SYS-OSS/FRET-qemu
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re-introduce native breakpoints

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This commit is contained in:
Alwin Berger 2023-03-13 14:46:09 +01:00
parent febb739d00
commit deb5286724
3 changed files with 27 additions and 1 deletions
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5
include/libafl/exit.h
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@ -62,3 +62,8 @@ void libafl_exit_request_internal(CPUState* cpu, uint64_t pc, ShutdownCause caus
void libafl_exit_request_sync_backdoor(CPUState* cpu, target_ulong pc);
void libafl_exit_request_breakpoint(CPUState* cpu, target_ulong pc);
struct libafl_exit_reason* libafl_get_exit_reason(void);
#ifndef CONFIG_USER_ONLY
void libafl_qemu_set_native_breakpoint(vaddr pc);
void libafl_qemu_remove_native_breakpoint(vaddr pc);
#endif

18
libafl/exit.c
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@ -143,3 +143,21 @@ struct libafl_exit_reason* libafl_get_exit_reason(void)
return NULL;
}
#ifndef CONFIG_USER_ONLY
void libafl_qemu_set_native_breakpoint(vaddr pc)
{
CPUState *cpu;
CPU_FOREACH(cpu) {
cpu_breakpoint_insert(cpu, pc, BP_GDB, NULL);
}
}
void libafl_qemu_remove_native_breakpoint(vaddr pc)
{
CPUState *cpu;
CPU_FOREACH(cpu) {
cpu_breakpoint_remove(cpu, pc, BP_GDB);
}
}
#endif

5
system/cpus.c
View File

@ -333,7 +333,10 @@ void cpu_handle_guest_debug(CPUState *cpu)
cpu_single_step(cpu, 0);
}
} else {
gdb_set_stop_cpu(cpu);
/* Begin LibAFL changes */
// With LibAFL Breakpoints there is no gdb attached.
// gdb_set_stop_cpu(cpu);
/* End LibAFL changes */
qemu_system_debug_request();
cpu->stopped = true;
}