diff options
Diffstat (limited to 'gdb/config/i960/tm-i960.h')
| -rw-r--r-- | gdb/config/i960/tm-i960.h | 690 |
1 files changed, 345 insertions, 345 deletions
diff --git a/gdb/config/i960/tm-i960.h b/gdb/config/i960/tm-i960.h index a0ae164a658..91bdf91f14e 100644 --- a/gdb/config/i960/tm-i960.h +++ b/gdb/config/i960/tm-i960.h @@ -1,345 +1,345 @@ -/* Parameters for target machine Intel 960, for GDB, the GNU debugger. - - Copyright 1990, 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2002 Free - Software Foundation, Inc. - - Contributed by Intel Corporation. - 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. */ - -/* Definitions to target GDB to any i960. */ - -#ifndef I80960 -#define I80960 -#endif - -#include "doublest.h" - -/* Hook for the SYMBOL_CLASS of a parameter when decoding DBX symbol - information. In the i960, parameters can be stored as locals or as - args, depending on the type of the debug record. - - From empirical observation, gcc960 uses N_LSYM to indicate - arguments passed in registers and then copied immediately - to the frame, and N_PSYM to indicate arguments passed in a - g14-relative argument block. */ - -#define DBX_PARM_SYMBOL_CLASS(type) ((type == N_LSYM)? LOC_LOCAL_ARG: LOC_ARG) - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Advance ip across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(ip) (i960_skip_prologue (ip)) -extern CORE_ADDR i960_skip_prologue (); - -/* Immediately after a function call, return the saved ip. - Can't always 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) (saved_pc_after_call (frame)) -extern CORE_ADDR saved_pc_after_call (); - -/* Stack grows upward */ - -#define INNER_THAN(lhs,rhs) ((lhs) > (rhs)) - -/* 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 - -/* Number of machine registers */ -#define NUM_REGS 40 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -#define REGISTER_NAMES { \ - /* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7", \ - /* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",\ - /* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \ - /* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp", \ - /* 32 */ "pcw", "ac", "tc", "ip", "fp0", "fp1", "fp2", "fp3",\ -} - -/* Register numbers of various important registers (used to index - into arrays of register names and register values). */ - -#define R0_REGNUM 0 /* First local register */ -#define SP_REGNUM 1 /* Contains address of top of stack */ -#define RIP_REGNUM 2 /* Return instruction pointer (local r2) */ -#define R15_REGNUM 15 /* Last local register */ -#define G0_REGNUM 16 /* First global register */ -#define G13_REGNUM 29 /* g13 - holds struct return address */ -#define G14_REGNUM 30 /* g14 - ptr to arg block / leafproc return address */ -#define FP_REGNUM 31 /* Contains address of executing stack frame */ -#define PCW_REGNUM 32 /* process control word */ -#define ACW_REGNUM 33 /* arithmetic control word */ -#define TCW_REGNUM 34 /* trace control word */ -#define IP_REGNUM 35 /* instruction pointer */ -#define FP0_REGNUM 36 /* First floating point register */ - -/* Some registers have more than one name */ - -#define PC_REGNUM IP_REGNUM /* GDB refers to ip as the Program Counter */ -#define PFP_REGNUM R0_REGNUM /* Previous frame pointer */ - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES ((36*4) + (4*10)) - -/* Index within `registers' of the first byte of the space for register N. */ - -#define REGISTER_BYTE(N) ( (N) < FP0_REGNUM ? \ - (4*(N)) : ((10*(N)) - (6*FP0_REGNUM)) ) - -/* The i960 has register windows, sort of. */ - -extern void i960_get_saved_register (char *raw_buffer, - int *optimized, - CORE_ADDR *addrp, - struct frame_info *frame, - int regnum, - enum lval_type *lval); - -#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ - i960_get_saved_register(raw_buffer, optimized, addrp, frame, regnum, lval) - - -/* Number of bytes of storage in the actual machine representation - for register N. On the i960, all regs are 4 bytes except for floating - point, which are 10. NINDY only sends us 8 byte values for these, - which is a pain, but VxWorks handles this correctly, so we must. */ - -#define REGISTER_RAW_SIZE(N) ( (N) < FP0_REGNUM ? 4 : 10 ) - -/* Number of bytes of storage in the program's representation for register N. */ - -#define REGISTER_VIRTUAL_SIZE(N) ( (N) < FP0_REGNUM ? 4 : 8 ) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 10 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 8 - -#include "floatformat.h" - -#define TARGET_LONG_DOUBLE_FORMAT &floatformat_i960_ext - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -struct type *i960_register_type (int regnum); -#define REGISTER_VIRTUAL_TYPE(N) i960_register_type (N) - -/* Macros for understanding function return values... */ - -/* Does the specified function use the "struct returning" convention - or the "value returning" convention? The "value returning" convention - almost invariably returns the entire value in registers. The - "struct returning" convention often returns the entire value in - memory, and passes a pointer (out of or into the function) saying - where the value (is or should go). - - Since this sometimes depends on whether it was compiled with GCC, - this is also an argument. This is used in call_function to build a - stack, and in value_being_returned to print return values. - - On i960, a structure is returned in registers g0-g3, if it will fit. - If it's more than 16 bytes long, g13 pointed to it on entry. */ - -extern use_struct_convention_fn i960_use_struct_convention; -#define USE_STRUCT_CONVENTION(gcc_p, type) i960_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. This is only called if USE_STRUCT_CONVENTION for this - type is 0. - - On the i960 we just take as many bytes as we need from G0 through G3. */ - -#define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - memcpy(VALBUF, REGBUF+REGISTER_BYTE(G0_REGNUM), TYPE_LENGTH (TYPE)) - -/* If USE_STRUCT_CONVENTION produces a 1, - extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). - - Address of where to put structure was passed in in global - register g13 on entry. God knows what's in g13 now. The - (..., 0) below is to make it appear to return a value, though - actually all it does is call error(). */ - -#define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ - (error("Don't know where large structure is returned on i960"), 0) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format, for "value returning" functions. - - For 'return' command: not (yet) implemented for i960. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - error ("Returning values from functions is not implemented in i960 gdb") - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ - -#define STORE_STRUCT_RETURN(ADDR, SP) \ - error ("Returning values from functions is not implemented in i960 gdb") - -/* Describe the pointer in each stack frame to the previous stack frame - (its caller). */ - -/* FRAME_CHAIN takes a frame's nominal address - 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. */ - -/* We cache information about saved registers in the frame structure, - to save us from having to re-scan function prologues every time - a register in a non-current frame is accessed. */ - -#define EXTRA_FRAME_INFO \ - struct frame_saved_regs *fsr; \ - CORE_ADDR arg_pointer; - -/* Zero the frame_saved_regs pointer when the frame is initialized, - so that FRAME_FIND_SAVED_REGS () will know to allocate and - initialize a frame_saved_regs struct the first time it is called. - Set the arg_pointer to -1, which is not valid; 0 and other values - indicate real, cached values. */ - -#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ - ((fi)->fsr = 0, (fi)->arg_pointer = -1) - -/* On the i960, we get the chain pointer by reading the PFP saved - on the stack and clearing the status bits. */ - -#define FRAME_CHAIN(thisframe) \ - (read_memory_integer (FRAME_FP(thisframe), 4) & ~0xf) - -/* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one - and has no caller. - - On the i960, each various target system type must define FRAME_CHAIN_VALID, - since it differs between NINDY and VxWorks, the two currently supported - targets types. We leave it undefined here. */ - - -/* 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. */ - -CORE_ADDR leafproc_return (CORE_ADDR ip); -#define FRAMELESS_FUNCTION_INVOCATION(FI) \ - (leafproc_return ((FI)->pc) != 0) - -/* Note that in the i960 architecture the return pointer is saved in the - *caller's* stack frame. - - Make sure to zero low-order bits because of bug in 960CA A-step part - (instruction addresses should always be word-aligned anyway). */ - -#define FRAME_SAVED_PC(frame) \ - ((read_memory_integer(FRAME_CHAIN(frame)+8,4)) & ~3) - -/* On the i960, FRAME_ARGS_ADDRESS should return the value of - g14 as passed into the frame, if known. We need a function for this. - We cache this value in the frame info if we've already looked it up. */ - -#define FRAME_ARGS_ADDRESS(fi) \ - (((fi)->arg_pointer != -1)? (fi)->arg_pointer: frame_args_address (fi, 0)) -extern CORE_ADDR frame_args_address (); /* i960-tdep.c */ - -/* This is the same except it should return 0 when - it does not really know where the args are, rather than guessing. - This value is not cached since it is only used infrequently. */ - -#define FRAME_ARGS_ADDRESS_CORRECT(fi) (frame_args_address (fi, 1)) - -#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame - -/* Set NUMARGS to the number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -#define FRAME_NUM_ARGS(fi) (-1) - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 0 - -/* Produce the positions of the saved registers in a stack frame. */ - -#define FRAME_FIND_SAVED_REGS(frame_info_addr, sr) \ - frame_find_saved_regs (frame_info_addr, &sr) -extern void frame_find_saved_regs (); /* See i960-tdep.c */ - -/* Things needed for making calls to functions in the inferior process */ - -/* Push an empty stack frame, to record the current ip, etc. - - Not (yet?) implemented for i960. */ - -#define PUSH_DUMMY_FRAME \ -error("Function calls into the inferior process are not supported on the i960") - -/* Discard from the stack the innermost frame, restoring all registers. */ - - -void i960_pop_frame (void); -#define POP_FRAME \ - i960_pop_frame () - - -/* This sequence of words is the instructions - - callx 0x00000000 - fmark - */ - -/* #define CALL_DUMMY { 0x86003000, 0x00000000, 0x66003e00 } */ - - /* #define CALL_DUMMY_START_OFFSET 0 *//* Start execution at beginning of dummy */ - -/* Indicate that we don't support calling inferior child functions. */ - -#undef CALL_DUMMY - -/* Insert the specified number of args and function address - into a call sequence of the above form stored at 'dummyname'. - - Ignore arg count on i960. */ - -/* #define FIX_CALL_DUMMY(dummyname, fun, nargs) *(((int *)dummyname)+1) = fun */ - -#undef FIX_CALL_DUMMY - - -/* Interface definitions for kernel debugger KDB */ -/* (Not relevant to i960.) */ +// OBSOLETE /* Parameters for target machine Intel 960, for GDB, the GNU debugger. +// OBSOLETE +// OBSOLETE Copyright 1990, 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2002 Free +// OBSOLETE Software Foundation, Inc. +// OBSOLETE +// OBSOLETE Contributed by Intel Corporation. +// 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 /* Definitions to target GDB to any i960. */ +// OBSOLETE +// OBSOLETE #ifndef I80960 +// OBSOLETE #define I80960 +// OBSOLETE #endif +// OBSOLETE +// OBSOLETE #include "doublest.h" +// OBSOLETE +// OBSOLETE /* Hook for the SYMBOL_CLASS of a parameter when decoding DBX symbol +// OBSOLETE information. In the i960, parameters can be stored as locals or as +// OBSOLETE args, depending on the type of the debug record. +// OBSOLETE +// OBSOLETE From empirical observation, gcc960 uses N_LSYM to indicate +// OBSOLETE arguments passed in registers and then copied immediately +// OBSOLETE to the frame, and N_PSYM to indicate arguments passed in a +// OBSOLETE g14-relative argument block. */ +// OBSOLETE +// OBSOLETE #define DBX_PARM_SYMBOL_CLASS(type) ((type == N_LSYM)? LOC_LOCAL_ARG: LOC_ARG) +// 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 ip across any function entry prologue instructions +// OBSOLETE to reach some "real" code. */ +// OBSOLETE +// OBSOLETE #define SKIP_PROLOGUE(ip) (i960_skip_prologue (ip)) +// OBSOLETE extern CORE_ADDR i960_skip_prologue (); +// OBSOLETE +// OBSOLETE /* Immediately after a function call, return the saved ip. +// OBSOLETE Can't always go through the frames for this because on some machines +// OBSOLETE the new frame is not set up until the new function +// OBSOLETE executes some instructions. */ +// OBSOLETE +// OBSOLETE #define SAVED_PC_AFTER_CALL(frame) (saved_pc_after_call (frame)) +// OBSOLETE extern CORE_ADDR saved_pc_after_call (); +// OBSOLETE +// OBSOLETE /* Stack grows upward */ +// OBSOLETE +// OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) > (rhs)) +// 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 /* Number of machine registers */ +// OBSOLETE #define NUM_REGS 40 +// OBSOLETE +// OBSOLETE /* Initializer for an array of names of registers. +// OBSOLETE There should be NUM_REGS strings in this initializer. */ +// OBSOLETE +// OBSOLETE #define REGISTER_NAMES { \ +// OBSOLETE /* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7", \ +// OBSOLETE /* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",\ +// OBSOLETE /* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \ +// OBSOLETE /* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp", \ +// OBSOLETE /* 32 */ "pcw", "ac", "tc", "ip", "fp0", "fp1", "fp2", "fp3",\ +// OBSOLETE } +// OBSOLETE +// OBSOLETE /* Register numbers of various important registers (used to index +// OBSOLETE into arrays of register names and register values). */ +// OBSOLETE +// OBSOLETE #define R0_REGNUM 0 /* First local register */ +// OBSOLETE #define SP_REGNUM 1 /* Contains address of top of stack */ +// OBSOLETE #define RIP_REGNUM 2 /* Return instruction pointer (local r2) */ +// OBSOLETE #define R15_REGNUM 15 /* Last local register */ +// OBSOLETE #define G0_REGNUM 16 /* First global register */ +// OBSOLETE #define G13_REGNUM 29 /* g13 - holds struct return address */ +// OBSOLETE #define G14_REGNUM 30 /* g14 - ptr to arg block / leafproc return address */ +// OBSOLETE #define FP_REGNUM 31 /* Contains address of executing stack frame */ +// OBSOLETE #define PCW_REGNUM 32 /* process control word */ +// OBSOLETE #define ACW_REGNUM 33 /* arithmetic control word */ +// OBSOLETE #define TCW_REGNUM 34 /* trace control word */ +// OBSOLETE #define IP_REGNUM 35 /* instruction pointer */ +// OBSOLETE #define FP0_REGNUM 36 /* First floating point register */ +// OBSOLETE +// OBSOLETE /* Some registers have more than one name */ +// OBSOLETE +// OBSOLETE #define PC_REGNUM IP_REGNUM /* GDB refers to ip as the Program Counter */ +// OBSOLETE #define PFP_REGNUM R0_REGNUM /* Previous frame pointer */ +// 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 ((36*4) + (4*10)) +// OBSOLETE +// OBSOLETE /* Index within `registers' of the first byte of the space for register N. */ +// OBSOLETE +// OBSOLETE #define REGISTER_BYTE(N) ( (N) < FP0_REGNUM ? \ +// OBSOLETE (4*(N)) : ((10*(N)) - (6*FP0_REGNUM)) ) +// OBSOLETE +// OBSOLETE /* The i960 has register windows, sort of. */ +// OBSOLETE +// OBSOLETE extern void i960_get_saved_register (char *raw_buffer, +// OBSOLETE int *optimized, +// OBSOLETE CORE_ADDR *addrp, +// OBSOLETE struct frame_info *frame, +// OBSOLETE int regnum, +// OBSOLETE enum lval_type *lval); +// OBSOLETE +// OBSOLETE #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ +// OBSOLETE i960_get_saved_register(raw_buffer, optimized, addrp, frame, regnum, lval) +// OBSOLETE +// OBSOLETE +// OBSOLETE /* Number of bytes of storage in the actual machine representation +// OBSOLETE for register N. On the i960, all regs are 4 bytes except for floating +// OBSOLETE point, which are 10. NINDY only sends us 8 byte values for these, +// OBSOLETE which is a pain, but VxWorks handles this correctly, so we must. */ +// OBSOLETE +// OBSOLETE #define REGISTER_RAW_SIZE(N) ( (N) < FP0_REGNUM ? 4 : 10 ) +// OBSOLETE +// OBSOLETE /* Number of bytes of storage in the program's representation for register N. */ +// OBSOLETE +// OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) ( (N) < FP0_REGNUM ? 4 : 8 ) +// OBSOLETE +// OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. */ +// OBSOLETE +// OBSOLETE #define MAX_REGISTER_RAW_SIZE 10 +// OBSOLETE +// OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. */ +// OBSOLETE +// OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE 8 +// OBSOLETE +// OBSOLETE #include "floatformat.h" +// OBSOLETE +// OBSOLETE #define TARGET_LONG_DOUBLE_FORMAT &floatformat_i960_ext +// OBSOLETE +// OBSOLETE /* Return the GDB type object for the "standard" data type +// OBSOLETE of data in register N. */ +// OBSOLETE +// OBSOLETE struct type *i960_register_type (int regnum); +// OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) i960_register_type (N) +// OBSOLETE +// OBSOLETE /* Macros for understanding function return values... */ +// OBSOLETE +// OBSOLETE /* Does the specified function use the "struct returning" convention +// OBSOLETE or the "value returning" convention? The "value returning" convention +// OBSOLETE almost invariably returns the entire value in registers. The +// OBSOLETE "struct returning" convention often returns the entire value in +// OBSOLETE memory, and passes a pointer (out of or into the function) saying +// OBSOLETE where the value (is or should go). +// OBSOLETE +// OBSOLETE Since this sometimes depends on whether it was compiled with GCC, +// OBSOLETE this is also an argument. This is used in call_function to build a +// OBSOLETE stack, and in value_being_returned to print return values. +// OBSOLETE +// OBSOLETE On i960, a structure is returned in registers g0-g3, if it will fit. +// OBSOLETE If it's more than 16 bytes long, g13 pointed to it on entry. */ +// OBSOLETE +// OBSOLETE extern use_struct_convention_fn i960_use_struct_convention; +// OBSOLETE #define USE_STRUCT_CONVENTION(gcc_p, type) i960_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. This is only called if USE_STRUCT_CONVENTION for this +// OBSOLETE type is 0. +// OBSOLETE +// OBSOLETE On the i960 we just take as many bytes as we need from G0 through G3. */ +// OBSOLETE +// OBSOLETE #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ +// OBSOLETE memcpy(VALBUF, REGBUF+REGISTER_BYTE(G0_REGNUM), TYPE_LENGTH (TYPE)) +// OBSOLETE +// OBSOLETE /* If USE_STRUCT_CONVENTION produces a 1, +// OBSOLETE extract from an array REGBUF containing the (raw) register state +// OBSOLETE the address in which a function should return its structure value, +// OBSOLETE as a CORE_ADDR (or an expression that can be used as one). +// OBSOLETE +// OBSOLETE Address of where to put structure was passed in in global +// OBSOLETE register g13 on entry. God knows what's in g13 now. The +// OBSOLETE (..., 0) below is to make it appear to return a value, though +// OBSOLETE actually all it does is call error(). */ +// OBSOLETE +// OBSOLETE #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ +// OBSOLETE (error("Don't know where large structure is returned on i960"), 0) +// OBSOLETE +// OBSOLETE /* Write into appropriate registers a function return value +// OBSOLETE of type TYPE, given in virtual format, for "value returning" functions. +// OBSOLETE +// OBSOLETE For 'return' command: not (yet) implemented for i960. */ +// OBSOLETE +// OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ +// OBSOLETE error ("Returning values from functions is not implemented in i960 gdb") +// 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 +// OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) \ +// OBSOLETE error ("Returning values from functions is not implemented in i960 gdb") +// OBSOLETE +// OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame +// OBSOLETE (its caller). */ +// OBSOLETE +// OBSOLETE /* FRAME_CHAIN takes a frame's nominal address +// 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 /* We cache information about saved registers in the frame structure, +// OBSOLETE to save us from having to re-scan function prologues every time +// OBSOLETE a register in a non-current frame is accessed. */ +// OBSOLETE +// OBSOLETE #define EXTRA_FRAME_INFO \ +// OBSOLETE struct frame_saved_regs *fsr; \ +// OBSOLETE CORE_ADDR arg_pointer; +// OBSOLETE +// OBSOLETE /* Zero the frame_saved_regs pointer when the frame is initialized, +// OBSOLETE so that FRAME_FIND_SAVED_REGS () will know to allocate and +// OBSOLETE initialize a frame_saved_regs struct the first time it is called. +// OBSOLETE Set the arg_pointer to -1, which is not valid; 0 and other values +// OBSOLETE indicate real, cached values. */ +// OBSOLETE +// OBSOLETE #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ +// OBSOLETE ((fi)->fsr = 0, (fi)->arg_pointer = -1) +// OBSOLETE +// OBSOLETE /* On the i960, we get the chain pointer by reading the PFP saved +// OBSOLETE on the stack and clearing the status bits. */ +// OBSOLETE +// OBSOLETE #define FRAME_CHAIN(thisframe) \ +// OBSOLETE (read_memory_integer (FRAME_FP(thisframe), 4) & ~0xf) +// OBSOLETE +// OBSOLETE /* FRAME_CHAIN_VALID returns zero if the given frame is the outermost one +// OBSOLETE and has no caller. +// OBSOLETE +// OBSOLETE On the i960, each various target system type must define FRAME_CHAIN_VALID, +// OBSOLETE since it differs between NINDY and VxWorks, the two currently supported +// OBSOLETE targets types. We leave it undefined here. */ +// OBSOLETE +// OBSOLETE +// OBSOLETE /* A macro that tells us whether the function invocation represented +// OBSOLETE by FI does not have a frame on the stack associated with it. If it +// OBSOLETE does not, FRAMELESS is set to 1, else 0. */ +// OBSOLETE +// OBSOLETE CORE_ADDR leafproc_return (CORE_ADDR ip); +// OBSOLETE #define FRAMELESS_FUNCTION_INVOCATION(FI) \ +// OBSOLETE (leafproc_return ((FI)->pc) != 0) +// OBSOLETE +// OBSOLETE /* Note that in the i960 architecture the return pointer is saved in the +// OBSOLETE *caller's* stack frame. +// OBSOLETE +// OBSOLETE Make sure to zero low-order bits because of bug in 960CA A-step part +// OBSOLETE (instruction addresses should always be word-aligned anyway). */ +// OBSOLETE +// OBSOLETE #define FRAME_SAVED_PC(frame) \ +// OBSOLETE ((read_memory_integer(FRAME_CHAIN(frame)+8,4)) & ~3) +// OBSOLETE +// OBSOLETE /* On the i960, FRAME_ARGS_ADDRESS should return the value of +// OBSOLETE g14 as passed into the frame, if known. We need a function for this. +// OBSOLETE We cache this value in the frame info if we've already looked it up. */ +// OBSOLETE +// OBSOLETE #define FRAME_ARGS_ADDRESS(fi) \ +// OBSOLETE (((fi)->arg_pointer != -1)? (fi)->arg_pointer: frame_args_address (fi, 0)) +// OBSOLETE extern CORE_ADDR frame_args_address (); /* i960-tdep.c */ +// OBSOLETE +// OBSOLETE /* This is the same except it should return 0 when +// OBSOLETE it does not really know where the args are, rather than guessing. +// OBSOLETE This value is not cached since it is only used infrequently. */ +// OBSOLETE +// OBSOLETE #define FRAME_ARGS_ADDRESS_CORRECT(fi) (frame_args_address (fi, 1)) +// OBSOLETE +// OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) (fi)->frame +// OBSOLETE +// OBSOLETE /* Set NUMARGS to the number of args passed to a frame. +// OBSOLETE Can return -1, meaning no way to tell. */ +// OBSOLETE +// OBSOLETE #define FRAME_NUM_ARGS(fi) (-1) +// OBSOLETE +// OBSOLETE /* Return number of bytes at start of arglist that are not really args. */ +// OBSOLETE +// OBSOLETE #define FRAME_ARGS_SKIP 0 +// OBSOLETE +// OBSOLETE /* Produce the positions of the saved registers in a stack frame. */ +// OBSOLETE +// OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info_addr, sr) \ +// OBSOLETE frame_find_saved_regs (frame_info_addr, &sr) +// OBSOLETE extern void frame_find_saved_regs (); /* See i960-tdep.c */ +// OBSOLETE +// OBSOLETE /* Things needed for making calls to functions in the inferior process */ +// OBSOLETE +// OBSOLETE /* Push an empty stack frame, to record the current ip, etc. +// OBSOLETE +// OBSOLETE Not (yet?) implemented for i960. */ +// OBSOLETE +// OBSOLETE #define PUSH_DUMMY_FRAME \ +// OBSOLETE error("Function calls into the inferior process are not supported on the i960") +// OBSOLETE +// OBSOLETE /* Discard from the stack the innermost frame, restoring all registers. */ +// OBSOLETE +// OBSOLETE +// OBSOLETE void i960_pop_frame (void); +// OBSOLETE #define POP_FRAME \ +// OBSOLETE i960_pop_frame () +// OBSOLETE +// OBSOLETE +// OBSOLETE /* This sequence of words is the instructions +// OBSOLETE +// OBSOLETE callx 0x00000000 +// OBSOLETE fmark +// OBSOLETE */ +// OBSOLETE +// OBSOLETE /* #define CALL_DUMMY { 0x86003000, 0x00000000, 0x66003e00 } */ +// OBSOLETE +// OBSOLETE /* #define CALL_DUMMY_START_OFFSET 0 *//* Start execution at beginning of dummy */ +// OBSOLETE +// OBSOLETE /* Indicate that we don't support calling inferior child functions. */ +// OBSOLETE +// OBSOLETE #undef CALL_DUMMY +// 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 Ignore arg count on i960. */ +// OBSOLETE +// OBSOLETE /* #define FIX_CALL_DUMMY(dummyname, fun, nargs) *(((int *)dummyname)+1) = fun */ +// OBSOLETE +// OBSOLETE #undef FIX_CALL_DUMMY +// OBSOLETE +// OBSOLETE +// OBSOLETE /* Interface definitions for kernel debugger KDB */ +// OBSOLETE /* (Not relevant to i960.) */ |