diff options
| author | Jason Wright <jason@cvs.openbsd.org> | 2002-05-10 15:25:40 +0000 |
|---|---|---|
| committer | Jason Wright <jason@cvs.openbsd.org> | 2002-05-10 15:25:40 +0000 |
| commit | acf44f2f60abcb3f705efded5a01c66feea95609 (patch) | |
| tree | 3839e76f2ad2cf43a66f123a09935ac1fcd0f76b /sys/dev/pci | |
| parent | 13645039eec0bf26f9aed9d52ff29bc118df7fb2 (diff) | |
- Add a set length insn for the result (length gets zotted by the shift right)
- Use length to determine how much to copy out, and bzero the rest
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/lofn.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/sys/dev/pci/lofn.c b/sys/dev/pci/lofn.c index 3d82e667e03..37f90f48122 100644 --- a/sys/dev/pci/lofn.c +++ b/sys/dev/pci/lofn.c @@ -1,4 +1,4 @@ -/* $OpenBSD: lofn.c,v 1.17 2002/05/09 21:43:17 jason Exp $ */ +/* $OpenBSD: lofn.c,v 1.18 2002/05/10 15:25:39 jason Exp $ */ /* * Copyright (c) 2001-2002 Jason L. Wright (jason@thought.net) @@ -437,7 +437,11 @@ lofn_modexp_start(sc, q) ip += 4; WRITE_REG(sc, LOFN_REL_INSTR + ip, - LOFN_INSTR2(OP_DONE, OP_CODE_SR, 3, 3, nshift)); + LOFN_INSTR2(0, OP_CODE_SR, 3, 3, nshift)); + ip += 4; + + WRITE_REG(sc, LOFN_REL_INSTR + ip, + LOFN_INSTR2(OP_DONE, OP_CODE_TAG, 3, 3, bits)); ip += 4; } @@ -463,10 +467,23 @@ lofn_modexp_finish(sc, q) struct lofn_q *q; { struct cryptkop *krp = q->q_krp; + int reglen, crplen; lofn_read_reg(sc, 3, &sc->sc_tmp); - bcopy(sc->sc_tmp.b, krp->krp_param[LOFN_MODEXP_PAR_C].crp_p, - (krp->krp_param[LOFN_MODEXP_PAR_C].crp_nbits + 7) / 8); + + reglen = ((READ_REG(sc, LOFN_LENADDR(LOFN_WIN_2, 3)) & LOFN_LENMASK) + + 7) / 8; + crplen = (krp->krp_param[LOFN_MODEXP_PAR_C].crp_nbits + 7) / 8; + + if (crplen <= reglen) + bcopy(sc->sc_tmp.b, krp->krp_param[LOFN_MODEXP_PAR_C].crp_p, + reglen); + else { + bcopy(sc->sc_tmp.b, krp->krp_param[LOFN_MODEXP_PAR_C].crp_p, + reglen); + bzero(krp->krp_param[LOFN_MODEXP_PAR_C].crp_p + reglen, + crplen - reglen); + } bzero(&sc->sc_tmp, sizeof(sc->sc_tmp)); lofn_zero_reg(sc, 0); lofn_zero_reg(sc, 1); |