBSOLETE p = pc; */
/* OBSOLETE goto done; */
/* OBSOLETE } */
/* OBSOLETE if (rsize != NULL) */
/* OBSOLETE *rsize = rsize0; */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE if (rsize != NULL) */
/* OBSOLETE *rsize = (insn & 0xff); */
/* OBSOLETE } */
/* OBSOLETE p += 4; */
/* OBSOLETE */
/* OBSOLETE /* Next instruction ought to be asgeu V_SPILL,gr1,rab. */
/* OBSOLETE * We don't check the vector number to allow for kernel debugging. The */
/* OBSOLETE * kernel will use a different trap number. */
/* OBSOLETE * If this insn is missing, we just keep going; Metaware R2.3u compiler */
/* OBSOLETE * generates prologue that intermixes initializations and puts the asgeu */
/* OBSOLETE * way down. */
/* OBSOLETE */ */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if ((insn & 0xff00ffff) == (0x5e000100 | RAB_HW_REGNUM)) */
/* OBSOLETE { */
/* OBSOLETE p += 4; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Next instruction usually sets the frame pointer (lr1) by adding */
/* OBSOLETE <size * 4> from gr1. However, this can (and high C does) be */
/* OBSOLETE deferred until anytime before the first function call. So it is */
/* OBSOLETE OK if we don't see anything which sets lr1. */
/* OBSOLETE To allow for alternate register sets (gcc -mkernel-registers) the msp */
/* OBSOLETE register number is a compile time constant. */ */
/* OBSOLETE */
/* OBSOLETE /* Normally this is just add lr1,gr1,<size * 4>. */ */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if ((insn & 0xffffff00) == 0x15810100) */
/* OBSOLETE p += 4; */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE /* However, for large frames it can be */
/* OBSOLETE const <reg>, <size *4> */
/* OBSOLETE add lr1,gr1,<reg> */
/* OBSOLETE */ */
/* OBSOLETE int reg; */
/* OBSOLETE CORE_ADDR q; */
/* OBSOLETE */
/* OBSOLETE if ((insn & 0xff000000) == 0x03000000) */
/* OBSOLETE { */
/* OBSOLETE reg = (insn >> 8) & 0xff; */
/* OBSOLETE q = p + 4; */
/* OBSOLETE insn = read_memory_integer (q, 4); */
/* OBSOLETE if ((insn & 0xffffff00) == 0x14810100 */
/* OBSOLETE && (insn & 0xff) == reg) */
/* OBSOLETE p = q; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Next comes "add lr{<rsize-1>},msp,0", but only if a memory */
/* OBSOLETE frame pointer is in use. We just check for add lr<anything>,msp,0; */
/* OBSOLETE we don't check this rsize against the first instruction, and */
/* OBSOLETE we don't check that the trace-back tag indicates a memory frame pointer */
/* OBSOLETE is in use. */
/* OBSOLETE To allow for alternate register sets (gcc -mkernel-registers) the msp */
/* OBSOLETE register number is a compile time constant. */
/* OBSOLETE */
/* OBSOLETE The recommended instruction is actually "sll lr<whatever>,msp,0". */
/* OBSOLETE We check for that, too. Originally Jim Kingdon's code seemed */
/* OBSOLETE to be looking for a "sub" instruction here, but the mask was set */
/* OBSOLETE up to lose all the time. */ */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if (((insn & 0xff80ffff) == (0x15800000 | (MSP_HW_REGNUM << 8))) /* add */ */
/* OBSOLETE || ((insn & 0xff80ffff) == (0x81800000 | (MSP_HW_REGNUM << 8)))) /* sll */ */
/* OBSOLETE { */
/* OBSOLETE p += 4; */
/* OBSOLETE if (mfp_used != NULL) */
/* OBSOLETE *mfp_used = 1; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Next comes a subtraction from msp to allocate a memory frame, */
/* OBSOLETE but only if a memory frame is */
/* OBSOLETE being used. We don't check msize against the trace-back tag. */
/* OBSOLETE */
/* OBSOLETE To allow for alternate register sets (gcc -mkernel-registers) the msp */
/* OBSOLETE register number is a compile time constant. */
/* OBSOLETE */
/* OBSOLETE Normally this is just */
/* OBSOLETE sub msp,msp,<msize> */
/* OBSOLETE */ */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if ((insn & 0xffffff00) == */
/* OBSOLETE (0x25000000 | (MSP_HW_REGNUM << 16) | (MSP_HW_REGNUM << 8))) */
/* OBSOLETE { */
/* OBSOLETE p += 4; */
/* OBSOLETE if (msize != NULL) */
/* OBSOLETE *msize = insn & 0xff; */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE /* For large frames, instead of a single instruction it might */
/* OBSOLETE be */
/* OBSOLETE */
/* OBSOLETE const <reg>, <msize> */
/* OBSOLETE consth <reg>, <msize> ; optional */
/* OBSOLETE sub msp,msp,<reg> */
/* OBSOLETE */ */
/* OBSOLETE int reg; */
/* OBSOLETE unsigned msize0; */
/* OBSOLETE CORE_ADDR q = p; */
/* OBSOLETE */
/* OBSOLETE if ((insn & 0xff000000) == 0x03000000) */
/* OBSOLETE { */
/* OBSOLETE reg = (insn >> 8) & 0xff; */
/* OBSOLETE msize0 = ((insn >> 8) & 0xff00) | (insn & 0xff); */
/* OBSOLETE q += 4; */
/* OBSOLETE insn = read_memory_integer (q, 4); */
/* OBSOLETE /* Check for consth. */ */
/* OBSOLETE if ((insn & 0xff000000) == 0x02000000 */
/* OBSOLETE && (insn & 0x0000ff00) == reg) */
/* OBSOLETE { */
/* OBSOLETE msize0 |= (insn << 8) & 0xff000000; */
/* OBSOLETE msize0 |= (insn << 16) & 0x00ff0000; */
/* OBSOLETE q += 4; */
/* OBSOLETE insn = read_memory_integer (q, 4); */
/* OBSOLETE } */
/* OBSOLETE /* Check for sub msp,msp,<reg>. */ */
/* OBSOLETE if ((insn & 0xffffff00) == */
/* OBSOLETE (0x24000000 | (MSP_HW_REGNUM << 16) | (MSP_HW_REGNUM << 8)) */
/* OBSOLETE && (insn & 0xff) == reg) */
/* OBSOLETE { */
/* OBSOLETE p = q + 4; */
/* OBSOLETE if (msize != NULL) */
/* OBSOLETE *msize = msize0; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Next instruction might be asgeu V_SPILL,gr1,rab. */
/* OBSOLETE * We don't check the vector number to allow for kernel debugging. The */
/* OBSOLETE * kernel will use a different trap number. */
/* OBSOLETE * Metaware R2.3u compiler */
/* OBSOLETE * generates prologue that intermixes initializations and puts the asgeu */
/* OBSOLETE * way down after everything else. */
/* OBSOLETE */ */
/* OBSOLETE insn = read_memory_integer (p, 4); */
/* OBSOLETE if ((insn & 0xff00ffff) == (0x5e000100 | RAB_HW_REGNUM)) */
/* OBSOLETE { */
/* OBSOLETE p += 4; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE done: */
/* OBSOLETE if (msymbol != NULL) */
/* OBSOLETE { */
/* OBSOLETE if (mi == 0) */
/* OBSOLETE { */
/* OBSOLETE /* Add a new cache entry. */ */
/* OBSOLETE mi = (struct prologue_info *) xmalloc (sizeof (struct prologue_info)); */
/* OBSOLETE msymbol->info = (char *) mi; */
/* OBSOLETE mi->rsize_valid = 0; */
/* OBSOLETE mi->msize_valid = 0; */
/* OBSOLETE mi->mfp_valid = 0; */
/* OBSOLETE } */
/* OBSOLETE /* else, cache entry exists, but info is incomplete. */ */
/* OBSOLETE mi->pc = p; */
/* OBSOLETE if (rsize != NULL) */
/* OBSOLETE { */
/* OBSOLETE mi->rsize = *rsize; */
/* OBSOLETE mi->rsize_valid = 1; */
/* OBSOLETE } */
/* OBSOLETE if (msize != NULL) */
/* OBSOLETE { */
/* OBSOLETE mi->msize = *msize; */
/* OBSOLETE mi->msize_valid = 1; */
/* OBSOLETE } */
/* OBSOLETE if (mfp_used != NULL) */
/* OBSOLETE { */
/* OBSOLETE mi->mfp_used = *mfp_used; */
/* OBSOLETE mi->mfp_valid = 1; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE return p; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Advance PC across any function entry prologue instructions */
/* OBSOLETE to reach some "real" code. */ */
/* OBSOLETE */
/* OBSOLETE CORE_ADDR */
/* OBSOLETE a29k_skip_prologue (CORE_ADDR pc) */
/* OBSOLETE { */
/* OBSOLETE return examine_prologue (pc, NULL, NULL, NULL); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* */
/* OBSOLETE * Examine the one or two word tag at the beginning of a function. */
/* OBSOLETE * The tag word is expect to be at 'p', if it is not there, we fail */
/* OBSOLETE * by returning 0. The documentation for the tag word was taken from */
/* OBSOLETE * page 7-15 of the 29050 User's Manual. We are assuming that the */
/* OBSOLETE * m bit is in bit 22 of the tag word, which seems to be the agreed upon */
/* OBSOLETE * convention today (1/15/92). */
/* OBSOLETE * msize is return in bytes. */
/* OBSOLETE */ */
/* OBSOLETE */
/* OBSOLETE static int /* 0/1 - failure/success of finding the tag word */ */
/* OBSOLETE examine_tag (CORE_ADDR p, int *is_trans, int *argcount, unsigned *msize, */
/* OBSOLETE int *mfp_used) */
/* OBSOLETE { */
/* OBSOLETE unsigned int tag1, tag2; */
/* OBSOLETE */
/* OBSOLETE tag1 = read_memory_integer (p, 4); */
/* OBSOLETE if ((tag1 & TAGWORD_ZERO_MASK) != 0) /* Not a tag word */ */
/* OBSOLETE return 0; */
/* OBSOLETE if (tag1 & (1 << 23)) /* A two word tag */ */
/* OBSOLETE { */
/* OBSOLETE tag2 = read_memory_integer (p - 4, 4); */
/* OBSOLETE if (msize) */
/* OBSOLETE *msize = tag2 * 2; */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE /* A one word tag */ */
/* OBSOLETE { */
/* OBSOLETE if (msize) */
/* OBSOLETE *msize = tag1 & 0x7ff; */
/* OBSOLETE } */
/* OBSOLETE if (is_trans) */
/* OBSOLETE *is_trans = ((tag1 & (1 << 21)) ? 1 : 0); */
/* OBSOLETE /* Note that this includes the frame pointer and the return address */
/* OBSOLETE register, so the actual number of registers of arguments is two less. */
/* OBSOLETE argcount can be zero, however, sometimes, for strange assembler */
/* OBSOLETE routines. */ */
/* OBSOLETE if (argcount) */
/* OBSOLETE *argcount = (tag1 >> 16) & 0x1f; */
/* OBSOLETE if (mfp_used) */
/* OBSOLETE *mfp_used = ((tag1 & (1 << 22)) ? 1 : 0); */
/* OBSOLETE return 1; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Initialize the frame. In addition to setting "extra" frame info, */
/* OBSOLETE we also set ->frame because we use it in a nonstandard way, and ->pc */
/* OBSOLETE because we need to know it to get the other stuff. See the diagram */
/* OBSOLETE of stacks and the frame cache in tm-a29k.h for more detail. */ */
/* OBSOLETE */
/* OBSOLETE static void */
/* OBSOLETE init_frame_info (int innermost_frame, struct frame_info *frame) */
/* OBSOLETE { */
/* OBSOLETE CORE_ADDR p; */
/* OBSOLETE long insn; */
/* OBSOLETE unsigned rsize; */
/* OBSOLETE unsigned msize; */
/* OBSOLETE int mfp_used, trans; */
/* OBSOLETE struct symbol *func; */
/* OBSOLETE */
/* OBSOLETE p = frame->pc; */
/* OBSOLETE */
/* OBSOLETE if (innermost_frame) */
/* OBSOLETE frame->frame = read_register (GR1_REGNUM); */
/* OBSOLETE else */
/* OBSOLETE frame->frame = frame->next->frame + frame->next->rsize; */
/* OBSOLETE */
/* OBSOLETE #if 0 /* CALL_DUMMY_LOCATION == ON_STACK */ */
/* OBSOLETE This wont work; */
/* OBSOLETE #else */
/* OBSOLETE if (PC_IN_CALL_DUMMY (p, 0, 0)) */
/* OBSOLETE #endif */
/* OBSOLETE { */
/* OBSOLETE frame->rsize = DUMMY_FRAME_RSIZE; */
/* OBSOLETE /* This doesn't matter since we never try to get locals or args */
/* OBSOLETE from a dummy frame. */ */
/* OBSOLETE frame->msize = 0; */
/* OBSOLETE /* Dummy frames always use a memory frame pointer. */ */
/* OBSOLETE frame->saved_msp = */
/* OBSOLETE read_register_stack_integer (frame->frame + DUMMY_FRAME_RSIZE - 4, 4); */
/* OBSOLETE frame->flags |= (TRANSPARENT_FRAME | MFP_USED); */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE func = find_pc_function (p); */
/* OBSOLETE if (func != NULL) */
/* OBSOLETE p = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE /* Search backward to find the trace-back tag. However, */
/* OBSOLETE do not trace back beyond the start of the text segment */
/* OBSOLETE (just as a sanity check to avoid going into never-never land). */ */
/* OBSOLETE #if 1 */
/* OBSOLETE while (p >= text_start */
/* OBSOLETE && ((insn = read_memory_integer (p, 4)) & TAGWORD_ZERO_MASK) != 0) */
/* OBSOLETE p -= 4; */
/* OBSOLETE #else /* 0 */ */
/* OBSOLETE char pat[4] = */
/* OBSOLETE {0, 0, 0, 0}; */
/* OBSOLETE char mask[4]; */
/* OBSOLETE char insn_raw[4]; */
/* OBSOLETE store_unsigned_integer (mask, 4, TAGWORD_ZERO_MASK); */
/* OBSOLETE /* Enable this once target_search is enabled and tested. */ */
/* OBSOLETE target_search (4, pat, mask, p, -4, text_start, p + 1, &p, &insn_raw); */
/* OBSOLETE insn = extract_unsigned_integer (insn_raw, 4); */
/* OBSOLETE #endif /* 0 */ */
/* OBSOLETE */
/* OBSOLETE if (p < text_start) */
/* OBSOLETE { */
/* OBSOLETE /* Couldn't find the trace-back tag. */
/* OBSOLETE Something strange is going on. */ */
/* OBSOLETE frame->saved_msp = 0; */
/* OBSOLETE frame->rsize = 0; */
/* OBSOLETE frame->msize = 0; */
/* OBSOLETE frame->flags = TRANSPARENT_FRAME; */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE /* Advance to the first word of the function, i.e. the word */
/* OBSOLETE after the trace-back tag. */ */
/* OBSOLETE p += 4; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* We've found the start of the function. */
/* OBSOLETE Try looking for a tag word that indicates whether there is a */
/* OBSOLETE memory frame pointer and what the memory stack allocation is. */
/* OBSOLETE If one doesn't exist, try using a more exhaustive search of */
/* OBSOLETE the prologue. */ */
/* OBSOLETE */
/* OBSOLETE if (examine_tag (p - 4, &trans, (int *) NULL, &msize, &mfp_used)) /* Found good tag */ */
/* OBSOLETE examine_prologue (p, &rsize, 0, 0); */
/* OBSOLETE else /* No tag try prologue */ */
/* OBSOLETE examine_prologue (p, &rsize, &msize, &mfp_used); */
/* OBSOLETE */
/* OBSOLETE frame->rsize = rsize; */
/* OBSOLETE frame->msize = msize; */
/* OBSOLETE frame->flags = 0; */
/* OBSOLETE if (mfp_used) */
/* OBSOLETE frame->flags |= MFP_USED; */
/* OBSOLETE if (trans) */
/* OBSOLETE frame->flags |= TRANSPARENT_FRAME; */
/* OBSOLETE if (innermost_frame) */
/* OBSOLETE { */
/* OBSOLETE frame->saved_msp = read_register (MSP_REGNUM) + msize; */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE if (mfp_used) */
/* OBSOLETE frame->saved_msp = */
/* OBSOLETE read_register_stack_integer (frame->frame + rsize - 4, 4); */
/* OBSOLETE else */
/* OBSOLETE frame->saved_msp = frame->next->saved_msp + msize; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE init_extra_frame_info (struct frame_info *frame) */
/* OBSOLETE { */
/* OBSOLETE if (frame->next == 0) */
/* OBSOLETE /* Assume innermost frame. May produce strange results for "info frame" */
/* OBSOLETE but there isn't any way to tell the difference. */ */
/* OBSOLETE init_frame_info (1, frame); */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE /* We're in get_prev_frame. */
/* OBSOLETE Take care of everything in init_frame_pc. */ */
/* OBSOLETE ; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE init_frame_pc (int fromleaf, struct frame_info *frame) */
/* OBSOLETE { */
/* OBSOLETE frame->pc = (fromleaf ? SAVED_PC_AFTER_CALL (frame->next) : */
/* OBSOLETE frame->next ? FRAME_SAVED_PC (frame->next) : read_pc ()); */
/* OBSOLETE init_frame_info (fromleaf, frame); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Local variables (i.e. LOC_LOCAL) are on the memory stack, with their */
/* OBSOLETE offsets being relative to the memory stack pointer (high C) or */
/* OBSOLETE saved_msp (gcc). */ */
/* OBSOLETE */
/* OBSOLETE CORE_ADDR */
/* OBSOLETE frame_locals_address (struct frame_info *fi) */
/* OBSOLETE { */
/* OBSOLETE if (fi->flags & MFP_USED) */
/* OBSOLETE return fi->saved_msp; */
/* OBSOLETE else */
/* OBSOLETE return fi->saved_msp - fi->msize; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Routines for reading the register stack. The caller gets to treat */
/* OBSOLETE the register stack as a uniform stack in memory, from address $gr1 */
/* OBSOLETE straight through $rfb and beyond. */ */
/* OBSOLETE */
/* OBSOLETE /* Analogous to read_memory except the length is understood to be 4. */
/* OBSOLETE Also, myaddr can be NULL (meaning don't bother to read), and */
/* OBSOLETE if actual_mem_addr is non-NULL, store there the address that it */
/* OBSOLETE was fetched from (or if from a register the offset within */
/* OBSOLETE registers). Set *LVAL to lval_memory or lval_register, depending */
/* OBSOLETE on where it came from. The contents written into MYADDR are in */
/* OBSOLETE target format. */ */
/* OBSOLETE void */
/* OBSOLETE read_register_stack (CORE_ADDR memaddr, char *myaddr, */
/* OBSOLETE CORE_ADDR *actual_mem_addr, enum lval_type *lval) */
/* OBSOLETE { */
/* OBSOLETE long rfb = read_register (RFB_REGNUM); */
/* OBSOLETE long rsp = read_register (RSP_REGNUM); */
/* OBSOLETE */
/* OBSOLETE /* If we don't do this 'info register' stops in the middle. */ */
/* OBSOLETE if (memaddr >= rstack_high_address) */
/* OBSOLETE { */
/* OBSOLETE /* a bogus value */ */
/* OBSOLETE static char val[] = */
/* OBSOLETE {~0, ~0, ~0, ~0}; */
/* OBSOLETE /* It's in a local register, but off the end of the stack. */ */
/* OBSOLETE int regnum = (memaddr - rsp) / 4 + LR0_REGNUM; */
/* OBSOLETE if (myaddr != NULL) */
/* OBSOLETE { */
/* OBSOLETE /* Provide bogusness */ */
/* OBSOLETE memcpy (myaddr, val, 4); */
/* OBSOLETE } */
/* OBSOLETE supply_register (regnum, val); /* More bogusness */ */
/* OBSOLETE if (lval != NULL) */
/* OBSOLETE *lval = lval_register; */
/* OBSOLETE if (actual_mem_addr != NULL) */
/* OBSOLETE *actual_mem_addr = REGISTER_BYTE (regnum); */
/* OBSOLETE } */
/* OBSOLETE /* If it's in the part of the register stack that's in real registers, */
/* OBSOLETE get the value from the registers. If it's anywhere else in memory */
/* OBSOLETE (e.g. in another thread's saved stack), skip this part and get */
/* OBSOLETE it from real live memory. */ */
/* OBSOLETE else if (memaddr < rfb && memaddr >= rsp) */
/* OBSOLETE { */
/* OBSOLETE /* It's in a register. */ */
/* OBSOLETE int regnum = (memaddr - rsp) / 4 + LR0_REGNUM; */
/* OBSOLETE if (regnum > LR0_REGNUM + 127) */
/* OBSOLETE error ("Attempt to read register stack out of range."); */
/* OBSOLETE if (myaddr != NULL) */
/* OBSOLETE read_register_gen (regnum, myaddr); */
/* OBSOLETE if (lval != NULL) */
/* OBSOLETE *lval = lval_register; */
/* OBSOLETE if (actual_mem_addr != NULL) */
/* OBSOLETE *actual_mem_addr = REGISTER_BYTE (regnum); */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE /* It's in the memory portion of the register stack. */ */
/* OBSOLETE if (myaddr != NULL) */
/* OBSOLETE read_memory (memaddr, myaddr, 4); */
/* OBSOLETE if (lval != NULL) */
/* OBSOLETE *lval = lval_memory; */
/* OBSOLETE if (actual_mem_addr != NULL) */
/* OBSOLETE *actual_mem_addr = memaddr; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Analogous to read_memory_integer */
/* OBSOLETE except the length is understood to be 4. */ */
/* OBSOLETE long */
/* OBSOLETE read_register_stack_integer (CORE_ADDR memaddr, int len) */
/* OBSOLETE { */
/* OBSOLETE char buf[4]; */
/* OBSOLETE read_register_stack (memaddr, buf, NULL, NULL); */
/* OBSOLETE return extract_signed_integer (buf, 4); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Copy 4 bytes from GDB memory at MYADDR into inferior memory */
/* OBSOLETE at MEMADDR and put the actual address written into in */
/* OBSOLETE *ACTUAL_MEM_ADDR. */ */
/* OBSOLETE static void */
/* OBSOLETE write_register_stack (CORE_ADDR memaddr, char *myaddr, */
/* OBSOLETE CORE_ADDR *actual_mem_addr) */
/* OBSOLETE { */
/* OBSOLETE long rfb = read_register (RFB_REGNUM); */
/* OBSOLETE long rsp = read_register (RSP_REGNUM); */
/* OBSOLETE /* If we don't do this 'info register' stops in the middle. */ */
/* OBSOLETE if (memaddr >= rstack_high_address) */
/* OBSOLETE { */
/* OBSOLETE /* It's in a register, but off the end of the stack. */ */
/* OBSOLETE if (actual_mem_addr != NULL) */
/* OBSOLETE *actual_mem_addr = 0; */
/* OBSOLETE } */
/* OBSOLETE else if (memaddr < rfb) */
/* OBSOLETE { */
/* OBSOLETE /* It's in a register. */ */
/* OBSOLETE int regnum = (memaddr - rsp) / 4 + LR0_REGNUM; */
/* OBSOLETE if (regnum < LR0_REGNUM || regnum > LR0_REGNUM + 127) */
/* OBSOLETE error ("Attempt to read register stack out of range."); */
/* OBSOLETE if (myaddr != NULL) */
/* OBSOLETE write_register (regnum, *(long *) myaddr); */
/* OBSOLETE if (actual_mem_addr != NULL) */
/* OBSOLETE *actual_mem_addr = 0; */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE { */
/* OBSOLETE /* It's in the memory portion of the register stack. */ */
/* OBSOLETE if (myaddr != NULL) */
/* OBSOLETE write_memory (memaddr, myaddr, 4); */
/* OBSOLETE if (actual_mem_addr != NULL) */
/* OBSOLETE *actual_mem_addr = memaddr; */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Find register number REGNUM relative to FRAME and put its */
/* OBSOLETE (raw) contents in *RAW_BUFFER. Set *OPTIMIZED if the variable */
/* OBSOLETE was optimized out (and thus can't be fetched). If the variable */
/* OBSOLETE was fetched from memory, set *ADDRP to where it was fetched from, */
/* OBSOLETE otherwise it was fetched from a register. */
/* OBSOLETE */
/* OBSOLETE The argument RAW_BUFFER must point to aligned memory. */ */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE a29k_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp, */
/* OBSOLETE struct frame_info *frame, int regnum, */
/* OBSOLETE enum lval_type *lvalp) */
/* OBSOLETE { */
/* OBSOLETE struct frame_info *fi; */
/* OBSOLETE CORE_ADDR addr; */
/* OBSOLETE enum lval_type lval; */
/* OBSOLETE */
/* OBSOLETE if (!target_has_registers) */
/* OBSOLETE error ("No registers."); */
/* OBSOLETE */
/* OBSOLETE /* Probably now redundant with the target_has_registers check. */ */
/* OBSOLETE if (frame == 0) */
/* OBSOLETE return; */
/* OBSOLETE */
/* OBSOLETE /* Once something has a register number, it doesn't get optimized out. */ */
/* OBSOLETE if (optimized != NULL) */
/* OBSOLETE *optimized = 0; */
/* OBSOLETE if (regnum == RSP_REGNUM) */
/* OBSOLETE { */
/* OBSOLETE if (raw_buffer != NULL) */
/* OBSOLETE { */
/* OBSOLETE store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), frame->frame); */
/* OBSOLETE } */
/* OBSOLETE if (lvalp != NULL) */
/* OBSOLETE *lvalp = not_lval; */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE else if (regnum == PC_REGNUM && frame->next != NULL) */
/* OBSOLETE { */
/* OBSOLETE if (raw_buffer != NULL) */
/* OBSOLETE { */
/* OBSOLETE store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), frame->pc); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Not sure we have to do this. */ */
/* OBSOLETE if (lvalp != NULL) */
/* OBSOLETE *lvalp = not_lval; */
/* OBSOLETE */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE else if (regnum == MSP_REGNUM) */
/* OBSOLETE { */
/* OBSOLETE if (raw_buffer != NULL) */
/* OBSOLETE { */
/* OBSOLETE if (frame->next != NULL) */
/* OBSOLETE { */
/* OBSOLETE store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), */
/* OBSOLETE frame->next->saved_msp); */
/* OBSOLETE } */
/* OBSOLETE else */
/* OBSOLETE read_register_gen (MSP_REGNUM, raw_buffer); */
/* OBSOLETE } */
/* OBSOLETE /* The value may have been computed, not fetched. */ */
/* OBSOLETE if (lvalp != NULL) */
/* OBSOLETE *lvalp = not_lval; */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE else if (regnum < LR0_REGNUM || regnum >= LR0_REGNUM + 128) */
/* OBSOLETE { */
/* OBSOLETE /* These registers are not saved over procedure calls, */
/* OBSOLETE so just print out the current values. */ */
/* OBSOLETE if (raw_buffer != NULL) */
/* OBSOLETE read_register_gen (regnum, raw_buffer); */
/* OBSOLETE if (lvalp != NULL) */
/* OBSOLETE *lvalp = lval_register; */
/* OBSOLETE if (addrp != NULL) */
/* OBSOLETE *addrp = REGISTER_BYTE (regnum); */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE addr = frame->frame + (regnum - LR0_REGNUM) * 4; */
/* OBSOLETE if (raw_buffer != NULL) */
/* OBSOLETE read_register_stack (addr, raw_buffer, &addr, &lval); */
/* OBSOLETE if (lvalp != NULL) */
/* OBSOLETE *lvalp = lval; */
/* OBSOLETE if (addrp != NULL) */
/* OBSOLETE *addrp = addr; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE */
/* OBSOLETE /* Discard from the stack the innermost frame, */
/* OBSOLETE restoring all saved registers. */ */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE pop_frame (void) */
/* OBSOLETE { */
/* OBSOLETE struct frame_info *frame = get_current_frame (); */
/* OBSOLETE CORE_ADDR rfb = read_register (RFB_REGNUM); */
/* OBSOLETE CORE_ADDR gr1 = frame->frame + frame->rsize; */
/* OBSOLETE CORE_ADDR lr1; */
/* OBSOLETE CORE_ADDR original_lr0; */
/* OBSOLETE int must_fix_lr0 = 0; */
/* OBSOLETE int i; */
/* OBSOLETE */
/* OBSOLETE /* If popping a dummy frame, need to restore registers. */ */
/* OBSOLETE if (PC_IN_CALL_DUMMY (read_register (PC_REGNUM), */
/* OBSOLETE read_register (SP_REGNUM), */
/* OBSOLETE FRAME_FP (frame))) */
/* OBSOLETE { */
/* OBSOLETE int lrnum = LR0_REGNUM + DUMMY_ARG / 4; */
/* OBSOLETE for (i = 0; i < DUMMY_SAVE_SR128; ++i) */
/* OBSOLETE write_register (SR_REGNUM (i + 128), read_register (lrnum++)); */
/* OBSOLETE for (i = 0; i < DUMMY_SAVE_SR160; ++i) */
/* OBSOLETE write_register (SR_REGNUM (i + 160), read_register (lrnum++)); */
/* OBSOLETE for (i = 0; i < DUMMY_SAVE_GREGS; ++i) */
/* OBSOLETE write_register (RETURN_REGNUM + i, read_register (lrnum++)); */
/* OBSOLETE /* Restore the PCs and prepare to restore LR0. */ */
/* OBSOLETE write_register (PC_REGNUM, read_register (lrnum++)); */
/* OBSOLETE write_register (NPC_REGNUM, read_register (lrnum++)); */
/* OBSOLETE write_register (PC2_REGNUM, read_register (lrnum++)); */
/* OBSOLETE original_lr0 = read_register (lrnum++); */
/* OBSOLETE must_fix_lr0 = 1; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Restore the memory stack pointer. */ */
/* OBSOLETE write_register (MSP_REGNUM, frame->saved_msp); */
/* OBSOLETE /* Restore the register stack pointer. */ */
/* OBSOLETE write_register (GR1_REGNUM, gr1); */
/* OBSOLETE */
/* OBSOLETE /* If we popped a dummy frame, restore lr0 now that gr1 has been restored. */ */
/* OBSOLETE if (must_fix_lr0) */
/* OBSOLETE write_register (LR0_REGNUM, original_lr0); */
/* OBSOLETE */
/* OBSOLETE /* Check whether we need to fill registers. */ */
/* OBSOLETE lr1 = read_register (LR0_REGNUM + 1); */
/* OBSOLETE if (lr1 > rfb) */
/* OBSOLETE { */
/* OBSOLETE /* Fill. */ */
/* OBSOLETE int num_bytes = lr1 - rfb; */
/* OBSOLETE int i; */
/* OBSOLETE long word; */
/* OBSOLETE */
/* OBSOLETE write_register (RAB_REGNUM, read_register (RAB_REGNUM) + num_bytes); */
/* OBSOLETE write_register (RFB_REGNUM, lr1); */
/* OBSOLETE for (i = 0; i < num_bytes; i += 4) */
/* OBSOLETE { */
/* OBSOLETE /* Note: word is in host byte order. */ */
/* OBSOLETE word = read_memory_integer (rfb + i, 4); */
/* OBSOLETE write_register (LR0_REGNUM + ((rfb - gr1) % 0x80) + i / 4, word); */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE flush_cached_frames (); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* Push an empty stack frame, to record the current PC, etc. */ */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE push_dummy_frame (void) */
/* OBSOLETE { */
/* OBSOLETE long w; */
/* OBSOLETE CORE_ADDR rab, gr1; */
/* OBSOLETE CORE_ADDR msp = read_register (MSP_REGNUM); */
/* OBSOLETE int lrnum, i; */
/* OBSOLETE CORE_ADDR original_lr0; */
/* OBSOLETE */
/* OBSOLETE /* Read original lr0 before changing gr1. This order isn't really needed */
/* OBSOLETE since GDB happens to have a snapshot of all the regs and doesn't toss */
/* OBSOLETE it when gr1 is changed. But it's The Right Thing To Do. */ */
/* OBSOLETE original_lr0 = read_register (LR0_REGNUM); */
/* OBSOLETE */
/* OBSOLETE /* Allocate the new frame. */ */
/* OBSOLETE gr1 = read_register (GR1_REGNUM) - DUMMY_FRAME_RSIZE; */
/* OBSOLETE write_register (GR1_REGNUM, gr1); */
/* OBSOLETE */
/* OBSOLETE #ifdef VXWORKS_TARGET */
/* OBSOLETE /* We force re-reading all registers to get the new local registers set */
/* OBSOLETE after gr1 has been modified. This fix is due to the lack of single */
/* OBSOLETE register read/write operation in the RPC interface between VxGDB and */
/* OBSOLETE VxWorks. This really must be changed ! */ */
/* OBSOLETE */
/* OBSOLETE vx_read_register (-1); */
/* OBSOLETE */
/* OBSOLETE #endif /* VXWORK_TARGET */ */
/* OBSOLETE */
/* OBSOLETE rab = read_register (RAB_REGNUM); */
/* OBSOLETE if (gr1 < rab) */
/* OBSOLETE { */
/* OBSOLETE /* We need to spill registers. */ */
/* OBSOLETE int num_bytes = rab - gr1; */
/* OBSOLETE CORE_ADDR rfb = read_register (RFB_REGNUM); */
/* OBSOLETE int i; */
/* OBSOLETE long word; */
/* OBSOLETE */
/* OBSOLETE write_register (RFB_REGNUM, rfb - num_bytes); */
/* OBSOLETE write_register (RAB_REGNUM, gr1); */
/* OBSOLETE for (i = 0; i < num_bytes; i += 4) */
/* OBSOLETE { */
/* OBSOLETE /* Note: word is in target byte order. */ */
/* OBSOLETE read_register_gen (LR0_REGNUM + i / 4, (char *) &word); */
/* OBSOLETE write_memory (rfb - num_bytes + i, (char *) &word, 4); */
/* OBSOLETE } */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE /* There are no arguments in to the dummy frame, so we don't need */
/* OBSOLETE more than rsize plus the return address and lr1. */ */
/* OBSOLETE write_register (LR0_REGNUM + 1, gr1 + DUMMY_FRAME_RSIZE + 2 * 4); */
/* OBSOLETE */
/* OBSOLETE /* Set the memory frame pointer. */ */
/* OBSOLETE write_register (LR0_REGNUM + DUMMY_FRAME_RSIZE / 4 - 1, msp); */
/* OBSOLETE */
/* OBSOLETE /* Allocate arg_slop. */ */
/* OBSOLETE write_register (MSP_REGNUM, msp - 16 * 4); */
/* OBSOLETE */
/* OBSOLETE /* Save registers. */ */
/* OBSOLETE lrnum = LR0_REGNUM + DUMMY_ARG / 4; */
/* OBSOLETE for (i = 0; i < DUMMY_SAVE_SR128; ++i) */
/* OBSOLETE write_register (lrnum++, read_register (SR_REGNUM (i + 128))); */
/* OBSOLETE for (i = 0; i < DUMMY_SAVE_SR160; ++i) */
/* OBSOLETE write_register (lrnum++, read_register (SR_REGNUM (i + 160))); */
/* OBSOLETE for (i = 0; i < DUMMY_SAVE_GREGS; ++i) */
/* OBSOLETE write_register (lrnum++, read_register (RETURN_REGNUM + i)); */
/* OBSOLETE /* Save the PCs and LR0. */ */
/* OBSOLETE write_register (lrnum++, read_register (PC_REGNUM)); */
/* OBSOLETE write_register (lrnum++, read_register (NPC_REGNUM)); */
/* OBSOLETE write_register (lrnum++, read_register (PC2_REGNUM)); */
/* OBSOLETE */
/* OBSOLETE /* Why are we saving LR0? What would clobber it? (the dummy frame should */
/* OBSOLETE be below it on the register stack, no?). */ */
/* OBSOLETE write_register (lrnum++, original_lr0); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE */
/* OBSOLETE */
/* OBSOLETE /* */
/* OBSOLETE This routine takes three arguments and makes the cached frames look */
/* OBSOLETE as if these arguments defined a frame on the cache. This allows the */
/* OBSOLETE rest of `info frame' to extract the important arguments without much */
/* OBSOLETE difficulty. Since an individual frame on the 29K is determined by */
/* OBSOLETE three values (FP, PC, and MSP), we really need all three to do a */
/* OBSOLETE good job. */ */
/* OBSOLETE */
/* OBSOLETE struct frame_info * */
/* OBSOLETE setup_arbitrary_frame (int argc, CORE_ADDR *argv) */
/* OBSOLETE { */
/* OBSOLETE struct frame_info *frame; */
/* OBSOLETE */
/* OBSOLETE if (argc != 3) */
/* OBSOLETE error ("AMD 29k frame specifications require three arguments: rsp pc msp"); */
/* OBSOLETE */
/* OBSOLETE frame = create_new_frame (argv[0], argv[1]); */
/* OBSOLETE */
/* OBSOLETE if (!frame) */
/* OBSOLETE internal_error (__FILE__, __LINE__, */
/* OBSOLETE "create_new_frame returned invalid frame id"); */
/* OBSOLETE */
/* OBSOLETE /* Creating a new frame munges the `frame' value from the current */
/* OBSOLETE GR1, so we restore it again here. FIXME, untangle all this */
/* OBSOLETE 29K frame stuff... */ */
/* OBSOLETE frame->frame = argv[0]; */
/* OBSOLETE */
/* OBSOLETE /* Our MSP is in argv[2]. It'd be intelligent if we could just */
/* OBSOLETE save this value in the FRAME. But the way it's set up (FIXME), */
/* OBSOLETE we must save our caller's MSP. We compute that by adding our */
/* OBSOLETE memory stack frame size to our MSP. */ */
/* OBSOLETE frame->saved_msp = argv[2] + frame->msize; */
/* OBSOLETE */
/* OBSOLETE return frame; */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE int */
/* OBSOLETE gdb_print_insn_a29k (bfd_vma memaddr, disassemble_info *info) */
/* OBSOLETE { */
/* OBSOLETE if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) */
/* OBSOLETE return print_insn_big_a29k (memaddr, info); */
/* OBSOLETE else */
/* OBSOLETE return print_insn_little_a29k (memaddr, info); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE enum a29k_processor_types processor_type = a29k_unknown; */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE a29k_get_processor_type (void) */
/* OBSOLETE { */
/* OBSOLETE unsigned int cfg_reg = (unsigned int) read_register (CFG_REGNUM); */
/* OBSOLETE */
/* OBSOLETE /* Most of these don't have freeze mode. */ */
/* OBSOLETE processor_type = a29k_no_freeze_mode; */
/* OBSOLETE */
/* OBSOLETE switch ((cfg_reg >> 28) & 0xf) */
/* OBSOLETE { */
/* OBSOLETE case 0: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am29000"); */
/* OBSOLETE break; */
/* OBSOLETE case 1: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am29005"); */
/* OBSOLETE break; */
/* OBSOLETE case 2: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am29050"); */
/* OBSOLETE processor_type = a29k_freeze_mode; */
/* OBSOLETE break; */
/* OBSOLETE case 3: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am29035"); */
/* OBSOLETE break; */
/* OBSOLETE case 4: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am29030"); */
/* OBSOLETE break; */
/* OBSOLETE case 5: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am2920*"); */
/* OBSOLETE break; */
/* OBSOLETE case 6: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am2924*"); */
/* OBSOLETE break; */
/* OBSOLETE case 7: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an Am29040"); */
/* OBSOLETE break; */
/* OBSOLETE default: */
/* OBSOLETE fprintf_filtered (gdb_stderr, "Remote debugging an unknown Am29k\n"); */
/* OBSOLETE /* Don't bother to print the revision. */ */
/* OBSOLETE return; */
/* OBSOLETE } */
/* OBSOLETE fprintf_filtered (gdb_stderr, " revision %c\n", 'A' + ((cfg_reg >> 24) & 0x0f)); */
/* OBSOLETE } */
/* OBSOLETE */
/* OBSOLETE #ifdef GET_LONGJMP_TARGET */
/* OBSOLETE /* Figure out where the longjmp will land. We expect that we have just entered */
/* OBSOLETE longjmp and haven't yet setup the stack frame, so the args are still in the */
/* OBSOLETE output regs. lr2 (LR2_REGNUM) points at the jmp_buf structure from which we */
/* OBSOLETE extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. */
/* OBSOLETE This routine returns true on success */ */
/* OBSOLETE */
/* OBSOLETE int */
/* OBSOLETE get_longjmp_target (CORE_ADDR *pc) */
/* OBSOLETE { */
/* OBSOLETE CORE_ADDR jb_addr; */
/* OBSOLETE char buf[sizeof (CORE_ADDR)]; */
/* OBSOLETE */
/* OBSOLETE jb_addr = read_register (LR2_REGNUM); */
/* OBSOLETE */
/* OBSOLETE if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, (char *) buf, */
/* OBSOLETE sizeof (CORE_ADDR))) */
/* OBSOLETE return 0; */
/* OBSOLETE */
/* OBSOLETE *pc = extract_address ((PTR) buf, sizeof (CORE_ADDR)); */
/* OBSOLETE return 1; */
/* OBSOLETE } */
/* OBSOLETE #endif /* GET_LONGJMP_TARGET */ */
/* OBSOLETE */
/* OBSOLETE void */
/* OBSOLETE _initialize_a29k_tdep (void) */
/* OBSOLETE { */
/* OBSOLETE extern CORE_ADDR text_end; */
/* OBSOLETE */
/* OBSOLETE tm_print_insn = gdb_print_insn_a29k; */
/* OBSOLETE */
/* OBSOLETE /* FIXME, there should be a way to make a CORE_ADDR variable settable. */ */
/* OBSOLETE add_show_from_set */
/* OBSOLETE (add_set_cmd ("rstack_high_address", class_support, var_uinteger, */
/* OBSOLETE (char *) &rstack_high_address, */
/* OBSOLETE "Set top address in memory of the register stack.\n\ */
/* OBSOLETE Attempts to access registers saved above this address will be ignored\n\ */
/* OBSOLETE or will produce the value -1.", &setlist), */
/* OBSOLETE &showlist); */
/* OBSOLETE */
/* OBSOLETE /* FIXME, there should be a way to make a CORE_ADDR variable settable. */ */
/* OBSOLETE add_show_from_set */
/* OBSOLETE (add_set_cmd ("call_scratch_address", class_support, var_uinteger, */
/* OBSOLETE (char *) &text_end, */
/* OBSOLETE "Set address in memory where small amounts of RAM can be used\n\ */
/* OBSOLETE when making function calls into the inferior.", &setlist), */
/* OBSOLETE &showlist); */
/* OBSOLETE } */
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