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build system: -fno-builtin-printf

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Benefits are: drops reference to out-of-line putchar(), fixes a few cases
of failed string merge.

function                                             old     new   delta
i2cdump_main                                        1488    1502     +14
sha256_process_block64                               423     433     +10
sendmail_main                                       1183    1185      +2
list_table                                          1114    1116      +2
i2cdetect_main                                      1235    1237      +2
fdisk_main                                          2852    2854      +2
builtin_type                                         119     121      +2
unicode_conv_to_printable2                           325     324      -1
scan_recursive                                       380     378      -2
mkfs_minix_main                                     2687    2684      -3
buffer_fill_and_print                                178     169      -9
putchar                                              152       -    -152
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/4 up/down: 34/-167)          Total: -133 bytes
   text    data     bss     dec     hex filename
 937788     932   17676  956396   e97ec busybox_old
 937564     932   17676  956172   e970c busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2015-10-07 22:42:45 +02:00
parent 8c0708a329
commit d60752f8c9
24 changed files with 127 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
miscutils/i2c_tools.c
View File

@@ -701,7 +701,7 @@ int i2cset_main(int argc, char **argv)
}
if (status < 0) {
printf("Warning - readback failed\n");
puts("Warning - readback failed");
} else
if (status != val) {
printf("Warning - data mismatch - wrote "
@@ -756,8 +756,8 @@ static void dump_data(int bus_fd, int mode, unsigned first,
{
int i, j, res;
printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f"
" 0123456789abcdef\n");
puts(" 0 1 2 3 4 5 6 7 8 9 a b c d e f"
" 0123456789abcdef");
for (i = 0; i < I2CDUMP_NUM_REGS; i += 0x10) {
if (mode == I2C_SMBUS_BLOCK_DATA && i >= blen)
@@ -826,22 +826,22 @@ static void dump_data(int bus_fd, int mode, unsigned first,
break;
/* Skip unwanted registers */
if (i+j < first || i+j > last) {
printf(" ");
bb_putchar(' ');
continue;
}
res = block[i+j];
if (res < 0) {
printf("X");
bb_putchar('X');
} else if (res == 0x00 || res == 0xff) {
printf(".");
bb_putchar('.');
} else if (res < 32 || res >= 127) {
printf("?");
bb_putchar('?');
} else {
printf("%c", res);
bb_putchar(res);
}
}
printf("\n");
bb_putchar('\n');
}
}
@@ -850,7 +850,7 @@ static void dump_word_data(int bus_fd, unsigned first, unsigned last)
int i, j, rv;
/* Word data. */
printf(" 0,8 1,9 2,a 3,b 4,c 5,d 6,e 7,f\n");
puts(" 0,8 1,9 2,a 3,b 4,c 5,d 6,e 7,f");
for (i = 0; i < 256; i += 8) {
if (i/8 < first/8)
continue;
@@ -871,7 +871,7 @@ static void dump_word_data(int bus_fd, unsigned first, unsigned last)
else
printf("%04x ", rv & 0xffff);
}
printf("\n");
bb_putchar('\n');
}
}
@@ -1267,7 +1267,7 @@ int i2cdetect_main(int argc UNUSED_PARAM, char **argv)
if (!(opts & opt_y))
confirm_action(-1, -1, -1, 0);
printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n");
puts(" 0 1 2 3 4 5 6 7 8 9 a b c d e f");
for (i = 0; i < 128; i += 16) {
printf("%02x: ", i);
for(j = 0; j < 16; j++) {
@@ -1325,7 +1325,7 @@ int i2cdetect_main(int argc UNUSED_PARAM, char **argv)
else
printf("%02x ", i+j);
}
printf("\n");
bb_putchar('\n');
}
return 0;