C++ (Cpp) jit_ldr_uc Examples

Example #1

static void
load_acc_offset(int offset)
{
    acc_const = 0;

    if (acc_loaded) {
	if (acc_offset == offset) return;
	if (acc_dirty)
	    clean_acc();
    }

    acc_offset = offset;
    if (tape_step > 1) {
	if (acc_offset) {
	    jit_ldxi_i(REG_ACC, REG_P, acc_offset * tape_step);
	} else {
	    jit_ldr_i(REG_ACC, REG_P);
	}
    } else {
	if (acc_offset) {
	    jit_ldxi_uc(REG_ACC, REG_P, acc_offset);
	} else {
	    jit_ldr_uc(REG_ACC, REG_P);
	}
    }

    acc_loaded = 1;
    acc_dirty = 0;
    acc_hi_dirty = (tape_step*8 != cell_size);
}

Example #2

File: lightning.c Project: rdebath/Brainfuck

void
outrun(int ch, int count)
{
    jit_node_t    *argp;

    switch(ch) {
    case '!':
	if (bytecell) tape_step = 1; else
	tape_step = sizeof(int);

        init_jit(NULL); // argv[0]);
	_jit = jit_new_state();
	start = jit_note(__FILE__, __LINE__);
	jit_prolog();

	/* Get the data area pointer */
	argp = jit_arg();
	jit_getarg(REG_P, argp);
	break;

    case '~':
	jit_ret();
	jit_epilog();
	end = jit_note(__FILE__, __LINE__);
	codeptr = jit_emit();
	jit_clear_state();
	codeptr(calloc(tape_step, tapelen));
	jit_destroy_state();
	finish_jit();
	codeptr = 0;
	if (loopstack) { free(loopstack); loopstack = 0; }
	break;

    case '>':
	jit_addi(REG_P, REG_P, count * tape_step);
	break;

    case '<':
	jit_subi(REG_P, REG_P, count * tape_step);
	break;

    case '+':
	if (tape_step>1)
	    jit_ldr_i(REG_ACC, REG_P);
	else
	    jit_ldr_uc(REG_ACC, REG_P);
	jit_addi(REG_ACC, REG_ACC, count);
	if (tape_step>1)
	    jit_str_i(REG_P, REG_ACC);
	else
	    jit_str_c(REG_P, REG_ACC);
	break;

    case '-':
	if (tape_step>1)
	    jit_ldr_i(REG_ACC, REG_P);
	else
	    jit_ldr_uc(REG_ACC, REG_P);
	jit_subi(REG_ACC, REG_ACC, count);
	if (tape_step>1)
	    jit_str_i(REG_P, REG_ACC);
	else
	    jit_str_c(REG_P, REG_ACC);
	break;

    case '[':
	if (tape_step>1)
	    jit_ldr_i(REG_ACC, REG_P);
	else
	    jit_ldr_uc(REG_ACC, REG_P);

	if (stackptr >= maxstack) {
	    loopstack = realloc(loopstack,
			((maxstack+=32)+2)*sizeof(*loopstack));
	    if (loopstack == 0) {
		perror("loop stack realloc failure");
		exit(1);
	    }
	}

	loopstack[stackptr] = jit_beqi(REG_ACC, 0);
	loopstack[stackptr+1] = jit_label();
	stackptr += 2;
	break;

    case ']':
	if (tape_step>1)
	    jit_ldr_i(REG_ACC, REG_P);
	else
	    jit_ldr_uc(REG_ACC, REG_P);

	stackptr -= 2;
	if (stackptr < 0) {
	    fprintf(stderr, "Code gen failure: Stack pointer negative.\n");
	    exit(1);
	}

	{
	    jit_node_t *ref;
	    ref = jit_bnei(REG_ACC, 0);
	    jit_patch_at(ref, loopstack[stackptr+1]);
	    jit_patch(loopstack[stackptr]);
	}
	break;

    case '.':
	if (tape_step>1)
	    jit_ldr_i(REG_ACC, REG_P);
	else
	    jit_ldr_uc(REG_ACC, REG_P);

	jit_prepare();
	jit_pushargr(REG_ACC);
	jit_finishi(putchar);
	break;

    case ',':
	jit_prepare();
	jit_pushargr(REG_ACC);
	jit_finishi(getchar);
	jit_retval(REG_ACC);

	if (tape_step>1)
	    jit_str_i(REG_P, REG_ACC);
	else
	    jit_str_c(REG_P, REG_ACC);

	break;
    }
}