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      1 #include "defs.h"
      2 
      3 #if defined I386 || defined X86_64 || defined X32
      4 
      5 # include <asm/ldt.h>
      6 
      7 void
      8 print_user_desc(struct tcb *tcp, long addr)
      9 {
     10 	struct user_desc desc;
     11 
     12 	if (umove(tcp, addr, &desc) < 0) {
     13 		tprintf("%lx", addr);
     14 		return;
     15 	}
     16 
     17 	if (!verbose(tcp)) {
     18 		tprintf("{entry_number:%d, ...}", desc.entry_number);
     19 		return;
     20 	}
     21 
     22 	tprintf("{entry_number:%d, "
     23 		"base_addr:%#08x, "
     24 		"limit:%d, "
     25 		"seg_32bit:%d, "
     26 		"contents:%d, "
     27 		"read_exec_only:%d, "
     28 		"limit_in_pages:%d, "
     29 		"seg_not_present:%d, "
     30 		"useable:%d}",
     31 		desc.entry_number,
     32 		desc.base_addr,
     33 		desc.limit,
     34 		desc.seg_32bit,
     35 		desc.contents,
     36 		desc.read_exec_only,
     37 		desc.limit_in_pages,
     38 		desc.seg_not_present,
     39 		desc.useable);
     40 }
     41 
     42 int
     43 sys_modify_ldt(struct tcb *tcp)
     44 {
     45 	if (entering(tcp)) {
     46 		tprintf("%ld, ", tcp->u_arg[0]);
     47 		if (tcp->u_arg[1] == 0
     48 		    || tcp->u_arg[2] != sizeof(struct user_desc)) {
     49 			tprintf("%lx", tcp->u_arg[1]);
     50 		} else {
     51 			print_user_desc(tcp, tcp->u_arg[1]);
     52 		}
     53 		tprintf(", %lu", tcp->u_arg[2]);
     54 	}
     55 	return 0;
     56 }
     57 
     58 int
     59 sys_set_thread_area(struct tcb *tcp)
     60 {
     61 	if (entering(tcp)) {
     62 		print_user_desc(tcp, tcp->u_arg[0]);
     63 	} else {
     64 		struct user_desc desc;
     65 
     66 		if (syserror(tcp) || umove(tcp, tcp->u_arg[0], &desc) < 0) {
     67 			/* returned entry_number is not available */
     68 		} else {
     69 			static char outstr[32];
     70 
     71 			sprintf(outstr, "entry_number:%d", desc.entry_number);
     72 			tcp->auxstr = outstr;
     73 			return RVAL_STR;
     74 		}
     75 	}
     76 	return 0;
     77 }
     78 
     79 int
     80 sys_get_thread_area(struct tcb *tcp)
     81 {
     82 	if (exiting(tcp)) {
     83 		if (syserror(tcp))
     84 			tprintf("%lx", tcp->u_arg[0]);
     85 		else
     86 			print_user_desc(tcp, tcp->u_arg[0]);
     87 	}
     88 	return 0;
     89 }
     90 
     91 #endif /* I386 || X86_64 || X32 */
     92 
     93 #if defined(M68K) || defined(MIPS)
     94 int
     95 sys_set_thread_area(struct tcb *tcp)
     96 {
     97 	if (entering(tcp))
     98 		tprintf("%#lx", tcp->u_arg[0]);
     99 	return 0;
    100 
    101 }
    102 #endif
    103 
    104 #if defined(M68K)
    105 int
    106 sys_get_thread_area(struct tcb *tcp)
    107 {
    108 	return RVAL_HEX;
    109 }
    110 #endif
    111