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| author | Mike Frysinger <vapier@gentoo.org> | 2021-06-26 23:03:53 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2021-06-27 10:48:07 -0400 |
| commit | b69bd9e723db53ce95c6ebb911d623b8f396b6ac (patch) | |
| tree | d2cde494c0cee486772f3a692052c29a13b9918b /sim/common | |
| parent | a7ffa88dc665b09f774c4a8cce1ac31377c96a74 (diff) | |
| download | gdb-b69bd9e723db53ce95c6ebb911d623b8f396b6ac.zip gdb-b69bd9e723db53ce95c6ebb911d623b8f396b6ac.tar.gz gdb-b69bd9e723db53ce95c6ebb911d623b8f396b6ac.tar.bz2 | |
sim: cgen: add asserts to fix unused engine warnings
If the user passed in values outside the range of [0, MAX_NR_PROCESSORS),
it would cause the code to access out-of-bind engine function pointers.
Add some asserts to catch that and to fix the related compiler warnings.
Diffstat (limited to 'sim/common')
| -rw-r--r-- | sim/common/ChangeLog | 4 | ||||
| -rw-r--r-- | sim/common/cgen-run.c | 5 |
2 files changed, 8 insertions, 1 deletions
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index 91e254c..8472b2b 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,5 +1,9 @@ 2021-06-27 Mike Frysinger <vapier@gentoo.org> + * cgen-run.c (engine_run_n): Assert cpu arguments are valid. + +2021-06-27 Mike Frysinger <vapier@gentoo.org> + * cgen-trace.h (cgen_trace_printf): Add ATTRIBUTE_PRINTF_2. (sim_disasm_sprintf): Likewise. diff --git a/sim/common/cgen-run.c b/sim/common/cgen-run.c index 1b097e1..0951c92 100644 --- a/sim/common/cgen-run.c +++ b/sim/common/cgen-run.c @@ -231,6 +231,9 @@ engine_run_n (SIM_DESC sd, int next_cpu_nr, int nr_cpus, int max_insns, int fast int i; ENGINE_FN *engine_fns[MAX_NR_PROCESSORS]; + SIM_ASSERT (nr_cpus <= MAX_NR_PROCESSORS); + SIM_ASSERT (next_cpu_nr >= 0 && next_cpu_nr < nr_cpus); + for (i = 0; i < nr_cpus; ++i) { SIM_CPU *cpu = STATE_CPU (sd, i); @@ -244,7 +247,7 @@ engine_run_n (SIM_DESC sd, int next_cpu_nr, int nr_cpus, int max_insns, int fast SIM_ENGINE_PREFIX_HOOK (sd); /* FIXME: proper cycling of all of them, blah blah blah. */ - while (next_cpu_nr != nr_cpus) + while (next_cpu_nr < nr_cpus) { SIM_CPU *cpu = STATE_CPU (sd, next_cpu_nr); |