}
static
-int reg_strcmp(struct reg reg[NR_REG], const char *cmp_type)
+int stack_strcmp(struct estack *stack, int top, const char *cmp_type)
{
- const char *p = reg[REG_R0].str, *q = reg[REG_R1].str;
+ const char *p = estack_bx(stack, top)->u.s.str, *q = estack_ax(stack, top)->u.s.str;
int ret;
int diff;
for (;;) {
int escaped_r0 = 0;
- if (unlikely(p - reg[REG_R0].str > reg[REG_R0].seq_len || *p == '\0')) {
- if (q - reg[REG_R1].str > reg[REG_R1].seq_len || *q == '\0')
- diff = 0;
- else
- diff = -1;
- break;
+ if (unlikely(p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0')) {
+ if (q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0') {
+ return 0;
+ } else {
+ if (estack_ax(stack, top)->u.s.literal) {
+ ret = parse_char(&q);
+ if (ret == -1)
+ return 0;
+ }
+ return -1;
+ }
}
- if (unlikely(q - reg[REG_R1].str > reg[REG_R1].seq_len || *q == '\0')) {
- if (p - reg[REG_R0].str > reg[REG_R0].seq_len || *p == '\0')
- diff = 0;
- else
- diff = 1;
- break;
+ if (unlikely(q - estack_ax(stack, top)->u.s.str > estack_ax(stack, top)->u.s.seq_len || *q == '\0')) {
+ if (p - estack_bx(stack, top)->u.s.str > estack_bx(stack, top)->u.s.seq_len || *p == '\0') {
+ return 0;
+ } else {
+ if (estack_bx(stack, top)->u.s.literal) {
+ ret = parse_char(&p);
+ if (ret == -1)
+ return 0;
+ }
+ return 1;
+ }
}
- if (reg[REG_R0].literal) {
+ if (estack_bx(stack, top)->u.s.literal) {
ret = parse_char(&p);
if (ret == -1) {
return 0;
}
/* else compare both char */
}
- if (reg[REG_R1].literal) {
+ if (estack_ax(stack, top)->u.s.literal) {
ret = parse_char(&q);
if (ret == -1) {
return 0;
return diff;
}
-int lttng_filter_false(void *filter_data,
+uint64_t lttng_filter_false(void *filter_data,
const char *filter_stack_data)
{
return 0;
#endif
-int lttng_filter_interpret_bytecode(void *filter_data,
+/*
+ * Return 0 (discard), or raise the 0x1 flag (log event).
+ * Currently, other flags are kept for future extensions and have no
+ * effect.
+ */
+uint64_t lttng_filter_interpret_bytecode(void *filter_data,
const char *filter_stack_data)
{
struct bytecode_runtime *bytecode = filter_data;
void *pc, *next_pc, *start_pc;
int ret = -EINVAL;
- int retval = 0;
- struct reg reg[NR_REG];
+ uint64_t retval = 0;
+ struct estack _stack;
+ struct estack *stack = &_stack;
+ register int64_t ax = 0, bx = 0;
+ register int top = FILTER_STACK_EMPTY;
#ifndef INTERPRETER_USE_SWITCH
static void *dispatch[NR_FILTER_OPS] = {
[ FILTER_OP_UNKNOWN ] = &&LABEL_FILTER_OP_UNKNOWN,
[ FILTER_OP_GE_DOUBLE ] = &&LABEL_FILTER_OP_GE_DOUBLE,
[ FILTER_OP_LE_DOUBLE ] = &&LABEL_FILTER_OP_LE_DOUBLE,
+ /* Mixed S64-double binary comparators */
+ [ FILTER_OP_EQ_DOUBLE_S64 ] = &&LABEL_FILTER_OP_EQ_DOUBLE_S64,
+ [ FILTER_OP_NE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_NE_DOUBLE_S64,
+ [ FILTER_OP_GT_DOUBLE_S64 ] = &&LABEL_FILTER_OP_GT_DOUBLE_S64,
+ [ FILTER_OP_LT_DOUBLE_S64 ] = &&LABEL_FILTER_OP_LT_DOUBLE_S64,
+ [ FILTER_OP_GE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_GE_DOUBLE_S64,
+ [ FILTER_OP_LE_DOUBLE_S64 ] = &&LABEL_FILTER_OP_LE_DOUBLE_S64,
+
+ [ FILTER_OP_EQ_S64_DOUBLE ] = &&LABEL_FILTER_OP_EQ_S64_DOUBLE,
+ [ FILTER_OP_NE_S64_DOUBLE ] = &&LABEL_FILTER_OP_NE_S64_DOUBLE,
+ [ FILTER_OP_GT_S64_DOUBLE ] = &&LABEL_FILTER_OP_GT_S64_DOUBLE,
+ [ FILTER_OP_LT_S64_DOUBLE ] = &&LABEL_FILTER_OP_LT_S64_DOUBLE,
+ [ FILTER_OP_GE_S64_DOUBLE ] = &&LABEL_FILTER_OP_GE_S64_DOUBLE,
+ [ FILTER_OP_LE_S64_DOUBLE ] = &&LABEL_FILTER_OP_LE_S64_DOUBLE,
+
/* unary */
[ FILTER_OP_UNARY_PLUS ] = &&LABEL_FILTER_OP_UNARY_PLUS,
[ FILTER_OP_UNARY_MINUS ] = &&LABEL_FILTER_OP_UNARY_MINUS,
[ FILTER_OP_AND ] = &&LABEL_FILTER_OP_AND,
[ FILTER_OP_OR ] = &&LABEL_FILTER_OP_OR,
- /* load */
+ /* load field ref */
[ FILTER_OP_LOAD_FIELD_REF ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF,
[ FILTER_OP_LOAD_FIELD_REF_STRING ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_STRING,
[ FILTER_OP_LOAD_FIELD_REF_SEQUENCE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_SEQUENCE,
[ FILTER_OP_LOAD_FIELD_REF_S64 ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_S64,
[ FILTER_OP_LOAD_FIELD_REF_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_FIELD_REF_DOUBLE,
+ /* load from immediate operand */
[ FILTER_OP_LOAD_STRING ] = &&LABEL_FILTER_OP_LOAD_STRING,
[ FILTER_OP_LOAD_S64 ] = &&LABEL_FILTER_OP_LOAD_S64,
[ FILTER_OP_LOAD_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_DOUBLE,
[ FILTER_OP_CAST_TO_S64 ] = &&LABEL_FILTER_OP_CAST_TO_S64,
[ FILTER_OP_CAST_DOUBLE_TO_S64 ] = &&LABEL_FILTER_OP_CAST_DOUBLE_TO_S64,
[ FILTER_OP_CAST_NOP ] = &&LABEL_FILTER_OP_CAST_NOP,
+
+ /* get context ref */
+ [ FILTER_OP_GET_CONTEXT_REF ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF,
+ [ FILTER_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_STRING,
+ [ FILTER_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_S64,
+ [ FILTER_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_DOUBLE,
};
#endif /* #ifndef INTERPRETER_USE_SWITCH */
OP(FILTER_OP_UNKNOWN):
OP(FILTER_OP_LOAD_FIELD_REF):
+ OP(FILTER_OP_GET_CONTEXT_REF):
#ifdef INTERPRETER_USE_SWITCH
default:
#endif /* INTERPRETER_USE_SWITCH */
goto end;
OP(FILTER_OP_RETURN):
- retval = !!reg[0].v;
+ /* LTTNG_FILTER_DISCARD or LTTNG_FILTER_RECORD_FLAG */
+ retval = !!estack_ax_v;
ret = 0;
goto end;
OP(FILTER_OP_EQ_STRING):
{
- reg[REG_R0].v = (reg_strcmp(reg, "==") == 0);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (stack_strcmp(stack, top, "==") == 0);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_NE_STRING):
{
- reg[REG_R0].v = (reg_strcmp(reg, "!=") != 0);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (stack_strcmp(stack, top, "!=") != 0);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_GT_STRING):
{
- reg[REG_R0].v = (reg_strcmp(reg, ">") > 0);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (stack_strcmp(stack, top, ">") > 0);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_LT_STRING):
{
- reg[REG_R0].v = (reg_strcmp(reg, "<") < 0);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (stack_strcmp(stack, top, "<") < 0);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_GE_STRING):
{
- reg[REG_R0].v = (reg_strcmp(reg, ">=") >= 0);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (stack_strcmp(stack, top, ">=") >= 0);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_LE_STRING):
{
- reg[REG_R0].v = (reg_strcmp(reg, "<=") <= 0);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (stack_strcmp(stack, top, "<=") <= 0);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_EQ_S64):
{
- reg[REG_R0].v = (reg[REG_R0].v == reg[REG_R1].v);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx_v == estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_NE_S64):
{
- reg[REG_R0].v = (reg[REG_R0].v != reg[REG_R1].v);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx_v != estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_GT_S64):
{
- reg[REG_R0].v = (reg[REG_R0].v > reg[REG_R1].v);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx_v > estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_LT_S64):
{
- reg[REG_R0].v = (reg[REG_R0].v < reg[REG_R1].v);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx_v < estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_GE_S64):
{
- reg[REG_R0].v = (reg[REG_R0].v >= reg[REG_R1].v);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx_v >= estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_LE_S64):
{
- reg[REG_R0].v = (reg[REG_R0].v <= reg[REG_R1].v);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx_v <= estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_EQ_DOUBLE):
{
- if (unlikely(reg[REG_R0].type == REG_S64))
- reg[REG_R0].d = (double) reg[REG_R0].v;
- else if (unlikely(reg[REG_R1].type == REG_S64))
- reg[REG_R1].d = (double) reg[REG_R1].v;
- reg[REG_R0].v = (reg[REG_R0].d == reg[REG_R1].d);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx(stack, top)->u.d == estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_NE_DOUBLE):
{
- if (unlikely(reg[REG_R0].type == REG_S64))
- reg[REG_R0].d = (double) reg[REG_R0].v;
- else if (unlikely(reg[REG_R1].type == REG_S64))
- reg[REG_R1].d = (double) reg[REG_R1].v;
- reg[REG_R0].v = (reg[REG_R0].d != reg[REG_R1].d);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx(stack, top)->u.d != estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_GT_DOUBLE):
{
- if (unlikely(reg[REG_R0].type == REG_S64))
- reg[REG_R0].d = (double) reg[REG_R0].v;
- else if (unlikely(reg[REG_R1].type == REG_S64))
- reg[REG_R1].d = (double) reg[REG_R1].v;
- reg[REG_R0].v = (reg[REG_R0].d > reg[REG_R1].d);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx(stack, top)->u.d > estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_LT_DOUBLE):
{
- if (unlikely(reg[REG_R0].type == REG_S64))
- reg[REG_R0].d = (double) reg[REG_R0].v;
- else if (unlikely(reg[REG_R1].type == REG_S64))
- reg[REG_R1].d = (double) reg[REG_R1].v;
- reg[REG_R0].v = (reg[REG_R0].d < reg[REG_R1].d);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx(stack, top)->u.d < estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_GE_DOUBLE):
{
- if (unlikely(reg[REG_R0].type == REG_S64))
- reg[REG_R0].d = (double) reg[REG_R0].v;
- else if (unlikely(reg[REG_R1].type == REG_S64))
- reg[REG_R1].d = (double) reg[REG_R1].v;
- reg[REG_R0].v = (reg[REG_R0].d >= reg[REG_R1].d);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx(stack, top)->u.d >= estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
OP(FILTER_OP_LE_DOUBLE):
{
- if (unlikely(reg[REG_R0].type == REG_S64))
- reg[REG_R0].d = (double) reg[REG_R0].v;
- else if (unlikely(reg[REG_R1].type == REG_S64))
- reg[REG_R1].d = (double) reg[REG_R1].v;
- reg[REG_R0].v = (reg[REG_R0].d <= reg[REG_R1].d);
- reg[REG_R0].type = REG_S64;
+ int res;
+
+ res = (estack_bx(stack, top)->u.d <= estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+
+ /* Mixed S64-double binary comparators */
+ OP(FILTER_OP_EQ_DOUBLE_S64):
+ {
+ int res;
+
+ res = (estack_bx(stack, top)->u.d == estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_NE_DOUBLE_S64):
+ {
+ int res;
+
+ res = (estack_bx(stack, top)->u.d != estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_GT_DOUBLE_S64):
+ {
+ int res;
+
+ res = (estack_bx(stack, top)->u.d > estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_LT_DOUBLE_S64):
+ {
+ int res;
+
+ res = (estack_bx(stack, top)->u.d < estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_GE_DOUBLE_S64):
+ {
+ int res;
+
+ res = (estack_bx(stack, top)->u.d >= estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_LE_DOUBLE_S64):
+ {
+ int res;
+
+ res = (estack_bx(stack, top)->u.d <= estack_ax_v);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+
+ OP(FILTER_OP_EQ_S64_DOUBLE):
+ {
+ int res;
+
+ res = (estack_bx_v == estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_NE_S64_DOUBLE):
+ {
+ int res;
+
+ res = (estack_bx_v != estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_GT_S64_DOUBLE):
+ {
+ int res;
+
+ res = (estack_bx_v > estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_LT_S64_DOUBLE):
+ {
+ int res;
+
+ res = (estack_bx_v < estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_GE_S64_DOUBLE):
+ {
+ int res;
+
+ res = (estack_bx_v >= estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_LE_S64_DOUBLE):
+ {
+ int res;
+
+ res = (estack_bx_v <= estack_ax(stack, top)->u.d);
+ estack_pop(stack, top, ax, bx);
+ estack_ax_v = res;
next_pc += sizeof(struct binary_op);
PO;
}
}
OP(FILTER_OP_UNARY_MINUS_S64):
{
- struct unary_op *insn = (struct unary_op *) pc;
-
- reg[insn->reg].v = -reg[insn->reg].v;
+ estack_ax_v = -estack_ax_v;
next_pc += sizeof(struct unary_op);
PO;
}
OP(FILTER_OP_UNARY_MINUS_DOUBLE):
{
- struct unary_op *insn = (struct unary_op *) pc;
-
- reg[insn->reg].d = -reg[insn->reg].d;
+ estack_ax(stack, top)->u.d = -estack_ax(stack, top)->u.d;
next_pc += sizeof(struct unary_op);
PO;
}
OP(FILTER_OP_UNARY_NOT_S64):
{
- struct unary_op *insn = (struct unary_op *) pc;
-
- reg[insn->reg].v = !reg[insn->reg].v;
+ estack_ax_v = !estack_ax_v;
next_pc += sizeof(struct unary_op);
PO;
}
OP(FILTER_OP_UNARY_NOT_DOUBLE):
{
- struct unary_op *insn = (struct unary_op *) pc;
-
- reg[insn->reg].d = !reg[insn->reg].d;
+ estack_ax(stack, top)->u.d = !estack_ax(stack, top)->u.d;
next_pc += sizeof(struct unary_op);
PO;
}
{
struct logical_op *insn = (struct logical_op *) pc;
- /* If REG_R0 is 0, skip and evaluate to 0 */
- if (unlikely(reg[REG_R0].v == 0)) {
+ /* If AX is 0, skip and evaluate to 0 */
+ if (unlikely(estack_ax_v == 0)) {
dbg_printf("Jumping to bytecode offset %u\n",
(unsigned int) insn->skip_offset);
next_pc = start_pc + insn->skip_offset;
} else {
+ /* Pop 1 when jump not taken */
+ estack_pop(stack, top, ax, bx);
next_pc += sizeof(struct logical_op);
}
PO;
{
struct logical_op *insn = (struct logical_op *) pc;
- /* If REG_R0 is nonzero, skip and evaluate to 1 */
+ /* If AX is nonzero, skip and evaluate to 1 */
- if (unlikely(reg[REG_R0].v != 0)) {
- reg[REG_R0].v = 1;
+ if (unlikely(estack_ax_v != 0)) {
+ estack_ax_v = 1;
dbg_printf("Jumping to bytecode offset %u\n",
(unsigned int) insn->skip_offset);
next_pc = start_pc + insn->skip_offset;
} else {
+ /* Pop 1 when jump not taken */
+ estack_pop(stack, top, ax, bx);
next_pc += sizeof(struct logical_op);
}
PO;
}
- /* load */
+ /* load field ref */
OP(FILTER_OP_LOAD_FIELD_REF_STRING):
{
struct load_op *insn = (struct load_op *) pc;
dbg_printf("load field ref offset %u type string\n",
ref->offset);
- reg[insn->reg].str =
+ estack_push(stack, top, ax, bx);
+ estack_ax(stack, top)->u.s.str =
*(const char * const *) &filter_stack_data[ref->offset];
- if (unlikely(!reg[insn->reg].str)) {
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
dbg_printf("Filter warning: loading a NULL string.\n");
ret = -EINVAL;
goto end;
}
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].seq_len = UINT_MAX;
- reg[insn->reg].literal = 0;
- dbg_printf("ref load string %s\n", reg[insn->reg].str);
+ estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
+ estack_ax(stack, top)->u.s.literal = 0;
+ dbg_printf("ref load string %s\n", estack_ax(stack, top)->u.s.str);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
dbg_printf("load field ref offset %u type sequence\n",
ref->offset);
- reg[insn->reg].seq_len =
+ estack_push(stack, top, ax, bx);
+ estack_ax(stack, top)->u.s.seq_len =
*(unsigned long *) &filter_stack_data[ref->offset];
- reg[insn->reg].str =
+ estack_ax(stack, top)->u.s.str =
*(const char **) (&filter_stack_data[ref->offset
+ sizeof(unsigned long)]);
- if (unlikely(!reg[insn->reg].str)) {
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
dbg_printf("Filter warning: loading a NULL sequence.\n");
ret = -EINVAL;
goto end;
}
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].literal = 0;
+ estack_ax(stack, top)->u.s.literal = 0;
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
dbg_printf("load field ref offset %u type s64\n",
ref->offset);
- memcpy(®[insn->reg].v, &filter_stack_data[ref->offset],
- sizeof(struct literal_numeric));
- reg[insn->reg].type = REG_S64;
- dbg_printf("ref load s64 %" PRIi64 "\n", reg[insn->reg].v);
+ estack_push(stack, top, ax, bx);
+ estack_ax_v =
+ ((struct literal_numeric *) &filter_stack_data[ref->offset])->v;
+ dbg_printf("ref load s64 %" PRIi64 "\n", estack_ax_v);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
dbg_printf("load field ref offset %u type double\n",
ref->offset);
- memcpy(®[insn->reg].d, &filter_stack_data[ref->offset],
+ estack_push(stack, top, ax, bx);
+ memcpy(&estack_ax(stack, top)->u.d, &filter_stack_data[ref->offset],
sizeof(struct literal_double));
- reg[insn->reg].type = REG_DOUBLE;
- dbg_printf("ref load double %g\n", reg[insn->reg].d);
+ dbg_printf("ref load double %g\n", estack_ax(stack, top)->u.d);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
+ /* load from immediate operand */
OP(FILTER_OP_LOAD_STRING):
{
struct load_op *insn = (struct load_op *) pc;
dbg_printf("load string %s\n", insn->data);
- reg[insn->reg].str = insn->data;
- reg[insn->reg].type = REG_STRING;
- reg[insn->reg].seq_len = UINT_MAX;
- reg[insn->reg].literal = 1;
+ estack_push(stack, top, ax, bx);
+ estack_ax(stack, top)->u.s.str = insn->data;
+ estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
+ estack_ax(stack, top)->u.s.literal = 1;
next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
PO;
}
{
struct load_op *insn = (struct load_op *) pc;
- memcpy(®[insn->reg].v, insn->data,
- sizeof(struct literal_numeric));
- dbg_printf("load s64 %" PRIi64 "\n", reg[insn->reg].v);
- reg[insn->reg].type = REG_S64;
+ estack_push(stack, top, ax, bx);
+ estack_ax_v = ((struct literal_numeric *) insn->data)->v;
+ dbg_printf("load s64 %" PRIi64 "\n", estack_ax_v);
next_pc += sizeof(struct load_op)
+ sizeof(struct literal_numeric);
PO;
{
struct load_op *insn = (struct load_op *) pc;
- memcpy(®[insn->reg].d, insn->data,
+ estack_push(stack, top, ax, bx);
+ memcpy(&estack_ax(stack, top)->u.d, insn->data,
sizeof(struct literal_double));
- dbg_printf("load s64 %g\n", reg[insn->reg].d);
- reg[insn->reg].type = REG_DOUBLE;
+ dbg_printf("load s64 %g\n", estack_ax(stack, top)->u.d);
next_pc += sizeof(struct load_op)
+ sizeof(struct literal_double);
PO;
OP(FILTER_OP_CAST_DOUBLE_TO_S64):
{
- struct cast_op *insn = (struct cast_op *) pc;
-
- reg[insn->reg].v = (int64_t) reg[insn->reg].d;
- reg[insn->reg].type = REG_S64;
+ estack_ax_v = (int64_t) estack_ax(stack, top)->u.d;
next_pc += sizeof(struct cast_op);
PO;
}
PO;
}
+ /* get context ref */
+ OP(FILTER_OP_GET_CONTEXT_REF_STRING):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx_field *ctx_field;
+ union lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type string\n",
+ ref->offset);
+ ctx_field = <tng_static_ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx);
+ estack_ax(stack, top)->u.s.str = v.str;
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL string.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
+ estack_ax(stack, top)->u.s.literal = 0;
+ dbg_printf("ref get context string %s\n", estack_ax(stack, top)->u.s.str);
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_CONTEXT_REF_S64):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx_field *ctx_field;
+ union lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type s64\n",
+ ref->offset);
+ ctx_field = <tng_static_ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx);
+ estack_ax_v = v.s64;
+ dbg_printf("ref get context s64 %" PRIi64 "\n", estack_ax_v);
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_CONTEXT_REF_DOUBLE):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct field_ref *ref = (struct field_ref *) insn->data;
+ struct lttng_ctx_field *ctx_field;
+ union lttng_ctx_value v;
+
+ dbg_printf("get context ref offset %u type double\n",
+ ref->offset);
+ ctx_field = <tng_static_ctx->fields[ref->offset];
+ ctx_field->get_value(ctx_field, &v);
+ estack_push(stack, top, ax, bx);
+ memcpy(&estack_ax(stack, top)->u.d, &v.d, sizeof(struct literal_double));
+ dbg_printf("ref get context double %g\n", estack_ax(stack, top)->u.d);
+ next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
+ PO;
+ }
+
END_OP
end:
/* return 0 (discard) on error */
projects / lttng-ust.git / blobdiff