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jit_emit_variable.c
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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "jit_emit_variable.h"
#include "jit_emit_exception.h"
#include "../jit_frontend.h"
#define CHECK_LOCAL(idx) \
do { \
if (idx \
>= wasm_func->func_type->param_count + wasm_func->local_count) { \
jit_set_last_error(cc, "local index out of range"); \
goto fail; \
} \
} while (0)
static uint8
get_local_type(const WASMFunction *wasm_func, uint32 local_idx)
{
uint32 param_count = wasm_func->func_type->param_count;
return local_idx < param_count
? wasm_func->func_type->types[local_idx]
: wasm_func->local_types[local_idx - param_count];
}
bool
jit_compile_op_get_local(JitCompContext *cc, uint32 local_idx)
{
WASMFunction *wasm_func = cc->cur_wasm_func;
uint16 *local_offsets = wasm_func->local_offsets;
uint16 local_offset;
uint8 local_type;
JitReg value = 0;
CHECK_LOCAL(local_idx);
local_offset = local_offsets[local_idx];
local_type = get_local_type(wasm_func, local_idx);
switch (local_type) {
case VALUE_TYPE_I32:
#if WASM_ENABLE_REF_TYPES != 0
case VALUE_TYPE_EXTERNREF:
case VALUE_TYPE_FUNCREF:
#endif
value = local_i32(cc->jit_frame, local_offset);
break;
case VALUE_TYPE_I64:
value = local_i64(cc->jit_frame, local_offset);
break;
case VALUE_TYPE_F32:
value = local_f32(cc->jit_frame, local_offset);
break;
case VALUE_TYPE_F64:
value = local_f64(cc->jit_frame, local_offset);
break;
default:
bh_assert(0);
break;
}
PUSH(value, local_type);
return true;
fail:
return false;
}
bool
jit_compile_op_set_local(JitCompContext *cc, uint32 local_idx)
{
WASMFunction *wasm_func = cc->cur_wasm_func;
uint16 *local_offsets = wasm_func->local_offsets;
uint16 local_offset;
uint8 local_type;
JitReg value;
CHECK_LOCAL(local_idx);
local_offset = local_offsets[local_idx];
local_type = get_local_type(wasm_func, local_idx);
switch (local_type) {
case VALUE_TYPE_I32:
#if WASM_ENABLE_REF_TYPES != 0
case VALUE_TYPE_EXTERNREF:
case VALUE_TYPE_FUNCREF:
#endif
POP_I32(value);
set_local_i32(cc->jit_frame, local_offset, value);
break;
case VALUE_TYPE_I64:
POP_I64(value);
set_local_i64(cc->jit_frame, local_offset, value);
break;
case VALUE_TYPE_F32:
POP_F32(value);
set_local_f32(cc->jit_frame, local_offset, value);
break;
case VALUE_TYPE_F64:
POP_F64(value);
set_local_f64(cc->jit_frame, local_offset, value);
break;
default:
bh_assert(0);
break;
}
return true;
fail:
return false;
}
bool
jit_compile_op_tee_local(JitCompContext *cc, uint32 local_idx)
{
WASMFunction *wasm_func = cc->cur_wasm_func;
uint16 *local_offsets = wasm_func->local_offsets;
uint16 local_offset;
uint8 local_type;
JitReg value = 0;
CHECK_LOCAL(local_idx);
local_offset = local_offsets[local_idx];
local_type = get_local_type(wasm_func, local_idx);
switch (local_type) {
case VALUE_TYPE_I32:
#if WASM_ENABLE_REF_TYPES != 0
case VALUE_TYPE_EXTERNREF:
case VALUE_TYPE_FUNCREF:
#endif
POP_I32(value);
set_local_i32(cc->jit_frame, local_offset, value);
PUSH_I32(value);
break;
case VALUE_TYPE_I64:
POP_I64(value);
set_local_i64(cc->jit_frame, local_offset, value);
PUSH_I64(value);
break;
case VALUE_TYPE_F32:
POP_F32(value);
set_local_f32(cc->jit_frame, local_offset, value);
PUSH_F32(value);
break;
case VALUE_TYPE_F64:
POP_F64(value);
set_local_f64(cc->jit_frame, local_offset, value);
PUSH_F64(value);
break;
default:
bh_assert(0);
goto fail;
}
return true;
fail:
return false;
}
static uint8
get_global_type(const WASMModule *module, uint32 global_idx)
{
if (global_idx < module->import_global_count) {
const WASMGlobalImport *import_global =
&((module->import_globals + global_idx)->u.global);
return import_global->type.val_type;
}
else {
const WASMGlobal *global =
module->globals + (global_idx - module->import_global_count);
return global->type.val_type;
}
}
bool
jit_compile_op_get_global(JitCompContext *cc, uint32 global_idx)
{
uint32 data_offset;
uint8 global_type = 0;
JitReg value = 0;
bh_assert(global_idx < cc->cur_wasm_module->import_global_count
+ cc->cur_wasm_module->global_count);
data_offset =
jit_frontend_get_global_data_offset(cc->cur_wasm_module, global_idx);
global_type = get_global_type(cc->cur_wasm_module, global_idx);
switch (global_type) {
case VALUE_TYPE_I32:
#if WASM_ENABLE_REF_TYPES != 0
case VALUE_TYPE_EXTERNREF:
case VALUE_TYPE_FUNCREF:
#endif
{
value = jit_cc_new_reg_I32(cc);
GEN_INSN(LDI32, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
case VALUE_TYPE_I64:
{
value = jit_cc_new_reg_I64(cc);
GEN_INSN(LDI64, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
case VALUE_TYPE_F32:
{
value = jit_cc_new_reg_F32(cc);
GEN_INSN(LDF32, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
case VALUE_TYPE_F64:
{
value = jit_cc_new_reg_F64(cc);
GEN_INSN(LDF64, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
default:
{
jit_set_last_error(cc, "unexpected global type");
goto fail;
}
}
PUSH(value, global_type);
return true;
fail:
return false;
}
bool
jit_compile_op_set_global(JitCompContext *cc, uint32 global_idx,
bool is_aux_stack)
{
uint32 data_offset;
uint8 global_type = 0;
JitReg value = 0;
bh_assert(global_idx < cc->cur_wasm_module->import_global_count
+ cc->cur_wasm_module->global_count);
data_offset =
jit_frontend_get_global_data_offset(cc->cur_wasm_module, global_idx);
global_type = get_global_type(cc->cur_wasm_module, global_idx);
switch (global_type) {
case VALUE_TYPE_I32:
#if WASM_ENABLE_REF_TYPES != 0
case VALUE_TYPE_EXTERNREF:
case VALUE_TYPE_FUNCREF:
#endif
{
POP_I32(value);
if (is_aux_stack) {
JitReg aux_stack_bound = get_aux_stack_bound_reg(cc->jit_frame);
JitReg aux_stack_bottom =
get_aux_stack_bottom_reg(cc->jit_frame);
GEN_INSN(CMP, cc->cmp_reg, value, aux_stack_bound);
if (!(jit_emit_exception(cc, EXCE_AUX_STACK_OVERFLOW,
JIT_OP_BLEU, cc->cmp_reg, NULL)))
goto fail;
GEN_INSN(CMP, cc->cmp_reg, value, aux_stack_bottom);
if (!(jit_emit_exception(cc, EXCE_AUX_STACK_UNDERFLOW,
JIT_OP_BGTU, cc->cmp_reg, NULL)))
goto fail;
}
GEN_INSN(STI32, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
case VALUE_TYPE_I64:
{
POP_I64(value);
GEN_INSN(STI64, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
case VALUE_TYPE_F32:
{
POP_F32(value);
GEN_INSN(STF32, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
case VALUE_TYPE_F64:
{
POP_F64(value);
GEN_INSN(STF64, value, get_module_inst_reg(cc->jit_frame),
NEW_CONST(I32, data_offset));
break;
}
default:
{
jit_set_last_error(cc, "unexpected global type");
goto fail;
}
}
return true;
fail:
return false;
}