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/*
* Check decoding of prctl PR_PPC_GET_DEXCR and PR_PPC_SET_DEXCR operations.
*
* Copyright (c) 2021-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/prctl.h>
#include "xlat.h"
#include "xlat/pr_ppc_dexcr_ctrl_flags.h"
#ifdef INJECT_RETVAL
# define INJ_STR " (INJECTED)"
#else
# define INJ_STR ""
#endif
#if SIZEOF_KERNEL_LONG_T == 8
# define HIBITS(a) a
#else
# define HIBITS(a)
#endif
int
main(int argc, char *argv[])
{
prctl_marker();
#ifdef INJECT_RETVAL
unsigned long num_skip;
long inject_retval;
bool locked = false;
if (argc < 3)
error_msg_and_fail("Usage: %s NUM_SKIP INJECT_RETVAL", argv[0]);
num_skip = strtoul(argv[1], NULL, 0);
inject_retval = strtol(argv[2], NULL, 0);
for (size_t i = 0; i < num_skip; i++) {
if (prctl_marker() != inject_retval)
continue;
locked = true;
break;
}
if (!locked)
error_msg_and_fail("Have not locked on prctl(-1, -2, -3, -4"
", -5) returning %ld", inject_retval);
#endif /* INJECT_RETVAL */
static const struct strval_klong aspects[] = {
{ 0, "PR_PPC_DEXCR_SBHE" },
{ 1, "PR_PPC_DEXCR_IBRTPD" },
{ 2, "PR_PPC_DEXCR_SRAPD" },
{ 3, "PR_PPC_DEXCR_NPHIE" },
{ 4, NULL },
{ 4, NULL },
};
static const struct strval_klong flags[] = {
{ 0, "" },
{ 1, "PR_PPC_DEXCR_CTRL_EDITABLE" },
{ 2, "PR_PPC_DEXCR_CTRL_SET" },
{ 3, "PR_PPC_DEXCR_CTRL_EDITABLE|PR_PPC_DEXCR_CTRL_SET" },
{ 23, "PR_PPC_DEXCR_CTRL_EDITABLE|PR_PPC_DEXCR_CTRL_SET"
"|PR_PPC_DEXCR_CTRL_CLEAR"
"|PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC" },
{ 0xe0, NULL },
{ 0x57ae57e9, "PR_PPC_DEXCR_CTRL_EDITABLE"
"|PR_PPC_DEXCR_CTRL_SET_ONEXEC|0x57ae57e0" },
{ (kernel_ulong_t) -1LLU, "PR_PPC_DEXCR_CTRL_EDITABLE"
"|PR_PPC_DEXCR_CTRL_SET"
"|PR_PPC_DEXCR_CTRL_CLEAR"
"|PR_PPC_DEXCR_CTRL_SET_ONEXEC"
"|PR_PPC_DEXCR_CTRL_CLEAR_ONEXEC"
"|0x" HIBITS("ffffffff") "ffffffe0" },
};
long rc;
for (size_t i = 0; i < ARRAY_SIZE(aspects); i++) {
for (size_t j = 0; j < ARRAY_SIZE(flags); j++) {
rc = syscall(__NR_prctl, PR_PPC_SET_DEXCR,
aspects[i].val, flags[j].val, 1, 2);
const char *errstr = sprintrc(rc);
printf("prctl(" XLAT_KNOWN(0x49, "PR_PPC_SET_DEXCR")
", %s",
sprintxlat(aspects[i].str,aspects[i].val,
"PR_PPC_DEXCR_???"));
printf(", %s, 0x1, 0x2) = %s" INJ_STR "\n",
sprintxlat(flags[j].str && flags[j].str[0]
? flags[j].str : NULL,
flags[j].val,
flags[j].str
? NULL : "PR_PPC_DEXCR_CTRL_???"),
errstr);
}
for (size_t j = 0; j < 2; j++) {
rc = syscall(__NR_prctl, PR_PPC_GET_DEXCR,
aspects[i].val, j, j, j);
const char *errstr = sprintrc(rc);
printf("prctl(" XLAT_KNOWN(0x48, "PR_PPC_GET_DEXCR")
", %s, %#zx, %#zx, %#zx) = ",
sprintxlat(aspects[i].str,aspects[i].val,
"PR_PPC_DEXCR_???"), j, j, j);
if (rc > 0) {
printf("%#lx", rc);
#if !XLAT_RAW
size_t k;
for (k = 0; k < ARRAY_SIZE(flags); k++) {
if (flags[k].val == (unsigned long) rc)
{
if (flags[k].str) {
printf(" (%s)",
flags[k].str);
}
break;
}
}
if (k == ARRAY_SIZE(flags)
&& (rc & PR_PPC_DEXCR_CTRL_MASK)) {
printf(" (");
printflags(pr_ppc_dexcr_ctrl_flags, rc,
NULL);
printf(")");
}
#endif /* !XLAT_RAW */
puts(INJ_STR);
} else {
printf("%s" INJ_STR "\n", errstr);
}
}
}
puts("+++ exited with 0 +++");
return 0;
}
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