(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
+_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
- ar0 = 0x00
- push acc
+ __asm
;
- ; depending on the pointer type acc. to SDCCsymt.h
+ ; depending on the pointer type according 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$ ; 3 pdata
- dec a ; 4 skip generic pointer
- dec a
- jz 00001$ ; 5 idata
-
- 00003$:
- pop acc ; do nothing
- ret
-;
-; store into near space
-;
- 00001$:
- pop acc
- push ar0
- mov r0,dpl
- mov @r0,a
- pop ar0
- ret
+ jb _B_7,codeptr$ ; >0x80 code ; 3
+ jnb _B_6,xdataptr$ ; <0x40 far ; 3
- 00002$:
- pop acc
- movx @dptr,a
- ret
+ mov dph,r0 ; save r0 independant of regbank ; 2
+ mov r0,dpl ; use only low order address ; 2
+
+ jb _B_5,pdataptr$ ; >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$:
+ ; 0 <= dptr <= 0x3FFF
+ movx @dptr,a ; 1
+ ret ; 1
+ ;===
+ ;25 bytes
+ __endasm;
+}
- 00004$:
-#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
- push ar0
- mov r0,dpl
- movx @r0,a
- pop ar0
-#endif
- ret
-_endasm;
+
+void
+_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 */
+
+ __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$:
+ movx @dptr,a ; 1
+ ret ; 1
+
+ ;===
+ ;24 bytes
+ __endasm;
}
+#endif
+
#ifdef SDCC_ds390
+
void
_gptrputWord ()
{
- _asm
- push acc
+ __asm
;
; depending on the pointer type acc. to SDCCsymt.h
;
- mov a,b
- jz 00011$ ; 0 near
- dec a
- jz 00012$ ; 1 far
- dec a
- jz 00013$ ; 2 code
- dec a
- jz 00014$ ; 3 pdata
- dec a ; 4 skip generic pointer
- dec a
- jz 00011$ ; 5 idata
- pop acc
- sjmp 00016$
+ 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
;
- 00011$:
- pop acc
- push ar0
- mov r0,dpl
mov @r0,_ap
inc r0
mov @r0,a
sjmp 00015$
-
+;
+; store into far space
+;
00012$:
- mov a, _ap
+ xch a,_ap
movx @dptr,a
inc dptr
- pop acc
+ xch a,_ap
movx @dptr,a
sjmp 00016$
-
+;
+; store into code space
+;
00013$:
- pop acc ; do nothing
+ inc dptr ; do nothing
sjmp 00016$
-
+;
+; store into xstack space
+;
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
+ mov dpl,r0
+ mov r0,dph ; restore r0
+ mov dph,#0 ; restore dph
00016$:
- _endasm;
+ __endasm;
}
#endif
projects / fw / sdcc / blobdiff