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2749 lines
113 KiB
2749 lines
113 KiB
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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// Essentially normal Python has 1 type: Python objects
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// Viper has more than 1 type, and is just a more complicated (a superset of) Python.
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// If you declare everything in Viper as a Python object (ie omit type decls) then
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// it should in principle be exactly the same as Python native.
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// Having types means having more opcodes, like binary_op_nat_nat, binary_op_nat_obj etc.
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// In practice we won't have a VM but rather do this in asm which is actually very minimal.
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// Because it breaks strict Python equivalence it should be a completely separate
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// decorator. It breaks equivalence because overflow on integers wraps around.
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// It shouldn't break equivalence if you don't use the new types, but since the
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// type decls might be used in normal Python for other reasons, it's probably safest,
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// cleanest and clearest to make it a separate decorator.
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// Actually, it does break equivalence because integers default to native integers,
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// not Python objects.
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// for x in l[0:8]: can be compiled into a native loop if l has pointer type
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "py/emit.h"
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#include "py/bc.h"
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#if MICROPY_DEBUG_VERBOSE // print debugging info
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#define DEBUG_PRINT (1)
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#define DEBUG_printf DEBUG_printf
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#else // don't print debugging info
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#define DEBUG_printf(...) (void)0
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#endif
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// wrapper around everything in this file
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#if N_X64 || N_X86 || N_THUMB || N_ARM || N_XTENSA
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// C stack layout for native functions:
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// 0: nlr_buf_t [optional]
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// emit->code_state_start: mp_code_state_t
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// emit->stack_start: Python object stack | emit->n_state
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// locals (reversed, L0 at end) |
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//
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// C stack layout for native generator functions:
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// 0=emit->stack_start: nlr_buf_t
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//
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// Then REG_GENERATOR_STATE points to:
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// 0=emit->code_state_start: mp_code_state_t
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// emit->stack_start: Python object stack | emit->n_state
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// locals (reversed, L0 at end) |
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//
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// C stack layout for viper functions:
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// 0: nlr_buf_t [optional]
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// emit->code_state_start: fun_obj, old_globals [optional]
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// emit->stack_start: Python object stack | emit->n_state
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// locals (reversed, L0 at end) |
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// (L0-L2 may be in regs instead)
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// Word index of nlr_buf_t.ret_val
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#define NLR_BUF_IDX_RET_VAL (1)
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// Whether the viper function needs access to fun_obj
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#define NEED_FUN_OBJ(emit) ((emit)->scope->exc_stack_size > 0 \
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|| ((emit)->scope->scope_flags & (MP_SCOPE_FLAG_REFGLOBALS | MP_SCOPE_FLAG_HASCONSTS)))
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// Whether the native/viper function needs to be wrapped in an exception handler
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#define NEED_GLOBAL_EXC_HANDLER(emit) ((emit)->scope->exc_stack_size > 0 \
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|| ((emit)->scope->scope_flags & (MP_SCOPE_FLAG_GENERATOR | MP_SCOPE_FLAG_REFGLOBALS)))
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// Whether registers can be used to store locals (only true if there are no
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// exception handlers, because otherwise an nlr_jump will restore registers to
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// their state at the start of the function and updates to locals will be lost)
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#define CAN_USE_REGS_FOR_LOCALS(emit) ((emit)->scope->exc_stack_size == 0 && !(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR))
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// Indices within the local C stack for various variables
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#define LOCAL_IDX_EXC_VAL(emit) (NLR_BUF_IDX_RET_VAL)
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#define LOCAL_IDX_EXC_HANDLER_PC(emit) (NLR_BUF_IDX_LOCAL_1)
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#define LOCAL_IDX_EXC_HANDLER_UNWIND(emit) (NLR_BUF_IDX_LOCAL_2)
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#define LOCAL_IDX_RET_VAL(emit) (NLR_BUF_IDX_LOCAL_3)
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#define LOCAL_IDX_FUN_OBJ(emit) ((emit)->code_state_start + offsetof(mp_code_state_t, fun_bc) / sizeof(uintptr_t))
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#define LOCAL_IDX_OLD_GLOBALS(emit) ((emit)->code_state_start + offsetof(mp_code_state_t, ip) / sizeof(uintptr_t))
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#define LOCAL_IDX_GEN_PC(emit) ((emit)->code_state_start + offsetof(mp_code_state_t, ip) / sizeof(uintptr_t))
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#define LOCAL_IDX_LOCAL_VAR(emit, local_num) ((emit)->stack_start + (emit)->n_state - 1 - (local_num))
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#define REG_GENERATOR_STATE (REG_LOCAL_3)
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#define EMIT_NATIVE_VIPER_TYPE_ERROR(emit, ...) do { \
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*emit->error_slot = mp_obj_new_exception_msg_varg(&mp_type_ViperTypeError, __VA_ARGS__); \
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} while (0)
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typedef enum {
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STACK_VALUE,
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STACK_REG,
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STACK_IMM,
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} stack_info_kind_t;
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// these enums must be distinct and the bottom 4 bits
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// must correspond to the correct MP_NATIVE_TYPE_xxx value
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typedef enum {
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VTYPE_PYOBJ = 0x00 | MP_NATIVE_TYPE_OBJ,
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VTYPE_BOOL = 0x00 | MP_NATIVE_TYPE_BOOL,
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VTYPE_INT = 0x00 | MP_NATIVE_TYPE_INT,
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VTYPE_UINT = 0x00 | MP_NATIVE_TYPE_UINT,
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VTYPE_PTR = 0x00 | MP_NATIVE_TYPE_PTR,
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VTYPE_PTR8 = 0x00 | MP_NATIVE_TYPE_PTR8,
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VTYPE_PTR16 = 0x00 | MP_NATIVE_TYPE_PTR16,
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VTYPE_PTR32 = 0x00 | MP_NATIVE_TYPE_PTR32,
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VTYPE_PTR_NONE = 0x50 | MP_NATIVE_TYPE_PTR,
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VTYPE_UNBOUND = 0x60 | MP_NATIVE_TYPE_OBJ,
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VTYPE_BUILTIN_CAST = 0x70 | MP_NATIVE_TYPE_OBJ,
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} vtype_kind_t;
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int mp_native_type_from_qstr(qstr qst) {
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switch (qst) {
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case MP_QSTR_object: return MP_NATIVE_TYPE_OBJ;
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case MP_QSTR_bool: return MP_NATIVE_TYPE_BOOL;
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case MP_QSTR_int: return MP_NATIVE_TYPE_INT;
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case MP_QSTR_uint: return MP_NATIVE_TYPE_UINT;
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case MP_QSTR_ptr: return MP_NATIVE_TYPE_PTR;
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case MP_QSTR_ptr8: return MP_NATIVE_TYPE_PTR8;
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case MP_QSTR_ptr16: return MP_NATIVE_TYPE_PTR16;
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case MP_QSTR_ptr32: return MP_NATIVE_TYPE_PTR32;
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default: return -1;
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}
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}
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STATIC qstr vtype_to_qstr(vtype_kind_t vtype) {
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switch (vtype) {
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case VTYPE_PYOBJ: return MP_QSTR_object;
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case VTYPE_BOOL: return MP_QSTR_bool;
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case VTYPE_INT: return MP_QSTR_int;
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case VTYPE_UINT: return MP_QSTR_uint;
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case VTYPE_PTR: return MP_QSTR_ptr;
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case VTYPE_PTR8: return MP_QSTR_ptr8;
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case VTYPE_PTR16: return MP_QSTR_ptr16;
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case VTYPE_PTR32: return MP_QSTR_ptr32;
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case VTYPE_PTR_NONE: default: return MP_QSTR_None;
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}
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}
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typedef struct _stack_info_t {
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vtype_kind_t vtype;
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stack_info_kind_t kind;
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union {
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int u_reg;
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mp_int_t u_imm;
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} data;
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} stack_info_t;
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#define UNWIND_LABEL_UNUSED (0x7fff)
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#define UNWIND_LABEL_DO_FINAL_UNWIND (0x7ffe)
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typedef struct _exc_stack_entry_t {
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uint16_t label : 15;
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uint16_t is_finally : 1;
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uint16_t unwind_label : 15;
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uint16_t is_active : 1;
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} exc_stack_entry_t;
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struct _emit_t {
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mp_obj_t *error_slot;
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uint *label_slot;
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uint exit_label;
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int pass;
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bool do_viper_types;
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mp_uint_t local_vtype_alloc;
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vtype_kind_t *local_vtype;
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mp_uint_t stack_info_alloc;
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stack_info_t *stack_info;
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vtype_kind_t saved_stack_vtype;
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size_t exc_stack_alloc;
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size_t exc_stack_size;
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exc_stack_entry_t *exc_stack;
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int prelude_offset;
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int start_offset;
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int n_state;
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uint16_t code_state_start;
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uint16_t stack_start;
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int stack_size;
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uint16_t const_table_cur_obj;
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uint16_t const_table_num_obj;
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uint16_t const_table_cur_raw_code;
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mp_uint_t *const_table;
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bool last_emit_was_return_value;
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scope_t *scope;
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ASM_T *as;
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};
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STATIC const uint8_t reg_local_table[REG_LOCAL_NUM] = {REG_LOCAL_1, REG_LOCAL_2, REG_LOCAL_3};
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STATIC void emit_native_global_exc_entry(emit_t *emit);
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STATIC void emit_native_global_exc_exit(emit_t *emit);
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emit_t *EXPORT_FUN(new)(mp_obj_t *error_slot, uint *label_slot, mp_uint_t max_num_labels) {
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emit_t *emit = m_new0(emit_t, 1);
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emit->error_slot = error_slot;
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emit->label_slot = label_slot;
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emit->stack_info_alloc = 8;
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emit->stack_info = m_new(stack_info_t, emit->stack_info_alloc);
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emit->exc_stack_alloc = 8;
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emit->exc_stack = m_new(exc_stack_entry_t, emit->exc_stack_alloc);
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emit->as = m_new0(ASM_T, 1);
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mp_asm_base_init(&emit->as->base, max_num_labels);
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return emit;
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}
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void EXPORT_FUN(free)(emit_t *emit) {
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mp_asm_base_deinit(&emit->as->base, false);
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m_del_obj(ASM_T, emit->as);
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m_del(exc_stack_entry_t, emit->exc_stack, emit->exc_stack_alloc);
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m_del(vtype_kind_t, emit->local_vtype, emit->local_vtype_alloc);
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m_del(stack_info_t, emit->stack_info, emit->stack_info_alloc);
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m_del_obj(emit_t, emit);
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}
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STATIC void emit_call_with_imm_arg(emit_t *emit, mp_fun_kind_t fun_kind, mp_int_t arg_val, int arg_reg);
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STATIC void emit_native_mov_reg_const(emit_t *emit, int reg_dest, int const_val) {
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ASM_LOAD_REG_REG_OFFSET(emit->as, reg_dest, REG_FUN_TABLE, const_val);
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}
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STATIC void emit_native_mov_state_reg(emit_t *emit, int local_num, int reg_src) {
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if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
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ASM_STORE_REG_REG_OFFSET(emit->as, reg_src, REG_GENERATOR_STATE, local_num);
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} else {
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ASM_MOV_LOCAL_REG(emit->as, local_num, reg_src);
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}
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}
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STATIC void emit_native_mov_reg_state(emit_t *emit, int reg_dest, int local_num) {
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if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
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ASM_LOAD_REG_REG_OFFSET(emit->as, reg_dest, REG_GENERATOR_STATE, local_num);
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} else {
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ASM_MOV_REG_LOCAL(emit->as, reg_dest, local_num);
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}
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}
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STATIC void emit_native_mov_reg_state_addr(emit_t *emit, int reg_dest, int local_num) {
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if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
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ASM_MOV_REG_IMM(emit->as, reg_dest, local_num * ASM_WORD_SIZE);
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ASM_ADD_REG_REG(emit->as, reg_dest, REG_GENERATOR_STATE);
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} else {
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ASM_MOV_REG_LOCAL_ADDR(emit->as, reg_dest, local_num);
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}
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}
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#define emit_native_mov_state_imm_via(emit, local_num, imm, reg_temp) \
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do { \
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ASM_MOV_REG_IMM((emit)->as, (reg_temp), (imm)); \
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emit_native_mov_state_reg((emit), (local_num), (reg_temp)); \
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} while (false)
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STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scope) {
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DEBUG_printf("start_pass(pass=%u, scope=%p)\n", pass, scope);
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emit->pass = pass;
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emit->do_viper_types = scope->emit_options == MP_EMIT_OPT_VIPER;
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emit->stack_size = 0;
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emit->const_table_cur_obj = 1; // first entry is for mp_fun_table
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emit->const_table_cur_raw_code = 0;
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emit->last_emit_was_return_value = false;
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emit->scope = scope;
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// allocate memory for keeping track of the types of locals
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if (emit->local_vtype_alloc < scope->num_locals) {
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emit->local_vtype = m_renew(vtype_kind_t, emit->local_vtype, emit->local_vtype_alloc, scope->num_locals);
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emit->local_vtype_alloc = scope->num_locals;
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}
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// set default type for arguments
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mp_uint_t num_args = emit->scope->num_pos_args + emit->scope->num_kwonly_args;
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if (scope->scope_flags & MP_SCOPE_FLAG_VARARGS) {
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num_args += 1;
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}
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if (scope->scope_flags & MP_SCOPE_FLAG_VARKEYWORDS) {
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num_args += 1;
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}
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for (mp_uint_t i = 0; i < num_args; i++) {
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emit->local_vtype[i] = VTYPE_PYOBJ;
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}
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// Set viper type for arguments
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if (emit->do_viper_types) {
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for (int i = 0; i < emit->scope->id_info_len; ++i) {
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id_info_t *id = &emit->scope->id_info[i];
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if (id->flags & ID_FLAG_IS_PARAM) {
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assert(id->local_num < emit->local_vtype_alloc);
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emit->local_vtype[id->local_num] = id->flags >> ID_FLAG_VIPER_TYPE_POS;
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}
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}
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}
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// local variables begin unbound, and have unknown type
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for (mp_uint_t i = num_args; i < emit->local_vtype_alloc; i++) {
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emit->local_vtype[i] = VTYPE_UNBOUND;
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}
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// values on stack begin unbound
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for (mp_uint_t i = 0; i < emit->stack_info_alloc; i++) {
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emit->stack_info[i].kind = STACK_VALUE;
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emit->stack_info[i].vtype = VTYPE_UNBOUND;
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}
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mp_asm_base_start_pass(&emit->as->base, pass == MP_PASS_EMIT ? MP_ASM_PASS_EMIT : MP_ASM_PASS_COMPUTE);
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// generate code for entry to function
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// Work out start of code state (mp_code_state_t or reduced version for viper)
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emit->code_state_start = 0;
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if (NEED_GLOBAL_EXC_HANDLER(emit)) {
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emit->code_state_start = sizeof(nlr_buf_t) / sizeof(uintptr_t);
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}
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if (emit->do_viper_types) {
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// Work out size of state (locals plus stack)
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// n_state counts all stack and locals, even those in registers
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emit->n_state = scope->num_locals + scope->stack_size;
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int num_locals_in_regs = 0;
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if (CAN_USE_REGS_FOR_LOCALS(emit)) {
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num_locals_in_regs = scope->num_locals;
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if (num_locals_in_regs > REG_LOCAL_NUM) {
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num_locals_in_regs = REG_LOCAL_NUM;
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}
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// Need a spot for REG_LOCAL_3 if 4 or more args (see below)
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if (scope->num_pos_args >= 4) {
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--num_locals_in_regs;
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}
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}
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// Work out where the locals and Python stack start within the C stack
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if (NEED_GLOBAL_EXC_HANDLER(emit)) {
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// Reserve 2 words for function object and old globals
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emit->stack_start = emit->code_state_start + 2;
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} else if (scope->scope_flags & MP_SCOPE_FLAG_HASCONSTS) {
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// Reserve 1 word for function object, to access const table
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emit->stack_start = emit->code_state_start + 1;
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} else {
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emit->stack_start = emit->code_state_start + 0;
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}
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// Entry to function
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ASM_ENTRY(emit->as, emit->stack_start + emit->n_state - num_locals_in_regs);
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#if N_X86
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asm_x86_mov_arg_to_r32(emit->as, 0, REG_ARG_1);
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#endif
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// Load REG_FUN_TABLE with a pointer to mp_fun_table, found in the const_table
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ASM_LOAD_REG_REG_OFFSET(emit->as, REG_LOCAL_3, REG_ARG_1, offsetof(mp_obj_fun_bc_t, const_table) / sizeof(uintptr_t));
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ASM_LOAD_REG_REG_OFFSET(emit->as, REG_FUN_TABLE, REG_LOCAL_3, 0);
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// Store function object (passed as first arg) to stack if needed
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if (NEED_FUN_OBJ(emit)) {
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ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_FUN_OBJ(emit), REG_ARG_1);
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}
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// Put n_args in REG_ARG_1, n_kw in REG_ARG_2, args array in REG_LOCAL_3
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#if N_X86
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asm_x86_mov_arg_to_r32(emit->as, 1, REG_ARG_1);
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asm_x86_mov_arg_to_r32(emit->as, 2, REG_ARG_2);
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asm_x86_mov_arg_to_r32(emit->as, 3, REG_LOCAL_3);
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#else
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ASM_MOV_REG_REG(emit->as, REG_ARG_1, REG_ARG_2);
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ASM_MOV_REG_REG(emit->as, REG_ARG_2, REG_ARG_3);
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ASM_MOV_REG_REG(emit->as, REG_LOCAL_3, REG_ARG_4);
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#endif
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// Check number of args matches this function, and call mp_arg_check_num_sig if not
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ASM_JUMP_IF_REG_NONZERO(emit->as, REG_ARG_2, *emit->label_slot + 4, true);
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ASM_MOV_REG_IMM(emit->as, REG_ARG_3, scope->num_pos_args);
|
|
ASM_JUMP_IF_REG_EQ(emit->as, REG_ARG_1, REG_ARG_3, *emit->label_slot + 5);
|
|
mp_asm_base_label_assign(&emit->as->base, *emit->label_slot + 4);
|
|
ASM_MOV_REG_IMM(emit->as, REG_ARG_3, MP_OBJ_FUN_MAKE_SIG(scope->num_pos_args, scope->num_pos_args, false));
|
|
ASM_CALL_IND(emit->as, MP_F_ARG_CHECK_NUM_SIG);
|
|
mp_asm_base_label_assign(&emit->as->base, *emit->label_slot + 5);
|
|
|
|
// Store arguments into locals (reg or stack), converting to native if needed
|
|
for (int i = 0; i < emit->scope->num_pos_args; i++) {
|
|
int r = REG_ARG_1;
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_ARG_1, REG_LOCAL_3, i);
|
|
if (emit->local_vtype[i] != VTYPE_PYOBJ) {
|
|
emit_call_with_imm_arg(emit, MP_F_CONVERT_OBJ_TO_NATIVE, emit->local_vtype[i], REG_ARG_2);
|
|
r = REG_RET;
|
|
}
|
|
// REG_LOCAL_3 points to the args array so be sure not to overwrite it if it's still needed
|
|
if (i < REG_LOCAL_NUM && CAN_USE_REGS_FOR_LOCALS(emit) && (i != 2 || emit->scope->num_pos_args == 3)) {
|
|
ASM_MOV_REG_REG(emit->as, reg_local_table[i], r);
|
|
} else {
|
|
emit_native_mov_state_reg(emit, LOCAL_IDX_LOCAL_VAR(emit, i), r);
|
|
}
|
|
}
|
|
// Get 3rd local from the stack back into REG_LOCAL_3 if this reg couldn't be written to above
|
|
if (emit->scope->num_pos_args >= 4 && CAN_USE_REGS_FOR_LOCALS(emit)) {
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_LOCAL_3, LOCAL_IDX_LOCAL_VAR(emit, 2));
|
|
}
|
|
|
|
emit_native_global_exc_entry(emit);
|
|
|
|
} else {
|
|
// work out size of state (locals plus stack)
|
|
emit->n_state = scope->num_locals + scope->stack_size;
|
|
|
|
if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
|
|
emit->code_state_start = 0;
|
|
emit->stack_start = sizeof(mp_code_state_t) / sizeof(mp_uint_t);
|
|
mp_asm_base_data(&emit->as->base, ASM_WORD_SIZE, (uintptr_t)emit->prelude_offset);
|
|
mp_asm_base_data(&emit->as->base, ASM_WORD_SIZE, (uintptr_t)emit->start_offset);
|
|
ASM_ENTRY(emit->as, sizeof(nlr_buf_t) / sizeof(uintptr_t));
|
|
|
|
// Put address of code_state into REG_GENERATOR_STATE
|
|
#if N_X86
|
|
asm_x86_mov_arg_to_r32(emit->as, 0, REG_GENERATOR_STATE);
|
|
#else
|
|
ASM_MOV_REG_REG(emit->as, REG_GENERATOR_STATE, REG_ARG_1);
|
|
#endif
|
|
|
|
// Put throw value into LOCAL_IDX_EXC_VAL slot, for yield/yield-from
|
|
#if N_X86
|
|
asm_x86_mov_arg_to_r32(emit->as, 1, REG_ARG_2);
|
|
#endif
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_VAL(emit), REG_ARG_2);
|
|
|
|
// Load REG_FUN_TABLE with a pointer to mp_fun_table, found in the const_table
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_TEMP0, REG_GENERATOR_STATE, LOCAL_IDX_FUN_OBJ(emit));
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_TEMP0, REG_TEMP0, offsetof(mp_obj_fun_bc_t, const_table) / sizeof(uintptr_t));
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_FUN_TABLE, REG_TEMP0, emit->scope->num_pos_args + emit->scope->num_kwonly_args);
|
|
} else {
|
|
// The locals and stack start after the code_state structure
|
|
emit->stack_start = emit->code_state_start + sizeof(mp_code_state_t) / sizeof(mp_uint_t);
|
|
|
|
// Allocate space on C-stack for code_state structure, which includes state
|
|
ASM_ENTRY(emit->as, emit->stack_start + emit->n_state);
|
|
|
|
// Prepare incoming arguments for call to mp_setup_code_state
|
|
|
|
#if N_X86
|
|
asm_x86_mov_arg_to_r32(emit->as, 0, REG_ARG_1);
|
|
asm_x86_mov_arg_to_r32(emit->as, 1, REG_ARG_2);
|
|
asm_x86_mov_arg_to_r32(emit->as, 2, REG_ARG_3);
|
|
asm_x86_mov_arg_to_r32(emit->as, 3, REG_ARG_4);
|
|
#endif
|
|
|
|
// Load REG_FUN_TABLE with a pointer to mp_fun_table, found in the const_table
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_LOCAL_3, REG_ARG_1, offsetof(mp_obj_fun_bc_t, const_table) / sizeof(uintptr_t));
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_FUN_TABLE, REG_LOCAL_3, emit->scope->num_pos_args + emit->scope->num_kwonly_args);
|
|
|
|
// Set code_state.fun_bc
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_FUN_OBJ(emit), REG_ARG_1);
|
|
|
|
// Set code_state.ip (offset from start of this function to prelude info)
|
|
// TODO this encoding may change size in the final pass, need to make it fixed
|
|
emit_native_mov_state_imm_via(emit, emit->code_state_start + offsetof(mp_code_state_t, ip) / sizeof(uintptr_t), emit->prelude_offset, REG_ARG_1);
|
|
|
|
// Put address of code_state into first arg
|
|
ASM_MOV_REG_LOCAL_ADDR(emit->as, REG_ARG_1, emit->code_state_start);
|
|
|
|
// Call mp_setup_code_state to prepare code_state structure
|
|
#if N_THUMB
|
|
asm_thumb_bl_ind(emit->as, MP_F_SETUP_CODE_STATE, ASM_THUMB_REG_R4);
|
|
#elif N_ARM
|
|
asm_arm_bl_ind(emit->as, MP_F_SETUP_CODE_STATE, ASM_ARM_REG_R4);
|
|
#else
|
|
ASM_CALL_IND(emit->as, MP_F_SETUP_CODE_STATE);
|
|
#endif
|
|
}
|
|
|
|
emit_native_global_exc_entry(emit);
|
|
|
|
// cache some locals in registers, but only if no exception handlers
|
|
if (CAN_USE_REGS_FOR_LOCALS(emit)) {
|
|
for (int i = 0; i < REG_LOCAL_NUM && i < scope->num_locals; ++i) {
|
|
ASM_MOV_REG_LOCAL(emit->as, reg_local_table[i], LOCAL_IDX_LOCAL_VAR(emit, i));
|
|
}
|
|
}
|
|
|
|
// set the type of closed over variables
|
|
for (mp_uint_t i = 0; i < scope->id_info_len; i++) {
|
|
id_info_t *id = &scope->id_info[i];
|
|
if (id->kind == ID_INFO_KIND_CELL) {
|
|
emit->local_vtype[id->local_num] = VTYPE_PYOBJ;
|
|
}
|
|
}
|
|
|
|
if (pass == MP_PASS_EMIT) {
|
|
// write argument names as qstr objects
|
|
// see comment in corresponding part of emitbc.c about the logic here
|
|
for (int i = 0; i < scope->num_pos_args + scope->num_kwonly_args; i++) {
|
|
qstr qst = MP_QSTR__star_;
|
|
for (int j = 0; j < scope->id_info_len; ++j) {
|
|
id_info_t *id = &scope->id_info[j];
|
|
if ((id->flags & ID_FLAG_IS_PARAM) && id->local_num == i) {
|
|
qst = id->qst;
|
|
break;
|
|
}
|
|
}
|
|
emit->const_table[i] = (mp_uint_t)MP_OBJ_NEW_QSTR(qst);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
STATIC void emit_native_end_pass(emit_t *emit) {
|
|
emit_native_global_exc_exit(emit);
|
|
|
|
if (!emit->do_viper_types) {
|
|
emit->prelude_offset = mp_asm_base_get_code_pos(&emit->as->base);
|
|
mp_asm_base_data(&emit->as->base, 1, 0x80 | ((emit->n_state >> 7) & 0x7f));
|
|
mp_asm_base_data(&emit->as->base, 1, emit->n_state & 0x7f);
|
|
mp_asm_base_data(&emit->as->base, 1, 0); // n_exc_stack
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->scope_flags);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->num_pos_args);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->num_kwonly_args);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->num_def_pos_args);
|
|
|
|
// write code info
|
|
#if MICROPY_PERSISTENT_CODE
|
|
mp_asm_base_data(&emit->as->base, 1, 5);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->simple_name);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->simple_name >> 8);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->source_file);
|
|
mp_asm_base_data(&emit->as->base, 1, emit->scope->source_file >> 8);
|
|
#else
|
|
mp_asm_base_data(&emit->as->base, 1, 1);
|
|
#endif
|
|
|
|
// bytecode prelude: initialise closed over variables
|
|
for (int i = 0; i < emit->scope->id_info_len; i++) {
|
|
id_info_t *id = &emit->scope->id_info[i];
|
|
if (id->kind == ID_INFO_KIND_CELL) {
|
|
assert(id->local_num < 255);
|
|
mp_asm_base_data(&emit->as->base, 1, id->local_num); // write the local which should be converted to a cell
|
|
}
|
|
}
|
|
mp_asm_base_data(&emit->as->base, 1, 255); // end of list sentinel
|
|
}
|
|
|
|
ASM_END_PASS(emit->as);
|
|
|
|
// check stack is back to zero size
|
|
assert(emit->stack_size == 0);
|
|
assert(emit->exc_stack_size == 0);
|
|
|
|
// Deal with const table accounting
|
|
assert(emit->pass <= MP_PASS_STACK_SIZE || (emit->const_table_num_obj == emit->const_table_cur_obj));
|
|
emit->const_table_num_obj = emit->const_table_cur_obj;
|
|
if (emit->pass == MP_PASS_CODE_SIZE) {
|
|
size_t const_table_alloc = emit->const_table_num_obj + emit->const_table_cur_raw_code;
|
|
size_t nqstr = 0;
|
|
if (!emit->do_viper_types) {
|
|
// Add room for qstr names of arguments
|
|
nqstr = emit->scope->num_pos_args + emit->scope->num_kwonly_args;
|
|
const_table_alloc += nqstr;
|
|
}
|
|
emit->const_table = m_new(mp_uint_t, const_table_alloc);
|
|
// Store mp_fun_table pointer just after qstrs
|
|
emit->const_table[nqstr] = (mp_uint_t)(uintptr_t)mp_fun_table;
|
|
}
|
|
|
|
if (emit->pass == MP_PASS_EMIT) {
|
|
void *f = mp_asm_base_get_code(&emit->as->base);
|
|
mp_uint_t f_len = mp_asm_base_get_code_size(&emit->as->base);
|
|
|
|
mp_emit_glue_assign_native(emit->scope->raw_code,
|
|
emit->do_viper_types ? MP_CODE_NATIVE_VIPER : MP_CODE_NATIVE_PY,
|
|
f, f_len, emit->const_table,
|
|
emit->scope->num_pos_args, emit->scope->scope_flags, 0);
|
|
}
|
|
}
|
|
|
|
STATIC bool emit_native_last_emit_was_return_value(emit_t *emit) {
|
|
return emit->last_emit_was_return_value;
|
|
}
|
|
|
|
STATIC void ensure_extra_stack(emit_t *emit, size_t delta) {
|
|
if (emit->stack_size + delta > emit->stack_info_alloc) {
|
|
size_t new_alloc = (emit->stack_size + delta + 8) & ~3;
|
|
emit->stack_info = m_renew(stack_info_t, emit->stack_info, emit->stack_info_alloc, new_alloc);
|
|
emit->stack_info_alloc = new_alloc;
|
|
}
|
|
}
|
|
|
|
STATIC void adjust_stack(emit_t *emit, mp_int_t stack_size_delta) {
|
|
assert((mp_int_t)emit->stack_size + stack_size_delta >= 0);
|
|
assert((mp_int_t)emit->stack_size + stack_size_delta <= (mp_int_t)emit->stack_info_alloc);
|
|
emit->stack_size += stack_size_delta;
|
|
if (emit->pass > MP_PASS_SCOPE && emit->stack_size > emit->scope->stack_size) {
|
|
emit->scope->stack_size = emit->stack_size;
|
|
}
|
|
#ifdef DEBUG_PRINT
|
|
DEBUG_printf(" adjust_stack; stack_size=%d+%d; stack now:", emit->stack_size - stack_size_delta, stack_size_delta);
|
|
for (int i = 0; i < emit->stack_size; i++) {
|
|
stack_info_t *si = &emit->stack_info[i];
|
|
DEBUG_printf(" (v=%d k=%d %d)", si->vtype, si->kind, si->data.u_reg);
|
|
}
|
|
DEBUG_printf("\n");
|
|
#endif
|
|
}
|
|
|
|
STATIC void emit_native_adjust_stack_size(emit_t *emit, mp_int_t delta) {
|
|
DEBUG_printf("adjust_stack_size(" INT_FMT ")\n", delta);
|
|
if (delta > 0) {
|
|
ensure_extra_stack(emit, delta);
|
|
}
|
|
// If we are adjusting the stack in a positive direction (pushing) then we
|
|
// need to fill in values for the stack kind and vtype of the newly-pushed
|
|
// entries. These should be set to "value" (ie not reg or imm) because we
|
|
// should only need to adjust the stack due to a jump to this part in the
|
|
// code (and hence we have settled the stack before the jump).
|
|
for (mp_int_t i = 0; i < delta; i++) {
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size + i];
|
|
si->kind = STACK_VALUE;
|
|
// TODO we don't know the vtype to use here. At the moment this is a
|
|
// hack to get the case of multi comparison working.
|
|
if (delta == 1) {
|
|
si->vtype = emit->saved_stack_vtype;
|
|
} else {
|
|
si->vtype = VTYPE_PYOBJ;
|
|
}
|
|
}
|
|
adjust_stack(emit, delta);
|
|
}
|
|
|
|
STATIC void emit_native_set_source_line(emit_t *emit, mp_uint_t source_line) {
|
|
(void)emit;
|
|
(void)source_line;
|
|
}
|
|
|
|
// this must be called at start of emit functions
|
|
STATIC void emit_native_pre(emit_t *emit) {
|
|
emit->last_emit_was_return_value = false;
|
|
}
|
|
|
|
// depth==0 is top, depth==1 is before top, etc
|
|
STATIC stack_info_t *peek_stack(emit_t *emit, mp_uint_t depth) {
|
|
return &emit->stack_info[emit->stack_size - 1 - depth];
|
|
}
|
|
|
|
// depth==0 is top, depth==1 is before top, etc
|
|
STATIC vtype_kind_t peek_vtype(emit_t *emit, mp_uint_t depth) {
|
|
if (emit->do_viper_types) {
|
|
return peek_stack(emit, depth)->vtype;
|
|
} else {
|
|
// Type is always PYOBJ even if the intermediate stored value is not
|
|
return VTYPE_PYOBJ;
|
|
}
|
|
}
|
|
|
|
// pos=1 is TOS, pos=2 is next, etc
|
|
// use pos=0 for no skipping
|
|
STATIC void need_reg_single(emit_t *emit, int reg_needed, int skip_stack_pos) {
|
|
skip_stack_pos = emit->stack_size - skip_stack_pos;
|
|
for (int i = 0; i < emit->stack_size; i++) {
|
|
if (i != skip_stack_pos) {
|
|
stack_info_t *si = &emit->stack_info[i];
|
|
if (si->kind == STACK_REG && si->data.u_reg == reg_needed) {
|
|
si->kind = STACK_VALUE;
|
|
emit_native_mov_state_reg(emit, emit->stack_start + i, si->data.u_reg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
STATIC void need_reg_all(emit_t *emit) {
|
|
for (int i = 0; i < emit->stack_size; i++) {
|
|
stack_info_t *si = &emit->stack_info[i];
|
|
if (si->kind == STACK_REG) {
|
|
si->kind = STACK_VALUE;
|
|
emit_native_mov_state_reg(emit, emit->stack_start + i, si->data.u_reg);
|
|
}
|
|
}
|
|
}
|
|
|
|
STATIC vtype_kind_t load_reg_stack_imm(emit_t *emit, int reg_dest, const stack_info_t *si, bool convert_to_pyobj) {
|
|
if (!convert_to_pyobj && emit->do_viper_types) {
|
|
ASM_MOV_REG_IMM(emit->as, reg_dest, si->data.u_imm);
|
|
return si->vtype;
|
|
} else {
|
|
if (si->vtype == VTYPE_PYOBJ) {
|
|
ASM_MOV_REG_IMM(emit->as, reg_dest, si->data.u_imm);
|
|
} else if (si->vtype == VTYPE_BOOL) {
|
|
emit_native_mov_reg_const(emit, reg_dest, MP_F_CONST_FALSE_OBJ + si->data.u_imm);
|
|
} else if (si->vtype == VTYPE_INT || si->vtype == VTYPE_UINT) {
|
|
ASM_MOV_REG_IMM(emit->as, reg_dest, (uintptr_t)MP_OBJ_NEW_SMALL_INT(si->data.u_imm));
|
|
} else if (si->vtype == VTYPE_PTR_NONE) {
|
|
emit_native_mov_reg_const(emit, reg_dest, MP_F_CONST_NONE_OBJ);
|
|
} else {
|
|
mp_raise_NotImplementedError("conversion to object");
|
|
}
|
|
return VTYPE_PYOBJ;
|
|
}
|
|
}
|
|
|
|
STATIC void need_stack_settled(emit_t *emit) {
|
|
DEBUG_printf(" need_stack_settled; stack_size=%d\n", emit->stack_size);
|
|
for (int i = 0; i < emit->stack_size; i++) {
|
|
stack_info_t *si = &emit->stack_info[i];
|
|
if (si->kind == STACK_REG) {
|
|
DEBUG_printf(" reg(%u) to local(%u)\n", si->data.u_reg, emit->stack_start + i);
|
|
si->kind = STACK_VALUE;
|
|
emit_native_mov_state_reg(emit, emit->stack_start + i, si->data.u_reg);
|
|
}
|
|
}
|
|
for (int i = 0; i < emit->stack_size; i++) {
|
|
stack_info_t *si = &emit->stack_info[i];
|
|
if (si->kind == STACK_IMM) {
|
|
DEBUG_printf(" imm(" INT_FMT ") to local(%u)\n", si->data.u_imm, emit->stack_start + i);
|
|
si->kind = STACK_VALUE;
|
|
si->vtype = load_reg_stack_imm(emit, REG_TEMP0, si, false);
|
|
emit_native_mov_state_reg(emit, emit->stack_start + i, REG_TEMP0);
|
|
}
|
|
}
|
|
}
|
|
|
|
// pos=1 is TOS, pos=2 is next, etc
|
|
STATIC void emit_access_stack(emit_t *emit, int pos, vtype_kind_t *vtype, int reg_dest) {
|
|
need_reg_single(emit, reg_dest, pos);
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size - pos];
|
|
*vtype = si->vtype;
|
|
switch (si->kind) {
|
|
case STACK_VALUE:
|
|
emit_native_mov_reg_state(emit, reg_dest, emit->stack_start + emit->stack_size - pos);
|
|
break;
|
|
|
|
case STACK_REG:
|
|
if (si->data.u_reg != reg_dest) {
|
|
ASM_MOV_REG_REG(emit->as, reg_dest, si->data.u_reg);
|
|
}
|
|
break;
|
|
|
|
case STACK_IMM:
|
|
*vtype = load_reg_stack_imm(emit, reg_dest, si, false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// does an efficient X=pop(); discard(); push(X)
|
|
// needs a (non-temp) register in case the poped element was stored in the stack
|
|
STATIC void emit_fold_stack_top(emit_t *emit, int reg_dest) {
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size - 2];
|
|
si[0] = si[1];
|
|
if (si->kind == STACK_VALUE) {
|
|
// if folded element was on the stack we need to put it in a register
|
|
emit_native_mov_reg_state(emit, reg_dest, emit->stack_start + emit->stack_size - 1);
|
|
si->kind = STACK_REG;
|
|
si->data.u_reg = reg_dest;
|
|
}
|
|
adjust_stack(emit, -1);
|
|
}
|
|
|
|
// If stacked value is in a register and the register is not r1 or r2, then
|
|
// *reg_dest is set to that register. Otherwise the value is put in *reg_dest.
|
|
STATIC void emit_pre_pop_reg_flexible(emit_t *emit, vtype_kind_t *vtype, int *reg_dest, int not_r1, int not_r2) {
|
|
emit->last_emit_was_return_value = false;
|
|
stack_info_t *si = peek_stack(emit, 0);
|
|
if (si->kind == STACK_REG && si->data.u_reg != not_r1 && si->data.u_reg != not_r2) {
|
|
*vtype = si->vtype;
|
|
*reg_dest = si->data.u_reg;
|
|
need_reg_single(emit, *reg_dest, 1);
|
|
} else {
|
|
emit_access_stack(emit, 1, vtype, *reg_dest);
|
|
}
|
|
adjust_stack(emit, -1);
|
|
}
|
|
|
|
STATIC void emit_pre_pop_discard(emit_t *emit) {
|
|
emit->last_emit_was_return_value = false;
|
|
adjust_stack(emit, -1);
|
|
}
|
|
|
|
STATIC void emit_pre_pop_reg(emit_t *emit, vtype_kind_t *vtype, int reg_dest) {
|
|
emit->last_emit_was_return_value = false;
|
|
emit_access_stack(emit, 1, vtype, reg_dest);
|
|
adjust_stack(emit, -1);
|
|
}
|
|
|
|
STATIC void emit_pre_pop_reg_reg(emit_t *emit, vtype_kind_t *vtypea, int rega, vtype_kind_t *vtypeb, int regb) {
|
|
emit_pre_pop_reg(emit, vtypea, rega);
|
|
emit_pre_pop_reg(emit, vtypeb, regb);
|
|
}
|
|
|
|
STATIC void emit_pre_pop_reg_reg_reg(emit_t *emit, vtype_kind_t *vtypea, int rega, vtype_kind_t *vtypeb, int regb, vtype_kind_t *vtypec, int regc) {
|
|
emit_pre_pop_reg(emit, vtypea, rega);
|
|
emit_pre_pop_reg(emit, vtypeb, regb);
|
|
emit_pre_pop_reg(emit, vtypec, regc);
|
|
}
|
|
|
|
STATIC void emit_post(emit_t *emit) {
|
|
(void)emit;
|
|
}
|
|
|
|
STATIC void emit_post_top_set_vtype(emit_t *emit, vtype_kind_t new_vtype) {
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size - 1];
|
|
si->vtype = new_vtype;
|
|
}
|
|
|
|
STATIC void emit_post_push_reg(emit_t *emit, vtype_kind_t vtype, int reg) {
|
|
ensure_extra_stack(emit, 1);
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size];
|
|
si->vtype = vtype;
|
|
si->kind = STACK_REG;
|
|
si->data.u_reg = reg;
|
|
adjust_stack(emit, 1);
|
|
}
|
|
|
|
STATIC void emit_post_push_imm(emit_t *emit, vtype_kind_t vtype, mp_int_t imm) {
|
|
ensure_extra_stack(emit, 1);
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size];
|
|
si->vtype = vtype;
|
|
si->kind = STACK_IMM;
|
|
si->data.u_imm = imm;
|
|
adjust_stack(emit, 1);
|
|
}
|
|
|
|
STATIC void emit_post_push_reg_reg(emit_t *emit, vtype_kind_t vtypea, int rega, vtype_kind_t vtypeb, int regb) {
|
|
emit_post_push_reg(emit, vtypea, rega);
|
|
emit_post_push_reg(emit, vtypeb, regb);
|
|
}
|
|
|
|
STATIC void emit_post_push_reg_reg_reg(emit_t *emit, vtype_kind_t vtypea, int rega, vtype_kind_t vtypeb, int regb, vtype_kind_t vtypec, int regc) {
|
|
emit_post_push_reg(emit, vtypea, rega);
|
|
emit_post_push_reg(emit, vtypeb, regb);
|
|
emit_post_push_reg(emit, vtypec, regc);
|
|
}
|
|
|
|
STATIC void emit_post_push_reg_reg_reg_reg(emit_t *emit, vtype_kind_t vtypea, int rega, vtype_kind_t vtypeb, int regb, vtype_kind_t vtypec, int regc, vtype_kind_t vtyped, int regd) {
|
|
emit_post_push_reg(emit, vtypea, rega);
|
|
emit_post_push_reg(emit, vtypeb, regb);
|
|
emit_post_push_reg(emit, vtypec, regc);
|
|
emit_post_push_reg(emit, vtyped, regd);
|
|
}
|
|
|
|
STATIC void emit_call(emit_t *emit, mp_fun_kind_t fun_kind) {
|
|
need_reg_all(emit);
|
|
ASM_CALL_IND(emit->as, fun_kind);
|
|
}
|
|
|
|
STATIC void emit_call_with_imm_arg(emit_t *emit, mp_fun_kind_t fun_kind, mp_int_t arg_val, int arg_reg) {
|
|
need_reg_all(emit);
|
|
ASM_MOV_REG_IMM(emit->as, arg_reg, arg_val);
|
|
ASM_CALL_IND(emit->as, fun_kind);
|
|
}
|
|
|
|
STATIC void emit_call_with_2_imm_args(emit_t *emit, mp_fun_kind_t fun_kind, mp_int_t arg_val1, int arg_reg1, mp_int_t arg_val2, int arg_reg2) {
|
|
need_reg_all(emit);
|
|
ASM_MOV_REG_IMM(emit->as, arg_reg1, arg_val1);
|
|
ASM_MOV_REG_IMM(emit->as, arg_reg2, arg_val2);
|
|
ASM_CALL_IND(emit->as, fun_kind);
|
|
}
|
|
|
|
// vtype of all n_pop objects is VTYPE_PYOBJ
|
|
// Will convert any items that are not VTYPE_PYOBJ to this type and put them back on the stack.
|
|
// If any conversions of non-immediate values are needed, then it uses REG_ARG_1, REG_ARG_2 and REG_RET.
|
|
// Otherwise, it does not use any temporary registers (but may use reg_dest before loading it with stack pointer).
|
|
STATIC void emit_get_stack_pointer_to_reg_for_pop(emit_t *emit, mp_uint_t reg_dest, mp_uint_t n_pop) {
|
|
need_reg_all(emit);
|
|
|
|
// First, store any immediate values to their respective place on the stack.
|
|
for (mp_uint_t i = 0; i < n_pop; i++) {
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size - 1 - i];
|
|
// must push any imm's to stack
|
|
// must convert them to VTYPE_PYOBJ for viper code
|
|
if (si->kind == STACK_IMM) {
|
|
si->kind = STACK_VALUE;
|
|
si->vtype = load_reg_stack_imm(emit, reg_dest, si, true);
|
|
emit_native_mov_state_reg(emit, emit->stack_start + emit->stack_size - 1 - i, reg_dest);
|
|
}
|
|
|
|
// verify that this value is on the stack
|
|
assert(si->kind == STACK_VALUE);
|
|
}
|
|
|
|
// Second, convert any non-VTYPE_PYOBJ to that type.
|
|
for (mp_uint_t i = 0; i < n_pop; i++) {
|
|
stack_info_t *si = &emit->stack_info[emit->stack_size - 1 - i];
|
|
if (si->vtype != VTYPE_PYOBJ) {
|
|
mp_uint_t local_num = emit->stack_start + emit->stack_size - 1 - i;
|
|
emit_native_mov_reg_state(emit, REG_ARG_1, local_num);
|
|
emit_call_with_imm_arg(emit, MP_F_CONVERT_NATIVE_TO_OBJ, si->vtype, REG_ARG_2); // arg2 = type
|
|
emit_native_mov_state_reg(emit, local_num, REG_RET);
|
|
si->vtype = VTYPE_PYOBJ;
|
|
DEBUG_printf(" convert_native_to_obj(local_num=" UINT_FMT ")\n", local_num);
|
|
}
|
|
}
|
|
|
|
// Adujust the stack for a pop of n_pop items, and load the stack pointer into reg_dest.
|
|
adjust_stack(emit, -n_pop);
|
|
emit_native_mov_reg_state_addr(emit, reg_dest, emit->stack_start + emit->stack_size);
|
|
}
|
|
|
|
// vtype of all n_push objects is VTYPE_PYOBJ
|
|
STATIC void emit_get_stack_pointer_to_reg_for_push(emit_t *emit, mp_uint_t reg_dest, mp_uint_t n_push) {
|
|
need_reg_all(emit);
|
|
ensure_extra_stack(emit, n_push);
|
|
for (mp_uint_t i = 0; i < n_push; i++) {
|
|
emit->stack_info[emit->stack_size + i].kind = STACK_VALUE;
|
|
emit->stack_info[emit->stack_size + i].vtype = VTYPE_PYOBJ;
|
|
}
|
|
emit_native_mov_reg_state_addr(emit, reg_dest, emit->stack_start + emit->stack_size);
|
|
adjust_stack(emit, n_push);
|
|
}
|
|
|
|
STATIC void emit_native_push_exc_stack(emit_t *emit, uint label, bool is_finally) {
|
|
if (emit->exc_stack_size + 1 > emit->exc_stack_alloc) {
|
|
size_t new_alloc = emit->exc_stack_alloc + 4;
|
|
emit->exc_stack = m_renew(exc_stack_entry_t, emit->exc_stack, emit->exc_stack_alloc, new_alloc);
|
|
emit->exc_stack_alloc = new_alloc;
|
|
}
|
|
|
|
exc_stack_entry_t *e = &emit->exc_stack[emit->exc_stack_size++];
|
|
e->label = label;
|
|
e->is_finally = is_finally;
|
|
e->unwind_label = UNWIND_LABEL_UNUSED;
|
|
e->is_active = true;
|
|
|
|
ASM_MOV_REG_PCREL(emit->as, REG_RET, label);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_PC(emit), REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_leave_exc_stack(emit_t *emit, bool start_of_handler) {
|
|
assert(emit->exc_stack_size > 0);
|
|
|
|
// Get current exception handler and deactivate it
|
|
exc_stack_entry_t *e = &emit->exc_stack[emit->exc_stack_size - 1];
|
|
e->is_active = false;
|
|
|
|
// Find next innermost active exception handler, to restore as current handler
|
|
for (--e; e >= emit->exc_stack && !e->is_active; --e) {
|
|
}
|
|
|
|
// Update the PC of the new exception handler
|
|
if (e < emit->exc_stack) {
|
|
// No active handler, clear handler PC to zero
|
|
if (start_of_handler) {
|
|
// Optimisation: PC is already cleared by global exc handler
|
|
return;
|
|
}
|
|
ASM_XOR_REG_REG(emit->as, REG_RET, REG_RET);
|
|
} else {
|
|
// Found new active handler, get its PC
|
|
ASM_MOV_REG_PCREL(emit->as, REG_RET, e->label);
|
|
}
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_PC(emit), REG_RET);
|
|
}
|
|
|
|
STATIC exc_stack_entry_t *emit_native_pop_exc_stack(emit_t *emit) {
|
|
assert(emit->exc_stack_size > 0);
|
|
exc_stack_entry_t *e = &emit->exc_stack[--emit->exc_stack_size];
|
|
assert(e->is_active == false);
|
|
return e;
|
|
}
|
|
|
|
STATIC void emit_load_reg_with_ptr(emit_t *emit, int reg, mp_uint_t ptr, size_t table_off) {
|
|
if (!emit->do_viper_types) {
|
|
// Skip qstr names of arguments
|
|
table_off += emit->scope->num_pos_args + emit->scope->num_kwonly_args;
|
|
}
|
|
if (emit->pass == MP_PASS_EMIT) {
|
|
emit->const_table[table_off] = ptr;
|
|
}
|
|
emit_native_mov_reg_state(emit, REG_TEMP0, LOCAL_IDX_FUN_OBJ(emit));
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_TEMP0, REG_TEMP0, offsetof(mp_obj_fun_bc_t, const_table) / sizeof(uintptr_t));
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, reg, REG_TEMP0, table_off);
|
|
}
|
|
|
|
STATIC void emit_load_reg_with_object(emit_t *emit, int reg, mp_obj_t obj) {
|
|
size_t table_off = emit->const_table_cur_obj++;
|
|
emit_load_reg_with_ptr(emit, reg, (mp_uint_t)obj, table_off);
|
|
}
|
|
|
|
STATIC void emit_load_reg_with_raw_code(emit_t *emit, int reg, mp_raw_code_t *rc) {
|
|
size_t table_off = emit->const_table_num_obj + emit->const_table_cur_raw_code++;
|
|
emit_load_reg_with_ptr(emit, reg, (mp_uint_t)rc, table_off);
|
|
}
|
|
|
|
STATIC void emit_native_label_assign(emit_t *emit, mp_uint_t l) {
|
|
DEBUG_printf("label_assign(" UINT_FMT ")\n", l);
|
|
|
|
bool is_finally = false;
|
|
if (emit->exc_stack_size > 0) {
|
|
exc_stack_entry_t *e = &emit->exc_stack[emit->exc_stack_size - 1];
|
|
is_finally = e->is_finally && e->label == l;
|
|
}
|
|
|
|
if (is_finally) {
|
|
// Label is at start of finally handler: store TOS into exception slot
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, REG_TEMP0);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_VAL(emit), REG_TEMP0);
|
|
}
|
|
|
|
emit_native_pre(emit);
|
|
// need to commit stack because we can jump here from elsewhere
|
|
need_stack_settled(emit);
|
|
mp_asm_base_label_assign(&emit->as->base, l);
|
|
emit_post(emit);
|
|
|
|
if (is_finally) {
|
|
// Label is at start of finally handler: pop exception stack
|
|
emit_native_leave_exc_stack(emit, false);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_global_exc_entry(emit_t *emit) {
|
|
// Note: 4 labels are reserved for this function, starting at *emit->label_slot
|
|
|
|
emit->exit_label = *emit->label_slot;
|
|
|
|
if (NEED_GLOBAL_EXC_HANDLER(emit)) {
|
|
mp_uint_t nlr_label = *emit->label_slot + 1;
|
|
mp_uint_t start_label = *emit->label_slot + 2;
|
|
mp_uint_t global_except_label = *emit->label_slot + 3;
|
|
|
|
if (!(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR)) {
|
|
// Set new globals
|
|
emit_native_mov_reg_state(emit, REG_ARG_1, LOCAL_IDX_FUN_OBJ(emit));
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_ARG_1, REG_ARG_1, offsetof(mp_obj_fun_bc_t, globals) / sizeof(uintptr_t));
|
|
emit_call(emit, MP_F_NATIVE_SWAP_GLOBALS);
|
|
|
|
// Save old globals (or NULL if globals didn't change)
|
|
emit_native_mov_state_reg(emit, LOCAL_IDX_OLD_GLOBALS(emit), REG_RET);
|
|
}
|
|
|
|
if (emit->scope->exc_stack_size == 0) {
|
|
if (!(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR)) {
|
|
// Optimisation: if globals didn't change don't push the nlr context
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_RET, start_label, false);
|
|
}
|
|
|
|
// Wrap everything in an nlr context
|
|
ASM_MOV_REG_LOCAL_ADDR(emit->as, REG_ARG_1, 0);
|
|
emit_call(emit, MP_F_NLR_PUSH);
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_RET, start_label, true);
|
|
} else {
|
|
// Clear the unwind state
|
|
ASM_XOR_REG_REG(emit->as, REG_TEMP0, REG_TEMP0);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_UNWIND(emit), REG_TEMP0);
|
|
|
|
// Put PC of start code block into REG_LOCAL_1
|
|
ASM_MOV_REG_PCREL(emit->as, REG_LOCAL_1, start_label);
|
|
|
|
// Wrap everything in an nlr context
|
|
emit_native_label_assign(emit, nlr_label);
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_LOCAL_2, LOCAL_IDX_EXC_HANDLER_UNWIND(emit));
|
|
ASM_MOV_REG_LOCAL_ADDR(emit->as, REG_ARG_1, 0);
|
|
emit_call(emit, MP_F_NLR_PUSH);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_UNWIND(emit), REG_LOCAL_2);
|
|
ASM_JUMP_IF_REG_NONZERO(emit->as, REG_RET, global_except_label, true);
|
|
|
|
// Clear PC of current code block, and jump there to resume execution
|
|
ASM_XOR_REG_REG(emit->as, REG_TEMP0, REG_TEMP0);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_PC(emit), REG_TEMP0);
|
|
ASM_JUMP_REG(emit->as, REG_LOCAL_1);
|
|
|
|
// Global exception handler: check for valid exception handler
|
|
emit_native_label_assign(emit, global_except_label);
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_LOCAL_1, LOCAL_IDX_EXC_HANDLER_PC(emit));
|
|
ASM_JUMP_IF_REG_NONZERO(emit->as, REG_LOCAL_1, nlr_label, false);
|
|
}
|
|
|
|
if (!(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR)) {
|
|
// Restore old globals
|
|
emit_native_mov_reg_state(emit, REG_ARG_1, LOCAL_IDX_OLD_GLOBALS(emit));
|
|
emit_call(emit, MP_F_NATIVE_SWAP_GLOBALS);
|
|
}
|
|
|
|
if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
|
|
// Store return value in state[0]
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_TEMP0, LOCAL_IDX_EXC_VAL(emit));
|
|
ASM_STORE_REG_REG_OFFSET(emit->as, REG_TEMP0, REG_GENERATOR_STATE, offsetof(mp_code_state_t, state) / sizeof(uintptr_t));
|
|
|
|
// Load return kind
|
|
ASM_MOV_REG_IMM(emit->as, REG_RET, MP_VM_RETURN_EXCEPTION);
|
|
|
|
ASM_EXIT(emit->as);
|
|
} else {
|
|
// Re-raise exception out to caller
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_ARG_1, LOCAL_IDX_EXC_VAL(emit));
|
|
emit_call(emit, MP_F_NATIVE_RAISE);
|
|
}
|
|
|
|
// Label for start of function
|
|
emit_native_label_assign(emit, start_label);
|
|
|
|
if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
|
|
emit_native_mov_reg_state(emit, REG_TEMP0, LOCAL_IDX_GEN_PC(emit));
|
|
ASM_JUMP_REG(emit->as, REG_TEMP0);
|
|
emit->start_offset = mp_asm_base_get_code_pos(&emit->as->base);
|
|
|
|
// This is the first entry of the generator
|
|
|
|
// Check LOCAL_IDX_EXC_VAL for any injected value
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_ARG_1, LOCAL_IDX_EXC_VAL(emit));
|
|
emit_call(emit, MP_F_NATIVE_RAISE);
|
|
}
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_global_exc_exit(emit_t *emit) {
|
|
// Label for end of function
|
|
emit_native_label_assign(emit, emit->exit_label);
|
|
|
|
if (NEED_GLOBAL_EXC_HANDLER(emit)) {
|
|
// Get old globals
|
|
if (!(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR)) {
|
|
emit_native_mov_reg_state(emit, REG_ARG_1, LOCAL_IDX_OLD_GLOBALS(emit));
|
|
|
|
if (emit->scope->exc_stack_size == 0) {
|
|
// Optimisation: if globals didn't change then don't restore them and don't do nlr_pop
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_ARG_1, emit->exit_label + 1, false);
|
|
}
|
|
|
|
// Restore old globals
|
|
emit_call(emit, MP_F_NATIVE_SWAP_GLOBALS);
|
|
}
|
|
|
|
// Pop the nlr context
|
|
emit_call(emit, MP_F_NLR_POP);
|
|
|
|
if (!(emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR)) {
|
|
if (emit->scope->exc_stack_size == 0) {
|
|
// Destination label for above optimisation
|
|
emit_native_label_assign(emit, emit->exit_label + 1);
|
|
}
|
|
}
|
|
|
|
// Load return value
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_RET, LOCAL_IDX_RET_VAL(emit));
|
|
}
|
|
|
|
ASM_EXIT(emit->as);
|
|
}
|
|
|
|
STATIC void emit_native_import_name(emit_t *emit, qstr qst) {
|
|
DEBUG_printf("import_name %s\n", qstr_str(qst));
|
|
|
|
// get arguments from stack: arg2 = fromlist, arg3 = level
|
|
// If using viper types these arguments must be converted to proper objects, and
|
|
// to accomplish this viper types are turned off for the emit_pre_pop_reg_reg call.
|
|
bool orig_do_viper_types = emit->do_viper_types;
|
|
emit->do_viper_types = false;
|
|
vtype_kind_t vtype_fromlist;
|
|
vtype_kind_t vtype_level;
|
|
emit_pre_pop_reg_reg(emit, &vtype_fromlist, REG_ARG_2, &vtype_level, REG_ARG_3);
|
|
assert(vtype_fromlist == VTYPE_PYOBJ);
|
|
assert(vtype_level == VTYPE_PYOBJ);
|
|
emit->do_viper_types = orig_do_viper_types;
|
|
|
|
emit_call_with_imm_arg(emit, MP_F_IMPORT_NAME, qst, REG_ARG_1); // arg1 = import name
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_import_from(emit_t *emit, qstr qst) {
|
|
DEBUG_printf("import_from %s\n", qstr_str(qst));
|
|
emit_native_pre(emit);
|
|
vtype_kind_t vtype_module;
|
|
emit_access_stack(emit, 1, &vtype_module, REG_ARG_1); // arg1 = module
|
|
assert(vtype_module == VTYPE_PYOBJ);
|
|
emit_call_with_imm_arg(emit, MP_F_IMPORT_FROM, qst, REG_ARG_2); // arg2 = import name
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_import_star(emit_t *emit) {
|
|
DEBUG_printf("import_star\n");
|
|
vtype_kind_t vtype_module;
|
|
emit_pre_pop_reg(emit, &vtype_module, REG_ARG_1); // arg1 = module
|
|
assert(vtype_module == VTYPE_PYOBJ);
|
|
emit_call(emit, MP_F_IMPORT_ALL);
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_import(emit_t *emit, qstr qst, int kind) {
|
|
if (kind == MP_EMIT_IMPORT_NAME) {
|
|
emit_native_import_name(emit, qst);
|
|
} else if (kind == MP_EMIT_IMPORT_FROM) {
|
|
emit_native_import_from(emit, qst);
|
|
} else {
|
|
emit_native_import_star(emit);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_load_const_tok(emit_t *emit, mp_token_kind_t tok) {
|
|
DEBUG_printf("load_const_tok(tok=%u)\n", tok);
|
|
if (tok == MP_TOKEN_ELLIPSIS) {
|
|
emit_post_push_imm(emit, VTYPE_PYOBJ, (mp_uint_t)MP_OBJ_FROM_PTR(&mp_const_ellipsis_obj));
|
|
} else {
|
|
emit_native_pre(emit);
|
|
if (tok == MP_TOKEN_KW_NONE) {
|
|
emit_post_push_imm(emit, VTYPE_PTR_NONE, 0);
|
|
} else {
|
|
emit_post_push_imm(emit, VTYPE_BOOL, tok == MP_TOKEN_KW_FALSE ? 0 : 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_load_const_small_int(emit_t *emit, mp_int_t arg) {
|
|
DEBUG_printf("load_const_small_int(int=" INT_FMT ")\n", arg);
|
|
emit_native_pre(emit);
|
|
emit_post_push_imm(emit, VTYPE_INT, arg);
|
|
}
|
|
|
|
STATIC void emit_native_load_const_str(emit_t *emit, qstr qst) {
|
|
emit_native_pre(emit);
|
|
// TODO: Eventually we want to be able to work with raw pointers in viper to
|
|
// do native array access. For now we just load them as any other object.
|
|
/*
|
|
if (emit->do_viper_types) {
|
|
// load a pointer to the asciiz string?
|
|
emit_post_push_imm(emit, VTYPE_PTR, (mp_uint_t)qstr_str(qst));
|
|
} else
|
|
*/
|
|
{
|
|
emit_post_push_imm(emit, VTYPE_PYOBJ, (mp_uint_t)MP_OBJ_NEW_QSTR(qst));
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_load_const_obj(emit_t *emit, mp_obj_t obj) {
|
|
emit_native_pre(emit);
|
|
need_reg_single(emit, REG_RET, 0);
|
|
emit_load_reg_with_object(emit, REG_RET, obj);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_load_null(emit_t *emit) {
|
|
emit_native_pre(emit);
|
|
emit_post_push_imm(emit, VTYPE_PYOBJ, 0);
|
|
}
|
|
|
|
STATIC void emit_native_load_fast(emit_t *emit, qstr qst, mp_uint_t local_num) {
|
|
DEBUG_printf("load_fast(%s, " UINT_FMT ")\n", qstr_str(qst), local_num);
|
|
vtype_kind_t vtype = emit->local_vtype[local_num];
|
|
if (vtype == VTYPE_UNBOUND) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit, "local '%q' used before type known", qst);
|
|
}
|
|
emit_native_pre(emit);
|
|
if (local_num < REG_LOCAL_NUM && CAN_USE_REGS_FOR_LOCALS(emit)) {
|
|
emit_post_push_reg(emit, vtype, reg_local_table[local_num]);
|
|
} else {
|
|
need_reg_single(emit, REG_TEMP0, 0);
|
|
emit_native_mov_reg_state(emit, REG_TEMP0, LOCAL_IDX_LOCAL_VAR(emit, local_num));
|
|
emit_post_push_reg(emit, vtype, REG_TEMP0);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_load_deref(emit_t *emit, qstr qst, mp_uint_t local_num) {
|
|
DEBUG_printf("load_deref(%s, " UINT_FMT ")\n", qstr_str(qst), local_num);
|
|
need_reg_single(emit, REG_RET, 0);
|
|
emit_native_load_fast(emit, qst, local_num);
|
|
vtype_kind_t vtype;
|
|
int reg_base = REG_RET;
|
|
emit_pre_pop_reg_flexible(emit, &vtype, ®_base, -1, -1);
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_RET, reg_base, 1);
|
|
// closed over vars are always Python objects
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_load_local(emit_t *emit, qstr qst, mp_uint_t local_num, int kind) {
|
|
if (kind == MP_EMIT_IDOP_LOCAL_FAST) {
|
|
emit_native_load_fast(emit, qst, local_num);
|
|
} else {
|
|
emit_native_load_deref(emit, qst, local_num);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_load_global(emit_t *emit, qstr qst, int kind) {
|
|
MP_STATIC_ASSERT(MP_F_LOAD_NAME + MP_EMIT_IDOP_GLOBAL_NAME == MP_F_LOAD_NAME);
|
|
MP_STATIC_ASSERT(MP_F_LOAD_NAME + MP_EMIT_IDOP_GLOBAL_GLOBAL == MP_F_LOAD_GLOBAL);
|
|
emit_native_pre(emit);
|
|
if (kind == MP_EMIT_IDOP_GLOBAL_NAME) {
|
|
DEBUG_printf("load_name(%s)\n", qstr_str(qst));
|
|
} else {
|
|
DEBUG_printf("load_global(%s)\n", qstr_str(qst));
|
|
if (emit->do_viper_types) {
|
|
// check for builtin casting operators
|
|
int native_type = mp_native_type_from_qstr(qst);
|
|
if (native_type >= MP_NATIVE_TYPE_INT) {
|
|
emit_post_push_imm(emit, VTYPE_BUILTIN_CAST, native_type);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
emit_call_with_imm_arg(emit, MP_F_LOAD_NAME + kind, qst, REG_ARG_1);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_load_attr(emit_t *emit, qstr qst) {
|
|
// depends on type of subject:
|
|
// - integer, function, pointer to integers: error
|
|
// - pointer to structure: get member, quite easy
|
|
// - Python object: call mp_load_attr, and needs to be typed to convert result
|
|
vtype_kind_t vtype_base;
|
|
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = base
|
|
assert(vtype_base == VTYPE_PYOBJ);
|
|
emit_call_with_imm_arg(emit, MP_F_LOAD_ATTR, qst, REG_ARG_2); // arg2 = attribute name
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_load_method(emit_t *emit, qstr qst, bool is_super) {
|
|
if (is_super) {
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, 3); // arg2 = dest ptr
|
|
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_2, 2); // arg2 = dest ptr
|
|
emit_call_with_imm_arg(emit, MP_F_LOAD_SUPER_METHOD, qst, REG_ARG_1); // arg1 = method name
|
|
} else {
|
|
vtype_kind_t vtype_base;
|
|
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = base
|
|
assert(vtype_base == VTYPE_PYOBJ);
|
|
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, 2); // arg3 = dest ptr
|
|
emit_call_with_imm_arg(emit, MP_F_LOAD_METHOD, qst, REG_ARG_2); // arg2 = method name
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_load_build_class(emit_t *emit) {
|
|
emit_native_pre(emit);
|
|
emit_call(emit, MP_F_LOAD_BUILD_CLASS);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_load_subscr(emit_t *emit) {
|
|
DEBUG_printf("load_subscr\n");
|
|
// need to compile: base[index]
|
|
|
|
// pop: index, base
|
|
// optimise case where index is an immediate
|
|
vtype_kind_t vtype_base = peek_vtype(emit, 1);
|
|
|
|
if (vtype_base == VTYPE_PYOBJ) {
|
|
// standard Python subscr
|
|
// TODO factor this implicit cast code with other uses of it
|
|
vtype_kind_t vtype_index = peek_vtype(emit, 0);
|
|
if (vtype_index == VTYPE_PYOBJ) {
|
|
emit_pre_pop_reg(emit, &vtype_index, REG_ARG_2);
|
|
} else {
|
|
emit_pre_pop_reg(emit, &vtype_index, REG_ARG_1);
|
|
emit_call_with_imm_arg(emit, MP_F_CONVERT_NATIVE_TO_OBJ, vtype_index, REG_ARG_2); // arg2 = type
|
|
ASM_MOV_REG_REG(emit->as, REG_ARG_2, REG_RET);
|
|
}
|
|
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1);
|
|
emit_call_with_imm_arg(emit, MP_F_OBJ_SUBSCR, (mp_uint_t)MP_OBJ_SENTINEL, REG_ARG_3);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
} else {
|
|
// viper load
|
|
// TODO The different machine architectures have very different
|
|
// capabilities and requirements for loads, so probably best to
|
|
// write a completely separate load-optimiser for each one.
|
|
stack_info_t *top = peek_stack(emit, 0);
|
|
if (top->vtype == VTYPE_INT && top->kind == STACK_IMM) {
|
|
// index is an immediate
|
|
mp_int_t index_value = top->data.u_imm;
|
|
emit_pre_pop_discard(emit); // discard index
|
|
int reg_base = REG_ARG_1;
|
|
int reg_index = REG_ARG_2;
|
|
emit_pre_pop_reg_flexible(emit, &vtype_base, ®_base, reg_index, reg_index);
|
|
switch (vtype_base) {
|
|
case VTYPE_PTR8: {
|
|
// pointer to 8-bit memory
|
|
// TODO optimise to use thumb ldrb r1, [r2, r3]
|
|
if (index_value != 0) {
|
|
// index is non-zero
|
|
#if N_THUMB
|
|
if (index_value > 0 && index_value < 32) {
|
|
asm_thumb_ldrb_rlo_rlo_i5(emit->as, REG_RET, reg_base, index_value);
|
|
break;
|
|
}
|
|
#endif
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value);
|
|
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add index to base
|
|
reg_base = reg_index;
|
|
}
|
|
ASM_LOAD8_REG_REG(emit->as, REG_RET, reg_base); // load from (base+index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR16: {
|
|
// pointer to 16-bit memory
|
|
if (index_value != 0) {
|
|
// index is a non-zero immediate
|
|
#if N_THUMB
|
|
if (index_value > 0 && index_value < 32) {
|
|
asm_thumb_ldrh_rlo_rlo_i5(emit->as, REG_RET, reg_base, index_value);
|
|
break;
|
|
}
|
|
#endif
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value << 1);
|
|
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add 2*index to base
|
|
reg_base = reg_index;
|
|
}
|
|
ASM_LOAD16_REG_REG(emit->as, REG_RET, reg_base); // load from (base+2*index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR32: {
|
|
// pointer to 32-bit memory
|
|
if (index_value != 0) {
|
|
// index is a non-zero immediate
|
|
#if N_THUMB
|
|
if (index_value > 0 && index_value < 32) {
|
|
asm_thumb_ldr_rlo_rlo_i5(emit->as, REG_RET, reg_base, index_value);
|
|
break;
|
|
}
|
|
#endif
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value << 2);
|
|
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add 4*index to base
|
|
reg_base = reg_index;
|
|
}
|
|
ASM_LOAD32_REG_REG(emit->as, REG_RET, reg_base); // load from (base+4*index)
|
|
break;
|
|
}
|
|
default:
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't load from '%q'", vtype_to_qstr(vtype_base));
|
|
}
|
|
} else {
|
|
// index is not an immediate
|
|
vtype_kind_t vtype_index;
|
|
int reg_index = REG_ARG_2;
|
|
emit_pre_pop_reg_flexible(emit, &vtype_index, ®_index, REG_ARG_1, REG_ARG_1);
|
|
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1);
|
|
if (vtype_index != VTYPE_INT && vtype_index != VTYPE_UINT) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't load with '%q' index", vtype_to_qstr(vtype_index));
|
|
}
|
|
switch (vtype_base) {
|
|
case VTYPE_PTR8: {
|
|
// pointer to 8-bit memory
|
|
// TODO optimise to use thumb ldrb r1, [r2, r3]
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_LOAD8_REG_REG(emit->as, REG_RET, REG_ARG_1); // store value to (base+index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR16: {
|
|
// pointer to 16-bit memory
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_LOAD16_REG_REG(emit->as, REG_RET, REG_ARG_1); // load from (base+2*index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR32: {
|
|
// pointer to word-size memory
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_LOAD32_REG_REG(emit->as, REG_RET, REG_ARG_1); // load from (base+4*index)
|
|
break;
|
|
}
|
|
default:
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't load from '%q'", vtype_to_qstr(vtype_base));
|
|
}
|
|
}
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_RET);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_store_fast(emit_t *emit, qstr qst, mp_uint_t local_num) {
|
|
vtype_kind_t vtype;
|
|
if (local_num < REG_LOCAL_NUM && CAN_USE_REGS_FOR_LOCALS(emit)) {
|
|
emit_pre_pop_reg(emit, &vtype, reg_local_table[local_num]);
|
|
} else {
|
|
emit_pre_pop_reg(emit, &vtype, REG_TEMP0);
|
|
emit_native_mov_state_reg(emit, LOCAL_IDX_LOCAL_VAR(emit, local_num), REG_TEMP0);
|
|
}
|
|
emit_post(emit);
|
|
|
|
// check types
|
|
if (emit->local_vtype[local_num] == VTYPE_UNBOUND) {
|
|
// first time this local is assigned, so give it a type of the object stored in it
|
|
emit->local_vtype[local_num] = vtype;
|
|
} else if (emit->local_vtype[local_num] != vtype) {
|
|
// type of local is not the same as object stored in it
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"local '%q' has type '%q' but source is '%q'",
|
|
qst, vtype_to_qstr(emit->local_vtype[local_num]), vtype_to_qstr(vtype));
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_store_deref(emit_t *emit, qstr qst, mp_uint_t local_num) {
|
|
DEBUG_printf("store_deref(%s, " UINT_FMT ")\n", qstr_str(qst), local_num);
|
|
need_reg_single(emit, REG_TEMP0, 0);
|
|
need_reg_single(emit, REG_TEMP1, 0);
|
|
emit_native_load_fast(emit, qst, local_num);
|
|
vtype_kind_t vtype;
|
|
int reg_base = REG_TEMP0;
|
|
emit_pre_pop_reg_flexible(emit, &vtype, ®_base, -1, -1);
|
|
int reg_src = REG_TEMP1;
|
|
emit_pre_pop_reg_flexible(emit, &vtype, ®_src, reg_base, reg_base);
|
|
ASM_STORE_REG_REG_OFFSET(emit->as, reg_src, reg_base, 1);
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_store_local(emit_t *emit, qstr qst, mp_uint_t local_num, int kind) {
|
|
if (kind == MP_EMIT_IDOP_LOCAL_FAST) {
|
|
emit_native_store_fast(emit, qst, local_num);
|
|
} else {
|
|
emit_native_store_deref(emit, qst, local_num);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_store_global(emit_t *emit, qstr qst, int kind) {
|
|
MP_STATIC_ASSERT(MP_F_STORE_NAME + MP_EMIT_IDOP_GLOBAL_NAME == MP_F_STORE_NAME);
|
|
MP_STATIC_ASSERT(MP_F_STORE_NAME + MP_EMIT_IDOP_GLOBAL_GLOBAL == MP_F_STORE_GLOBAL);
|
|
if (kind == MP_EMIT_IDOP_GLOBAL_NAME) {
|
|
// mp_store_name, but needs conversion of object (maybe have mp_viper_store_name(obj, type))
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_2);
|
|
assert(vtype == VTYPE_PYOBJ);
|
|
} else {
|
|
vtype_kind_t vtype = peek_vtype(emit, 0);
|
|
if (vtype == VTYPE_PYOBJ) {
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_2);
|
|
} else {
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_1);
|
|
emit_call_with_imm_arg(emit, MP_F_CONVERT_NATIVE_TO_OBJ, vtype, REG_ARG_2); // arg2 = type
|
|
ASM_MOV_REG_REG(emit->as, REG_ARG_2, REG_RET);
|
|
}
|
|
}
|
|
emit_call_with_imm_arg(emit, MP_F_STORE_NAME + kind, qst, REG_ARG_1); // arg1 = name
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_store_attr(emit_t *emit, qstr qst) {
|
|
vtype_kind_t vtype_base, vtype_val;
|
|
emit_pre_pop_reg_reg(emit, &vtype_base, REG_ARG_1, &vtype_val, REG_ARG_3); // arg1 = base, arg3 = value
|
|
assert(vtype_base == VTYPE_PYOBJ);
|
|
assert(vtype_val == VTYPE_PYOBJ);
|
|
emit_call_with_imm_arg(emit, MP_F_STORE_ATTR, qst, REG_ARG_2); // arg2 = attribute name
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_store_subscr(emit_t *emit) {
|
|
DEBUG_printf("store_subscr\n");
|
|
// need to compile: base[index] = value
|
|
|
|
// pop: index, base, value
|
|
// optimise case where index is an immediate
|
|
vtype_kind_t vtype_base = peek_vtype(emit, 1);
|
|
|
|
if (vtype_base == VTYPE_PYOBJ) {
|
|
// standard Python subscr
|
|
vtype_kind_t vtype_index = peek_vtype(emit, 0);
|
|
vtype_kind_t vtype_value = peek_vtype(emit, 2);
|
|
if (vtype_index != VTYPE_PYOBJ || vtype_value != VTYPE_PYOBJ) {
|
|
// need to implicitly convert non-objects to objects
|
|
// TODO do this properly
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_1, 3);
|
|
adjust_stack(emit, 3);
|
|
}
|
|
emit_pre_pop_reg_reg_reg(emit, &vtype_index, REG_ARG_2, &vtype_base, REG_ARG_1, &vtype_value, REG_ARG_3);
|
|
emit_call(emit, MP_F_OBJ_SUBSCR);
|
|
} else {
|
|
// viper store
|
|
// TODO The different machine architectures have very different
|
|
// capabilities and requirements for stores, so probably best to
|
|
// write a completely separate store-optimiser for each one.
|
|
stack_info_t *top = peek_stack(emit, 0);
|
|
if (top->vtype == VTYPE_INT && top->kind == STACK_IMM) {
|
|
// index is an immediate
|
|
mp_int_t index_value = top->data.u_imm;
|
|
emit_pre_pop_discard(emit); // discard index
|
|
vtype_kind_t vtype_value;
|
|
int reg_base = REG_ARG_1;
|
|
int reg_index = REG_ARG_2;
|
|
int reg_value = REG_ARG_3;
|
|
emit_pre_pop_reg_flexible(emit, &vtype_base, ®_base, reg_index, reg_value);
|
|
#if N_X86
|
|
// special case: x86 needs byte stores to be from lower 4 regs (REG_ARG_3 is EDX)
|
|
emit_pre_pop_reg(emit, &vtype_value, reg_value);
|
|
#else
|
|
emit_pre_pop_reg_flexible(emit, &vtype_value, ®_value, reg_base, reg_index);
|
|
#endif
|
|
if (vtype_value != VTYPE_BOOL && vtype_value != VTYPE_INT && vtype_value != VTYPE_UINT) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't store '%q'", vtype_to_qstr(vtype_value));
|
|
}
|
|
switch (vtype_base) {
|
|
case VTYPE_PTR8: {
|
|
// pointer to 8-bit memory
|
|
// TODO optimise to use thumb strb r1, [r2, r3]
|
|
if (index_value != 0) {
|
|
// index is non-zero
|
|
#if N_THUMB
|
|
if (index_value > 0 && index_value < 32) {
|
|
asm_thumb_strb_rlo_rlo_i5(emit->as, reg_value, reg_base, index_value);
|
|
break;
|
|
}
|
|
#endif
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value);
|
|
#if N_ARM
|
|
asm_arm_strb_reg_reg_reg(emit->as, reg_value, reg_base, reg_index);
|
|
return;
|
|
#endif
|
|
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add index to base
|
|
reg_base = reg_index;
|
|
}
|
|
ASM_STORE8_REG_REG(emit->as, reg_value, reg_base); // store value to (base+index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR16: {
|
|
// pointer to 16-bit memory
|
|
if (index_value != 0) {
|
|
// index is a non-zero immediate
|
|
#if N_THUMB
|
|
if (index_value > 0 && index_value < 32) {
|
|
asm_thumb_strh_rlo_rlo_i5(emit->as, reg_value, reg_base, index_value);
|
|
break;
|
|
}
|
|
#endif
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value << 1);
|
|
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add 2*index to base
|
|
reg_base = reg_index;
|
|
}
|
|
ASM_STORE16_REG_REG(emit->as, reg_value, reg_base); // store value to (base+2*index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR32: {
|
|
// pointer to 32-bit memory
|
|
if (index_value != 0) {
|
|
// index is a non-zero immediate
|
|
#if N_THUMB
|
|
if (index_value > 0 && index_value < 32) {
|
|
asm_thumb_str_rlo_rlo_i5(emit->as, reg_value, reg_base, index_value);
|
|
break;
|
|
}
|
|
#endif
|
|
#if N_ARM
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value);
|
|
asm_arm_str_reg_reg_reg(emit->as, reg_value, reg_base, reg_index);
|
|
return;
|
|
#endif
|
|
ASM_MOV_REG_IMM(emit->as, reg_index, index_value << 2);
|
|
ASM_ADD_REG_REG(emit->as, reg_index, reg_base); // add 4*index to base
|
|
reg_base = reg_index;
|
|
}
|
|
ASM_STORE32_REG_REG(emit->as, reg_value, reg_base); // store value to (base+4*index)
|
|
break;
|
|
}
|
|
default:
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't store to '%q'", vtype_to_qstr(vtype_base));
|
|
}
|
|
} else {
|
|
// index is not an immediate
|
|
vtype_kind_t vtype_index, vtype_value;
|
|
int reg_index = REG_ARG_2;
|
|
int reg_value = REG_ARG_3;
|
|
emit_pre_pop_reg_flexible(emit, &vtype_index, ®_index, REG_ARG_1, reg_value);
|
|
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1);
|
|
if (vtype_index != VTYPE_INT && vtype_index != VTYPE_UINT) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't store with '%q' index", vtype_to_qstr(vtype_index));
|
|
}
|
|
#if N_X86
|
|
// special case: x86 needs byte stores to be from lower 4 regs (REG_ARG_3 is EDX)
|
|
emit_pre_pop_reg(emit, &vtype_value, reg_value);
|
|
#else
|
|
emit_pre_pop_reg_flexible(emit, &vtype_value, ®_value, REG_ARG_1, reg_index);
|
|
#endif
|
|
if (vtype_value != VTYPE_BOOL && vtype_value != VTYPE_INT && vtype_value != VTYPE_UINT) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't store '%q'", vtype_to_qstr(vtype_value));
|
|
}
|
|
switch (vtype_base) {
|
|
case VTYPE_PTR8: {
|
|
// pointer to 8-bit memory
|
|
// TODO optimise to use thumb strb r1, [r2, r3]
|
|
#if N_ARM
|
|
asm_arm_strb_reg_reg_reg(emit->as, reg_value, REG_ARG_1, reg_index);
|
|
break;
|
|
#endif
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_STORE8_REG_REG(emit->as, reg_value, REG_ARG_1); // store value to (base+index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR16: {
|
|
// pointer to 16-bit memory
|
|
#if N_ARM
|
|
asm_arm_strh_reg_reg_reg(emit->as, reg_value, REG_ARG_1, reg_index);
|
|
break;
|
|
#endif
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_STORE16_REG_REG(emit->as, reg_value, REG_ARG_1); // store value to (base+2*index)
|
|
break;
|
|
}
|
|
case VTYPE_PTR32: {
|
|
// pointer to 32-bit memory
|
|
#if N_ARM
|
|
asm_arm_str_reg_reg_reg(emit->as, reg_value, REG_ARG_1, reg_index);
|
|
break;
|
|
#endif
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_1, reg_index); // add index to base
|
|
ASM_STORE32_REG_REG(emit->as, reg_value, REG_ARG_1); // store value to (base+4*index)
|
|
break;
|
|
}
|
|
default:
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't store to '%q'", vtype_to_qstr(vtype_base));
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_delete_local(emit_t *emit, qstr qst, mp_uint_t local_num, int kind) {
|
|
if (kind == MP_EMIT_IDOP_LOCAL_FAST) {
|
|
// TODO: This is not compliant implementation. We could use MP_OBJ_SENTINEL
|
|
// to mark deleted vars but then every var would need to be checked on
|
|
// each access. Very inefficient, so just set value to None to enable GC.
|
|
emit_native_load_const_tok(emit, MP_TOKEN_KW_NONE);
|
|
emit_native_store_fast(emit, qst, local_num);
|
|
} else {
|
|
// TODO implement me!
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_delete_global(emit_t *emit, qstr qst, int kind) {
|
|
MP_STATIC_ASSERT(MP_F_DELETE_NAME + MP_EMIT_IDOP_GLOBAL_NAME == MP_F_DELETE_NAME);
|
|
MP_STATIC_ASSERT(MP_F_DELETE_NAME + MP_EMIT_IDOP_GLOBAL_GLOBAL == MP_F_DELETE_GLOBAL);
|
|
emit_native_pre(emit);
|
|
emit_call_with_imm_arg(emit, MP_F_DELETE_NAME + kind, qst, REG_ARG_1);
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_delete_attr(emit_t *emit, qstr qst) {
|
|
vtype_kind_t vtype_base;
|
|
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = base
|
|
assert(vtype_base == VTYPE_PYOBJ);
|
|
emit_call_with_2_imm_args(emit, MP_F_STORE_ATTR, qst, REG_ARG_2, (mp_uint_t)MP_OBJ_NULL, REG_ARG_3); // arg2 = attribute name, arg3 = value (null for delete)
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_delete_subscr(emit_t *emit) {
|
|
vtype_kind_t vtype_index, vtype_base;
|
|
emit_pre_pop_reg_reg(emit, &vtype_index, REG_ARG_2, &vtype_base, REG_ARG_1); // index, base
|
|
assert(vtype_index == VTYPE_PYOBJ);
|
|
assert(vtype_base == VTYPE_PYOBJ);
|
|
emit_call_with_imm_arg(emit, MP_F_OBJ_SUBSCR, (mp_uint_t)MP_OBJ_NULL, REG_ARG_3);
|
|
}
|
|
|
|
STATIC void emit_native_subscr(emit_t *emit, int kind) {
|
|
if (kind == MP_EMIT_SUBSCR_LOAD) {
|
|
emit_native_load_subscr(emit);
|
|
} else if (kind == MP_EMIT_SUBSCR_STORE) {
|
|
emit_native_store_subscr(emit);
|
|
} else {
|
|
emit_native_delete_subscr(emit);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_attr(emit_t *emit, qstr qst, int kind) {
|
|
if (kind == MP_EMIT_ATTR_LOAD) {
|
|
emit_native_load_attr(emit, qst);
|
|
} else if (kind == MP_EMIT_ATTR_STORE) {
|
|
emit_native_store_attr(emit, qst);
|
|
} else {
|
|
emit_native_delete_attr(emit, qst);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_dup_top(emit_t *emit) {
|
|
DEBUG_printf("dup_top\n");
|
|
vtype_kind_t vtype;
|
|
int reg = REG_TEMP0;
|
|
emit_pre_pop_reg_flexible(emit, &vtype, ®, -1, -1);
|
|
emit_post_push_reg_reg(emit, vtype, reg, vtype, reg);
|
|
}
|
|
|
|
STATIC void emit_native_dup_top_two(emit_t *emit) {
|
|
vtype_kind_t vtype0, vtype1;
|
|
emit_pre_pop_reg_reg(emit, &vtype0, REG_TEMP0, &vtype1, REG_TEMP1);
|
|
emit_post_push_reg_reg_reg_reg(emit, vtype1, REG_TEMP1, vtype0, REG_TEMP0, vtype1, REG_TEMP1, vtype0, REG_TEMP0);
|
|
}
|
|
|
|
STATIC void emit_native_pop_top(emit_t *emit) {
|
|
DEBUG_printf("pop_top\n");
|
|
emit_pre_pop_discard(emit);
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_rot_two(emit_t *emit) {
|
|
DEBUG_printf("rot_two\n");
|
|
vtype_kind_t vtype0, vtype1;
|
|
emit_pre_pop_reg_reg(emit, &vtype0, REG_TEMP0, &vtype1, REG_TEMP1);
|
|
emit_post_push_reg_reg(emit, vtype0, REG_TEMP0, vtype1, REG_TEMP1);
|
|
}
|
|
|
|
STATIC void emit_native_rot_three(emit_t *emit) {
|
|
DEBUG_printf("rot_three\n");
|
|
vtype_kind_t vtype0, vtype1, vtype2;
|
|
emit_pre_pop_reg_reg_reg(emit, &vtype0, REG_TEMP0, &vtype1, REG_TEMP1, &vtype2, REG_TEMP2);
|
|
emit_post_push_reg_reg_reg(emit, vtype0, REG_TEMP0, vtype2, REG_TEMP2, vtype1, REG_TEMP1);
|
|
}
|
|
|
|
STATIC void emit_native_jump(emit_t *emit, mp_uint_t label) {
|
|
DEBUG_printf("jump(label=" UINT_FMT ")\n", label);
|
|
emit_native_pre(emit);
|
|
// need to commit stack because we are jumping elsewhere
|
|
need_stack_settled(emit);
|
|
ASM_JUMP(emit->as, label);
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_jump_helper(emit_t *emit, bool cond, mp_uint_t label, bool pop) {
|
|
vtype_kind_t vtype = peek_vtype(emit, 0);
|
|
if (vtype == VTYPE_PYOBJ) {
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_1);
|
|
if (!pop) {
|
|
adjust_stack(emit, 1);
|
|
}
|
|
emit_call(emit, MP_F_OBJ_IS_TRUE);
|
|
} else {
|
|
emit_pre_pop_reg(emit, &vtype, REG_RET);
|
|
if (!pop) {
|
|
adjust_stack(emit, 1);
|
|
}
|
|
if (!(vtype == VTYPE_BOOL || vtype == VTYPE_INT || vtype == VTYPE_UINT)) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't implicitly convert '%q' to 'bool'", vtype_to_qstr(vtype));
|
|
}
|
|
}
|
|
// For non-pop need to save the vtype so that emit_native_adjust_stack_size
|
|
// can use it. This is a bit of a hack.
|
|
if (!pop) {
|
|
emit->saved_stack_vtype = vtype;
|
|
}
|
|
// need to commit stack because we may jump elsewhere
|
|
need_stack_settled(emit);
|
|
// Emit the jump
|
|
if (cond) {
|
|
ASM_JUMP_IF_REG_NONZERO(emit->as, REG_RET, label, vtype == VTYPE_PYOBJ);
|
|
} else {
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_RET, label, vtype == VTYPE_PYOBJ);
|
|
}
|
|
if (!pop) {
|
|
adjust_stack(emit, -1);
|
|
}
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_pop_jump_if(emit_t *emit, bool cond, mp_uint_t label) {
|
|
DEBUG_printf("pop_jump_if(cond=%u, label=" UINT_FMT ")\n", cond, label);
|
|
emit_native_jump_helper(emit, cond, label, true);
|
|
}
|
|
|
|
STATIC void emit_native_jump_if_or_pop(emit_t *emit, bool cond, mp_uint_t label) {
|
|
DEBUG_printf("jump_if_or_pop(cond=%u, label=" UINT_FMT ")\n", cond, label);
|
|
emit_native_jump_helper(emit, cond, label, false);
|
|
}
|
|
|
|
STATIC void emit_native_unwind_jump(emit_t *emit, mp_uint_t label, mp_uint_t except_depth) {
|
|
if (except_depth > 0) {
|
|
exc_stack_entry_t *first_finally = NULL;
|
|
exc_stack_entry_t *prev_finally = NULL;
|
|
exc_stack_entry_t *e = &emit->exc_stack[emit->exc_stack_size - 1];
|
|
for (; except_depth > 0; --except_depth, --e) {
|
|
if (e->is_finally && e->is_active) {
|
|
// Found an active finally handler
|
|
if (first_finally == NULL) {
|
|
first_finally = e;
|
|
}
|
|
if (prev_finally != NULL) {
|
|
// Mark prev finally as needed to unwind a jump
|
|
prev_finally->unwind_label = e->label;
|
|
}
|
|
prev_finally = e;
|
|
}
|
|
}
|
|
if (prev_finally == NULL) {
|
|
// No finally, handle the jump ourselves
|
|
// First, restore the exception handler address for the jump
|
|
if (e < emit->exc_stack) {
|
|
ASM_XOR_REG_REG(emit->as, REG_RET, REG_RET);
|
|
} else {
|
|
ASM_MOV_REG_PCREL(emit->as, REG_RET, e->label);
|
|
}
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_PC(emit), REG_RET);
|
|
} else {
|
|
// Last finally should do our jump for us
|
|
// Mark finally as needing to decide the type of jump
|
|
prev_finally->unwind_label = UNWIND_LABEL_DO_FINAL_UNWIND;
|
|
ASM_MOV_REG_PCREL(emit->as, REG_RET, label & ~MP_EMIT_BREAK_FROM_FOR);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_UNWIND(emit), REG_RET);
|
|
// Cancel any active exception (see also emit_native_pop_except)
|
|
emit_native_mov_reg_const(emit, REG_RET, MP_F_CONST_NONE_OBJ);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_VAL(emit), REG_RET);
|
|
// Jump to the innermost active finally
|
|
label = first_finally->label;
|
|
}
|
|
}
|
|
emit_native_jump(emit, label & ~MP_EMIT_BREAK_FROM_FOR);
|
|
}
|
|
|
|
STATIC void emit_native_setup_with(emit_t *emit, mp_uint_t label) {
|
|
// the context manager is on the top of the stack
|
|
// stack: (..., ctx_mgr)
|
|
|
|
// get __exit__ method
|
|
vtype_kind_t vtype;
|
|
emit_access_stack(emit, 1, &vtype, REG_ARG_1); // arg1 = ctx_mgr
|
|
assert(vtype == VTYPE_PYOBJ);
|
|
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, 2); // arg3 = dest ptr
|
|
emit_call_with_imm_arg(emit, MP_F_LOAD_METHOD, MP_QSTR___exit__, REG_ARG_2);
|
|
// stack: (..., ctx_mgr, __exit__, self)
|
|
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_3); // self
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_2); // __exit__
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_1); // ctx_mgr
|
|
emit_post_push_reg(emit, vtype, REG_ARG_2); // __exit__
|
|
emit_post_push_reg(emit, vtype, REG_ARG_3); // self
|
|
// stack: (..., __exit__, self)
|
|
// REG_ARG_1=ctx_mgr
|
|
|
|
// get __enter__ method
|
|
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, 2); // arg3 = dest ptr
|
|
emit_call_with_imm_arg(emit, MP_F_LOAD_METHOD, MP_QSTR___enter__, REG_ARG_2); // arg2 = method name
|
|
// stack: (..., __exit__, self, __enter__, self)
|
|
|
|
// call __enter__ method
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, 2); // pointer to items, including meth and self
|
|
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW, 0, REG_ARG_1, 0, REG_ARG_2);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // push return value of __enter__
|
|
// stack: (..., __exit__, self, as_value)
|
|
|
|
// need to commit stack because we may jump elsewhere
|
|
need_stack_settled(emit);
|
|
emit_native_push_exc_stack(emit, label, true);
|
|
|
|
emit_native_dup_top(emit);
|
|
// stack: (..., __exit__, self, as_value, as_value)
|
|
}
|
|
|
|
STATIC void emit_native_setup_block(emit_t *emit, mp_uint_t label, int kind) {
|
|
if (kind == MP_EMIT_SETUP_BLOCK_WITH) {
|
|
emit_native_setup_with(emit, label);
|
|
} else {
|
|
// Set up except and finally
|
|
emit_native_pre(emit);
|
|
need_stack_settled(emit);
|
|
emit_native_push_exc_stack(emit, label, kind == MP_EMIT_SETUP_BLOCK_FINALLY);
|
|
emit_post(emit);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_with_cleanup(emit_t *emit, mp_uint_t label) {
|
|
// Note: 3 labels are reserved for this function, starting at *emit->label_slot
|
|
|
|
// stack: (..., __exit__, self, as_value)
|
|
emit_native_pre(emit);
|
|
emit_native_leave_exc_stack(emit, false);
|
|
adjust_stack(emit, -1);
|
|
// stack: (..., __exit__, self)
|
|
|
|
// Label for case where __exit__ is called from an unwind jump
|
|
emit_native_label_assign(emit, *emit->label_slot + 2);
|
|
|
|
// call __exit__
|
|
emit_post_push_imm(emit, VTYPE_PTR_NONE, 0);
|
|
emit_post_push_imm(emit, VTYPE_PTR_NONE, 0);
|
|
emit_post_push_imm(emit, VTYPE_PTR_NONE, 0);
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, 5);
|
|
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW, 3, REG_ARG_1, 0, REG_ARG_2);
|
|
|
|
// Replace exc with None and finish
|
|
emit_native_jump(emit, *emit->label_slot);
|
|
|
|
// nlr_catch
|
|
// Don't use emit_native_label_assign because this isn't a real finally label
|
|
mp_asm_base_label_assign(&emit->as->base, label);
|
|
|
|
// Leave with's exception handler
|
|
emit_native_leave_exc_stack(emit, true);
|
|
|
|
// Adjust stack counter for: __exit__, self (implicitly discard as_value which is above self)
|
|
emit_native_adjust_stack_size(emit, 2);
|
|
// stack: (..., __exit__, self)
|
|
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_ARG_1, LOCAL_IDX_EXC_VAL(emit)); // get exc
|
|
|
|
// Check if exc is None and jump to non-exc handler if it is
|
|
emit_native_mov_reg_const(emit, REG_ARG_2, MP_F_CONST_NONE_OBJ);
|
|
ASM_JUMP_IF_REG_EQ(emit->as, REG_ARG_1, REG_ARG_2, *emit->label_slot + 2);
|
|
|
|
ASM_LOAD_REG_REG_OFFSET(emit->as, REG_ARG_2, REG_ARG_1, 0); // get type(exc)
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_ARG_2); // push type(exc)
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_ARG_1); // push exc value
|
|
emit_post_push_imm(emit, VTYPE_PTR_NONE, 0); // traceback info
|
|
// Stack: (..., __exit__, self, type(exc), exc, traceback)
|
|
|
|
// call __exit__ method
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, 5);
|
|
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW, 3, REG_ARG_1, 0, REG_ARG_2);
|
|
// Stack: (...)
|
|
|
|
// If REG_RET is true then we need to replace exception with None (swallow exception)
|
|
if (REG_ARG_1 != REG_RET) {
|
|
ASM_MOV_REG_REG(emit->as, REG_ARG_1, REG_RET);
|
|
}
|
|
emit_call(emit, MP_F_OBJ_IS_TRUE);
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_RET, *emit->label_slot + 1, true);
|
|
|
|
// Replace exception with None
|
|
emit_native_label_assign(emit, *emit->label_slot);
|
|
emit_native_mov_reg_const(emit, REG_TEMP0, MP_F_CONST_NONE_OBJ);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_VAL(emit), REG_TEMP0);
|
|
|
|
// end of with cleanup nlr_catch block
|
|
emit_native_label_assign(emit, *emit->label_slot + 1);
|
|
|
|
// Exception is in nlr_buf.ret_val slot
|
|
}
|
|
|
|
STATIC void emit_native_end_finally(emit_t *emit) {
|
|
// logic:
|
|
// exc = pop_stack
|
|
// if exc == None: pass
|
|
// else: raise exc
|
|
// the check if exc is None is done in the MP_F_NATIVE_RAISE stub
|
|
emit_native_pre(emit);
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_ARG_1, LOCAL_IDX_EXC_VAL(emit));
|
|
emit_call(emit, MP_F_NATIVE_RAISE);
|
|
|
|
// Get state for this finally and see if we need to unwind
|
|
exc_stack_entry_t *e = emit_native_pop_exc_stack(emit);
|
|
if (e->unwind_label != UNWIND_LABEL_UNUSED) {
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_RET, LOCAL_IDX_EXC_HANDLER_UNWIND(emit));
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_RET, *emit->label_slot, false);
|
|
if (e->unwind_label == UNWIND_LABEL_DO_FINAL_UNWIND) {
|
|
ASM_JUMP_REG(emit->as, REG_RET);
|
|
} else {
|
|
emit_native_jump(emit, e->unwind_label);
|
|
}
|
|
emit_native_label_assign(emit, *emit->label_slot);
|
|
}
|
|
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_get_iter(emit_t *emit, bool use_stack) {
|
|
// perhaps the difficult one, as we want to rewrite for loops using native code
|
|
// in cases where we iterate over a Python object, can we use normal runtime calls?
|
|
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_1);
|
|
assert(vtype == VTYPE_PYOBJ);
|
|
if (use_stack) {
|
|
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_2, MP_OBJ_ITER_BUF_NSLOTS);
|
|
emit_call(emit, MP_F_NATIVE_GETITER);
|
|
} else {
|
|
// mp_getiter will allocate the iter_buf on the heap
|
|
ASM_MOV_REG_IMM(emit->as, REG_ARG_2, 0);
|
|
emit_call(emit, MP_F_NATIVE_GETITER);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_for_iter(emit_t *emit, mp_uint_t label) {
|
|
emit_native_pre(emit);
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_1, MP_OBJ_ITER_BUF_NSLOTS);
|
|
adjust_stack(emit, MP_OBJ_ITER_BUF_NSLOTS);
|
|
emit_call(emit, MP_F_NATIVE_ITERNEXT);
|
|
#ifdef NDEBUG
|
|
MP_STATIC_ASSERT(MP_OBJ_STOP_ITERATION == 0);
|
|
ASM_JUMP_IF_REG_ZERO(emit->as, REG_RET, label, false);
|
|
#else
|
|
ASM_MOV_REG_IMM(emit->as, REG_TEMP1, (mp_uint_t)MP_OBJ_STOP_ITERATION);
|
|
ASM_JUMP_IF_REG_EQ(emit->as, REG_RET, REG_TEMP1, label);
|
|
#endif
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
|
|
STATIC void emit_native_for_iter_end(emit_t *emit) {
|
|
// adjust stack counter (we get here from for_iter ending, which popped the value for us)
|
|
emit_native_pre(emit);
|
|
adjust_stack(emit, -MP_OBJ_ITER_BUF_NSLOTS);
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_pop_block(emit_t *emit) {
|
|
emit_native_pre(emit);
|
|
if (!emit->exc_stack[emit->exc_stack_size - 1].is_finally) {
|
|
emit_native_leave_exc_stack(emit, false);
|
|
}
|
|
emit_post(emit);
|
|
}
|
|
|
|
STATIC void emit_native_pop_except(emit_t *emit) {
|
|
// Cancel any active exception so subsequent handlers don't see it
|
|
emit_native_mov_reg_const(emit, REG_TEMP0, MP_F_CONST_NONE_OBJ);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_VAL(emit), REG_TEMP0);
|
|
}
|
|
|
|
STATIC void emit_native_unary_op(emit_t *emit, mp_unary_op_t op) {
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_2);
|
|
if (vtype == VTYPE_PYOBJ) {
|
|
emit_call_with_imm_arg(emit, MP_F_UNARY_OP, op, REG_ARG_1);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
} else {
|
|
adjust_stack(emit, 1);
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"unary op %q not implemented", mp_unary_op_method_name[op]);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_binary_op(emit_t *emit, mp_binary_op_t op) {
|
|
DEBUG_printf("binary_op(" UINT_FMT ")\n", op);
|
|
vtype_kind_t vtype_lhs = peek_vtype(emit, 1);
|
|
vtype_kind_t vtype_rhs = peek_vtype(emit, 0);
|
|
if (vtype_lhs == VTYPE_INT && vtype_rhs == VTYPE_INT) {
|
|
// for integers, inplace and normal ops are equivalent, so use just normal ops
|
|
if (MP_BINARY_OP_INPLACE_OR <= op && op <= MP_BINARY_OP_INPLACE_POWER) {
|
|
op += MP_BINARY_OP_OR - MP_BINARY_OP_INPLACE_OR;
|
|
}
|
|
|
|
#if N_X64 || N_X86
|
|
// special cases for x86 and shifting
|
|
if (op == MP_BINARY_OP_LSHIFT || op == MP_BINARY_OP_RSHIFT) {
|
|
#if N_X64
|
|
emit_pre_pop_reg_reg(emit, &vtype_rhs, ASM_X64_REG_RCX, &vtype_lhs, REG_RET);
|
|
#else
|
|
emit_pre_pop_reg_reg(emit, &vtype_rhs, ASM_X86_REG_ECX, &vtype_lhs, REG_RET);
|
|
#endif
|
|
if (op == MP_BINARY_OP_LSHIFT) {
|
|
ASM_LSL_REG(emit->as, REG_RET);
|
|
} else {
|
|
ASM_ASR_REG(emit->as, REG_RET);
|
|
}
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_RET);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
// special cases for floor-divide and module because we dispatch to helper functions
|
|
if (op == MP_BINARY_OP_FLOOR_DIVIDE || op == MP_BINARY_OP_MODULO) {
|
|
emit_pre_pop_reg_reg(emit, &vtype_rhs, REG_ARG_2, &vtype_lhs, REG_ARG_1);
|
|
if (op == MP_BINARY_OP_FLOOR_DIVIDE) {
|
|
emit_call(emit, MP_F_SMALL_INT_FLOOR_DIVIDE);
|
|
} else {
|
|
emit_call(emit, MP_F_SMALL_INT_MODULO);
|
|
}
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_RET);
|
|
return;
|
|
}
|
|
|
|
int reg_rhs = REG_ARG_3;
|
|
emit_pre_pop_reg_flexible(emit, &vtype_rhs, ®_rhs, REG_RET, REG_ARG_2);
|
|
emit_pre_pop_reg(emit, &vtype_lhs, REG_ARG_2);
|
|
if (0) {
|
|
// dummy
|
|
#if !(N_X64 || N_X86)
|
|
} else if (op == MP_BINARY_OP_LSHIFT) {
|
|
ASM_LSL_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (op == MP_BINARY_OP_RSHIFT) {
|
|
ASM_ASR_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
#endif
|
|
} else if (op == MP_BINARY_OP_OR) {
|
|
ASM_OR_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (op == MP_BINARY_OP_XOR) {
|
|
ASM_XOR_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (op == MP_BINARY_OP_AND) {
|
|
ASM_AND_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (op == MP_BINARY_OP_ADD) {
|
|
ASM_ADD_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (op == MP_BINARY_OP_SUBTRACT) {
|
|
ASM_SUB_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (op == MP_BINARY_OP_MULTIPLY) {
|
|
ASM_MUL_REG_REG(emit->as, REG_ARG_2, reg_rhs);
|
|
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
|
|
} else if (MP_BINARY_OP_LESS <= op && op <= MP_BINARY_OP_NOT_EQUAL) {
|
|
// comparison ops are (in enum order):
|
|
// MP_BINARY_OP_LESS
|
|
// MP_BINARY_OP_MORE
|
|
// MP_BINARY_OP_EQUAL
|
|
// MP_BINARY_OP_LESS_EQUAL
|
|
// MP_BINARY_OP_MORE_EQUAL
|
|
// MP_BINARY_OP_NOT_EQUAL
|
|
need_reg_single(emit, REG_RET, 0);
|
|
#if N_X64
|
|
asm_x64_xor_r64_r64(emit->as, REG_RET, REG_RET);
|
|
asm_x64_cmp_r64_with_r64(emit->as, reg_rhs, REG_ARG_2);
|
|
static byte ops[6] = {
|
|
ASM_X64_CC_JL,
|
|
ASM_X64_CC_JG,
|
|
ASM_X64_CC_JE,
|
|
ASM_X64_CC_JLE,
|
|
ASM_X64_CC_JGE,
|
|
ASM_X64_CC_JNE,
|
|
};
|
|
asm_x64_setcc_r8(emit->as, ops[op - MP_BINARY_OP_LESS], REG_RET);
|
|
#elif N_X86
|
|
asm_x86_xor_r32_r32(emit->as, REG_RET, REG_RET);
|
|
asm_x86_cmp_r32_with_r32(emit->as, reg_rhs, REG_ARG_2);
|
|
static byte ops[6] = {
|
|
ASM_X86_CC_JL,
|
|
ASM_X86_CC_JG,
|
|
ASM_X86_CC_JE,
|
|
ASM_X86_CC_JLE,
|
|
ASM_X86_CC_JGE,
|
|
ASM_X86_CC_JNE,
|
|
};
|
|
asm_x86_setcc_r8(emit->as, ops[op - MP_BINARY_OP_LESS], REG_RET);
|
|
#elif N_THUMB
|
|
asm_thumb_cmp_rlo_rlo(emit->as, REG_ARG_2, reg_rhs);
|
|
static uint16_t ops[6] = {
|
|
ASM_THUMB_OP_ITE_GE,
|
|
ASM_THUMB_OP_ITE_GT,
|
|
ASM_THUMB_OP_ITE_EQ,
|
|
ASM_THUMB_OP_ITE_GT,
|
|
ASM_THUMB_OP_ITE_GE,
|
|
ASM_THUMB_OP_ITE_EQ,
|
|
};
|
|
static byte ret[6] = { 0, 1, 1, 0, 1, 0, };
|
|
asm_thumb_op16(emit->as, ops[op - MP_BINARY_OP_LESS]);
|
|
asm_thumb_mov_rlo_i8(emit->as, REG_RET, ret[op - MP_BINARY_OP_LESS]);
|
|
asm_thumb_mov_rlo_i8(emit->as, REG_RET, ret[op - MP_BINARY_OP_LESS] ^ 1);
|
|
#elif N_ARM
|
|
asm_arm_cmp_reg_reg(emit->as, REG_ARG_2, reg_rhs);
|
|
static uint ccs[6] = {
|
|
ASM_ARM_CC_LT,
|
|
ASM_ARM_CC_GT,
|
|
ASM_ARM_CC_EQ,
|
|
ASM_ARM_CC_LE,
|
|
ASM_ARM_CC_GE,
|
|
ASM_ARM_CC_NE,
|
|
};
|
|
asm_arm_setcc_reg(emit->as, REG_RET, ccs[op - MP_BINARY_OP_LESS]);
|
|
#elif N_XTENSA
|
|
static uint8_t ccs[6] = {
|
|
ASM_XTENSA_CC_LT,
|
|
0x80 | ASM_XTENSA_CC_LT, // for GT we'll swap args
|
|
ASM_XTENSA_CC_EQ,
|
|
0x80 | ASM_XTENSA_CC_GE, // for LE we'll swap args
|
|
ASM_XTENSA_CC_GE,
|
|
ASM_XTENSA_CC_NE,
|
|
};
|
|
uint8_t cc = ccs[op - MP_BINARY_OP_LESS];
|
|
if ((cc & 0x80) == 0) {
|
|
asm_xtensa_setcc_reg_reg_reg(emit->as, cc, REG_RET, REG_ARG_2, reg_rhs);
|
|
} else {
|
|
asm_xtensa_setcc_reg_reg_reg(emit->as, cc & ~0x80, REG_RET, reg_rhs, REG_ARG_2);
|
|
}
|
|
#else
|
|
#error not implemented
|
|
#endif
|
|
emit_post_push_reg(emit, VTYPE_BOOL, REG_RET);
|
|
} else {
|
|
// TODO other ops not yet implemented
|
|
adjust_stack(emit, 1);
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"binary op %q not implemented", mp_binary_op_method_name[op]);
|
|
}
|
|
} else if (vtype_lhs == VTYPE_PYOBJ && vtype_rhs == VTYPE_PYOBJ) {
|
|
emit_pre_pop_reg_reg(emit, &vtype_rhs, REG_ARG_3, &vtype_lhs, REG_ARG_2);
|
|
bool invert = false;
|
|
if (op == MP_BINARY_OP_NOT_IN) {
|
|
invert = true;
|
|
op = MP_BINARY_OP_IN;
|
|
} else if (op == MP_BINARY_OP_IS_NOT) {
|
|
invert = true;
|
|
op = MP_BINARY_OP_IS;
|
|
}
|
|
emit_call_with_imm_arg(emit, MP_F_BINARY_OP, op, REG_ARG_1);
|
|
if (invert) {
|
|
ASM_MOV_REG_REG(emit->as, REG_ARG_2, REG_RET);
|
|
emit_call_with_imm_arg(emit, MP_F_UNARY_OP, MP_UNARY_OP_NOT, REG_ARG_1);
|
|
}
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
} else {
|
|
adjust_stack(emit, -1);
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"can't do binary op between '%q' and '%q'",
|
|
vtype_to_qstr(vtype_lhs), vtype_to_qstr(vtype_rhs));
|
|
}
|
|
}
|
|
|
|
#if MICROPY_PY_BUILTINS_SLICE
|
|
STATIC void emit_native_build_slice(emit_t *emit, mp_uint_t n_args);
|
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#endif
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|
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STATIC void emit_native_build(emit_t *emit, mp_uint_t n_args, int kind) {
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// for viper: call runtime, with types of args
|
|
// if wrapped in byte_array, or something, allocates memory and fills it
|
|
MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_TUPLE == MP_F_BUILD_TUPLE);
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MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_LIST == MP_F_BUILD_LIST);
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|
MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_MAP == MP_F_BUILD_MAP);
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MP_STATIC_ASSERT(MP_F_BUILD_TUPLE + MP_EMIT_BUILD_SET == MP_F_BUILD_SET);
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#if MICROPY_PY_BUILTINS_SLICE
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if (kind == MP_EMIT_BUILD_SLICE) {
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emit_native_build_slice(emit, n_args);
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return;
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}
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#endif
|
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emit_native_pre(emit);
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if (kind == MP_EMIT_BUILD_TUPLE || kind == MP_EMIT_BUILD_LIST || kind == MP_EMIT_BUILD_SET) {
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emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_args); // pointer to items
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}
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emit_call_with_imm_arg(emit, MP_F_BUILD_TUPLE + kind, n_args, REG_ARG_1);
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emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new tuple/list/map/set
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}
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STATIC void emit_native_store_map(emit_t *emit) {
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vtype_kind_t vtype_key, vtype_value, vtype_map;
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emit_pre_pop_reg_reg_reg(emit, &vtype_key, REG_ARG_2, &vtype_value, REG_ARG_3, &vtype_map, REG_ARG_1); // key, value, map
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assert(vtype_key == VTYPE_PYOBJ);
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assert(vtype_value == VTYPE_PYOBJ);
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assert(vtype_map == VTYPE_PYOBJ);
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emit_call(emit, MP_F_STORE_MAP);
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emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // map
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}
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#if MICROPY_PY_BUILTINS_SLICE
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STATIC void emit_native_build_slice(emit_t *emit, mp_uint_t n_args) {
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DEBUG_printf("build_slice %d\n", n_args);
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if (n_args == 2) {
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vtype_kind_t vtype_start, vtype_stop;
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emit_pre_pop_reg_reg(emit, &vtype_stop, REG_ARG_2, &vtype_start, REG_ARG_1); // arg1 = start, arg2 = stop
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assert(vtype_start == VTYPE_PYOBJ);
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assert(vtype_stop == VTYPE_PYOBJ);
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emit_native_mov_reg_const(emit, REG_ARG_3, MP_F_CONST_NONE_OBJ); // arg3 = step
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} else {
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assert(n_args == 3);
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vtype_kind_t vtype_start, vtype_stop, vtype_step;
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emit_pre_pop_reg_reg_reg(emit, &vtype_step, REG_ARG_3, &vtype_stop, REG_ARG_2, &vtype_start, REG_ARG_1); // arg1 = start, arg2 = stop, arg3 = step
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assert(vtype_start == VTYPE_PYOBJ);
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assert(vtype_stop == VTYPE_PYOBJ);
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assert(vtype_step == VTYPE_PYOBJ);
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}
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emit_call(emit, MP_F_NEW_SLICE);
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emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
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}
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#endif
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STATIC void emit_native_store_comp(emit_t *emit, scope_kind_t kind, mp_uint_t collection_index) {
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mp_fun_kind_t f;
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if (kind == SCOPE_LIST_COMP) {
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vtype_kind_t vtype_item;
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emit_pre_pop_reg(emit, &vtype_item, REG_ARG_2);
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assert(vtype_item == VTYPE_PYOBJ);
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f = MP_F_LIST_APPEND;
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#if MICROPY_PY_BUILTINS_SET
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} else if (kind == SCOPE_SET_COMP) {
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vtype_kind_t vtype_item;
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emit_pre_pop_reg(emit, &vtype_item, REG_ARG_2);
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assert(vtype_item == VTYPE_PYOBJ);
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f = MP_F_STORE_SET;
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#endif
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} else {
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|
// SCOPE_DICT_COMP
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vtype_kind_t vtype_key, vtype_value;
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emit_pre_pop_reg_reg(emit, &vtype_key, REG_ARG_2, &vtype_value, REG_ARG_3);
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assert(vtype_key == VTYPE_PYOBJ);
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assert(vtype_value == VTYPE_PYOBJ);
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f = MP_F_STORE_MAP;
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}
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vtype_kind_t vtype_collection;
|
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emit_access_stack(emit, collection_index, &vtype_collection, REG_ARG_1);
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assert(vtype_collection == VTYPE_PYOBJ);
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emit_call(emit, f);
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emit_post(emit);
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}
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STATIC void emit_native_unpack_sequence(emit_t *emit, mp_uint_t n_args) {
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DEBUG_printf("unpack_sequence %d\n", n_args);
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vtype_kind_t vtype_base;
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emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = seq
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assert(vtype_base == VTYPE_PYOBJ);
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emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, n_args); // arg3 = dest ptr
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emit_call_with_imm_arg(emit, MP_F_UNPACK_SEQUENCE, n_args, REG_ARG_2); // arg2 = n_args
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}
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STATIC void emit_native_unpack_ex(emit_t *emit, mp_uint_t n_left, mp_uint_t n_right) {
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DEBUG_printf("unpack_ex %d %d\n", n_left, n_right);
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|
vtype_kind_t vtype_base;
|
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emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = seq
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assert(vtype_base == VTYPE_PYOBJ);
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emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, n_left + n_right + 1); // arg3 = dest ptr
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emit_call_with_imm_arg(emit, MP_F_UNPACK_EX, n_left | (n_right << 8), REG_ARG_2); // arg2 = n_left + n_right
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}
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STATIC void emit_native_make_function(emit_t *emit, scope_t *scope, mp_uint_t n_pos_defaults, mp_uint_t n_kw_defaults) {
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// call runtime, with type info for args, or don't support dict/default params, or only support Python objects for them
|
|
emit_native_pre(emit);
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if (n_pos_defaults == 0 && n_kw_defaults == 0) {
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need_reg_all(emit);
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ASM_MOV_REG_IMM(emit->as, REG_ARG_2, (mp_uint_t)MP_OBJ_NULL);
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ASM_MOV_REG_IMM(emit->as, REG_ARG_3, (mp_uint_t)MP_OBJ_NULL);
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} else {
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|
vtype_kind_t vtype_def_tuple, vtype_def_dict;
|
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emit_pre_pop_reg_reg(emit, &vtype_def_dict, REG_ARG_3, &vtype_def_tuple, REG_ARG_2);
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|
assert(vtype_def_tuple == VTYPE_PYOBJ);
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|
assert(vtype_def_dict == VTYPE_PYOBJ);
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|
need_reg_all(emit);
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}
|
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emit_load_reg_with_raw_code(emit, REG_ARG_1, scope->raw_code);
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ASM_CALL_IND(emit->as, MP_F_MAKE_FUNCTION_FROM_RAW_CODE);
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emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
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|
}
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STATIC void emit_native_make_closure(emit_t *emit, scope_t *scope, mp_uint_t n_closed_over, mp_uint_t n_pos_defaults, mp_uint_t n_kw_defaults) {
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emit_native_pre(emit);
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if (n_pos_defaults == 0 && n_kw_defaults == 0) {
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emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_closed_over);
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ASM_MOV_REG_IMM(emit->as, REG_ARG_2, n_closed_over);
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} else {
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|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_closed_over + 2);
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ASM_MOV_REG_IMM(emit->as, REG_ARG_2, 0x100 | n_closed_over);
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|
}
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|
emit_load_reg_with_raw_code(emit, REG_ARG_1, scope->raw_code);
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|
ASM_CALL_IND(emit->as, MP_F_MAKE_CLOSURE_FROM_RAW_CODE);
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|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
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|
}
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|
|
STATIC void emit_native_call_function(emit_t *emit, mp_uint_t n_positional, mp_uint_t n_keyword, mp_uint_t star_flags) {
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|
DEBUG_printf("call_function(n_pos=" UINT_FMT ", n_kw=" UINT_FMT ", star_flags=" UINT_FMT ")\n", n_positional, n_keyword, star_flags);
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|
// TODO: in viper mode, call special runtime routine with type info for args,
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|
// and wanted type info for return, to remove need for boxing/unboxing
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|
emit_native_pre(emit);
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vtype_kind_t vtype_fun = peek_vtype(emit, n_positional + 2 * n_keyword);
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if (vtype_fun == VTYPE_BUILTIN_CAST) {
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|
// casting operator
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assert(n_positional == 1 && n_keyword == 0);
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|
assert(!star_flags);
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|
DEBUG_printf(" cast to %d\n", vtype_fun);
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|
vtype_kind_t vtype_cast = peek_stack(emit, 1)->data.u_imm;
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|
switch (peek_vtype(emit, 0)) {
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|
case VTYPE_PYOBJ: {
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|
vtype_kind_t vtype;
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|
emit_pre_pop_reg(emit, &vtype, REG_ARG_1);
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|
emit_pre_pop_discard(emit);
|
|
emit_call_with_imm_arg(emit, MP_F_CONVERT_OBJ_TO_NATIVE, vtype_cast, REG_ARG_2); // arg2 = type
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|
emit_post_push_reg(emit, vtype_cast, REG_RET);
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|
break;
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|
}
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|
case VTYPE_BOOL:
|
|
case VTYPE_INT:
|
|
case VTYPE_UINT:
|
|
case VTYPE_PTR:
|
|
case VTYPE_PTR8:
|
|
case VTYPE_PTR16:
|
|
case VTYPE_PTR32:
|
|
case VTYPE_PTR_NONE:
|
|
emit_fold_stack_top(emit, REG_ARG_1);
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|
emit_post_top_set_vtype(emit, vtype_cast);
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|
break;
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|
default:
|
|
// this can happen when casting a cast: int(int)
|
|
mp_raise_NotImplementedError("casting");
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|
}
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|
} else {
|
|
assert(vtype_fun == VTYPE_PYOBJ);
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|
if (star_flags) {
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|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_positional + 2 * n_keyword + 3); // pointer to args
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|
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW_VAR, 0, REG_ARG_1, n_positional | (n_keyword << 8), REG_ARG_2);
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|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
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|
} else {
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|
if (n_positional != 0 || n_keyword != 0) {
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_positional + 2 * n_keyword); // pointer to args
|
|
}
|
|
emit_pre_pop_reg(emit, &vtype_fun, REG_ARG_1); // the function
|
|
emit_call_with_imm_arg(emit, MP_F_NATIVE_CALL_FUNCTION_N_KW, n_positional | (n_keyword << 8), REG_ARG_2);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
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|
}
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|
}
|
|
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|
STATIC void emit_native_call_method(emit_t *emit, mp_uint_t n_positional, mp_uint_t n_keyword, mp_uint_t star_flags) {
|
|
if (star_flags) {
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|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, n_positional + 2 * n_keyword + 4); // pointer to args
|
|
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW_VAR, 1, REG_ARG_1, n_positional | (n_keyword << 8), REG_ARG_2);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
} else {
|
|
emit_native_pre(emit);
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, 2 + n_positional + 2 * n_keyword); // pointer to items, including meth and self
|
|
emit_call_with_2_imm_args(emit, MP_F_CALL_METHOD_N_KW, n_positional, REG_ARG_1, n_keyword, REG_ARG_2);
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_return_value(emit_t *emit) {
|
|
DEBUG_printf("return_value\n");
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|
|
|
if (emit->scope->scope_flags & MP_SCOPE_FLAG_GENERATOR) {
|
|
// Save pointer to current stack position for caller to access return value
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_TEMP0, 1);
|
|
emit_native_mov_state_reg(emit, offsetof(mp_code_state_t, sp) / sizeof(uintptr_t), REG_TEMP0);
|
|
|
|
// Put return type in return value slot
|
|
ASM_MOV_REG_IMM(emit->as, REG_TEMP0, MP_VM_RETURN_NORMAL);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_RET_VAL(emit), REG_TEMP0);
|
|
|
|
// Do the unwinding jump to get to the return handler
|
|
emit_native_unwind_jump(emit, emit->exit_label, emit->exc_stack_size);
|
|
emit->last_emit_was_return_value = true;
|
|
return;
|
|
}
|
|
|
|
if (emit->do_viper_types) {
|
|
vtype_kind_t return_vtype = emit->scope->scope_flags >> MP_SCOPE_FLAG_VIPERRET_POS;
|
|
if (peek_vtype(emit, 0) == VTYPE_PTR_NONE) {
|
|
emit_pre_pop_discard(emit);
|
|
if (return_vtype == VTYPE_PYOBJ) {
|
|
emit_native_mov_reg_const(emit, REG_RET, MP_F_CONST_NONE_OBJ);
|
|
} else {
|
|
ASM_MOV_REG_IMM(emit->as, REG_ARG_1, 0);
|
|
}
|
|
} else {
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, return_vtype == VTYPE_PYOBJ ? REG_RET : REG_ARG_1);
|
|
if (vtype != return_vtype) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit,
|
|
"return expected '%q' but got '%q'",
|
|
vtype_to_qstr(return_vtype), vtype_to_qstr(vtype));
|
|
}
|
|
}
|
|
if (return_vtype != VTYPE_PYOBJ) {
|
|
emit_call_with_imm_arg(emit, MP_F_CONVERT_NATIVE_TO_OBJ, return_vtype, REG_ARG_2);
|
|
}
|
|
} else {
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, REG_RET);
|
|
assert(vtype == VTYPE_PYOBJ);
|
|
}
|
|
if (NEED_GLOBAL_EXC_HANDLER(emit)) {
|
|
// Save return value for the global exception handler to use
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_RET_VAL(emit), REG_RET);
|
|
}
|
|
emit_native_unwind_jump(emit, emit->exit_label, emit->exc_stack_size);
|
|
emit->last_emit_was_return_value = true;
|
|
}
|
|
|
|
STATIC void emit_native_raise_varargs(emit_t *emit, mp_uint_t n_args) {
|
|
assert(n_args == 1);
|
|
vtype_kind_t vtype_exc;
|
|
emit_pre_pop_reg(emit, &vtype_exc, REG_ARG_1); // arg1 = object to raise
|
|
if (vtype_exc != VTYPE_PYOBJ) {
|
|
EMIT_NATIVE_VIPER_TYPE_ERROR(emit, "must raise an object");
|
|
}
|
|
// TODO probably make this 1 call to the runtime (which could even call convert, native_raise(obj, type))
|
|
emit_call(emit, MP_F_NATIVE_RAISE);
|
|
}
|
|
|
|
STATIC void emit_native_yield(emit_t *emit, int kind) {
|
|
// Note: 1 (yield) or 3 (yield from) labels are reserved for this function, starting at *emit->label_slot
|
|
|
|
if (emit->do_viper_types) {
|
|
mp_raise_NotImplementedError("native yield");
|
|
}
|
|
emit->scope->scope_flags |= MP_SCOPE_FLAG_GENERATOR;
|
|
|
|
need_stack_settled(emit);
|
|
|
|
if (kind == MP_EMIT_YIELD_FROM) {
|
|
|
|
// Top of yield-from loop, conceptually implementing:
|
|
// for item in generator:
|
|
// yield item
|
|
|
|
// Jump to start of loop
|
|
emit_native_jump(emit, *emit->label_slot + 2);
|
|
|
|
// Label for top of loop
|
|
emit_native_label_assign(emit, *emit->label_slot + 1);
|
|
}
|
|
|
|
// Save pointer to current stack position for caller to access yielded value
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_TEMP0, 1);
|
|
emit_native_mov_state_reg(emit, offsetof(mp_code_state_t, sp) / sizeof(uintptr_t), REG_TEMP0);
|
|
|
|
// Put return type in return value slot
|
|
ASM_MOV_REG_IMM(emit->as, REG_TEMP0, MP_VM_RETURN_YIELD);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_RET_VAL(emit), REG_TEMP0);
|
|
|
|
// Save re-entry PC
|
|
ASM_MOV_REG_PCREL(emit->as, REG_TEMP0, *emit->label_slot);
|
|
emit_native_mov_state_reg(emit, LOCAL_IDX_GEN_PC(emit), REG_TEMP0);
|
|
|
|
// Jump to exit handler
|
|
ASM_JUMP(emit->as, emit->exit_label);
|
|
|
|
// Label re-entry point
|
|
mp_asm_base_label_assign(&emit->as->base, *emit->label_slot);
|
|
|
|
// Re-open any active exception handler
|
|
if (emit->exc_stack_size > 0) {
|
|
// Find innermost active exception handler, to restore as current handler
|
|
exc_stack_entry_t *e = &emit->exc_stack[emit->exc_stack_size - 1];
|
|
for (; e >= emit->exc_stack; --e) {
|
|
if (e->is_active) {
|
|
// Found active handler, get its PC
|
|
ASM_MOV_REG_PCREL(emit->as, REG_RET, e->label);
|
|
ASM_MOV_LOCAL_REG(emit->as, LOCAL_IDX_EXC_HANDLER_PC(emit), REG_RET);
|
|
}
|
|
}
|
|
}
|
|
|
|
emit_native_adjust_stack_size(emit, 1); // send_value
|
|
|
|
if (kind == MP_EMIT_YIELD_VALUE) {
|
|
// Check LOCAL_IDX_EXC_VAL for any injected value
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_ARG_1, LOCAL_IDX_EXC_VAL(emit));
|
|
emit_call(emit, MP_F_NATIVE_RAISE);
|
|
} else {
|
|
// Label loop entry
|
|
emit_native_label_assign(emit, *emit->label_slot + 2);
|
|
|
|
// Get the next item from the delegate generator
|
|
vtype_kind_t vtype;
|
|
emit_pre_pop_reg(emit, &vtype, REG_ARG_2); // send_value
|
|
emit_access_stack(emit, 1, &vtype, REG_ARG_1); // generator
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_ARG_3, LOCAL_IDX_EXC_VAL(emit)); // throw_value
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_ARG_3);
|
|
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_3, 1); // ret_value
|
|
emit_call(emit, MP_F_NATIVE_YIELD_FROM);
|
|
|
|
// If returned non-zero then generator continues
|
|
ASM_JUMP_IF_REG_NONZERO(emit->as, REG_RET, *emit->label_slot + 1, true);
|
|
|
|
// Pop exhausted gen, replace with ret_value
|
|
emit_native_adjust_stack_size(emit, 1); // ret_value
|
|
emit_fold_stack_top(emit, REG_ARG_1);
|
|
}
|
|
}
|
|
|
|
STATIC void emit_native_start_except_handler(emit_t *emit) {
|
|
// Protected block has finished so leave the current exception handler
|
|
emit_native_leave_exc_stack(emit, true);
|
|
|
|
// Get and push nlr_buf.ret_val
|
|
ASM_MOV_REG_LOCAL(emit->as, REG_TEMP0, LOCAL_IDX_EXC_VAL(emit));
|
|
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_TEMP0);
|
|
}
|
|
|
|
STATIC void emit_native_end_except_handler(emit_t *emit) {
|
|
adjust_stack(emit, -1); // pop the exception (end_finally didn't use it)
|
|
}
|
|
|
|
const emit_method_table_t EXPORT_FUN(method_table) = {
|
|
emit_native_start_pass,
|
|
emit_native_end_pass,
|
|
emit_native_last_emit_was_return_value,
|
|
emit_native_adjust_stack_size,
|
|
emit_native_set_source_line,
|
|
|
|
{
|
|
emit_native_load_local,
|
|
emit_native_load_global,
|
|
},
|
|
{
|
|
emit_native_store_local,
|
|
emit_native_store_global,
|
|
},
|
|
{
|
|
emit_native_delete_local,
|
|
emit_native_delete_global,
|
|
},
|
|
|
|
emit_native_label_assign,
|
|
emit_native_import,
|
|
emit_native_load_const_tok,
|
|
emit_native_load_const_small_int,
|
|
emit_native_load_const_str,
|
|
emit_native_load_const_obj,
|
|
emit_native_load_null,
|
|
emit_native_load_method,
|
|
emit_native_load_build_class,
|
|
emit_native_subscr,
|
|
emit_native_attr,
|
|
emit_native_dup_top,
|
|
emit_native_dup_top_two,
|
|
emit_native_pop_top,
|
|
emit_native_rot_two,
|
|
emit_native_rot_three,
|
|
emit_native_jump,
|
|
emit_native_pop_jump_if,
|
|
emit_native_jump_if_or_pop,
|
|
emit_native_unwind_jump,
|
|
emit_native_setup_block,
|
|
emit_native_with_cleanup,
|
|
emit_native_end_finally,
|
|
emit_native_get_iter,
|
|
emit_native_for_iter,
|
|
emit_native_for_iter_end,
|
|
emit_native_pop_block,
|
|
emit_native_pop_except,
|
|
emit_native_unary_op,
|
|
emit_native_binary_op,
|
|
emit_native_build,
|
|
emit_native_store_map,
|
|
emit_native_store_comp,
|
|
emit_native_unpack_sequence,
|
|
emit_native_unpack_ex,
|
|
emit_native_make_function,
|
|
emit_native_make_closure,
|
|
emit_native_call_function,
|
|
emit_native_call_method,
|
|
emit_native_return_value,
|
|
emit_native_raise_varargs,
|
|
emit_native_yield,
|
|
|
|
emit_native_start_except_handler,
|
|
emit_native_end_except_handler,
|
|
};
|
|
|
|
#endif
|
|
|