1314 lines
53 KiB
C
1314 lines
53 KiB
C
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/*
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* Execute ClamAV bytecode.
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*
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* Copyright (C) 2013-2022 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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* Copyright (C) 2009-2013 Sourcefire, Inc.
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*
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* Authors: Török Edvin
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#if HAVE_CONFIG_H
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#include "clamav-config.h"
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#endif
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#include "clamav.h"
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#include "others.h"
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#include "bytecode.h"
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#include "bytecode_priv.h"
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#include "type_desc.h"
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#include "readdb.h"
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#include <string.h>
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#ifndef _WIN32
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#include <sys/time.h>
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#endif
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#include "bytecode_api_impl.h"
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#include "disasm-common.h"
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/* Enable this to catch more bugs in the RC phase */
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#define CL_BYTECODE_SAFE
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#ifdef CL_BYTECODE_SAFE
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/* These checks will also be done by the bytecode verifier, but for
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* debugging purposes we have explicit checks, these should never fail! */
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#ifdef CL_DEBUG
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static int never_inline bcfail(const char *msg, long a, long b,
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const char *file, unsigned line)
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{
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cli_warnmsg("bytecode: check failed %s (%lx and %lx) at %s:%u\n", msg, a, b, file, line);
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return CL_EARG;
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}
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#else
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#define bcfail(msg, a, b, f, l) CL_EBYTECODE
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#endif
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#define CHECK_FUNCID(funcid) \
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do { \
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if (funcid >= bc->num_func) return bcfail("funcid out of bounds!", funcid, bc->num_func, __FILE__, __LINE__); \
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} while (0)
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#define CHECK_APIID(funcid) \
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do { \
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if (funcid >= cli_apicall_maxapi) return bcfail("APIid out of bounds!", funcid, cli_apicall_maxapi, __FILE__, __LINE__); \
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} while (0)
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#define CHECK_EQ(a, b) \
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do { \
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if ((a) != (b)) return bcfail("Values " #a " and " #b " don't match!", (a), (b), __FILE__, __LINE__); \
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} while (0)
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#define CHECK_GT(a, b) \
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do { \
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if ((a) <= (b)) return bcfail("Condition failed " #a " > " #b, (a), (b), __FILE__, __LINE__); \
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} while (0)
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#else
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static inline int bcfail(const char *msg, long a, long b,
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const char *file, unsigned line) {}
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#define CHECK_FUNCID(x) ;
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#define CHECK_APIID(x) ;
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#define CHECK_EQ(a, b)
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#define CHECK_GT(a, b)
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#endif
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#if 0 /* too verbose, use #ifdef CL_DEBUG if needed */
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#define CHECK_UNREACHABLE \
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do { \
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cli_dbgmsg("bytecode: unreachable executed!\n"); \
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return CL_EBYTECODE; \
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} while (0)
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#define TRACE_PTR(ptr, s) cli_dbgmsg("bytecode trace: ptr %llx, +%x\n", ptr, s);
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#define TRACE_R(x) cli_dbgmsg("bytecode trace: %u, read %llx\n", pc, (long long)x);
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#define TRACE_W(x, w, p) cli_dbgmsg("bytecode trace: %u, write%d @%u %llx\n", pc, p, w, (long long)(x));
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#define TRACE_EXEC(id, dest, ty, stack) cli_dbgmsg("bytecode trace: executing %d, -> %u (%u); %u\n", id, dest, ty, stack)
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#define TRACE_INST(inst) \
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do { \
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unsigned bbnum = 0; \
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printf("LibClamAV debug: bytecode trace: executing instruction "); \
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cli_byteinst_describe(inst, &bbnum); \
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printf("\n"); \
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} while (0)
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#define TRACE_API(s, dest, ty, stack) cli_dbgmsg("bytecode trace: executing %s, -> %u (%u); %u\n", s, dest, ty, stack)
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#else
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#define CHECK_UNREACHABLE return CL_EBYTECODE
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#define TRACE_PTR(ptr, s)
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#define TRACE_R(x)
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#define TRACE_W(x, w, p)
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#define TRACE_EXEC(id, dest, ty, stack)
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#define TRACE_INST(inst)
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#define TRACE_API(s, dest, ty, stack)
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#endif
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#define SIGNEXT(a, from) CLI_SRS(((int64_t)(a)) << (64 - (from)), (64 - (from)))
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#ifdef CL_DEBUG
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#undef always_inline
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#define always_inline
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#endif
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static always_inline int jump(const struct cli_bc_func *func, uint16_t bbid, struct cli_bc_bb **bb, const struct cli_bc_inst **inst,
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unsigned *bb_inst)
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{
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CHECK_GT(func->numBB, bbid);
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*bb = &func->BB[bbid];
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*inst = (*bb)->insts;
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*bb_inst = 0;
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return 0;
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}
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#define STACK_CHUNKSIZE 65536
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struct stack_chunk {
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struct stack_chunk *prev;
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unsigned used;
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union {
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void *align;
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char data[STACK_CHUNKSIZE];
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} u;
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};
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struct stack {
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struct stack_chunk *chunk;
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uint16_t last_size;
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};
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/* type with largest alignment that we use (in general it is a long double, but
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* thats too big alignment for us) */
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typedef uint64_t align_t;
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static always_inline void *cli_stack_alloc(struct stack *stack, unsigned bytes)
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{
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struct stack_chunk *chunk = stack->chunk;
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uint16_t last_size_off;
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/* last_size is stored after data */
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/* align bytes to pointer size */
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bytes = (bytes + sizeof(uint16_t) + sizeof(align_t)) & ~(sizeof(align_t) - 1);
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last_size_off = bytes - 2;
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if (chunk && (chunk->used + bytes <= STACK_CHUNKSIZE)) {
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/* there is still room in this chunk */
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void *ret;
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*(uint16_t *)&chunk->u.data[chunk->used + last_size_off] = stack->last_size;
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stack->last_size = bytes / sizeof(align_t);
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ret = chunk->u.data + chunk->used;
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chunk->used += bytes;
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return ret;
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}
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if (bytes >= STACK_CHUNKSIZE) {
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cli_warnmsg("cli_stack_alloc: Attempt to allocate more than STACK_CHUNKSIZE bytes: %u!\n", bytes);
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return NULL;
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}
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/* not enough room here, allocate new chunk */
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chunk = cli_malloc(sizeof(*stack->chunk));
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if (!chunk) {
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cli_warnmsg("cli_stack_alloc: Unable to allocate memory for stack-chunk: bytes: %zu!\n", sizeof(*stack->chunk));
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return NULL;
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}
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*(uint16_t *)&chunk->u.data[last_size_off] = stack->last_size;
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stack->last_size = bytes / sizeof(align_t);
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chunk->used = bytes;
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chunk->prev = stack->chunk;
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stack->chunk = chunk;
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return chunk->u.data;
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}
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static always_inline void cli_stack_free(struct stack *stack, void *data)
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{
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uint16_t last_size;
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struct stack_chunk *chunk = stack->chunk;
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if (!chunk) {
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cli_warnmsg("cli_stack_free: stack empty!\n");
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return;
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}
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if ((chunk->u.data + chunk->used) != ((char *)data + stack->last_size * sizeof(align_t))) {
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cli_warnmsg("cli_stack_free: wrong free order: %p, expected %p\n",
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data, chunk->u.data + chunk->used - stack->last_size * sizeof(align_t));
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return;
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}
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last_size = *(uint16_t *)&chunk->u.data[chunk->used - 2];
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if (chunk->used < stack->last_size * sizeof(align_t)) {
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cli_warnmsg("cli_stack_free: last_size is corrupt!\n");
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return;
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}
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chunk->used -= stack->last_size * sizeof(align_t);
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stack->last_size = last_size;
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if (!chunk->used) {
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stack->chunk = chunk->prev;
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free(chunk);
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}
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}
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static void cli_stack_destroy(struct stack *stack)
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{
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struct stack_chunk *chunk = stack->chunk;
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while (chunk) {
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stack->chunk = chunk->prev;
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free(chunk);
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chunk = stack->chunk;
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}
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}
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struct stack_entry {
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struct stack_entry *prev;
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const struct cli_bc_func *func;
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operand_t ret;
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unsigned bb_inst;
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struct cli_bc_bb *bb;
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char *values;
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};
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static always_inline struct stack_entry *allocate_stack(struct stack *stack,
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struct stack_entry *prev,
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const struct cli_bc_func *func,
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const struct cli_bc_func *func_old,
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operand_t ret,
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struct cli_bc_bb *bb,
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unsigned bb_inst)
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{
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char *values;
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struct stack_entry *entry = cli_stack_alloc(stack, sizeof(*entry) + sizeof(*values) * func->numBytes);
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if (!entry)
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return NULL;
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entry->prev = prev;
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entry->func = func_old;
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entry->ret = ret;
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entry->bb = bb;
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entry->bb_inst = bb_inst;
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/* we allocated room for values right after stack_entry! */
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entry->values = values = (char *)&entry[1];
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memcpy(&values[func->numBytes - func->numConstants * 8], func->constants,
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sizeof(*values) * func->numConstants * 8);
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return entry;
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}
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static always_inline struct stack_entry *pop_stack(struct stack *stack,
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struct stack_entry *stack_entry,
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const struct cli_bc_func **func,
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operand_t *ret,
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struct cli_bc_bb **bb,
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unsigned *bb_inst)
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{
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void *data;
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*func = stack_entry->func;
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*ret = stack_entry->ret;
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*bb = stack_entry->bb;
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*bb_inst = stack_entry->bb_inst;
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data = stack_entry;
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stack_entry = stack_entry->prev;
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cli_stack_free(stack, data);
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return stack_entry;
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}
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/*
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*
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* p, p+1, p+2, p+3 <- gt
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CHECK_EQ((p)&1, 0);
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CHECK_EQ((p)&3, 0);
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CHECK_EQ((p)&7, 0);
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*/
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#define WRITE8(p, x) \
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CHECK_GT(func->numBytes, p); \
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TRACE_W(x, p, 8); \
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*(uint8_t *)&values[p] = x
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#define WRITE16(p, x) \
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CHECK_GT(func->numBytes, p + 1); \
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CHECK_EQ((p)&1, 0); \
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TRACE_W(x, p, 16); \
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*(uint16_t *)&values[p] = x
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#define WRITE32(p, x) \
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CHECK_GT(func->numBytes, p + 3); \
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CHECK_EQ((p)&3, 0); \
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TRACE_W(x, p, 32); \
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*(uint32_t *)&values[p] = x
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#define WRITE64(p, x) \
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CHECK_GT(func->numBytes, p + 7); \
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CHECK_EQ((p)&7, 0); \
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TRACE_W(x, p, 64); \
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*(uint64_t *)&values[p] = x
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|
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#define WRITEP(x, p) \
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CHECK_GT(func->numBytes, p + PSIZE - 1); \
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CHECK_EQ((p) & (PSIZE - 1), 0); \
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TRACE_W(x, p, PSIZE * 8); \
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||
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*(void **)&values[p] = x
|
||
|
|
|
||
|
|
#define uint_type(n) uint##n##_t
|
||
|
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#define READNfrom(maxBytes, from, x, n, p) \
|
||
|
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CHECK_GT((maxBytes), (p) + (n / 8) - 1); \
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CHECK_EQ((p) & (n / 8 - 1), 0); \
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||
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x = *(uint_type(n) *)&(from)[(p)]; \
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|
|
TRACE_R(x)
|
||
|
|
|
||
|
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#define READN(x, n, p) \
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||
|
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do { \
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||
|
|
if (p & 0x80000000) { \
|
||
|
|
uint32_t pg = p & 0x7fffffff; \
|
||
|
|
if (!pg) { \
|
||
|
|
x = 0; \
|
||
|
|
} else { \
|
||
|
|
READNfrom(bc->numGlobalBytes, bc->globalBytes, x, n, pg); \
|
||
|
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} \
|
||
|
|
} else { \
|
||
|
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READNfrom(func->numBytes, values, x, n, p); \
|
||
|
|
} \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#define READ1(x, p) \
|
||
|
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READN(x, 8, p); \
|
||
|
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x = x & 1
|
||
|
|
#define READ8(x, p) READN(x, 8, p)
|
||
|
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#define READ16(x, p) READN(x, 16, p)
|
||
|
|
#define READ32(x, p) READN(x, 32, p)
|
||
|
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#define READ64(x, p) READN(x, 64, p)
|
||
|
|
|
||
|
|
#define PSIZE sizeof(int64_t)
|
||
|
|
#define READP(x, p, asize) \
|
||
|
|
{ \
|
||
|
|
int64_t iptr__; \
|
||
|
|
READN(iptr__, 64, p); \
|
||
|
|
x = ptr_torealptr(&ptrinfos, iptr__, (asize)); \
|
||
|
|
if (!x) { \
|
||
|
|
stop = CL_EBYTECODE; \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
TRACE_R(x) \
|
||
|
|
}
|
||
|
|
#define READPOP(x, p, asize) \
|
||
|
|
{ \
|
||
|
|
if ((p)&0x40000000) { \
|
||
|
|
unsigned ptr__ = (p)&0xbfffffff; \
|
||
|
|
CHECK_GT(func->numBytes, ptr__); \
|
||
|
|
TRACE_PTR(ptr__, asize); \
|
||
|
|
x = (void *)&values[ptr__]; \
|
||
|
|
} else { \
|
||
|
|
READP(x, p, asize) \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define READOLD8(x, p) \
|
||
|
|
CHECK_GT(func->numBytes, p); \
|
||
|
|
x = *(uint8_t *)&old_values[p]; \
|
||
|
|
TRACE_R(x)
|
||
|
|
#define READOLD16(x, p) \
|
||
|
|
CHECK_GT(func->numBytes, p + 1); \
|
||
|
|
CHECK_EQ((p)&1, 0); \
|
||
|
|
x = *(uint16_t *)&old_values[p]; \
|
||
|
|
TRACE_R(x)
|
||
|
|
#define READOLD32(x, p) \
|
||
|
|
CHECK_GT(func->numBytes, p + 3); \
|
||
|
|
CHECK_EQ((p)&3, 0); \
|
||
|
|
x = *(uint32_t *)&old_values[p]; \
|
||
|
|
TRACE_R(x)
|
||
|
|
#define READOLD64(x, p) \
|
||
|
|
CHECK_GT(func->numBytes, p + 7); \
|
||
|
|
CHECK_EQ((p)&7, 0); \
|
||
|
|
x = *(uint64_t *)&old_values[p]; \
|
||
|
|
TRACE_R(x)
|
||
|
|
|
||
|
|
#define BINOP(i) inst->u.binop[i]
|
||
|
|
|
||
|
|
#define DEFINE_BINOP_BC_HELPER(opc, OP, W0, W1, W2, W3, W4) \
|
||
|
|
case opc * 5: { \
|
||
|
|
uint8_t op0, op1, res; \
|
||
|
|
int8_t sop0, sop1; \
|
||
|
|
READ1(op0, BINOP(0)); \
|
||
|
|
READ1(op1, BINOP(1)); \
|
||
|
|
sop0 = op0; \
|
||
|
|
sop1 = op1; \
|
||
|
|
OP; \
|
||
|
|
W0(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 1: { \
|
||
|
|
uint8_t op0, op1, res; \
|
||
|
|
int8_t sop0, sop1; \
|
||
|
|
READ8(op0, BINOP(0)); \
|
||
|
|
READ8(op1, BINOP(1)); \
|
||
|
|
sop0 = op0; \
|
||
|
|
sop1 = op1; \
|
||
|
|
OP; \
|
||
|
|
W1(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 2: { \
|
||
|
|
uint16_t op0, op1, res; \
|
||
|
|
int16_t sop0, sop1; \
|
||
|
|
READ16(op0, BINOP(0)); \
|
||
|
|
READ16(op1, BINOP(1)); \
|
||
|
|
sop0 = op0; \
|
||
|
|
sop1 = op1; \
|
||
|
|
OP; \
|
||
|
|
W2(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 3: { \
|
||
|
|
uint32_t op0, op1, res; \
|
||
|
|
int32_t sop0, sop1; \
|
||
|
|
READ32(op0, BINOP(0)); \
|
||
|
|
READ32(op1, BINOP(1)); \
|
||
|
|
sop0 = op0; \
|
||
|
|
sop1 = op1; \
|
||
|
|
OP; \
|
||
|
|
W3(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 4: { \
|
||
|
|
uint64_t op0, op1, res; \
|
||
|
|
int64_t sop0, sop1; \
|
||
|
|
READ64(op0, BINOP(0)); \
|
||
|
|
READ64(op1, BINOP(1)); \
|
||
|
|
sop0 = op0; \
|
||
|
|
sop1 = op1; \
|
||
|
|
OP; \
|
||
|
|
W4(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define DEFINE_BINOP(opc, OP) DEFINE_BINOP_BC_HELPER(opc, OP, WRITE8, WRITE8, WRITE16, WRITE32, WRITE64)
|
||
|
|
#define DEFINE_ICMPOP(opc, OP) DEFINE_BINOP_BC_HELPER(opc, OP, WRITE8, WRITE8, WRITE8, WRITE8, WRITE8)
|
||
|
|
|
||
|
|
#define CHECK_OP(cond, msg) \
|
||
|
|
if ((cond)) { \
|
||
|
|
cli_dbgmsg(msg); \
|
||
|
|
stop = CL_EBYTECODE; \
|
||
|
|
break; \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define DEFINE_SCASTOP(opc, OP) \
|
||
|
|
case opc * 5: { \
|
||
|
|
uint8_t res; \
|
||
|
|
int8_t sres; \
|
||
|
|
OP; \
|
||
|
|
WRITE8(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 1: { \
|
||
|
|
uint8_t res; \
|
||
|
|
int8_t sres; \
|
||
|
|
OP; \
|
||
|
|
WRITE8(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 2: { \
|
||
|
|
uint16_t res; \
|
||
|
|
int16_t sres; \
|
||
|
|
OP; \
|
||
|
|
WRITE16(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 3: { \
|
||
|
|
uint32_t res; \
|
||
|
|
int32_t sres; \
|
||
|
|
OP; \
|
||
|
|
WRITE32(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
} \
|
||
|
|
case opc * 5 + 4: { \
|
||
|
|
uint64_t res; \
|
||
|
|
int64_t sres; \
|
||
|
|
OP; \
|
||
|
|
WRITE64(inst->dest, res); \
|
||
|
|
break; \
|
||
|
|
}
|
||
|
|
#define DEFINE_CASTOP(opc, OP) DEFINE_SCASTOP(opc, OP; (void)sres)
|
||
|
|
|
||
|
|
#define DEFINE_OP(opc) \
|
||
|
|
case opc * 5: /* fall-through */ \
|
||
|
|
case opc * 5 + 1: /* fall-through */ \
|
||
|
|
case opc * 5 + 2: /* fall-through */ \
|
||
|
|
case opc * 5 + 3: /* fall-through */ \
|
||
|
|
case opc * 5 + 4:
|
||
|
|
|
||
|
|
#define CHOOSE(OP0, OP1, OP2, OP3, OP4) \
|
||
|
|
switch (inst->u.cast.size) { \
|
||
|
|
case 0: \
|
||
|
|
OP0; \
|
||
|
|
break; \
|
||
|
|
case 1: \
|
||
|
|
OP1; \
|
||
|
|
break; \
|
||
|
|
case 2: \
|
||
|
|
OP2; \
|
||
|
|
break; \
|
||
|
|
case 3: \
|
||
|
|
OP3; \
|
||
|
|
break; \
|
||
|
|
case 4: \
|
||
|
|
OP4; \
|
||
|
|
break; \
|
||
|
|
default: \
|
||
|
|
CHECK_UNREACHABLE; \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define DEFINE_OP_BC_RET_N(OP, T, R0, W0) \
|
||
|
|
case OP: { \
|
||
|
|
operand_t ret; \
|
||
|
|
T tmp; \
|
||
|
|
R0(tmp, inst->u.unaryop); \
|
||
|
|
CHECK_GT(stack_depth, 0); \
|
||
|
|
stack_depth--; \
|
||
|
|
stack_entry = pop_stack(&stack, stack_entry, &func, &ret, &bb, \
|
||
|
|
&bb_inst); \
|
||
|
|
values = stack_entry ? stack_entry->values : ctx->values; \
|
||
|
|
CHECK_GT(func->numBytes, ret); \
|
||
|
|
W0(ret, tmp); \
|
||
|
|
if (!bb) { \
|
||
|
|
stop = CL_BREAK; \
|
||
|
|
continue; \
|
||
|
|
} \
|
||
|
|
stackid = ptr_register_stack(&ptrinfos, values, 0, func->numBytes) >> 32; \
|
||
|
|
inst = &bb->insts[bb_inst]; \
|
||
|
|
break; \
|
||
|
|
}
|
||
|
|
|
||
|
|
struct ptr_info {
|
||
|
|
uint8_t *base;
|
||
|
|
uint32_t size;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ptr_infos {
|
||
|
|
struct ptr_info *stack_infos;
|
||
|
|
struct ptr_info *glob_infos;
|
||
|
|
unsigned nstacks, nglobs;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline int64_t ptr_compose(int32_t id, uint32_t offset)
|
||
|
|
{
|
||
|
|
uint64_t i = id;
|
||
|
|
return (i << 32) | offset;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int32_t ptr_diff32(int64_t ptr1, int64_t ptr2)
|
||
|
|
{
|
||
|
|
int32_t ptrid1 = ptr1 >> 32;
|
||
|
|
int32_t ptrid2 = ptr2 >> 32;
|
||
|
|
if (ptrid1 != ptrid2) {
|
||
|
|
(void)bcfail("difference of pointers not pointing to same object!", ptrid1, ptrid2, __FILE__, __LINE__);
|
||
|
|
/* invalid diff */
|
||
|
|
return 0x40000000;
|
||
|
|
}
|
||
|
|
return (uint32_t)ptr1 - (uint32_t)ptr2;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int64_t ptr_register_stack(struct ptr_infos *infos,
|
||
|
|
char *values,
|
||
|
|
uint32_t off, uint32_t size)
|
||
|
|
{
|
||
|
|
unsigned n = infos->nstacks + 1;
|
||
|
|
struct ptr_info *sinfos = cli_realloc(infos->stack_infos,
|
||
|
|
sizeof(*sinfos) * n);
|
||
|
|
if (!sinfos)
|
||
|
|
return 0;
|
||
|
|
infos->stack_infos = sinfos;
|
||
|
|
infos->nstacks = n;
|
||
|
|
sinfos = &sinfos[n - 1];
|
||
|
|
sinfos->base = (uint8_t *)values + off;
|
||
|
|
sinfos->size = size;
|
||
|
|
return ptr_compose(-n, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int64_t ptr_register_glob_fixedid(struct ptr_infos *infos,
|
||
|
|
void *values, uint32_t size, unsigned n)
|
||
|
|
{
|
||
|
|
struct ptr_info *sinfos;
|
||
|
|
if (n > infos->nglobs) {
|
||
|
|
sinfos = cli_realloc(infos->glob_infos, sizeof(*sinfos) * n);
|
||
|
|
if (!sinfos)
|
||
|
|
return 0;
|
||
|
|
memset(sinfos + infos->nglobs, 0, (n - infos->nglobs) * sizeof(*sinfos));
|
||
|
|
infos->glob_infos = sinfos;
|
||
|
|
infos->nglobs = n;
|
||
|
|
}
|
||
|
|
sinfos = &infos->glob_infos[n - 1];
|
||
|
|
if (!values)
|
||
|
|
size = 0;
|
||
|
|
sinfos->base = values;
|
||
|
|
sinfos->size = size;
|
||
|
|
cli_dbgmsg("bytecode: registered ctx variable at %p (+%u) id %u\n", values,
|
||
|
|
size, n);
|
||
|
|
return ptr_compose(n, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int64_t ptr_register_glob(struct ptr_infos *infos,
|
||
|
|
void *values, uint32_t size)
|
||
|
|
{
|
||
|
|
if (!values)
|
||
|
|
return 0;
|
||
|
|
return ptr_register_glob_fixedid(infos, values, size, infos->nglobs + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void *ptr_torealptr(const struct ptr_infos *infos, int64_t ptr,
|
||
|
|
uint32_t read_size)
|
||
|
|
{
|
||
|
|
struct ptr_info *info;
|
||
|
|
int32_t ptrid = ptr >> 32;
|
||
|
|
uint32_t ptroff = (uint32_t)ptr;
|
||
|
|
TRACE_PTR(ptr, read_size);
|
||
|
|
if (UNLIKELY(!ptrid)) {
|
||
|
|
(void)bcfail("nullptr", ptrid, 0, __FILE__, __LINE__);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
if (ptrid < 0) {
|
||
|
|
ptrid = -ptrid - 1;
|
||
|
|
if (UNLIKELY((const unsigned int)ptrid >= infos->nstacks)) {
|
||
|
|
(void)bcfail("ptr", ptrid, infos->nstacks, __FILE__, __LINE__);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
info = &infos->stack_infos[ptrid];
|
||
|
|
} else {
|
||
|
|
ptrid--;
|
||
|
|
if (UNLIKELY((const unsigned int)ptrid >= infos->nglobs)) {
|
||
|
|
(void)bcfail("ptr", ptrid, infos->nglobs, __FILE__, __LINE__);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
info = &infos->glob_infos[ptrid];
|
||
|
|
}
|
||
|
|
if (LIKELY(ptroff < info->size &&
|
||
|
|
read_size <= info->size &&
|
||
|
|
ptroff + read_size <= info->size)) {
|
||
|
|
return info->base + ptroff;
|
||
|
|
}
|
||
|
|
|
||
|
|
(void)bcfail("ptr1", ptroff, info->size, __FILE__, __LINE__);
|
||
|
|
(void)bcfail("ptr2", read_size, info->size, __FILE__, __LINE__);
|
||
|
|
(void)bcfail("ptr3", ptroff + read_size, info->size, __FILE__, __LINE__);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static always_inline int check_sdivops(int64_t op0, int64_t op1)
|
||
|
|
{
|
||
|
|
return op1 == 0 || (op1 == -1 && op0 == (-9223372036854775807LL - 1LL));
|
||
|
|
}
|
||
|
|
|
||
|
|
static unsigned globaltypesize(uint16_t id)
|
||
|
|
{
|
||
|
|
const struct cli_bc_type *ty;
|
||
|
|
if (id <= 64)
|
||
|
|
return (id + 7) / 8;
|
||
|
|
if (id < 69)
|
||
|
|
return 8; /* ptr */
|
||
|
|
ty = &cli_apicall_types[id - 69];
|
||
|
|
switch (ty->kind) {
|
||
|
|
case DArrayType:
|
||
|
|
return ty->numElements * globaltypesize(ty->containedTypes[0]);
|
||
|
|
case DStructType:
|
||
|
|
case DPackedStructType: {
|
||
|
|
unsigned i, s = 0;
|
||
|
|
for (i = 0; i < ty->numElements; i++)
|
||
|
|
s += globaltypesize(ty->containedTypes[i]);
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* TODO: fix the APIs too */
|
||
|
|
static struct {
|
||
|
|
cli_apicall_pointer api;
|
||
|
|
uint32_t override_size;
|
||
|
|
} apisize_override[] = {
|
||
|
|
{(void *)cli_bcapi_disasm_x86, sizeof(struct DISASM_RESULT)},
|
||
|
|
{(void *)cli_bcapi_get_pe_section, sizeof(struct cli_exe_section)},
|
||
|
|
};
|
||
|
|
|
||
|
|
int cli_vm_execute(const struct cli_bc *bc, struct cli_bc_ctx *ctx, const struct cli_bc_func *func, const struct cli_bc_inst *inst)
|
||
|
|
{
|
||
|
|
size_t i;
|
||
|
|
uint32_t j;
|
||
|
|
unsigned stack_depth = 0, bb_inst = 0, stop = 0, pc = 0;
|
||
|
|
struct cli_bc_func *func2;
|
||
|
|
struct stack stack;
|
||
|
|
struct stack_entry *stack_entry = NULL;
|
||
|
|
struct cli_bc_bb *bb = NULL;
|
||
|
|
char *values = ctx->values;
|
||
|
|
char *old_values;
|
||
|
|
struct ptr_infos ptrinfos;
|
||
|
|
struct timeval tv0, tv1, timeout;
|
||
|
|
int stackid = 0;
|
||
|
|
|
||
|
|
memset(&ptrinfos, 0, sizeof(ptrinfos));
|
||
|
|
memset(&stack, 0, sizeof(stack));
|
||
|
|
for (i = 0; i < (size_t)cli_apicall_maxglobal - _FIRST_GLOBAL; i++) {
|
||
|
|
void *apiptr;
|
||
|
|
uint32_t size;
|
||
|
|
const struct cli_apiglobal *g = &cli_globals[i];
|
||
|
|
void **apiglobal = (void **)(((char *)ctx) + g->offset);
|
||
|
|
if (!apiglobal)
|
||
|
|
continue;
|
||
|
|
apiptr = *apiglobal;
|
||
|
|
size = globaltypesize(g->type);
|
||
|
|
ptr_register_glob_fixedid(&ptrinfos, apiptr, size, g->globalid - _FIRST_GLOBAL + 1);
|
||
|
|
}
|
||
|
|
ptr_register_glob_fixedid(&ptrinfos, bc->globalBytes, bc->numGlobalBytes,
|
||
|
|
cli_apicall_maxglobal - _FIRST_GLOBAL + 2);
|
||
|
|
|
||
|
|
gettimeofday(&tv0, NULL);
|
||
|
|
timeout.tv_usec = tv0.tv_usec + ctx->bytecode_timeout * 1000;
|
||
|
|
timeout.tv_sec = tv0.tv_sec + timeout.tv_usec / 1000000;
|
||
|
|
timeout.tv_usec %= 1000000;
|
||
|
|
|
||
|
|
do {
|
||
|
|
pc++;
|
||
|
|
if (!(pc % 5000)) {
|
||
|
|
gettimeofday(&tv1, NULL);
|
||
|
|
if (tv1.tv_sec > timeout.tv_sec ||
|
||
|
|
(tv1.tv_sec == timeout.tv_sec &&
|
||
|
|
tv1.tv_usec > timeout.tv_usec)) {
|
||
|
|
cli_warnmsg("Bytecode run timed out in interpreter after %u opcodes\n", pc);
|
||
|
|
stop = CL_ETIMEOUT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
TRACE_INST(inst);
|
||
|
|
|
||
|
|
switch (inst->interp_op) {
|
||
|
|
DEFINE_BINOP(OP_BC_ADD, res = op0 + op1);
|
||
|
|
DEFINE_BINOP(OP_BC_SUB, res = op0 - op1);
|
||
|
|
DEFINE_BINOP(OP_BC_MUL, res = op0 * op1);
|
||
|
|
|
||
|
|
DEFINE_BINOP(OP_BC_UDIV, CHECK_OP(op1 == 0, "bytecode attempted to execute udiv#0\n");
|
||
|
|
res = op0 / op1);
|
||
|
|
DEFINE_BINOP(OP_BC_SDIV, CHECK_OP(check_sdivops(sop0, sop1), "bytecode attempted to execute sdiv#0\n");
|
||
|
|
res = sop0 / sop1);
|
||
|
|
DEFINE_BINOP(OP_BC_UREM, CHECK_OP(op1 == 0, "bytecode attempted to execute urem#0\n");
|
||
|
|
res = op0 % op1);
|
||
|
|
DEFINE_BINOP(OP_BC_SREM, CHECK_OP(check_sdivops(sop0, sop1), "bytecode attempted to execute urem#0\n");
|
||
|
|
res = sop0 % sop1);
|
||
|
|
|
||
|
|
DEFINE_BINOP(OP_BC_SHL, CHECK_OP(op1 > inst->type, "bytecode attempted to execute shl greater than bitwidth\n");
|
||
|
|
res = op0 << op1);
|
||
|
|
DEFINE_BINOP(OP_BC_LSHR, CHECK_OP(op1 > inst->type, "bytecode attempted to execute lshr greater than bitwidth\n");
|
||
|
|
res = op0 >> op1);
|
||
|
|
DEFINE_BINOP(OP_BC_ASHR, CHECK_OP(op1 > inst->type, "bytecode attempted to execute ashr greater than bitwidth\n");
|
||
|
|
res = CLI_SRS(sop0, op1));
|
||
|
|
|
||
|
|
DEFINE_BINOP(OP_BC_AND, res = op0 & op1);
|
||
|
|
DEFINE_BINOP(OP_BC_OR, res = op0 | op1);
|
||
|
|
DEFINE_BINOP(OP_BC_XOR, res = op0 ^ op1);
|
||
|
|
|
||
|
|
// clang-format off
|
||
|
|
DEFINE_SCASTOP(OP_BC_SEXT,
|
||
|
|
CHOOSE(READ1(sres, inst->u.cast.source); res = sres ? ~0 : 0,
|
||
|
|
READ8(sres, inst->u.cast.source); res=sres=SIGNEXT(sres, inst->u.cast.mask),
|
||
|
|
READ16(sres, inst->u.cast.source); res=sres=SIGNEXT(sres, inst->u.cast.mask),
|
||
|
|
READ32(sres, inst->u.cast.source); res=sres=SIGNEXT(sres, inst->u.cast.mask),
|
||
|
|
READ64(sres, inst->u.cast.source); res=sres=SIGNEXT(sres, inst->u.cast.mask)));
|
||
|
|
// clang-format on
|
||
|
|
DEFINE_CASTOP(OP_BC_ZEXT,
|
||
|
|
CHOOSE(READ1(res, inst->u.cast.source),
|
||
|
|
READ8(res, inst->u.cast.source),
|
||
|
|
READ16(res, inst->u.cast.source),
|
||
|
|
READ32(res, inst->u.cast.source),
|
||
|
|
READ64(res, inst->u.cast.source)));
|
||
|
|
DEFINE_CASTOP(OP_BC_TRUNC,
|
||
|
|
CHOOSE(READ1(res, inst->u.cast.source),
|
||
|
|
READ8(res, inst->u.cast.source),
|
||
|
|
READ16(res, inst->u.cast.source),
|
||
|
|
READ32(res, inst->u.cast.source),
|
||
|
|
READ64(res, inst->u.cast.source)));
|
||
|
|
|
||
|
|
DEFINE_OP(OP_BC_BRANCH)
|
||
|
|
stop = jump(func, (values[inst->u.branch.condition] & 1) ? inst->u.branch.br_true : inst->u.branch.br_false,
|
||
|
|
&bb, &inst, &bb_inst);
|
||
|
|
continue;
|
||
|
|
|
||
|
|
DEFINE_OP(OP_BC_JMP)
|
||
|
|
stop = jump(func, inst->u.jump, &bb, &inst, &bb_inst);
|
||
|
|
continue;
|
||
|
|
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET * 5, uint8_t, READ1, WRITE8);
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET * 5 + 1, uint8_t, READ8, WRITE8);
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET * 5 + 2, uint16_t, READ16, WRITE16);
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET * 5 + 3, uint32_t, READ32, WRITE32);
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET * 5 + 4, uint64_t, READ64, WRITE64);
|
||
|
|
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET_VOID * 5, uint8_t, (void), (void));
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET_VOID * 5 + 1, uint8_t, (void), (void));
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET_VOID * 5 + 2, uint8_t, (void), (void));
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET_VOID * 5 + 3, uint8_t, (void), (void));
|
||
|
|
DEFINE_OP_BC_RET_N(OP_BC_RET_VOID * 5 + 4, uint8_t, (void), (void));
|
||
|
|
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_EQ, res = (op0 == op1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_NE, res = (op0 != op1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_UGT, res = (op0 > op1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_UGE, res = (op0 >= op1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_ULT, res = (op0 < op1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_ULE, res = (op0 <= op1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_SGT, res = (sop0 > sop1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_SGE, res = (sop0 >= sop1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_SLE, res = (sop0 <= sop1));
|
||
|
|
DEFINE_ICMPOP(OP_BC_ICMP_SLT, res = (sop0 < sop1));
|
||
|
|
|
||
|
|
case OP_BC_SELECT * 5: {
|
||
|
|
uint8_t t0, t1, t2;
|
||
|
|
READ1(t0, inst->u.three[0]);
|
||
|
|
READ1(t1, inst->u.three[1]);
|
||
|
|
READ1(t2, inst->u.three[2]);
|
||
|
|
WRITE8(inst->dest, t0 ? t1 : t2);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_SELECT * 5 + 1: {
|
||
|
|
uint8_t t0, t1, t2;
|
||
|
|
READ1(t0, inst->u.three[0]);
|
||
|
|
READ8(t1, inst->u.three[1]);
|
||
|
|
READ8(t2, inst->u.three[2]);
|
||
|
|
WRITE8(inst->dest, t0 ? t1 : t2);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_SELECT * 5 + 2: {
|
||
|
|
uint8_t t0;
|
||
|
|
uint16_t t1, t2;
|
||
|
|
READ1(t0, inst->u.three[0]);
|
||
|
|
READ16(t1, inst->u.three[1]);
|
||
|
|
READ16(t2, inst->u.three[2]);
|
||
|
|
WRITE16(inst->dest, t0 ? t1 : t2);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_SELECT * 5 + 3: {
|
||
|
|
uint8_t t0;
|
||
|
|
uint32_t t1, t2;
|
||
|
|
READ1(t0, inst->u.three[0]);
|
||
|
|
READ32(t1, inst->u.three[1]);
|
||
|
|
READ32(t2, inst->u.three[2]);
|
||
|
|
WRITE32(inst->dest, t0 ? t1 : t2);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_SELECT * 5 + 4: {
|
||
|
|
uint8_t t0;
|
||
|
|
uint64_t t1, t2;
|
||
|
|
READ1(t0, inst->u.three[0]);
|
||
|
|
READ64(t1, inst->u.three[1]);
|
||
|
|
READ64(t2, inst->u.three[2]);
|
||
|
|
WRITE64(inst->dest, t0 ? t1 : t2);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
DEFINE_OP(OP_BC_CALL_API)
|
||
|
|
{
|
||
|
|
const struct cli_apicall *api = &cli_apicalls[inst->u.ops.funcid];
|
||
|
|
int32_t res32;
|
||
|
|
int64_t res64;
|
||
|
|
CHECK_APIID(inst->u.ops.funcid);
|
||
|
|
TRACE_API(api->name, inst->dest, inst->type, stack_depth);
|
||
|
|
switch (api->kind) {
|
||
|
|
case 0: {
|
||
|
|
int32_t a, b;
|
||
|
|
READ32(a, inst->u.ops.ops[0]);
|
||
|
|
READ32(b, inst->u.ops.ops[1]);
|
||
|
|
res32 = cli_apicalls0[api->idx](ctx, a, b);
|
||
|
|
WRITE32(inst->dest, res32);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 1: {
|
||
|
|
void *arg1;
|
||
|
|
unsigned arg2, arg1size;
|
||
|
|
READ32(arg2, inst->u.ops.ops[1]);
|
||
|
|
/* check that arg2 is size of arg1 */
|
||
|
|
arg1size = arg2;
|
||
|
|
for (i = 0; i < sizeof(apisize_override) / sizeof(apisize_override[0]); i++) {
|
||
|
|
if (cli_apicalls1[api->idx] == apisize_override[i].api) {
|
||
|
|
arg1size = apisize_override[i].override_size;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
READPOP(arg1, inst->u.ops.ops[0], arg1size);
|
||
|
|
res32 = cli_apicalls1[api->idx](ctx, arg1, arg2);
|
||
|
|
WRITE32(inst->dest, res32);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 2: {
|
||
|
|
int32_t a;
|
||
|
|
READ32(a, inst->u.ops.ops[0]);
|
||
|
|
res32 = cli_apicalls2[api->idx](ctx, a);
|
||
|
|
WRITE32(inst->dest, res32);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 3: {
|
||
|
|
int32_t a;
|
||
|
|
void *resp;
|
||
|
|
READ32(a, inst->u.ops.ops[0]);
|
||
|
|
resp = cli_apicalls3[api->idx](ctx, a);
|
||
|
|
res64 = ptr_register_glob(&ptrinfos, resp, a);
|
||
|
|
WRITE64(inst->dest, res64);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 4: {
|
||
|
|
int32_t arg2, arg3, arg4, arg5;
|
||
|
|
void *arg1;
|
||
|
|
READ32(arg2, inst->u.ops.ops[1]);
|
||
|
|
/* check that arg2 is size of arg1 */
|
||
|
|
READP(arg1, inst->u.ops.ops[0], arg2);
|
||
|
|
READ32(arg3, inst->u.ops.ops[2]);
|
||
|
|
READ32(arg4, inst->u.ops.ops[3]);
|
||
|
|
READ32(arg5, inst->u.ops.ops[4]);
|
||
|
|
res32 = cli_apicalls4[api->idx](ctx, arg1, arg2, arg3, arg4, arg5);
|
||
|
|
WRITE32(inst->dest, res32);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 5: {
|
||
|
|
res32 = cli_apicalls5[api->idx](ctx);
|
||
|
|
WRITE32(inst->dest, res32);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 6: {
|
||
|
|
int32_t arg1, arg2;
|
||
|
|
void *resp;
|
||
|
|
READ32(arg1, inst->u.ops.ops[0]);
|
||
|
|
READ32(arg2, inst->u.ops.ops[1]);
|
||
|
|
resp = cli_apicalls6[api->idx](ctx, arg1, arg2);
|
||
|
|
res64 = ptr_register_glob(&ptrinfos, resp, arg2);
|
||
|
|
WRITE64(inst->dest, res64);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 7: {
|
||
|
|
int32_t arg1, arg2, arg3;
|
||
|
|
READ32(arg1, inst->u.ops.ops[0]);
|
||
|
|
READ32(arg2, inst->u.ops.ops[1]);
|
||
|
|
READ32(arg3, inst->u.ops.ops[2]);
|
||
|
|
res32 = cli_apicalls7[api->idx](ctx, arg1, arg2, arg3);
|
||
|
|
WRITE32(inst->dest, res32);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 8: {
|
||
|
|
int32_t arg2, arg4;
|
||
|
|
void *arg1, *arg3;
|
||
|
|
int32_t resp;
|
||
|
|
READ32(arg2, inst->u.ops.ops[1]);
|
||
|
|
/* check that arg2 is size of arg1 */
|
||
|
|
READP(arg1, inst->u.ops.ops[0], arg2);
|
||
|
|
READ32(arg4, inst->u.ops.ops[3]);
|
||
|
|
READP(arg3, inst->u.ops.ops[2], arg4);
|
||
|
|
resp = cli_apicalls8[api->idx](ctx, arg1, arg2, arg3, arg4);
|
||
|
|
WRITE32(inst->dest, resp);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 9: {
|
||
|
|
int32_t arg2, arg3;
|
||
|
|
void *arg1;
|
||
|
|
int32_t resp;
|
||
|
|
READ32(arg2, inst->u.ops.ops[1]);
|
||
|
|
/* check that arg2 is size of arg1 */
|
||
|
|
READP(arg1, inst->u.ops.ops[0], arg2);
|
||
|
|
READ32(arg3, inst->u.ops.ops[2]);
|
||
|
|
resp = cli_apicalls9[api->idx](ctx, arg1, arg2, arg3);
|
||
|
|
WRITE32(inst->dest, resp);
|
||
|
|
break;
|
||
|
|
};
|
||
|
|
default:
|
||
|
|
cli_warnmsg("bytecode: type %u apicalls not yet implemented!\n", api->kind);
|
||
|
|
stop = CL_EBYTECODE;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
DEFINE_OP(OP_BC_CALL_DIRECT)
|
||
|
|
CHECK_FUNCID(inst->u.ops.funcid);
|
||
|
|
func2 = &bc->funcs[inst->u.ops.funcid];
|
||
|
|
CHECK_EQ(func2->numArgs, inst->u.ops.numOps);
|
||
|
|
old_values = values;
|
||
|
|
stack_entry = allocate_stack(&stack, stack_entry, func2, func, inst->dest,
|
||
|
|
bb, bb_inst);
|
||
|
|
if (!stack_entry) {
|
||
|
|
stop = CL_EMEM;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
values = stack_entry->values;
|
||
|
|
/* TODO: unregister on ret */
|
||
|
|
TRACE_EXEC(inst->u.ops.funcid, inst->dest, inst->type, stack_depth);
|
||
|
|
if (stack_depth > 10000) {
|
||
|
|
cli_warnmsg("bytecode: stack depth exceeded\n");
|
||
|
|
stop = CL_EBYTECODE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
j = 0;
|
||
|
|
for (i = 0; i < func2->numArgs; i++) {
|
||
|
|
switch (inst->u.ops.opsizes[i]) {
|
||
|
|
case 1: {
|
||
|
|
uint8_t v;
|
||
|
|
READOLD8(v, inst->u.ops.ops[i]);
|
||
|
|
CHECK_GT(func2->numBytes, j);
|
||
|
|
values[j++] = v;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 2: {
|
||
|
|
uint16_t v;
|
||
|
|
READOLD16(v, inst->u.ops.ops[i]);
|
||
|
|
j = (j + 1) & ~1;
|
||
|
|
CHECK_GT(func2->numBytes, j);
|
||
|
|
*(uint16_t *)&values[j] = v;
|
||
|
|
j += 2;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 4: {
|
||
|
|
uint32_t v;
|
||
|
|
READOLD32(v, inst->u.ops.ops[i]);
|
||
|
|
j = (j + 3) & ~3;
|
||
|
|
CHECK_GT(func2->numBytes, j);
|
||
|
|
*(uint32_t *)&values[j] = v;
|
||
|
|
j += 4;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 8: {
|
||
|
|
uint64_t v;
|
||
|
|
READOLD64(v, inst->u.ops.ops[i]);
|
||
|
|
j = (j + 7) & ~7;
|
||
|
|
CHECK_GT(func2->numBytes, j);
|
||
|
|
*(uint64_t *)&values[j] = v;
|
||
|
|
j += 8;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
func = func2;
|
||
|
|
stackid = ptr_register_stack(&ptrinfos, values, 0, func->numBytes) >> 32;
|
||
|
|
CHECK_GT(func->numBB, 0);
|
||
|
|
stop = jump(func, 0, &bb, &inst, &bb_inst);
|
||
|
|
stack_depth++;
|
||
|
|
continue;
|
||
|
|
|
||
|
|
case OP_BC_COPY * 5: {
|
||
|
|
uint8_t op;
|
||
|
|
READ1(op, BINOP(0));
|
||
|
|
WRITE8(BINOP(1), op);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_COPY * 5 + 1: {
|
||
|
|
uint8_t op;
|
||
|
|
READ8(op, BINOP(0));
|
||
|
|
WRITE8(BINOP(1), op);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_COPY * 5 + 2: {
|
||
|
|
uint16_t op;
|
||
|
|
READ16(op, BINOP(0));
|
||
|
|
WRITE16(BINOP(1), op);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_COPY * 5 + 3: {
|
||
|
|
uint32_t op;
|
||
|
|
READ32(op, BINOP(0));
|
||
|
|
WRITE32(BINOP(1), op);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_COPY * 5 + 4: {
|
||
|
|
uint64_t op;
|
||
|
|
READ64(op, BINOP(0));
|
||
|
|
WRITE64(BINOP(1), op);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case OP_BC_LOAD * 5:
|
||
|
|
case OP_BC_LOAD * 5 + 1: {
|
||
|
|
uint8_t *ptr;
|
||
|
|
READPOP(ptr, inst->u.unaryop, 1);
|
||
|
|
WRITE8(inst->dest, (*ptr));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_LOAD * 5 + 2: {
|
||
|
|
const union unaligned_16 *ptr;
|
||
|
|
READPOP(ptr, inst->u.unaryop, 2);
|
||
|
|
WRITE16(inst->dest, (ptr->una_u16));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_LOAD * 5 + 3: {
|
||
|
|
const union unaligned_32 *ptr;
|
||
|
|
READPOP(ptr, inst->u.unaryop, 4);
|
||
|
|
WRITE32(inst->dest, (ptr->una_u32));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_LOAD * 5 + 4: {
|
||
|
|
const union unaligned_64 *ptr;
|
||
|
|
READPOP(ptr, inst->u.unaryop, 8);
|
||
|
|
WRITE64(inst->dest, (ptr->una_u64));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case OP_BC_STORE * 5: {
|
||
|
|
uint8_t *ptr;
|
||
|
|
uint8_t v;
|
||
|
|
READP(ptr, BINOP(1), 1);
|
||
|
|
READ1(v, BINOP(0));
|
||
|
|
*ptr = v;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_STORE * 5 + 1: {
|
||
|
|
uint8_t *ptr;
|
||
|
|
uint8_t v;
|
||
|
|
READP(ptr, BINOP(1), 1);
|
||
|
|
READ8(v, BINOP(0));
|
||
|
|
*ptr = v;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_STORE * 5 + 2: {
|
||
|
|
union unaligned_16 *ptr;
|
||
|
|
uint16_t v;
|
||
|
|
READP(ptr, BINOP(1), 2);
|
||
|
|
READ16(v, BINOP(0));
|
||
|
|
ptr->una_s16 = v;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_STORE * 5 + 3: {
|
||
|
|
union unaligned_32 *ptr;
|
||
|
|
uint32_t v;
|
||
|
|
READP(ptr, BINOP(1), 4);
|
||
|
|
READ32(v, BINOP(0));
|
||
|
|
ptr->una_u32 = v;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case OP_BC_STORE * 5 + 4: {
|
||
|
|
union unaligned_64 *ptr;
|
||
|
|
uint64_t v;
|
||
|
|
READP(ptr, BINOP(1), 8);
|
||
|
|
READ64(v, BINOP(0));
|
||
|
|
ptr->una_u64 = v;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_ISBIGENDIAN)
|
||
|
|
{
|
||
|
|
WRITE8(inst->dest, WORDS_BIGENDIAN);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_GEPZ)
|
||
|
|
{
|
||
|
|
int64_t ptr, iptr;
|
||
|
|
int32_t off;
|
||
|
|
READ32(off, inst->u.three[2]);
|
||
|
|
|
||
|
|
// negative values checking, valid for intermediate GEP calculations
|
||
|
|
if (off < 0) {
|
||
|
|
cli_dbgmsg("bytecode warning: found GEP with negative offset %d!\n", off);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(inst->interp_op % 5)) {
|
||
|
|
// how do negative offsets affect pointer initialization?
|
||
|
|
WRITE64(inst->dest, ptr_compose(stackid,
|
||
|
|
inst->u.three[1] + off));
|
||
|
|
} else {
|
||
|
|
READ64(ptr, inst->u.three[1]);
|
||
|
|
off += (ptr & 0x00000000ffffffffULL);
|
||
|
|
iptr = (ptr & 0xffffffff00000000ULL) + (uint64_t)(off);
|
||
|
|
WRITE64(inst->dest, ptr + off);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_MEMCMP)
|
||
|
|
{
|
||
|
|
int32_t arg3;
|
||
|
|
void *arg1, *arg2;
|
||
|
|
READ32(arg3, inst->u.three[2]);
|
||
|
|
READPOP(arg1, inst->u.three[0], arg3);
|
||
|
|
READPOP(arg2, inst->u.three[1], arg3);
|
||
|
|
WRITE32(inst->dest, memcmp(arg1, arg2, arg3));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_MEMCPY)
|
||
|
|
{
|
||
|
|
int64_t arg3;
|
||
|
|
void *arg1, *arg2;
|
||
|
|
|
||
|
|
READ32(arg3, inst->u.three[2]);
|
||
|
|
READPOP(arg1, inst->u.three[0], arg3);
|
||
|
|
READPOP(arg2, inst->u.three[1], arg3);
|
||
|
|
memcpy(arg1, arg2, (int32_t)arg3);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_MEMMOVE)
|
||
|
|
{
|
||
|
|
int64_t arg3;
|
||
|
|
void *arg1, *arg2;
|
||
|
|
|
||
|
|
READ64(arg3, inst->u.three[2]);
|
||
|
|
READPOP(arg1, inst->u.three[0], arg3);
|
||
|
|
READPOP(arg2, inst->u.three[1], arg3);
|
||
|
|
memmove(arg1, arg2, (int32_t)arg3);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_MEMSET)
|
||
|
|
{
|
||
|
|
int64_t arg3;
|
||
|
|
int32_t arg2;
|
||
|
|
void *arg1;
|
||
|
|
|
||
|
|
READ64(arg3, inst->u.three[2]);
|
||
|
|
READPOP(arg1, inst->u.three[0], arg3);
|
||
|
|
READ32(arg2, inst->u.three[1]);
|
||
|
|
memset(arg1, arg2, (int32_t)arg3);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_BSWAP16)
|
||
|
|
{
|
||
|
|
int16_t arg1;
|
||
|
|
READ16(arg1, inst->u.unaryop);
|
||
|
|
WRITE16(inst->dest, cbswap16(arg1));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_BSWAP32)
|
||
|
|
{
|
||
|
|
int32_t arg1;
|
||
|
|
READ32(arg1, inst->u.unaryop);
|
||
|
|
WRITE32(inst->dest, cbswap32(arg1));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_BSWAP64)
|
||
|
|
{
|
||
|
|
int64_t arg1;
|
||
|
|
READ64(arg1, inst->u.unaryop);
|
||
|
|
WRITE64(inst->dest, cbswap64(arg1));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_PTRDIFF32)
|
||
|
|
{
|
||
|
|
int64_t ptr1, ptr2;
|
||
|
|
if (BINOP(0) & 0x40000000)
|
||
|
|
ptr1 = ptr_compose(stackid, BINOP(0) & 0xbfffffff);
|
||
|
|
else
|
||
|
|
READ64(ptr1, BINOP(0));
|
||
|
|
if (BINOP(1) & 0x40000000)
|
||
|
|
ptr2 = ptr_compose(stackid, BINOP(1) & 0xbfffffff);
|
||
|
|
else
|
||
|
|
READ64(ptr2, BINOP(1));
|
||
|
|
WRITE32(inst->dest, ptr_diff32(ptr1, ptr2));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_PTRTOINT64)
|
||
|
|
{
|
||
|
|
int64_t ptr;
|
||
|
|
if (inst->u.unaryop & 0x40000000)
|
||
|
|
ptr = ptr_compose(stackid, inst->u.unaryop & 0xbfffffff);
|
||
|
|
else
|
||
|
|
READ64(ptr, BINOP(0));
|
||
|
|
WRITE64(inst->dest, ptr);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
DEFINE_OP(OP_BC_GEP1)
|
||
|
|
{
|
||
|
|
int64_t ptr, iptr;
|
||
|
|
int32_t off;
|
||
|
|
READ32(off, inst->u.three[2]);
|
||
|
|
|
||
|
|
// negative values checking, valid for intermediate GEP calculations
|
||
|
|
if (off < 0) {
|
||
|
|
cli_dbgmsg("bytecode warning: GEP with negative offset %d!\n", off);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(inst->interp_op % 5)) {
|
||
|
|
// how do negative offsets affect pointer initialization?
|
||
|
|
cli_dbgmsg("bytecode warning: untested case for GEP1\n");
|
||
|
|
off *= inst->u.three[0];
|
||
|
|
WRITE64(inst->dest, ptr_compose(stackid,
|
||
|
|
inst->u.three[1] + off));
|
||
|
|
} else {
|
||
|
|
READ64(ptr, inst->u.three[1]);
|
||
|
|
off *= inst->u.three[0];
|
||
|
|
off += (ptr & 0x00000000ffffffff);
|
||
|
|
iptr = (ptr & 0xffffffff00000000) + (uint64_t)(off);
|
||
|
|
WRITE64(inst->dest, iptr);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
/* TODO: implement OP_BC_GEP1, OP_BC_GEP2, OP_BC_GEPN */
|
||
|
|
default:
|
||
|
|
cli_errmsg("Opcode %u of type %u is not implemented yet!\n",
|
||
|
|
inst->interp_op / 5, inst->interp_op % 5);
|
||
|
|
stop = CL_EARG;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
bb_inst++;
|
||
|
|
inst++;
|
||
|
|
if (bb) {
|
||
|
|
CHECK_GT(bb->numInsts, bb_inst);
|
||
|
|
}
|
||
|
|
} while (stop == CL_SUCCESS);
|
||
|
|
if (cli_debug_flag) {
|
||
|
|
gettimeofday(&tv1, NULL);
|
||
|
|
tv1.tv_sec -= tv0.tv_sec;
|
||
|
|
tv1.tv_usec -= tv0.tv_usec;
|
||
|
|
cli_dbgmsg("interpreter bytecode run finished in %luus, after executing %u opcodes\n",
|
||
|
|
tv1.tv_sec * 1000000 + tv1.tv_usec, pc);
|
||
|
|
}
|
||
|
|
if (stop == CL_EBYTECODE) {
|
||
|
|
cli_event_error_str(ctx->bc_events, "interpreter finished with error\n");
|
||
|
|
cli_dbgmsg("interpreter finished with error\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
cli_stack_destroy(&stack);
|
||
|
|
free(ptrinfos.stack_infos);
|
||
|
|
free(ptrinfos.glob_infos);
|
||
|
|
return stop == CL_BREAK ? CL_SUCCESS : stop;
|
||
|
|
}
|