mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-19 03:53:51 -04:00
2569606720
The following error happens:
In file included from vstate_exec_nolibc.c:2:
/usr/include/riscv64-linux-gnu/sys/prctl.h:42:12: error: conflicting types for ‘prctl’; h
ave ‘int(int, ...)’
42 | extern int prctl (int __option, ...) __THROW;
| ^~~~~
In file included from ./../../../../include/nolibc/nolibc.h:99,
from <command-line>:
./../../../../include/nolibc/sys.h:892:5: note: previous definition of ‘prctl’ with type
‘int(int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)
’
892 | int prctl(int option, unsigned long arg2, unsigned long arg3,
| ^~~~~
Fix this by not including <sys/prctl.h>, which is not needed here since
prctl syscall is directly called using its number.
Fixes: 7cf6198ce2 ("selftests: Test RISC-V Vector prctl interface")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230713115829.110421-1-alexghiti@rivosinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#define THIS_PROGRAM "./vstate_exec_nolibc"
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int main(int argc, char **argv)
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{
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int rc, pid, status, test_inherit = 0;
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long ctrl, ctrl_c;
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char *exec_argv[2], *exec_envp[2];
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if (argc > 1)
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test_inherit = 1;
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ctrl = my_syscall1(__NR_prctl, PR_RISCV_V_GET_CONTROL);
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if (ctrl < 0) {
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puts("PR_RISCV_V_GET_CONTROL is not supported\n");
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return ctrl;
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}
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if (test_inherit) {
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pid = fork();
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if (pid == -1) {
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puts("fork failed\n");
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exit(-1);
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}
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/* child */
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if (!pid) {
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exec_argv[0] = THIS_PROGRAM;
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exec_argv[1] = NULL;
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exec_envp[0] = NULL;
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exec_envp[1] = NULL;
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/* launch the program again to check inherit */
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rc = execve(THIS_PROGRAM, exec_argv, exec_envp);
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if (rc) {
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puts("child execve failed\n");
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exit(-1);
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}
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}
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} else {
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pid = fork();
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if (pid == -1) {
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puts("fork failed\n");
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exit(-1);
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}
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if (!pid) {
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rc = my_syscall1(__NR_prctl, PR_RISCV_V_GET_CONTROL);
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if (rc != ctrl) {
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puts("child's vstate_ctrl not equal to parent's\n");
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exit(-1);
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}
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asm volatile (".option push\n\t"
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".option arch, +v\n\t"
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"vsetvli x0, x0, e32, m8, ta, ma\n\t"
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".option pop\n\t"
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);
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exit(ctrl);
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}
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}
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rc = waitpid(-1, &status, 0);
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if (WIFEXITED(status) && WEXITSTATUS(status) == -1) {
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puts("child exited abnormally\n");
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exit(-1);
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}
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if (WIFSIGNALED(status)) {
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if (WTERMSIG(status) != SIGILL) {
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puts("child was terminated by unexpected signal\n");
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exit(-1);
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}
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if ((ctrl & PR_RISCV_V_VSTATE_CTRL_CUR_MASK) != PR_RISCV_V_VSTATE_CTRL_OFF) {
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puts("child signaled by illegal V access but vstate_ctrl is not off\n");
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exit(-1);
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}
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/* child terminated, and its vstate_ctrl is off */
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exit(ctrl);
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}
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ctrl_c = WEXITSTATUS(status);
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if (test_inherit) {
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if (ctrl & PR_RISCV_V_VSTATE_CTRL_INHERIT) {
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if (!(ctrl_c & PR_RISCV_V_VSTATE_CTRL_INHERIT)) {
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puts("parent has inherit bit, but child has not\n");
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exit(-1);
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}
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}
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rc = (ctrl & PR_RISCV_V_VSTATE_CTRL_NEXT_MASK) >> 2;
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if (rc != PR_RISCV_V_VSTATE_CTRL_DEFAULT) {
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if (rc != (ctrl_c & PR_RISCV_V_VSTATE_CTRL_CUR_MASK)) {
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puts("parent's next setting does not equal to child's\n");
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exit(-1);
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}
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if (!(ctrl & PR_RISCV_V_VSTATE_CTRL_INHERIT)) {
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if ((ctrl_c & PR_RISCV_V_VSTATE_CTRL_NEXT_MASK) !=
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PR_RISCV_V_VSTATE_CTRL_DEFAULT) {
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puts("must clear child's next vstate_ctrl if !inherit\n");
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exit(-1);
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}
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}
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}
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}
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return ctrl;
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}
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