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/*===========================================================================*/
/* Copyright (C) 2001 Authors                                                */
/*                                                                           */
/* This source file may be used and distributed without restriction provided */
/* that this copyright statement is not removed from the file and that any   */
/* derivative work contains the original copyright notice and the associated */
/* disclaimer.                                                               */
/*                                                                           */
/* This source file is free software; you can redistribute it and/or modify  */
/* it under the terms of the GNU Lesser General Public License as published  */
/* by the Free Software Foundation; either version 2.1 of the License, or    */
/* (at your option) any later version.                                       */
/*                                                                           */
/* This source 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 Lesser General Public       */
/* License for more details.                                                 */
/*                                                                           */
/* You should have received a copy of the GNU Lesser General Public License  */
/* along with this source; if not, write to the Free Software Foundation,    */
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA        */
/*                                                                           */
/*===========================================================================*/
/*                 SINGLE-OPERAND ARITHMETIC: PUSH  INSTRUCTION              */
/*---------------------------------------------------------------------------*/
/* Test the PUSH  instruction.                                               */
/*                                                                           */
/* Author(s):                                                                */
/*             - Olivier Girard,    olgirard@gmail.com                       */
/*                                                                           */
/*---------------------------------------------------------------------------*/
/* $Rev: 141 $                                                                */
/* $LastChangedBy: olivier.girard $                                          */
/* $LastChangedDate: 2012-05-05 23:22:06 +0200 (Sat, 05 May 2012) $          */
/*===========================================================================*/

.include "pmem_defs.asm"

.global main

main:
        /* -------------- TEST INSTRUCTION IN WORD MODE ------------------- */

        # Initialization
        #------------------------

        mov     #0x0050, r4        ;# Initialize RAM
        mov   #DMEM_200, r5
clear_mem_loop:
        clr    0(r5)
        incd     r5
        dec      r4
        jnz     clear_mem_loop 


        mov   #DMEM_252, r1        ;# Initialize stack pointer


        mov     #0x1000, r15


        # Addressing mode: Rn
        #------------------------

        mov     #0x7524, r4
        mov     #0x5555, &DMEM_300
        push          r4           ;# PUSH (r4=0x7524  =>  @=0x0250)

        mov     #0x1cb6, r6
        mov     #0x5555, &DMEM_300
        push          r6           ;# PUSH (r6=0x1cb6  =>  @=0x024E)

        mov     #0x2000, r15


        # Addressing mode: @Rn
        #------------------------

        mov   #DMEM_212, r4
        mov     #0x1234, &DMEM_212
        mov     #0x5555, &DMEM_300
        push        @r4           ;# PUSH (0x1234  =>  @=0x024C)

        mov   #DMEM_214, r6
        mov     #0x5678, &DMEM_214
        mov     #0x5555, &DMEM_300
        push        @r6           ;# PUSH (0x5678  =>  @=0x024A)

        mov     #0x3000, r15


        # Addressing mode: @Rn+
        #------------------------

        mov   #DMEM_216, r4
        mov     #0x9abc, &DMEM_216
        mov     #0x5555, &DMEM_300
        push       @r4+           ;# PUSH (0x9abc  =>  @=0x0248)

        mov     #0xdef0, &DMEM_218
        mov     #0x5555, &DMEM_300
        push       @r4+           ;# PUSH (0xdef0  =>  @=0x0246)

        mov     #0x4000, r15


        # Addressing mode: X(Rn)
        #------------------------

        mov   #DMEM_200, r4
        mov     #0x0fed, &DMEM_21A
        mov     #0x5555, &DMEM_300
        push      26(r4)           ;# PUSH (0x0fed  =>  @=0x0244)

        mov     #0xcba9, &DMEM_21C
        mov     #0x5555, &DMEM_300
        push      28(r4)           ;# PUSH (0xcba9  =>  @=0x0242)

        mov     #0x5000, r15


        # Addressing mode: EDE
        #------------------------
.set   EDE_21E,  DMEM_21E
.set   EDE_220,  DMEM_220

        mov   #DMEM_200, r4
        mov     #0x8765, &DMEM_21E
        mov     #0x5555, &DMEM_300
        push    EDE_21E+PMEM_LENGTH            ;# PUSH (0x8765  =>  @=0x0240)

        mov     #0x4321, &DMEM_220
        mov     #0x5555, &DMEM_300
        push    EDE_220+PMEM_LENGTH            ;# PUSH (0x4321  =>  @=0x023E)

        mov     #0x6000, r15


        # Addressing mode: &EDE
        #------------------------
.set   aEDE_222,  DMEM_222
.set   aEDE_224,  DMEM_224

        mov   #DMEM_200, r4
        mov     #0x1f2e, &DMEM_222
        mov     #0x5555, &DMEM_300
        push  &aEDE_222            ;# PUSH (0x1f2e  =>  @=0x023C)

        mov     #0x3d4c, &DMEM_224
        mov     #0x5555, &DMEM_300
        push  &aEDE_224            ;# PUSH (0x3d4c  =>  @=0x023A)

        mov     #0x7000, r15


        # Addressing mode: #N
        #------------------------

        mov     #0x5555, &DMEM_300
        push    #0x71c8            ;# PUSH (0x71c8  =>  @=0x0238)

        mov     #0x5555, &DMEM_300
        push    #0x178c            ;# PUSH (0x178c  =>  @=0x0236)

        mov     #0x7001, r15


        /* -------------- TEST INSTRUCTION IN BYTE MODE ------------------- */

        # Initialization
        #------------------------

        mov   #DMEM_252, r1        ;# Initialize stack pointer

        mov     #0x8000, r15


        # Addressing mode: Rn
        #------------------------

        mov     #0x1fe2, r4
        mov     #0x5555, &DMEM_300
        push.b        r4           ;# PUSH (r4=0xe2  =>  @=0x0250)

        mov     #0x3dc4, r6
        mov     #0x5555, &DMEM_300
        push.b        r6           ;# PUSH (r6=0xc4  =>  @=0x024E)

        mov     #0x9000, r15


        # Addressing mode: @Rn
        #------------------------

        mov   #DMEM_212, r4
        mov     #0x5ba6, &DMEM_212
        mov     #0x5555, &DMEM_300
        push.b      @r4           ;# PUSH (0xa6    =>  @=0x024C)

        mov   #DMEM_215, r6
        mov     #0x7988, &DMEM_214
        mov     #0x5555, &DMEM_300
        push.b      @r6           ;# PUSH (0x79    =>  @=0x024A)

        mov     #0xA000, r15


        # Addressing mode: @Rn+
        #------------------------

        mov   #DMEM_216, r4
        mov     #0x976a, &DMEM_216
        mov     #0x5555, &DMEM_300
        push.b     @r4+           ;# PUSH (0x6a  =>  @=0x0248)

        mov     #0x5555, &DMEM_300
        push.b     @r4+           ;# PUSH (0x97  =>  @=0x0246)

        mov     #0xB000, r15


        # Addressing mode: X(Rn)
        #------------------------

        mov   #DMEM_200, r4
        mov     #0xb54c, &DMEM_21A
        mov     #0x5555, &DMEM_300
        push.b    26(r4)           ;# PUSH (0x4c  =>  @=0x0244)

        mov     #0xc32d, &DMEM_21C
        mov     #0x5555, &DMEM_300
        push.b    29(r4)           ;# PUSH (0xc3  =>  @=0x0242)

        mov     #0xC000, r15


        # Addressing mode: EDE
        #------------------------
.set   EDE_B_21E,  DMEM_21E
.set   EDE_B_221,  DMEM_221

        mov   #DMEM_200, r4
        mov     #0xd10e, &DMEM_21E
        mov     #0x5555, &DMEM_300
        push.b  EDE_B_21E+PMEM_LENGTH          ;# PUSH (0x0e  =>  @=0x0240)

        mov     #0xfed0, &DMEM_220
        mov     #0x5555, &DMEM_300
        push.b  EDE_B_221+PMEM_LENGTH          ;# PUSH (0xfe  =>  @=0x023E)

        mov     #0xD000, r15


        # Addressing mode: &EDE
        #------------------------
.set   aEDE_B_222,  DMEM_222
.set   aEDE_B_225,  DMEM_225

        mov   #DMEM_200, r4
        mov     #0x1bc2, &DMEM_222
        mov     #0x5555, &DMEM_300
        push.b &aEDE_B_222         ;# PUSH (0xc2  =>  @=0x023C)
        
        mov     #0x3ba4, &DMEM_224
        mov     #0x5555, &DMEM_300
        push.b &aEDE_B_225         ;# PUSH (0x3b  =>  @=0x023A)

        mov     #0xE000, r15


        # Addressing mode: #N
        #------------------------

        mov     #0x5555, &DMEM_300
        push.b  #0x82d9            ;# PUSH (0xd9  =>  @=0x0238)

        mov     #0x5555, &DMEM_300
        push.b  #0x288d            ;# PUSH (0x8d  =>  @=0x0236)

        mov     #0xF000, r15

        /* -------------- TEST INSTRUCTION WITH SR AS ARGUMENT ------------------- */
 
        # Addressing mode: SR
        #------------------------

        nop
        push    r1                 ;# PUSH (r1=0x0234  =>  @=0x0234)
        push    r1                 ;# PUSH (r1=0x0232  =>  @=0x0232)
        nop

        mov     #0xF100, r15


        # Addressing mode: @SR
        #------------------------

        mov     #0x1234, &DMEM_22E
        mov     #0x5678, &DMEM_22C
        nop
        push    @r1                ;# PUSH (r1=0x0230  =>  @=0x0230) -> do nothing
        push    @r1                ;# PUSH (r1=0x022E  =>  @=0x022E) -> do nothing
        nop

        mov     #0xF200, r15


        # Addressing mode: @SR+
        #------------------------

        mov     #0x0000, &DMEM_22A
        mov     #0x0000, &DMEM_228
        nop
        push    @r1+               ;# PUSH (r1=0x022C  =>  @=0x022C) -> do nothing
        push    @r1+               ;# PUSH (r1=0x022C  =>  @=0x022C) -> do nothing
        nop

        mov     #0xF300, r15


        # Addressing mode: x(SR)
        #------------------------
                        
        nop
        push    12(r1)              ;# PUSH (r1=0x022C+12  =>  @=0x022C)
        push    12(r1)              ;# PUSH (r1=0x022A+12  =>  @=0x022A)
        nop
        
        mov     #0xF400, r15

        /* -------------- TEST POP INSTRUCTION WITH SR AS ARGUMENT ------------------- */
 
        # Addressing mode: x(SR)
        #------------------------

        nop
        pop     8(r1)              ;# POP (r1=0x022A  =>  @=0x022A+8)
        pop     8(r1)              ;# POP (r1=0x022C  =>  @=0x022C+8)
        nop

        mov     #0xF500, r15


        # Addressing mode: SR
        #------------------------

        nop
        pop     r1                 ;# POP (r1=@0x022E)
        nop

        mov     #0xF600, r15

                        
        /* ----------------------         END OF TEST        --------------- */
end_of_test:
        nop
        br #0xffff



        /* ----------------------         INTERRUPT VECTORS  --------------- */

.section .vectors, "a"
.word end_of_test  ; Interrupt  0 (lowest priority)    <unused>
.word end_of_test  ; Interrupt  1                      <unused>
.word end_of_test  ; Interrupt  2                      <unused>
.word end_of_test  ; Interrupt  3                      <unused>
.word end_of_test  ; Interrupt  4                      <unused>
.word end_of_test  ; Interrupt  5                      <unused>
.word end_of_test  ; Interrupt  6                      <unused>
.word end_of_test  ; Interrupt  7                      <unused>
.word end_of_test  ; Interrupt  8                      <unused>
.word end_of_test  ; Interrupt  9                      <unused>
.word end_of_test  ; Interrupt 10                      Watchdog timer
.word end_of_test  ; Interrupt 11                      <unused>
.word end_of_test  ; Interrupt 12                      <unused>
.word end_of_test  ; Interrupt 13                      <unused>
.word end_of_test  ; Interrupt 14                      NMI
.word main         ; Interrupt 15 (highest priority)   RESET