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Diffstat (limited to 'gdb/config/a29k/tm-a29k.h')
| -rw-r--r-- | gdb/config/a29k/tm-a29k.h | 707 |
1 files changed, 0 insertions, 707 deletions
diff --git a/gdb/config/a29k/tm-a29k.h b/gdb/config/a29k/tm-a29k.h deleted file mode 100644 index 4892ec5..0000000 --- a/gdb/config/a29k/tm-a29k.h +++ /dev/null @@ -1,707 +0,0 @@ -/* Parameters for target machine AMD 29000, for GDB, the GNU debugger. - Copyright 1990, 1991, 1993, 1994 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. */ - -/* 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 BIG_ENDIAN - -/* Floating point uses IEEE representations. */ -#define IEEE_FLOAT - -/* 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) \ - { pc = skip_prologue (pc); } -CORE_ADDR 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 == BIG_ENDIAN -#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)); \ - } - -/* 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. */ - -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_info, 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. */ - -/* A macro that tells us whether the function invocation represented - by FI does not have a frame on the stack associated with it. If it - does not, FRAMELESS is set to 1, else 0. */ -#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ - (FRAMELESS) = 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(numargs, fi) ((numargs) = -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. */ - -#define GET_SAVED_REGISTER - -/* Call function stuff. */ - -/* 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. */ - -/* 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) - */ - -#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 == BIG_ENDIAN -#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 PARAMS ((int, CORE_ADDR *)); |