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circuitpython/py/emitnative.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// Essentially normal Python has 1 type: Python objects
// Viper has more than 1 type, and is just a more complicated (a superset of) Python.
// If you declare everything in Viper as a Python object (ie omit type decls) then
// it should in principle be exactly the same as Python native.
// Having types means having more opcodes, like binary_op_nat_nat, binary_op_nat_obj etc.
// In practice we won't have a VM but rather do this in asm which is actually very minimal.
// Because it breaks strict Python equivalence it should be a completely separate
// decorator. It breaks equivalence because overflow on integers wraps around.
// It shouldn't break equivalence if you don't use the new types, but since the
// type decls might be used in normal Python for other reasons, it's probably safest,
// cleanest and clearest to make it a separate decorator.
// Actually, it does break equivalence because integers default to native integers,
// not Python objects.
// for x in l[0:8]: can be compiled into a native loop if l has pointer type
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "mpconfig.h"
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "lexer.h"
#include "parse.h"
#include "obj.h"
#include "emitglue.h"
#include "scope.h"
#include "runtime0.h"
#include "emit.h"
#include "runtime.h"
#if 0 // print debugging info
#define DEBUG_PRINT (1)
#define DEBUG_printf DEBUG_printf
#else // don't print debugging info
#define DEBUG_printf(...) (void)0
#endif
// wrapper around everything in this file
#if (MICROPY_EMIT_X64 && N_X64) || (MICROPY_EMIT_THUMB && N_THUMB) || (MICROPY_EMIT_ARM && N_ARM)
#if N_X64
// x64 specific stuff
#include "asmx64.h"
#define REG_LOCAL_1 (REG_RBX)
#define REG_LOCAL_NUM (1)
#define EXPORT_FUN(name) emit_native_x64_##name
#define REG_TEMP0 (REG_RAX)
#define REG_TEMP1 (REG_RDI)
#define REG_TEMP2 (REG_RSI)
#define ASM_MOV_REG_TO_LOCAL(reg, local_num) asm_x64_mov_r64_to_local(emit->as, (reg), (local_num))
#define ASM_MOV_IMM_TO_REG(imm, reg) asm_x64_mov_i64_to_r64_optimised(emit->as, (imm), (reg))
#define ASM_MOV_ALIGNED_IMM_TO_REG(imm, reg) asm_x64_mov_i64_to_r64_aligned(emit->as, (imm), (reg))
#define ASM_MOV_IMM_TO_LOCAL_USING(imm, local_num, reg_temp) do { asm_x64_mov_i64_to_r64_optimised(emit->as, (imm), (reg_temp)); asm_x64_mov_r64_to_local(emit->as, (reg_temp), (local_num)); } while (false)
#define ASM_MOV_LOCAL_TO_REG(local_num, reg) asm_x64_mov_local_to_r64(emit->as, (local_num), (reg))
#define ASM_MOV_REG_TO_REG(reg_src, reg_dest) asm_x64_mov_r64_to_r64(emit->as, (reg_src), (reg_dest))
#define ASM_MOV_LOCAL_ADDR_TO_REG(local_num, reg) asm_x64_mov_local_addr_to_r64(emit->as, (local_num), (reg))
#elif N_THUMB
// thumb specific stuff
#include "asmthumb.h"
#define REG_LOCAL_1 (REG_R4)
#define REG_LOCAL_2 (REG_R5)
#define REG_LOCAL_3 (REG_R6)
#define REG_LOCAL_NUM (3)
#define EXPORT_FUN(name) emit_native_thumb_##name
#define REG_TEMP0 (REG_R0)
#define REG_TEMP1 (REG_R1)
#define REG_TEMP2 (REG_R2)
#define ASM_MOV_REG_TO_LOCAL(reg, local_num) asm_thumb_mov_local_reg(emit->as, (local_num), (reg))
#define ASM_MOV_IMM_TO_REG(imm, reg) asm_thumb_mov_reg_i32_optimised(emit->as, (reg), (imm))
#define ASM_MOV_ALIGNED_IMM_TO_REG(imm, reg) asm_thumb_mov_reg_i32_aligned(emit->as, (reg), (imm))
#define ASM_MOV_IMM_TO_LOCAL_USING(imm, local_num, reg_temp) do { asm_thumb_mov_reg_i32_optimised(emit->as, (reg_temp), (imm)); asm_thumb_mov_local_reg(emit->as, (local_num), (reg_temp)); } while (false)
#define ASM_MOV_LOCAL_TO_REG(local_num, reg) asm_thumb_mov_reg_local(emit->as, (reg), (local_num))
#define ASM_MOV_REG_TO_REG(reg_src, reg_dest) asm_thumb_mov_reg_reg(emit->as, (reg_dest), (reg_src))
#define ASM_MOV_LOCAL_ADDR_TO_REG(local_num, reg) asm_thumb_mov_reg_local_addr(emit->as, (reg), (local_num))
#elif N_ARM
// ARM specific stuff
#include "asmarm.h"
#define REG_LOCAL_1 (REG_R4)
#define REG_LOCAL_2 (REG_R5)
#define REG_LOCAL_3 (REG_R6)
#define REG_LOCAL_NUM (3)
#define EXPORT_FUN(name) emit_native_arm_##name
#define REG_TEMP0 (REG_R0)
#define REG_TEMP1 (REG_R1)
#define REG_TEMP2 (REG_R2)
#define ASM_MOV_REG_TO_LOCAL(reg, local_num) asm_arm_mov_local_reg(emit->as, (local_num), (reg))
#define ASM_MOV_IMM_TO_REG(imm, reg) asm_arm_mov_reg_i32(emit->as, (reg), (imm))
#define ASM_MOV_ALIGNED_IMM_TO_REG(imm, reg) asm_arm_mov_reg_i32(emit->as, (reg), (imm))
#define ASM_MOV_IMM_TO_LOCAL_USING(imm, local_num, reg_temp) do { asm_arm_mov_reg_i32(emit->as, (reg_temp), (imm)); asm_arm_mov_local_reg(emit->as, (local_num), (reg_temp)); } while (false)
#define ASM_MOV_LOCAL_TO_REG(local_num, reg) asm_arm_mov_reg_local(emit->as, (reg), (local_num))
#define ASM_MOV_REG_TO_REG(reg_src, reg_dest) asm_arm_mov_reg_reg(emit->as, (reg_dest), (reg_src))
#define ASM_MOV_LOCAL_ADDR_TO_REG(local_num, reg) asm_arm_mov_reg_local_addr(emit->as, (reg), (local_num))
#endif
typedef enum {
STACK_VALUE,
STACK_REG,
STACK_IMM,
} stack_info_kind_t;
typedef enum {
VTYPE_PYOBJ = MP_NATIVE_TYPE_OBJ,
VTYPE_BOOL = MP_NATIVE_TYPE_BOOL,
VTYPE_INT = MP_NATIVE_TYPE_INT,
VTYPE_UINT = MP_NATIVE_TYPE_UINT,
VTYPE_UNBOUND,
VTYPE_PTR,
VTYPE_PTR_NONE,
VTYPE_BUILTIN_V_INT,
} vtype_kind_t;
typedef struct _stack_info_t {
vtype_kind_t vtype;
stack_info_kind_t kind;
union {
int u_reg;
mp_int_t u_imm;
};
} stack_info_t;
struct _emit_t {
int pass;
bool do_viper_types;
vtype_kind_t return_vtype;
uint local_vtype_alloc;
vtype_kind_t *local_vtype;
uint stack_info_alloc;
stack_info_t *stack_info;
int stack_start;
int stack_size;
bool last_emit_was_return_value;
scope_t *scope;
#if N_X64
asm_x64_t *as;
#elif N_THUMB
asm_thumb_t *as;
#elif N_ARM
asm_arm_t *as;
#endif
};
emit_t *EXPORT_FUN(new)(uint max_num_labels) {
emit_t *emit = m_new0(emit_t, 1);
#if N_X64
emit->as = asm_x64_new(max_num_labels);
#elif N_THUMB
emit->as = asm_thumb_new(max_num_labels);
#elif N_ARM
emit->as = asm_arm_new(max_num_labels);
#endif
return emit;
}
void EXPORT_FUN(free)(emit_t *emit) {
#if N_X64
asm_x64_free(emit->as, false);
#elif N_THUMB
asm_thumb_free(emit->as, false);
#elif N_ARM
asm_arm_free(emit->as, false);
#endif
m_del(vtype_kind_t, emit->local_vtype, emit->local_vtype_alloc);
m_del(stack_info_t, emit->stack_info, emit->stack_info_alloc);
m_del_obj(emit_t, emit);
}
STATIC void emit_native_set_native_type(emit_t *emit, mp_uint_t op, mp_uint_t arg1, qstr arg2) {
switch (op) {
case MP_EMIT_NATIVE_TYPE_ENABLE:
emit->do_viper_types = arg1;
break;
default: {
vtype_kind_t type;
switch (arg2) {
case MP_QSTR_object: type = VTYPE_PYOBJ; break;
case MP_QSTR_bool: type = VTYPE_BOOL; break;
case MP_QSTR_int: type = VTYPE_INT; break;
case MP_QSTR_uint: type = VTYPE_UINT; break;
default: printf("ViperTypeError: unknown type %s\n", qstr_str(arg2)); return;
}
if (op == MP_EMIT_NATIVE_TYPE_RETURN) {
emit->return_vtype = type;
} else {
assert(arg1 < emit->local_vtype_alloc);
emit->local_vtype[arg1] = type;
}
break;
}
}
}
STATIC void emit_native_start_pass(emit_t *emit, pass_kind_t pass, scope_t *scope) {
emit->pass = pass;
emit->stack_start = 0;
emit->stack_size = 0;
emit->last_emit_was_return_value = false;
emit->scope = scope;
// allocate memory for keeping track of the types of locals
if (emit->local_vtype_alloc < scope->num_locals) {
emit->local_vtype = m_renew(vtype_kind_t, emit->local_vtype, emit->local_vtype_alloc, scope->num_locals);
emit->local_vtype_alloc = scope->num_locals;
}
// allocate memory for keeping track of the objects on the stack
// XXX don't know stack size on entry, and it should be maximum over all scopes
if (emit->stack_info == NULL) {
emit->stack_info_alloc = scope->stack_size + 50;
emit->stack_info = m_new(stack_info_t, emit->stack_info_alloc);
}
// set default type for return and arguments
emit->return_vtype = VTYPE_PYOBJ;
for (mp_uint_t i = 0; i < emit->scope->num_pos_args; i++) {
emit->local_vtype[i] = VTYPE_PYOBJ;
}
// local variables begin unbound, and have unknown type
for (mp_uint_t i = emit->scope->num_pos_args; i < emit->local_vtype_alloc; i++) {
emit->local_vtype[i] = VTYPE_UNBOUND;
}
// values on stack begin unbound
for (mp_uint_t i = 0; i < emit->stack_info_alloc; i++) {
emit->stack_info[i].kind = STACK_VALUE;
emit->stack_info[i].vtype = VTYPE_UNBOUND;
}
#if N_X64
asm_x64_start_pass(emit->as, pass == MP_PASS_EMIT ? ASM_X64_PASS_EMIT : ASM_X64_PASS_COMPUTE);
#elif N_THUMB
asm_thumb_start_pass(emit->as, pass == MP_PASS_EMIT ? ASM_THUMB_PASS_EMIT : ASM_THUMB_PASS_COMPUTE);
#elif N_ARM
asm_arm_start_pass(emit->as, pass == MP_PASS_EMIT ? ASM_ARM_PASS_EMIT : ASM_ARM_PASS_COMPUTE);
#endif
// entry to function
int num_locals = 0;
if (pass > MP_PASS_SCOPE) {
num_locals = scope->num_locals - REG_LOCAL_NUM;
if (num_locals < 0) {
num_locals = 0;
}
emit->stack_start = num_locals;
num_locals += scope->stack_size;
}
#if N_X64
asm_x64_entry(emit->as, num_locals);
#elif N_THUMB
asm_thumb_entry(emit->as, num_locals);
#elif N_ARM
asm_arm_entry(emit->as, num_locals);
#endif
// initialise locals from parameters
#if N_X64
for (int i = 0; i < scope->num_pos_args; i++) {
if (i == 0) {
asm_x64_mov_r64_to_r64(emit->as, REG_ARG_1, REG_LOCAL_1);
} else if (i == 1) {
asm_x64_mov_r64_to_local(emit->as, REG_ARG_2, i - REG_LOCAL_NUM);
} else if (i == 2) {
asm_x64_mov_r64_to_local(emit->as, REG_ARG_3, i - REG_LOCAL_NUM);
} else {
// TODO not implemented
assert(0);
}
}
#elif N_THUMB
for (int i = 0; i < scope->num_pos_args; i++) {
if (i == 0) {
asm_thumb_mov_reg_reg(emit->as, REG_LOCAL_1, REG_ARG_1);
} else if (i == 1) {
asm_thumb_mov_reg_reg(emit->as, REG_LOCAL_2, REG_ARG_2);
} else if (i == 2) {
asm_thumb_mov_reg_reg(emit->as, REG_LOCAL_3, REG_ARG_3);
} else if (i == 3) {
asm_thumb_mov_local_reg(emit->as, i - REG_LOCAL_NUM, REG_ARG_4);
} else {
// TODO not implemented
assert(0);
}
}
asm_thumb_mov_reg_i32(emit->as, REG_R7, (mp_uint_t)mp_fun_table);
#elif N_ARM
for (int i = 0; i < scope->num_pos_args; i++) {
if (i == 0) {
asm_arm_mov_reg_reg(emit->as, REG_LOCAL_1, REG_ARG_1);
} else if (i == 1) {
asm_arm_mov_reg_reg(emit->as, REG_LOCAL_2, REG_ARG_2);
} else if (i == 2) {
asm_arm_mov_reg_reg(emit->as, REG_LOCAL_3, REG_ARG_3);
} else if (i == 3) {
asm_arm_mov_local_reg(emit->as, i - REG_LOCAL_NUM, REG_ARG_4);
} else {
// TODO not implemented
assert(0);
}
}
asm_arm_mov_reg_i32(emit->as, REG_R7, (mp_uint_t)mp_fun_table);
#endif
}
STATIC void emit_native_end_pass(emit_t *emit) {
#if N_X64
if (!emit->last_emit_was_return_value) {
asm_x64_exit(emit->as);
}
asm_x64_end_pass(emit->as);
#elif N_THUMB
if (!emit->last_emit_was_return_value) {
asm_thumb_exit(emit->as);
}
asm_thumb_end_pass(emit->as);
#elif N_ARM
if (!emit->last_emit_was_return_value) {
asm_arm_exit(emit->as);
}
asm_arm_end_pass(emit->as);
#endif
// check stack is back to zero size
if (emit->stack_size != 0) {
printf("ERROR: stack size not back to zero; got %d\n", emit->stack_size);
}
if (emit->pass == MP_PASS_EMIT) {
#if N_X64
void *f = asm_x64_get_code(emit->as);
mp_uint_t f_len = asm_x64_get_code_size(emit->as);
#elif N_THUMB
void *f = asm_thumb_get_code(emit->as);
mp_uint_t f_len = asm_thumb_get_code_size(emit->as);
#elif N_ARM
void *f = asm_arm_get_code(emit->as);
mp_uint_t f_len = asm_arm_get_code_size(emit->as);
#endif
// compute type signature
// TODO check that viper types here convert correctly to valid types for emit glue
mp_uint_t type_sig = emit->return_vtype & 3;
for (mp_uint_t i = 0; i < emit->scope->num_pos_args; i++) {
type_sig |= (emit->local_vtype[i] & 3) << (i * 2 + 2);
}
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->scope->num_pos_args, type_sig);
}
}
STATIC bool emit_native_last_emit_was_return_value(emit_t *emit) {
return emit->last_emit_was_return_value;
}
STATIC void emit_native_adjust_stack_size(emit_t *emit, int delta) {
emit->stack_size += delta;
}
STATIC void emit_native_set_source_line(emit_t *emit, int source_line) {
}
STATIC void adjust_stack(emit_t *emit, int stack_size_delta) {
DEBUG_printf("adjust stack: stack:%d + delta:%d\n", emit->stack_size, stack_size_delta);
assert((int)emit->stack_size + stack_size_delta >= 0);
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;
}
}
/*
STATIC void emit_pre_raw(emit_t *emit, int stack_size_delta) {
adjust_stack(emit, stack_size_delta);
emit->last_emit_was_return_value = false;
}
*/
// this must be called at start of emit functions
STATIC void emit_native_pre(emit_t *emit) {
emit->last_emit_was_return_value = false;
// settle the stack
/*
if (regs_needed != 0) {
for (int i = 0; i < emit->stack_size; i++) {
switch (emit->stack_info[i].kind) {
case STACK_VALUE:
break;
case STACK_REG:
// TODO only push reg if in regs_needed
emit->stack_info[i].kind = STACK_VALUE;
ASM_MOV_REG_TO_LOCAL(emit->stack_info[i].u_reg, emit->stack_start + i);
break;
case STACK_IMM:
// don't think we ever need to push imms for settling
//ASM_MOV_IMM_TO_LOCAL(emit->last_imm, emit->stack_start + i);
break;
}
}
}
*/
}
STATIC vtype_kind_t peek_vtype(emit_t *emit) {
return emit->stack_info[emit->stack_size - 1].vtype;
}
// 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->u_reg == reg_needed) {
si->kind = STACK_VALUE;
ASM_MOV_REG_TO_LOCAL(si->u_reg, emit->stack_start + i);
}
}
}
}
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;
ASM_MOV_REG_TO_LOCAL(si->u_reg, emit->stack_start + i);
}
}
}
STATIC void need_stack_settled(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;
ASM_MOV_REG_TO_LOCAL(si->u_reg, emit->stack_start + i);
}
}
for (int i = 0; i < emit->stack_size; i++) {
stack_info_t *si = &emit->stack_info[i];
if (si->kind == STACK_IMM) {
si->kind = STACK_VALUE;
ASM_MOV_IMM_TO_LOCAL_USING(si->u_imm, 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:
ASM_MOV_LOCAL_TO_REG(emit->stack_start + emit->stack_size - pos, reg_dest);
break;
case STACK_REG:
if (si->u_reg != reg_dest) {
ASM_MOV_REG_TO_REG(si->u_reg, reg_dest);
}
break;
case STACK_IMM:
ASM_MOV_IMM_TO_REG(si->u_imm, reg_dest);
break;
}
}
STATIC void emit_pre_pop_discard(emit_t *emit, vtype_kind_t *vtype) {
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) {
}
STATIC void emit_post_push_reg(emit_t *emit, vtype_kind_t vtype, int reg) {
stack_info_t *si = &emit->stack_info[emit->stack_size];
si->vtype = vtype;
si->kind = STACK_REG;
si->u_reg = reg;
adjust_stack(emit, 1);
}
STATIC void emit_post_push_imm(emit_t *emit, vtype_kind_t vtype, mp_int_t imm) {
stack_info_t *si = &emit->stack_info[emit->stack_size];
si->vtype = vtype;
si->kind = STACK_IMM;
si->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);
#if N_X64
asm_x64_call_ind(emit->as, mp_fun_table[fun_kind], REG_RAX);
#elif N_THUMB
asm_thumb_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#elif N_ARM
asm_arm_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#endif
}
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_IMM_TO_REG(arg_val, arg_reg);
#if N_X64
asm_x64_call_ind(emit->as, mp_fun_table[fun_kind], REG_RAX);
#elif N_THUMB
asm_thumb_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#elif N_ARM
asm_arm_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#endif
}
// the first arg is stored in the code aligned on a mp_uint_t boundary
STATIC void emit_call_with_imm_arg_aligned(emit_t *emit, mp_fun_kind_t fun_kind, mp_int_t arg_val, int arg_reg) {
need_reg_all(emit);
ASM_MOV_ALIGNED_IMM_TO_REG(arg_val, arg_reg);
#if N_X64
asm_x64_call_ind(emit->as, mp_fun_table[fun_kind], REG_RAX);
#elif N_THUMB
asm_thumb_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#elif N_ARM
asm_arm_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#endif
}
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_IMM_TO_REG(arg_val1, arg_reg1);
ASM_MOV_IMM_TO_REG(arg_val2, arg_reg2);
#if N_X64
asm_x64_call_ind(emit->as, mp_fun_table[fun_kind], REG_RAX);
#elif N_THUMB
asm_thumb_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#elif N_ARM
asm_arm_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#endif
}
// the first arg is stored in the code aligned on a mp_uint_t boundary
STATIC void emit_call_with_3_imm_args_and_first_aligned(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, mp_int_t arg_val3, int arg_reg3) {
need_reg_all(emit);
ASM_MOV_ALIGNED_IMM_TO_REG(arg_val1, arg_reg1);
ASM_MOV_IMM_TO_REG(arg_val2, arg_reg2);
ASM_MOV_IMM_TO_REG(arg_val3, arg_reg3);
#if N_X64
asm_x64_call_ind(emit->as, mp_fun_table[fun_kind], REG_RAX);
#elif N_THUMB
asm_thumb_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#elif N_ARM
asm_arm_bl_ind(emit->as, mp_fun_table[fun_kind], fun_kind, REG_R3);
#endif
}
// 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;
switch (si->vtype) {
case VTYPE_PYOBJ:
ASM_MOV_IMM_TO_LOCAL_USING(si->u_imm, emit->stack_start + emit->stack_size - 1 - i, reg_dest);
break;
case VTYPE_BOOL:
if (si->u_imm == 0) {
ASM_MOV_IMM_TO_LOCAL_USING((mp_uint_t)mp_const_false, emit->stack_start + emit->stack_size - 1 - i, reg_dest);
} else {
ASM_MOV_IMM_TO_LOCAL_USING((mp_uint_t)mp_const_true, emit->stack_start + emit->stack_size - 1 - i, reg_dest);
}
si->vtype = VTYPE_PYOBJ;
break;
case VTYPE_INT:
case VTYPE_UINT:
ASM_MOV_IMM_TO_LOCAL_USING((si->u_imm << 1) | 1, emit->stack_start + emit->stack_size - 1 - i, reg_dest);
si->vtype = VTYPE_PYOBJ;
break;
default:
// not handled
assert(0);
}
}
// 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;
ASM_MOV_LOCAL_TO_REG(local_num, REG_ARG_1);
emit_call_with_imm_arg(emit, MP_F_CONVERT_NATIVE_TO_OBJ, si->vtype, REG_ARG_2); // arg2 = type
ASM_MOV_REG_TO_LOCAL(REG_RET, local_num);
si->vtype = VTYPE_PYOBJ;
}
}
// Adujust the stack for a pop of n_pop items, and load the stack pointer into reg_dest.
adjust_stack(emit, -n_pop);
ASM_MOV_LOCAL_ADDR_TO_REG(emit->stack_start + emit->stack_size, reg_dest);
}
// 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);
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;
}
ASM_MOV_LOCAL_ADDR_TO_REG(emit->stack_start + emit->stack_size, reg_dest);
adjust_stack(emit, n_push);
}
STATIC void emit_native_load_id(emit_t *emit, qstr qstr) {
emit_common_load_id(emit, &EXPORT_FUN(method_table), emit->scope, qstr);
}
STATIC void emit_native_store_id(emit_t *emit, qstr qstr) {
emit_common_store_id(emit, &EXPORT_FUN(method_table), emit->scope, qstr);
}
STATIC void emit_native_delete_id(emit_t *emit, qstr qstr) {
emit_common_delete_id(emit, &EXPORT_FUN(method_table), emit->scope, qstr);
}
STATIC void emit_native_label_assign(emit_t *emit, uint l) {
emit_native_pre(emit);
// need to commit stack because we can jump here from elsewhere
need_stack_settled(emit);
#if N_X64
asm_x64_label_assign(emit->as, l);
#elif N_THUMB
asm_thumb_label_assign(emit->as, l);
#elif N_ARM
asm_arm_label_assign(emit->as, l);
#endif
emit_post(emit);
}
STATIC void emit_native_import_name(emit_t *emit, qstr qst) {
DEBUG_printf("import_name %s\n", qstr_str(qst));
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); // arg2 = fromlist, arg3 = level
assert(vtype_fromlist == VTYPE_PYOBJ);
assert(vtype_level == VTYPE_PYOBJ);
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_load_const_tok(emit_t *emit, mp_token_kind_t tok) {
DEBUG_printf("load_const_tok %d\n", tok);
emit_native_pre(emit);
int vtype;
mp_uint_t val;
if (emit->do_viper_types) {
switch (tok) {
case MP_TOKEN_KW_NONE: vtype = VTYPE_PTR_NONE; val = 0; break;
case MP_TOKEN_KW_FALSE: vtype = VTYPE_BOOL; val = 0; break;
case MP_TOKEN_KW_TRUE: vtype = VTYPE_BOOL; val = 1; break;
default: assert(0); vtype = 0; val = 0; // shouldn't happen
}
} else {
vtype = VTYPE_PYOBJ;
switch (tok) {
case MP_TOKEN_KW_NONE: val = (mp_uint_t)mp_const_none; break;
case MP_TOKEN_KW_FALSE: val = (mp_uint_t)mp_const_false; break;
case MP_TOKEN_KW_TRUE: val = (mp_uint_t)mp_const_true; break;
default: assert(0); vtype = 0; val = 0; // shouldn't happen
}
}
emit_post_push_imm(emit, vtype, val);
}
STATIC void emit_native_load_const_small_int(emit_t *emit, mp_int_t arg) {
DEBUG_printf("load_const_small_int %d\n", arg);
emit_native_pre(emit);
if (emit->do_viper_types) {
emit_post_push_imm(emit, VTYPE_INT, arg);
} else {
emit_post_push_imm(emit, VTYPE_PYOBJ, (arg << 1) | 1);
}
}
STATIC void emit_native_load_const_int(emit_t *emit, qstr qst) {
DEBUG_printf("load_const_int %s\n", qstr_str(st));
// for viper: load integer, check fits in 32 bits
emit_native_pre(emit);
emit_call_with_imm_arg(emit, MP_F_LOAD_CONST_INT, qst, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_load_const_dec(emit_t *emit, qstr qstr) {
// for viper, a float/complex is just a Python object
emit_native_pre(emit);
emit_call_with_imm_arg(emit, MP_F_LOAD_CONST_DEC, qstr, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_load_const_str(emit_t *emit, qstr qstr, bool bytes) {
emit_native_pre(emit);
if (emit->do_viper_types) {
// not implemented properly
// load a pointer to the asciiz string?
assert(0);
emit_post_push_imm(emit, VTYPE_PTR, (mp_uint_t)qstr_str(qstr));
} else {
if (bytes) {
emit_call_with_imm_arg(emit, MP_F_LOAD_CONST_BYTES, qstr, REG_ARG_1);
} else {
emit_call_with_imm_arg(emit, MP_F_LOAD_CONST_STR, qstr, REG_ARG_1);
}
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 qstr, uint id_flags, int local_num) {
vtype_kind_t vtype = emit->local_vtype[local_num];
if (vtype == VTYPE_UNBOUND) {
printf("ViperTypeError: local %s used before type known\n", qstr_str(qstr));
}
emit_native_pre(emit);
#if N_X64
if (local_num == 0) {
emit_post_push_reg(emit, vtype, REG_LOCAL_1);
} else {
need_reg_single(emit, REG_RAX, 0);
asm_x64_mov_local_to_r64(emit->as, local_num - REG_LOCAL_NUM, REG_RAX);
emit_post_push_reg(emit, vtype, REG_RAX);
}
#elif N_THUMB
if (local_num == 0) {
emit_post_push_reg(emit, vtype, REG_LOCAL_1);
} else if (local_num == 1) {
emit_post_push_reg(emit, vtype, REG_LOCAL_2);
} else if (local_num == 2) {
emit_post_push_reg(emit, vtype, REG_LOCAL_3);
} else {
need_reg_single(emit, REG_R0, 0);
asm_thumb_mov_reg_local(emit->as, REG_R0, local_num - REG_LOCAL_NUM);
emit_post_push_reg(emit, vtype, REG_R0);
}
#elif N_ARM
if (local_num == 0) {
emit_post_push_reg(emit, vtype, REG_LOCAL_1);
} else if (local_num == 1) {
emit_post_push_reg(emit, vtype, REG_LOCAL_2);
} else if (local_num == 2) {
emit_post_push_reg(emit, vtype, REG_LOCAL_3);
} else {
need_reg_single(emit, REG_R0, 0);
asm_arm_mov_reg_local(emit->as, REG_R0, local_num - REG_LOCAL_NUM);
emit_post_push_reg(emit, vtype, REG_R0);
}
#endif
}
STATIC void emit_native_load_deref(emit_t *emit, qstr qstr, int local_num) {
// not implemented
// in principle could support this quite easily (ldr r0, [r0, #0]) and then get closed over variables!
assert(0);
}
STATIC void emit_native_load_name(emit_t *emit, qstr qstr) {
emit_native_pre(emit);
emit_call_with_imm_arg(emit, MP_F_LOAD_NAME, qstr, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_load_global(emit_t *emit, qstr qstr) {
emit_native_pre(emit);
emit_call_with_imm_arg(emit, MP_F_LOAD_GLOBAL, qstr, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_load_attr(emit_t *emit, qstr qstr) {
// 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, qstr, 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 qstr) {
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, qstr, 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) {
vtype_kind_t vtype_lhs, vtype_rhs;
emit_pre_pop_reg_reg(emit, &vtype_rhs, REG_ARG_2, &vtype_lhs, REG_ARG_1);
if (vtype_lhs == VTYPE_PYOBJ && vtype_rhs == VTYPE_PYOBJ) {
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 {
printf("ViperTypeError: can't do subscr of types %d and %d\n", vtype_lhs, vtype_rhs);
}
}
STATIC void emit_native_store_fast(emit_t *emit, qstr qstr, int local_num) {
vtype_kind_t vtype;
#if N_X64
if (local_num == 0) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_1);
} else {
emit_pre_pop_reg(emit, &vtype, REG_RAX);
asm_x64_mov_r64_to_local(emit->as, REG_RAX, local_num - REG_LOCAL_NUM);
}
#elif N_THUMB
if (local_num == 0) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_1);
} else if (local_num == 1) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_2);
} else if (local_num == 2) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_3);
} else {
emit_pre_pop_reg(emit, &vtype, REG_R0);
asm_thumb_mov_local_reg(emit->as, local_num - REG_LOCAL_NUM, REG_R0);
}
#elif N_ARM
if (local_num == 0) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_1);
} else if (local_num == 1) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_2);
} else if (local_num == 2) {
emit_pre_pop_reg(emit, &vtype, REG_LOCAL_3);
} else {
emit_pre_pop_reg(emit, &vtype, REG_R0);
asm_arm_mov_local_reg(emit->as, local_num - REG_LOCAL_NUM, REG_R0);
}
#endif
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
printf("ViperTypeError: type mismatch, local %s has type %d but source object has type %d\n", qstr_str(qstr), emit->local_vtype[local_num], vtype);
}
}
STATIC void emit_native_store_deref(emit_t *emit, qstr qstr, int local_num) {
// not implemented
assert(0);
}
STATIC void emit_native_store_name(emit_t *emit, qstr qstr) {
// 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);
emit_call_with_imm_arg(emit, MP_F_STORE_NAME, qstr, REG_ARG_1); // arg1 = name
emit_post(emit);
}
STATIC void emit_native_store_global(emit_t *emit, qstr qstr) {
vtype_kind_t vtype = peek_vtype(emit);
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_TO_REG(REG_RET, REG_ARG_2);
}
emit_call_with_imm_arg(emit, MP_F_STORE_GLOBAL, qstr, REG_ARG_1); // arg1 = name
emit_post(emit);
}
STATIC void emit_native_store_attr(emit_t *emit, qstr qstr) {
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, qstr, REG_ARG_2); // arg2 = attribute name
emit_post(emit);
}
STATIC void emit_native_store_subscr(emit_t *emit) {
// depends on type of subject:
// - integer, function, pointer to structure: error
// - pointer to integers: store as per array
// - Python object: call runtime with converted object or type info
vtype_kind_t vtype_index, vtype_base, vtype_value;
emit_pre_pop_reg_reg_reg(emit, &vtype_index, REG_ARG_2, &vtype_base, REG_ARG_1, &vtype_value, REG_ARG_3); // index, base, value to store
assert(vtype_index == VTYPE_PYOBJ);
assert(vtype_base == VTYPE_PYOBJ);
assert(vtype_value == VTYPE_PYOBJ);
emit_call(emit, MP_F_OBJ_SUBSCR);
}
STATIC void emit_native_delete_fast(emit_t *emit, qstr qstr, int local_num) {
// not implemented
// could support for Python types, just set to None (so GC can reclaim it)
assert(0);
}
STATIC void emit_native_delete_deref(emit_t *emit, qstr qstr, int local_num) {
// not supported
assert(0);
}
STATIC void emit_native_delete_name(emit_t *emit, qstr qstr) {
// not implemented
// use mp_delete_name
assert(0);
}
STATIC void emit_native_delete_global(emit_t *emit, qstr qstr) {
// not implemented
// use mp_delete_global
assert(0);
}
STATIC void emit_native_delete_attr(emit_t *emit, qstr qstr) {
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, qstr, 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_dup_top(emit_t *emit) {
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_TEMP0);
emit_post_push_reg_reg(emit, vtype, REG_TEMP0, vtype, REG_TEMP0);
}
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) {
vtype_kind_t vtype;
emit_pre_pop_discard(emit, &vtype);
emit_post(emit);
}
STATIC void emit_native_rot_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(emit, vtype0, REG_TEMP0, vtype1, REG_TEMP1);
}
STATIC void emit_native_rot_three(emit_t *emit) {
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, uint label) {
emit_native_pre(emit);
// need to commit stack because we are jumping elsewhere
need_stack_settled(emit);
#if N_X64
asm_x64_jmp_label(emit->as, label);
#elif N_THUMB
asm_thumb_b_label(emit->as, label);
#elif N_ARM
asm_arm_b_label(emit->as, label);
#endif
emit_post(emit);
}
STATIC void emit_native_jump_helper(emit_t *emit, uint label, bool pop) {
vtype_kind_t vtype = peek_vtype(emit);
if (vtype == VTYPE_BOOL) {
emit_pre_pop_reg(emit, &vtype, REG_RET);
if (!pop) {
adjust_stack(emit, 1);
}
} else 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 {
printf("ViperTypeError: expecting a bool or pyobj, got %d\n", vtype);
assert(0);
}
// need to commit stack because we may jump elsewhere
need_stack_settled(emit);
}
STATIC void emit_native_pop_jump_if_true(emit_t *emit, uint label) {
emit_native_jump_helper(emit, label, true);
#if N_X64
asm_x64_test_r8_with_r8(emit->as, REG_RET, REG_RET);
asm_x64_jcc_label(emit->as, JCC_JNZ, label);
#elif N_THUMB
asm_thumb_cmp_rlo_i8(emit->as, REG_RET, 0);
asm_thumb_bcc_label(emit->as, THUMB_CC_NE, label);
#elif N_ARM
asm_arm_cmp_reg_i8(emit->as, REG_RET, 0);
asm_arm_bcc_label(emit->as, ARM_CC_NE, label);
#endif
emit_post(emit);
}
STATIC void emit_native_pop_jump_if_false(emit_t *emit, uint label) {
emit_native_jump_helper(emit, label, true);
#if N_X64
asm_x64_test_r8_with_r8(emit->as, REG_RET, REG_RET);
asm_x64_jcc_label(emit->as, JCC_JZ, label);
#elif N_THUMB
asm_thumb_cmp_rlo_i8(emit->as, REG_RET, 0);
asm_thumb_bcc_label(emit->as, THUMB_CC_EQ, label);
#elif N_ARM
asm_arm_cmp_reg_i8(emit->as, REG_RET, 0);
asm_arm_bcc_label(emit->as, ARM_CC_EQ, label);
#endif
emit_post(emit);
}
STATIC void emit_native_jump_if_true_or_pop(emit_t *emit, uint label) {
emit_native_jump_helper(emit, label, false);
#if N_X64
asm_x64_test_r8_with_r8(emit->as, REG_RET, REG_RET);
asm_x64_jcc_label(emit->as, JCC_JNZ, label);
#elif N_THUMB
asm_thumb_cmp_rlo_i8(emit->as, REG_RET, 0);
asm_thumb_bcc_label(emit->as, THUMB_CC_NE, label);
#elif N_ARM
asm_arm_cmp_reg_i8(emit->as, REG_RET, 0);
asm_arm_bcc_label(emit->as, ARM_CC_NE, label);
#endif
adjust_stack(emit, -1);
emit_post(emit);
}
STATIC void emit_native_jump_if_false_or_pop(emit_t *emit, uint label) {
emit_native_jump_helper(emit, label, false);
#if N_X64
asm_x64_test_r8_with_r8(emit->as, REG_RET, REG_RET);
asm_x64_jcc_label(emit->as, JCC_JZ, label);
#elif N_THUMB
asm_thumb_cmp_rlo_i8(emit->as, REG_RET, 0);
asm_thumb_bcc_label(emit->as, THUMB_CC_EQ, label);
#elif N_ARM
asm_arm_cmp_reg_i8(emit->as, REG_RET, 0);
asm_arm_bcc_label(emit->as, ARM_CC_EQ, label);
#endif
adjust_stack(emit, -1);
emit_post(emit);
}
STATIC void emit_native_break_loop(emit_t *emit, uint label, int except_depth) {
emit_native_jump(emit, label & ~MP_EMIT_BREAK_FROM_FOR); // TODO properly
}
STATIC void emit_native_continue_loop(emit_t *emit, uint label, int except_depth) {
emit_native_jump(emit, label); // TODO properly
}
STATIC void emit_native_setup_with(emit_t *emit, uint label) {
// not supported, or could be with runtime call
assert(0);
}
STATIC void emit_native_with_cleanup(emit_t *emit) {
assert(0);
}
STATIC void emit_native_setup_except(emit_t *emit, uint label) {
emit_native_pre(emit);
// need to commit stack because we may jump elsewhere
need_stack_settled(emit);
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_1, sizeof(nlr_buf_t) / sizeof(mp_uint_t)); // arg1 = pointer to nlr buf
emit_call(emit, MP_F_NLR_PUSH);
#if N_X64
asm_x64_test_r8_with_r8(emit->as, REG_RET, REG_RET);
asm_x64_jcc_label(emit->as, JCC_JNZ, label);
#elif N_THUMB
asm_thumb_cmp_rlo_i8(emit->as, REG_RET, 0);
asm_thumb_bcc_label(emit->as, THUMB_CC_NE, label);
#elif N_ARM
asm_arm_cmp_reg_i8(emit->as, REG_RET, 0);
asm_arm_bcc_label(emit->as, ARM_CC_NE, label);
#endif
emit_post(emit);
}
STATIC void emit_native_setup_finally(emit_t *emit, uint label) {
assert(0);
}
STATIC void emit_native_end_finally(emit_t *emit) {
//assert(0);
}
STATIC void emit_native_get_iter(emit_t *emit) {
// 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);
emit_call(emit, MP_F_GETITER);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_for_iter(emit_t *emit, uint label) {
emit_native_pre(emit);
vtype_kind_t vtype;
emit_access_stack(emit, 1, &vtype, REG_ARG_1);
assert(vtype == VTYPE_PYOBJ);
emit_call(emit, MP_F_ITERNEXT);
ASM_MOV_IMM_TO_REG((mp_uint_t)MP_OBJ_STOP_ITERATION, REG_TEMP1);
#if N_X64
asm_x64_cmp_r64_with_r64(emit->as, REG_RET, REG_TEMP1);
asm_x64_jcc_label(emit->as, JCC_JE, label);
#elif N_THUMB
asm_thumb_cmp_rlo_rlo(emit->as, REG_RET, REG_TEMP1);
asm_thumb_bcc_label(emit->as, THUMB_CC_EQ, label);
#elif N_ARM
asm_arm_cmp_reg_i8(emit->as, REG_RET, 0);
asm_arm_bcc_label(emit->as, ARM_CC_EQ, 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, -1);
emit_post(emit);
}
STATIC void emit_native_pop_block(emit_t *emit) {
emit_native_pre(emit);
emit_call(emit, MP_F_NLR_POP);
adjust_stack(emit, -(mp_int_t)(sizeof(nlr_buf_t) / sizeof(mp_uint_t)));
emit_post(emit);
}
STATIC void emit_native_pop_except(emit_t *emit) {
/*
emit_native_pre(emit);
emit_call(emit, MP_F_NLR_POP);
adjust_stack(emit, -(mp_int_t)(sizeof(nlr_buf_t) / sizeof(mp_uint_t)));
emit_post(emit);
*/
}
STATIC void emit_native_unary_op(emit_t *emit, mp_unary_op_t op) {
if (op == MP_UNARY_OP_NOT) {
// we need to synthesise this operation
assert(0);
} else {
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_ARG_2);
assert(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);
}
}
STATIC void emit_native_binary_op(emit_t *emit, mp_binary_op_t op) {
vtype_kind_t vtype_lhs, vtype_rhs;
emit_pre_pop_reg_reg(emit, &vtype_rhs, REG_ARG_3, &vtype_lhs, REG_ARG_2);
if (vtype_lhs == VTYPE_INT && vtype_rhs == VTYPE_INT) {
if (op == MP_BINARY_OP_ADD || op == MP_BINARY_OP_INPLACE_ADD) {
#if N_X64
asm_x64_add_r64_to_r64(emit->as, REG_ARG_3, REG_ARG_2);
#elif N_THUMB
asm_thumb_add_rlo_rlo_rlo(emit->as, REG_ARG_2, REG_ARG_2, REG_ARG_3);
#elif N_ARM
asm_arm_add_reg(emit->as, REG_ARG_2, REG_ARG_2, REG_ARG_3);
#endif
emit_post_push_reg(emit, VTYPE_INT, REG_ARG_2);
} else if (op == MP_BINARY_OP_LESS) {
#if N_X64
asm_x64_xor_r64_to_r64(emit->as, REG_RET, REG_RET);
asm_x64_cmp_r64_with_r64(emit->as, REG_ARG_3, REG_ARG_2);
asm_x64_setcc_r8(emit->as, JCC_JL, REG_RET);
#elif N_THUMB
asm_thumb_cmp_rlo_rlo(emit->as, REG_ARG_2, REG_ARG_3);
asm_thumb_ite_ge(emit->as);
asm_thumb_mov_rlo_i8(emit->as, REG_RET, 0); // if r0 >= r1
asm_thumb_mov_rlo_i8(emit->as, REG_RET, 1); // if r0 < r1
#elif N_ARM
asm_arm_less_op(emit->as, REG_ARG_2, REG_ARG_3);
#endif
emit_post_push_reg(emit, VTYPE_BOOL, REG_RET);
} else {
// TODO other ops not yet implemented
assert(0);
}
} else if (vtype_lhs == VTYPE_PYOBJ && vtype_rhs == VTYPE_PYOBJ) {
emit_call_with_imm_arg(emit, MP_F_BINARY_OP, op, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
} else {
printf("ViperTypeError: can't do binary op between types %d and %d\n", vtype_lhs, vtype_rhs);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
}
STATIC void emit_native_build_tuple(emit_t *emit, int n_args) {
// for viper: call runtime, with types of args
// if wrapped in byte_array, or something, allocates memory and fills it
emit_native_pre(emit);
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_args); // pointer to items
emit_call_with_imm_arg(emit, MP_F_BUILD_TUPLE, n_args, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new tuple
}
STATIC void emit_native_build_list(emit_t *emit, int n_args) {
emit_native_pre(emit);
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_args); // pointer to items
emit_call_with_imm_arg(emit, MP_F_BUILD_LIST, n_args, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new list
}
STATIC void emit_native_list_append(emit_t *emit, int list_index) {
// only used in list comprehension
vtype_kind_t vtype_list, vtype_item;
emit_pre_pop_reg(emit, &vtype_item, REG_ARG_2);
emit_access_stack(emit, list_index, &vtype_list, REG_ARG_1);
assert(vtype_list == VTYPE_PYOBJ);
assert(vtype_item == VTYPE_PYOBJ);
emit_call(emit, MP_F_LIST_APPEND);
emit_post(emit);
}
STATIC void emit_native_build_map(emit_t *emit, int n_args) {
emit_native_pre(emit);
emit_call_with_imm_arg(emit, MP_F_BUILD_MAP, n_args, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new map
}
STATIC void emit_native_store_map(emit_t *emit) {
vtype_kind_t vtype_key, vtype_value, vtype_map;
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
assert(vtype_key == VTYPE_PYOBJ);
assert(vtype_value == VTYPE_PYOBJ);
assert(vtype_map == VTYPE_PYOBJ);
emit_call(emit, MP_F_STORE_MAP);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // map
}
STATIC void emit_native_map_add(emit_t *emit, int map_index) {
// only used in list comprehension
vtype_kind_t vtype_map, vtype_key, vtype_value;
emit_pre_pop_reg_reg(emit, &vtype_key, REG_ARG_2, &vtype_value, REG_ARG_3);
emit_access_stack(emit, map_index, &vtype_map, REG_ARG_1);
assert(vtype_map == VTYPE_PYOBJ);
assert(vtype_key == VTYPE_PYOBJ);
assert(vtype_value == VTYPE_PYOBJ);
emit_call(emit, MP_F_STORE_MAP);
emit_post(emit);
}
STATIC void emit_native_build_set(emit_t *emit, int n_args) {
emit_native_pre(emit);
emit_get_stack_pointer_to_reg_for_pop(emit, REG_ARG_2, n_args); // pointer to items
emit_call_with_imm_arg(emit, MP_F_BUILD_SET, n_args, REG_ARG_1);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET); // new set
}
STATIC void emit_native_set_add(emit_t *emit, int set_index) {
// only used in set comprehension
vtype_kind_t vtype_set, vtype_item;
emit_pre_pop_reg(emit, &vtype_item, REG_ARG_2);
emit_access_stack(emit, set_index, &vtype_set, REG_ARG_1);
assert(vtype_set == VTYPE_PYOBJ);
assert(vtype_item == VTYPE_PYOBJ);
emit_call(emit, MP_F_STORE_SET);
emit_post(emit);
}
STATIC void emit_native_build_slice(emit_t *emit, int n_args) {
DEBUG_printf("build_slice %d\n", n_args);
if (n_args == 2) {
vtype_kind_t vtype_start, vtype_stop;
emit_pre_pop_reg_reg(emit, &vtype_stop, REG_ARG_2, &vtype_start, REG_ARG_1); // arg1 = start, arg2 = stop
assert(vtype_start == VTYPE_PYOBJ);
assert(vtype_stop == VTYPE_PYOBJ);
emit_call_with_imm_arg(emit, MP_F_NEW_SLICE, (mp_uint_t)mp_const_none, REG_ARG_3); // arg3 = step
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
} else {
assert(n_args == 3);
vtype_kind_t vtype_start, vtype_stop, vtype_step;
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
assert(vtype_start == VTYPE_PYOBJ);
assert(vtype_stop == VTYPE_PYOBJ);
assert(vtype_step == VTYPE_PYOBJ);
emit_call(emit, MP_F_NEW_SLICE);
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
}
STATIC void emit_native_unpack_sequence(emit_t *emit, int n_args) {
DEBUG_printf("unpack_sequence %d\n", n_args);
vtype_kind_t vtype_base;
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = seq
assert(vtype_base == VTYPE_PYOBJ);
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, n_args); // arg3 = dest ptr
emit_call_with_imm_arg(emit, MP_F_UNPACK_SEQUENCE, n_args, REG_ARG_2); // arg2 = n_args
}
STATIC void emit_native_unpack_ex(emit_t *emit, int n_left, int n_right) {
DEBUG_printf("unpack_ex %d %d\n", n_left, n_right);
vtype_kind_t vtype_base;
emit_pre_pop_reg(emit, &vtype_base, REG_ARG_1); // arg1 = seq
assert(vtype_base == VTYPE_PYOBJ);
emit_get_stack_pointer_to_reg_for_push(emit, REG_ARG_3, n_left + n_right + 1); // arg3 = dest ptr
emit_call_with_imm_arg(emit, MP_F_UNPACK_EX, n_left | (n_right << 8), REG_ARG_2); // arg2 = n_left + n_right
}
STATIC void emit_native_make_function(emit_t *emit, scope_t *scope, uint n_pos_defaults, uint n_kw_defaults) {
// 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);
if (n_pos_defaults == 0 && n_kw_defaults == 0) {
emit_call_with_3_imm_args_and_first_aligned(emit, MP_F_MAKE_FUNCTION_FROM_RAW_CODE, (mp_uint_t)scope->raw_code, REG_ARG_1, (mp_uint_t)MP_OBJ_NULL, REG_ARG_2, (mp_uint_t)MP_OBJ_NULL, REG_ARG_3);
} else {
vtype_kind_t vtype_def_tuple, vtype_def_dict;
emit_pre_pop_reg_reg(emit, &vtype_def_dict, REG_ARG_3, &vtype_def_tuple, REG_ARG_2);
assert(vtype_def_tuple == VTYPE_PYOBJ);
assert(vtype_def_dict == VTYPE_PYOBJ);
emit_call_with_imm_arg_aligned(emit, MP_F_MAKE_FUNCTION_FROM_RAW_CODE, (mp_uint_t)scope->raw_code, REG_ARG_1);
}
emit_post_push_reg(emit, VTYPE_PYOBJ, REG_RET);
}
STATIC void emit_native_make_closure(emit_t *emit, scope_t *scope, uint n_closed_over, uint n_pos_defaults, uint n_kw_defaults) {
assert(0);
}
STATIC void emit_native_call_function(emit_t *emit, int n_positional, int n_keyword, uint star_flags) {
// call special viper runtime routine with type info for args, and wanted type info for return
assert(!star_flags);
/* we no longer have these _n specific call_function's
* they anyway push args into an array
* and they would take too much room in the native dispatch table
if (n_positional == 0) {
vtype_kind_t vtype_fun;
emit_pre_pop_reg(emit, &vtype_fun, REG_ARG_1); // the function
assert(vtype_fun == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_FUNCTION_0);
} else if (n_positional == 1) {
vtype_kind_t vtype_fun, vtype_arg1;
emit_pre_pop_reg_reg(emit, &vtype_arg1, REG_ARG_2, &vtype_fun, REG_ARG_1); // the single argument, the function
assert(vtype_fun == VTYPE_PYOBJ);
assert(vtype_arg1 == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_FUNCTION_1);
} else if (n_positional == 2) {
vtype_kind_t vtype_fun, vtype_arg1, vtype_arg2;
emit_pre_pop_reg_reg_reg(emit, &vtype_arg2, REG_ARG_3, &vtype_arg1, REG_ARG_2, &vtype_fun, REG_ARG_1); // the second argument, the first argument, the function
assert(vtype_fun == VTYPE_PYOBJ);
assert(vtype_arg1 == VTYPE_PYOBJ);
assert(vtype_arg2 == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_FUNCTION_2);
} else {
*/
emit_native_pre(emit);
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
}
vtype_kind_t vtype_fun;
emit_pre_pop_reg(emit, &vtype_fun, REG_ARG_1); // the function
assert(vtype_fun == VTYPE_PYOBJ);
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);
}
STATIC void emit_native_call_method(emit_t *emit, int n_positional, int n_keyword, uint star_flags) {
assert(!star_flags);
/*
if (n_positional == 0) {
vtype_kind_t vtype_meth, vtype_self;
emit_pre_pop_reg_reg(emit, &vtype_self, REG_ARG_2, &vtype_meth, REG_ARG_1); // the self object (or NULL), the method
assert(vtype_meth == VTYPE_PYOBJ);
assert(vtype_self == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_METHOD_1);
} else if (n_positional == 1) {
vtype_kind_t vtype_meth, vtype_self, vtype_arg1;
emit_pre_pop_reg_reg_reg(emit, &vtype_arg1, REG_ARG_3, &vtype_self, REG_ARG_2, &vtype_meth, REG_ARG_1); // the first argument, the self object (or NULL), the method
assert(vtype_meth == VTYPE_PYOBJ);
assert(vtype_self == VTYPE_PYOBJ);
assert(vtype_arg1 == VTYPE_PYOBJ);
emit_call(emit, MP_F_CALL_METHOD_2);
} 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");
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_RET);
if (emit->do_viper_types) {
if (vtype == VTYPE_PTR_NONE) {
if (emit->return_vtype == VTYPE_PYOBJ) {
ASM_MOV_IMM_TO_REG((mp_uint_t)mp_const_none, REG_RET);
}
} else if (vtype != emit->return_vtype) {
printf("ViperTypeError: incompatible return type\n");
}
} else {
assert(vtype == VTYPE_PYOBJ);
}
emit->last_emit_was_return_value = true;
#if N_X64
//asm_x64_call_ind(emit->as, 0, REG_RAX); to seg fault for debugging with gdb
asm_x64_exit(emit->as);
#elif N_THUMB
//asm_thumb_call_ind(emit->as, 0, REG_R0); to seg fault for debugging with gdb
asm_thumb_exit(emit->as);
#elif N_ARM
//asm_arm_bkpt(emit->as); to insert a bkpt and not segfault for debugging
asm_arm_exit(emit->as);
#endif
}
STATIC void emit_native_raise_varargs(emit_t *emit, int 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) {
printf("ViperTypeError: must raise an object\n");
}
// 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_value(emit_t *emit) {
// not supported (for now)
assert(0);
}
STATIC void emit_native_yield_from(emit_t *emit) {
// not supported (for now)
assert(0);
}
STATIC void emit_native_start_except_handler(emit_t *emit) {
// This instruction follows an nlr_pop, so the stack counter is back to zero, when really
// it should be up by a whole nlr_buf_t. We then want to pop the nlr_buf_t here, but save
// the first 2 elements, so we can get the thrown value.
adjust_stack(emit, 2);
vtype_kind_t vtype_nlr;
emit_pre_pop_reg(emit, &vtype_nlr, REG_ARG_1); // get the thrown value
emit_pre_pop_discard(emit, &vtype_nlr); // discard the linked-list pointer in the nlr_buf
emit_post_push_reg_reg_reg(emit, VTYPE_PYOBJ, REG_ARG_1, VTYPE_PYOBJ, REG_ARG_1, VTYPE_PYOBJ, REG_ARG_1); // push the 3 exception items
}
STATIC void emit_native_end_except_handler(emit_t *emit) {
adjust_stack(emit, -3); // stack adjust (not sure why it's this much...)
}
const emit_method_table_t EXPORT_FUN(method_table) = {
emit_native_set_native_type,
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_id,
emit_native_store_id,
emit_native_delete_id,
emit_native_label_assign,
emit_native_import_name,
emit_native_import_from,
emit_native_import_star,
emit_native_load_const_tok,
emit_native_load_const_small_int,
emit_native_load_const_int,
emit_native_load_const_dec,
emit_native_load_const_str,
emit_native_load_null,
emit_native_load_fast,
emit_native_load_deref,
emit_native_load_name,
emit_native_load_global,
emit_native_load_attr,
emit_native_load_method,
emit_native_load_build_class,
emit_native_load_subscr,
emit_native_store_fast,
emit_native_store_deref,
emit_native_store_name,
emit_native_store_global,
emit_native_store_attr,
emit_native_store_subscr,
emit_native_delete_fast,
emit_native_delete_deref,
emit_native_delete_name,
emit_native_delete_global,
emit_native_delete_attr,
emit_native_delete_subscr,
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_true,
emit_native_pop_jump_if_false,
emit_native_jump_if_true_or_pop,
emit_native_jump_if_false_or_pop,
emit_native_break_loop,
emit_native_continue_loop,
emit_native_setup_with,
emit_native_with_cleanup,
emit_native_setup_except,
emit_native_setup_finally,
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_tuple,
emit_native_build_list,
emit_native_list_append,
emit_native_build_map,
emit_native_store_map,
emit_native_map_add,
emit_native_build_set,
emit_native_set_add,
emit_native_build_slice,
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_value,
emit_native_yield_from,
emit_native_start_except_handler,
emit_native_end_except_handler,
};
#endif // (MICROPY_EMIT_X64 && N_X64) || (MICROPY_EMIT_THUMB && N_THUMB) || (MICROPY_EMIT_ARM && N_ARM)
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