| e0c4fd85 |
/*
* Execute ClamAV bytecode.
* |
| e1cbc270 |
* Copyright (C) 2013-2019 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
* Copyright (C) 2009-2013 Sourcefire, Inc. |
| e0c4fd85 |
*
* Authors: Török Edvin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#if HAVE_CONFIG_H
#include "clamav-config.h"
#endif |
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|
| e0c4fd85 |
#include "clamav.h"
#include "others.h"
#include "bytecode.h"
#include "bytecode_priv.h" |
| cf0cd429 |
#include "type_desc.h" |
| e0c4fd85 |
#include "readdb.h"
#include <string.h> |
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#ifndef _WIN32
#include <sys/time.h>
#endif |
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#include "bytecode_api_impl.h"
#include "disasm-common.h" |
| e0c4fd85 |
|
| 8596e278 |
/* Enable this to catch more bugs in the RC phase */ |
| 15fd260a |
#define CL_BYTECODE_SAFE |
| 8596e278 |
|
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#ifdef CL_BYTECODE_SAFE |
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/* These checks will also be done by the bytecode verifier, but for
* debugging purposes we have explicit checks, these should never fail! */ |
| 15fd260a |
#ifdef CL_DEBUG |
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static int never_inline bcfail(const char *msg, long a, long b, |
| 288057e9 |
const char *file, unsigned line) |
| e0c4fd85 |
{ |
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cli_warnmsg("bytecode: check failed %s (%lx and %lx) at %s:%u\n", msg, a, b, file, line); |
| e0c4fd85 |
return CL_EARG;
} |
| 15fd260a |
#else |
| 288057e9 |
#define bcfail(msg, a, b, f, l) CL_EBYTECODE |
| 15fd260a |
#endif |
| 82ca2ab4 |
|
| 288057e9 |
#define CHECK_FUNCID(funcid) \
do { \
if (funcid >= bc->num_func) return bcfail("funcid out of bounds!", funcid, bc->num_func, __FILE__, __LINE__); \
} while (0)
#define CHECK_APIID(funcid) \
do { \
if (funcid >= cli_apicall_maxapi) return bcfail("APIid out of bounds!", funcid, cli_apicall_maxapi, __FILE__, __LINE__); \
} while (0)
#define CHECK_EQ(a, b) \
do { \
if ((a) != (b)) return bcfail("Values " #a " and " #b " don't match!", (a), (b), __FILE__, __LINE__); \
} while (0)
#define CHECK_GT(a, b) \
do { \
if ((a) <= (b)) return bcfail("Condition failed " #a " > " #b, (a), (b), __FILE__, __LINE__); \
} while (0) |
| 15fd260a |
|
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#else |
| 9cbece5c |
static inline int bcfail(const char *msg, long a, long b, |
| 90c0acc7 |
const char *file, unsigned line) {} |
| 288057e9 |
#define CHECK_FUNCID(x) ;
#define CHECK_APIID(x) ;
#define CHECK_EQ(a, b)
#define CHECK_GT(a, b) |
| e0c4fd85 |
#endif |
| 48692aff |
#if 0 /* too verbose, use #ifdef CL_DEBUG if needed */ |
| 288057e9 |
#define CHECK_UNREACHABLE \
do { \
cli_dbgmsg("bytecode: unreachable executed!\n"); \
return CL_EBYTECODE; \
} while (0) |
| a15fc904 |
#define TRACE_PTR(ptr, s) cli_dbgmsg("bytecode trace: ptr %llx, +%x\n", ptr, s); |
| 15fd260a |
#define TRACE_R(x) cli_dbgmsg("bytecode trace: %u, read %llx\n", pc, (long long)x);
#define TRACE_W(x, w, p) cli_dbgmsg("bytecode trace: %u, write%d @%u %llx\n", pc, p, w, (long long)(x));
#define TRACE_EXEC(id, dest, ty, stack) cli_dbgmsg("bytecode trace: executing %d, -> %u (%u); %u\n", id, dest, ty, stack) |
| 43422579 |
#define TRACE_INST(inst) \
do { \
unsigned bbnum = 0; \
printf("LibClamAV debug: bytecode trace: executing instruction "); \
cli_byteinst_describe(inst, &bbnum); \
printf("\n"); \
} while (0) |
| 1678ef9e |
#define TRACE_API(s, dest, ty, stack) cli_dbgmsg("bytecode trace: executing %s, -> %u (%u); %u\n", s, dest, ty, stack) |
| 15fd260a |
#else
#define CHECK_UNREACHABLE return CL_EBYTECODE |
| a15fc904 |
#define TRACE_PTR(ptr, s) |
| 15fd260a |
#define TRACE_R(x)
#define TRACE_W(x, w, p)
#define TRACE_EXEC(id, dest, ty, stack) |
| 92288e16 |
#define TRACE_INST(inst) |
| 1678ef9e |
#define TRACE_API(s, dest, ty, stack) |
| 15fd260a |
#endif
|
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#define SIGNEXT(a, from) CLI_SRS(((int64_t)(a)) << (64 - (from)), (64 - (from))) |
| cfec3d90 |
|
| 6922903a |
#ifdef CL_DEBUG
#undef always_inline
#define always_inline
#endif
|
| cfec3d90 |
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, |
| 288057e9 |
unsigned *bb_inst) |
| 8c0933ce |
{
CHECK_GT(func->numBB, bbid); |
| 288057e9 |
*bb = &func->BB[bbid];
*inst = (*bb)->insts; |
| 8c0933ce |
*bb_inst = 0; |
| ec5cccc7 |
return 0; |
| 8c0933ce |
}
|
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#define STACK_CHUNKSIZE 65536 |
| cfec3d90 |
struct stack_chunk {
struct stack_chunk *prev;
unsigned used;
union { |
| 90c0acc7 |
void *align;
char data[STACK_CHUNKSIZE]; |
| cfec3d90 |
} u;
};
struct stack { |
| 288057e9 |
struct stack_chunk *chunk; |
| cfec3d90 |
uint16_t last_size;
};
|
| ac17fc6c |
/* type with largest alignment that we use (in general it is a long double, but
* thats too big alignment for us) */
typedef uint64_t align_t;
|
| 288057e9 |
static always_inline void *cli_stack_alloc(struct stack *stack, unsigned bytes) |
| cfec3d90 |
{
struct stack_chunk *chunk = stack->chunk;
uint16_t last_size_off;
/* last_size is stored after data */
/* align bytes to pointer size */ |
| 288057e9 |
bytes = (bytes + sizeof(uint16_t) + sizeof(align_t)) & ~(sizeof(align_t) - 1); |
| cfec3d90 |
last_size_off = bytes - 2;
if (chunk && (chunk->used + bytes <= STACK_CHUNKSIZE)) { |
| 90c0acc7 |
/* there is still room in this chunk */
void *ret; |
| cfec3d90 |
|
| 288057e9 |
*(uint16_t *)&chunk->u.data[chunk->used + last_size_off] = stack->last_size;
stack->last_size = bytes / sizeof(align_t); |
| cfec3d90 |
|
| 90c0acc7 |
ret = chunk->u.data + chunk->used;
chunk->used += bytes;
return ret; |
| cfec3d90 |
}
|
| 288057e9 |
if (bytes >= STACK_CHUNKSIZE) { |
| 90c0acc7 |
cli_warnmsg("cli_stack_alloc: Attempt to allocate more than STACK_CHUNKSIZE bytes: %u!\n", bytes);
return NULL; |
| cfec3d90 |
}
/* not enough room here, allocate new chunk */
chunk = cli_malloc(sizeof(*stack->chunk)); |
| 241e7eb1 |
if (!chunk) { |
| 48692aff |
cli_warnmsg("cli_stack_alloc: Unable to allocate memory for stack-chunk: bytes: %zu!\n", sizeof(*stack->chunk)); |
| 241e7eb1 |
return NULL;
} |
| cfec3d90 |
|
| 288057e9 |
*(uint16_t *)&chunk->u.data[last_size_off] = stack->last_size;
stack->last_size = bytes / sizeof(align_t); |
| cfec3d90 |
|
| 288057e9 |
chunk->used = bytes;
chunk->prev = stack->chunk; |
| cfec3d90 |
stack->chunk = chunk;
return chunk->u.data;
}
static always_inline void cli_stack_free(struct stack *stack, void *data)
{
uint16_t last_size;
struct stack_chunk *chunk = stack->chunk;
if (!chunk) { |
| 90c0acc7 |
cli_warnmsg("cli_stack_free: stack empty!\n");
return; |
| cfec3d90 |
} |
| 288057e9 |
if ((chunk->u.data + chunk->used) != ((char *)data + stack->last_size * sizeof(align_t))) { |
| 90c0acc7 |
cli_warnmsg("cli_stack_free: wrong free order: %p, expected %p\n", |
| 288057e9 |
data, chunk->u.data + chunk->used - stack->last_size * sizeof(align_t)); |
| 90c0acc7 |
return; |
| cfec3d90 |
} |
| 288057e9 |
last_size = *(uint16_t *)&chunk->u.data[chunk->used - 2];
if (chunk->used < stack->last_size * sizeof(align_t)) { |
| 90c0acc7 |
cli_warnmsg("cli_stack_free: last_size is corrupt!\n");
return; |
| cfec3d90 |
} |
| 288057e9 |
chunk->used -= stack->last_size * sizeof(align_t); |
| cfec3d90 |
stack->last_size = last_size;
if (!chunk->used) { |
| 90c0acc7 |
stack->chunk = chunk->prev;
free(chunk); |
| cfec3d90 |
}
}
static void cli_stack_destroy(struct stack *stack)
{
struct stack_chunk *chunk = stack->chunk;
while (chunk) { |
| 90c0acc7 |
stack->chunk = chunk->prev;
free(chunk);
chunk = stack->chunk; |
| cfec3d90 |
}
}
struct stack_entry {
struct stack_entry *prev;
const struct cli_bc_func *func; |
| 6922903a |
operand_t ret; |
| cfec3d90 |
unsigned bb_inst; |
| 2545f976 |
struct cli_bc_bb *bb; |
| 6922903a |
char *values; |
| cfec3d90 |
};
static always_inline struct stack_entry *allocate_stack(struct stack *stack, |
| 90c0acc7 |
struct stack_entry *prev,
const struct cli_bc_func *func,
const struct cli_bc_func *func_old,
operand_t ret,
struct cli_bc_bb *bb,
unsigned bb_inst) |
| ec5cccc7 |
{ |
| 6922903a |
char *values; |
| 288057e9 |
struct stack_entry *entry = cli_stack_alloc(stack, sizeof(*entry) + sizeof(*values) * func->numBytes); |
| cfec3d90 |
if (!entry) |
| 90c0acc7 |
return NULL; |
| 288057e9 |
entry->prev = prev;
entry->func = func_old;
entry->ret = ret;
entry->bb = bb; |
| cfec3d90 |
entry->bb_inst = bb_inst;
/* we allocated room for values right after stack_entry! */ |
| 288057e9 |
entry->values = values = (char *)&entry[1];
memcpy(&values[func->numBytes - func->numConstants * 8], func->constants,
sizeof(*values) * func->numConstants * 8); |
| cfec3d90 |
return entry;
}
static always_inline struct stack_entry *pop_stack(struct stack *stack, |
| 90c0acc7 |
struct stack_entry *stack_entry,
const struct cli_bc_func **func,
operand_t *ret,
struct cli_bc_bb **bb,
unsigned *bb_inst) |
| cfec3d90 |
{
void *data; |
| 288057e9 |
*func = stack_entry->func;
*ret = stack_entry->ret;
*bb = stack_entry->bb;
*bb_inst = stack_entry->bb_inst;
data = stack_entry; |
| cfec3d90 |
stack_entry = stack_entry->prev;
cli_stack_free(stack, data);
return stack_entry; |
| ec5cccc7 |
}
|
| 82ca2ab4 |
/*
*
* p, p+1, p+2, p+3 <- gt
CHECK_EQ((p)&1, 0);
CHECK_EQ((p)&3, 0);
CHECK_EQ((p)&7, 0);
*/ |
| 288057e9 |
#define WRITE8(p, x) \
CHECK_GT(func->numBytes, p); \
TRACE_W(x, p, 8); \
*(uint8_t *)&values[p] = x
#define WRITE16(p, x) \
CHECK_GT(func->numBytes, p + 1); \
CHECK_EQ((p)&1, 0); \
TRACE_W(x, p, 16); \
*(uint16_t *)&values[p] = x
#define WRITE32(p, x) \
CHECK_GT(func->numBytes, p + 3); \
CHECK_EQ((p)&3, 0); \
TRACE_W(x, p, 32); \
*(uint32_t *)&values[p] = x
#define WRITE64(p, x) \
CHECK_GT(func->numBytes, p + 7); \
CHECK_EQ((p)&7, 0); \
TRACE_W(x, p, 64); \
*(uint64_t *)&values[p] = x
#define WRITEP(x, p) \
CHECK_GT(func->numBytes, p + PSIZE - 1); \
CHECK_EQ((p) & (PSIZE - 1), 0); \
TRACE_W(x, p, PSIZE * 8); \
*(void **)&values[p] = x |
| 6922903a |
|
| df5c921d |
#define uint_type(n) uint##n##_t |
| 288057e9 |
#define READNfrom(maxBytes, from, x, n, p) \
CHECK_GT((maxBytes), (p) + (n / 8) - 1); \
CHECK_EQ((p) & (n / 8 - 1), 0); \
x = *(uint_type(n) *)&(from)[(p)]; \ |
| 11e86f8c |
TRACE_R(x) |
| df5c921d |
|
| 288057e9 |
#define READN(x, n, p) \
do { \
if (p & 0x80000000) { \
uint32_t pg = p & 0x7fffffff; \
if (!pg) { \
x = 0; \
} else { \
READNfrom(bc->numGlobalBytes, bc->globalBytes, x, n, pg); \
} \
} else { \
READNfrom(func->numBytes, values, x, n, p); \
} \
} while (0)
#define READ1(x, p) \
READN(x, 8, p); \
x = x & 1 |
| df5c921d |
#define READ8(x, p) READN(x, 8, p)
#define READ16(x, p) READN(x, 16, p)
#define READ32(x, p) READN(x, 32, p)
#define READ64(x, p) READN(x, 64, p)
|
| 9cbece5c |
#define PSIZE sizeof(int64_t) |
| 288057e9 |
#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) \
} \
} |
| 6922903a |
|
| 288057e9 |
#define READOLD8(x, p) \
CHECK_GT(func->numBytes, p); \
x = *(uint8_t *)&old_values[p]; \ |
| 11e86f8c |
TRACE_R(x) |
| 288057e9 |
#define READOLD16(x, p) \
CHECK_GT(func->numBytes, p + 1); \
CHECK_EQ((p)&1, 0); \
x = *(uint16_t *)&old_values[p]; \ |
| 11e86f8c |
TRACE_R(x) |
| 288057e9 |
#define READOLD32(x, p) \
CHECK_GT(func->numBytes, p + 3); \
CHECK_EQ((p)&3, 0); \
x = *(uint32_t *)&old_values[p]; \ |
| 11e86f8c |
TRACE_R(x) |
| 288057e9 |
#define READOLD64(x, p) \
CHECK_GT(func->numBytes, p + 7); \
CHECK_EQ((p)&7, 0); \
x = *(uint64_t *)&old_values[p]; \ |
| 11e86f8c |
TRACE_R(x) |
| 82ca2ab4 |
#define BINOP(i) inst->u.binop[i]
|
| 52dd3a6b |
#define DEFINE_BINOP_BC_HELPER(opc, OP, W0, W1, W2, W3, W4) \ |
| 288057e9 |
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; \
} |
| 82ca2ab4 |
|
| 52dd3a6b |
#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) |
| 82ca2ab4 |
|
| 288057e9 |
#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; \
} |
| e4a0f2c9 |
#define DEFINE_CASTOP(opc, OP) DEFINE_SCASTOP(opc, OP; (void)sres) |
| 82ca2ab4 |
|
| 288057e9 |
#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: |
| 82ca2ab4 |
#define CHOOSE(OP0, OP1, OP2, OP3, OP4) \ |
| 288057e9 |
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; \ |
| 82ca2ab4 |
}
|
| 288057e9 |
#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; \
} |
| 6922903a |
|
| 9cbece5c |
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;
}
|
| 44e13431 |
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) { |
| 90c0acc7 |
(void)bcfail("difference of pointers not pointing to same object!", ptrid1, ptrid2, __FILE__, __LINE__);
/* invalid diff */
return 0x40000000; |
| 44e13431 |
}
return (uint32_t)ptr1 - (uint32_t)ptr2;
}
|
| 4993d6cf |
static inline int64_t ptr_register_stack(struct ptr_infos *infos, |
| 90c0acc7 |
char *values,
uint32_t off, uint32_t size) |
| 9cbece5c |
{ |
| 288057e9 |
unsigned n = infos->nstacks + 1; |
| 9cbece5c |
struct ptr_info *sinfos = cli_realloc(infos->stack_infos, |
| 288057e9 |
sizeof(*sinfos) * n); |
| 9cbece5c |
if (!sinfos) |
| 90c0acc7 |
return 0; |
| 9cbece5c |
infos->stack_infos = sinfos; |
| 288057e9 |
infos->nstacks = n;
sinfos = &sinfos[n - 1];
sinfos->base = (uint8_t *)values + off;
sinfos->size = size; |
| 4993d6cf |
return ptr_compose(-n, 0); |
| 9cbece5c |
}
|
| 52d0d8bc |
static inline int64_t ptr_register_glob_fixedid(struct ptr_infos *infos, |
| 90c0acc7 |
void *values, uint32_t size, unsigned n) |
| 9cbece5c |
{ |
| 52d0d8bc |
struct ptr_info *sinfos;
if (n > infos->nglobs) { |
| 288057e9 |
sinfos = cli_realloc(infos->glob_infos, sizeof(*sinfos) * n); |
| 90c0acc7 |
if (!sinfos)
return 0; |
| 288057e9 |
memset(sinfos + infos->nglobs, 0, (n - infos->nglobs) * sizeof(*sinfos)); |
| 90c0acc7 |
infos->glob_infos = sinfos; |
| 288057e9 |
infos->nglobs = n; |
| 52d0d8bc |
} |
| 288057e9 |
sinfos = &infos->glob_infos[n - 1]; |
| 74f5816c |
if (!values) |
| 90c0acc7 |
size = 0; |
| 9cbece5c |
sinfos->base = values;
sinfos->size = size; |
| 74f5816c |
cli_dbgmsg("bytecode: registered ctx variable at %p (+%u) id %u\n", values, |
| 90c0acc7 |
size, n); |
| 9cbece5c |
return ptr_compose(n, 0);
}
|
| 52d0d8bc |
static inline int64_t ptr_register_glob(struct ptr_infos *infos, |
| 90c0acc7 |
void *values, uint32_t size) |
| 52d0d8bc |
{ |
| 9d39dc93 |
if (!values) |
| 90c0acc7 |
return 0; |
| 288057e9 |
return ptr_register_glob_fixedid(infos, values, size, infos->nglobs + 1); |
| 52d0d8bc |
}
|
| 288057e9 |
static inline void *ptr_torealptr(const struct ptr_infos *infos, int64_t ptr, |
| 90c0acc7 |
uint32_t read_size) |
| 9cbece5c |
{
struct ptr_info *info; |
| 288057e9 |
int32_t ptrid = ptr >> 32; |
| 9cbece5c |
uint32_t ptroff = (uint32_t)ptr; |
| a15fc904 |
TRACE_PTR(ptr, read_size); |
| 9cbece5c |
if (UNLIKELY(!ptrid)) { |
| 90c0acc7 |
(void)bcfail("nullptr", ptrid, 0, __FILE__, __LINE__);
return NULL; |
| 9cbece5c |
}
if (ptrid < 0) { |
| 288057e9 |
ptrid = -ptrid - 1; |
| cd94be7a |
if (UNLIKELY((const unsigned int)ptrid >= infos->nstacks)) { |
| 90c0acc7 |
(void)bcfail("ptr", ptrid, infos->nstacks, __FILE__, __LINE__);
return NULL;
}
info = &infos->stack_infos[ptrid]; |
| 9cbece5c |
} else { |
| 90c0acc7 |
ptrid--; |
| cd94be7a |
if (UNLIKELY((const unsigned int)ptrid >= infos->nglobs)) { |
| 90c0acc7 |
(void)bcfail("ptr", ptrid, infos->nglobs, __FILE__, __LINE__);
return NULL;
}
info = &infos->glob_infos[ptrid]; |
| 9cbece5c |
}
if (LIKELY(ptroff < info->size && |
| 288057e9 |
read_size <= info->size &&
ptroff + read_size <= info->size)) {
return info->base + ptroff; |
| 9cbece5c |
}
|
| e4a0f2c9 |
(void)bcfail("ptr1", ptroff, info->size, __FILE__, __LINE__);
(void)bcfail("ptr2", read_size, info->size, __FILE__, __LINE__); |
| 288057e9 |
(void)bcfail("ptr3", ptroff + read_size, info->size, __FILE__, __LINE__); |
| 9cbece5c |
return NULL;
}
|
| 82ca2ab4 |
static always_inline int check_sdivops(int64_t op0, int64_t op1)
{ |
| 288057e9 |
return op1 == 0 || (op1 == -1 && op0 == (-9223372036854775807LL - 1LL)); |
| 82ca2ab4 |
}
|
| 52d0d8bc |
static unsigned globaltypesize(uint16_t id)
{
const struct cli_bc_type *ty;
if (id <= 64) |
| 288057e9 |
return (id + 7) / 8; |
| 50829fbf |
if (id < 69) |
| 90c0acc7 |
return 8; /* ptr */ |
| 52d0d8bc |
ty = &cli_apicall_types[id - 69];
switch (ty->kind) { |
| 90c0acc7 |
case DArrayType: |
| 288057e9 |
return ty->numElements * globaltypesize(ty->containedTypes[0]); |
| 90c0acc7 |
case DStructType: |
| 288057e9 |
case DPackedStructType: {
unsigned i, s = 0;
for (i = 0; i < ty->numElements; i++)
s += globaltypesize(ty->containedTypes[i]);
return s;
} |
| 90c0acc7 |
default:
return 0; |
| 52d0d8bc |
}
}
|
| a15fc904 |
/* TODO: fix the APIs too */
static struct {
cli_apicall_pointer api;
uint32_t override_size;
} apisize_override[] = { |
| 288057e9 |
{(void *)cli_bcapi_disasm_x86, sizeof(struct DISASM_RESULT)},
{(void *)cli_bcapi_get_pe_section, sizeof(struct cli_exe_section)}, |
| a15fc904 |
};
|
| ec5cccc7 |
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) |
| e0c4fd85 |
{ |
| d18d7221 |
size_t i;
uint32_t j; |
| 288057e9 |
unsigned stack_depth = 0, bb_inst = 0, stop = 0, pc = 0; |
| e0c4fd85 |
struct cli_bc_func *func2; |
| cfec3d90 |
struct stack stack;
struct stack_entry *stack_entry = NULL; |
| 288057e9 |
struct cli_bc_bb *bb = NULL;
char *values = ctx->values; |
| 6922903a |
char *old_values; |
| 9cbece5c |
struct ptr_infos ptrinfos; |
| 74f5816c |
struct timeval tv0, tv1, timeout; |
| 4993d6cf |
int stackid = 0; |
| e0c4fd85 |
|
| 9cbece5c |
memset(&ptrinfos, 0, sizeof(ptrinfos)); |
| cfec3d90 |
memset(&stack, 0, sizeof(stack)); |
| 288057e9 |
for (i = 0; i < (size_t)cli_apicall_maxglobal - _FIRST_GLOBAL; i++) { |
| 90c0acc7 |
void *apiptr;
uint32_t size;
const struct cli_apiglobal *g = &cli_globals[i]; |
| 288057e9 |
void **apiglobal = (void **)(((char *)ctx) + g->offset); |
| 90c0acc7 |
if (!apiglobal)
continue;
apiptr = *apiglobal; |
| 288057e9 |
size = globaltypesize(g->type);
ptr_register_glob_fixedid(&ptrinfos, apiptr, size, g->globalid - _FIRST_GLOBAL + 1); |
| 52d0d8bc |
} |
| 74f5816c |
ptr_register_glob_fixedid(&ptrinfos, bc->globalBytes, bc->numGlobalBytes, |
| 90c0acc7 |
cli_apicall_maxglobal - _FIRST_GLOBAL + 2); |
| 74f5816c |
gettimeofday(&tv0, NULL); |
| 288057e9 |
timeout.tv_usec = tv0.tv_usec + ctx->bytecode_timeout * 1000;
timeout.tv_sec = tv0.tv_sec + timeout.tv_usec / 1000000; |
| 74f5816c |
timeout.tv_usec %= 1000000; |
| 52d0d8bc |
|
| e0c4fd85 |
do { |
| 90c0acc7 |
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;
} |
| 1aa8768d |
} |
| 92288e16 |
TRACE_INST(inst);
|
| 90c0acc7 |
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"); |
| 288057e9 |
res = op0 / op1); |
| 90c0acc7 |
DEFINE_BINOP(OP_BC_SDIV, CHECK_OP(check_sdivops(sop0, sop1), "bytecode attempted to execute sdiv#0\n"); |
| 288057e9 |
res = sop0 / sop1); |
| 90c0acc7 |
DEFINE_BINOP(OP_BC_UREM, CHECK_OP(op1 == 0, "bytecode attempted to execute urem#0\n"); |
| 288057e9 |
res = op0 % op1);
DEFINE_BINOP(OP_BC_SREM, CHECK_OP(check_sdivops(sop0, sop1), "bytecode attempted to execute urem#0\n");
res = sop0 % sop1); |
| 90c0acc7 |
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);
|
| 288057e9 |
// clang-format off |
| 90c0acc7 |
DEFINE_SCASTOP(OP_BC_SEXT, |
| ce2dcb53 |
CHOOSE(READ1(sres, inst->u.cast.source); res = sres ? ~0 : 0, |
| 90c0acc7 |
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))); |
| 288057e9 |
// clang-format on |
| 90c0acc7 |
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) |
| 288057e9 |
stop = jump(func, (values[inst->u.branch.condition] & 1) ? inst->u.branch.br_true : inst->u.branch.br_false,
&bb, &inst, &bb_inst);
continue; |
| 90c0acc7 |
DEFINE_OP(OP_BC_JMP) |
| 288057e9 |
stop = jump(func, inst->u.jump, &bb, &inst, &bb_inst);
continue; |
| 90c0acc7 |
|
| 288057e9 |
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); |
| 90c0acc7 |
|
| 288057e9 |
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)); |
| 90c0acc7 |
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));
|
| 288057e9 |
case OP_BC_SELECT * 5: { |
| 90c0acc7 |
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;
} |
| 288057e9 |
case OP_BC_SELECT * 5 + 1: { |
| 90c0acc7 |
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;
} |
| 288057e9 |
case OP_BC_SELECT * 5 + 2: { |
| 90c0acc7 |
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;
} |
| 288057e9 |
case OP_BC_SELECT * 5 + 3: { |
| 90c0acc7 |
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;
} |
| 288057e9 |
case OP_BC_SELECT * 5 + 4: { |
| 90c0acc7 |
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;
}
|
| 288057e9 |
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;
} |
| 90c0acc7 |
} |
| 288057e9 |
READPOP(arg1, inst->u.ops.ops[0], arg1size);
res32 = cli_apicalls1[api->idx](ctx, arg1, arg2);
WRITE32(inst->dest, res32);
break; |
| 90c0acc7 |
} |
| 288057e9 |
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; |
| 90c0acc7 |
} |
| 288057e9 |
break; |
| 90c0acc7 |
}
|
| 288057e9 |
DEFINE_OP(OP_BC_CALL_DIRECT) |
| 90c0acc7 |
CHECK_FUNCID(inst->u.ops.funcid);
func2 = &bc->funcs[inst->u.ops.funcid];
CHECK_EQ(func2->numArgs, inst->u.ops.numOps); |
| 288057e9 |
old_values = values; |
| 90c0acc7 |
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; |
| 288057e9 |
for (i = 0; i < func2->numArgs; i++) { |
| 90c0acc7 |
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]); |
| 288057e9 |
j = (j + 1) & ~1; |
| 90c0acc7 |
CHECK_GT(func2->numBytes, j); |
| 288057e9 |
*(uint16_t *)&values[j] = v; |
| 90c0acc7 |
j += 2;
break;
}
case 4: {
uint32_t v;
READOLD32(v, inst->u.ops.ops[i]); |
| 288057e9 |
j = (j + 3) & ~3; |
| 90c0acc7 |
CHECK_GT(func2->numBytes, j); |
| 288057e9 |
*(uint32_t *)&values[j] = v; |
| 90c0acc7 |
j += 4;
break;
}
case 8: {
uint64_t v;
READOLD64(v, inst->u.ops.ops[i]); |
| 288057e9 |
j = (j + 7) & ~7; |
| 90c0acc7 |
CHECK_GT(func2->numBytes, j); |
| 288057e9 |
*(uint64_t *)&values[j] = v; |
| 90c0acc7 |
j += 8;
break;
}
}
} |
| 288057e9 |
func = func2;
stackid = ptr_register_stack(&ptrinfos, values, 0, func->numBytes) >> 32; |
| 90c0acc7 |
CHECK_GT(func->numBB, 0);
stop = jump(func, 0, &bb, &inst, &bb_inst);
stack_depth++;
continue;
|
| 288057e9 |
case OP_BC_COPY * 5: { |
| 90c0acc7 |
uint8_t op;
READ1(op, BINOP(0));
WRITE8(BINOP(1), op);
break;
} |
| 288057e9 |
case OP_BC_COPY * 5 + 1: { |
| 90c0acc7 |
uint8_t op;
READ8(op, BINOP(0));
WRITE8(BINOP(1), op);
break;
} |
| 288057e9 |
case OP_BC_COPY * 5 + 2: { |
| 90c0acc7 |
uint16_t op;
READ16(op, BINOP(0));
WRITE16(BINOP(1), op);
break;
} |
| 288057e9 |
case OP_BC_COPY * 5 + 3: { |
| 90c0acc7 |
uint32_t op;
READ32(op, BINOP(0));
WRITE32(BINOP(1), op);
break;
} |
| 288057e9 |
case OP_BC_COPY * 5 + 4: { |
| 90c0acc7 |
uint64_t op;
READ64(op, BINOP(0));
WRITE64(BINOP(1), op);
break;
}
|
| 288057e9 |
case OP_BC_LOAD * 5:
case OP_BC_LOAD * 5 + 1: { |
| 90c0acc7 |
uint8_t *ptr;
READPOP(ptr, inst->u.unaryop, 1);
WRITE8(inst->dest, (*ptr));
break;
} |
| 288057e9 |
case OP_BC_LOAD * 5 + 2: { |
| 90c0acc7 |
const union unaligned_16 *ptr;
READPOP(ptr, inst->u.unaryop, 2);
WRITE16(inst->dest, (ptr->una_u16));
break;
} |
| 288057e9 |
case OP_BC_LOAD * 5 + 3: { |
| 90c0acc7 |
const union unaligned_32 *ptr;
READPOP(ptr, inst->u.unaryop, 4);
WRITE32(inst->dest, (ptr->una_u32));
break;
} |
| 288057e9 |
case OP_BC_LOAD * 5 + 4: { |
| 90c0acc7 |
const union unaligned_64 *ptr;
READPOP(ptr, inst->u.unaryop, 8);
WRITE64(inst->dest, (ptr->una_u64));
break;
}
|
| 288057e9 |
case OP_BC_STORE * 5: { |
| 90c0acc7 |
uint8_t *ptr;
uint8_t v;
READP(ptr, BINOP(1), 1);
READ1(v, BINOP(0));
*ptr = v;
break;
} |
| 288057e9 |
case OP_BC_STORE * 5 + 1: { |
| 90c0acc7 |
uint8_t *ptr;
uint8_t v;
READP(ptr, BINOP(1), 1);
READ8(v, BINOP(0));
*ptr = v;
break;
} |
| 288057e9 |
case OP_BC_STORE * 5 + 2: { |
| 90c0acc7 |
union unaligned_16 *ptr;
uint16_t v;
READP(ptr, BINOP(1), 2);
READ16(v, BINOP(0));
ptr->una_s16 = v;
break;
} |
| 288057e9 |
case OP_BC_STORE * 5 + 3: { |
| 90c0acc7 |
union unaligned_32 *ptr;
uint32_t v;
READP(ptr, BINOP(1), 4);
READ32(v, BINOP(0));
ptr->una_u32 = v;
break;
} |
| 288057e9 |
case OP_BC_STORE * 5 + 4: { |
| 90c0acc7 |
union unaligned_64 *ptr;
uint64_t v;
READP(ptr, BINOP(1), 8);
READ64(v, BINOP(0));
ptr->una_u64 = v;
break;
} |
| 288057e9 |
DEFINE_OP(OP_BC_ISBIGENDIAN)
{
WRITE8(inst->dest, WORDS_BIGENDIAN);
break; |
| 90c0acc7 |
} |
| 288057e9 |
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);
} |
| 90c0acc7 |
|
| 288057e9 |
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; |
| 90c0acc7 |
} |
| 288057e9 |
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; |
| 90c0acc7 |
} |
| 288057e9 |
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);
} |
| 90c0acc7 |
|
| 288057e9 |
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; |
| 90c0acc7 |
}
/* TODO: implement OP_BC_GEP1, OP_BC_GEP2, OP_BC_GEPN */
default:
cli_errmsg("Opcode %u of type %u is not implemented yet!\n", |
| 288057e9 |
inst->interp_op / 5, inst->interp_op % 5); |
| 90c0acc7 |
stop = CL_EARG;
continue; |
| 1aa8768d |
} |
| 90c0acc7 |
bb_inst++;
inst++;
if (bb) {
CHECK_GT(bb->numInsts, bb_inst); |
| 1aa8768d |
} |
| e0c4fd85 |
} while (stop == CL_SUCCESS); |
| 74f5816c |
if (cli_debug_flag) { |
| 90c0acc7 |
gettimeofday(&tv1, NULL);
tv1.tv_sec -= tv0.tv_sec;
tv1.tv_usec -= tv0.tv_usec; |
| 7cd9337a |
cli_dbgmsg("interpreter bytecode run finished in %luus, after executing %u opcodes\n", |
| 288057e9 |
tv1.tv_sec * 1000000 + tv1.tv_usec, pc); |
| 74f5816c |
} |
| 1c00d0ac |
if (stop == CL_EBYTECODE) { |
| 90c0acc7 |
cli_event_error_str(ctx->bc_events, "interpreter finished with error\n"); |
| 7cd9337a |
cli_dbgmsg("interpreter finished with error\n"); |
| 1c00d0ac |
} |
| e0c4fd85 |
|
| cfec3d90 |
cli_stack_destroy(&stack); |
| 48fc8b98 |
free(ptrinfos.stack_infos);
free(ptrinfos.glob_infos); |
| e0c4fd85 |
return stop == CL_BREAK ? CL_SUCCESS : stop;
} |