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vere: factors out ames' ship chubs-array to byte-array conversion

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This commit is contained in:
Joe Bryan 2020-10-16 16:52:16 -07:00
parent 6c6b2db0d8
commit 9b1b303417
1 changed files with 34 additions and 7 deletions
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41
pkg/urbit/vere/io/ames.c
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@ -208,6 +208,36 @@ _ames_ship_to_chubs(c3_d sip_d[2], c3_y len_y, c3_y* buf_y)
sip_d[1] = _ames_chub_bytes(sip_y + 8);
}
/* _ames_chub_bytes(): c3_d to c3_y[8]
** XX move
*/
static inline void
_ames_bytes_chub(c3_y byt_y[8], c3_d num_d)
{
byt_y[0] = num_d & 0xff;
byt_y[1] = (num_d >> 8) & 0xff;
byt_y[2] = (num_d >> 16) & 0xff;
byt_y[3] = (num_d >> 24) & 0xff;
byt_y[4] = (num_d >> 32) & 0xff;
byt_y[5] = (num_d >> 40) & 0xff;
byt_y[6] = (num_d >> 48) & 0xff;
byt_y[7] = (num_d >> 56) & 0xff;
}
/* _ames_ship_of_chubs(): unpack c3_d[2] into [len_y] bytes.
** XX move
*/
static inline void
_ames_ship_of_chubs(c3_d sip_d[2], c3_y len_y, c3_y* buf_y)
{
c3_y sip_y[16] = {0};
_ames_bytes_chub(sip_y, sip_d[0]);
_ames_bytes_chub(sip_y + 8, sip_d[1]);
memcpy(buf_y, sip_y, c3_min(16, len_y));
}
/* _ames_send_cb(): send callback.
*/
static void
@ -489,13 +519,10 @@ _ames_serialize_packet(u3_panc* pac_u, c3_o dop_o)
//
u3_body* bod_u = &pac_u->bod_u;
c3_y* pac_y = c3_malloc(4 + sen_y + rec_y + bod_u->con_w);
{
u3_atom sen = u3i_chubs(2, bod_u->sen_d);
u3_atom rec = u3i_chubs(2, bod_u->rec_d);
u3r_bytes(0, sen_y, pac_y + 4, sen);
u3r_bytes(0, rec_y, pac_y + 4 + sen_y, rec);
u3z(sen); u3z(rec);
}
_ames_ship_of_chubs(bod_u->sen_d, sen_y, pac_y + 4);
_ames_ship_of_chubs(bod_u->rec_d, rec_y, pac_y + 4 + sen_y);
memcpy(pac_y + 4 + sen_y + rec_y, bod_u->con_y, bod_u->con_w);
// if we updated the origin lane, we need to update the mug too