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

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This commit is contained in:
Joe Bryan 2020-10-16 16:50:29 -07:00
parent 7c393a1d71
commit 6c6b2db0d8
1 changed files with 31 additions and 5 deletions
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36
pkg/urbit/vere/io/ames.c
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@ -179,6 +179,35 @@ _ames_etch_head(u3_head* hed_u, c3_y buf_y[4])
buf_y[3] = (hed_w >> 24) & 0xff;
}
/* _ames_chub_bytes(): c3_y[8] to c3_d
** XX move
*/
static inline c3_d
_ames_chub_bytes(c3_y byt_y[8])
{
return (c3_d)byt_y[0]
| (c3_d)byt_y[1] << 8
| (c3_d)byt_y[2] << 16
| (c3_d)byt_y[3] << 24
| (c3_d)byt_y[4] << 32
| (c3_d)byt_y[5] << 40
| (c3_d)byt_y[6] << 48
| (c3_d)byt_y[7] << 56;
}
/* _ames_ship_to_chubs(): pack [len_y] bytes into c3_d[2]
** XX move
*/
static inline void
_ames_ship_to_chubs(c3_d sip_d[2], c3_y len_y, c3_y* buf_y)
{
c3_y sip_y[16] = {0};
memcpy(sip_y, buf_y, c3_min(16, len_y));
sip_d[0] = _ames_chub_bytes(sip_y);
sip_d[1] = _ames_chub_bytes(sip_y + 8);
}
/* _ames_send_cb(): send callback.
*/
static void
@ -839,11 +868,8 @@ _ames_recv_cb(uv_udp_t* wax_u,
c3_y* con_y = NULL;
if ( c3y == pas_o ) {
u3_noun sen = u3i_bytes(sen_y, bod_y);
u3_noun rec = u3i_bytes(rec_y, bod_y + sen_y);
u3r_chubs(0, 2, rec_d, rec);
u3r_chubs(0, 2, sen_d, sen);
u3z(sen); u3z(rec);
_ames_ship_to_chubs(sen_d, sen_y, bod_y);
_ames_ship_to_chubs(rec_d, rec_y, bod_y + sen_y);
con_y = c3_malloc(con_w);
memcpy(con_y, bod_y + sen_y + rec_y, con_w);