move pst_call_site & pst_parameter to C language and separate them
This commit is contained in:
@@ -34,687 +34,6 @@
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// dwarf_getattrs() allows to enumerate all DIE attributes
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// dwarf_getfuncs() allows to enumerate functions within CU
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typedef struct __reginfo {
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__reginfo() {
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regname[0] = 0;
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regno = -1;
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}
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char regname[32];
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int regno;
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} reginfo;
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int regname_callback (void *arg, int regno, const char *setname, const char *prefix, const char *regname, int bits, int type)
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{
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reginfo* info = (reginfo*)arg;
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if(info->regno == regno) {
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snprintf(info->regname, sizeof(info->regname), "%s %s%s", setname, prefix, regname);
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}
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return 0;
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}
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bool handle_location(pst_context* ctx, Dwarf_Attribute* attr, pst_dwarf_expr* loc, Dwarf_Addr pc, __pst_function* fun = NULL)
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{
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ctx->clean_print(ctx);
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Dwarf_Addr offset = pc - ctx->base_addr;
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pst_decl(pst_dwarf_stack, stack, ctx);
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Dwarf_Op *expr;
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size_t exprlen;
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bool ret = false;
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if(dwarf_hasform(attr, DW_FORM_exprloc)) {
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// Location expression (exprloc class of location in DWARF terms)
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if(dwarf_getlocation(attr, &expr, &exprlen) == 0) {
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loc->setup(expr, exprlen);
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ctx->print_expr(ctx, expr, exprlen, attr);
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ret = stack.calc(&stack, expr, exprlen, attr, fun);
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}
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} else if(dwarf_hasform(attr, DW_FORM_sec_offset)) {
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// Location list (loclist class of location in DWARF terms)
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Dwarf_Addr base, start, end;
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ptrdiff_t off = 0;
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// handle list of possible locations of parameter
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for(int i = 0; (off = dwarf_getlocations (attr, off, &base, &start, &end, &expr, &exprlen)) > 0; ++i) {
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ctx->print_expr(ctx, expr, exprlen, attr);
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if(offset >= start && offset <= end) {
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loc->setup(expr, exprlen);
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// actual location, try to calculate Location expression
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ret = stack.calc(&stack, expr, exprlen, attr, fun);
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} else {
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// Location skipped due to don't match current PC offset
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ctx->log(SEVERITY_DEBUG, "Skip Location list expression: [%d] (low_offset: 0x%" PRIx64 ", high_offset: 0x%" PRIx64 "), \"%s\"", i, start, end, ctx->buff);
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}
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}
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} else {
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ctx->log(SEVERITY_WARNING, "Unknown location attribute form = 0x%X, code = 0x%X, ", attr->form, attr->code);
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}
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pst_dwarf_stack_fini(&stack);
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return ret;
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}
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void __pst_call_site_param::set_location(Dwarf_Op* expr, size_t exprlen)
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{
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location.setup(expr, exprlen);
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}
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pst_call_site_param* __pst_call_site::add_param()
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{
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pst_call_site_param* p = new pst_call_site_param(ctx);
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params.InsertLast(p);
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return p;
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}
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void __pst_call_site::del_param(pst_call_site_param* p)
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{
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params.Remove(p);
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delete p;
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}
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pst_call_site_param* __pst_call_site::next_param(pst_call_site_param* p)
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{
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pst_call_site_param* param = NULL;
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if(p == NULL) {
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param = (pst_call_site_param*)params.First();
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} else {
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param = (pst_call_site_param*)params.Next(p);
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}
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return param;
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}
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pst_call_site_param* __pst_call_site::find_param(pst_dwarf_expr& expr)
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{
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for(pst_call_site_param* param = next_param(NULL); param; param = next_param(param)) {
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if(param->location == expr) {
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return param;
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}
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}
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return NULL;
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}
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bool __pst_call_site::handle_dwarf(Dwarf_Die* child)
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{
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Dwarf_Attribute attr_mem;
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Dwarf_Attribute* attr;
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do {
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switch(dwarf_tag(child))
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{
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case DW_TAG_GNU_call_site_parameter: {
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Dwarf_Addr pc;
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unw_get_reg(ctx->curr_frame, UNW_REG_IP, &pc);
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// expression represent where callee parameter will be stored
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pst_call_site_param* param = add_param();
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if(dwarf_hasattr(child, DW_AT_location)) {
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// handle location expression here
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// determine location of parameter in stack/heap or CPU registers
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attr = dwarf_attr(child, DW_AT_location, &attr_mem);
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if(!handle_location(ctx, attr, param->location, pc, NULL)) {
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ctx->log(SEVERITY_ERROR, "Failed to calculate DW_AT_location expression: %s", ctx->buff);
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del_param(param);
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return false;
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}
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}
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// expression represents call parameter's value
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if(dwarf_hasattr(child, DW_AT_GNU_call_site_value)) {
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// handle value expression here
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attr = dwarf_attr(child, DW_AT_GNU_call_site_value, &attr_mem);
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pst_dwarf_expr loc(ctx->alloc);
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if(handle_location(ctx, attr, loc, pc, NULL)) {
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param->value = loc.value;
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ctx->log(SEVERITY_DEBUG, "\tDW_AT_GNU_call_site_value:\"%s\" ==> 0x%lX", ctx->buff, param->value);
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} else {
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ctx->log(SEVERITY_ERROR, "Failed to calculate DW_AT_location expression: %s", ctx->buff);
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del_param(param);
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return false;
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}
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}
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break;
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}
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default:
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break;
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}
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} while (dwarf_siblingof (child, child) == 0);
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return true;
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}
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pst_parameter* __pst_function::add_param()
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{
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pst_parameter* p = new pst_parameter(ctx);
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params.InsertLast(p);
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return p;
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}
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void __pst_function::del_param(pst_parameter* p)
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{
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params.Remove(p);
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delete p;
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}
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void __pst_function::clear()
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{
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for(pst_parameter* p = (pst_parameter*)params.First(); p; p = (pst_parameter*)params.First()) {
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params.Remove(p);
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delete p;
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}
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for(pst_call_site* p = (pst_call_site*)call_sites.First(); p; p = (pst_call_site*)call_sites.First()) {
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call_sites.Remove(p);
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delete p;
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}
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mCallStToTarget.Clean();
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mCallStToTarget.Clean();
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}
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pst_parameter* __pst_function::next_param(pst_parameter* p)
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{
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pst_parameter* next = NULL;
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if(!p) {
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next = (pst_parameter*)params.First();
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} else {
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next = (pst_parameter*)params.Next(p);
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}
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return next;
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}
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pst_call_site* __pst_function::add_call_site(uint64_t target, const char* origin)
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{
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pst_call_site* st = new pst_call_site(ctx, target, origin);
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call_sites.InsertLast(st);
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if(target) {
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mCallStToTarget.Insert(&target, sizeof(target), st);
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}
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if(origin) {
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mCallStToOrigin.Insert(origin, strlen(origin), st);
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}
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return st;
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}
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void __pst_function::del_call_site(pst_call_site* st)
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{
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call_sites.Remove(st);
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if(st->target && mCallStToTarget.Lookup(&st->target, sizeof(st->target))) {
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mCallStToTarget.Remove();
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}
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if(st->origin && mCallStToTarget.Lookup(st->origin, strlen(st->origin))) {
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mCallStToTarget.Remove();
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}
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delete st;
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}
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pst_call_site* __pst_function::next_call_site(pst_call_site* st)
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{
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pst_call_site* next = NULL;
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if(st) {
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next = (pst_call_site*)call_sites.First();
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} else {
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next = (pst_call_site*)call_sites.Next(st);
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}
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return next;
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}
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pst_call_site* __pst_function::call_site_by_origin(const char* origin)
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{
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return (pst_call_site*)mCallStToOrigin.Lookup(origin, strlen(origin));
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}
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pst_call_site* __pst_function::call_site_by_target(uint64_t target)
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{
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return (pst_call_site*)mCallStToTarget.Lookup(&target, sizeof(target));
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}
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pst_call_site* __pst_function::find_call_site(pst_function* callee)
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{
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uint64_t start_pc = ctx->base_addr + callee->lowpc;
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pst_call_site* cs = (pst_call_site*)mCallStToTarget.Lookup(&start_pc, sizeof(start_pc));
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if(!cs) {
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cs = (pst_call_site*)mCallStToOrigin.Lookup(callee->name.c_str(), strlen(callee->name.c_str()));
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}
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return cs;
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}
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bool __pst_function::print_dwarf()
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{
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char* at = NULL;
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if(!asprintf(&at, " at %s:%d, %p", file.c_str(), line, (void*)pc)) {
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return false;
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}
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if(at[4] == ':' && at[5] == '-') {
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free(at);
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if(!asprintf(&at, " at %p", (void*)pc)) {
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return false;
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}
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}
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//ctx->print(ctx, "%s:%d: ", file.c_str(), line);
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// handle return parameter and be safe if function haven't parameters (for example, dwar info for function is absent)
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pst_parameter* param = next_param(NULL);
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if(param && param->is_return) {
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// print return value type, function name and start list of parameters
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param->print_dwarf();
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ctx->print(ctx, " %s(", name.c_str());
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param = next_param(param);
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} else {
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ctx->print(ctx, "%s(", name.c_str());
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}
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bool first = true; bool start_variable = false;
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for(; param; param = next_param(param)) {
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if(param->is_return) {
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// print return value type, function name and start list of parameters
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param->print_dwarf();
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ctx->print(ctx, " %s(", name.c_str());
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continue;
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}
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if(param->is_variable) {
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if(!start_variable) {
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ctx->print(ctx, ")%s\n", at);
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ctx->print(ctx, "{\n");
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start_variable = true;
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}
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if(param->line) {
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ctx->print(ctx, "%04u: ", param->line);
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} else {
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ctx->print(ctx, " ");
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}
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param->print_dwarf();
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ctx->print(ctx, ";\n");
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} else {
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if(first) {
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first = false;
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} else {
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ctx->print(ctx, ", ");
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}
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param->print_dwarf();
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}
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}
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if(!start_variable) {
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ctx->print(ctx, ");%s\n", at);
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} else {
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ctx->print(ctx, "}\n");
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}
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free(at);
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return true;
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}
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bool __pst_function::handle_lexical_block(Dwarf_Die* result)
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{
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uint64_t lowpc = 0, highpc = 0; const char* origin_name = "";
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dwarf_lowpc(result, &lowpc);
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dwarf_highpc(result, &lowpc);
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Dwarf_Attribute attr_mem;
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Dwarf_Die origin;
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if(dwarf_hasattr (result, DW_AT_abstract_origin) && dwarf_formref_die (dwarf_attr (result, DW_AT_abstract_origin, &attr_mem), &origin) != NULL) {
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origin_name = dwarf_diename(&origin);
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Dwarf_Die child;
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if(dwarf_child (&origin, &child) == 0) {
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do {
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switch (dwarf_tag (&child))
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{
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case DW_TAG_variable:
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case DW_TAG_formal_parameter:
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ctx->log(SEVERITY_DEBUG, "Abstract origin: %s('%s')", dwarf_diename(&origin), dwarf_diename (&child));
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break;
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// Also handle DW_TAG_unspecified_parameters (unknown number of arguments i.e. fun(arg1, ...);
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default:
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break;
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}
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} while (dwarf_siblingof (&child, &child) == 0);
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}
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}
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const char* die_name = "";
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if(dwarf_diename(result)) {
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die_name = dwarf_diename(result);
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}
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ctx->log(SEVERITY_DEBUG, "Lexical block with name '%s', tag 0x%X and origin '%s' found. lowpc = 0x%lX, highpc = 0x%lX", die_name, dwarf_tag (result), origin_name, lowpc, highpc);
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Dwarf_Die child;
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if(dwarf_child (result, &child) == 0) {
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do {
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switch (dwarf_tag (&child)) {
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case DW_TAG_lexical_block:
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handle_lexical_block(&child);
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break;
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case DW_TAG_variable: {
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pst_parameter* param = add_param();
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if(!param->handle_dwarf(&child, this)) {
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del_param(param);
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}
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break;
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}
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case DW_TAG_GNU_call_site:
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handle_call_site(&child);
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break;
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case DW_TAG_inlined_subroutine:
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ctx->log(SEVERITY_DEBUG, "Skipping Lexical block tag 'DW_TAG_inlined_subroutine'");
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break;
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default:
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ctx->log(SEVERITY_DEBUG, "Unknown Lexical block tag 0x%X", dwarf_tag(&child));
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break;
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}
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}while (dwarf_siblingof (&child, &child) == 0);
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}
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return true;
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}
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// DW_AT_low_pc should point to the offset from process base address which is actually PC of current function, usually.
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// further handle DW_AT_abstract_origin attribute of DW_TAG_GNU_call_site DIE to determine what DIE is referenced by it.
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// probably by invoke by:
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// Dwarf_Die *scopes;
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// int n = dwarf_getscopes_die (funcdie, &scopes); // where 'n' is the number of scopes
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// if (n <= 0) -> FAILURE
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// see handle_function() in elfutils/tests/funcscopes.c -> handle_function() -> print_vars()
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// DW_TAG_GNU_call_site_parameter is defined under child DIE of DW_TAG_GNU_call_site and defines value of subroutine before calling it
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// relates to DW_OP_GNU_entry_value() handling in callee function to determine the value of an argument/variable of the callee
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// get DIE of return type
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bool __pst_function::handle_call_site(Dwarf_Die* result)
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{
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Dwarf_Die origin;
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Dwarf_Attribute attr_mem;
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Dwarf_Attribute* attr;
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ctx->log(SEVERITY_DEBUG, "***** DW_TAG_GNU_call_site contents:");
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// reference to DIE which represents callee's parameter if compiler knows where it is at compile time
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const char* oname = NULL;
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if(dwarf_hasattr (result, DW_AT_abstract_origin) && dwarf_formref_die (dwarf_attr (result, DW_AT_abstract_origin, &attr_mem), &origin) != NULL) {
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oname = dwarf_diename(&origin);
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ctx->log(SEVERITY_DEBUG, "\tDW_AT_abstract_origin: '%s'", oname);
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}
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// The call site may have a DW_AT_call_site_target attribute which is a DWARF expression. For indirect calls or jumps where it is unknown at
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// compile time which subprogram will be called the expression computes the address of the subprogram that will be called.
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uint64_t target = 0;
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if(dwarf_hasattr (result, DW_AT_GNU_call_site_target)) {
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attr = dwarf_attr(result, DW_AT_GNU_call_site_target, &attr_mem);
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if(attr) {
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pst_dwarf_expr expr(ctx->alloc);
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if(handle_location(ctx, &attr_mem, expr, pc, this)) {
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target = expr.value;
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ctx->log(SEVERITY_DEBUG, "\tDW_AT_GNU_call_site_target: %#lX", target);
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}
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}
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}
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if(target == 0 && oname == NULL) {
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ctx->log(SEVERITY_ERROR, "Cannot determine both call-site target and origin");
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return false;
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}
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Dwarf_Die child;
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if(dwarf_child (result, &child) == 0) {
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pst_call_site* st = add_call_site(target, oname);
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if(!st->handle_dwarf(&child)) {
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del_call_site(st);
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return false;
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}
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||||
}
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||||
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return true;
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}
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bool __pst_function::handle_dwarf(Dwarf_Die* d)
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||||
{
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die = d;
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get_frame();
|
||||
|
||||
Dwarf_Attribute attr_mem;
|
||||
Dwarf_Attribute* attr;
|
||||
|
||||
// get list of offsets from process base address of continuous memory ranges where function's code resides
|
||||
// if(dwarf_haspc(d, pc)) {
|
||||
dwarf_lowpc(d, &lowpc);
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||||
dwarf_highpc(d, &highpc);
|
||||
// } else {
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||||
// ctx->log(SEVERITY_ERROR, "Function's '%s' DIE hasn't definitions of memory offsets of function's code", dwarf_diename(d));
|
||||
// return false;
|
||||
// }
|
||||
|
||||
unw_proc_info_t info;
|
||||
unw_get_proc_info(&cursor, &info);
|
||||
ctx->clean_print(ctx);
|
||||
|
||||
ctx->log(SEVERITY_INFO, "Function %s(...): LOW_PC = %#lX, HIGH_PC = %#lX, offset from base address: 0x%lX, START_PC = 0x%lX, offset from start of function: 0x%lX",
|
||||
dwarf_diename(d), lowpc, highpc, pc - ctx->base_addr, info.start_ip, info.start_ip - ctx->base_addr);
|
||||
ctx->print_registers(ctx, 0x0, 0x10);
|
||||
ctx->log(SEVERITY_INFO, "Function %s(...): CFA: %#lX %s", dwarf_diename(d), parent ? parent->sp : 0, ctx->buff);
|
||||
ctx->log(SEVERITY_INFO, "Function %s(...): %s", dwarf_diename(d), ctx->buff);
|
||||
|
||||
// determine function's stack frame base
|
||||
attr = dwarf_attr(die, DW_AT_frame_base, &attr_mem);
|
||||
if(attr) {
|
||||
if(dwarf_hasform(attr, DW_FORM_exprloc)) {
|
||||
Dwarf_Op *expr;
|
||||
size_t exprlen;
|
||||
if (dwarf_getlocation (attr, &expr, &exprlen) == 0) {
|
||||
ctx->print_expr(ctx, expr, exprlen, attr);
|
||||
pst_decl(pst_dwarf_stack, stack, ctx);
|
||||
if(stack.calc(&stack, expr, exprlen, attr, this)) {
|
||||
uint64_t value;
|
||||
if(stack.get_value(&stack, &value)) {
|
||||
ctx->log(SEVERITY_DEBUG, "DW_AT_framebase expression: \"%s\" ==> 0x%lX", ctx->buff, value);
|
||||
} else {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to get value of calculated DW_AT_framebase expression: %s", ctx->buff);
|
||||
}
|
||||
} else {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to calculate DW_AT_framebase expression: %s", ctx->buff);
|
||||
}
|
||||
pst_dwarf_stack_fini(&stack);
|
||||
} else {
|
||||
ctx->log(SEVERITY_WARNING, "Unknown attribute form = 0x%X, code = 0x%X", attr->form, attr->code);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Get reference to return attribute type of the function
|
||||
// may be to use dwfl_module_return_value_location() instead
|
||||
pst_parameter* ret_p = add_param(); ret_p->is_return = true;
|
||||
attr = dwarf_attr(die, DW_AT_type, &attr_mem);
|
||||
if(attr) {
|
||||
if(!ret_p->handle_type(attr)) {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to handle return parameter type for function %s(...)", name.c_str());
|
||||
del_param(ret_p);
|
||||
}
|
||||
} else {
|
||||
ret_p->add_type("void", 0);
|
||||
}
|
||||
|
||||
// handle and save additionally these attributes:
|
||||
// 1. string of DW_AT_linkage_name (mangled name of program if any)
|
||||
// A debugging information entry may have a DW_AT_linkage_name attribute
|
||||
// whose value is a null-terminated string containing the object file linkage name
|
||||
// associated with the corresponding entity.
|
||||
|
||||
// 2. flag DW_AT_external attribute
|
||||
// A DW_AT_external attribute, which is a flag, if the name of a variable is
|
||||
// visible outside of its enclosing compilation unit.
|
||||
|
||||
// 3. A subroutine entry may contain a DW_AT_main_subprogram attribute which is
|
||||
// a flag whose presence indicates that the subroutine has been identified as the
|
||||
// starting function of the program. If more than one subprogram contains this flag,
|
||||
// any one of them may be the starting subroutine of the program.
|
||||
|
||||
|
||||
Dwarf_Die result;
|
||||
if(dwarf_child(die, &result) != 0)
|
||||
return false;
|
||||
|
||||
// went through parameters and local variables of the function
|
||||
do {
|
||||
switch (dwarf_tag(&result)) {
|
||||
case DW_TAG_formal_parameter:
|
||||
case DW_TAG_variable: {
|
||||
pst_parameter* param = add_param();
|
||||
if(!param->handle_dwarf(&result, this)) {
|
||||
del_param(param);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case DW_TAG_GNU_call_site:
|
||||
handle_call_site(&result);
|
||||
break;
|
||||
|
||||
// case DW_TAG_inlined_subroutine:
|
||||
// /* Recurse further down */
|
||||
// HandleFunction(&result);
|
||||
// break;
|
||||
case DW_TAG_lexical_block: {
|
||||
handle_lexical_block(&result);
|
||||
break;
|
||||
}
|
||||
// Also handle:
|
||||
// DW_TAG_unspecified_parameters (unknown number of arguments i.e. fun(arg1, ...);
|
||||
// DW_AT_inline
|
||||
default:
|
||||
ctx->log(SEVERITY_DEBUG, "Unknown TAG of function: 0x%X", dwarf_tag(&result));
|
||||
break;
|
||||
}
|
||||
} while(dwarf_siblingof(&result, &result) == 0);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool __pst_function::unwind(Dwarf_Addr addr)
|
||||
{
|
||||
pc = addr;
|
||||
|
||||
Dwfl_Line *dwline = dwfl_getsrc(ctx->dwfl, addr);
|
||||
if(dwline != NULL) {
|
||||
Dwarf_Addr addr;
|
||||
const char* filename = dwfl_lineinfo (dwline, &addr, &line, NULL, NULL, NULL);
|
||||
if(filename) {
|
||||
const char* str = strrchr(filename, '/');
|
||||
if(str && *str != 0) {
|
||||
str++;
|
||||
} else {
|
||||
str = filename;
|
||||
}
|
||||
file = str;
|
||||
ctx->print(ctx, "%s:%d", str, line);
|
||||
} else {
|
||||
ctx->print(ctx, "%p", (void*)addr);
|
||||
}
|
||||
} else {
|
||||
ctx->print(ctx, "%p", (void*)addr);
|
||||
}
|
||||
|
||||
const char* addrname = dwfl_module_addrname(ctx->module, addr);
|
||||
char* demangle_name = NULL;
|
||||
if(addrname) {
|
||||
int status;
|
||||
demangle_name = abi::__cxa_demangle(addrname, NULL, NULL, &status);
|
||||
char* function_name = NULL;
|
||||
if(asprintf(&function_name, "%s%s", demangle_name ? demangle_name : addrname, demangle_name ? "" : "()") == -1) {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to allocate memory");
|
||||
return false;
|
||||
}
|
||||
ctx->print(ctx, " --> %s", function_name);
|
||||
|
||||
char* str = strchr(function_name, '(');
|
||||
if(str) {
|
||||
*str = 0;
|
||||
}
|
||||
name = function_name;
|
||||
free(function_name);
|
||||
}
|
||||
|
||||
if(demangle_name) {
|
||||
free(demangle_name);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool __pst_function::get_frame()
|
||||
{
|
||||
// get CFI (Call Frame Information) for current module
|
||||
// from handle_cfi()
|
||||
Dwarf_Addr mod_bias = 0;
|
||||
Dwarf_CFI* cfi = dwfl_module_eh_cfi(ctx->module, &mod_bias); // rty .eh_cfi first
|
||||
if(!cfi) { // then try .debug_fame second
|
||||
cfi = dwfl_module_dwarf_cfi(ctx->module, &mod_bias);
|
||||
}
|
||||
if(!cfi) {
|
||||
ctx->log(SEVERITY_ERROR, "Cannot find CFI for module");
|
||||
return false;
|
||||
}
|
||||
|
||||
// get frame of CFI for address
|
||||
int result = dwarf_cfi_addrframe (cfi, pc - mod_bias, &frame);
|
||||
if (result != 0) {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to find CFI frame for module");
|
||||
return false;
|
||||
}
|
||||
|
||||
// setup context to match frame
|
||||
ctx->frame = frame;
|
||||
|
||||
// get return register and PC range for function
|
||||
Dwarf_Addr start = pc;
|
||||
Dwarf_Addr end = pc;
|
||||
bool signalp;
|
||||
int ra_regno = dwarf_frame_info (frame, &start, &end, &signalp);
|
||||
if(ra_regno >= 0) {
|
||||
start += mod_bias;
|
||||
end += mod_bias;
|
||||
reginfo info; info.regno = ra_regno;
|
||||
dwfl_module_register_names(ctx->module, regname_callback, &info);
|
||||
ctx->log(SEVERITY_INFO, "Function %s(...): '.eh/debug frame' info: PC range: => [%#" PRIx64 ", %#" PRIx64 "], return register: %s, in_signal = %s",
|
||||
name.c_str(), start, end, info.regname, signalp ? "true" : "false");
|
||||
} else {
|
||||
ctx->log(SEVERITY_WARNING, "Return address register info unavailable (%s)", dwarf_errmsg(0));
|
||||
}
|
||||
|
||||
// finally get CFA (Canonical Frame Address)
|
||||
// Point cfa_ops to dummy to match print_detail expectations.
|
||||
// (nops == 0 && cfa_ops != NULL => "undefined")
|
||||
Dwarf_Op dummy;
|
||||
Dwarf_Op *cfa_ops = &dummy;
|
||||
size_t cfa_nops;
|
||||
if(dwarf_frame_cfa(frame, &cfa_ops, &cfa_nops)) {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to get CFA for frame");
|
||||
return false;
|
||||
}
|
||||
|
||||
ctx->print_expr(ctx, cfa_ops, cfa_nops, NULL);
|
||||
pst_decl(pst_dwarf_stack, stack, ctx);
|
||||
if(stack.calc(&stack, cfa_ops, cfa_nops, NULL, this) && stack.get_value(&stack, &cfa)) {
|
||||
//ctx.sp = v;
|
||||
ctx->log(SEVERITY_INFO, "Function %s(...): CFA expression: %s ==> %#lX", name.c_str(), ctx->buff, cfa);
|
||||
|
||||
// setup context to match CFA for frame
|
||||
ctx->cfa = cfa;
|
||||
} else {
|
||||
ctx->log(SEVERITY_ERROR, "Failed to calculate CFA expression");
|
||||
}
|
||||
|
||||
pst_dwarf_stack_fini(&stack);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool __pst_handler::get_dwarf_function(pst_function* fun)
|
||||
{
|
||||
Dwarf_Addr mod_cu = 0;
|
||||
|
||||
Reference in New Issue
Block a user