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telnet: code shrink

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put_iac2(w,c) is mostly used with constants, fold them into one arg

function                                             old     new   delta
put_iac2_merged                                        -      46     +46
telnet_main                                         1603    1583     -20
con_escape                                           285     257     -28
put_iac2                                              50       -     -50
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/2 up/down: 46/-98)            Total: -52 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-10-12 20:42:58 +02:00
parent 26d88d6bbd
commit 57727d478d
1 changed files with 4 additions and 3 deletions
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7
networking/telnet.c
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@ -311,15 +311,16 @@ static void put_iac(int c)
G.iacbuf[G.iaclen++] = c;
}
static void put_iac2(byte wwdd, byte c)
static void put_iac2_merged(unsigned wwdd_and_c)
{
if (G.iaclen + 3 > IACBUFSIZE)
iac_flush();
put_iac(IAC);
put_iac(wwdd);
put_iac(c);
put_iac(wwdd_and_c >> 8);
put_iac(wwdd_and_c & 0xff);
}
#define put_iac2(wwdd,c) put_iac2_merged(((wwdd)<<8) + (c))
#if ENABLE_FEATURE_TELNET_TTYPE
static void put_iac_subopt(byte c, char *str)