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bc: add accessors for G.prog.strs[idx], G.prog.fns[idx]

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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>
This commit is contained in:
Denys Vlasenko 2018-12-09 00:03:57 +01:00
parent 0f37b3286a
commit 8fa1e8e6e7
1 changed files with 30 additions and 20 deletions
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50
miscutils/bc.c
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@ -1182,6 +1182,16 @@ static void *bc_vec_item(const BcVec *v, size_t idx)
return v->v + v->size * idx;
}
static char** bc_program_str(size_t idx)
{
return bc_vec_item(&G.prog.strs, idx);
}
static BcFunc* bc_program_func(size_t idx)
{
return bc_vec_item(&G.prog.fns, idx);
}
static void *bc_vec_item_rev(const BcVec *v, size_t idx)
{
return v->v + v->size * (v->len - idx - 1);
@ -3593,7 +3603,7 @@ static void bc_program_addFunc(char *name, size_t *idx);
static void bc_parse_addFunc(BcParse *p, char *name, size_t *idx)
{
bc_program_addFunc(name, idx);
p->func = bc_vec_item(&G.prog.fns, p->fidx);
p->func = bc_program_func(p->fidx);
}
#define bc_parse_push(p, i) bc_vec_pushByte(&(p)->func->code, (char) (i))
@ -3639,7 +3649,7 @@ static BcStatus bc_parse_text(BcParse *p, const char *text)
{
BcStatus s;
p->func = bc_vec_item(&G.prog.fns, p->fidx);
p->func = bc_program_func(p->fidx);
if (!text[0] && !BC_PARSE_CAN_EXEC(p)) {
p->l.t.t = BC_LEX_INVALID;
@ -3662,13 +3672,13 @@ static void bc_program_reset(void)
bc_vec_npop(&G.prog.stack, G.prog.stack.len - 1);
bc_vec_pop_all(&G.prog.results);
f = bc_vec_item(&G.prog.fns, 0);
f = bc_program_func(0);
ip = bc_vec_top(&G.prog.stack);
ip->idx = f->code.len;
}
#define bc_parse_updateFunc(p, f) \
((p)->func = bc_vec_item(&G.prog.fns, ((p)->fidx = (f))))
((p)->func = bc_program_func((p)->fidx = (f)))
// Called when bc/dc_parse_parse() detects a failure,
// resets parsing structures.
@ -5541,7 +5551,7 @@ static BcStatus bc_program_read(void)
BcVec buf;
BcInstPtr ip;
size_t i;
BcFunc *f = bc_vec_item(&G.prog.fns, BC_PROG_READ);
BcFunc *f = bc_program_func(BC_PROG_READ);
for (i = 0; i < G.prog.stack.len; ++i) {
BcInstPtr *ip_ptr = bc_vec_item(&G.prog.stack, i);
@ -5576,7 +5586,7 @@ static BcStatus bc_program_read(void)
ip.len = G.prog.results.len;
// Update this pointer, just in case.
f = bc_vec_item(&G.prog.fns, BC_PROG_READ);
f = bc_program_func(BC_PROG_READ);
bc_vec_pushByte(&f->code, BC_INST_POP_EXEC);
bc_vec_push(&G.prog.stack, &ip);
@ -5725,7 +5735,7 @@ static BcStatus bc_program_print(char inst, size_t idx)
else {
idx = (r->t == BC_RESULT_STR) ? r->d.id.idx : num->rdx;
str = *((char **) bc_vec_item(&G.prog.strs, idx));
str = *bc_program_str(idx);
if (inst == BC_INST_PRINT_STR) {
for (i = 0, len = strlen(str); i < len; ++i) {
@ -6125,7 +6135,7 @@ static BcStatus bc_program_call(char *code, size_t *idx)
ip.idx = 0;
ip.func = bc_program_index(code, idx);
func = bc_vec_item(&G.prog.fns, ip.func);
func = bc_program_func(ip.func);
if (func->code.len == 0) {
return bc_error("undefined function");
@ -6179,7 +6189,7 @@ static BcStatus bc_program_return(char inst)
if (!BC_PROG_STACK(&G.prog.results, ip->len + inst == BC_INST_RET))
return bc_error_stack_has_too_few_elements();
f = bc_vec_item(&G.prog.fns, ip->func);
f = bc_program_func(ip->func);
res.t = BC_RESULT_TEMP;
if (inst == BC_INST_RET) {
@ -6265,7 +6275,7 @@ static BcStatus bc_program_builtin(char inst)
char **str;
size_t idx = opnd->t == BC_RESULT_STR ? opnd->d.id.idx : num->rdx;
str = bc_vec_item(&G.prog.strs, idx);
str = bc_program_str(idx);
bc_num_ulong2num(&res.d.n, strlen(*str));
}
#endif
@ -6397,7 +6407,7 @@ static BcStatus bc_program_asciify(void)
}
else {
idx = (r->t == BC_RESULT_STR) ? r->d.id.idx : num->rdx;
str2 = *((char **) bc_vec_item(&G.prog.strs, idx));
str2 = *bc_program_str(idx);
c = str2[0];
}
@ -6411,7 +6421,7 @@ static BcStatus bc_program_asciify(void)
if (idx != len + BC_PROG_REQ_FUNCS) {
for (idx = 0; idx < G.prog.strs.len; ++idx) {
if (!strcmp(*((char **) bc_vec_item(&G.prog.strs, idx)), str)) {
if (strcmp(*bc_program_str(idx), str) == 0) {
len = idx;
break;
}
@ -6453,7 +6463,7 @@ static BcStatus bc_program_printStream(void)
s = bc_num_stream(n, &G.prog.strmb);
else {
idx = (r->t == BC_RESULT_STR) ? r->d.id.idx : n->rdx;
str = *((char **) bc_vec_item(&G.prog.strs, idx));
str = *bc_program_str(idx);
printf("%s", str);
}
@ -6553,8 +6563,8 @@ static BcStatus bc_program_execStr(char *code, size_t *bgn,
fidx = sidx + BC_PROG_REQ_FUNCS;
str = bc_vec_item(&G.prog.strs, sidx);
f = bc_vec_item(&G.prog.fns, fidx);
str = bc_program_str(sidx);
f = bc_program_func(fidx);
if (f->code.len == 0) {
common_parse_init(&prs, fidx);
@ -6582,7 +6592,7 @@ static BcStatus bc_program_execStr(char *code, size_t *bgn,
err:
bc_parse_free(&prs);
f = bc_vec_item(&G.prog.fns, fidx);
f = bc_program_func(fidx);
bc_vec_pop_all(&f->code);
exit:
bc_vec_pop(&G.prog.results);
@ -6625,7 +6635,7 @@ static void bc_program_addFunc(char *name, size_t *idx)
if (!inserted) {
BcFunc *func = bc_vec_item(&G.prog.fns, entry_ptr->idx);
BcFunc *func = bc_program_func(entry_ptr->idx);
// We need to reset these, so the function can be repopulated.
func->nparams = 0;
@ -6646,7 +6656,7 @@ static BcStatus bc_program_exec(void)
BcResult r, *ptr;
BcNum *num;
BcInstPtr *ip = bc_vec_top(&G.prog.stack);
BcFunc *func = bc_vec_item(&G.prog.fns, ip->func);
BcFunc *func = bc_program_func(ip->func);
char *code = func->code.v;
bool cond = false;
@ -6956,7 +6966,7 @@ static BcStatus bc_program_exec(void)
// If the stack has changed, pointers may be invalid.
ip = bc_vec_top(&G.prog.stack);
func = bc_vec_item(&G.prog.fns, ip->func);
func = bc_program_func(ip->func);
code = func->code.v;
}
@ -7089,7 +7099,7 @@ static BcStatus bc_vm_file(const char *file)
s = bc_vm_process(data);
if (s) goto err;
main_func = bc_vec_item(&G.prog.fns, BC_PROG_MAIN);
main_func = bc_program_func(BC_PROG_MAIN);
ip = bc_vec_item(&G.prog.stack, 0);
if (main_func->code.len < ip->idx)