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103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/* radare - LGPL - Copyright 2008-2010 pancake<nopcode.org> */
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#include "r_vm.h"
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R_API int r_vm_op_add(struct r_vm_t *vm, const char *op, const char *str) {
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RVmOp *o = R_NEW (RVmOp);
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if (o == NULL)
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return -1;
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strncpy(o->opcode, op, sizeof(o->opcode));
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strncpy(o->code, str, sizeof(o->code));
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list_add_tail(&(o->list), &vm->ops);
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return 0;
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}
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R_API int r_vm_op_eval(struct r_vm_t *vm, const char *str) {
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struct list_head *pos;
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char *p, *s, *arg0;
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int j, k, len = strlen(str)+256;
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int nargs = 0;
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p = alloca(len);
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s = alloca(len);
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memcpy (p, str, len);
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memcpy (s, str, len);
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r_str_subchr (s, ',', 0);
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r_str_subchr (s, '\t', 0);
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r_str_subchr (s, '#', 0);
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nargs = r_str_word_set0(s);
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arg0 = r_str_word_get0(s, 0);
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list_for_each(pos, &vm->ops) {
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struct r_vm_op_t *o = list_entry(pos, struct r_vm_op_t, list);
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if (!strcmp (arg0, o->opcode)) {
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str = o->code;
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p = alloca (strlen (o->code)+128);
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strcpy (p, str);
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for (j=k=0;str[j]!='\0';j++,k++) {
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if (str[j]=='$') {
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j++;
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if (str[j]=='\0') {
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eprintf("invalid string\n");
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return 0;
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}
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#if TODO
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if (str[j]=='$') {
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/* opcode size */
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if (str[j+1]=='$') {
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struct aop_t aop;
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char w[32];
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j++;
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arch_aop(config.seek, config.block,&aop);
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sprintf(w, "%d", aop.length);
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if (w[0]) {
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strcpy(p+k, w);
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k += strlen(w)-1;
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}
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} else {
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char w[32];
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sprintf(w, "0x%08"PFMT64x"", config.seek);
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if (w[0]) {
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strcpy(p+k, w);
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k += strlen(w)-1;
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}
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}
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}
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#endif
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if (str[j]>='0' && str[j]<='9') {
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const char *w = r_str_word_get0(s, str[j]-'0');
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if (w != NULL) {
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strcpy(p+k, w);
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k += strlen(w)-1;
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}
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}
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} else p[k] = str[j];
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}
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p[k]='\0';
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}
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}
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return r_vm_eval (vm, p);
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}
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/* TODO : Allow to remove and so on */
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R_API int r_vm_op_cmd(RVm *vm, const char *op) {
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char *cmd, *ptr;
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int len = strlen (op)+1;
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if (*op==' ')
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op = op + 1;
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cmd = alloca(len);
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memcpy (cmd, op, len);
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ptr = strchr (cmd, ' ');
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if (ptr) {
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// XXX: merge those two functions in one
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ptr[0]='\0';
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if (!memcmp (op, "avo", 3)) {
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r_vm_op_add (vm, cmd, ptr+1);
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if (vm->log)
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eprintf("vm: opcode '%s' added\n", cmd);
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} else r_vm_cmd_reg (vm, op);
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} else r_vm_cmd_op_help ();
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return 0;
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}
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