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insmod: shrink

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function                                             old     new   delta
obj_allocate_commons                                 488     462     -26
insmod_main                                         3830    3714    -116
This commit is contained in:
Denis Vlasenko 2008-08-27 22:29:43 +00:00
parent 8f0e342803
commit 18c93029fd
2 changed files with 16 additions and 20 deletions
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31
modutils/insmod.c
View File

@ -2212,7 +2212,7 @@ static struct obj_section *obj_create_alloced_section(struct obj_file *f,
sec->name = name;
sec->idx = newidx;
if (size)
sec->contents = xmalloc(size);
sec->contents = xzalloc(size);
obj_insert_section_load_order(f, sec);
@ -2227,7 +2227,7 @@ static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
int newidx = f->header.e_shnum++;
struct obj_section *sec;
f->sections = xrealloc(f->sections, (newidx + 1) * sizeof(sec));
f->sections = xrealloc_vector(f->sections, 2, newidx);
f->sections[newidx] = sec = arch_new_section();
sec->header.sh_type = SHT_PROGBITS;
@ -2237,7 +2237,7 @@ static struct obj_section *obj_create_alloced_section_first(struct obj_file *f,
sec->name = name;
sec->idx = newidx;
if (size)
sec->contents = xmalloc(size);
sec->contents = xzalloc(size);
sec->load_next = f->load_order;
f->load_order = sec;
@ -2689,8 +2689,7 @@ static void new_get_kernel_symbols(void)
/* Collect the modules' symbols. */
if (nmod) {
ext_modules = modules = xmalloc(nmod * sizeof(*modules));
memset(modules, 0, nmod * sizeof(*modules));
ext_modules = modules = xzalloc(nmod * sizeof(*modules));
for (i = 0, mn = module_names, m = modules;
i < nmod; ++i, ++m, mn += strlen(mn) + 1) {
struct new_module_info info;
@ -2770,13 +2769,14 @@ static int new_is_kernel_checksummed(void)
}
static void new_create_this_module(struct obj_file *f, const char *m_name)
static void new_create_this_module(struct obj_file *f, const char *m_name)
{
struct obj_section *sec;
sec = obj_create_alloced_section_first(f, ".this", tgt_sizeof_long,
sizeof(struct new_module));
memset(sec->contents, 0, sizeof(struct new_module));
/* done by obj_create_alloced_section_first: */
/*memset(sec->contents, 0, sizeof(struct new_module));*/
obj_add_symbol(f, SPFX "__this_module", -1,
ELF_ST_INFO(STB_LOCAL, STT_OBJECT), sec->idx, 0,
@ -3083,9 +3083,9 @@ static void obj_allocate_commons(struct obj_file *f)
if (i == f->header.e_shnum) {
struct obj_section *sec;
f->header.e_shnum++;
f->sections = xrealloc_vector(f->sections, 2, i);
f->sections[i] = sec = arch_new_section();
f->header.e_shnum = i + 1;
sec->header.sh_type = SHT_PROGBITS;
sec->header.sh_flags = SHF_WRITE | SHF_ALLOC;
@ -3124,12 +3124,9 @@ static void obj_allocate_commons(struct obj_file *f)
for (i = 0; i < f->header.e_shnum; ++i) {
struct obj_section *s = f->sections[i];
if (s->header.sh_type == SHT_NOBITS) {
s->contents = NULL;
if (s->header.sh_size != 0)
s->contents = memset(xmalloc(s->header.sh_size),
0, s->header.sh_size);
else
s->contents = NULL;
s->contents = xzalloc(s->header.sh_size),
s->header.sh_type = SHT_PROGBITS;
}
}
@ -3354,8 +3351,7 @@ static struct obj_file *obj_load(FILE *fp, int loadprogbits UNUSED_PARAM)
}
shnum = f->header.e_shnum;
f->sections = xmalloc(sizeof(struct obj_section *) * shnum);
memset(f->sections, 0, sizeof(struct obj_section *) * shnum);
f->sections = xzalloc(sizeof(struct obj_section *) * shnum);
section_headers = alloca(sizeof(ElfW(Shdr)) * shnum);
fseek(fp, f->header.e_shoff, SEEK_SET);
@ -3391,14 +3387,13 @@ static struct obj_file *obj_load(FILE *fp, int loadprogbits UNUSED_PARAM)
case SHT_SYMTAB:
case SHT_STRTAB:
case SHT_RELM:
sec->contents = NULL;
if (sec->header.sh_size > 0) {
sec->contents = xmalloc(sec->header.sh_size);
sec->contents = xzalloc(sec->header.sh_size);
fseek(fp, sec->header.sh_offset, SEEK_SET);
if (fread(sec->contents, sec->header.sh_size, 1, fp) != 1) {
bb_perror_msg_and_die("error reading ELF section data");
}
} else {
sec->contents = NULL;
}
break;

5
networking/udhcp/dhcpc.c
View File

@ -259,9 +259,10 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
if (opt & OPT_o)
client_config.no_default_options = 1;
while (list_O) {
int n = index_in_strings(dhcp_option_strings, llist_pop(&list_O));
char *optstr = llist_pop(&list_O);
int n = index_in_strings(dhcp_option_strings, optstr);
if (n < 0)
bb_error_msg_and_die("unknown option '%s'", list_O->data);
bb_error_msg_and_die("unknown option '%s'", optstr);
n = dhcp_options[n].code;
client_config.opt_mask[n >> 3] |= 1 << (n & 7);
}