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Diffstat (limited to 'gcc/config/sparc/lb1spl.asm')
| -rw-r--r-- | gcc/config/sparc/lb1spl.asm | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/gcc/config/sparc/lb1spl.asm b/gcc/config/sparc/lb1spl.asm new file mode 100644 index 000000000..973401f80 --- /dev/null +++ b/gcc/config/sparc/lb1spl.asm @@ -0,0 +1,246 @@ +/* This is an assembly language implementation of mulsi3, divsi3, and modsi3 + for the sparclite processor. + + These routines are all from the SPARClite User's Guide, slightly edited + to match the desired calling convention, and also to optimize them. */ + +#ifdef L_udivsi3 +.text + .align 4 + .global .udiv + .proc 04 +.udiv: + wr %g0,%g0,%y ! Not a delayed write for sparclite + tst %g0 + divscc %o0,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + retl + divscc %g1,%o1,%o0 +#endif + +#ifdef L_umodsi3 +.text + .align 4 + .global .urem + .proc 04 +.urem: + wr %g0,%g0,%y ! Not a delayed write for sparclite + tst %g0 + divscc %o0,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + divscc %g1,%o1,%g1 + bl 1f + rd %y,%o0 + retl + nop +1: retl + add %o0,%o1,%o0 +#endif + +#ifdef L_divsi3 +.text + .align 4 + .global .div + .proc 04 +! ??? This routine could be made faster if was optimized, and if it was +! rewritten to only calculate the quotient. +.div: + wr %g0,%g0,%y ! Not a delayed write for sparclite + mov %o1,%o4 + tst %o1 + bl,a 1f + sub %g0,%o4,%o4 +1: tst %o0 + bl,a 2f + mov -1,%y +2: divscc %o0,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + be 6f + mov %y,%o3 + bg 4f + addcc %o3,%o4,%g0 + be,a 6f + mov %g0,%o3 + tst %o0 + bl 5f + tst %g1 + ba 5f + add %o3,%o4,%o3 +4: subcc %o3,%o4,%g0 + be,a 6f + mov %g0,%o3 + tst %o0 + bge 5f + tst %g1 + sub %o3,%o4,%o3 +5: bl,a 6f + add %g1,1,%g1 +6: tst %o1 + bl,a 7f + sub %g0,%g1,%g1 +7: retl + mov %g1,%o0 ! Quotient is in %g1. +#endif + +#ifdef L_modsi3 +.text + .align 4 + .global .rem + .proc 04 +! ??? This routine could be made faster if was optimized, and if it was +! rewritten to only calculate the remainder. +.rem: + wr %g0,%g0,%y ! Not a delayed write for sparclite + mov %o1,%o4 + tst %o1 + bl,a 1f + sub %g0,%o4,%o4 +1: tst %o0 + bl,a 2f + mov -1,%y +2: divscc %o0,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + divscc %g1,%o4,%g1 + be 6f + mov %y,%o3 + bg 4f + addcc %o3,%o4,%g0 + be,a 6f + mov %g0,%o3 + tst %o0 + bl 5f + tst %g1 + ba 5f + add %o3,%o4,%o3 +4: subcc %o3,%o4,%g0 + be,a 6f + mov %g0,%o3 + tst %o0 + bge 5f + tst %g1 + sub %o3,%o4,%o3 +5: bl,a 6f + add %g1,1,%g1 +6: tst %o1 + bl,a 7f + sub %g0,%g1,%g1 +7: retl + mov %o3,%o0 ! Remainder is in %o3. +#endif |