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Copy only the necessary number of vararg parameters

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This commit is contained in:
Bill Currie 2020-02-16 18:00:29 +09:00
parent 12d2a0ff75
commit ed283a9e7f
1 changed files with 7 additions and 5 deletions
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12
libs/gamecode/pr_exec.c
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@ -170,7 +170,7 @@ PR_EnterFunction (progs_t *pr, bfunction_t *f)
{ {
pr_int_t i; pr_int_t i;
pr_type_t *dstParams[MAX_PARMS]; pr_type_t *dstParams[MAX_PARMS];
long paramofs = 0; pointer_t paramofs = 0;
PR_PushFrame (pr); PR_PushFrame (pr);
@ -201,7 +201,7 @@ PR_EnterFunction (progs_t *pr, bfunction_t *f)
if (i < MAX_PARMS) { if (i < MAX_PARMS) {
dstParams[i] = pr->pr_globals + paramofs; dstParams[i] = pr->pr_globals + paramofs;
} }
for (; i < MAX_PARMS; i++) { for (; i < pr->pr_argc; i++) {
if (pr->pr_params[i] != pr->pr_real_params[i]) { if (pr->pr_params[i] != pr->pr_real_params[i]) {
copy_param (pr->pr_real_params[i], pr->pr_params[i], copy_param (pr->pr_real_params[i], pr->pr_params[i],
parmsize.size); parmsize.size);
@ -232,16 +232,18 @@ PR_EnterFunction (progs_t *pr, bfunction_t *f)
copy_param (dstParams[i], pr->pr_params[i], f->parm_size[i].size); copy_param (dstParams[i], pr->pr_params[i], f->parm_size[i].size);
} }
} else { } else {
int copy_args;
pr_type_t *argc = &pr->pr_globals[f->parm_start + 0]; pr_type_t *argc = &pr->pr_globals[f->parm_start + 0];
pr_type_t *argv = &pr->pr_globals[f->parm_start + 1]; pr_type_t *argv = &pr->pr_globals[f->parm_start + 1];
for (i = 0; i < -f->numparms - 1; i++) { for (i = 0; i < -f->numparms - 1; i++) {
copy_param (dstParams[i], pr->pr_params[i], f->parm_size[i].size); copy_param (dstParams[i], pr->pr_params[i], f->parm_size[i].size);
} }
argc->integer_var = pr->pr_argc - i; copy_args = pr->pr_argc - i;
argc->integer_var = copy_args;
argv->integer_var = dstParams[i] - pr->pr_globals; argv->integer_var = dstParams[i] - pr->pr_globals;
if (i < MAX_PARMS) { if (i < MAX_PARMS) {
memcpy (dstParams[i], &P_INT (pr, i), memcpy (dstParams[i], pr->pr_params[i],
(MAX_PARMS - i) * pr->pr_param_size * sizeof (pr_type_t)); (copy_args * pr->pr_param_size) * sizeof (pr_type_t));
} }
} }
} }