diff options
| author | Andrew Cagney <cagney@redhat.com> | 2002-01-06 15:02:01 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@redhat.com> | 2002-01-06 15:02:01 +0000 |
| commit | 9b4ff27668a0c3a983cb8d9056380b400551ea64 (patch) | |
| tree | 012c997e27485365ff232163a7d0e40a49b84034 /gdb/config | |
| parent | 9fbfe2dc646f029caeb2b69f597bfd4acb2954fa (diff) | |
| download | fsf-binutils-gdb-9b4ff27668a0c3a983cb8d9056380b400551ea64.zip fsf-binutils-gdb-9b4ff27668a0c3a983cb8d9056380b400551ea64.tar.gz fsf-binutils-gdb-9b4ff27668a0c3a983cb8d9056380b400551ea64.tar.bz2 | |
* 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.
Diffstat (limited to 'gdb/config')
| -rw-r--r-- | gdb/config/a29k/a29k-udi.mt | 10 | ||||
| -rw-r--r-- | gdb/config/a29k/a29k.mt | 10 | ||||
| -rw-r--r-- | gdb/config/a29k/tm-a29k.h | 1444 | ||||
| -rw-r--r-- | gdb/config/a29k/tm-vx29k.h | 460 | ||||
| -rw-r--r-- | gdb/config/a29k/vx29k.mt | 8 |
5 files changed, 966 insertions, 966 deletions
diff --git a/gdb/config/a29k/a29k-udi.mt b/gdb/config/a29k/a29k-udi.mt index 15b33e6..6fe45b0 100644 --- a/gdb/config/a29k/a29k-udi.mt +++ b/gdb/config/a29k/a29k-udi.mt @@ -1,5 +1,5 @@ -# Target: AMD 29000 on EB29K board over a serial line -TDEPFILES= a29k-tdep.o remote-udi.o udip2soc.o udr.o udi2go32.o -TM_FILE= tm-a29k.h - -MT_CFLAGS = $(HOST_IPC) +# OBSOLETE # Target: AMD 29000 on EB29K board over a serial line +# OBSOLETE TDEPFILES= a29k-tdep.o remote-udi.o udip2soc.o udr.o udi2go32.o +# OBSOLETE TM_FILE= tm-a29k.h +# OBSOLETE +# OBSOLETE MT_CFLAGS = $(HOST_IPC) diff --git a/gdb/config/a29k/a29k.mt b/gdb/config/a29k/a29k.mt index a3f5910..b235c05 100644 --- a/gdb/config/a29k/a29k.mt +++ b/gdb/config/a29k/a29k.mt @@ -1,5 +1,5 @@ -# Target: AMD 29000 -TDEPFILES= a29k-tdep.o remote-eb.o remote-adapt.o -TM_FILE= tm-a29k.h - -MT_CFLAGS = -DNO_HIF_SUPPORT +# OBSOLETE # Target: AMD 29000 +# OBSOLETE TDEPFILES= a29k-tdep.o remote-eb.o remote-adapt.o +# OBSOLETE TM_FILE= tm-a29k.h +# OBSOLETE +# OBSOLETE MT_CFLAGS = -DNO_HIF_SUPPORT diff --git a/gdb/config/a29k/tm-a29k.h b/gdb/config/a29k/tm-a29k.h index 3caff63..c296f59 100644 --- a/gdb/config/a29k/tm-a29k.h +++ b/gdb/config/a29k/tm-a29k.h @@ -1,722 +1,722 @@ -/* Parameters for target machine AMD 29000, for GDB, the GNU debugger. - Copyright 1990, 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, - 2001 Free Software Foundation, Inc. - Contributed by Cygnus Support. Written by Jim Kingdon. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "regcache.h" - -/* Parameters for an EB29K (a board which plugs into a PC and is - accessed through EBMON software running on the PC, which we - use as we'd use a remote stub (see remote-eb.c). - - If gdb is ported to other a29k machines/systems, the - machine/system-specific parts should be removed from this file (a - la tm-m68k.h). */ - -/* Byte order is configurable, but this machine runs big-endian. */ -#define TARGET_BYTE_ORDER BFD_ENDIAN_BIG - -/* Floating point uses IEEE representations. */ -#define IEEE_FLOAT (1) - -/* Recognize our magic number. */ -#define BADMAG(x) ((x).f_magic != 0572) - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(pc) (a29k_skip_prologue (pc)) -CORE_ADDR a29k_skip_prologue (); - -/* Immediately after a function call, return the saved pc. - Can't go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. */ - -#define SAVED_PC_AFTER_CALL(frame) ((frame->flags & TRANSPARENT_FRAME) \ - ? read_register (TPC_REGNUM) \ - : read_register (LR0_REGNUM)) - -/* Stack grows downward. */ - -#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) - -/* Stack must be aligned on 32-bit boundaries when synthesizing - function calls. */ - -#define STACK_ALIGN(ADDR) (((ADDR) + 3) & ~3) - -/* Sequence of bytes for breakpoint instruction. */ -/* ASNEQ 0x50, gr1, gr1 - The trap number 0x50 is chosen arbitrarily. - We let the command line (or previously included files) override this - setting. */ -#ifndef BREAKPOINT -#if TARGET_BYTE_ORDER == BFD_ENDIAN_BIG -#define BREAKPOINT {0x72, 0x50, 0x01, 0x01} -#else /* Target is little-endian. */ -#define BREAKPOINT {0x01, 0x01, 0x50, 0x72} -#endif /* Target is little-endian. */ -#endif /* BREAKPOINT */ - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 0 - -/* Say how long (ordinary) registers are. This is a piece of bogosity - used in push_word and a few other places; REGISTER_RAW_SIZE is the - real way to know how big a register is. */ - -#define REGISTER_SIZE 4 - -/* Allow the register declarations here to be overridden for remote - kernel debugging. */ -#if !defined (REGISTER_NAMES) - -/* Number of machine registers */ - -#define NUM_REGS 205 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. - - FIXME, add floating point registers and support here. - - Also note that this list does not attempt to deal with kernel - debugging (in which the first 32 registers are gr64-gr95). */ - -#define REGISTER_NAMES \ -{"gr96", "gr97", "gr98", "gr99", "gr100", "gr101", "gr102", "gr103", "gr104", \ - "gr105", "gr106", "gr107", "gr108", "gr109", "gr110", "gr111", "gr112", \ - "gr113", "gr114", "gr115", "gr116", "gr117", "gr118", "gr119", "gr120", \ - "gr121", "gr122", "gr123", "gr124", "gr125", "gr126", "gr127", \ - "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", "lr8", "lr9", \ - "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", "lr16", "lr17", "lr18", \ - "lr19", "lr20", "lr21", "lr22", "lr23", "lr24", "lr25", "lr26", "lr27", \ - "lr28", "lr29", "lr30", "lr31", "lr32", "lr33", "lr34", "lr35", "lr36", \ - "lr37", "lr38", "lr39", "lr40", "lr41", "lr42", "lr43", "lr44", "lr45", \ - "lr46", "lr47", "lr48", "lr49", "lr50", "lr51", "lr52", "lr53", "lr54", \ - "lr55", "lr56", "lr57", "lr58", "lr59", "lr60", "lr61", "lr62", "lr63", \ - "lr64", "lr65", "lr66", "lr67", "lr68", "lr69", "lr70", "lr71", "lr72", \ - "lr73", "lr74", "lr75", "lr76", "lr77", "lr78", "lr79", "lr80", "lr81", \ - "lr82", "lr83", "lr84", "lr85", "lr86", "lr87", "lr88", "lr89", "lr90", \ - "lr91", "lr92", "lr93", "lr94", "lr95", "lr96", "lr97", "lr98", "lr99", \ - "lr100", "lr101", "lr102", "lr103", "lr104", "lr105", "lr106", "lr107", \ - "lr108", "lr109", "lr110", "lr111", "lr112", "lr113", "lr114", "lr115", \ - "lr116", "lr117", "lr118", "lr119", "lr120", "lr121", "lr122", "lr123", \ - "lr124", "lr125", "lr126", "lr127", \ - "AI0", "AI1", "AI2", "AI3", "AI4", "AI5", "AI6", "AI7", "AI8", "AI9", \ - "AI10", "AI11", "AI12", "AI13", "AI14", "AI15", "FP", \ - "bp", "fc", "cr", "q", \ - "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr", \ - "pc0", "pc1", "pc2", "mmu", "lru", "fpe", "inte", "fps", "exo", "gr1", \ - "alu", "ipc", "ipa", "ipb" } - -/* - * Converts an sdb register number to an internal gdb register number. - * Currently under epi, gr96->0...gr127->31...lr0->32...lr127->159, or... - * gr64->0...gr95->31, lr0->32...lr127->159. - */ -#define SDB_REG_TO_REGNUM(value) \ - (((value) >= 96 && (value) <= 127) ? ((value) - 96) : \ - ((value) >= 128 && (value) <= 255) ? ((value) - 128 + LR0_REGNUM) : \ - (value)) - -/* - * Provide the processor register numbers of some registers that are - * expected/written in instructions that might change under different - * register sets. Namely, gcc can compile (-mkernel-registers) so that - * it uses gr64-gr95 in stead of gr96-gr127. - */ -#define MSP_HW_REGNUM 125 /* gr125 */ -#define RAB_HW_REGNUM 126 /* gr126 */ - -/* Convert Processor Special register #x to REGISTER_NAMES register # */ -#define SR_REGNUM(x) \ - ((x) < 15 ? VAB_REGNUM + (x) \ - : (x) >= 128 && (x) < 131 ? IPC_REGNUM + (x) - 128 \ - : (x) == 131 ? Q_REGNUM \ - : (x) == 132 ? ALU_REGNUM \ - : (x) >= 133 && (x) < 136 ? BP_REGNUM + (x) - 133 \ - : (x) >= 160 && (x) < 163 ? FPE_REGNUM + (x) - 160 \ - : (x) == 164 ? EXO_REGNUM \ - : (error ("Internal error in SR_REGNUM"), 0)) -#define GR96_REGNUM 0 - -/* Define the return register separately, so it can be overridden for - kernel procedure calling conventions. */ -#define RETURN_REGNUM GR96_REGNUM -#define GR1_REGNUM 200 -/* This needs to be the memory stack pointer, not the register stack pointer, - to make call_function work right. */ -#define SP_REGNUM MSP_REGNUM -#define FP_REGNUM 33 /* lr1 */ - -/* Return register for transparent calling convention (gr122). */ -#define TPC_REGNUM (122 - 96 + GR96_REGNUM) - -/* Large Return Pointer (gr123). */ -#define LRP_REGNUM (123 - 96 + GR96_REGNUM) - -/* Static link pointer (gr124). */ -#define SLP_REGNUM (124 - 96 + GR96_REGNUM) - -/* Memory Stack Pointer (gr125). */ -#define MSP_REGNUM (125 - 96 + GR96_REGNUM) - -/* Register allocate bound (gr126). */ -#define RAB_REGNUM (126 - 96 + GR96_REGNUM) - -/* Register Free Bound (gr127). */ -#define RFB_REGNUM (127 - 96 + GR96_REGNUM) - -/* Register Stack Pointer. */ -#define RSP_REGNUM GR1_REGNUM -#define LR0_REGNUM 32 -#define BP_REGNUM 177 -#define FC_REGNUM 178 -#define CR_REGNUM 179 -#define Q_REGNUM 180 -#define VAB_REGNUM 181 -#define OPS_REGNUM (VAB_REGNUM + 1) -#define CPS_REGNUM (VAB_REGNUM + 2) -#define CFG_REGNUM (VAB_REGNUM + 3) -#define CHA_REGNUM (VAB_REGNUM + 4) -#define CHD_REGNUM (VAB_REGNUM + 5) -#define CHC_REGNUM (VAB_REGNUM + 6) -#define RBP_REGNUM (VAB_REGNUM + 7) -#define TMC_REGNUM (VAB_REGNUM + 8) -#define TMR_REGNUM (VAB_REGNUM + 9) -#define NPC_REGNUM (VAB_REGNUM + 10) /* pc0 */ -#define PC_REGNUM (VAB_REGNUM + 11) /* pc1 */ -#define PC2_REGNUM (VAB_REGNUM + 12) -#define MMU_REGNUM (VAB_REGNUM + 13) -#define LRU_REGNUM (VAB_REGNUM + 14) -#define FPE_REGNUM (VAB_REGNUM + 15) -#define INTE_REGNUM (VAB_REGNUM + 16) -#define FPS_REGNUM (VAB_REGNUM + 17) -#define EXO_REGNUM (VAB_REGNUM + 18) -/* gr1 is defined above as 200 = VAB_REGNUM + 19 */ -#define ALU_REGNUM (VAB_REGNUM + 20) -#define PS_REGNUM ALU_REGNUM -#define IPC_REGNUM (VAB_REGNUM + 21) -#define IPA_REGNUM (VAB_REGNUM + 22) -#define IPB_REGNUM (VAB_REGNUM + 23) - -#endif /* !defined(REGISTER_NAMES) */ - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES (NUM_REGS * 4) - -/* Index within `registers' of the first byte of the space for - register N. */ -#define REGISTER_BYTE(N) ((N)*4) - -/* Number of bytes of storage in the actual machine representation - for register N. */ - -/* All regs are 4 bytes. */ - -#define REGISTER_RAW_SIZE(N) (4) - -/* Number of bytes of storage in the program's representation - for register N. */ - -/* All regs are 4 bytes. */ - -#define REGISTER_VIRTUAL_SIZE(N) (4) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE (4) - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE (4) - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) \ - (((N) == PC_REGNUM || (N) == LRP_REGNUM || (N) == SLP_REGNUM \ - || (N) == MSP_REGNUM || (N) == RAB_REGNUM || (N) == RFB_REGNUM \ - || (N) == GR1_REGNUM || (N) == FP_REGNUM || (N) == LR0_REGNUM \ - || (N) == NPC_REGNUM || (N) == PC2_REGNUM) \ - ? lookup_pointer_type (builtin_type_void) : builtin_type_int) - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ -/* On the a29k the LRP points to the part of the structure beyond the first - 16 words. */ -#define STORE_STRUCT_RETURN(ADDR, SP) \ - write_register (LRP_REGNUM, (ADDR) + 16 * 4); - -/* Should call_function allocate stack space for a struct return? */ -/* On the a29k objects over 16 words require the caller to allocate space. */ -extern use_struct_convention_fn a29k_use_struct_convention; -#define USE_STRUCT_CONVENTION(gcc_p, type) a29k_use_struct_convention (gcc_p, type) - -/* Extract from an array REGBUF containing the (raw) register state - a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - { \ - int reg_length = TYPE_LENGTH (TYPE); \ - if (reg_length > 16 * 4) \ - { \ - reg_length = 16 * 4; \ - read_memory (*((int *)(REGBUF) + LRP_REGNUM), (VALBUF) + 16 * 4, \ - TYPE_LENGTH (TYPE) - 16 * 4); \ - } \ - memcpy ((VALBUF), ((int *)(REGBUF))+RETURN_REGNUM, reg_length); \ - } - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - { \ - int reg_length = TYPE_LENGTH (TYPE); \ - if (reg_length > 16 * 4) \ - { \ - reg_length = 16 * 4; \ - write_memory (read_register (LRP_REGNUM), \ - (char *)(VALBUF) + 16 * 4, \ - TYPE_LENGTH (TYPE) - 16 * 4); \ - } \ - write_register_bytes (REGISTER_BYTE (RETURN_REGNUM), (char *)(VALBUF), \ - TYPE_LENGTH (TYPE)); \ - } - /* *INDENT-OFF* */ -/* The a29k user's guide documents well what the stacks look like. - But what isn't so clear there is how this interracts with the - symbols, or with GDB. - In the following saved_msp, saved memory stack pointer (which functions - as a memory frame pointer), means either - a register containing the memory frame pointer or, in the case of - functions with fixed size memory frames (i.e. those who don't use - alloca()), the result of the calculation msp + msize. - - LOC_ARG, LOC_LOCAL - For GCC, these are relative to saved_msp. - For high C, these are relative to msp (making alloca impossible). - LOC_REGISTER, LOC_REGPARM - The register number is the number at the - time the function is running (after the prologue), or in the case - of LOC_REGPARM, may be a register number in the range 160-175. - - The compilers do things like store an argument into memory, and then put out - a LOC_ARG for it, or put it into global registers and put out a - LOC_REGPARM. Thus is it important to execute the first line of - code (i.e. the line of the open brace, i.e. the prologue) of a function - before trying to print arguments or anything. - - The following diagram attempts to depict what is going on in memory - (see also the _a29k user's guide_) and also how that interacts with - GDB frames. We arbitrarily pick fci->frame to point the same place - as the register stack pointer; since we set it ourself in - INIT_EXTRA_FRAME_INFO, and access it only through the FRAME_* - macros, it doesn't really matter exactly how we - do it. However, note that FRAME_FP is used in two ways in GDB: - (1) as a "magic cookie" which uniquely identifies frames (even over - calls to the inferior), (2) (in PC_IN_CALL_DUMMY [ON_STACK]) - as the value of SP_REGNUM before the dummy frame was pushed. These - two meanings would be incompatible for the a29k if we defined - CALL_DUMMY_LOCATION == ON_STACK (but we don't, so don't worry about it). - Also note that "lr1" below, while called a frame pointer - in the user's guide, has only one function: To determine whether - registers need to be filled in the function epilogue. - - Consider the code: - < call bar> - loc1: . . . - bar: sub gr1,gr1,rsize_b - . . . - add mfp,msp,0 - sub msp,msp,msize_b - . . . - < call foo > - loc2: . . . - foo: sub gr1,gr1,rsize_f - . . . - add mfp,msp,0 - sub msp,msp,msize_f - . . . - loc3: < suppose the inferior stops here > - - memory stack register stack - | | |____________| - | | |____loc1____| - +------->|___________| | | ^ - | | ^ | | locals_b | | - | | | | |____________| | - | | | | | | | rsize_b - | | | msize_b | | args_to_f | | - | | | | |____________| | - | | | | |____lr1_____| V - | | V | |____loc2____|<----------------+ - | +--->|___________|<---------mfp | ^ | - | | | ^ | | locals_f | | | - | | | | msize_f | |____________| | | - | | | | | | | | rsize_f | - | | | V | | args | | | - | | |___________|<msp |____________| | | - | | |_____lr1____| V | - | | |___garbage__| <- gr1 <----+ | - | | | | - | | | | - | | pc=loc3 | | - | | | | - | | | | - | | frame cache | | - | | |_________________| | | - | | |rsize=rsize_b | | | - | | |msize=msize_b | | | - +---|--------saved_msp | | | - | |frame------------------------------------|---+ - | |pc=loc2 | | - | |_________________| | - | |rsize=rsize_f | | - | |msize=msize_f | | - +--------saved_msp | | - |frame------------------------------------+ - |pc=loc3 | - |_________________| - - So, is that sufficiently confusing? Welcome to the 29000. - Notes: - * The frame for foo uses a memory frame pointer but the frame for - bar does not. In the latter case the saved_msp is - computed by adding msize to the saved_msp of the - next frame. - * msize is in the frame cache only for high C's sake. */ -/* *INDENT-ON* */ - - -void read_register_stack (); -long read_register_stack_integer (); - -#define FRAME_INIT_SAVED_REGS(fi) /*no-op */ - -#define EXTRA_FRAME_INFO \ - CORE_ADDR saved_msp; \ - unsigned int rsize; \ - unsigned int msize; \ - unsigned char flags; - -/* Bits for flags in EXTRA_FRAME_INFO */ -#define TRANSPARENT_FRAME 0x1 /* This is a transparent frame */ -#define MFP_USED 0x2 /* A memory frame pointer is used */ - -/* Because INIT_FRAME_PC gets passed fromleaf, that's where we init - not only ->pc and ->frame, but all the extra stuff, when called from - get_prev_frame, that is. */ -#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci) -void init_extra_frame_info (); - -#define INIT_FRAME_PC(fromleaf, fci) init_frame_pc(fromleaf, fci) -void init_frame_pc (); - - -/* FRAME_CHAIN takes a FRAME - and produces the frame's chain-pointer. - - However, if FRAME_CHAIN_VALID returns zero, - it means the given frame is the outermost one and has no caller. */ - -/* On the a29k, the nominal address of a frame is the address on the - register stack of the return address (the one next to the incoming - arguments, not down at the bottom so nominal address == stack pointer). - - GDB expects "nominal address" to equal contents of FP_REGNUM, - at least when it comes time to create the innermost frame. - However, that doesn't work for us, so when creating the innermost - frame we set ->frame ourselves in INIT_EXTRA_FRAME_INFO. */ - -/* These are mostly dummies for the a29k because INIT_FRAME_PC - sets prev->frame instead. */ -/* If rsize is zero, we must be at end of stack (or otherwise hosed). - If we don't check rsize, we loop forever if we see rsize == 0. */ -#define FRAME_CHAIN(thisframe) \ - ((thisframe)->rsize == 0 \ - ? 0 \ - : (thisframe)->frame + (thisframe)->rsize) - -/* Determine if the frame has a 'previous' and back-traceable frame. */ -#define FRAME_IS_UNCHAINED(frame) ((frame)->flags & TRANSPARENT_FRAME) - -/* Find the previous frame of a transparent routine. - * For now lets not try and trace through a transparent routine (we might - * have to assume that all transparent routines are traps). - */ -#define FIND_PREV_UNCHAINED_FRAME(frame) 0 - -/* Define other aspects of the stack frame. */ - -/* An expression that tells us whether the function invocation represented - by FI does not have a frame on the stack associated with it. */ -#define FRAMELESS_FUNCTION_INVOCATION(FI) \ - (frameless_look_for_prologue (FI)) - -/* Saved pc (i.e. return address). */ -#define FRAME_SAVED_PC(fraim) \ - (read_register_stack_integer ((fraim)->frame + (fraim)->rsize, 4)) - -/* Local variables (i.e. LOC_LOCAL) are on the memory stack, with their - offsets being relative to the memory stack pointer (high C) or - saved_msp (gcc). */ - -#define FRAME_LOCALS_ADDRESS(fi) frame_locals_address (fi) -extern CORE_ADDR frame_locals_address (); - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ -/* We tried going to the effort of finding the tags word and getting - the argcount field from it, to support debugging assembler code. - Problem was, the "argcount" field never did hold the argument - count. */ -#define FRAME_NUM_ARGS(fi) (-1) - -#define FRAME_ARGS_ADDRESS(fi) FRAME_LOCALS_ADDRESS (fi) - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 0 - -/* Provide our own get_saved_register. HAVE_REGISTER_WINDOWS is insufficient - because registers get renumbered on the a29k without getting saved. */ - -struct frame_info; -void a29k_get_saved_register (char *raw_buffer, int *optimized, - CORE_ADDR * addrp, struct frame_info *frame, - int regnum, enum lval_type *lvalp); -#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ - a29k_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) - -/* Call function stuff. */ -/* *INDENT-OFF* */ -/* The dummy frame looks like this (see also the general frame picture - above): - - register stack - - | | frame for function - | locals_sproc | executing at time - |________________| of call_function. - | | We must not disturb - | args_out_sproc | it. - memory stack |________________| - |____lr1_sproc___|<-+ - | | |__retaddr_sproc_| | <-- gr1 (at start) - |____________|<-msp 0 <-----------mfp_dummy_____| | - | | (at start) | save regs | | - | arg_slop | | pc0,pc1 | | - | | | pc2,lr0 sproc | | - | (16 words) | | gr96-gr124 | | - |____________|<-msp 1--after | sr160-sr162 | | - | | PUSH_DUMMY_FRAME| sr128-sr135 | | - | struct ret | |________________| | - | 17+ | | | | - |____________|<- lrp | args_out_dummy | | - | struct ret | | (16 words) | | - | 16 | |________________| | - | (16 words) | |____lr1_dummy___|--+ - |____________|<- msp 2--after |_retaddr_dummy__|<- gr1 after - | | struct ret | | PUSH_DUMMY_FRAME - | margs17+ | area allocated | locals_inf | - | | |________________| called - |____________|<- msp 4--when | | function's - | | inf called | args_out_inf | frame (set up - | margs16 | |________________| by called - | (16 words) | |_____lr1_inf____| function). - |____________|<- msp 3--after | . | - | | args pushed | . | - | | | . | - | | - - arg_slop: This area is so that when the call dummy adds 16 words to - the msp, it won't end up larger than mfp_dummy (it is needed in the - case where margs and struct_ret do not add up to at least 16 words). - struct ret: This area is allocated by GDB if the return value is more - than 16 words. struct ret_16 is not used on the a29k. - margs: Pushed by GDB. The call dummy copies the first 16 words to - args_out_dummy. - retaddr_sproc: Contains the PC at the time we call the function. - set by PUSH_DUMMY_FRAME and read by POP_FRAME. - retaddr_dummy: This points to a breakpoint instruction in the dummy. */ -/* *INDENT-ON* */ - - - -/* Rsize for dummy frame, in bytes. */ - -/* Bytes for outgoing args, lr1, and retaddr. */ -#define DUMMY_ARG (2 * 4 + 16 * 4) - -/* Number of special registers (sr128-) to save. */ -#define DUMMY_SAVE_SR128 8 -/* Number of special registers (sr160-) to save. */ -#define DUMMY_SAVE_SR160 3 -/* Number of general (gr96- or gr64-) registers to save. */ -#define DUMMY_SAVE_GREGS 29 - -#define DUMMY_FRAME_RSIZE \ -(4 /* mfp_dummy */ \ - + 4 * 4 /* pc0, pc1, pc2, lr0 */ \ - + DUMMY_SAVE_GREGS * 4 \ - + DUMMY_SAVE_SR160 * 4 \ - + DUMMY_SAVE_SR128 * 4 \ - + DUMMY_ARG \ - + 4 /* pad to doubleword */ ) - -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME push_dummy_frame() -extern void push_dummy_frame (); - -/* Discard from the stack the innermost frame, - restoring all saved registers. */ - -#define POP_FRAME pop_frame() -extern void pop_frame (); - -/* This sequence of words is the instructions - mtsrim cr, 15 - loadm 0, 0, lr2, msp ; load first 16 words of arguments into registers - add msp, msp, 16 * 4 ; point to the remaining arguments - CONST_INSN: - const lr0,inf ; (replaced by half of target addr) - consth lr0,inf ; (replaced by other half of target addr) - calli lr0, lr0 - aseq 0x40,gr1,gr1 ; nop - BREAKPT_INSN: - asneq 0x50,gr1,gr1 ; breakpoint (replaced by local breakpoint insn) - */ - -#error "This file is broken. GDB does not define HOST_BYTE_ORDER." -#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER -#define BS(const) const -#else -#define BS(const) (((const) & 0xff) << 24) | \ - (((const) & 0xff00) << 8) | \ - (((const) & 0xff0000) >> 8) | \ - (((const) & 0xff000000) >> 24) -#endif - -/* Position of the "const" and blkt instructions within CALL_DUMMY in bytes. */ -#define CONST_INSN (3 * 4) -#define BREAKPT_INSN (7 * 4) -#define CALL_DUMMY { \ - BS(0x0400870f),\ - BS(0x36008200|(MSP_HW_REGNUM)), \ - BS(0x15000040|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16)), \ - BS(0x03ff80ff), \ - BS(0x02ff80ff), \ - BS(0xc8008080), \ - BS(0x70400101), \ - BS(0x72500101)} -#define CALL_DUMMY_LENGTH (8 * 4) - -#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */ - -/* Helper macro for FIX_CALL_DUMMY. WORDP is a long * which points to a - word in target byte order; bits 0-7 and 16-23 of *WORDP are replaced with - bits 0-7 and 8-15 of DATA (which is in host byte order). */ - -#if TARGET_BYTE_ORDER == BFD_ENDIAN_BIG -#define STUFF_I16(WORDP, DATA) \ - { \ - *((char *)(WORDP) + 3) = ((DATA) & 0xff);\ - *((char *)(WORDP) + 1) = (((DATA) >> 8) & 0xff);\ - } -#else /* Target is little endian. */ -#define STUFF_I16(WORDP, DATA) \ - { -*(char *) (WORDP) = ((DATA) & 0xff); -*((char *) (WORDP) + 2) = (((DATA) >> 8) & 0xff); -} -#endif /* Target is little endian. */ - -/* Insert the specified number of args and function address - into a call sequence of the above form stored at DUMMYNAME. */ - -/* Currently this stuffs in the address of the function that we are calling. - Since different a29k systems use different breakpoint instructions, it - also stuffs BREAKPOINT in the right place (to avoid having to - duplicate CALL_DUMMY in each tm-*.h file). */ - -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ - {\ - STUFF_I16((char *)dummyname + CONST_INSN, fun); \ - STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16); \ - /* FIXME memcpy ((char *)(dummyname) + BREAKPT_INSN, break_insn, 4); */ \ - } - -/* a29k architecture has separate data & instruction memories -- wired to - different pins on the chip -- and can't execute the data memory. - Also, there should be space after text_end; - we won't get a SIGSEGV or scribble on data space. */ - -#define CALL_DUMMY_LOCATION AFTER_TEXT_END - -/* Because of this, we need (as a kludge) to know the addresses of the - text section. */ - -#define NEED_TEXT_START_END 1 - -/* How to translate register numbers in the .stab's into gdb's internal register - numbers. We don't translate them, but we warn if an invalid register - number is seen. Note that FIXME, we use the value "sym" as an implicit - argument in printing the error message. It happens to be available where - this macro is used. (This macro definition appeared in a late revision - of gdb-3.91.6 and is not well tested. Also, it should be a "complaint".) */ - -#define STAB_REG_TO_REGNUM(num) \ - (((num) > LR0_REGNUM + 127) \ - ? fprintf(stderr, \ - "Invalid register number %d in symbol table entry for %s\n", \ - (num), SYMBOL_SOURCE_NAME (sym)), (num) \ - : (num)) - -extern enum a29k_processor_types -{ - a29k_unknown, - - /* Bit 0x400 of the CPS does *not* identify freeze mode, i.e. 29000, - 29030, etc. */ - a29k_no_freeze_mode, - - /* Bit 0x400 of the CPS does identify freeze mode, i.e. 29050. */ - a29k_freeze_mode -} -processor_type; - -/* We need three arguments for a general frame specification for the - "frame" or "info frame" command. */ - -#define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv) -extern struct frame_info *setup_arbitrary_frame (int, CORE_ADDR *); +/* OBSOLETE /* Parameters for target machine AMD 29000, for GDB, the GNU debugger. */ +/* OBSOLETE Copyright 1990, 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, */ +/* OBSOLETE 2001 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 "regcache.h" */ +/* OBSOLETE */ +/* OBSOLETE /* Parameters for an EB29K (a board which plugs into a PC and is */ +/* OBSOLETE accessed through EBMON software running on the PC, which we */ +/* OBSOLETE use as we'd use a remote stub (see remote-eb.c). */ +/* OBSOLETE */ +/* OBSOLETE If gdb is ported to other a29k machines/systems, the */ +/* OBSOLETE machine/system-specific parts should be removed from this file (a */ +/* OBSOLETE la tm-m68k.h). */ */ +/* OBSOLETE */ +/* OBSOLETE /* Byte order is configurable, but this machine runs big-endian. */ */ +/* OBSOLETE #define TARGET_BYTE_ORDER BFD_ENDIAN_BIG */ +/* OBSOLETE */ +/* OBSOLETE /* Floating point uses IEEE representations. */ */ +/* OBSOLETE #define IEEE_FLOAT (1) */ +/* OBSOLETE */ +/* OBSOLETE /* Recognize our magic number. */ */ +/* OBSOLETE #define BADMAG(x) ((x).f_magic != 0572) */ +/* OBSOLETE */ +/* OBSOLETE /* Offset from address of function to start of its code. */ +/* OBSOLETE Zero on most machines. */ */ +/* OBSOLETE */ +/* OBSOLETE #define FUNCTION_START_OFFSET 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Advance PC across any function entry prologue instructions */ +/* OBSOLETE to reach some "real" code. */ */ +/* OBSOLETE */ +/* OBSOLETE #define SKIP_PROLOGUE(pc) (a29k_skip_prologue (pc)) */ +/* OBSOLETE CORE_ADDR a29k_skip_prologue (); */ +/* OBSOLETE */ +/* OBSOLETE /* Immediately after a function call, return the saved pc. */ +/* OBSOLETE Can't go through the frames for this because on some machines */ +/* OBSOLETE the new frame is not set up until the new function executes */ +/* OBSOLETE some instructions. */ */ +/* OBSOLETE */ +/* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) ((frame->flags & TRANSPARENT_FRAME) \ */ +/* OBSOLETE ? read_register (TPC_REGNUM) \ */ +/* OBSOLETE : read_register (LR0_REGNUM)) */ +/* OBSOLETE */ +/* OBSOLETE /* Stack grows downward. */ */ +/* OBSOLETE */ +/* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */ +/* OBSOLETE */ +/* OBSOLETE /* Stack must be aligned on 32-bit boundaries when synthesizing */ +/* OBSOLETE function calls. */ */ +/* OBSOLETE */ +/* OBSOLETE #define STACK_ALIGN(ADDR) (((ADDR) + 3) & ~3) */ +/* OBSOLETE */ +/* OBSOLETE /* Sequence of bytes for breakpoint instruction. */ */ +/* OBSOLETE /* ASNEQ 0x50, gr1, gr1 */ +/* OBSOLETE The trap number 0x50 is chosen arbitrarily. */ +/* OBSOLETE We let the command line (or previously included files) override this */ +/* OBSOLETE setting. */ */ +/* OBSOLETE #ifndef BREAKPOINT */ +/* OBSOLETE #if TARGET_BYTE_ORDER == BFD_ENDIAN_BIG */ +/* OBSOLETE #define BREAKPOINT {0x72, 0x50, 0x01, 0x01} */ +/* OBSOLETE #else /* Target is little-endian. */ */ +/* OBSOLETE #define BREAKPOINT {0x01, 0x01, 0x50, 0x72} */ +/* OBSOLETE #endif /* Target is little-endian. */ */ +/* OBSOLETE #endif /* BREAKPOINT */ */ +/* OBSOLETE */ +/* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */ +/* OBSOLETE This is often the number of bytes in BREAKPOINT */ +/* OBSOLETE but not always. */ */ +/* OBSOLETE */ +/* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Say how long (ordinary) registers are. This is a piece of bogosity */ +/* OBSOLETE used in push_word and a few other places; REGISTER_RAW_SIZE is the */ +/* OBSOLETE real way to know how big a register is. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_SIZE 4 */ +/* OBSOLETE */ +/* OBSOLETE /* Allow the register declarations here to be overridden for remote */ +/* OBSOLETE kernel debugging. */ */ +/* OBSOLETE #if !defined (REGISTER_NAMES) */ +/* OBSOLETE */ +/* OBSOLETE /* Number of machine registers */ */ +/* OBSOLETE */ +/* OBSOLETE #define NUM_REGS 205 */ +/* OBSOLETE */ +/* OBSOLETE /* Initializer for an array of names of registers. */ +/* OBSOLETE There should be NUM_REGS strings in this initializer. */ +/* OBSOLETE */ +/* OBSOLETE FIXME, add floating point registers and support here. */ +/* OBSOLETE */ +/* OBSOLETE Also note that this list does not attempt to deal with kernel */ +/* OBSOLETE debugging (in which the first 32 registers are gr64-gr95). */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_NAMES \ */ +/* OBSOLETE {"gr96", "gr97", "gr98", "gr99", "gr100", "gr101", "gr102", "gr103", "gr104", \ */ +/* OBSOLETE "gr105", "gr106", "gr107", "gr108", "gr109", "gr110", "gr111", "gr112", \ */ +/* OBSOLETE "gr113", "gr114", "gr115", "gr116", "gr117", "gr118", "gr119", "gr120", \ */ +/* OBSOLETE "gr121", "gr122", "gr123", "gr124", "gr125", "gr126", "gr127", \ */ +/* OBSOLETE "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", "lr8", "lr9", \ */ +/* OBSOLETE "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", "lr16", "lr17", "lr18", \ */ +/* OBSOLETE "lr19", "lr20", "lr21", "lr22", "lr23", "lr24", "lr25", "lr26", "lr27", \ */ +/* OBSOLETE "lr28", "lr29", "lr30", "lr31", "lr32", "lr33", "lr34", "lr35", "lr36", \ */ +/* OBSOLETE "lr37", "lr38", "lr39", "lr40", "lr41", "lr42", "lr43", "lr44", "lr45", \ */ +/* OBSOLETE "lr46", "lr47", "lr48", "lr49", "lr50", "lr51", "lr52", "lr53", "lr54", \ */ +/* OBSOLETE "lr55", "lr56", "lr57", "lr58", "lr59", "lr60", "lr61", "lr62", "lr63", \ */ +/* OBSOLETE "lr64", "lr65", "lr66", "lr67", "lr68", "lr69", "lr70", "lr71", "lr72", \ */ +/* OBSOLETE "lr73", "lr74", "lr75", "lr76", "lr77", "lr78", "lr79", "lr80", "lr81", \ */ +/* OBSOLETE "lr82", "lr83", "lr84", "lr85", "lr86", "lr87", "lr88", "lr89", "lr90", \ */ +/* OBSOLETE "lr91", "lr92", "lr93", "lr94", "lr95", "lr96", "lr97", "lr98", "lr99", \ */ +/* OBSOLETE "lr100", "lr101", "lr102", "lr103", "lr104", "lr105", "lr106", "lr107", \ */ +/* OBSOLETE "lr108", "lr109", "lr110", "lr111", "lr112", "lr113", "lr114", "lr115", \ */ +/* OBSOLETE "lr116", "lr117", "lr118", "lr119", "lr120", "lr121", "lr122", "lr123", \ */ +/* OBSOLETE "lr124", "lr125", "lr126", "lr127", \ */ +/* OBSOLETE "AI0", "AI1", "AI2", "AI3", "AI4", "AI5", "AI6", "AI7", "AI8", "AI9", \ */ +/* OBSOLETE "AI10", "AI11", "AI12", "AI13", "AI14", "AI15", "FP", \ */ +/* OBSOLETE "bp", "fc", "cr", "q", \ */ +/* OBSOLETE "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr", \ */ +/* OBSOLETE "pc0", "pc1", "pc2", "mmu", "lru", "fpe", "inte", "fps", "exo", "gr1", \ */ +/* OBSOLETE "alu", "ipc", "ipa", "ipb" } */ +/* OBSOLETE */ +/* OBSOLETE /* */ +/* OBSOLETE * Converts an sdb register number to an internal gdb register number. */ +/* OBSOLETE * Currently under epi, gr96->0...gr127->31...lr0->32...lr127->159, or... */ +/* OBSOLETE * gr64->0...gr95->31, lr0->32...lr127->159. */ +/* OBSOLETE */ */ +/* OBSOLETE #define SDB_REG_TO_REGNUM(value) \ */ +/* OBSOLETE (((value) >= 96 && (value) <= 127) ? ((value) - 96) : \ */ +/* OBSOLETE ((value) >= 128 && (value) <= 255) ? ((value) - 128 + LR0_REGNUM) : \ */ +/* OBSOLETE (value)) */ +/* OBSOLETE */ +/* OBSOLETE /* */ +/* OBSOLETE * Provide the processor register numbers of some registers that are */ +/* OBSOLETE * expected/written in instructions that might change under different */ +/* OBSOLETE * register sets. Namely, gcc can compile (-mkernel-registers) so that */ +/* OBSOLETE * it uses gr64-gr95 in stead of gr96-gr127. */ +/* OBSOLETE */ */ +/* OBSOLETE #define MSP_HW_REGNUM 125 /* gr125 */ */ +/* OBSOLETE #define RAB_HW_REGNUM 126 /* gr126 */ */ +/* OBSOLETE */ +/* OBSOLETE /* Convert Processor Special register #x to REGISTER_NAMES register # */ */ +/* OBSOLETE #define SR_REGNUM(x) \ */ +/* OBSOLETE ((x) < 15 ? VAB_REGNUM + (x) \ */ +/* OBSOLETE : (x) >= 128 && (x) < 131 ? IPC_REGNUM + (x) - 128 \ */ +/* OBSOLETE : (x) == 131 ? Q_REGNUM \ */ +/* OBSOLETE : (x) == 132 ? ALU_REGNUM \ */ +/* OBSOLETE : (x) >= 133 && (x) < 136 ? BP_REGNUM + (x) - 133 \ */ +/* OBSOLETE : (x) >= 160 && (x) < 163 ? FPE_REGNUM + (x) - 160 \ */ +/* OBSOLETE : (x) == 164 ? EXO_REGNUM \ */ +/* OBSOLETE : (error ("Internal error in SR_REGNUM"), 0)) */ +/* OBSOLETE #define GR96_REGNUM 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Define the return register separately, so it can be overridden for */ +/* OBSOLETE kernel procedure calling conventions. */ */ +/* OBSOLETE #define RETURN_REGNUM GR96_REGNUM */ +/* OBSOLETE #define GR1_REGNUM 200 */ +/* OBSOLETE /* This needs to be the memory stack pointer, not the register stack pointer, */ +/* OBSOLETE to make call_function work right. */ */ +/* OBSOLETE #define SP_REGNUM MSP_REGNUM */ +/* OBSOLETE #define FP_REGNUM 33 /* lr1 */ */ +/* OBSOLETE */ +/* OBSOLETE /* Return register for transparent calling convention (gr122). */ */ +/* OBSOLETE #define TPC_REGNUM (122 - 96 + GR96_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Large Return Pointer (gr123). */ */ +/* OBSOLETE #define LRP_REGNUM (123 - 96 + GR96_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Static link pointer (gr124). */ */ +/* OBSOLETE #define SLP_REGNUM (124 - 96 + GR96_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Memory Stack Pointer (gr125). */ */ +/* OBSOLETE #define MSP_REGNUM (125 - 96 + GR96_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Register allocate bound (gr126). */ */ +/* OBSOLETE #define RAB_REGNUM (126 - 96 + GR96_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Register Free Bound (gr127). */ */ +/* OBSOLETE #define RFB_REGNUM (127 - 96 + GR96_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Register Stack Pointer. */ */ +/* OBSOLETE #define RSP_REGNUM GR1_REGNUM */ +/* OBSOLETE #define LR0_REGNUM 32 */ +/* OBSOLETE #define BP_REGNUM 177 */ +/* OBSOLETE #define FC_REGNUM 178 */ +/* OBSOLETE #define CR_REGNUM 179 */ +/* OBSOLETE #define Q_REGNUM 180 */ +/* OBSOLETE #define VAB_REGNUM 181 */ +/* OBSOLETE #define OPS_REGNUM (VAB_REGNUM + 1) */ +/* OBSOLETE #define CPS_REGNUM (VAB_REGNUM + 2) */ +/* OBSOLETE #define CFG_REGNUM (VAB_REGNUM + 3) */ +/* OBSOLETE #define CHA_REGNUM (VAB_REGNUM + 4) */ +/* OBSOLETE #define CHD_REGNUM (VAB_REGNUM + 5) */ +/* OBSOLETE #define CHC_REGNUM (VAB_REGNUM + 6) */ +/* OBSOLETE #define RBP_REGNUM (VAB_REGNUM + 7) */ +/* OBSOLETE #define TMC_REGNUM (VAB_REGNUM + 8) */ +/* OBSOLETE #define TMR_REGNUM (VAB_REGNUM + 9) */ +/* OBSOLETE #define NPC_REGNUM (VAB_REGNUM + 10) /* pc0 */ */ +/* OBSOLETE #define PC_REGNUM (VAB_REGNUM + 11) /* pc1 */ */ +/* OBSOLETE #define PC2_REGNUM (VAB_REGNUM + 12) */ +/* OBSOLETE #define MMU_REGNUM (VAB_REGNUM + 13) */ +/* OBSOLETE #define LRU_REGNUM (VAB_REGNUM + 14) */ +/* OBSOLETE #define FPE_REGNUM (VAB_REGNUM + 15) */ +/* OBSOLETE #define INTE_REGNUM (VAB_REGNUM + 16) */ +/* OBSOLETE #define FPS_REGNUM (VAB_REGNUM + 17) */ +/* OBSOLETE #define EXO_REGNUM (VAB_REGNUM + 18) */ +/* OBSOLETE /* gr1 is defined above as 200 = VAB_REGNUM + 19 */ */ +/* OBSOLETE #define ALU_REGNUM (VAB_REGNUM + 20) */ +/* OBSOLETE #define PS_REGNUM ALU_REGNUM */ +/* OBSOLETE #define IPC_REGNUM (VAB_REGNUM + 21) */ +/* OBSOLETE #define IPA_REGNUM (VAB_REGNUM + 22) */ +/* OBSOLETE #define IPB_REGNUM (VAB_REGNUM + 23) */ +/* OBSOLETE */ +/* OBSOLETE #endif /* !defined(REGISTER_NAMES) */ */ +/* OBSOLETE */ +/* OBSOLETE /* Total amount of space needed to store our copies of the machine's */ +/* OBSOLETE register state, the array `registers'. */ */ +/* OBSOLETE #define REGISTER_BYTES (NUM_REGS * 4) */ +/* OBSOLETE */ +/* OBSOLETE /* Index within `registers' of the first byte of the space for */ +/* OBSOLETE register N. */ */ +/* OBSOLETE #define REGISTER_BYTE(N) ((N)*4) */ +/* OBSOLETE */ +/* OBSOLETE /* Number of bytes of storage in the actual machine representation */ +/* OBSOLETE for register N. */ */ +/* OBSOLETE */ +/* OBSOLETE /* All regs are 4 bytes. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_RAW_SIZE(N) (4) */ +/* OBSOLETE */ +/* OBSOLETE /* Number of bytes of storage in the program's representation */ +/* OBSOLETE for register N. */ */ +/* OBSOLETE */ +/* OBSOLETE /* All regs are 4 bytes. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) (4) */ +/* OBSOLETE */ +/* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. */ */ +/* OBSOLETE */ +/* OBSOLETE #define MAX_REGISTER_RAW_SIZE (4) */ +/* OBSOLETE */ +/* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. */ */ +/* OBSOLETE */ +/* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE (4) */ +/* OBSOLETE */ +/* OBSOLETE /* Return the GDB type object for the "standard" data type */ +/* OBSOLETE of data in register N. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) \ */ +/* OBSOLETE (((N) == PC_REGNUM || (N) == LRP_REGNUM || (N) == SLP_REGNUM \ */ +/* OBSOLETE || (N) == MSP_REGNUM || (N) == RAB_REGNUM || (N) == RFB_REGNUM \ */ +/* OBSOLETE || (N) == GR1_REGNUM || (N) == FP_REGNUM || (N) == LR0_REGNUM \ */ +/* OBSOLETE || (N) == NPC_REGNUM || (N) == PC2_REGNUM) \ */ +/* OBSOLETE ? lookup_pointer_type (builtin_type_void) : builtin_type_int) */ +/* OBSOLETE */ +/* OBSOLETE /* Store the address of the place in which to copy the structure the */ +/* OBSOLETE subroutine will return. This is called from call_function. */ */ +/* OBSOLETE /* On the a29k the LRP points to the part of the structure beyond the first */ +/* OBSOLETE 16 words. */ */ +/* OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) \ */ +/* OBSOLETE write_register (LRP_REGNUM, (ADDR) + 16 * 4); */ +/* 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 extern use_struct_convention_fn a29k_use_struct_convention; */ +/* OBSOLETE #define USE_STRUCT_CONVENTION(gcc_p, type) a29k_use_struct_convention (gcc_p, type) */ +/* OBSOLETE */ +/* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ +/* OBSOLETE a function return value of type TYPE, and copy that, in virtual format, */ +/* OBSOLETE into VALBUF. */ */ +/* OBSOLETE */ +/* OBSOLETE #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE int reg_length = TYPE_LENGTH (TYPE); \ */ +/* OBSOLETE if (reg_length > 16 * 4) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE reg_length = 16 * 4; \ */ +/* OBSOLETE read_memory (*((int *)(REGBUF) + LRP_REGNUM), (VALBUF) + 16 * 4, \ */ +/* OBSOLETE TYPE_LENGTH (TYPE) - 16 * 4); \ */ +/* OBSOLETE } \ */ +/* OBSOLETE memcpy ((VALBUF), ((int *)(REGBUF))+RETURN_REGNUM, reg_length); \ */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Write into appropriate registers a function return value */ +/* OBSOLETE of type TYPE, given in virtual format. */ */ +/* OBSOLETE */ +/* OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE int reg_length = TYPE_LENGTH (TYPE); \ */ +/* OBSOLETE if (reg_length > 16 * 4) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE reg_length = 16 * 4; \ */ +/* OBSOLETE write_memory (read_register (LRP_REGNUM), \ */ +/* OBSOLETE (char *)(VALBUF) + 16 * 4, \ */ +/* OBSOLETE TYPE_LENGTH (TYPE) - 16 * 4); \ */ +/* OBSOLETE } \ */ +/* OBSOLETE write_register_bytes (REGISTER_BYTE (RETURN_REGNUM), (char *)(VALBUF), \ */ +/* OBSOLETE TYPE_LENGTH (TYPE)); \ */ +/* OBSOLETE } */ +/* OBSOLETE /* *INDENT-OFF* */ */ +/* OBSOLETE /* The a29k user's guide documents well what the stacks look like. */ +/* OBSOLETE But what isn't so clear there is how this interracts with the */ +/* OBSOLETE symbols, or with GDB. */ +/* OBSOLETE In the following saved_msp, saved memory stack pointer (which functions */ +/* OBSOLETE as a memory frame pointer), means either */ +/* OBSOLETE a register containing the memory frame pointer or, in the case of */ +/* OBSOLETE functions with fixed size memory frames (i.e. those who don't use */ +/* OBSOLETE alloca()), the result of the calculation msp + msize. */ +/* OBSOLETE */ +/* OBSOLETE LOC_ARG, LOC_LOCAL - For GCC, these are relative to saved_msp. */ +/* OBSOLETE For high C, these are relative to msp (making alloca impossible). */ +/* OBSOLETE LOC_REGISTER, LOC_REGPARM - The register number is the number at the */ +/* OBSOLETE time the function is running (after the prologue), or in the case */ +/* OBSOLETE of LOC_REGPARM, may be a register number in the range 160-175. */ +/* OBSOLETE */ +/* OBSOLETE The compilers do things like store an argument into memory, and then put out */ +/* OBSOLETE a LOC_ARG for it, or put it into global registers and put out a */ +/* OBSOLETE LOC_REGPARM. Thus is it important to execute the first line of */ +/* OBSOLETE code (i.e. the line of the open brace, i.e. the prologue) of a function */ +/* OBSOLETE before trying to print arguments or anything. */ +/* OBSOLETE */ +/* OBSOLETE The following diagram attempts to depict what is going on in memory */ +/* OBSOLETE (see also the _a29k user's guide_) and also how that interacts with */ +/* OBSOLETE GDB frames. We arbitrarily pick fci->frame to point the same place */ +/* OBSOLETE as the register stack pointer; since we set it ourself in */ +/* OBSOLETE INIT_EXTRA_FRAME_INFO, and access it only through the FRAME_* */ +/* OBSOLETE macros, it doesn't really matter exactly how we */ +/* OBSOLETE do it. However, note that FRAME_FP is used in two ways in GDB: */ +/* OBSOLETE (1) as a "magic cookie" which uniquely identifies frames (even over */ +/* OBSOLETE calls to the inferior), (2) (in PC_IN_CALL_DUMMY [ON_STACK]) */ +/* OBSOLETE as the value of SP_REGNUM before the dummy frame was pushed. These */ +/* OBSOLETE two meanings would be incompatible for the a29k if we defined */ +/* OBSOLETE CALL_DUMMY_LOCATION == ON_STACK (but we don't, so don't worry about it). */ +/* OBSOLETE Also note that "lr1" below, while called a frame pointer */ +/* OBSOLETE in the user's guide, has only one function: To determine whether */ +/* OBSOLETE registers need to be filled in the function epilogue. */ +/* OBSOLETE */ +/* OBSOLETE Consider the code: */ +/* OBSOLETE < call bar> */ +/* OBSOLETE loc1: . . . */ +/* OBSOLETE bar: sub gr1,gr1,rsize_b */ +/* OBSOLETE . . . */ +/* OBSOLETE add mfp,msp,0 */ +/* OBSOLETE sub msp,msp,msize_b */ +/* OBSOLETE . . . */ +/* OBSOLETE < call foo > */ +/* OBSOLETE loc2: . . . */ +/* OBSOLETE foo: sub gr1,gr1,rsize_f */ +/* OBSOLETE . . . */ +/* OBSOLETE add mfp,msp,0 */ +/* OBSOLETE sub msp,msp,msize_f */ +/* OBSOLETE . . . */ +/* OBSOLETE loc3: < suppose the inferior stops here > */ +/* OBSOLETE */ +/* OBSOLETE memory stack register stack */ +/* OBSOLETE | | |____________| */ +/* OBSOLETE | | |____loc1____| */ +/* OBSOLETE +------->|___________| | | ^ */ +/* OBSOLETE | | ^ | | locals_b | | */ +/* OBSOLETE | | | | |____________| | */ +/* OBSOLETE | | | | | | | rsize_b */ +/* OBSOLETE | | | msize_b | | args_to_f | | */ +/* OBSOLETE | | | | |____________| | */ +/* OBSOLETE | | | | |____lr1_____| V */ +/* OBSOLETE | | V | |____loc2____|<----------------+ */ +/* OBSOLETE | +--->|___________|<---------mfp | ^ | */ +/* OBSOLETE | | | ^ | | locals_f | | | */ +/* OBSOLETE | | | | msize_f | |____________| | | */ +/* OBSOLETE | | | | | | | | rsize_f | */ +/* OBSOLETE | | | V | | args | | | */ +/* OBSOLETE | | |___________|<msp |____________| | | */ +/* OBSOLETE | | |_____lr1____| V | */ +/* OBSOLETE | | |___garbage__| <- gr1 <----+ | */ +/* OBSOLETE | | | | */ +/* OBSOLETE | | | | */ +/* OBSOLETE | | pc=loc3 | | */ +/* OBSOLETE | | | | */ +/* OBSOLETE | | | | */ +/* OBSOLETE | | frame cache | | */ +/* OBSOLETE | | |_________________| | | */ +/* OBSOLETE | | |rsize=rsize_b | | | */ +/* OBSOLETE | | |msize=msize_b | | | */ +/* OBSOLETE +---|--------saved_msp | | | */ +/* OBSOLETE | |frame------------------------------------|---+ */ +/* OBSOLETE | |pc=loc2 | | */ +/* OBSOLETE | |_________________| | */ +/* OBSOLETE | |rsize=rsize_f | | */ +/* OBSOLETE | |msize=msize_f | | */ +/* OBSOLETE +--------saved_msp | | */ +/* OBSOLETE |frame------------------------------------+ */ +/* OBSOLETE |pc=loc3 | */ +/* OBSOLETE |_________________| */ +/* OBSOLETE */ +/* OBSOLETE So, is that sufficiently confusing? Welcome to the 29000. */ +/* OBSOLETE Notes: */ +/* OBSOLETE * The frame for foo uses a memory frame pointer but the frame for */ +/* OBSOLETE bar does not. In the latter case the saved_msp is */ +/* OBSOLETE computed by adding msize to the saved_msp of the */ +/* OBSOLETE next frame. */ +/* OBSOLETE * msize is in the frame cache only for high C's sake. */ */ +/* OBSOLETE /* *INDENT-ON* */ */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE void read_register_stack (); */ +/* OBSOLETE long read_register_stack_integer (); */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_INIT_SAVED_REGS(fi) /*no-op */ */ +/* OBSOLETE */ +/* OBSOLETE #define EXTRA_FRAME_INFO \ */ +/* OBSOLETE CORE_ADDR saved_msp; \ */ +/* OBSOLETE unsigned int rsize; \ */ +/* OBSOLETE unsigned int msize; \ */ +/* OBSOLETE unsigned char flags; */ +/* OBSOLETE */ +/* OBSOLETE /* Bits for flags in EXTRA_FRAME_INFO */ */ +/* OBSOLETE #define TRANSPARENT_FRAME 0x1 /* This is a transparent frame */ */ +/* OBSOLETE #define MFP_USED 0x2 /* A memory frame pointer is used */ */ +/* OBSOLETE */ +/* OBSOLETE /* Because INIT_FRAME_PC gets passed fromleaf, that's where we init */ +/* OBSOLETE not only ->pc and ->frame, but all the extra stuff, when called from */ +/* OBSOLETE get_prev_frame, that is. */ */ +/* OBSOLETE #define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci) */ +/* OBSOLETE void init_extra_frame_info (); */ +/* OBSOLETE */ +/* OBSOLETE #define INIT_FRAME_PC(fromleaf, fci) init_frame_pc(fromleaf, fci) */ +/* OBSOLETE void init_frame_pc (); */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* FRAME_CHAIN takes a FRAME */ +/* OBSOLETE and produces the frame's chain-pointer. */ +/* OBSOLETE */ +/* OBSOLETE However, if FRAME_CHAIN_VALID returns zero, */ +/* OBSOLETE it means the given frame is the outermost one and has no caller. */ */ +/* OBSOLETE */ +/* OBSOLETE /* On the a29k, the nominal address of a frame is the address on the */ +/* OBSOLETE register stack of the return address (the one next to the incoming */ +/* OBSOLETE arguments, not down at the bottom so nominal address == stack pointer). */ +/* OBSOLETE */ +/* OBSOLETE GDB expects "nominal address" to equal contents of FP_REGNUM, */ +/* OBSOLETE at least when it comes time to create the innermost frame. */ +/* OBSOLETE However, that doesn't work for us, so when creating the innermost */ +/* OBSOLETE frame we set ->frame ourselves in INIT_EXTRA_FRAME_INFO. */ */ +/* OBSOLETE */ +/* OBSOLETE /* These are mostly dummies for the a29k because INIT_FRAME_PC */ +/* OBSOLETE sets prev->frame instead. */ */ +/* OBSOLETE /* If rsize is zero, we must be at end of stack (or otherwise hosed). */ +/* OBSOLETE If we don't check rsize, we loop forever if we see rsize == 0. */ */ +/* OBSOLETE #define FRAME_CHAIN(thisframe) \ */ +/* OBSOLETE ((thisframe)->rsize == 0 \ */ +/* OBSOLETE ? 0 \ */ +/* OBSOLETE : (thisframe)->frame + (thisframe)->rsize) */ +/* OBSOLETE */ +/* OBSOLETE /* Determine if the frame has a 'previous' and back-traceable frame. */ */ +/* OBSOLETE #define FRAME_IS_UNCHAINED(frame) ((frame)->flags & TRANSPARENT_FRAME) */ +/* OBSOLETE */ +/* OBSOLETE /* Find the previous frame of a transparent routine. */ +/* OBSOLETE * For now lets not try and trace through a transparent routine (we might */ +/* OBSOLETE * have to assume that all transparent routines are traps). */ +/* OBSOLETE */ */ +/* OBSOLETE #define FIND_PREV_UNCHAINED_FRAME(frame) 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Define other aspects of the stack frame. */ */ +/* OBSOLETE */ +/* OBSOLETE /* An expression that tells us whether the function invocation represented */ +/* OBSOLETE by FI does not have a frame on the stack associated with it. */ */ +/* OBSOLETE #define FRAMELESS_FUNCTION_INVOCATION(FI) \ */ +/* OBSOLETE (frameless_look_for_prologue (FI)) */ +/* OBSOLETE */ +/* OBSOLETE /* Saved pc (i.e. return address). */ */ +/* OBSOLETE #define FRAME_SAVED_PC(fraim) \ */ +/* OBSOLETE (read_register_stack_integer ((fraim)->frame + (fraim)->rsize, 4)) */ +/* 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 #define FRAME_LOCALS_ADDRESS(fi) frame_locals_address (fi) */ +/* OBSOLETE extern CORE_ADDR frame_locals_address (); */ +/* OBSOLETE */ +/* OBSOLETE /* Return number of args passed to a frame. */ +/* OBSOLETE Can return -1, meaning no way to tell. */ */ +/* OBSOLETE /* We tried going to the effort of finding the tags word and getting */ +/* OBSOLETE the argcount field from it, to support debugging assembler code. */ +/* OBSOLETE Problem was, the "argcount" field never did hold the argument */ +/* OBSOLETE count. */ */ +/* OBSOLETE #define FRAME_NUM_ARGS(fi) (-1) */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) FRAME_LOCALS_ADDRESS (fi) */ +/* OBSOLETE */ +/* OBSOLETE /* Return number of bytes at start of arglist that are not really args. */ */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_ARGS_SKIP 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Provide our own get_saved_register. HAVE_REGISTER_WINDOWS is insufficient */ +/* OBSOLETE because registers get renumbered on the a29k without getting saved. */ */ +/* OBSOLETE */ +/* OBSOLETE struct frame_info; */ +/* OBSOLETE void a29k_get_saved_register (char *raw_buffer, int *optimized, */ +/* OBSOLETE CORE_ADDR * addrp, struct frame_info *frame, */ +/* OBSOLETE int regnum, enum lval_type *lvalp); */ +/* OBSOLETE #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ */ +/* OBSOLETE a29k_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) */ +/* OBSOLETE */ +/* OBSOLETE /* Call function stuff. */ */ +/* OBSOLETE /* *INDENT-OFF* */ */ +/* OBSOLETE /* The dummy frame looks like this (see also the general frame picture */ +/* OBSOLETE above): */ +/* OBSOLETE */ +/* OBSOLETE register stack */ +/* OBSOLETE */ +/* OBSOLETE | | frame for function */ +/* OBSOLETE | locals_sproc | executing at time */ +/* OBSOLETE |________________| of call_function. */ +/* OBSOLETE | | We must not disturb */ +/* OBSOLETE | args_out_sproc | it. */ +/* OBSOLETE memory stack |________________| */ +/* OBSOLETE |____lr1_sproc___|<-+ */ +/* OBSOLETE | | |__retaddr_sproc_| | <-- gr1 (at start) */ +/* OBSOLETE |____________|<-msp 0 <-----------mfp_dummy_____| | */ +/* OBSOLETE | | (at start) | save regs | | */ +/* OBSOLETE | arg_slop | | pc0,pc1 | | */ +/* OBSOLETE | | | pc2,lr0 sproc | | */ +/* OBSOLETE | (16 words) | | gr96-gr124 | | */ +/* OBSOLETE |____________|<-msp 1--after | sr160-sr162 | | */ +/* OBSOLETE | | PUSH_DUMMY_FRAME| sr128-sr135 | | */ +/* OBSOLETE | struct ret | |________________| | */ +/* OBSOLETE | 17+ | | | | */ +/* OBSOLETE |____________|<- lrp | args_out_dummy | | */ +/* OBSOLETE | struct ret | | (16 words) | | */ +/* OBSOLETE | 16 | |________________| | */ +/* OBSOLETE | (16 words) | |____lr1_dummy___|--+ */ +/* OBSOLETE |____________|<- msp 2--after |_retaddr_dummy__|<- gr1 after */ +/* OBSOLETE | | struct ret | | PUSH_DUMMY_FRAME */ +/* OBSOLETE | margs17+ | area allocated | locals_inf | */ +/* OBSOLETE | | |________________| called */ +/* OBSOLETE |____________|<- msp 4--when | | function's */ +/* OBSOLETE | | inf called | args_out_inf | frame (set up */ +/* OBSOLETE | margs16 | |________________| by called */ +/* OBSOLETE | (16 words) | |_____lr1_inf____| function). */ +/* OBSOLETE |____________|<- msp 3--after | . | */ +/* OBSOLETE | | args pushed | . | */ +/* OBSOLETE | | | . | */ +/* OBSOLETE | | */ +/* OBSOLETE */ +/* OBSOLETE arg_slop: This area is so that when the call dummy adds 16 words to */ +/* OBSOLETE the msp, it won't end up larger than mfp_dummy (it is needed in the */ +/* OBSOLETE case where margs and struct_ret do not add up to at least 16 words). */ +/* OBSOLETE struct ret: This area is allocated by GDB if the return value is more */ +/* OBSOLETE than 16 words. struct ret_16 is not used on the a29k. */ +/* OBSOLETE margs: Pushed by GDB. The call dummy copies the first 16 words to */ +/* OBSOLETE args_out_dummy. */ +/* OBSOLETE retaddr_sproc: Contains the PC at the time we call the function. */ +/* OBSOLETE set by PUSH_DUMMY_FRAME and read by POP_FRAME. */ +/* OBSOLETE retaddr_dummy: This points to a breakpoint instruction in the dummy. */ */ +/* OBSOLETE /* *INDENT-ON* */ */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* Rsize for dummy frame, in bytes. */ */ +/* OBSOLETE */ +/* OBSOLETE /* Bytes for outgoing args, lr1, and retaddr. */ */ +/* OBSOLETE #define DUMMY_ARG (2 * 4 + 16 * 4) */ +/* OBSOLETE */ +/* OBSOLETE /* Number of special registers (sr128-) to save. */ */ +/* OBSOLETE #define DUMMY_SAVE_SR128 8 */ +/* OBSOLETE /* Number of special registers (sr160-) to save. */ */ +/* OBSOLETE #define DUMMY_SAVE_SR160 3 */ +/* OBSOLETE /* Number of general (gr96- or gr64-) registers to save. */ */ +/* OBSOLETE #define DUMMY_SAVE_GREGS 29 */ +/* OBSOLETE */ +/* OBSOLETE #define DUMMY_FRAME_RSIZE \ */ +/* OBSOLETE (4 /* mfp_dummy */ \ */ +/* OBSOLETE + 4 * 4 /* pc0, pc1, pc2, lr0 */ \ */ +/* OBSOLETE + DUMMY_SAVE_GREGS * 4 \ */ +/* OBSOLETE + DUMMY_SAVE_SR160 * 4 \ */ +/* OBSOLETE + DUMMY_SAVE_SR128 * 4 \ */ +/* OBSOLETE + DUMMY_ARG \ */ +/* OBSOLETE + 4 /* pad to doubleword */ ) */ +/* OBSOLETE */ +/* OBSOLETE /* Push an empty stack frame, to record the current PC, etc. */ */ +/* OBSOLETE */ +/* OBSOLETE #define PUSH_DUMMY_FRAME push_dummy_frame() */ +/* OBSOLETE extern void push_dummy_frame (); */ +/* OBSOLETE */ +/* OBSOLETE /* Discard from the stack the innermost frame, */ +/* OBSOLETE restoring all saved registers. */ */ +/* OBSOLETE */ +/* OBSOLETE #define POP_FRAME pop_frame() */ +/* OBSOLETE extern void pop_frame (); */ +/* OBSOLETE */ +/* OBSOLETE /* This sequence of words is the instructions */ +/* OBSOLETE mtsrim cr, 15 */ +/* OBSOLETE loadm 0, 0, lr2, msp ; load first 16 words of arguments into registers */ +/* OBSOLETE add msp, msp, 16 * 4 ; point to the remaining arguments */ +/* OBSOLETE CONST_INSN: */ +/* OBSOLETE const lr0,inf ; (replaced by half of target addr) */ +/* OBSOLETE consth lr0,inf ; (replaced by other half of target addr) */ +/* OBSOLETE calli lr0, lr0 */ +/* OBSOLETE aseq 0x40,gr1,gr1 ; nop */ +/* OBSOLETE BREAKPT_INSN: */ +/* OBSOLETE asneq 0x50,gr1,gr1 ; breakpoint (replaced by local breakpoint insn) */ +/* OBSOLETE */ */ +/* OBSOLETE */ +/* OBSOLETE #error "This file is broken. GDB does not define HOST_BYTE_ORDER." */ +/* OBSOLETE #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER */ +/* OBSOLETE #define BS(const) const */ +/* OBSOLETE #else */ +/* OBSOLETE #define BS(const) (((const) & 0xff) << 24) | \ */ +/* OBSOLETE (((const) & 0xff00) << 8) | \ */ +/* OBSOLETE (((const) & 0xff0000) >> 8) | \ */ +/* OBSOLETE (((const) & 0xff000000) >> 24) */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE /* Position of the "const" and blkt instructions within CALL_DUMMY in bytes. */ */ +/* OBSOLETE #define CONST_INSN (3 * 4) */ +/* OBSOLETE #define BREAKPT_INSN (7 * 4) */ +/* OBSOLETE #define CALL_DUMMY { \ */ +/* OBSOLETE BS(0x0400870f),\ */ +/* OBSOLETE BS(0x36008200|(MSP_HW_REGNUM)), \ */ +/* OBSOLETE BS(0x15000040|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16)), \ */ +/* OBSOLETE BS(0x03ff80ff), \ */ +/* OBSOLETE BS(0x02ff80ff), \ */ +/* OBSOLETE BS(0xc8008080), \ */ +/* OBSOLETE BS(0x70400101), \ */ +/* OBSOLETE BS(0x72500101)} */ +/* OBSOLETE #define CALL_DUMMY_LENGTH (8 * 4) */ +/* OBSOLETE */ +/* OBSOLETE #define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */ */ +/* OBSOLETE */ +/* OBSOLETE /* Helper macro for FIX_CALL_DUMMY. WORDP is a long * which points to a */ +/* OBSOLETE word in target byte order; bits 0-7 and 16-23 of *WORDP are replaced with */ +/* OBSOLETE bits 0-7 and 8-15 of DATA (which is in host byte order). */ */ +/* OBSOLETE */ +/* OBSOLETE #if TARGET_BYTE_ORDER == BFD_ENDIAN_BIG */ +/* OBSOLETE #define STUFF_I16(WORDP, DATA) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE *((char *)(WORDP) + 3) = ((DATA) & 0xff);\ */ +/* OBSOLETE *((char *)(WORDP) + 1) = (((DATA) >> 8) & 0xff);\ */ +/* OBSOLETE } */ +/* OBSOLETE #else /* Target is little endian. */ */ +/* OBSOLETE #define STUFF_I16(WORDP, DATA) \ */ +/* OBSOLETE { */ +/* OBSOLETE *(char *) (WORDP) = ((DATA) & 0xff); */ +/* OBSOLETE *((char *) (WORDP) + 2) = (((DATA) >> 8) & 0xff); */ +/* OBSOLETE } */ +/* OBSOLETE #endif /* Target is little endian. */ */ +/* OBSOLETE */ +/* OBSOLETE /* Insert the specified number of args and function address */ +/* OBSOLETE into a call sequence of the above form stored at DUMMYNAME. */ */ +/* OBSOLETE */ +/* OBSOLETE /* Currently this stuffs in the address of the function that we are calling. */ +/* OBSOLETE Since different a29k systems use different breakpoint instructions, it */ +/* OBSOLETE also stuffs BREAKPOINT in the right place (to avoid having to */ +/* OBSOLETE duplicate CALL_DUMMY in each tm-*.h file). */ */ +/* OBSOLETE */ +/* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ */ +/* OBSOLETE {\ */ +/* OBSOLETE STUFF_I16((char *)dummyname + CONST_INSN, fun); \ */ +/* OBSOLETE STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16); \ */ +/* OBSOLETE /* FIXME memcpy ((char *)(dummyname) + BREAKPT_INSN, break_insn, 4); */ \ */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* a29k architecture has separate data & instruction memories -- wired to */ +/* OBSOLETE different pins on the chip -- and can't execute the data memory. */ +/* OBSOLETE Also, there should be space after text_end; */ +/* OBSOLETE we won't get a SIGSEGV or scribble on data space. */ */ +/* OBSOLETE */ +/* OBSOLETE #define CALL_DUMMY_LOCATION AFTER_TEXT_END */ +/* OBSOLETE */ +/* OBSOLETE /* Because of this, we need (as a kludge) to know the addresses of the */ +/* OBSOLETE text section. */ */ +/* OBSOLETE */ +/* OBSOLETE #define NEED_TEXT_START_END 1 */ +/* OBSOLETE */ +/* OBSOLETE /* How to translate register numbers in the .stab's into gdb's internal register */ +/* OBSOLETE numbers. We don't translate them, but we warn if an invalid register */ +/* OBSOLETE number is seen. Note that FIXME, we use the value "sym" as an implicit */ +/* OBSOLETE argument in printing the error message. It happens to be available where */ +/* OBSOLETE this macro is used. (This macro definition appeared in a late revision */ +/* OBSOLETE of gdb-3.91.6 and is not well tested. Also, it should be a "complaint".) */ */ +/* OBSOLETE */ +/* OBSOLETE #define STAB_REG_TO_REGNUM(num) \ */ +/* OBSOLETE (((num) > LR0_REGNUM + 127) \ */ +/* OBSOLETE ? fprintf(stderr, \ */ +/* OBSOLETE "Invalid register number %d in symbol table entry for %s\n", \ */ +/* OBSOLETE (num), SYMBOL_SOURCE_NAME (sym)), (num) \ */ +/* OBSOLETE : (num)) */ +/* OBSOLETE */ +/* OBSOLETE extern enum a29k_processor_types */ +/* OBSOLETE { */ +/* OBSOLETE a29k_unknown, */ +/* OBSOLETE */ +/* OBSOLETE /* Bit 0x400 of the CPS does *not* identify freeze mode, i.e. 29000, */ +/* OBSOLETE 29030, etc. */ */ +/* OBSOLETE a29k_no_freeze_mode, */ +/* OBSOLETE */ +/* OBSOLETE /* Bit 0x400 of the CPS does identify freeze mode, i.e. 29050. */ */ +/* OBSOLETE a29k_freeze_mode */ +/* OBSOLETE } */ +/* OBSOLETE processor_type; */ +/* OBSOLETE */ +/* OBSOLETE /* We need three arguments for a general frame specification for the */ +/* OBSOLETE "frame" or "info frame" command. */ */ +/* OBSOLETE */ +/* OBSOLETE #define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv) */ +/* OBSOLETE extern struct frame_info *setup_arbitrary_frame (int, CORE_ADDR *); */ diff --git a/gdb/config/a29k/tm-vx29k.h b/gdb/config/a29k/tm-vx29k.h index 8aee1dd..40c6689 100644 --- a/gdb/config/a29k/tm-vx29k.h +++ b/gdb/config/a29k/tm-vx29k.h @@ -1,230 +1,230 @@ -/* Target machine description for VxWorks on the 29k, for GDB, the GNU debugger. - Copyright 1994, 1995, 1998, 1999, 2000 Free Software Foundation, Inc. - Contributed by Cygnus Support. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "regcache.h" -#include "value.h" -#include "a29k/tm-a29k.h" -#include "tm-vxworks.h" - -/* Number of registers in a ptrace_getregs call. */ - -#define VX_NUM_REGS (NUM_REGS) - -/* Number of registers in a ptrace_getfpregs call. */ - -/* #define VX_SIZE_FPREGS */ - -/* This is almost certainly the wrong place for this: */ -#define LR2_REGNUM 34 - - -/* Vxworks has its own CALL_DUMMY since it manages breakpoints in the kernel */ - -#undef CALL_DUMMY - -/* Replace the breakpoint instruction in the CALL_DUMMY with a nop. - For Vxworks, the breakpoint is set and deleted by calls to - CALL_DUMMY_BREAK_SET and CALL_DUMMY_BREAK_DELETE. */ - -#error "This file is broken. GDB does not define HOST_BYTE_ORDER." -#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER -#define CALL_DUMMY {0x0400870f,\ - 0x36008200|(MSP_HW_REGNUM), \ - 0x15000040|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16), \ - 0x03ff80ff, 0x02ff80ff, 0xc8008080, 0x70400101, 0x70400101} -#else /* Byte order differs. */ -#define CALL_DUMMY {0x0f870004,\ - 0x00820036|(MSP_HW_REGNUM << 24), \ - 0x40000015|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16), \ - 0xff80ff03, 0xff80ff02, 0x808000c8, 0x01014070, 0x01014070} -#endif /* Byte order differs. */ - - -/* For the basic CALL_DUMMY definitions, see "tm-29k.h." We use the - same CALL_DUMMY code, but define FIX_CALL_DUMMY (and related macros) - locally to handle remote debugging of VxWorks targets. The difference - is in the setting and clearing of the breakpoint at the end of the - CALL_DUMMY code fragment; under VxWorks, we can't simply insert a - breakpoint instruction into the code, since that would interfere with - the breakpoint management mechanism on the target. - Note that CALL_DUMMY is a piece of code that is used to call any C function - thru VxGDB */ - -/* The offset of the instruction within the CALL_DUMMY code where we - want the inferior to stop after the function call has completed. - call_function_by_hand () sets a breakpoint here (via CALL_DUMMY_BREAK_SET), - which POP_FRAME later deletes (via CALL_DUMMY_BREAK_DELETE). */ - -#define CALL_DUMMY_STOP_OFFSET (7 * 4) - -/* The offset of the first instruction of the CALL_DUMMY code fragment - relative to the frame pointer for a dummy frame. This is equal to - the size of the CALL_DUMMY plus the arg_slop area size (see the diagram - in "tm-29k.h"). */ -/* PAD : the arg_slop area size doesn't appear to me to be useful since, the - call dummy code no longer modify the msp. See below. This must be checked. */ - -#define CALL_DUMMY_OFFSET_IN_FRAME (CALL_DUMMY_LENGTH + 16 * 4) - -/* Insert the specified number of args and function address - into a CALL_DUMMY sequence stored at DUMMYNAME, replace the third - instruction (add msp, msp, 16*4) with a nop, and leave the final nop. - We can't keep using a CALL_DUMMY that modify the msp since, for VxWorks, - CALL_DUMMY is stored in the Memory Stack. Adding 16 words to the msp - would then make possible for the inferior to overwrite the CALL_DUMMY code, - thus creating a lot of trouble when exiting the inferior to come back in - a CALL_DUMMY code that no longer exists... Furthermore, ESF are also stored - from the msp in the memory stack. If msp is set higher than the dummy code, - an ESF may clobber this code. */ - -#if TARGET_BYTE_ORDER == BFD_ENDIAN_BIG -#define NOP_INSTR 0x70400101 -#else /* Target is little endian */ -#define NOP_INSTR 0x01014070 -#endif - -#undef FIX_CALL_DUMMY -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ - { \ - *(int *)((char *)dummyname + 8) = NOP_INSTR; \ - STUFF_I16((char *)dummyname + CONST_INSN, fun); \ - STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16); \ - } - -/* For VxWorks, CALL_DUMMY must be stored in the stack of the task that is - being debugged and executed "in the context of" this task */ - -#undef CALL_DUMMY_LOCATION -#define CALL_DUMMY_LOCATION ON_STACK - -/* Set or delete a breakpoint at the location within a CALL_DUMMY code - fragment where we want the target program to stop after the function - call is complete. CALL_DUMMY_ADDR is the address of the first - instruction in the CALL_DUMMY. DUMMY_FRAME_ADDR is the value of the - frame pointer in the dummy frame. - - NOTE: in the both of the following definitions, we take advantage of - knowledge of the implementation of the target breakpoint operation, - in that we pass a null pointer as the second argument. It seems - reasonable to assume that any target requiring the use of - CALL_DUMMY_BREAK_{SET,DELETE} will not store the breakpoint - shadow contents in GDB; in any case, this assumption is vaild - for all VxWorks-related targets. */ - -#define CALL_DUMMY_BREAK_SET(call_dummy_addr) \ - target_insert_breakpoint ((call_dummy_addr) + CALL_DUMMY_STOP_OFFSET, \ - (char *) 0) - -#define CALL_DUMMY_BREAK_DELETE(dummy_frame_addr) \ - target_remove_breakpoint ((dummy_frame_addr) - (CALL_DUMMY_OFFSET_IN_FRAME \ - - CALL_DUMMY_STOP_OFFSET), \ - (char *) 0) - -/* Return nonzero if the pc is executing within a CALL_DUMMY frame. */ - -#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \ - ((pc) >= (sp) \ - && (pc) <= (sp) + CALL_DUMMY_OFFSET_IN_FRAME + CALL_DUMMY_LENGTH) - -/* Defining this prevents us from trying to pass a structure-valued argument - to a function called via the CALL_DUMMY mechanism. This is not handled - properly in call_function_by_hand (), and the fix might require re-writing - the CALL_DUMMY handling for all targets (at least, a clean solution - would probably require this). Arguably, this should go in "tm-29k.h" - rather than here. */ - -#define STRUCT_VAL_ARGS_UNSUPPORTED - -#define BKPT_OFFSET (7 * 4) -#define BKPT_INSTR 0x72500101 - -#undef FIX_CALL_DUMMY -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ - {\ - STUFF_I16((char *)dummyname + CONST_INSN, fun);\ - STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16);\ - *(int *)((char *)dummyname + BKPT_OFFSET) = BKPT_INSTR;\ - } - - -/* Offsets into jmp_buf. They are derived from VxWorks' REG_SET struct - (see VxWorks' setjmp.h). Note that Sun2, Sun3 and SunOS4 and VxWorks have - different REG_SET structs, hence different layouts for the jmp_buf struct. - Only JB_PC is needed for getting the saved PC value. */ - -#define JB_ELEMENT_SIZE 4 /* size of each element in jmp_buf */ -#define JB_PC 3 /* offset of pc (pc1) in jmp_buf */ - -/* Figure out where the longjmp will land. We expect that we have just entered - longjmp and haven't yet setup the stack frame, so the args are still in the - output regs. lr2 (LR2_REGNUM) points at the jmp_buf structure from which we - extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. - This routine returns true on success */ - -#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) -extern int get_longjmp_target (CORE_ADDR *); - -/* VxWorks adjusts the PC after a breakpoint has been hit. */ - -#undef DECR_PC_AFTER_BREAK -#define DECR_PC_AFTER_BREAK 0 - -/* Do whatever promotions are appropriate on a value being returned - from a function. VAL is the user-supplied value, and FUNC_TYPE - is the return type of the function if known, else 0. - - For the Am29k, as far as I understand, if the function return type is known, - cast the value to that type; otherwise, ensure that integer return values - fill all of gr96. - - This definition really belongs in "tm-29k.h", since it applies - to most Am29K-based systems; but once moved into that file, it might - need to be redefined for all Am29K-based targets that also redefine - STORE_RETURN_VALUE. For now, to be safe, we define it here. */ - -#define PROMOTE_RETURN_VALUE(val, func_type) \ - do { \ - if (func_type) \ - val = value_cast (func_type, val); \ - if ((TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT \ - || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_ENUM) \ - && TYPE_LENGTH (VALUE_TYPE (val)) < REGISTER_RAW_SIZE (0)) \ - val = value_cast (builtin_type_int, val); \ - } while (0) - -extern int vx29k_frame_chain_valid (CORE_ADDR, struct frame_info *); -#define FRAME_CHAIN_VALID(chain, thisframe) vx29k_frame_chain_valid (chain, thisframe) - -extern CORE_ADDR frame_saved_call_site (); - -#undef PREPARE_TO_INIT_FRAME_INFO -#define PREPARE_TO_INIT_FRAME_INFO(fci) do { \ - long current_msp = read_register (MSP_REGNUM); \ - if (PC_IN_CALL_DUMMY (fci->pc, current_msp, 0)) \ - { \ - fci->rsize = DUMMY_FRAME_RSIZE; \ - fci->msize = 0; \ - fci->saved_msp = \ - read_register_stack_integer (fci->frame + DUMMY_FRAME_RSIZE - 4, 4); \ - fci->flags |= (TRANSPARENT|MFP_USED); \ - return; \ - } \ - } while (0) +/* OBSOLETE /* Target machine description for VxWorks on the 29k, for GDB, the GNU debugger. */ +/* OBSOLETE Copyright 1994, 1995, 1998, 1999, 2000 Free Software Foundation, Inc. */ +/* OBSOLETE Contributed by Cygnus Support. */ +/* 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 "regcache.h" */ +/* OBSOLETE #include "value.h" */ +/* OBSOLETE #include "a29k/tm-a29k.h" */ +/* OBSOLETE #include "tm-vxworks.h" */ +/* OBSOLETE */ +/* OBSOLETE /* Number of registers in a ptrace_getregs call. */ */ +/* OBSOLETE */ +/* OBSOLETE #define VX_NUM_REGS (NUM_REGS) */ +/* OBSOLETE */ +/* OBSOLETE /* Number of registers in a ptrace_getfpregs call. */ */ +/* OBSOLETE */ +/* OBSOLETE /* #define VX_SIZE_FPREGS */ */ +/* OBSOLETE */ +/* OBSOLETE /* This is almost certainly the wrong place for this: */ */ +/* OBSOLETE #define LR2_REGNUM 34 */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* Vxworks has its own CALL_DUMMY since it manages breakpoints in the kernel */ */ +/* OBSOLETE */ +/* OBSOLETE #undef CALL_DUMMY */ +/* OBSOLETE */ +/* OBSOLETE /* Replace the breakpoint instruction in the CALL_DUMMY with a nop. */ +/* OBSOLETE For Vxworks, the breakpoint is set and deleted by calls to */ +/* OBSOLETE CALL_DUMMY_BREAK_SET and CALL_DUMMY_BREAK_DELETE. */ */ +/* OBSOLETE */ +/* OBSOLETE #error "This file is broken. GDB does not define HOST_BYTE_ORDER." */ +/* OBSOLETE #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER */ +/* OBSOLETE #define CALL_DUMMY {0x0400870f,\ */ +/* OBSOLETE 0x36008200|(MSP_HW_REGNUM), \ */ +/* OBSOLETE 0x15000040|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16), \ */ +/* OBSOLETE 0x03ff80ff, 0x02ff80ff, 0xc8008080, 0x70400101, 0x70400101} */ +/* OBSOLETE #else /* Byte order differs. */ */ +/* OBSOLETE #define CALL_DUMMY {0x0f870004,\ */ +/* OBSOLETE 0x00820036|(MSP_HW_REGNUM << 24), \ */ +/* OBSOLETE 0x40000015|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16), \ */ +/* OBSOLETE 0xff80ff03, 0xff80ff02, 0x808000c8, 0x01014070, 0x01014070} */ +/* OBSOLETE #endif /* Byte order differs. */ */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* For the basic CALL_DUMMY definitions, see "tm-29k.h." We use the */ +/* OBSOLETE same CALL_DUMMY code, but define FIX_CALL_DUMMY (and related macros) */ +/* OBSOLETE locally to handle remote debugging of VxWorks targets. The difference */ +/* OBSOLETE is in the setting and clearing of the breakpoint at the end of the */ +/* OBSOLETE CALL_DUMMY code fragment; under VxWorks, we can't simply insert a */ +/* OBSOLETE breakpoint instruction into the code, since that would interfere with */ +/* OBSOLETE the breakpoint management mechanism on the target. */ +/* OBSOLETE Note that CALL_DUMMY is a piece of code that is used to call any C function */ +/* OBSOLETE thru VxGDB */ */ +/* OBSOLETE */ +/* OBSOLETE /* The offset of the instruction within the CALL_DUMMY code where we */ +/* OBSOLETE want the inferior to stop after the function call has completed. */ +/* OBSOLETE call_function_by_hand () sets a breakpoint here (via CALL_DUMMY_BREAK_SET), */ +/* OBSOLETE which POP_FRAME later deletes (via CALL_DUMMY_BREAK_DELETE). */ */ +/* OBSOLETE */ +/* OBSOLETE #define CALL_DUMMY_STOP_OFFSET (7 * 4) */ +/* OBSOLETE */ +/* OBSOLETE /* The offset of the first instruction of the CALL_DUMMY code fragment */ +/* OBSOLETE relative to the frame pointer for a dummy frame. This is equal to */ +/* OBSOLETE the size of the CALL_DUMMY plus the arg_slop area size (see the diagram */ +/* OBSOLETE in "tm-29k.h"). */ */ +/* OBSOLETE /* PAD : the arg_slop area size doesn't appear to me to be useful since, the */ +/* OBSOLETE call dummy code no longer modify the msp. See below. This must be checked. */ */ +/* OBSOLETE */ +/* OBSOLETE #define CALL_DUMMY_OFFSET_IN_FRAME (CALL_DUMMY_LENGTH + 16 * 4) */ +/* OBSOLETE */ +/* OBSOLETE /* Insert the specified number of args and function address */ +/* OBSOLETE into a CALL_DUMMY sequence stored at DUMMYNAME, replace the third */ +/* OBSOLETE instruction (add msp, msp, 16*4) with a nop, and leave the final nop. */ +/* OBSOLETE We can't keep using a CALL_DUMMY that modify the msp since, for VxWorks, */ +/* OBSOLETE CALL_DUMMY is stored in the Memory Stack. Adding 16 words to the msp */ +/* OBSOLETE would then make possible for the inferior to overwrite the CALL_DUMMY code, */ +/* OBSOLETE thus creating a lot of trouble when exiting the inferior to come back in */ +/* OBSOLETE a CALL_DUMMY code that no longer exists... Furthermore, ESF are also stored */ +/* OBSOLETE from the msp in the memory stack. If msp is set higher than the dummy code, */ +/* OBSOLETE an ESF may clobber this code. */ */ +/* OBSOLETE */ +/* OBSOLETE #if TARGET_BYTE_ORDER == BFD_ENDIAN_BIG */ +/* OBSOLETE #define NOP_INSTR 0x70400101 */ +/* OBSOLETE #else /* Target is little endian */ */ +/* OBSOLETE #define NOP_INSTR 0x01014070 */ +/* OBSOLETE #endif */ +/* OBSOLETE */ +/* OBSOLETE #undef FIX_CALL_DUMMY */ +/* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE *(int *)((char *)dummyname + 8) = NOP_INSTR; \ */ +/* OBSOLETE STUFF_I16((char *)dummyname + CONST_INSN, fun); \ */ +/* OBSOLETE STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16); \ */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* For VxWorks, CALL_DUMMY must be stored in the stack of the task that is */ +/* OBSOLETE being debugged and executed "in the context of" this task */ */ +/* OBSOLETE */ +/* OBSOLETE #undef CALL_DUMMY_LOCATION */ +/* OBSOLETE #define CALL_DUMMY_LOCATION ON_STACK */ +/* OBSOLETE */ +/* OBSOLETE /* Set or delete a breakpoint at the location within a CALL_DUMMY code */ +/* OBSOLETE fragment where we want the target program to stop after the function */ +/* OBSOLETE call is complete. CALL_DUMMY_ADDR is the address of the first */ +/* OBSOLETE instruction in the CALL_DUMMY. DUMMY_FRAME_ADDR is the value of the */ +/* OBSOLETE frame pointer in the dummy frame. */ +/* OBSOLETE */ +/* OBSOLETE NOTE: in the both of the following definitions, we take advantage of */ +/* OBSOLETE knowledge of the implementation of the target breakpoint operation, */ +/* OBSOLETE in that we pass a null pointer as the second argument. It seems */ +/* OBSOLETE reasonable to assume that any target requiring the use of */ +/* OBSOLETE CALL_DUMMY_BREAK_{SET,DELETE} will not store the breakpoint */ +/* OBSOLETE shadow contents in GDB; in any case, this assumption is vaild */ +/* OBSOLETE for all VxWorks-related targets. */ */ +/* OBSOLETE */ +/* OBSOLETE #define CALL_DUMMY_BREAK_SET(call_dummy_addr) \ */ +/* OBSOLETE target_insert_breakpoint ((call_dummy_addr) + CALL_DUMMY_STOP_OFFSET, \ */ +/* OBSOLETE (char *) 0) */ +/* OBSOLETE */ +/* OBSOLETE #define CALL_DUMMY_BREAK_DELETE(dummy_frame_addr) \ */ +/* OBSOLETE target_remove_breakpoint ((dummy_frame_addr) - (CALL_DUMMY_OFFSET_IN_FRAME \ */ +/* OBSOLETE - CALL_DUMMY_STOP_OFFSET), \ */ +/* OBSOLETE (char *) 0) */ +/* OBSOLETE */ +/* OBSOLETE /* Return nonzero if the pc is executing within a CALL_DUMMY frame. */ */ +/* OBSOLETE */ +/* OBSOLETE #define PC_IN_CALL_DUMMY(pc, sp, frame_address) \ */ +/* OBSOLETE ((pc) >= (sp) \ */ +/* OBSOLETE && (pc) <= (sp) + CALL_DUMMY_OFFSET_IN_FRAME + CALL_DUMMY_LENGTH) */ +/* OBSOLETE */ +/* OBSOLETE /* Defining this prevents us from trying to pass a structure-valued argument */ +/* OBSOLETE to a function called via the CALL_DUMMY mechanism. This is not handled */ +/* OBSOLETE properly in call_function_by_hand (), and the fix might require re-writing */ +/* OBSOLETE the CALL_DUMMY handling for all targets (at least, a clean solution */ +/* OBSOLETE would probably require this). Arguably, this should go in "tm-29k.h" */ +/* OBSOLETE rather than here. */ */ +/* OBSOLETE */ +/* OBSOLETE #define STRUCT_VAL_ARGS_UNSUPPORTED */ +/* OBSOLETE */ +/* OBSOLETE #define BKPT_OFFSET (7 * 4) */ +/* OBSOLETE #define BKPT_INSTR 0x72500101 */ +/* OBSOLETE */ +/* OBSOLETE #undef FIX_CALL_DUMMY */ +/* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ */ +/* OBSOLETE {\ */ +/* OBSOLETE STUFF_I16((char *)dummyname + CONST_INSN, fun);\ */ +/* OBSOLETE STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16);\ */ +/* OBSOLETE *(int *)((char *)dummyname + BKPT_OFFSET) = BKPT_INSTR;\ */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* Offsets into jmp_buf. They are derived from VxWorks' REG_SET struct */ +/* OBSOLETE (see VxWorks' setjmp.h). Note that Sun2, Sun3 and SunOS4 and VxWorks have */ +/* OBSOLETE different REG_SET structs, hence different layouts for the jmp_buf struct. */ +/* OBSOLETE Only JB_PC is needed for getting the saved PC value. */ */ +/* OBSOLETE */ +/* OBSOLETE #define JB_ELEMENT_SIZE 4 /* size of each element in jmp_buf */ */ +/* OBSOLETE #define JB_PC 3 /* offset of pc (pc1) in jmp_buf */ */ +/* OBSOLETE */ +/* 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 #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) */ +/* OBSOLETE extern int get_longjmp_target (CORE_ADDR *); */ +/* OBSOLETE */ +/* OBSOLETE /* VxWorks adjusts the PC after a breakpoint has been hit. */ */ +/* OBSOLETE */ +/* OBSOLETE #undef DECR_PC_AFTER_BREAK */ +/* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Do whatever promotions are appropriate on a value being returned */ +/* OBSOLETE from a function. VAL is the user-supplied value, and FUNC_TYPE */ +/* OBSOLETE is the return type of the function if known, else 0. */ +/* OBSOLETE */ +/* OBSOLETE For the Am29k, as far as I understand, if the function return type is known, */ +/* OBSOLETE cast the value to that type; otherwise, ensure that integer return values */ +/* OBSOLETE fill all of gr96. */ +/* OBSOLETE */ +/* OBSOLETE This definition really belongs in "tm-29k.h", since it applies */ +/* OBSOLETE to most Am29K-based systems; but once moved into that file, it might */ +/* OBSOLETE need to be redefined for all Am29K-based targets that also redefine */ +/* OBSOLETE STORE_RETURN_VALUE. For now, to be safe, we define it here. */ */ +/* OBSOLETE */ +/* OBSOLETE #define PROMOTE_RETURN_VALUE(val, func_type) \ */ +/* OBSOLETE do { \ */ +/* OBSOLETE if (func_type) \ */ +/* OBSOLETE val = value_cast (func_type, val); \ */ +/* OBSOLETE if ((TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT \ */ +/* OBSOLETE || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_ENUM) \ */ +/* OBSOLETE && TYPE_LENGTH (VALUE_TYPE (val)) < REGISTER_RAW_SIZE (0)) \ */ +/* OBSOLETE val = value_cast (builtin_type_int, val); \ */ +/* OBSOLETE } while (0) */ +/* OBSOLETE */ +/* OBSOLETE extern int vx29k_frame_chain_valid (CORE_ADDR, struct frame_info *); */ +/* OBSOLETE #define FRAME_CHAIN_VALID(chain, thisframe) vx29k_frame_chain_valid (chain, thisframe) */ +/* OBSOLETE */ +/* OBSOLETE extern CORE_ADDR frame_saved_call_site (); */ +/* OBSOLETE */ +/* OBSOLETE #undef PREPARE_TO_INIT_FRAME_INFO */ +/* OBSOLETE #define PREPARE_TO_INIT_FRAME_INFO(fci) do { \ */ +/* OBSOLETE long current_msp = read_register (MSP_REGNUM); \ */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (fci->pc, current_msp, 0)) \ */ +/* OBSOLETE { \ */ +/* OBSOLETE fci->rsize = DUMMY_FRAME_RSIZE; \ */ +/* OBSOLETE fci->msize = 0; \ */ +/* OBSOLETE fci->saved_msp = \ */ +/* OBSOLETE read_register_stack_integer (fci->frame + DUMMY_FRAME_RSIZE - 4, 4); \ */ +/* OBSOLETE fci->flags |= (TRANSPARENT|MFP_USED); \ */ +/* OBSOLETE return; \ */ +/* OBSOLETE } \ */ +/* OBSOLETE } while (0) */ diff --git a/gdb/config/a29k/vx29k.mt b/gdb/config/a29k/vx29k.mt index 4d6f5cc..95a169e 100644 --- a/gdb/config/a29k/vx29k.mt +++ b/gdb/config/a29k/vx29k.mt @@ -1,4 +1,4 @@ -# Target: AMD 29k running VxWorks -TDEPFILES= a29k-tdep.o remote-vx.o remote-vx29k.o xdr_ld.o xdr_ptrace.o xdr_rdb.o -TM_FILE= tm-vx29k.h -MT_CFLAGS = -DNO_HIF_SUPPORT +# OBSOLETE # Target: AMD 29k running VxWorks +# OBSOLETE TDEPFILES= a29k-tdep.o remote-vx.o remote-vx29k.o xdr_ld.o xdr_ptrace.o xdr_rdb.o +# OBSOLETE TM_FILE= tm-vx29k.h +# OBSOLETE MT_CFLAGS = -DNO_HIF_SUPPORT |