Almost supports arguments for inline asm functions.
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19
py/compile.c
19
py/compile.c
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@ -2507,25 +2507,30 @@ void compile_scope_inline_asm(compiler_t *comp, scope_t *scope, pass_kind_t pass
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return;
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}
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if (comp->pass > PASS_1) {
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EMIT_INLINE_ASM(start_pass, comp->pass, comp->scope_cur);
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}
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// get the function definition parse node
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assert(PY_PARSE_NODE_IS_STRUCT(scope->pn));
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py_parse_node_struct_t *pns = (py_parse_node_struct_t*)scope->pn;
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assert(PY_PARSE_NODE_STRUCT_KIND(pns) == PN_funcdef);
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//qstr f_id = PY_PARSE_NODE_LEAF_ARG(pns->nodes[0]); // name
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//qstr f_id = PY_PARSE_NODE_LEAF_ARG(pns->nodes[0]); // function name
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// parameters are in pns->nodes[1]
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if (comp->pass == PASS_2) {
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py_parse_node_t *pn_params;
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int n_params = list_get(&pns->nodes[1], PN_typedargslist, &pn_params);
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scope->num_params = EMIT_INLINE_ASM(count_params, n_params, pn_params);
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}
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scope->num_params = 0;
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assert(PY_PARSE_NODE_IS_NULL(pns->nodes[1])); // arguments
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assert(PY_PARSE_NODE_IS_NULL(pns->nodes[2])); // type
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py_parse_node_t pn_body = pns->nodes[3]; // body
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py_parse_node_t *nodes;
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int num = list_get(&pn_body, PN_suite_block_stmts, &nodes);
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if (comp->pass > PASS_1) {
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EMIT_INLINE_ASM(start_pass, comp->pass, comp->scope_cur);
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}
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if (comp->pass == PASS_3) {
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//printf("----\n");
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scope_print_info(scope);
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@ -134,8 +134,9 @@ typedef struct _emit_inline_asm_t emit_inline_asm_t;
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typedef struct _emit_inline_asm_method_table_t {
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void (*start_pass)(emit_inline_asm_t *emit, pass_kind_t pass, scope_t *scope);
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void (*end_pass)(emit_inline_asm_t *emit);
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int (*count_params)(emit_inline_asm_t *emit, int n_params, py_parse_node_t *pn_params);
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void (*label)(emit_inline_asm_t *emit, int label_num, qstr label_id);
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void (*op)(emit_inline_asm_t *emit, qstr op, int n_args, py_parse_node_t *args);
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void (*op)(emit_inline_asm_t *emit, qstr op, int n_args, py_parse_node_t *pn_args);
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} emit_inline_asm_method_table_t;
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extern const emit_inline_asm_method_table_t emit_inline_thumb_method_table;
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@ -50,6 +50,25 @@ static void emit_inline_thumb_end_pass(emit_inline_asm_t *emit) {
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}
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}
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static int emit_inline_thumb_count_params(emit_inline_asm_t *emit, int n_params, py_parse_node_t *pn_params) {
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if (n_params > 4) {
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printf("SyntaxError: can only have up to 3 parameters to inline assembler\n");
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return 0;
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}
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for (int i = 0; i < n_params; i++) {
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if (!PY_PARSE_NODE_IS_ID(pn_params[i])) {
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printf("SyntaxError: parameter to inline assembler must be an identifier %d\n", PY_PARSE_NODE_STRUCT_KIND((py_parse_node_struct_t*)pn_params[i]));
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return 0;
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}
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const char *p = qstr_str(PY_PARSE_NODE_LEAF_ARG(pn_params[i]));
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if (!(strlen(p) == 2 && p[0] == 'r' && p[1] == '0' + i)) {
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printf("SyntaxError: parameter %d to inline assembler must be r%d\n", i, i);
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return 0;
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}
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}
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return n_params;
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}
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static void emit_inline_thumb_label(emit_inline_asm_t *emit, int label_num, qstr label_id) {
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assert(label_num < emit->max_num_labels);
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emit->label_lookup[label_num] = label_id;
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@ -65,12 +84,12 @@ static bool check_n_arg(qstr op, int n_args, int wanted_n_args) {
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}
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}
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static uint get_arg_rlo(qstr op, py_parse_node_t *pn_arg, int wanted_arg_num) {
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if (!PY_PARSE_NODE_IS_ID(pn_arg[wanted_arg_num])) {
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static uint get_arg_rlo(qstr op, py_parse_node_t *pn_args, int wanted_arg_num) {
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if (!PY_PARSE_NODE_IS_ID(pn_args[wanted_arg_num])) {
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printf("SyntaxError: '%s' expects a register in position %d\n", qstr_str(op), wanted_arg_num);
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return 0;
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}
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qstr reg_qstr = PY_PARSE_NODE_LEAF_ARG(pn_arg[wanted_arg_num]);
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qstr reg_qstr = PY_PARSE_NODE_LEAF_ARG(pn_args[wanted_arg_num]);
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const char *reg_str = qstr_str(reg_qstr);
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if (!(strlen(reg_str) == 2 && reg_str[0] == 'r' && ('0' <= reg_str[1] && reg_str[1] <= '7'))) {
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printf("SyntaxError: '%s' expects a register in position %d\n", qstr_str(op), wanted_arg_num);
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@ -79,12 +98,12 @@ static uint get_arg_rlo(qstr op, py_parse_node_t *pn_arg, int wanted_arg_num) {
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return reg_str[1] - '0';
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}
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static int get_arg_i(qstr op, py_parse_node_t *pn_arg, int wanted_arg_num, int fit_mask) {
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if (!PY_PARSE_NODE_IS_SMALL_INT(pn_arg[wanted_arg_num])) {
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static int get_arg_i(qstr op, py_parse_node_t *pn_args, int wanted_arg_num, int fit_mask) {
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if (!PY_PARSE_NODE_IS_SMALL_INT(pn_args[wanted_arg_num])) {
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printf("SyntaxError: '%s' expects an integer in position %d\n", qstr_str(op), wanted_arg_num);
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return 0;
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}
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int i = PY_PARSE_NODE_LEAF_ARG(pn_arg[wanted_arg_num]);
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int i = PY_PARSE_NODE_LEAF_ARG(pn_args[wanted_arg_num]);
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if ((i & (~fit_mask)) != 0) {
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printf("SyntaxError: '%s' integer 0x%x does not fit in mask 0x%x\n", qstr_str(op), i, fit_mask);
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return 0;
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@ -92,12 +111,12 @@ static int get_arg_i(qstr op, py_parse_node_t *pn_arg, int wanted_arg_num, int f
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return i;
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}
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static int get_arg_label(emit_inline_asm_t *emit, qstr op, py_parse_node_t *pn_arg, int wanted_arg_num) {
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if (!PY_PARSE_NODE_IS_ID(pn_arg[wanted_arg_num])) {
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static int get_arg_label(emit_inline_asm_t *emit, qstr op, py_parse_node_t *pn_args, int wanted_arg_num) {
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if (!PY_PARSE_NODE_IS_ID(pn_args[wanted_arg_num])) {
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printf("SyntaxError: '%s' expects a label in position %d\n", qstr_str(op), wanted_arg_num);
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return 0;
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}
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qstr label_qstr = PY_PARSE_NODE_LEAF_ARG(pn_arg[wanted_arg_num]);
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qstr label_qstr = PY_PARSE_NODE_LEAF_ARG(pn_args[wanted_arg_num]);
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for (int i = 0; i < emit->max_num_labels; i++) {
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if (emit->label_lookup[i] == label_qstr) {
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return i;
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@ -107,7 +126,7 @@ static int get_arg_label(emit_inline_asm_t *emit, qstr op, py_parse_node_t *pn_a
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return 0;
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}
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static void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, py_parse_node_t *pn_arg) {
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static void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, py_parse_node_t *pn_args) {
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// TODO perhaps make two tables:
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// two_args =
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// "movs", RLO, I8, asm_thumb_movs_reg_i8
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@ -120,7 +139,8 @@ static void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, p
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if (!check_n_arg(op, n_args, 1)) {
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return;
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}
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int label_num = get_arg_label(emit, op, pn_arg, 0);
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int label_num = get_arg_label(emit, op, pn_args, 0);
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// TODO check that this succeeded, ie branch was within range
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asm_thumb_bgt_n(emit->as, label_num);
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// 2 args
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@ -128,22 +148,22 @@ static void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, p
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if (!check_n_arg(op, n_args, 2)) {
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return;
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}
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uint rlo_dest = get_arg_rlo(op, pn_arg, 0);
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int i_src = get_arg_i(op, pn_arg, 1, 0xff);
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uint rlo_dest = get_arg_rlo(op, pn_args, 0);
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int i_src = get_arg_i(op, pn_args, 1, 0xff);
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asm_thumb_movs_rlo_i8(emit->as, rlo_dest, i_src);
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} else if (strcmp(qstr_str(op), "movw") == 0) {
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if (!check_n_arg(op, n_args, 2)) {
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return;
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}
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uint rlo_dest = get_arg_rlo(op, pn_arg, 0); // TODO can be reg lo or hi
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int i_src = get_arg_i(op, pn_arg, 1, 0xffff);
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uint rlo_dest = get_arg_rlo(op, pn_args, 0); // TODO can be reg lo or hi
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int i_src = get_arg_i(op, pn_args, 1, 0xffff);
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asm_thumb_movw_reg_i16(emit->as, rlo_dest, i_src);
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} else if (strcmp(qstr_str(op), "cmp") == 0) {
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if (!check_n_arg(op, n_args, 2)) {
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return;
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}
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uint rlo = get_arg_rlo(op, pn_arg, 0);
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int i8 = get_arg_i(op, pn_arg, 1, 0xff);
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uint rlo = get_arg_rlo(op, pn_args, 0);
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int i8 = get_arg_i(op, pn_args, 1, 0xff);
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asm_thumb_cmp_rlo_i8(emit->as, rlo, i8);
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// 3 args
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@ -151,9 +171,9 @@ static void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, p
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if (!check_n_arg(op, n_args, 3)) {
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return;
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}
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uint rlo_dest = get_arg_rlo(op, pn_arg, 0);
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uint rlo_src = get_arg_rlo(op, pn_arg, 1);
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int i3_src = get_arg_i(op, pn_arg, 2, 0x7);
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uint rlo_dest = get_arg_rlo(op, pn_args, 0);
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uint rlo_src = get_arg_rlo(op, pn_args, 1);
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int i3_src = get_arg_i(op, pn_args, 2, 0x7);
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asm_thumb_subs_rlo_rlo_i3(emit->as, rlo_dest, rlo_src, i3_src);
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// unknown op
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@ -166,6 +186,7 @@ static void emit_inline_thumb_op(emit_inline_asm_t *emit, qstr op, int n_args, p
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const emit_inline_asm_method_table_t emit_inline_thumb_method_table = {
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emit_inline_thumb_start_pass,
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emit_inline_thumb_end_pass,
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emit_inline_thumb_count_params,
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emit_inline_thumb_label,
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emit_inline_thumb_op,
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};
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