1272343Sngie/* $NetBSD: t_lwp_create.c,v 1.2 2012/05/22 09:23:39 martin Exp $ */ 2272343Sngie 3272343Sngie/*- 4272343Sngie * Copyright (c) 2012 The NetBSD Foundation, Inc. 5272343Sngie * All rights reserved. 6272343Sngie * 7272343Sngie * Redistribution and use in source and binary forms, with or without 8272343Sngie * modification, are permitted provided that the following conditions 9272343Sngie * are met: 10272343Sngie * 1. Redistributions of source code must retain the above copyright 11272343Sngie * notice, this list of conditions and the following disclaimer. 12272343Sngie * 2. Redistributions in binary form must reproduce the above copyright 13272343Sngie * notice, this list of conditions and the following disclaimer in the 14272343Sngie * documentation and/or other materials provided with the distribution. 15272343Sngie * 16272343Sngie * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17272343Sngie * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18272343Sngie * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19272343Sngie * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20272343Sngie * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21272343Sngie * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22272343Sngie * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23272343Sngie * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24272343Sngie * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25272343Sngie * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26272343Sngie * POSSIBILITY OF SUCH DAMAGE. 27272343Sngie */ 28272343Sngie 29272343Sngie/* 30272343Sngie * This code is partly based on code by Joel Sing <joel at sing.id.au> 31272343Sngie */ 32272343Sngie 33272343Sngie#include <atf-c.h> 34272343Sngie#include <lwp.h> 35272343Sngie#include <stdio.h> 36272343Sngie#include <stdlib.h> 37272343Sngie#include <ucontext.h> 38272343Sngie#include <inttypes.h> 39272343Sngie#include <errno.h> 40272343Sngie 41272343Sngie#ifdef __alpha__ 42272343Sngie#include <machine/alpha_cpu.h> 43272343Sngie#endif 44272343Sngie#ifdef __amd64__ 45272343Sngie#include <machine/vmparam.h> 46272343Sngie#include <machine/psl.h> 47272343Sngie#endif 48272343Sngie#ifdef __hppa__ 49272343Sngie#include <machine/psl.h> 50272343Sngie#endif 51272343Sngie#ifdef __i386__ 52272343Sngie#include <machine/segments.h> 53272343Sngie#include <machine/psl.h> 54272343Sngie#endif 55272343Sngie#if defined(__m68k__) || defined(__sh3__) || defined __vax__ 56272343Sngie#include <machine/psl.h> 57272343Sngie#endif 58272343Sngie 59272343Sngievolatile lwpid_t the_lwp_id = 0; 60272343Sngie 61272343Sngiestatic void lwp_main_func(void* arg) 62272343Sngie{ 63272343Sngie the_lwp_id = _lwp_self(); 64272343Sngie _lwp_exit(); 65272343Sngie} 66272343Sngie 67272343Sngie/* 68272343Sngie * Hard to document - see usage examples below. 69272343Sngie */ 70272343Sngie#define INVALID_UCONTEXT(ARCH,NAME,DESC) \ 71272343Sngiestatic void ARCH##_##NAME(ucontext_t *); \ 72272343SngieATF_TC(lwp_create_##ARCH##_fail_##NAME); \ 73272343SngieATF_TC_HEAD(lwp_create_##ARCH##_fail_##NAME, tc) \ 74272343Sngie{ \ 75272343Sngie atf_tc_set_md_var(tc, "descr", "verify rejection of invalid ucontext " \ 76272343Sngie "on " #ARCH " due to " DESC); \ 77272343Sngie} \ 78272343Sngie \ 79272343SngieATF_TC_BODY(lwp_create_##ARCH##_fail_##NAME, tc) \ 80272343Sngie{ \ 81272343Sngie ucontext_t uc; \ 82272343Sngie lwpid_t lid; \ 83272343Sngie int error; \ 84272343Sngie \ 85272343Sngie getcontext(&uc); \ 86272343Sngie uc.uc_flags = _UC_CPU; \ 87272343Sngie ARCH##_##NAME(&uc); \ 88272343Sngie \ 89272343Sngie error = _lwp_create(&uc, 0, &lid); \ 90272343Sngie ATF_REQUIRE(error != 0 && errno == EINVAL); \ 91272343Sngie} \ 92272343Sngiestatic void ARCH##_##NAME(ucontext_t *uc) \ 93272343Sngie{ 94272343Sngie 95272343Sngie 96272343SngieATF_TC(lwp_create_works); 97272343SngieATF_TC_HEAD(lwp_create_works, tc) 98272343Sngie{ 99272343Sngie atf_tc_set_md_var(tc, "descr", "Verify creation of a lwp and waiting" 100272343Sngie " for it to finish"); 101272343Sngie} 102272343Sngie 103272343SngieATF_TC_BODY(lwp_create_works, tc) 104272343Sngie{ 105272343Sngie ucontext_t uc; 106272343Sngie lwpid_t lid; 107272343Sngie int error; 108272343Sngie void *stack; 109272343Sngie static const size_t ssize = 16*1024; 110272343Sngie 111272343Sngie stack = malloc(ssize); 112272343Sngie _lwp_makecontext(&uc, lwp_main_func, NULL, NULL, stack, ssize); 113272343Sngie 114272343Sngie error = _lwp_create(&uc, 0, &lid); 115272343Sngie ATF_REQUIRE(error == 0); 116272343Sngie 117272343Sngie error = _lwp_wait(lid, NULL); 118272343Sngie ATF_REQUIRE(error == 0); 119272343Sngie ATF_REQUIRE(lid == the_lwp_id); 120272343Sngie} 121272343Sngie 122272343SngieINVALID_UCONTEXT(generic, no_uc_cpu, "not setting cpu registers") 123272343Sngie uc->uc_flags &= ~_UC_CPU; 124272343Sngie} 125272343Sngie 126272343Sngie#ifdef __alpha__ 127272343SngieINVALID_UCONTEXT(alpha, pslset, "trying to clear the USERMODE flag") 128272343Sngie uc->uc_mcontext.__gregs[_REG_PS] &= ~ALPHA_PSL_USERMODE; 129272343Sngie} 130272343SngieINVALID_UCONTEXT(alpha, pslclr, "trying to set a 'must be zero' flag") 131272343Sngie uc->uc_mcontext.__gregs[_REG_PS] |= ALPHA_PSL_IPL_HIGH; 132272343Sngie} 133272343Sngie#endif 134272343Sngie#ifdef __amd64__ 135272343SngieINVALID_UCONTEXT(amd64, untouchable_rflags, "forbidden rflags changed") 136272343Sngie uc->uc_mcontext.__gregs[_REG_RFLAGS] |= PSL_MBZ; 137272343Sngie} 138272343Sngie/* 139272343Sngie * XXX: add invalid GS/DS selector tests 140272343Sngie */ 141272343SngieINVALID_UCONTEXT(amd64, pc_too_high, 142272343Sngie "instruction pointer outside userland address space") 143272343Sngie uc->uc_mcontext.__gregs[_REG_RIP] = VM_MAXUSER_ADDRESS; 144272343Sngie} 145272343Sngie#endif 146272343Sngie#ifdef __arm__ 147272343SngieINVALID_UCONTEXT(arm, invalid_mode, "psr or r15 set to non-user-mode") 148272343Sngie uc->uc_mcontext.__gregs[_REG_PC] |= 0x1f /*PSR_SYS32_MODE*/; 149272343Sngie uc->uc_mcontext.__gregs[_REG_CPSR] |= 0x03 /*R15_MODE_SVC*/; 150272343Sngie} 151272343Sngie#endif 152272343Sngie#ifdef __hppa__ 153272343SngieINVALID_UCONTEXT(hppa, invalid_1, "set illegal bits in psw") 154272343Sngie uc->uc_mcontext.__gregs[_REG_PSW] |= PSW_MBZ; 155272343Sngie} 156272343SngieINVALID_UCONTEXT(hppa, invalid_0, "clear illegal bits in psw") 157272343Sngie uc->uc_mcontext.__gregs[_REG_PSW] &= ~PSW_MBS; 158272343Sngie} 159272343Sngie#endif 160272343Sngie#ifdef __i386__ 161272343SngieINVALID_UCONTEXT(i386, untouchable_eflags, "changing forbidden eflags") 162272343Sngie uc->uc_mcontext.__gregs[_REG_EFL] |= PSL_IOPL; 163272343Sngie} 164272343SngieINVALID_UCONTEXT(i386, priv_escalation, "modifying priviledge level") 165272343Sngie uc->uc_mcontext.__gregs[_REG_CS] &= ~SEL_RPL; 166272343Sngie} 167272343Sngie#endif 168272343Sngie#ifdef __m68k__ 169272343SngieINVALID_UCONTEXT(m68k, invalid_ps_bits, 170272343Sngie "setting forbidden bits in the ps register") 171272343Sngie uc->uc_mcontext.__gregs[_REG_PS] |= (PSL_MBZ|PSL_IPL|PSL_S); 172272343Sngie} 173272343Sngie#endif 174272343Sngie#ifdef __sh3__ 175272343SngieINVALID_UCONTEXT(sh3, modify_userstatic, 176272343Sngie "modifying illegal bits in the status register") 177272343Sngie uc->uc_mcontext.__gregs[_REG_SR] |= PSL_MD; 178272343Sngie} 179272343Sngie#endif 180272343Sngie#ifdef __sparc__ 181272343SngieINVALID_UCONTEXT(sparc, pc_odd, "mis-aligned instruction pointer") 182272343Sngie uc->uc_mcontext.__gregs[_REG_PC] = 0x100002; 183272343Sngie} 184272343SngieINVALID_UCONTEXT(sparc, npc_odd, "mis-aligned next instruction pointer") 185272343Sngie uc->uc_mcontext.__gregs[_REG_nPC] = 0x100002; 186272343Sngie} 187272343SngieINVALID_UCONTEXT(sparc, pc_null, "NULL instruction pointer") 188272343Sngie uc->uc_mcontext.__gregs[_REG_PC] = 0; 189272343Sngie} 190272343SngieINVALID_UCONTEXT(sparc, npc_null, "NULL next instruction pointer") 191272343Sngie uc->uc_mcontext.__gregs[_REG_nPC] = 0; 192272343Sngie} 193272343Sngie#endif 194272343Sngie#ifdef __vax__ 195272343SngieINVALID_UCONTEXT(vax, psl_0, "clearing forbidden bits in psl") 196272343Sngie uc->uc_mcontext.__gregs[_REG_PSL] &= ~(PSL_U | PSL_PREVU); 197272343Sngie} 198272343SngieINVALID_UCONTEXT(vax, psl_1, "setting forbidden bits in psl") 199272343Sngie uc->uc_mcontext.__gregs[_REG_PSL] |= PSL_IPL | PSL_IS; 200272343Sngie} 201272343SngieINVALID_UCONTEXT(vax, psl_cm, "setting CM bit in psl") 202272343Sngie uc->uc_mcontext.__gregs[_REG_PSL] |= PSL_CM; 203272343Sngie} 204272343Sngie#endif 205272343Sngie 206272343SngieATF_TP_ADD_TCS(tp) 207272343Sngie{ 208272343Sngie ATF_TP_ADD_TC(tp, lwp_create_works); 209272343Sngie ATF_TP_ADD_TC(tp, lwp_create_generic_fail_no_uc_cpu); 210272343Sngie#ifdef __alpha__ 211272343Sngie ATF_TP_ADD_TC(tp, lwp_create_alpha_fail_pslset); 212272343Sngie ATF_TP_ADD_TC(tp, lwp_create_alpha_fail_pslclr); 213272343Sngie#endif 214272343Sngie#ifdef __amd64__ 215272343Sngie ATF_TP_ADD_TC(tp, lwp_create_amd64_fail_untouchable_rflags); 216272343Sngie ATF_TP_ADD_TC(tp, lwp_create_amd64_fail_pc_too_high); 217272343Sngie#endif 218272343Sngie#ifdef __arm__ 219272343Sngie ATF_TP_ADD_TC(tp, lwp_create_arm_fail_invalid_mode); 220272343Sngie#endif 221272343Sngie#ifdef __hppa__ 222272343Sngie ATF_TP_ADD_TC(tp, lwp_create_hppa_fail_invalid_1); 223272343Sngie ATF_TP_ADD_TC(tp, lwp_create_hppa_fail_invalid_0); 224272343Sngie#endif 225272343Sngie#ifdef __i386__ 226272343Sngie ATF_TP_ADD_TC(tp, lwp_create_i386_fail_untouchable_eflags); 227272343Sngie ATF_TP_ADD_TC(tp, lwp_create_i386_fail_priv_escalation); 228272343Sngie#endif 229272343Sngie#ifdef __m68k__ 230272343Sngie ATF_TP_ADD_TC(tp, lwp_create_m68k_fail_invalid_ps_bits); 231272343Sngie#endif 232272343Sngie#ifdef __sh3__ 233272343Sngie ATF_TP_ADD_TC(tp, lwp_create_sh3_fail_modify_userstatic); 234272343Sngie#endif 235272343Sngie#ifdef __sparc__ 236272343Sngie ATF_TP_ADD_TC(tp, lwp_create_sparc_fail_pc_odd); 237272343Sngie ATF_TP_ADD_TC(tp, lwp_create_sparc_fail_npc_odd); 238272343Sngie ATF_TP_ADD_TC(tp, lwp_create_sparc_fail_pc_null); 239272343Sngie ATF_TP_ADD_TC(tp, lwp_create_sparc_fail_npc_null); 240272343Sngie#endif 241272343Sngie#ifdef __vax__ 242272343Sngie ATF_TP_ADD_TC(tp, lwp_create_vax_fail_psl_0); 243272343Sngie ATF_TP_ADD_TC(tp, lwp_create_vax_fail_psl_1); 244272343Sngie ATF_TP_ADD_TC(tp, lwp_create_vax_fail_psl_cm); 245272343Sngie#endif 246272343Sngie return atf_no_error(); 247272343Sngie} 248