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| author | Christian Menard <christian.menard@tu-dresden.de> | 2017-05-23 18:34:12 +0200 |
|---|---|---|
| committer | Christian Menard <christian.menard@tu-dresden.de> | 2017-05-30 10:47:54 +0000 |
| commit | 9c29b5a433ea4fc2a7d2d06ce052b33ce7c4a8c2 (patch) | |
| tree | 7f3d5f34992e94be55b4fc62e153d037ab8cdaa9 /util/tlm | |
| parent | 01921763a47d1ed2238ee5d4435edbf752783a95 (diff) | |
| download | gem5-9c29b5a433ea4fc2a7d2d06ce052b33ce7c4a8c2.tar.xz | |
misc: check address range in the SystemC example
Using a wrong offset or memory size may lead to segmentation faults.
This patch adds an address range check and produces an error message.
Change-Id: I79a72c05879266daf61a83367fe4ae386d1958a4
Reviewed-on: https://gem5-review.googlesource.com/3482
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Matthias Jung <jungma@eit.uni-kl.de>
Diffstat (limited to 'util/tlm')
| -rw-r--r-- | util/tlm/examples/slave_port/sc_target.cc | 12 | ||||
| -rw-r--r-- | util/tlm/examples/slave_port/sc_target.hh | 3 |
2 files changed, 15 insertions, 0 deletions
diff --git a/util/tlm/examples/slave_port/sc_target.cc b/util/tlm/examples/slave_port/sc_target.cc index c44a27149..152d99ae6 100644 --- a/util/tlm/examples/slave_port/sc_target.cc +++ b/util/tlm/examples/slave_port/sc_target.cc @@ -66,6 +66,14 @@ Target::Target(sc_core::sc_module_name name, } void +Target::check_address(unsigned long long int addr) +{ + if (addr < offset || addr >= offset + size) + SC_REPORT_FATAL("Target", "Address out of range. Did you set an " + "appropriate size and offset?"); +} + +void Target::b_transport(tlm::tlm_generic_payload& trans, sc_time& delay) { /* Execute the read or write commands */ @@ -75,6 +83,8 @@ Target::b_transport(tlm::tlm_generic_payload& trans, sc_time& delay) unsigned int Target::transport_dbg(tlm::tlm_generic_payload& trans) { + check_address(trans.get_address()); + tlm::tlm_command cmd = trans.get_command(); sc_dt::uint64 adr = trans.get_address() - offset; unsigned char* ptr = trans.get_data_ptr(); @@ -203,6 +213,8 @@ Target::execute_transaction_process() void Target::execute_transaction(tlm::tlm_generic_payload& trans) { + check_address(trans.get_address()); + tlm::tlm_command cmd = trans.get_command(); sc_dt::uint64 adr = trans.get_address() - offset; unsigned char* ptr = trans.get_data_ptr(); diff --git a/util/tlm/examples/slave_port/sc_target.hh b/util/tlm/examples/slave_port/sc_target.hh index 7a2d075d9..a10fb492d 100644 --- a/util/tlm/examples/slave_port/sc_target.hh +++ b/util/tlm/examples/slave_port/sc_target.hh @@ -91,6 +91,9 @@ struct Target: sc_module /** Method process that runs on target_done_event */ void execute_transaction_process(); + /** Helping function that checks if a requested address is with range */ + void check_address(unsigned long long int addr); + /** Helping Variables **/ unsigned long long int size; unsigned offset; |