157 lines
2.7 KiB
C
157 lines
2.7 KiB
C
/* 013.c COPYRIGHT FUJITSU LIMITED 2016-2019 */
|
|
/* When SVE is enable, ptrace(SETREGSET + NT_PRFPREG) check. */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <signal.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <linux/elf.h>
|
|
#include "common.h"
|
|
|
|
static unsigned long inst_addr;
|
|
|
|
static int child_func(unsigned int vq)
|
|
{
|
|
int ret = -1;
|
|
struct user_fpsimd_state rd_fregs;
|
|
struct user_fpsimd_state cmp_fregs;
|
|
|
|
memset(&rd_fregs, 0, sizeof(rd_fregs));
|
|
memset(&cmp_fregs, 0, sizeof(cmp_fregs));
|
|
|
|
/* send PTRACE_TRACEME */
|
|
if (ptrace(PTRACE_TRACEME, 0, NULL, NULL)) {
|
|
perror("ptrace(PTRACE_TRACEME)");
|
|
goto out;
|
|
}
|
|
|
|
/* gen register */
|
|
gen_test_fpsimd(&cmp_fregs, vq);
|
|
|
|
/* enable SVE */
|
|
sve_get_vl();
|
|
|
|
/* stop mine, brk instruction */
|
|
asm volatile(
|
|
"adr x10, 1f\n"
|
|
"str x10, [%0]\n"
|
|
"nop\n"
|
|
"nop\n"
|
|
"1:\n"
|
|
"brk #0\n"
|
|
"nop\n"
|
|
: /* nothing */
|
|
: "r"(&inst_addr)
|
|
: "x10"
|
|
);
|
|
|
|
/* read register */
|
|
read_fpsimd(&rd_fregs);
|
|
|
|
/* compare */
|
|
if (fpsimd_compare(&cmp_fregs, &rd_fregs, sizeof(cmp_fregs))) {
|
|
printf("child-process compare failed.\n");
|
|
goto out;
|
|
}
|
|
|
|
/* success */
|
|
ret = 0;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int parent_func(pid_t cpid, unsigned int vq)
|
|
{
|
|
int ret = -1;
|
|
struct user_fpsimd_state wr_fregs;
|
|
struct iovec iov;
|
|
|
|
memset(&wr_fregs, 0, sizeof(wr_fregs));
|
|
memset(&iov, 0, sizeof(iov));
|
|
|
|
/* wait child stop */
|
|
if (wait_child_stop(cpid)) {
|
|
goto out;
|
|
}
|
|
|
|
/* gen register */
|
|
gen_test_fpsimd(&wr_fregs, vq);
|
|
|
|
/* PTRACE_SETREGSET */
|
|
iov.iov_len = sizeof(wr_fregs);
|
|
iov.iov_base = &wr_fregs;
|
|
if (ptrace(PTRACE_SETREGSET, cpid, NT_PRFPREG, &iov)) {
|
|
perror("ptrace(PTRACE_SETREGSET)");
|
|
goto cont;
|
|
}
|
|
|
|
/* success */
|
|
ret = 0;
|
|
cont:
|
|
/* rewrite child brk instruction */
|
|
if (rewrite_brk_inst(cpid, &inst_addr)) {
|
|
/* Through */
|
|
}
|
|
|
|
/* child continue */
|
|
if (ptrace(PTRACE_CONT, cpid, NULL, NULL)) {
|
|
perror("ptrace(PTRACE_CONT)");
|
|
ret = -1;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
TEST_FUNC(TEST_NUMBER, unused1, vq, unused2, unused3)
|
|
{
|
|
pid_t cpid = 0;
|
|
int func_ret = 0;
|
|
int ret = -1;
|
|
|
|
print_test_overview(tp_num);
|
|
|
|
/* create child process */
|
|
cpid = fork();
|
|
switch (cpid) {
|
|
case -1:
|
|
/* fork() error. */
|
|
perror("fork()");
|
|
goto out;
|
|
case 0:
|
|
/* child process */
|
|
func_ret = child_func(vq);
|
|
|
|
/* child exit */
|
|
exit(func_ret);
|
|
break;
|
|
default:
|
|
/* parent process */
|
|
func_ret = parent_func(cpid, vq);
|
|
|
|
/* wait child */
|
|
if (wait_child_exit(cpid)) {
|
|
goto out;
|
|
}
|
|
|
|
/* parent_func check */
|
|
if (func_ret) {
|
|
goto out;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* sccess. */
|
|
ret = 0;
|
|
out:
|
|
if (ret == 0) {
|
|
printf("RESULT: OK.\n");
|
|
} else {
|
|
printf("RESULT: NG.\n");
|
|
}
|
|
return ret;
|
|
}
|