diff options
Diffstat (limited to 'os/mpc/inb.s')
| -rw-r--r-- | os/mpc/inb.s | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/os/mpc/inb.s b/os/mpc/inb.s new file mode 100644 index 00000000..4dcd7fe4 --- /dev/null +++ b/os/mpc/inb.s @@ -0,0 +1,120 @@ +#include "mem.h" + +#define BDNZ BC 16,0, + +TEXT inb(SB), $0 + OR $ISAIO, R3 + EIEIO + MOVBZ (R3), R3 + RETURN + +TEXT insb(SB), $0 + MOVW v+4(FP), R4 + MOVW n+8(FP), R5 + MOVW R5, CTR + OR $ISAIO, R3 + SUB $1, R4 +insb1: + EIEIO + MOVBZ (R3), R7 + MOVBU R7, 1(R4) + BDNZ insb1 + RETURN + +TEXT outb(SB), $0 + MOVW v+4(FP), R4 + OR $ISAIO, R3 + EIEIO + MOVB R4, (R3) + RETURN + +TEXT outsb(SB), $0 + MOVW v+4(FP), R4 + MOVW n+8(FP), R5 + MOVW R5, CTR + OR $ISAIO, R3 + SUB $1, R4 +outsb1: + EIEIO + MOVBZU 1(R4), R7 + MOVB R7, (R3) + BDNZ outsb1 + RETURN + +TEXT ins(SB), $0 + OR $ISAIO, R3 + EIEIO + MOVHBR (R3), R3 + RETURN + +TEXT inss(SB), $0 + MOVW v+4(FP), R4 + MOVW n+8(FP), R5 + MOVW R5, CTR + OR $ISAIO, R3 + SUB $2, R4 +inss1: + EIEIO + MOVHZ (R3), R7 + MOVHU R7, 2(R4) + BDNZ inss1 + RETURN + +TEXT outs(SB), $0 + MOVW v+4(FP), R4 + OR $ISAIO, R3 + EIEIO + MOVHBR R4, (R3) + RETURN + +TEXT outss(SB), $0 + MOVW v+4(FP), R4 + MOVW n+8(FP), R5 + MOVW R5, CTR + OR $ISAIO, R3 + SUB $2, R4 +outss1: + EIEIO + MOVHZU 2(R4), R7 + MOVH R7, (R3) + BDNZ outss1 + RETURN + +TEXT inl(SB), $0 + OR $ISAIO, R3 + EIEIO + MOVWBR (R3), R3 + RETURN + +TEXT insl(SB), $0 + MOVW v+4(FP), R4 + MOVW n+8(FP), R5 + MOVW R5, CTR + OR $ISAIO, R3 + SUB $4, R4 +insl1: + EIEIO + MOVW (R3), R7 + MOVWU R7, 4(R4) + BDNZ insl1 + RETURN + +TEXT outl(SB), $0 + MOVW v+4(FP), R4 + OR $ISAIO, R3 + EIEIO + MOVWBR R4, (R3) + RETURN + +TEXT outsl(SB), $0 + MOVW v+4(FP), R4 + MOVW n+8(FP), R5 + MOVW R5, CTR + OR $ISAIO, R3 + SUB $4, R4 +outsl1: + EIEIO + MOVWU 4(R4), R7 + MOVW R7, (R3) + BDNZ outsl1 + RETURN |