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Author SHA1 Message Date
Denys Vlasenko
447dc02c27 bc: fix comment 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-21 00:39:02 +01:00
Denys Vlasenko
52caa007e3 bc: for(;;) fix from upstream 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-21 00:35:22 +01:00
Denys Vlasenko
047154472a bc: shrink bc_program_add_fn() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-21 00:10:26 +01:00
Denys Vlasenko
44a99ca617 bc: "dc only" config does not need G.prog.fn_map 
function                                             old     new   delta
bc_program_add_fn                                      -      43     +43
bc_vm_init                                           655     675     +20
bc_program_addFunc                                   138     118     -20
zdc_parse_expr                                       658     635     -23
zdc_program_asciify                                  447     407     -40
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/3 up/down: 63/-83)            Total: -20 bytes
   text	   data	    bss	    dec	    hex	filename
 984739	    489	   7312	 992540	  f251c	busybox_old
 984712	    489	   7312	 992513	  f2501	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-20 20:34:09 +01:00
Denys Vlasenko
5acd14ba5b bc: fix keyword matching to not think "ifz" is the "if" keyword 
function                                             old     new   delta
zbc_lex_next                                        2224    2225      +1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-20 16:48:50 +01:00
Denys Vlasenko
503faf9d53 bc: shrink "dc only" code by dropping unused structure members 
function                                             old     new   delta
zbc_program_num                                      979     981      +2
zbc_program_pushArray                                147     145      -2
bc_program_pushVar                                   198     196      -2
bc_program_func                                       17      15      -2
dc_num_printChar                                      24      21      -3
bc_program_retire                                     35      32      -3
bc_program_binOpRetire                                46      43      -3
zdc_program_printStream                              153     148      -5
zbc_program_prep                                      91      86      -5
zbc_program_copyToVar                                300     295      -5
zdc_program_modexp                                   721     715      -6
zbc_program_binOpPrep                                311     305      -6
bc_program_addFunc                                   138     132      -6
bc_num_printNewline                                   51      45      -6
bc_num_printHex                                       67      61      -6
bc_num_printDigits                                   137     131      -6
zdc_program_assignStr                                146     137      -9
bc_program_reset                                      64      55      -9
bc_func_free                                          27       5     -22
bc_parse_free                                         38       8     -30
bc_parse_create                                       92      47     -45
bc_func_init                                          50       5     -45
dc_main                                              691     645     -46
zdc_program_execStr                                  496     442     -54
zbc_program_print                                    677     623     -54
zbc_vm_process                                       204     137     -67
zbc_program_exec                                    4132    4057     -75
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/26 up/down: 2/-522)          Total: -520 bytes
   text	   data	    bss	    dec	    hex	filename
 969767	    485	   7296	 977548	  eea8c	busybox_old
 969210	    485	   7296	 976991	  ee85f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-20 16:24:18 +01:00
Denys Vlasenko
eaa3b00002 bc: shorten bc_program_addFunc() 
function                                             old     new   delta
bc_func_init                                           -      50     +50
bc_program_addFunc                                   201     138     -63
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 50/-63)            Total: -13 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 20:05:50 +01:00
Denys Vlasenko
408b7d45f6 bc: fix "dc only" and "bc only" configs 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 19:43:03 +01:00
Denys Vlasenko
fa21079183 bc: rename dc-specific functions, simplify zdc_program_execStr() a bit 
function                                             old     new   delta
zbc_program_execStr                                  496       -    -496
zdc_program_execStr                                    -     491    +491

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 19:38:51 +01:00
Denys Vlasenko
44dbe675dd bc: rename zbc_parse_string->bc_parse_pushSTR, do not emit next opcode in it 
function                                             old     new   delta
bc_parse_pushSTR                                       -      73     +73
zbc_parse_stmt_possibly_auto                        1638    1640      +2
zbc_parse_string                                      89       -     -89
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/0 up/down: 75/-89)            Total: -14 bytes
   text	   data	    bss	    dec	    hex	filename
 981377	    485	   7296	 989158	  f17e6	busybox_old
 981363	    485	   7296	 989144	  f17d8	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 19:10:40 +01:00
Denys Vlasenko
ea5cad2a0d bc: avoid bc_vec_item() calls in bc_vm_run() 
function                                             old     new   delta
bc_vm_run                                            124     112     -12

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 18:09:31 +01:00
Denys Vlasenko
eac0de55d6 bc: avoid bc_vec_item() calls in bc_array_copy() 
function                                             old     new   delta
zbc_program_copyToVar                                311     300     -11

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 17:59:30 +01:00
Denys Vlasenko
87888ce4d8 bc: avoid successive bc_vec_item(&func->autos, i) 
function                                             old     new   delta
zbc_func_insert                                       97     100      +3
zbc_program_call                                     353     354      +1
zbc_program_exec                                    4085    4078      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 4/-7)               Total: -3 bytes
   text	   data	    bss	    dec	    hex	filename
 981403	    485	   7296	 989184	  f1800	busybox_old
 981400	    485	   7296	 989181	  f17fd	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 17:55:23 +01:00
Denys Vlasenko
f36a0adf8b bc: remove unnecessary union use 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 17:15:04 +01:00
Denys Vlasenko
dfe1dd2031 bc: "unsigned_n > 0" is shorter code than "unsigned_n >= 1" 
function                                             old     new   delta
zbc_program_print                                    680     677      -3
zbc_program_exec                                    4089    4085      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-7)               Total: -7 bytes
   text	   data	    bss	    dec	    hex	filename
 981404	    485	   7296	 989185	  f1801	busybox_old
 981397	    485	   7296	 989178	  f17fa	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 17:09:01 +01:00
Denys Vlasenko
65e1046abf bc: open-code bc_parse_updateFunc() macro 
This clearly shows one place which would need changing
for nested funcdefs to work.

function                                             old     new   delta
bc_parse_reset                                       106     110      +4
zbc_vm_process                                       586     585      -1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-1)                Total: 3 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 15:13:14 +01:00
Denys Vlasenko
684d441f5c bc: make bc_program_addFunc() return new idx, untangle &p->fidx interaction 
In:
       bc_program_addFunc(name, idx);
       p->func = bc_program_func(p->fidx);
in some cases p->fidx was updated by _first_ statement - because passed idx
was pointing at it. This was very obscure.

function                                             old     new   delta
zdc_parse_expr                                       653     658      +5
bc_program_addFunc                                   204     201      -3
zbc_vm_process                                       594     586      -8
bc_vm_init                                           663     655      -8
zbc_parse_name                                       482     472     -10
bc_parse_addFunc                                      25       -     -25
zbc_program_asciify                                  473     447     -26
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/5 up/down: 5/-80)             Total: -75 bytes
   text	   data	    bss	    dec	    hex	filename
 981482	    485	   7296	 989263	  f184f	busybox_old
 981401	    485	   7296	 989182	  f17fe	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 14:59:22 +01:00
Denys Vlasenko
085b420220 bc: "reload stack only after insts" change missed a few places 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 14:02:59 +01:00
Denys Vlasenko
5aa54830bf bc: rename a few functions 
function                                             old     new   delta
bc_map_find_ge                                         -      71     +71
bc_map_find_exact                                      -      50     +50
bc_map_index                                          50       -     -50
bc_map_find                                           71       -     -71
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 0/0 up/down: 121/-121)            Total: 0 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 13:55:53 +01:00
Denys Vlasenko
e3d3d2067d bc: remove redundant strdup+free in zbc_parse_call() 
function                                             old     new   delta
zbc_parse_name                                       527     482     -45
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-45)             Total: -45 bytes
   text	   data	    bss	    dec	    hex	filename
 981541	    485	   7296	 989322	  f188a	busybox_old
 981486	    485	   7296	 989267	  f1853	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 13:20:02 +01:00
Denys Vlasenko
4796a1d537 bc: delete G.prog.strmb for real 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 12:48:16 +01:00
Denys Vlasenko
b80d7aad1b bc: in execution loop, reload stack only after insts which can change it 
Only these functions affect G.prog.exestack:
zbc_program_read
zbc_program_call
zbc_program_return
zbc_program_nquit
zbc_program_execStr

function                                             old     new   delta
zbc_program_exec                                    3995    4093     +98
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 98/0)               Total: 98 bytes
   text	   data	    bss	    dec	    hex	filename
 981364	    485	   7296	 989145	  f17d9	busybox_old
 981462	    485	   7296	 989243	  f183b	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-19 12:35:27 +01:00
Denys Vlasenko
d6e24bd795 bc: simplify bc_array_expand() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 20:10:48 +01:00
Denys Vlasenko
30a8e0c2f9 bc: code shrink 
function                                             old     new   delta
zbc_program_print                                    684     680      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-4)               Total: -4 bytes
   text	   data	    bss	    dec	    hex	filename
 981368	    485	   7296	 989149	  f17dd	busybox_old
 981364	    485	   7296	 989145	  f17d9	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 19:20:04 +01:00
Denys Vlasenko
694d2982e5 bc: code shrink 
function                                             old     new   delta
bc_program_name                                       67      63      -4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-4)               Total: -4 bytes
   text	   data	    bss	    dec	    hex	filename
 981372	    485	   7296	 989153	  f17e1	busybox_old
 981368	    485	   7296	 989149	  f17dd	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 19:17:11 +01:00
Denys Vlasenko
7b30bc0222 bc: shrink bc_program_pushVar() 
function                                             old     new   delta
bc_program_pushVar                                   203     198      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 17:14:34 +01:00
Denys Vlasenko
d340143247 bc: get rid of G.prog.ob, G.prog.strmb 
function                                             old     new   delta
zbc_num_printNum                                     489     540     +51
zbc_program_asciify                                  426     473     +47
zbc_program_print                                    686     684      -2
zbc_program_exec                                    4008    3995     -13
zbc_program_assign                                   474     440     -34
bc_vm_init                                           739     663     -76
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/4 up/down: 98/-125)           Total: -27 bytes
   text	   data	    bss	    dec	    hex	filename
 981404	    485	   7296	 989185	  f1801	busybox_old
 981377	    485	   7296	 989158	  f17e6	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 17:00:35 +01:00
Denys Vlasenko
09fe0aaefa bc: do not show -i in --help, it's a NOP (for now) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 16:32:25 +01:00
Denys Vlasenko
7f2d59c38d bc: style edit, no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 16:24:07 +01:00
Denys Vlasenko
3f940c9c70 bc: shrink bc_program_index() 
function                                             old     new   delta
bc_program_index                                      66      47     -19
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-19)             Total: -19 bytes
   text	   data	    bss	    dec	    hex	filename
 981418	    485	   7296	 989199	  f180f	busybox_old
 981399	    485	   7296	 989180	  f17fc	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 15:49:42 +01:00
Denys Vlasenko
55f3cab7e9 bc: fix "echo -n '#foo' | bc" not eating last 'o' 
function                                             old     new   delta
zdc_parse_expr                                       656     653      -3
bc_lex_lineComment                                    39      36      -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-6)               Total: -6 bytes
   text	   data	    bss	    dec	    hex	filename
 981424	    485	   7296	 989205	  f1815	busybox_old
 981418	    485	   7296	 989199	  f180f	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 14:39:33 +01:00
Denys Vlasenko
a199cc95b7 bc: shrink zdc_parse_expr() 
function                                             old     new   delta
zdc_parse_expr                                       656     653      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 14:11:35 +01:00
Denys Vlasenko
07597cd35d bc: optimize zbc_lex_string() 
function                                             old     new   delta
zbc_lex_next                                        2359    2353      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 14:03:20 +01:00
Denys Vlasenko
ef271da33f bc: shrink zdc_lex_string() 
This actually fixes a rather obscure bug. This was failing to find
end of the string:

	$ echo -n '[foo]' | dc
	dc: string end could not be found

function                                             old     new   delta
zbc_lex_next                                        2230    2141     -89
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-89)             Total: -89 bytes
   text	   data	    bss	    dec	    hex	filename
 981461	    485	   7296	 989242	  f183a	busybox_old
 981372	    485	   7296	 989153	  f17e1	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 13:48:37 +01:00
Denys Vlasenko
d4258dd321 bc: another for() loop simplified 
function                                             old     new   delta
zbc_program_print                                    688     686      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 13:22:23 +01:00
Denys Vlasenko
5c0c5abba0 bc: simplify another for() loop 
function                                             old     new   delta
zbc_num_d                                            563     557      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 13:15:55 +01:00
Denys Vlasenko
6b0fbd14fc bc: rewrite more for() loops 
function                                             old     new   delta
bc_program_name                                       75      67      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 12:55:40 +01:00
Denys Vlasenko
71c82d1d8c bc: rewrite another for() loop 
function                                             old     new   delta
zbc_num_d                                            570     563      -7

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 12:43:21 +01:00
Denys Vlasenko
e2e6ffd3c5 bc: replace signed division / 10 by unsigned 
function                                             old     new   delta
zbc_num_a                                            443     441      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 12:23:16 +01:00
Denys Vlasenko
4113e1f2cd bc: rewrite bc_num_compare() to be readable 
function                                             old     new   delta
bc_num_compare                                        59      51      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 03:30:23 +01:00
Denys Vlasenko
57734c926b bc: fold zbc_num_stream() into its single caller 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 03:30:23 +01:00
Denys Vlasenko
f6e3f8511e bc: get rid of BcNum BcProgram::ib,hexb 
function                                             old     new   delta
zbc_program_num                                      907     943     +36
zbc_program_assign                                   485     474     -11
bc_vm_init                                           757     739     -18
bc_num_ten                                            30       -     -30
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/2 up/down: 36/-59)            Total: -23 bytes
   text	   data	    bss	    dec	    hex	filename
 981532	    485	   7296	 989313	  f1881	busybox_old
 981509	    485	   7296	 989290	  f186a	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 03:30:23 +01:00
Denys Vlasenko
0f31a5c79e bc: fixes to bugs found while testing 64-bit build 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 03:16:48 +01:00
Denys Vlasenko
f4f10720fe bc: fixed from 64-bit compile 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-18 02:23:53 +01:00
Denys Vlasenko
6d3b4bb24d udhcpc: check that 4-byte options are indeed 4-byte, closes 11506 
function                                             old     new   delta
udhcp_get_option32                                     -      27     +27
udhcp_get_option                                     231     248     +17
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/0 up/down: 44/0)               Total: 44 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-17 18:07:18 +01:00
Denys Vlasenko
4b72aebe80 bc: remove "error after expression parsing" check 
It is misplaced: caller knows better what can or cannot follow the expression.
Sometimes even caller's caller: "if (1) return a+b else..." -
parser of "return" does not know that "else" after it is valid,
parser of stmt does not know it either, - only parser of
"if" knows it!

The removed code balked on e.g. "{ print 1 }" statement.

This does not break any valid programs, but starts accepting some
invalid ones, e.g. "print 1 print 2" would work.

function                                             old     new   delta
zcommon_parse_expr                                    40      32      -8
zbc_parse_name                                       509     494     -15
zbc_parse_stmt_possibly_auto                        1678    1638     -40
bc_parse_expr_empty_ok                              2025    1977     -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-111)           Total: -111 bytes
   text	   data	    bss	    dec	    hex	filename
 981599	    485	   7296	 989380	  f18c4	busybox_old
 981488	    485	   7296	 989269	  f1855	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-17 17:00:29 +01:00
Denys Vlasenko
b44a7f1d66 bc: tighten up input NUL handling 
function                                             old     new   delta
static.dc_lex_tokens                                   -      90     +90
bc_error_bad_character                                17      31     +14
static.dc_lex_regs                                     -      13     +13
bc_read_line                                         406     410      +4
bc_program_index                                      64      66      +2
dc_lex_regs                                           13       -     -13
zdc_parse_expr                                       671     656     -15
zbc_lex_next                                        2318    2230     -88
dc_lex_tokens                                         91       -     -91
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 3/2 up/down: 123/-207)          Total: -84 bytes
   text	   data	    bss	    dec	    hex	filename
 981667	    485	   7296	 989448	  f1908	busybox_old
 981599	    485	   7296	 989380	  f18c4	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-17 11:58:20 +01:00
Denys Vlasenko
e42cc19b51 bc: simplify zdc_parse_string() 
function                                             old     new   delta
bc_program_index                                      64      66      +2
zdc_parse_expr                                       671     656     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-15)             Total: -13 bytes
   text	   data	    bss	    dec	    hex	filename
 981667	    485	   7296	 989448	  f1908	busybox_old
 981655	    485	   7296	 989436	  f18fc	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-17 11:02:26 +01:00
Denys Vlasenko
59d4ce935e bc: use common strings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-17 10:42:31 +01:00
Denys Vlasenko
ec60318f15 bc: tidy up "z-function" macro machinery 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-17 10:34:02 +01:00