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detect attached debugger on OSX before generating trace/breakpoint trap

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This commit is contained in:
Vas Crabb 2018-01-10 06:51:01 +11:00
parent 31ffaa7819
commit 1ef11ac752
1 changed files with 17 additions and 7 deletions
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24
src/osd/modules/lib/osdlib_macosx.cpp
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@ -11,6 +11,7 @@
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <signal.h>
#include <dlfcn.h>
@ -92,13 +93,22 @@ void osd_free_executable(void *ptr, size_t size)
void osd_break_into_debugger(const char *message)
{
#ifdef MAME_DEBUG
printf("MAME exception: %s\n", message);
printf("Attempting to fall into debugger\n");
kill(getpid(), SIGTRAP);
#else
printf("Ignoring MAME exception: %s\n", message);
#endif
pid_t const mypid = getpid();
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, int(mypid) };
struct kinfo_proc info;
info.kp_proc.p_flag = 0;
std::size_t infosz = sizeof(info);
sysctl(mib, ARRAY_LENGTH(mib), &info, &infosz, nullptr, 0);
if (info.kp_proc.p_flag & P_TRACED)
{
printf("MAME exception: %s\n", message);
printf("Attempting to fall into debugger\n");
kill(mypid, SIGTRAP);
}
else
{
printf("Ignoring MAME exception: %s\n", message);
}
}