| /* Target-specific definition for the Mitsubishi D30V |
| Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
| |
| 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. */ |
| |
| #ifndef TM_D30V_H |
| #define TM_D30V_H |
| |
| #include "regcache.h" |
| |
| /* Offset from address of function to start of its code. |
| Zero on most machines. */ |
| |
| #define FUNCTION_START_OFFSET 0 |
| |
| /* these are the addresses the D30V-EVA board maps data */ |
| /* and instruction memory to. */ |
| |
| #define DMEM_START 0x20000000 |
| #define IMEM_START 0x00000000 /* was 0x10000000 */ |
| #define STACK_START 0x20007ffe |
| |
| /* Forward decls for prototypes */ |
| struct frame_info; |
| struct frame_saved_regs; |
| struct type; |
| struct value; |
| |
| /* Advance PC across any function entry prologue instructions |
| to reach some "real" code. */ |
| |
| extern CORE_ADDR d30v_skip_prologue (CORE_ADDR); |
| #define SKIP_PROLOGUE(ip) (d30v_skip_prologue (ip)) |
| |
| |
| /* Stack grows downward. */ |
| #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) |
| |
| /* for a breakpoint, use "dbt || nop" */ |
| #define BREAKPOINT {0x00, 0xb0, 0x00, 0x00,\ |
| 0x00, 0xf0, 0x00, 0x00} |
| |
| /* If your kernel resets the pc after the trap happens you may need to |
| define this before including this file. */ |
| #define DECR_PC_AFTER_BREAK 0 |
| |
| #define REGISTER_NAMES \ |
| { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ |
| "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ |
| "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ |
| "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ |
| "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \ |
| "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \ |
| "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \ |
| "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", \ |
| "spi", "spu", \ |
| "psw", "bpsw", "pc", "bpc", "dpsw", "dpc", "cr6", "rpt_c", \ |
| "rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "eit_vb",\ |
| "int_s", "int_m", "a0", "a1" \ |
| } |
| |
| #define NUM_REGS 86 |
| |
| /* Register numbers of various important registers. |
| Note that some of these values are "real" register numbers, |
| and correspond to the general registers of the machine, |
| and some are "phony" register numbers which are too large |
| to be actual register numbers as far as the user is concerned |
| but do serve to get the desired values when passed to read_register. */ |
| |
| #define R0_REGNUM 0 |
| #define FP_REGNUM 61 |
| #define LR_REGNUM 62 |
| #define SP_REGNUM 63 |
| #define SPI_REGNUM 64 /* Interrupt stack pointer */ |
| #define SPU_REGNUM 65 /* User stack pointer */ |
| #define CREGS_START 66 |
| |
| #define PSW_REGNUM (CREGS_START + 0) /* psw, bpsw, or dpsw??? */ |
| #define PSW_SM (((unsigned long)0x80000000) >> 0) /* Stack mode: 0/SPI */ |
| /* 1/SPU */ |
| #define PSW_EA (((unsigned long)0x80000000) >> 2) /* Execution status */ |
| #define PSW_DB (((unsigned long)0x80000000) >> 3) /* Debug mode */ |
| #define PSW_DS (((unsigned long)0x80000000) >> 4) /* Debug EIT status */ |
| #define PSW_IE (((unsigned long)0x80000000) >> 5) /* Interrupt enable */ |
| #define PSW_RP (((unsigned long)0x80000000) >> 6) /* Repeat enable */ |
| #define PSW_MD (((unsigned long)0x80000000) >> 7) /* Modulo enable */ |
| #define PSW_F0 (((unsigned long)0x80000000) >> 17) /* F0 flag */ |
| #define PSW_F1 (((unsigned long)0x80000000) >> 19) /* F1 flag */ |
| #define PSW_F2 (((unsigned long)0x80000000) >> 21) /* F2 flag */ |
| #define PSW_F3 (((unsigned long)0x80000000) >> 23) /* F3 flag */ |
| #define PSW_S (((unsigned long)0x80000000) >> 25) /* Saturation flag */ |
| #define PSW_V (((unsigned long)0x80000000) >> 27) /* Overflow flag */ |
| #define PSW_VA (((unsigned long)0x80000000) >> 29) /* Accum. overflow */ |
| #define PSW_C (((unsigned long)0x80000000) >> 31) /* Carry/Borrow flag */ |
| |
| #define BPSW_REGNUM (CREGS_START + 1) /* Backup PSW (on interrupt) */ |
| #define PC_REGNUM (CREGS_START + 2) /* pc, bpc, or dpc??? */ |
| #define BPC_REGNUM (CREGS_START + 3) /* Backup PC (on interrupt) */ |
| #define DPSW_REGNUM (CREGS_START + 4) /* Backup PSW (on debug trap) */ |
| #define DPC_REGNUM (CREGS_START + 5) /* Backup PC (on debug trap) */ |
| #define RPT_C_REGNUM (CREGS_START + 7) /* Loop count */ |
| #define RPT_S_REGNUM (CREGS_START + 8) /* Loop start address */ |
| #define RPT_E_REGNUM (CREGS_START + 9) /* Loop end address */ |
| #define MOD_S_REGNUM (CREGS_START + 10) |
| #define MOD_E_REGNUM (CREGS_START + 11) |
| #define IBA_REGNUM (CREGS_START + 14) /* Instruction break address */ |
| #define EIT_VB_REGNUM (CREGS_START + 15) /* Vector base address */ |
| #define INT_S_REGNUM (CREGS_START + 16) /* Interrupt status */ |
| #define INT_M_REGNUM (CREGS_START + 17) /* Interrupt mask */ |
| #define A0_REGNUM 84 |
| #define A1_REGNUM 85 |
| |
| /* Say how much memory is needed to store a copy of the register set */ |
| #define REGISTER_BYTES ((NUM_REGS - 2) * 4 + 2 * 8) |
| |
| /* Index within `registers' of the first byte of the space for |
| register N. */ |
| |
| #define REGISTER_BYTE(N) \ |
| ( ((N) >= A0_REGNUM) ? ( ((N) - A0_REGNUM) * 8 + A0_REGNUM * 4 ) : ((N) * 4) ) |
| |
| /* Number of bytes of storage in the actual machine representation |
| for register N. */ |
| |
| #define REGISTER_RAW_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 4 ) |
| |
| /* Number of bytes of storage in the program's representation |
| for register N. */ |
| #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N) |
| |
| /* Largest value REGISTER_RAW_SIZE can have. */ |
| |
| #define MAX_REGISTER_RAW_SIZE 8 |
| |
| /* Largest value REGISTER_VIRTUAL_SIZE can have. */ |
| |
| #define MAX_REGISTER_VIRTUAL_SIZE 8 |
| |
| /* Return the GDB type object for the "standard" data type |
| of data in register N. */ |
| |
| #define REGISTER_VIRTUAL_TYPE(N) \ |
| ( ((N) < A0_REGNUM ) ? builtin_type_long : builtin_type_long_long) |
| |
| /* Writing to r0 is a noop (not an error or exception or anything like |
| that, however). */ |
| |
| #define CANNOT_STORE_REGISTER(regno) ((regno) == R0_REGNUM) |
| |
| void d30v_do_registers_info (int regnum, int fpregs); |
| |
| #define DO_REGISTERS_INFO d30v_do_registers_info |
| |
| /* Store the address of the place in which to copy the structure the |
| subroutine will return. This is called from call_function. |
| |
| We store structs through a pointer passed in R2 */ |
| |
| #define STORE_STRUCT_RETURN(ADDR, SP) \ |
| { write_register (2, (ADDR)); } |
| |
| |
| /* Write into appropriate registers a function return value |
| of type TYPE, given in virtual format. |
| |
| Things always get returned in R2/R3 */ |
| |
| #define STORE_RETURN_VALUE(TYPE,VALBUF) \ |
| write_register_bytes (REGISTER_BYTE(2), VALBUF, TYPE_LENGTH (TYPE)) |
| |
| |
| /* 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). */ |
| #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (((CORE_ADDR *)(REGBUF))[2]) |
| |
| |
| /* Define other aspects of the stack frame. |
| we keep a copy of the worked out return pc lying around, since it |
| is a useful bit of info */ |
| |
| #define EXTRA_FRAME_INFO \ |
| CORE_ADDR return_pc; \ |
| CORE_ADDR dummy; \ |
| int frameless; \ |
| int size; |
| |
| #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ |
| d30v_init_extra_frame_info(fromleaf, fi) |
| |
| extern void d30v_init_extra_frame_info (int fromleaf, struct frame_info *fi); |
| |
| /* 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_look_for_prologue (FI)) |
| |
| CORE_ADDR d30v_frame_chain (struct frame_info *frame); |
| #define FRAME_CHAIN(FRAME) d30v_frame_chain(FRAME) |
| extern int d30v_frame_chain_valid (CORE_ADDR, struct frame_info *); |
| #define FRAME_CHAIN_VALID(chain, thisframe) d30v_frame_chain_valid (chain, thisframe) |
| #define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc) |
| #define FRAME_ARGS_ADDRESS(fi) (fi)->frame |
| #define FRAME_LOCALS_ADDRESS(fi) (fi)->frame |
| |
| void d30v_init_frame_pc (int fromleaf, struct frame_info *prev); |
| #define INIT_FRAME_PC_FIRST(fromleaf, prev) d30v_init_frame_pc(fromleaf, prev) |
| #define INIT_FRAME_PC(fromleaf, prev) /* nada */ |
| |
| /* Immediately after a function call, return the saved pc. We can't */ |
| /* use frame->return_pc beause that is determined by reading R62 off the */ |
| /* stack and that may not be written yet. */ |
| |
| #define SAVED_PC_AFTER_CALL(frame) (read_register(LR_REGNUM)) |
| |
| /* Set VAL to the number of args passed to frame described by FI. |
| Can set VAL to -1, meaning no way to tell. */ |
| /* We can't tell how many args there are */ |
| |
| #define FRAME_NUM_ARGS(fi) (-1) |
| |
| /* Return number of bytes at start of arglist that are not really args. */ |
| |
| #define FRAME_ARGS_SKIP 0 |
| |
| |
| /* Put here the code to store, into a struct frame_saved_regs, |
| the addresses of the saved registers of frame described by FRAME_INFO. |
| This includes special registers such as pc and fp saved in special |
| ways in the stack frame. sp is even more special: |
| the address we return for it IS the sp for the next frame. */ |
| |
| #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ |
| d30v_frame_find_saved_regs(frame_info, &(frame_saved_regs)) |
| |
| extern void d30v_frame_find_saved_regs (struct frame_info *, |
| struct frame_saved_regs *); |
| |
| /* DUMMY FRAMES. Need these to support inferior function calls. |
| They work like this on D30V: |
| First we set a breakpoint at 0 or __start. |
| Then we push all the registers onto the stack. |
| Then put the function arguments in the proper registers and set r13 |
| to our breakpoint address. |
| Finally call the function directly. |
| When it hits the breakpoint, clear the break point and pop the old |
| register contents off the stack. */ |
| |
| #define CALL_DUMMY { 0 } |
| #define PUSH_DUMMY_FRAME |
| #define CALL_DUMMY_START_OFFSET 0 |
| #define CALL_DUMMY_LOCATION AT_ENTRY_POINT |
| #define CALL_DUMMY_BREAKPOINT_OFFSET (0) |
| |
| extern CORE_ADDR d30v_call_dummy_address (void); |
| #define CALL_DUMMY_ADDRESS() d30v_call_dummy_address() |
| |
| #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ |
| sp = d30v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p) |
| |
| #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) |
| |
| extern CORE_ADDR d30v_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, |
| int, struct value **, |
| struct type *, int); |
| #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ |
| (d30v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) |
| extern CORE_ADDR d30v_push_arguments (int, struct value **, CORE_ADDR, int, |
| CORE_ADDR); |
| |
| |
| /* 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 DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
| d30v_extract_return_value(TYPE, REGBUF, VALBUF) |
| extern void d30v_extract_return_value (struct type *, char *, char *); |
| |
| |
| /* Discard from the stack the innermost frame, |
| restoring all saved registers. */ |
| #define POP_FRAME d30v_pop_frame(); |
| extern void d30v_pop_frame (void); |
| |
| #define REGISTER_SIZE 4 |
| |
| /* Need to handle SP special, as we need to select between spu and spi. */ |
| #if 0 /* XXX until the simulator is fixed */ |
| #define TARGET_READ_SP() ((read_register (PSW_REGNUM) & PSW_SM) \ |
| ? read_register (SPU_REGNUM) \ |
| : read_register (SPI_REGNUM)) |
| |
| #define TARGET_WRITE_SP(val) ((read_register (PSW_REGNUM) & PSW_SM) \ |
| ? write_register (SPU_REGNUM, (val)) \ |
| : write_register (SPI_REGNUM, (val))) |
| #endif |
| |
| #define STACK_ALIGN(len) (((len) + 7 ) & ~7) |
| |
| /* Turn this on to cause remote-sim.c to use sim_set/clear_breakpoint. */ |
| |
| #define SIM_HAS_BREAKPOINTS |
| |
| #endif /* TM_D30V_H */ |