Commit Graph

15913 Commits

Author SHA1 Message Date
Denys Vlasenko
c355c4a7d6 bc: code shrink in zbc_lex_number()
function                                             old     new   delta
zbc_lex_number                                       279     190     -89

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 17:36:21 +01:00
Denys Vlasenko
b402ff844c bc: make bc_program_pushVar "z-function"
function                                             old     new   delta
bc_program_pushVar                                   200     198      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 15:45:15 +01:00
Denys Vlasenko
2930123279 bc: improve "noninteractive" macro machinery so that even "return zero" code is not generated
Most affected functions shrink by 2 bytes on x86.

function                                             old     new   delta
zbc_program_num                                        -     880    +880
zbc_program_print                                      -     665    +665
zbc_num_printNum                                       -     447    +447
zbc_program_call                                       -     323    +323
zbc_program_copyToVar                                  -     287    +287
zbc_lex_number                                         -     279    +279
zbc_program_binOpPrep                                  -     269    +269
zbc_program_assignStr                                  -     142    +142
zbc_program_printStream                                -     141    +141
zbc_func_insert                                        -      93     +93
zbc_num_ulong                                          -      88     +88
zbc_program_prep                                       -      79     +79
zbc_num_shift                                          -      53     +53
bc_num_shift                                          54       -     -54
bc_program_prep                                       81       -     -81
bc_num_ulong                                          90       -     -90
bc_func_insert                                        95       -     -95
bc_program_printStream                               143       -    -143
bc_program_assignStr                                 144       -    -144
bc_program_binOpPrep                                 271       -    -271
bc_lex_number                                        281       -    -281
bc_program_copyToVar                                 289       -    -289
bc_program_call                                      325       -    -325
bc_num_printNum                                      471       -    -471
bc_program_print                                     667       -    -667
bc_program_num                                       880       -    -880
------------------------------------------------------------------------------
(add/remove: 13/13 grow/shrink: 0/0 up/down: 3746/-3791)      Total: -45 bytes
   text	   data	    bss	    dec	    hex	filename
 982779	    485	   7296	 990560	  f1d60	busybox_old
 982734	    485	   7296	 990515	  f1d33	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-11 15:29:32 +01:00
Denys Vlasenko
91cde95916 bc: it's not clear bc_vm_file() always exits on errors, remove ERRORS_ARE_FATAL
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 20:56:44 +01:00
Denys Vlasenko
628bf1bc63 bc: more ERRORS_ARE_FATAL annotations
function                                             old     new   delta
bc_program_exec                                     3920    3969     +49
bc_program_call                                      329     325      -4
bc_vm_run                                            622     616      -6
bc_program_modexp                                    677     668      -9
bc_program_assign                                    471     455     -16
bc_program_pushArray                                 113       -    -113
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/4 up/down: 49/-148)           Total: -99 bytes
   text	   data	    bss	    dec	    hex	filename
 982872	    485	   7296	 990653	  f1dbd	busybox_old
 982773	    485	   7296	 990554	  f1d5a	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 20:41:05 +01:00
Denys Vlasenko
88cfea6a81 bc: stop checking for name length in bc_lex_name()
Gigabyte-long names are not a practical concern.

function                                             old     new   delta
bc_lex_name                                           73      69      -4
bc_lex_token                                        1266    1259      -7
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-11)             Total: -11 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 20:26:04 +01:00
Denys Vlasenko
fa35e598ab bc: optimize non-interactive config: we know that many functions always succeed
function                                             old     new   delta
bc_program_assign                                    475     471      -4
bc_program_prep                                       87      81      -6
bc_parse_parse                                       423     417      -6
bc_num_p                                             440     434      -6
bc_program_printStream                               153     143     -10
bc_program_execStr                                   478     468     -10
bc_parse_auto                                        275     265     -10
bc_num_k                                             925     913     -12
bc_program_copyToVar                                 307     289     -18
bc_program_binOpPrep                                 289     271     -18
bc_num_printNum                                      489     471     -18
bc_num_m                                             287     269     -18
bc_program_pushArray                                 139     113     -26
bc_program_modexp                                    707     677     -30
bc_program_print                                     704     667     -37
bc_program_exec                                     4010    3920     -90
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/16 up/down: 0/-319)          Total: -319 bytes
   text	   data	    bss	    dec	    hex	filename
 983202	    485	   7296	 990983	  f1f07	busybox_old
 982883	    485	   7296	 990664	  f1dc8	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 20:17:24 +01:00
Denys Vlasenko
86e63cdeca bc: in non-interactive config, let compiler know that error funcs do not return
function                                             old     new   delta
bc_num_s                                             235     239      +4
bc_lex_next                                           92      91      -1
dc_parse_register                                     53      51      -2
dc_parse_parse                                        46      44      -2
bc_vm_run                                            624     622      -2
bc_program_assignStr                                 146     144      -2
bc_parse_else                                        135     133      -2
bc_parse_body                                        116     114      -2
bc_num_a                                             445     443      -2
bc_func_insert                                        97      95      -2
bc_program_pushVar                                   203     200      -3
bc_parse_text                                        133     130      -3
bc_error_bad_character                                17      14      -3
bc_error                                              14      11      -3
bc_program_printStream                               157     153      -4
bc_program_prep                                       91      87      -4
bc_program_copyToVar                                 311     307      -4
bc_num_ulong                                          95      90      -5
bc_num_p                                             445     440      -5
bc_program_print                                     711     704      -7
bc_parse_endBody                                     365     358      -7
bc_num_r                                             237     230      -7
bc_num_d                                             550     543      -7
dc_lex_token                                         682     674      -8
bc_program_pushArray                                 147     139      -8
bc_program_assign                                    485     475     -10
bc_program_read                                      333     322     -11
bc_lex_token                                        1278    1266     -12
bc_parse_stmt                                       1780    1767     -13
bc_program_modexp                                    723     707     -16
dc_parse_expr                                        762     744     -18
bc_program_execStr                                   496     478     -18
bc_program_call                                      347     329     -18
bc_vm_file                                           219     197     -22
bc_program_binOpPrep                                 311     289     -22
bc_parse_name                                        539     513     -26
bc_parse_parse                                       451     423     -28
bc_program_num                                       912     880     -32
bc_read_line                                         172     139     -33
bc_program_exec                                     4048    4010     -38
bc_parse_auto                                        313     275     -38
bc_parse_expr_empty_ok                              2095    2036     -59
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/41 up/down: 4/-509)          Total: -505 bytes
   text	   data	    bss	    dec	    hex	filename
 983707	    485	   7296	 991488	  f2100	busybox_old
 983202	    485	   7296	 990983	  f1f07	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 19:46:53 +01:00
Denys Vlasenko
3a4d5a73a8 tls: prepare for ECDH_anon ciphers
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 19:19:38 +01:00
Denys Vlasenko
c67ff8a1b0 tls: fix a potential (currently "disabled" by a macro) SHA1-related bug
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 18:49:29 +01:00
Denys Vlasenko
63bfe0e4c0 tls: if !ENABLE_FEATURE_TLS_SHA1, tls->MAC_size is always SHA256_OUTSIZE for AES-CBC
function                                             old     new   delta
tls_xread_record                                     634     636      +2
xwrite_encrypted                                     579     580      +1
tls_handshake                                       2095    2085     -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 3/-10)              Total: -7 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 16:43:53 +01:00
Denys Vlasenko
71fa5b0a4c tls: introduce FEATURE_TLS_SHA1 to make SHA1 code optional
When disabled:

function                                             old     new   delta
xwrite_encrypted                                     580     579      -1
prf_hmac_sha256                                      222     217      -5
hmac_begin                                           158     149      -9
static.ciphers                                        32      20     -12
tls_handshake                                       2115    2095     -20
hmac                                                  87      61     -26
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/6 up/down: 0/-73)             Total: -73 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 16:14:58 +01:00
Denys Vlasenko
dafbc2cdb8 bc: simplify bc_num_parseDecimal() further
function                                             old     new   delta
bc_program_num                                       925     912     -13

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 15:38:52 +01:00
Denys Vlasenko
5ba55f1f35 bc: make all function pointers FAST_FUNC, on i486 this saves ~400 bytes
function                                             old     new   delta
bc_num_rem                                            91      95      +4
bc_num_inv                                            53      56      +3
bc_num_d                                             569     572      +3
bc_num_printDigits                                   136     137      +1
bc_program_assign                                    486     485      -1
dc_lex_token                                         684     682      -2
bc_vec_pop                                            27      25      -2
bc_vec_npop                                           55      53      -2
bc_program_read                                      335     333      -2
bc_program_print                                     713     711      -2
bc_parse_parse                                       462     460      -2
bc_lex_token                                        1280    1278      -2
bc_num_printChar                                      27      24      -3
bc_num_binary                                        150     147      -3
dc_parse_parse                                        59      55      -4
bc_vm_run                                            630     626      -4
bc_num_printHex                                       71      67      -4
bc_num_divmod                                        155     150      -5
bc_vec_free                                           24      18      -6
bc_string_free                                        15       9      -6
bc_num_free                                           15       9      -6
bc_id_free                                            15       9      -6
bc_parse_free                                         53      46      -7
bc_program_scale                                       8       -      -8
bc_num_r                                             245     237      -8
bc_func_free                                          35      27      -8
bc_result_free                                        57      46     -11
bc_num_a                                             454     443     -11
bc_num_sub                                            77      65     -12
bc_num_add                                            77      65     -12
bc_program_modexp                                    736     723     -13
bc_num_s                                             252     239     -13
bc_num_mul                                            62      49     -13
bc_num_mod                                            62      49     -13
bc_num_div                                            62      49     -13
bc_num_pow                                            47      31     -16
bc_program_exec                                     4081    4059     -22
bc_num_printNum                                      514     489     -25
bc_num_p                                             478     445     -33
bc_program_len                                        34       -     -34
bc_program_num                                       963     925     -38
bc_num_k                                             988     944     -44
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 4/36 up/down: 11/-416)         Total: -405 bytes
   text	   data	    bss	    dec	    hex	filename
 984536	    485	   7296	 992317	  f243d	busybox_old
 984131	    485	   7296	 991912	  f22a8	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 15:37:14 +01:00
Denys Vlasenko
c665c183f1 bc: 0xffffffffffffffff may be larger than unsigned long
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 15:15:42 +01:00
Denys Vlasenko
8b4cf0dbb0 bc: optimize bc_vec_concat()
function                                             old     new   delta
bc_vec_concat                                         71      66      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 15:12:58 +01:00
Denys Vlasenko
a7f1a36540 bc: simplify bc_program_len()
function                                             old     new   delta
bc_program_len                                        42      34      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 12:57:01 +01:00
Denys Vlasenko
44d79d866d bc: simplify bc_program_print()
function                                             old     new   delta
bc_program_print                                     730     713     -17

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 12:33:40 +01:00
Denys Vlasenko
b696d9ec20 bc: simplify bc_num_ulong2num()
function                                             old     new   delta
bc_num_ulong2num                                      64      59      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 12:22:15 +01:00
Denys Vlasenko
9311e01803 bc: move str-to-num conversion functions to their only caller, bc_num_parse()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-10 11:54:59 +01:00
Denys Vlasenko
218ed1cf54 bc: further simplify string-to-number conversion code
function                                             old     new   delta
bc_program_index                                      66      64      -2
bc_program_num                                       983     963     -20
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-22)             Total: -22 bytes
   text	   data	    bss	    dec	    hex	filename
 985706	    477	   7296	 993479	  f28c7	busybox_old
 985684	    477	   7296	 993457	  f28b1	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 13:33:52 +01:00
Denys Vlasenko
4a024c7719 bc: simplify string-tonumber conversion code
function                                             old     new   delta
bc_program_num                                      1108     983    -125
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-125)           Total: -125 bytes
   text	   data	    bss	    dec	    hex	filename
 985831	    477	   7296	 993604	  f2944	busybox_old
 985706	    477	   7296	 993479	  f28c7	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 13:21:54 +01:00
Denys Vlasenko
3129f705fc bc: no need to "set to zero" BcNum after bc_num_init(), it already is
function                                             old     new   delta
bc_num_init                                           48      49      +1
bc_program_num                                      1115    1108      -7
bc_program_exec                                     4098    4081     -17
bc_vm_init                                           786     768     -18
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 1/-42)             Total: -41 bytes
   text	   data	    bss	    dec	    hex	filename
 985872	    477	   7296	 993645	  f296d	busybox_old
 985831	    477	   7296	 993604	  f2944	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 12:04:44 +01:00
Denys Vlasenko
e20e00de34 bc: add and use bc_num_init_DEF_SIZE()
function                                             old     new   delta
bc_num_init_DEF_SIZE                                   -      10     +10
bc_num_binary                                        150     148      -2
bc_program_pushVar                                   208     203      -5
bc_program_modexp                                    741     736      -5
bc_program_copyToVar                                 316     311      -5
bc_program_call                                      352     347      -5
bc_array_expand                                       88      83      -5
bc_program_num                                      1125    1115     -10
bc_vm_init                                           821     786     -35
bc_program_exec                                     4152    4098     -54
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/9 up/down: 10/-126)          Total: -116 bytes
   text	   data	    bss	    dec	    hex	filename
 985988	    477	   7296	 993761	  f29e1	busybox_old
 985872	    477	   7296	 993645	  f296d	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 11:44:20 +01:00
Denys Vlasenko
5ec4b49125 bc: in bc_program_execStr(), push two variables into inner scope
function                                             old     new   delta
bc_program_execStr                                   502     496      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 02:54:06 +01:00
Denys Vlasenko
927a7d6853 bc: in bc_program_exec(), push two variables into inner scope
While at it, delete empty lines.

function                                             old     new   delta
bc_program_exec                                     4179    4152     -27

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 02:24:14 +01:00
Denys Vlasenko
8fa1e8e6e7 bc: add accessors for G.prog.strs[idx], G.prog.fns[idx]
function                                             old     new   delta
bc_program_str                                         -      17     +17
bc_program_func                                        -      17     +17
bc_program_addFunc                                   209     204      -5
bc_program_reset                                      70      64      -6
bc_program_printStream                               163     157      -6
bc_program_print                                     736     730      -6
bc_vm_file                                           226     219      -7
bc_parse_text                                        143     133     -10
bc_parse_reset                                       163     153     -10
bc_parse_endBody                                     375     365     -10
bc_parse_create                                      168     158     -10
bc_parse_addFunc                                      41      31     -10
bc_program_call                                      364     352     -12
bc_program_read                                      350     335     -15
bc_program_execStr                                   528     502     -26
bc_program_exec                                     4219    4179     -40
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/14 up/down: 34/-173)         Total: -139 bytes
   text	   data	    bss	    dec	    hex	filename
 985043	    485	   7296	 992824	  f2638	busybox_old
 984904	    485	   7296	 992685	  f25ad	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-09 00:03:57 +01:00
Denys Vlasenko
0f37b3286a bc: eliminate always the same params to bc_num_printBase()
function                                             old     new   delta
bc_program_print                                     739     736      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 23:48:53 +01:00
Denys Vlasenko
ebc41c9d94 bc: remove redundant error checks in bc_parse_print()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 23:36:28 +01:00
Denys Vlasenko
5f1b90b91a bc: stop propagating pointer to G.prog.nchars deep into printing functions
function                                             old     new   delta
bc_num_printHex                                       62      71      +9
bc_num_printNewline                                   47      54      +7
bc_num_printDigits                                   132     136      +4
bc_num_printChar                                      23      27      +4
bc_program_printStream                               173     163     -10
bc_program_print                                     754     739     -15
bc_num_printNum                                      538     514     -24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/3 up/down: 24/-49)            Total: -25 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 23:18:06 +01:00
Denys Vlasenko
2a8ad48734 bc: do not pass line width in parameters, it's in globals
function                                             old     new   delta
bc_num_printNewline                                   36      47     +11
bc_num_printHex                                       70      62      -8
bc_num_printDigits                                   142     132     -10
bc_program_printStream                               185     173     -12
bc_program_print                                     773     754     -19
bc_num_printNum                                      563     538     -25
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/5 up/down: 11/-74)            Total: -63 bytes
   text	   data	    bss	    dec	    hex	filename
 985122	    485	   7296	 992903	  f2687	busybox_old
 985059	    485	   7296	 992840	  f2648	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 21:56:37 +01:00
Denys Vlasenko
ac6ed11f8d bc: remove "ready for more input" message, GNU bc does not print that
function                                             old     new   delta
bc_read_line                                         285     268     -17
bc_vm_run                                            684     630     -54
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-71)             Total: -71 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 21:39:10 +01:00
Denys Vlasenko
32ec5f1705 tls: AES-GCM: in GMULT, avoid memcpy, use one less variable in bit loop
function                                             old     new   delta
GMULT                                                168     159      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 21:24:38 +01:00
Denys Vlasenko
6e7c65fca0 bc: trim banner, use empty interactive prompts (GNU bc compat)
function                                             old     new   delta
bc_vm_run                                            689     684      -5
bc_program_read                                      355     350      -5
bc_read_line                                         307     285     -22
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-32)             Total: -32 bytes
   text	   data	    bss	    dec	    hex	filename
 985409	    485	   7296	 993190	  f27a6	busybox_old
 985265	    485	   7296	 993046	  f2716	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 19:34:35 +01:00
Denys Vlasenko
d0bc5fdfea dc: fix "small dc" to have standard command line API
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 18:59:07 +01:00
Denys Vlasenko
23427a63fc lineedit: fix "defined but not used" sigaction2 warning
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 15:45:46 +01:00
Denys Vlasenko
51283b8109 mdev: suppress aliasing warning
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 15:41:17 +01:00
Denys Vlasenko
b437df1157 inetd: suppress aliasing warning
function                                             old     new   delta
sigprocmask2                                           -       8      +8
wait_for_child_or_signal                             213     218      +5
dowait                                               424     429      +5
block_CHLD_HUP_ALRM                                   62      59      -3
sigprocmask_SIG_SETMASK                               16       -     -16
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 2/1 up/down: 18/-19)             Total: -1 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 15:35:24 +01:00
Denys Vlasenko
136fe9bede suppress gcc 8 aliasing warnings
function                                             old     new   delta
sigprocmask_SIG_SETMASK                                -      16     +16
wait_for_child_or_signal                             221     213      -8
dowait                                               432     424      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 13:49:15 +01:00
Denys Vlasenko
9f00a0fdb1 tls: make RIGHTSHIFTX() in AES-GCM faster
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-08 13:34:43 +01:00
Denys Vlasenko
f522dd9420 bc: replace G.eof with a special exit code of bc_vm_stdin()
function                                             old     new   delta
bc_read_line                                         305     307      +2
bc_vm_run                                            701     689     -12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 2/-12)             Total: -10 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-07 16:35:43 +01:00
Denys Vlasenko
2d615fee38 bc: convert two macros to functions, unwing one complex max(a,min(b,c))
function                                             old     new   delta
BC_NUM_AREQ                                            -      45     +45
BC_NUM_MREQ                                            -      33     +33
bc_num_rem                                           104      91     -13
bc_num_divmod                                        168     155     -13
bc_num_d                                             584     569     -15
bc_num_mul                                            80      62     -18
bc_num_mod                                            80      62     -18
bc_num_div                                            80      62     -18
bc_num_sub                                           112      77     -35
bc_num_add                                           112      77     -35
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/8 up/down: 78/-165)           Total: -87 bytes
   text	   data	    bss	    dec	    hex	filename
 985526	    485	   7296	 993307	  f281b	busybox_old
 985439	    485	   7296	 993220	  f27c4	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-07 16:22:45 +01:00
Denys Vlasenko
64074a1767 bc: do not perform domr limit checks when they can't work (e.g. on 32-bit arches)
Also, optimize printing of messages with fixed limit strings
by including limits as strings.

function                                             old     new   delta
bc_num_ulong                                         103      95      -8
bc_lex_number                                        296     281     -15
dc_lex_token                                         701     684     -17
bc_lex_name                                           90      73     -17
bc_num_shift                                          72      54     -18
bc_lex_token                                        1299    1280     -19
bc_parse_stmt                                       1868    1768    -100
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-194)           Total: -194 bytes
   text	   data	    bss	    dec	    hex	filename
 985814	    485	   7296	 993595	  f293b	busybox_old
 985526	    485	   7296	 993307	  f281b	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-07 15:50:14 +01:00
Denys Vlasenko
ffdcebdffe bc: pull temporary into a register
function                                             old     new   delta
bc_num_ulong                                         103      95      -8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-07 15:10:05 +01:00
Denys Vlasenko
18c6b54f82 bc: use more compact parsing data structures
function                                             old     new   delta
dc_lex_token                                         697     701      +4
bc_parse_next_rel                                     20       -     -20
bc_parse_next_read                                    20       -     -20
bc_parse_next_print                                   20       -     -20
bc_parse_next_param                                   20       -     -20
bc_parse_next_for                                     20       -     -20
bc_parse_next_expr                                    20       -     -20
bc_parse_next_elem                                    20       -     -20
common_parse_expr                                     62      40     -22
bc_parse_expr                                         49      24     -25
dc_lex_regs                                           52      13     -39
bc_parse_name                                        581     539     -42
bc_parse_expr_empty_ok                              2157    2108     -49
dc_parse_insts                                       332      83    -249
dc_lex_tokens                                        364      91    -273
bc_parse_stmt                                       2261    1868    -393
------------------------------------------------------------------------------
(add/remove: 0/7 grow/shrink: 1/8 up/down: 4/-1232)         Total: -1228 bytes
   text	   data	    bss	    dec	    hex	filename
 987037	    485	   7296	 994818	  f2e02	busybox_old
 985814	    485	   7296	 993595	  f293b	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-07 12:57:32 +01:00
Denys Vlasenko
b9c321d6d9 bc: use only G_interrupt as interrupt flag
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-07 12:41:42 +01:00
Denys Vlasenko
c7a7ce06b8 bc: fix exit codes for FEATURE_CLEAN_UP=y
$ echo 0/0 | ./busybox bc; echo $?
bc: divide by zero
1
$ echo halt | ./busybox bc; echo $?
0   <------- was 1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-06 23:06:57 +01:00
Denys Vlasenko
a133137174 dc: fix testsuite
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-06 18:46:42 +01:00
Denys Vlasenko
6d0be10aae bc: correctly parse dc options
function                                             old     new   delta
bc_vm_init                                             -     821    +821
bc_vm_file                                             -     226    +226
dc_main                                               41     187    +146
bc_main                                               41      73     +32
packed_usage                                       33076   33059     -17
bc_vm_run                                           1903     701   -1202
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/2 up/down: 1225/-1219)          Total: 6 bytes
   text	   data	    bss	    dec	    hex	filename
 987046	    485	   7296	 994827	  f2e0b	busybox_old
 987037	    485	   7296	 994818	  f2e02	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-06 18:41:59 +01:00
Denys Vlasenko
4c9455f967 dc: fix "dc does_not_exist" SEGVing
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-12-06 15:21:39 +01:00