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Building a gdb that includes the PPC sim in C++ mode fails to link with: (...)s.o compile-object-load.o compile-object-run.o compile-loc2c.o compile-c-support.o inflow.o init.o \ ../sim/ppc/libsim.a ../readline/libreadline.a ../opcodes/libopcodes.a ../bfd/libbfd.a -lz ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a -ldl -ldl -lncurses -lm -ldl -lguile-2.0 -lgc -lpthread -ldl -lutil -lm -lpython2.7 -Xlinker -export-dynamic -lexpat -llzma -lbabeltrace -lbabeltrace-ctf ../libiberty/libiberty.a build-gnulib/import/libgnu.a ../sim/ppc/libsim.a(sim_calls.o): In function `sim_open': /home/pedro/gdb/mygit/cxx-convertion/src/sim/ppc/sim_calls.c:73: undefined reference to `printf_filtered' /home/pedro/gdb/mygit/cxx-convertion/src/sim/ppc/sim_calls.c:73: undefined reference to `printf_filtered' ../sim/ppc/libsim.a(sim_calls.o): In function `sim_close': /home/pedro/gdb/mygit/cxx-convertion/src/sim/ppc/sim_calls.c:93: undefined reference to `printf_filtered' /home/pedro/gdb/mygit/cxx-convertion/src/sim/ppc/sim_calls.c:93: undefined reference to `printf_filtered' ../sim/ppc/libsim.a(sim_calls.o): In function `sim_load': /home/pedro/gdb/mygit/cxx-convertion/src/sim/ppc/sim_calls.c:102: undefined reference to `printf_filtered' ../sim/ppc/libsim.a(sim_calls.o):/home/pedro/gdb/mygit/cxx-convertion/src/sim/ppc/sim_calls.c:102: more undefined references to `printf_filtered' follow collect2: error: ld returned 1 exit status The undefined references come from TRACE macro calls, which expand to calls to printf_filtered. But note that the sim's 'printf_filtered' is actually a #define to 'sim_io_printf_filtered', in sim_callbacks.h : #define printf_filtered sim_io_printf_filtered AFAICS, this is not meant to call gdb's printf_filtered function. The ChangeLog entry that added the printf_filtered macro reads: Tue Jul 30 21:12:24 1996 Andrew Cagney <cagney@kremvax.highland.com.au> * sim_callbacks.h (sim_io_printf_filtered): Replace printf_filtered with a local simulator specific version. Add #define printf_filtered to simplify updating of existing code. That is, just another incomplete/partial transition. Maybe prior to 1996 this was really meant to call gdb's printf_filtered version. The reference to printf_filtered appears because sim_calls.c, the compilation unit that fails to link, has this at the top: #undef printf_filtered /* blow away the mapping */ presumably so that this further below: void sim_io_printf_filtered(const char *fmt, ...) { (...) callbacks->printf_filtered(callbacks, "%s", message); } works. So those TRACE macros instances in sim_calls.c just happen to work because gdb is linked in, which satisfies the 'printf_filtered' reference, when GDB is built in C mode. When built in C++ mode, the problem is exposed, as GDB's printf_filtered is mangled. The fix here is to make the TRACE macro call sim_io_printf_filtered directly. (Standalone "run" doesn't fail to link simply because the offending routines are not part of its link.) sim/ppc/ChangeLog 2015-11-17 Pedro Alves <palves@redhat.com> * debug.h (TRACE, ITRACE, DTRACE, DITRACE, PTRACE): Call sim_io_printf_filtered instead of printf_filtered.
174 lines
4.0 KiB
C
174 lines
4.0 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _DEBUG_H_
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#define _DEBUG_H_
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#include "filter_filename.h"
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typedef enum {
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trace_invalid,
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trace_tbd,
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/**/
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trace_gdb,
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trace_os_emul,
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/**/
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trace_events,
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trace_device_tree,
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trace_devices,
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trace_binary_device,
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trace_com_device,
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trace_console_device,
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trace_core_device,
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trace_disk_device,
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trace_eeprom_device,
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trace_file_device,
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trace_glue_device,
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trace_halt_device,
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trace_htab_device,
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trace_icu_device,
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trace_ide_device,
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trace_memory_device,
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trace_opic_device,
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trace_pal_device,
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trace_pass_device,
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trace_phb_device,
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trace_sem_device,
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trace_shm_device,
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trace_stack_device,
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trace_register_device,
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trace_vm_device,
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/**/
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trace_disklabel_package,
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/**/
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trace_semantics,
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trace_idecode,
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trace_alu,
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trace_load_store,
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trace_model,
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/**/
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trace_vm,
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trace_core,
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trace_interrupts,
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trace_psim,
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trace_device_init,
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trace_cpu,
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trace_breakpoint,
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trace_opts,
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trace_print_info,
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trace_print_device_tree,
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trace_dump_device_tree,
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nr_trace_options
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} trace_options;
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extern int ppc_trace[nr_trace_options];
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/* simple */
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#define TRACE(OBJECT, ARGS) \
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do { \
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if (WITH_TRACE) { \
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if (ppc_trace[OBJECT]) { \
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sim_io_printf_filtered("%s:%d: ", filter_filename(__FILE__), __LINE__); \
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sim_io_printf_filtered ARGS; \
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} \
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} \
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} while (0)
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/* issue */
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#define ITRACE(OBJECT, ARGS) \
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do { \
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if (WITH_TRACE) { \
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if (ppc_trace[OBJECT]) { \
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sim_io_printf_filtered("%s:%d:0x%08lx:%s ", itable[MY_INDEX].file, itable[MY_INDEX].line_nr, (long)cia, itable[MY_INDEX].name); \
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sim_io_printf_filtered ARGS; \
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} \
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} \
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} while (0)
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/* device */
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#define DTRACE(OBJECT, ARGS) \
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do { \
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if (WITH_TRACE) { \
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int trace_device = device_trace(me); \
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if (ppc_trace[trace_devices] \
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|| ppc_trace[trace_##OBJECT##_device] \
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|| trace_device) { \
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sim_io_printf_filtered("%s:%d:%s:%s%s ", \
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filter_filename(__FILE__), __LINE__, #OBJECT, \
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trace_device ? device_path(me) : "", \
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trace_device ? ":" : ""); \
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sim_io_printf_filtered ARGS; \
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} \
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} \
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} while (0)
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/* device instance */
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#define DITRACE(OBJECT, ARGS) \
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do { \
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if (WITH_TRACE) { \
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device *me = device_instance_device(instance); \
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int trace_device = device_trace(me); \
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if (ppc_trace[trace_devices] \
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|| ppc_trace[trace_##OBJECT##_device] \
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|| trace_device) { \
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sim_io_printf_filtered("%s:%d:%s:%s%s ", \
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filter_filename(__FILE__), __LINE__, #OBJECT, \
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trace_device ? device_path(me) : "", \
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trace_device ? ":" : ""); \
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sim_io_printf_filtered ARGS; \
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} \
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} \
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} while (0)
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/* package */
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#define PTRACE(OBJECT, ARGS) \
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do { \
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if (WITH_TRACE) { \
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if (ppc_trace[trace_##OBJECT##_package]) { \
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sim_io_printf_filtered("%s:%d:%s: ", filter_filename(__FILE__), __LINE__, #OBJECT); \
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sim_io_printf_filtered ARGS; \
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} \
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} \
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} while (0)
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#define ASSERT(EXPRESSION) \
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do { \
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if (WITH_ASSERT) { \
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if (!(EXPRESSION)) { \
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error("%s:%d: assertion failed - %s\n", \
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filter_filename(__FILE__), __LINE__, #EXPRESSION); \
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} \
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} \
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} while (0)
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/* Parse OPTION updating the trace array */
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extern void
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trace_option(const char *option, int setting);
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/* Output the list of trace options */
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extern void trace_usage
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(int verbose);
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#endif /* _DEBUG_H_ */
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