* device/lib/pic16/Makefile.common.in,

[fw/sdcc] / device / lib / _gptrput.c

diff --git a/device/lib/_gptrput.c b/device/lib/_gptrput.c
index 3ae66a2d76bc1fd483831cf024d1a45111ce78ad..eced890cf43b08d5b13b03825386324827e845c9 100644 (file)
--- a/device/lib/_gptrput.c
+++ b/device/lib/_gptrput.c
@@ -1,6 +1,6 @@
 /*-------------------------------------------------------------------------
 
 /*-------------------------------------------------------------------------
 

-  _gptrput.c :- put value for a generic pointer               
+  _gptrput.c :- put value for a generic pointer

 
              Written By -  Sandeep Dutta . sandeep.dutta@usa.net (1999)
 
 
              Written By -  Sandeep Dutta . sandeep.dutta@usa.net (1999)
 


@@ -8,136 +8,365 @@
    under the terms of the GNU Library General Public License as published by the
    Free Software Foundation; either version 2, or (at your option) any
    later version.
    under the terms of the GNU Library General Public License as published by the
    Free Software Foundation; either version 2, or (at your option) any
    later version.

-   
+

    This library 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 Library General Public License for more details.
    This library 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 Library General Public License for more details.

-   
+

    You should have received a copy of the GNU Library General Public License
    along with this program; if not, write to the Free Software
    Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    You should have received a copy of the GNU Library General Public License
    along with this program; if not, write to the Free Software
    Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

-   
+

    In other words, you are welcome to use, share and improve this program.
    You are forbidden to forbid anyone else to use, share and improve
    In other words, you are welcome to use, share and improve this program.
    You are forbidden to forbid anyone else to use, share and improve

-   what you give them.   Help stamp out software-hoarding!  
+   what you give them.   Help stamp out software-hoarding!

 -------------------------------------------------------------------------*/
 
 -------------------------------------------------------------------------*/
 

-/* the  return value is expected to be in acc, and not in the standard
- * location dpl. Therefore we choose return type void here: */
+/* not all devices use P2 to page pdata memory, therefore __XPAGE was
+   introduced. On some targets __XPAGE itself is a paged SFR so it is
+   not safe for all platforms to set this. Furthermore some targets
+   can be configured to behave differently for movx @dptr vs. movx @Ri
+   (don't drive high byte of address bus for movx @Ri only) */
+#define USE_PDATA_PAGING_REGISTER 0
+
+__sbit __at (0xF7) B_7;
+__sbit __at (0xF6) B_6;
+__sbit __at (0xF5) B_5;
+
+#if defined DSDCC_MODEL_HUGE
+void
+_gptrput (char *gptr, char c) __naked
+{
+/* This is the banked version with pointers up to 22 bits.
+   B cannot be trashed */
+
+    gptr; c; /* hush the compiler */
+
+    __asm
+    ;
+    ;   depending on the pointer type according to SDCCsymt.h
+    ;
+        jb      _B_7,codeptr$        ; >0x80 code       ; 3
+        jnb     _B_6,xdataptr$       ; <0x40 far        ; 3
+
+        mov     dph,r0 ; save r0 independant of regbank ; 2
+        mov     r0,dpl ; use only low order address     ; 2
+
+        jb      _B_5,pdataptr$       ; >0x60 pdata      ; 3
+    ;
+    ;   store into near/idata space
+    ;
+        mov     @r0,a                                   ; 1
+ dataptrrestore$:
+        mov     r0,dph ; restore r0                     ; 2
+        mov     dph,#0 ; restore dph                    ; 2
+
+ codeptr$:
+        ret                                             ; 1
+    ;
+    ;   store into external stack/pdata space
+    ;
+ pdataptr$:
+        movx    @r0,a                                   ; 1
+        sjmp    dataptrrestore$                         ; 2
+    ;
+    ;   store into far space
+    ;
+ xdataptr$:
+        mov     _P3,b                                   ; 3
+
+        movx    @dptr,a                                 ; 1
+        ret                                             ; 1
+
+                                                        ;===
+                                                        ;27 bytes
+    __endasm;
+}
+
+#elif defined DSDCC_MODEL_MEDIUM
+
+void
+_gptrput (char *gptr, char c) __naked
+{
+/* This is the non-banked version with pointers up to 14 bits.
+   Assumes B is free to be used */
+
+    gptr; c; /* hush the compiler */
+
+    __asm
+    ;
+    ;   depending on the pointer type according to SDCCsymt.h
+    ;
+        mov     b,dph                                   ; 3
+        jb      _B_7,codeptr$        ; >0x80 code       ; 3
+        jnb     _B_6,xdataptr$       ; <0x40 far        ; 3
+
+        mov     b,r0   ; save r0 independant of regbank ; 2
+        mov     r0,dpl ; use only low order address     ; 2
+
+        jb      _B_5,pdataptr$       ; >0x60 pdata      ; 3
+    ;
+    ;   store into near/idata space
+    ;
+        mov     @r0,a                                   ; 1
+ dataptrrestore$:
+        mov     r0,b   ; restore r0                     ; 2
+
+ codeptr$:
+        ret                                             ; 1
+    ;
+    ;   store into external stack/pdata space
+    ;
+ pdataptr$:
+        movx    @r0,a                                   ; 1
+        sjmp    dataptrrestore$                         ; 2
+    ;
+    ;   store into far space, max 14 bits
+    ;
+ xdataptr$:
+    ; 0 <= dptr <= 0x3FFF
+        movx    @dptr,a                                 ; 1
+        ret                                             ; 1
+                                                        ;===
+                                                        ;25 bytes
+    __endasm;
+}
+
+#elif 1
+

 void
 void

-_gptrput (char *gptr, char c)
+_gptrput (char *gptr, char c) __naked

 {
 {

+/* This is the new version with pointers up to 16 bits.
+   B cannot be trashed */
+

     gptr; c; /* hush the compiler */
 
     gptr; c; /* hush the compiler */
 

-    _asm
-       push     acc
+    __asm
+    ;
+    ;   depending on the pointer type according to SDCCsymt.h
+    ;
+        jb      _B_7,codeptr$        ; >0x80 code       ; 3
+        jnb     _B_6,xdataptr$       ; <0x40 far        ; 3
+
+        mov     dph,r0 ; save r0 independant of regbank ; 2
+        mov     r0,dpl ; use only low order address     ; 2
+
+        jb      _B_5,pdataptr$       ; >0x60 pdata      ; 3
+    ;
+    ;   store into near/idata space
+    ;
+        mov     @r0,a                                   ; 1
+ dataptrrestore$:
+        mov     r0,dph ; restore r0                     ; 2
+        mov     dph,#0 ; restore dph                    ; 2
+
+ codeptr$:
+        ret                                             ; 1
+    ;
+    ;   store into external stack/pdata space
+    ;
+ pdataptr$:
+        movx    @r0,a                                   ; 1
+        sjmp    dataptrrestore$                         ; 2
+    ;
+    ;   store into far space
+    ;
+ xdataptr$:
+        movx    @dptr,a                                 ; 1
+        ret                                             ; 1
+
+                                                        ;===
+                                                        ;24 bytes
+    __endasm;
+}
+
+#else
+
+void
+_gptrput (char *gptr, char c) __naked
+{
+/* This is the old version with pointers up to 16 bits. */
+
+    gptr; c; /* hush the compiler */
+
+    __asm
+        ar0 = 0x00
+        push     acc                                    ; 2

     ;
     ;   depending on the pointer type acc. to SDCCsymt.h
     ;
     ;
     ;   depending on the pointer type acc. to SDCCsymt.h
     ;

-        mov     a,b
-       jz      00001$  ; 0 near
-        dec     a
-        jz      00002$ ; 1 far
-        dec     a
-        jz      00003$ ; 2 code
-        dec     a
-        jz      00004$
-       dec     a       ; 4 skip generic pointer
-       dec     a
-       jz      00001$  ; 5 idata
-       pop     acc
-       sjmp    00006$
+        mov     a,b                                     ; 2
+        jz      00001$  ; 0 near                        ; 2
+        dec     a                                       ; 1
+        jz      00002$  ; 1 far                         ; 2
+        dec     a                                       ; 1
+        jz      00003$  ; 2 code                        ; 2
+        dec     a                                       ; 1
+        jz      00004$  ; 3 pdata                       ; 2
+        dec     a       ; 4 skip generic pointer        ; 1
+        dec     a                                       ; 1
+        jz      00001$  ; 5 idata                       ; 2
+
+ 00003$:
+        pop     acc    ; do nothing                     ; 2
+        ret                                             ; 1

 ;
 ;       store into near space
 ;
  00001$:
 ;
 ;       store into near space
 ;
  00001$:

-       pop     acc
-       push    ar0
-       mov     r0,dpl
-       mov     @r0,a
-       sjmp    00005$
+        pop     acc                                     ; 2
+        push    ar0                                     ; 2
+        mov     r0,dpl                                  ; 2
+        mov     @r0,a                                   ; 1
+        pop     ar0                                     ; 2
+        ret                                             ; 1

 
  00002$:
 
  00002$:

-       pop     acc
-       movx    @dptr,a
-       sjmp    00006$
-
- 00003$:
-       pop     acc    ; do nothing
-       sjmp    00006$
+        pop     acc                                     ; 2
+        movx    @dptr,a                                 ; 1
+        ret                                             ; 1

 
  00004$:
 
  00004$:

-       pop     acc
-       push    ar0
-       mov     r0,dpl
-       movx    @r0,a
- 00005$:
-       pop     ar0
- 00006$:
-_endasm;
+#if USE_PDATA_PAGING_REGISTER
+        pop     acc
+        mov     dph,__XPAGE     ; __XPAGE (usually p2) holds high byte for pdata access
+        movx    @dptr,a
+#else
+        pop     acc                                     ; 2
+        push    ar0                                     ; 2
+        mov     r0,dpl                                  ; 2
+        movx    @r0,a                                   ; 1
+        pop     ar0                                     ; 2
+#endif
+        ret                                             ; 1
+                                                        ;===
+                                                        ;46 bytes
+    __endasm;

 }
 }

+#endif

 
 #ifdef SDCC_ds390
 
 #ifdef SDCC_ds390

+
+#if 1
+

 void
 _gptrputWord ()
 {
 void
 _gptrputWord ()
 {

-    _asm
-       push     acc
+    __asm
+    ;
+    ;   depending on the pointer type acc. to SDCCsymt.h
+    ;
+        jb      _B_7,00013$           ; >0x80 code
+        jnb     _B_6,00012$           ; <0x40 far
+
+        mov     dph,r0 ; save r0 independant of regbank
+        mov     r0,dpl ; use only low order address
+
+        jb      _B_5,00014$           ; >0x60 pdata
+;
+;       store into near space
+;
+        mov     @r0,_ap
+        inc     r0
+        mov     @r0,a
+        sjmp    00015$
+;
+;       store into far space
+;
+ 00012$:
+        xch     a,_ap
+        movx    @dptr,a
+        inc     dptr
+        xch     a,_ap
+        movx    @dptr,a
+        sjmp    00016$
+;
+;       store into code space
+;
+ 00013$:
+        inc     dptr   ; do nothing
+        sjmp    00016$
+;
+;       store into xstack space
+;
+ 00014$:
+        xch     a,_ap
+        movx    @r0,a
+        inc     r0
+        xch     a,_ap
+        movx    @r0, a
+ 00015$:
+        mov     dpl,r0
+        mov     r0,dph ; restore r0
+        mov     dph,#0 ; restore dph
+ 00016$:
+    __endasm;
+}
+
+#else
+
+void
+_gptrputWord ()
+{
+    __asm
+        push     acc

     ;
     ;   depending on the pointer type acc. to SDCCsymt.h
     ;
         mov     a,b
     ;
     ;   depending on the pointer type acc. to SDCCsymt.h
     ;
         mov     a,b

-       jz      00011$  ; 0 near
+        jz      00011$  ; 0 near

         dec     a
         dec     a

-        jz      00012$ ; 1 far
+        jz      00012$  ; 1 far

         dec     a
         dec     a

-        jz      00013$ ; 2 code
+        jz      00013$  ; 2 code

         dec     a
         dec     a

-        jz      00014$
-       dec     a       ; 4 skip generic pointer
-       dec     a
-       jz      00011$  ; 5 idata
-       pop     acc
-       sjmp    00016$
+        jz      00014$  ; 3 pdata
+        dec     a       ; 4 skip generic pointer
+        dec     a
+        jz      00011$  ; 5 idata
+        pop     acc
+        sjmp    00016$

 ;
 ;       store into near space
 ;
  00011$:
 ;
 ;       store into near space
 ;
  00011$:

-       pop     acc
-       push    ar0
-       mov     r0,dpl
-       mov     @r0,_ap
-       inc     r0
-       mov     @r0,a
-       sjmp    00015$
+        pop     acc
+        push    ar0
+        mov     r0,dpl
+        mov     @r0,_ap
+        inc     r0
+        mov     @r0,a
+        sjmp    00015$

 
  00012$:
 
  00012$:

-       mov     a, _ap
-       movx    @dptr,a
-       inc     dptr
-       pop     acc
+        mov     a, _ap
+        movx    @dptr,a
+        inc     dptr
+        pop     acc

         movx    @dptr,a
         movx    @dptr,a

-       sjmp    00016$
+        sjmp    00016$

 
  00013$:
 
  00013$:

-       pop     acc    ; do nothing
-       sjmp    00016$
+        pop     acc    ; do nothing
+        sjmp    00016$

 
  00014$:
 
  00014$:

-       pop     acc
-       push    ar0
-       mov     r0,dpl
-       xch     a,_ap
-       movx    @r0,a
-       inc     r0
-       xch     a,_ap
-       movx    @r0, a
- 00015$:       
-        inc    dptr
-       pop     ar0
- 00016$:       
-    _endasm;
+        pop     acc
+        push    ar0
+        mov     r0,dpl
+        xch     a,_ap
+        movx    @r0,a
+        inc     r0
+        xch     a,_ap
+        movx    @r0, a
+ 00015$:
+        inc     dptr
+        pop     ar0
+ 00016$:
+    __endasm;

 }
 }

+#endif

 
 #endif
 
 #endif