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opcodesswitch.h
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6312 lines (5489 loc) · 285 KB
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/*
* This file is part of AtomVM.
*
* Copyright 2017 Davide Bettio <davide@uninstall.it>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
*/
#include "module.h"
#include <assert.h>
#include <string.h>
//#define ENABLE_STACK_TRACE
#include "bif.h"
#include "bitstring.h"
#include "debug.h"
#include "defaultatoms.h"
#include "dist_nifs.h"
#include "exportedfunction.h"
#include "intn.h"
#include "jit.h"
#include "mailbox.h"
#include "nifs.h"
#include "scheduler.h"
#include "stacktrace.h"
#include "utils.h"
//#define ENABLE_TRACE
#include "trace.h"
// These constants can be used to reduce the size of the VM for a specific
// range of compiler versions
#ifndef MINIMUM_OTP_COMPILER_VERSION
#define MINIMUM_OTP_COMPILER_VERSION 26
#endif
#ifndef MAXIMUM_OTP_COMPILER_VERSION
#define MAXIMUM_OTP_COMPILER_VERSION 29
#endif
// Support for BEAM files compiled with specific compiler options.
// These are enabled by default and can be set to 0 to reduce VM size
// when the corresponding compiler option is known not to be used.
#ifndef SUPPORT_COMPILER_OPT_NO_BS_MATCH
#define SUPPORT_COMPILER_OPT_NO_BS_MATCH 1
#endif
#ifndef SUPPORT_COMPILER_OPT_NO_SSA_OPT_BS_ENSURE
#define SUPPORT_COMPILER_OPT_NO_SSA_OPT_BS_ENSURE 1
#endif
#ifndef SUPPORT_COMPILER_OPT_NO_BS_CREATE_BIN
#define SUPPORT_COMPILER_OPT_NO_BS_CREATE_BIN 1
#endif
// About X macro: https://en.wikipedia.org/wiki/X_macro
#define X_OPCODE(op_name, num, lower_name, signature) \
op_name = num,
#define X_OPCODE_HANDLER(op_name, num, lower_name, signature) \
op_name = num,
#define X_OPCODE_REMOVED(op_name, num, lower_name) \
op_name = num,
#define X_OPCODE_SKIP(...)
enum beam_opcodes {
#include "opcodes.def"
};
#undef X_OPCODE
#undef X_OPCODE_HANDLER
#undef X_OPCODE_REMOVED
#undef X_OPCODE_SKIP
#ifdef __cplusplus
extern "C" {
#endif
#if AVM_NO_JIT
#define SET_ERROR(error_type_atom) \
context_set_exception_class(ctx, ERROR_ATOM); \
ctx->exception_reason = error_type_atom; \
ctx->exception_stacktrace = stacktrace_create_raw(ctx, mod, pc - code);
#elif AVM_NO_EMU
#define SET_ERROR(error_type_atom) \
context_set_exception_class(ctx, ERROR_ATOM); \
ctx->exception_reason = error_type_atom; \
ctx->exception_stacktrace = stacktrace_create_raw(ctx, mod, (const uint8_t *) native_pc - (const uint8_t *) mod->native_code);
#else
#define SET_ERROR(error_type_atom) \
context_set_exception_class(ctx, ERROR_ATOM); \
ctx->exception_reason = error_type_atom; \
if (mod->native_code) { \
ctx->exception_stacktrace = stacktrace_create_raw(ctx, mod, \
(const uint8_t *) native_pc - (const uint8_t *) mod->native_code); \
} else { \
ctx->exception_stacktrace = stacktrace_create_raw(ctx, mod, pc - code); \
}
#endif
#if AVM_NO_JIT
#define SET_ERROR_MFA(error_type_atom, m, f, a) \
context_set_exception_class_use_live_flag(ctx, ERROR_ATOM); \
ctx->exception_reason = error_type_atom; \
ctx->exception_stacktrace = stacktrace_create_raw_mfa(ctx, mod, pc - code, m, f, a);
#elif AVM_NO_EMU
#define SET_ERROR_MFA(error_type_atom, m, f, a) \
context_set_exception_class_use_live_flag(ctx, ERROR_ATOM); \
ctx->exception_reason = error_type_atom; \
ctx->exception_stacktrace = stacktrace_create_raw_mfa(ctx, mod, (const uint8_t *) native_pc - (const uint8_t *) mod->native_code, m, f, a);
#else
#define SET_ERROR_MFA(error_type_atom, m, f, a) \
context_set_exception_class_use_live_flag(ctx, ERROR_ATOM); \
ctx->exception_reason = error_type_atom; \
if (mod->native_code) { \
ctx->exception_stacktrace = stacktrace_create_raw_mfa(ctx, mod, \
(const uint8_t *) native_pc - (const uint8_t *) mod->native_code, m, f, a); \
} else { \
ctx->exception_stacktrace = stacktrace_create_raw_mfa(ctx, mod, pc - code, m, f, a); \
}
#endif
// Override nifs.h RAISE_ERROR macro
#ifdef RAISE_ERROR
#undef RAISE_ERROR
#endif
#define RAISE_ERROR(error_type_atom) \
SET_ERROR(error_type_atom) \
goto handle_error;
#define RAISE_ERROR_MFA(error_type_atom, m, f, a) \
SET_ERROR_MFA(error_type_atom, m, f, a) \
goto handle_error;
#define VM_ABORT() \
goto do_abort;
// If GC can be performed between decoding of register and accessing it,
// GC_SAFE variant must be used
typedef term * dreg_t;
typedef struct
{
term *base;
int index;
} dreg_gc_safe_t;
#define X_REG_FLAG 1
static inline term *with_x_reg_flag(term *xptr)
{
return (term *) (((uintptr_t) xptr) | X_REG_FLAG);
}
static inline bool has_x_reg_flag(term *xptr)
{
return ((uintptr_t) xptr) & X_REG_FLAG;
}
static inline term *to_x_reg_ptr(term *xptr)
{
return (term *) (((uintptr_t) xptr) & ~((uintptr_t) X_REG_FLAG));
}
#ifndef AVM_NO_EMU
static dreg_t extended_register_ptr(Context *ctx, unsigned int index)
{
struct ListHead *item;
LIST_FOR_EACH (item, &ctx->extended_x_regs) {
struct ExtendedRegister *ext_reg = GET_LIST_ENTRY(item, struct ExtendedRegister, head);
if (ext_reg->index == index) {
return &ext_reg->value;
}
}
struct ExtendedRegister *new_ext_reg = malloc(sizeof(struct ExtendedRegister));
new_ext_reg->index = index;
new_ext_reg->value = term_nil();
list_append(&ctx->extended_x_regs, &new_ext_reg->head);
return &new_ext_reg->value;
}
#endif
static void destroy_extended_registers(Context *ctx, unsigned int live)
{
struct ListHead *item;
struct ListHead *tmp;
MUTABLE_LIST_FOR_EACH (item, tmp, &ctx->extended_x_regs) {
struct ExtendedRegister *ext_reg = GET_LIST_ENTRY(item, struct ExtendedRegister, head);
if (ext_reg->index >= live) {
list_remove(item);
free(ext_reg);
}
}
}
#define READ_ANY_XREG(out_term, reg_index) \
{ \
if (LIKELY(reg_index < MAX_REG)) { \
out_term = x_regs[reg_index]; \
} else { \
dreg_t reg = extended_register_ptr(ctx, reg_index); \
out_term = *reg; \
} \
}
#define TRIM_LIVE_REGS(live_regs_no) \
if (UNLIKELY(!list_is_empty(&ctx->extended_x_regs))) { \
destroy_extended_registers(ctx, live_regs_no); \
} \
if (UNLIKELY(live_regs_no > MAX_REG)) { \
live_regs_no = MAX_REG; \
}
#define DEST_REGISTER(reg) dreg_t reg
#define GC_SAFE_DEST_REGISTER(reg) dreg_gc_safe_t reg
// TODO: fix register type heuristics, there is a chance that 'y' might be an "extended" x reg
#define T_DEST_REG(dreg) \
((dreg) >= x_regs && (dreg) < x_regs + MAX_REG) ? 'x' : 'y', \
(int) (((dreg) >= x_regs && (dreg) < x_regs + MAX_REG) ? ((dreg) - x_regs) : ((dreg) - ctx->e))
// TODO: fix register type heuristics, there is a chance that 'y' might be an "extended" x reg
#define T_DEST_REG_GC_SAFE(dreg_gc_safe) \
(has_x_reg_flag((dreg).base) ? 'x' : 'y'), ((dreg).index)
#define DECODE_COMPACT_TERM(dest_term, decode_pc) \
{ \
uint8_t first_byte = *(decode_pc)++; \
switch (first_byte & 0xF) { \
case COMPACT_LARGE_LITERAL: \
case COMPACT_LITERAL: \
switch (((first_byte) >> 3) & 0x3) { \
case 0: \
case 2: \
dest_term = term_from_int4(first_byte >> 4); \
break; \
\
case 1: \
dest_term = term_from_int(((first_byte & 0xE0) << 3) | *(decode_pc)++); \
break; \
\
case 3: { \
uint8_t sz = (first_byte >> 5) + 2; \
avm_int_t val = 0; \
for (uint8_t vi = 0; vi < sz; vi++) { \
val <<= 8; \
val |= *(decode_pc)++; \
} \
dest_term = term_from_int(val); \
break; \
} \
default: UNREACHABLE(); /* help gcc 8.4 */ \
} \
break; \
\
case COMPACT_INTEGER: \
dest_term = term_from_int4(first_byte >> 4); \
break; \
\
case COMPACT_ATOM: \
if (first_byte == COMPACT_ATOM) { \
dest_term = term_nil(); \
} else { \
dest_term = module_get_atom_term_by_id(mod, first_byte >> 4); \
} \
break; \
\
case COMPACT_XREG: \
dest_term = x_regs[first_byte >> 4]; \
break; \
\
case COMPACT_YREG: \
dest_term = ctx->e[first_byte >> 4]; \
break; \
\
case COMPACT_EXTENDED: \
switch (first_byte) { \
case COMPACT_EXTENDED_LITERAL: { \
uint8_t first_extended_byte = *(decode_pc)++; \
switch (((first_extended_byte) >> 3) & 0x3) { \
case 0: \
case 2: \
dest_term = module_load_literal(mod, first_extended_byte >> 4, ctx); \
break; \
case 1: { \
uint8_t byte_1 = *(decode_pc)++; \
uint16_t index = (((uint16_t) first_extended_byte & 0xE0) << 3) | byte_1; \
dest_term = module_load_literal(mod, index, ctx); \
break; \
} \
case 3: { \
uint8_t sz = (first_extended_byte >> 5) + 2; \
avm_int_t val = 0; \
for (uint8_t vi = 0; vi < sz; vi++) { \
val <<= 8; \
val |= *(decode_pc)++; \
} \
dest_term = module_load_literal(mod, val, ctx); \
break; \
} \
default: UNREACHABLE(); /* help gcc 8.4 */ \
} \
if (UNLIKELY(term_is_invalid_term(dest_term))) { \
RAISE_ERROR(OUT_OF_MEMORY_ATOM); \
} \
\
break; \
} \
case COMPACT_EXTENDED_TYPED_REGISTER: { \
uint8_t reg_byte = *(decode_pc)++; \
switch (reg_byte & 0x0F) { \
case COMPACT_XREG: \
dest_term = x_regs[reg_byte >> 4]; \
break; \
case COMPACT_YREG: \
dest_term = ctx->e[reg_byte >> 4]; \
break; \
case COMPACT_LARGE_XREG: \
if (LIKELY((reg_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
unsigned int reg_index = (((reg_byte & 0xE0) << 3) | *(decode_pc)++); \
dreg_t ext_reg = extended_register_ptr(ctx, reg_index); \
if (IS_NULL_PTR(ext_reg)) { \
RAISE_ERROR(OUT_OF_MEMORY_ATOM); \
} \
dest_term = *ext_reg; \
} else { \
VM_ABORT(); \
} \
break; \
case COMPACT_LARGE_YREG: \
if (LIKELY((reg_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
dest_term = ctx->e[((reg_byte & 0xE0) << 3) | *(decode_pc)++]; \
} else { \
VM_ABORT(); \
} \
break; \
default: \
VM_ABORT(); \
} \
int type_index; \
DECODE_LITERAL(type_index, decode_pc) \
break; \
} \
default: \
VM_ABORT(); \
break; \
} \
break; \
\
case COMPACT_LARGE_ATOM: \
switch (first_byte & COMPACT_LARGE_IMM_MASK) { \
case COMPACT_11BITS_VALUE: \
dest_term = module_get_atom_term_by_id(mod, ((first_byte & 0xE0) << 3) | *(decode_pc)++); \
break; \
\
default: \
VM_ABORT(); \
break; \
} \
break; \
\
case COMPACT_LARGE_INTEGER: \
switch (first_byte & COMPACT_LARGE_IMM_MASK) { \
case COMPACT_11BITS_VALUE: \
dest_term = term_from_int11(((first_byte & 0xE0) << 3) | *(decode_pc)++); \
break; \
\
case COMPACT_NBITS_VALUE: { \
size_t num_bytes = (first_byte >> 5) + 2; \
dest_term = large_integer_to_term(ctx, num_bytes, &decode_pc); \
if (UNLIKELY(term_is_invalid_term(dest_term))) { \
HANDLE_ERROR(); \
} \
break; \
} \
default: \
VM_ABORT(); \
break; \
} \
break; \
\
case COMPACT_LARGE_XREG: \
if (LIKELY((first_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
unsigned int reg_index = (((first_byte & 0xE0) << 3) | *(decode_pc)++); \
dreg_t ext_reg = extended_register_ptr(ctx, reg_index); \
if (IS_NULL_PTR(ext_reg)) { \
RAISE_ERROR(OUT_OF_MEMORY_ATOM); \
} \
dest_term = *ext_reg; \
} else { \
VM_ABORT(); \
} \
break; \
\
case COMPACT_LARGE_YREG: \
if (LIKELY((first_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
dest_term = ctx->e[((first_byte & 0xE0) << 3) | *(decode_pc)++]; \
} else { \
VM_ABORT(); \
} \
break; \
\
default: \
VM_ABORT(); \
} \
}
#define READ_DEST_REGISTER(dreg) *(dreg)
#define READ_DEST_REGISTER_GC_SAFE(dreg_gc_safe) \
(has_x_reg_flag((dreg_gc_safe).base) ? \
*to_x_reg_ptr((dreg_gc_safe).base) : \
ctx->e[(dreg_gc_safe).index])
#define WRITE_REGISTER(dreg, value) \
{ \
*dreg = value; \
}
#define WRITE_REGISTER_GC_SAFE(dreg_gc_safe, value) \
{ \
if (has_x_reg_flag((dreg_gc_safe).base)) { \
*(to_x_reg_ptr((dreg_gc_safe).base)) = value; \
} else { \
ctx->e[(dreg_gc_safe).index] = value; \
} \
}
#define DECODE_EXTENDED_LIST_TAG(decode_pc) \
{ \
decode_pc++; \
}
#define DECODE_NIL(decode_pc) \
{ \
decode_pc++; \
}
#define DECODE_DEST_REGISTER(dreg, decode_pc) \
{ \
uint8_t first_byte = *(decode_pc)++; \
uint8_t reg_type = first_byte & 0xF; \
uint8_t reg_index = (first_byte >> 4); \
switch (reg_type) { \
case COMPACT_XREG: \
(dreg) = x_regs + reg_index; \
break; \
case COMPACT_YREG: \
(dreg) = ctx->e + reg_index; \
break; \
case COMPACT_LARGE_XREG: \
if (LIKELY((first_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
unsigned int reg_index = (((first_byte & 0xE0) << 3) | *(decode_pc)++); \
dreg_t ext_reg = extended_register_ptr(ctx, reg_index); \
if (IS_NULL_PTR(ext_reg)) { \
RAISE_ERROR(OUT_OF_MEMORY_ATOM); \
} \
dreg = ext_reg; \
} else { \
VM_ABORT(); \
} \
break; \
case COMPACT_LARGE_YREG: \
if (LIKELY((first_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
(dreg) = ctx->e + (((first_byte & 0xE0) << 3) | *(decode_pc)++); \
} else { \
VM_ABORT(); \
} \
break; \
default: \
VM_ABORT(); \
} \
}
// NOTE: (dreg_gc_safe).index is initialized for x registers even if not used to avoid compiler
// warnings about unitialized variables (-maybe-uninitialized)
#define DECODE_DEST_REGISTER_GC_SAFE(dreg_gc_safe, decode_pc) \
{ \
uint8_t first_byte = *(decode_pc)++; \
uint8_t reg_type = first_byte & 0xF; \
uint8_t reg_index = (first_byte >> 4); \
switch (reg_type) { \
case COMPACT_XREG: \
(dreg_gc_safe).base = with_x_reg_flag(&x_regs[reg_index]); \
(dreg_gc_safe).index = reg_index; \
break; \
case COMPACT_YREG: \
(dreg_gc_safe).base = ctx->e; \
(dreg_gc_safe).index = reg_index; \
break; \
case COMPACT_LARGE_XREG: \
if (LIKELY((first_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
unsigned int reg_index = (((first_byte & 0xE0) << 3) | *(decode_pc)++); \
dreg_t reg_base = extended_register_ptr(ctx, reg_index); \
if (IS_NULL_PTR(reg_base)) { \
RAISE_ERROR(OUT_OF_MEMORY_ATOM); \
} \
(dreg_gc_safe).base = with_x_reg_flag(reg_base); \
(dreg_gc_safe).index = reg_index; \
} else { \
VM_ABORT(); \
} \
break; \
case COMPACT_LARGE_YREG: \
if (LIKELY((first_byte & COMPACT_LARGE_IMM_MASK) == COMPACT_11BITS_VALUE)) { \
(dreg_gc_safe).base = ctx->e; \
(dreg_gc_safe).index = (((first_byte & 0xE0) << 3) | *(decode_pc)++); \
} else { \
VM_ABORT(); \
} \
break; \
default: \
VM_ABORT(); \
} \
}
// MAX_REG is enforced at decode time
#if MAX_REG <= 16
#define DECODE_FP_REGISTER(freg, decode_pc) \
{ \
(decode_pc)++; \
uint8_t first_byte = *(decode_pc)++; \
freg = first_byte >> 4; \
}
#else
#define DECODE_FP_REGISTER(freg, decode_pc) \
{ \
(decode_pc)++; \
DECODE_LITERAL(freg, decode_pc); \
}
#endif
#define DECODE_VALUE(val, decode_pc) \
{ \
uint8_t first_byte = *(decode_pc)++; \
switch (((first_byte) >> 3) & 0x3) { \
case 0: \
case 2: \
val = first_byte >> 4; \
break; \
\
case 1: \
val = ((first_byte & 0xE0) << 3) | *(decode_pc)++; \
break; \
\
case 3: { \
uint8_t sz = (first_byte >> 5) + 2; \
val = 0; \
for (uint8_t vi = 0; vi < sz; vi++) { \
val <<= 8; \
val |= *(decode_pc)++; \
} \
break; \
} \
default: UNREACHABLE(); /* help gcc 8.4 */ \
} \
}
#define DECODE_ATOM(atom, decode_pc) \
{ \
uint32_t atom_ix; \
DECODE_VALUE(atom_ix, decode_pc); \
atom = module_get_atom_term_by_id(mod, atom_ix); \
}
#define DECODE_LABEL(label, decode_pc) \
DECODE_VALUE(label, decode_pc)
#define DECODE_ATOM_OR_LABEL(atom, label, decode_pc) \
{ \
if ((*(decode_pc) & 0x7) != COMPACT_ATOM) { \
atom = term_invalid_term(); \
DECODE_VALUE(label, decode_pc); \
} else { \
uint32_t atom_ix; \
DECODE_VALUE(atom_ix, decode_pc); \
atom = module_get_atom_term_by_id(mod, atom_ix); \
} \
}
#define DECODE_LITERAL(val, decode_pc) \
DECODE_VALUE(val, decode_pc)
#define DECODE_INTEGER(integer, decode_pc) \
DECODE_VALUE(integer, decode_pc)
// MAX_REG is enforced at decode time
#if MAX_REG <= 16
#define DECODE_XREG(reg, decode_pc) \
{ \
uint8_t first_byte = *(decode_pc)++; \
reg = first_byte >> 4; \
}
#else
#define DECODE_XREG(reg, decode_pc) \
DECODE_VALUE(reg, decode_pc)
#endif
#define DECODE_YREG(reg, decode_pc) \
DECODE_VALUE(reg, decode_pc)
#define DECODE_ALLOCATOR_LIST(need, decode_pc) \
if (IS_EXTENDED_ALLOCATOR(decode_pc)) { \
need = 0; \
(decode_pc)++; /* skip list tag */ \
uint32_t list_size; \
DECODE_LITERAL(list_size, decode_pc); \
uint32_t allocator_tag; \
uint32_t allocator_size; \
for (uint32_t j = 0; j < list_size; j++) { \
DECODE_LITERAL(allocator_tag, decode_pc); \
DECODE_LITERAL(allocator_size, decode_pc); \
if (allocator_tag == COMPACT_EXTENDED_ALLOCATOR_LIST_TAG_FLOATS) { \
allocator_size *= FLOAT_SIZE; \
} else if (allocator_tag == COMPACT_EXTENDED_ALLOCATOR_LIST_TAG_FUNS) { \
allocator_size *= BOXED_FUN_SIZE; \
} \
need += allocator_size; \
} \
} else { \
DECODE_LITERAL(need, decode_pc); \
}
#define IS_EXTENDED_ALLOCATOR(decode_pc) \
(*decode_pc) == COMPACT_EXTENDED_ALLOCATION_LIST
#define IS_EXTENDED_FP_REGISTER(decode_pc) \
(*decode_pc) == COMPACT_EXTENDED_FP_REGISTER
#define JUMP_TO_LABEL(module, label) \
if (module != mod) { \
prev_mod = mod; \
mod = module; \
code = mod->code->code; \
} \
JUMP_TO_ADDRESS(mod->labels[label])
#ifndef TRACE_JUMP
#define JUMP_TO_ADDRESS(address) \
pc = (address); \
goto loop
#else
#define JUMP_TO_ADDRESS(address) \
pc = (address); \
fprintf(stderr, "going to jump to %" PRIuPTR "\n", (uintptr_t) (pc - code)); \
goto loop
#endif
#if AVM_NO_JIT
#define SCHEDULE_NEXT(restore_mod, restore_to) \
{ \
ctx->saved_ip = restore_to; \
ctx->saved_module = restore_mod; \
ctx = scheduler_next(ctx->global, ctx); \
goto schedule_in; \
}
#define SCHEDULE_WAIT_ANY(restore_mod) \
{ \
ctx->saved_ip = pc; \
ctx->saved_module = restore_mod; \
ctx = scheduler_wait(ctx); \
goto schedule_in; \
}
#define SCHEDULE_WAIT(restore_mod, restore_to) \
{ \
ctx->saved_ip = restore_to; \
ctx->saved_module = restore_mod; \
ctx = scheduler_wait(ctx); \
goto schedule_in; \
}
#elif AVM_NO_EMU
#define SCHEDULE_WAIT_ANY(restore_mod) \
{ \
ctx->saved_function_ptr = native_pc; \
ctx->saved_module = restore_mod; \
ctx = scheduler_wait(ctx); \
goto schedule_in; \
}
#else
#define SCHEDULE_NEXT(restore_mod, restore_to) \
{ \
assert(restore_mod->native_code == NULL); \
ctx->saved_ip = restore_to; \
ctx->saved_module = restore_mod; \
ctx = scheduler_next(ctx->global, ctx); \
goto schedule_in; \
}
#define SCHEDULE_WAIT_ANY(restore_mod) \
{ \
if (restore_mod->native_code == NULL) { \
ctx->saved_ip = pc; \
} else { \
ctx->saved_ip = native_pc; \
} \
ctx->saved_module = restore_mod; \
ctx = scheduler_wait(ctx); \
goto schedule_in; \
}
#define SCHEDULE_WAIT(restore_mod, restore_to) \
{ \
assert(restore_mod->native_code == NULL); \
ctx->saved_ip = restore_to; \
ctx->saved_module = restore_mod; \
ctx = scheduler_wait(ctx); \
goto schedule_in; \
}
#endif
#if AVM_NO_JIT
#define RESUME() \
{ \
pc = (ctx->saved_ip); \
}
#elif AVM_NO_EMU
#define RESUME() \
{ \
native_pc = ctx->saved_function_ptr; \
}
#else
#define RESUME() \
if (mod->native_code == NULL) { \
pc = (ctx->saved_ip); \
native_pc = NULL; \
} else { \
native_pc = ctx->saved_ip; \
}
#endif
// We use goto label as values, a GCC extension supported by clang.
#define PROCESS_SIGNAL_MESSAGES() \
{ \
MailboxMessage *signal_message = mailbox_process_outer_list(&ctx->mailbox); \
bool handle_error = false; \
bool reprocess_outer = false; \
while (signal_message) { \
switch (signal_message->type) { \
case KillSignal: { \
struct TermSignal *kill_signal \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
context_process_kill_signal(ctx, kill_signal); \
break; \
} \
case GCSignal: { \
if (UNLIKELY(memory_ensure_free_opt(ctx, 0, MEMORY_FORCE_SHRINK) != MEMORY_GC_OK)) { \
SET_ERROR(OUT_OF_MEMORY_ATOM); \
handle_error = true; \
} \
break; \
} \
case ProcessInfoRequestSignal: { \
struct BuiltInAtomRequestSignal *request_signal \
= CONTAINER_OF(signal_message, struct BuiltInAtomRequestSignal, base); \
context_process_process_info_request_signal(ctx, request_signal, false); \
break; \
} \
case TrapAnswerSignal: { \
struct TermSignal *trap_answer \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
if (UNLIKELY(!context_process_signal_trap_answer(ctx, trap_answer))) { \
SET_ERROR(OUT_OF_MEMORY_ATOM); \
handle_error = true; \
} \
break; \
} \
case TrapExceptionSignal: { \
struct ImmediateSignal *trap_exception \
= CONTAINER_OF(signal_message, struct ImmediateSignal, base); \
SET_ERROR(trap_exception->immediate); \
handle_error = true; \
break; \
} \
case FlushMonitorSignal: \
case FlushInfoMonitorSignal: { \
struct RefSignal *flush_signal \
= CONTAINER_OF(signal_message, struct RefSignal, base); \
bool info = signal_message->type == FlushInfoMonitorSignal; \
context_process_flush_monitor_signal(ctx, flush_signal->ref_ticks, info); \
break; \
} \
case SetGroupLeaderSignal: { \
struct TermSignal *group_leader \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
if (UNLIKELY(!context_process_signal_set_group_leader(ctx, group_leader))) { \
SET_ERROR(OUT_OF_MEMORY_ATOM); \
handle_error = true; \
} \
break; \
} \
case UnlinkIDSignal: { \
struct ImmediateRefSignal *immediate_ref_signal \
= CONTAINER_OF(signal_message, struct ImmediateRefSignal, base); \
context_ack_unlink(ctx, immediate_ref_signal->immediate, immediate_ref_signal->ref_ticks, false); \
break; \
} \
case UnlinkIDAckSignal: { \
struct ImmediateRefSignal *immediate_ref_signal \
= CONTAINER_OF(signal_message, struct ImmediateRefSignal, base); \
context_unlink_ack(ctx, immediate_ref_signal->immediate, immediate_ref_signal->ref_ticks); \
break; \
} \
case UnlinkRemoteIDSignal: { \
struct TermSignal *term_signal \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
uint64_t unlink_id = term_maybe_unbox_int64(term_get_tuple_element(term_signal->signal_term, 0)); \
term remote_pid = term_get_tuple_element(term_signal->signal_term, 1); \
context_ack_unlink(ctx, remote_pid, unlink_id, false); \
break; \
} \
case UnlinkRemoteIDAckSignal: { \
struct TermSignal *term_signal \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
uint64_t unlink_id = term_maybe_unbox_int64(term_get_tuple_element(term_signal->signal_term, 0)); \
term remote_pid = term_get_tuple_element(term_signal->signal_term, 1); \
context_unlink_ack(ctx, remote_pid, unlink_id); \
break; \
} \
case LinkExitSignal: { \
struct TermSignal *link_exit_signal \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
if (context_process_link_exit_signal(ctx, link_exit_signal)) { \
reprocess_outer = true; \
} \
break; \
} \
case MonitorSignal: { \
struct MonitorPointerSignal *monitor_signal \
= CONTAINER_OF(signal_message, struct MonitorPointerSignal, base); \
context_add_monitor(ctx, monitor_signal->monitor); \
break; \
} \
case DemonitorSignal: { \
struct RefSignal *ref_signal \
= CONTAINER_OF(signal_message, struct RefSignal, base); \
context_demonitor(ctx, ref_signal->ref_ticks); \
break; \
} \
case MonitorDownSignal: { \
struct TermSignal *monitor_down_signal \
= CONTAINER_OF(signal_message, struct TermSignal, base); \
context_process_monitor_down_signal(ctx, monitor_down_signal); \
reprocess_outer = true; \
break; \
} \
case CodeServerResumeSignal: { \
context_process_code_server_resume_signal(ctx); \
RESUME(); \
break; \
} \
case NormalMessage: { \
UNREACHABLE(); \
} \
} \
MailboxMessage *next = signal_message->next; \
mailbox_message_dispose(signal_message, &ctx->heap); \
signal_message = next; \
if (UNLIKELY(reprocess_outer && signal_message == NULL)) { \
reprocess_outer = false; \
signal_message = mailbox_process_outer_list(&ctx->mailbox); \
} \
} \
if (context_get_flags(ctx, Killed)) { \
goto terminate_context; \
} \
if (handle_error) { \
goto handle_error; \
} \
if (context_get_flags(ctx, Trap)) { \
SCHEDULE_WAIT_ANY(mod); \
} \
}
#define RAISE_ERROR_FROM_HELPER(error_type_atom) \
do { \
context_set_exception_class(ctx, ERROR_ATOM); \
ctx->exception_reason = (error_type_atom); \
return term_invalid_term(); \
} while (0)
#ifndef AVM_NO_EMU
#define PROCESS_MAYBE_TRAP_RETURN_VALUE(return_value) \
if (term_is_invalid_term(return_value)) { \
if (UNLIKELY(!context_get_flags(ctx, Trap))) { \
HANDLE_ERROR(); \
} else { \
SCHEDULE_WAIT(mod, pc); \
} \
}
#define PROCESS_MAYBE_TRAP_RETURN_VALUE_RESTORE_PC(return_value, rest_pc) \
if (term_is_invalid_term(return_value)) { \
if (UNLIKELY(!context_get_flags(ctx, Trap))) { \
pc = rest_pc; \
HANDLE_ERROR(); \
} else { \
SCHEDULE_WAIT(mod, pc); \
} \
}
#define PROCESS_MAYBE_TRAP_RETURN_VALUE_RESTORE_PC_INDEX_ARITY(return_value, rest_pc, m, i, a) \
if (term_is_invalid_term(return_value)) { \
if (UNLIKELY(!context_get_flags(ctx, Trap))) { \
term module_atom; \
term function_atom; \
module_get_imported_function_module_and_name_atoms((m), (i), &module_atom, &function_atom); \
pc = rest_pc; \
HANDLE_ERROR_MFA(module_atom, function_atom, (a)); \
} else { \
SCHEDULE_WAIT(mod, pc); \
} \
}
#define PROCESS_MAYBE_TRAP_RETURN_VALUE_LAST(return_value) \
if (term_is_invalid_term(return_value)) { \
if (UNLIKELY(!context_get_flags(ctx, Trap))) { \
HANDLE_ERROR(); \
} else { \
DO_RETURN(); \
SCHEDULE_WAIT(mod, pc); \
} \
}
#if AVM_NO_JIT
#define DO_RETURN() \
{ \
int module_index = ((uintptr_t) ctx->cp) >> 24; \
if (module_index == prev_mod->module_index) { \
Module *t = mod; \
mod = prev_mod; \
prev_mod = t; \
code = mod->code->code; \
} else if (module_index != mod->module_index) { \
prev_mod = mod; \
mod = globalcontext_get_module_by_index(glb, module_index); \
code = mod->code->code; \
} \
pc = code + ((((uintptr_t) ctx->cp) & 0xFFFFFF) >> 2); \
}
#else
#define DO_RETURN() \
{ \
int module_index = ((uintptr_t) ctx->cp) >> 24; \
if (module_index == prev_mod->module_index) { \
Module *t = mod; \
mod = prev_mod; \
prev_mod = t; \
code = mod->code->code; \
} else if (module_index != mod->module_index) { \
prev_mod = mod; \
mod = globalcontext_get_module_by_index(glb, module_index); \
code = mod->code->code; \
} \
if (mod->native_code) { \
native_pc = (ModuleNativeEntryPoint) ((const uint8_t *) mod->native_code) + ((ctx->cp & 0xFFFFFF) >> 2); \
} else { \
native_pc = NULL; \
pc = code + ((((uintptr_t) ctx->cp) & 0xFFFFFF) >> 2); \
} \
}
#endif
#define HANDLE_ERROR() \