tags 459820 + patch kthxbye Patch attached that reawakens some disabled strace code. Output of testcase is now:
<snip>
write(1, "--------------------\n", 21--------------------
) = 21
[ Process PID=9059 runs in 32 bit mode. ]
fork([i am 9060]
) = 9060
--- SIGCHLD (Child exited) @ 0 (0) ---
[ Process PID=9059 runs in 64 bit mode. ]
getpid() = 9059
write(1, "[i am 9059]\n", 12[i am 9059]
) = 12
exit_group(0) = ?
Process 9059 detached
Regards,
--
Chris Lamb, UK [EMAIL PROTECTED]
GPG: 0x634F9A20
--- syscall.c.orig 2008-01-11 08:51:23.000000000 +0000
+++ syscall.c 2008-01-11 08:52:40.000000000 +0000
@@ -944,34 +944,13 @@
return -1;
if (!(tcp->flags & TCB_INSYSCALL)) {
- static int currpers=-1;
- long val;
-
- /* Check CS register value. On x86-64 linux it is:
- * 0x33 for long mode (64 bit)
- * 0x23 for compatibility mode (32 bit)
- * It takes only one ptrace and thus doesn't need
- * to be cached.
- */
- if (upeek(pid, 8*CS, &val) < 0)
- return -1;
- switch(val)
- {
- case 0x23: currpers = 1; break;
- case 0x33: currpers = 0; break;
- default:
- fprintf(stderr, "Unknown value CS=0x%02X while "
- "detecting personality of process "
- "PID=%d\n", (int)val, pid);
- currpers = current_personality;
- break;
- }
-#if 0
- /* This version analyzes the opcode of a syscall instruction.
+ /* Analyze the opcode of a syscall instruction.
* (int 0x80 on i386 vs. syscall on x86-64)
* It works, but is too complicated.
*/
- unsigned long val, rip, i;
+ static int currpers=-1;
+ unsigned long call;
+ long rip;
if(upeek(pid, 8*RIP, &rip)<0)
perror("upeek(RIP)");
@@ -998,7 +977,6 @@
"PID=%d\n", (int)call, pid);
break;
}
-#endif
if(currpers != current_personality)
{
char *names[]={"64 bit", "32 bit"};
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