/* Signed and unsigned multiplication are the same - as long as the output
has the same precision as the input.
- To do: _muluint and _mulsint should be replaced by _mulint.
-
- bernhard@bernhardheld.de
-
Assembler-functions are provided for:
ds390
mcs51 small
# endif
#endif
-#ifdef _MULINT_ASM_LARGE
+#if defined(_MULINT_ASM_LARGE)
-#pragma SAVE
-#pragma LESS_PEDANTIC
-unsigned int
-_muluint (unsigned int a, unsigned int b) // in future: _mulint
+#pragma save
+#pragma less_pedantic
+int
+_mulint (int a, int b)
{
a*b; // hush the compiler
#if defined(SDCC_PARMS_IN_BANK1)
mov a,b1_0
#else
- mov dptr,#__muluint_PARM_2
+ mov dptr,#__mulint_PARM_2
movx a,@dptr ; lsb_b
#endif
mul ab ; lsb_a*lsb_b
ret
_endasm;
}
-#pragma RESTORE
-
-int
-_mulsint (int a, int b) // obsolete
-{
- return _muluint (a, b);
-}
+#pragma restore
-#elif defined _MULINT_ASM_SMALL || defined _MULINT_ASM_SMALL_AUTO
+#elif defined(_MULINT_ASM_SMALL) || defined(_MULINT_ASM_SMALL_AUTO)
-/* the return value is (unsigned) int, but to hush the compiler
- * we choose void here: */
-void
+#pragma save
+#pragma less_pedantic
+int
_mulint_dummy (void) _naked
{
_asm
__mulint:
- __muluint: ; obsolete
- __mulsint: ; obsolete
.globl __mulint
- .globl __muluint ; obsolete
- .globl __mulsint ; obsolete
#if !defined(SDCC_STACK_AUTO) || defined(SDCC_PARMS_IN_BANK1)
.area OSEG (OVR,DATA)
#endif
#if defined(SDCC_PARMS_IN_BANK1)
- #define bl (b1_0)
- #define bh (b1_1)
+ #define bl (b1_0)
+ #define bh (b1_1)
#else
- #define bl (__mulint_PARM_2)
- #define bh (__mulint_PARM_2 + 1)
+ #define bl (__mulint_PARM_2)
+ #define bh (__mulint_PARM_2 + 1)
__mulint_PARM_2:
- __muluint_PARM_2: ; obsolete
- __mulsint_PARM_2: ; obsolete
.globl __mulint_PARM_2
- .globl __muluint_PARM_2 ; obsolete
- .globl __mulsint_PARM_2 ; obsolete
.ds 2
-#endif
+#endif
.area CSEG (CODE)
_endasm ;
}
+#pragma restore
#else
unsigned int t;
} ;
-unsigned int
-_muluint (unsigned int a, unsigned int b) // in future: _mulint
+int
+_mulint (int a, int b)
{
#if !defined(SDCC_STACK_AUTO) && (defined(SDCC_MODEL_LARGE) || defined(SDCC_ds390)) // still needed for large
union uu xdata *x;
return t.t;
}
-int
-_mulsint (int a, int b) // obsolete
-{
- return _muluint (a, b);
-}
-
#endif
#undef _MULINT_ASM