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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Ptrace test for VMX/VSX registers
*
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
*/
#include "ptrace.h"
#include "ptrace-vsx.h"
/* Tracer and Tracee Shared Data */
int shm_id;
int *cptr, *pptr;
unsigned long fp_load[VEC_MAX];
unsigned long fp_load_new[VEC_MAX];
unsigned long fp_store[VEC_MAX];
void vsx(void)
{
int ret;
cptr = (int *)shmat(shm_id, NULL, 0);
loadvsx(fp_load, 0);
cptr[1] = 1;
while (!cptr[0])
asm volatile("" : : : "memory");
shmdt((void *) cptr);
storevsx(fp_store, 0);
ret = compare_vsx_vmx(fp_store, fp_load_new);
if (ret)
exit(1);
exit(0);
}
int trace_vsx(pid_t child)
{
unsigned long vsx[VSX_MAX];
unsigned long vmx[VMX_MAX + 2][2];
FAIL_IF(start_trace(child));
FAIL_IF(show_vsx(child, vsx));
FAIL_IF(validate_vsx(vsx, fp_load));
FAIL_IF(show_vmx(child, vmx));
FAIL_IF(validate_vmx(vmx, fp_load));
memset(vsx, 0, sizeof(vsx));
memset(vmx, 0, sizeof(vmx));
load_vsx_vmx(fp_load_new, vsx, vmx);
FAIL_IF(write_vsx(child, vsx));
FAIL_IF(write_vmx(child, vmx));
FAIL_IF(stop_trace(child));
return TEST_PASS;
}
int ptrace_vsx(void)
{
pid_t pid;
int ret, status, i;
SKIP_IF(!have_hwcap(PPC_FEATURE_HAS_VSX));
shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT);
for (i = 0; i < VEC_MAX; i++)
fp_load[i] = i + rand();
for (i = 0; i < VEC_MAX; i++)
fp_load_new[i] = i + 2 * rand();
pid = fork();
if (pid < 0) {
perror("fork() failed");
return TEST_FAIL;
}
if (pid == 0)
vsx();
if (pid) {
pptr = (int *)shmat(shm_id, NULL, 0);
while (!pptr[1])
asm volatile("" : : : "memory");
ret = trace_vsx(pid);
if (ret) {
kill(pid, SIGTERM);
shmdt((void *)pptr);
shmctl(shm_id, IPC_RMID, NULL);
return TEST_FAIL;
}
pptr[0] = 1;
shmdt((void *)pptr);
ret = wait(&status);
shmctl(shm_id, IPC_RMID, NULL);
if (ret != pid) {
printf("Child's exit status not captured\n");
return TEST_FAIL;
}
return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
TEST_PASS;
}
return TEST_PASS;
}
int main(int argc, char *argv[])
{
return test_harness(ptrace_vsx, "ptrace_vsx");
}
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