[sdcc-devel] [ sdcc-Bugs-1429722 ] invalid code generated for hc08

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Bugs item #1429722, was opened at 2006-02-11 15:03
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Category: hc08 port
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: kosmonaut_pirx (kosmonaut_pirx)
Assigned to: Nobody/Anonymous (nobody)
Summary: invalid code generated for hc08

Initial Comment:
sdcc generates code with incorrect adressing mode for          
the hc08 mcu.          
          
1. sample        
 void main( void )         
{	         
  char status;         
  char stage;         
         
  status = 0;         
  while( status != 1 ) {         
    stage = 0;         
    status = 0;         
    while( status == 0 ) {         
      /*          
	 do this and that ...         
	 and of course the following:          
      */         
      if(stage == 42) {         
	status = 1;         
	break;         
      }         
      stage++;         
    }         
  }         
}          
 
        
2. sdcc cmd        
sdcc -mhc08 -c bug.c        
        
 
3. sdcc -v       
SDCC : hc08 2.5.4 #1203 (Feb 11 2006) (UNIX) from       
today web snapshot page (src)      
also        
SDCC : pic16/hc08 0.0.0 #1185 (Dec 11 2005) (UNIX)       
SDCC : pic16/hc08 2.5.0 #1020 (Jun 30 2005) (UNIX)  
stable      
any sdcc version compiled from source with everything 
disabled but hc08 with  
--disable-mcs51-port --disable-gbz80-port 
--disable-z80-port --disable-avr-port 
--disable-ds390-port --disable-pic-port 
--disable-xa51-port --disable-ds400-port 
--disable-ucsim --disable-pic16-port 
 
       
4. error      
?ASxxxx-Error-<a> in line 119 of bug.asm      
              <a> machine specific addressing or      
addressing mode error      
     
asm listing:     
;bug.c:1: void main( void )     
;       -----------------------------------------     
;        function main     
;       -----------------------------------------     
_main:     
;bug.c:6: status = 0;     
        clra     
        sta     _main_status_1_1     
;bug.c:7: while( status != 1 ) {     
00106$:     
        lda     _main_status_1_1     
        cmp     #0x01     
; Peephole 2d   - eliminated jmp     
        beq     00109$     
00116$:     
;bug.c:9: status = 0;     
        clra     
        sta     _main_status_1_1     
;bug.c:10: while( status == 0 ) {     
        clr     *_main_sloc0_1_0     
00103$:     
        tst     #0x01 <- immediate mode not defined!     
; Peephole 2d   - eliminated jmp     
        beq     00106$     
00117$:     
;bug.c:15: if(stage == 42) {     
        lda     *_main_sloc0_1_0     
        cmp     #0x2A     
; Peephole 2c   - eliminated jmp     
        bne     00102$     
00118$:     
;bug.c:16: status = 1;     
        lda     #0x01     
        sta     _main_status_1_1     
;bug.c:17: break;     
; Peephole 3    - shortened jmp to bra     
        bra     00106$     
00102$:     
;bug.c:19: stage++;     
        inc     *_main_sloc0_1_0     
; Peephole 3    - shortened jmp to bra     
        bra     00103$     
00109$:     
        rts     
  
peep-hole optimization disabled only makes asm more  
readable, but has no effect on error.  
  
5. email   
joe...@gr...   
     
      

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