diff options
Diffstat (limited to 'newlib/libc/machine/w65/smulhi3.s')
| -rw-r--r-- | newlib/libc/machine/w65/smulhi3.s | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/newlib/libc/machine/w65/smulhi3.s b/newlib/libc/machine/w65/smulhi3.s new file mode 100644 index 00000000000..6ccbfba013e --- /dev/null +++ b/newlib/libc/machine/w65/smulhi3.s @@ -0,0 +1,20 @@ + .global ___smulhi3 +___smulhi3: + + + + lda #0 +mult1: ldx <r4 + beq done + lsr <r4 + bcc mult2 + clc + adc <r5 + +mult2: asl <r5 + bra mult1 + +done: sta <r0 + rtl + + |