124 lines
2.4 KiB
C
124 lines
2.4 KiB
C
/*
|
|
* Ptrace test for GPR/FPR registers
|
|
*
|
|
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#include "ptrace.h"
|
|
#include "ptrace-gpr.h"
|
|
#include "reg.h"
|
|
|
|
/* Tracer and Tracee Shared Data */
|
|
int shm_id;
|
|
int *cptr, *pptr;
|
|
|
|
float a = FPR_1;
|
|
float b = FPR_2;
|
|
float c = FPR_3;
|
|
|
|
void gpr(void)
|
|
{
|
|
unsigned long gpr_buf[18];
|
|
float fpr_buf[32];
|
|
|
|
cptr = (int *)shmat(shm_id, NULL, 0);
|
|
|
|
asm __volatile__(
|
|
ASM_LOAD_GPR_IMMED(gpr_1)
|
|
ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
|
|
:
|
|
: [gpr_1]"i"(GPR_1), [flt_1] "r" (&a)
|
|
: "memory", "r6", "r7", "r8", "r9", "r10",
|
|
"r11", "r12", "r13", "r14", "r15", "r16", "r17",
|
|
"r18", "r19", "r20", "r21", "r22", "r23", "r24",
|
|
"r25", "r26", "r27", "r28", "r29", "r30", "r31"
|
|
);
|
|
|
|
cptr[1] = 1;
|
|
|
|
while (!cptr[0])
|
|
asm volatile("" : : : "memory");
|
|
|
|
shmdt((void *)cptr);
|
|
store_gpr(gpr_buf);
|
|
store_fpr_single_precision(fpr_buf);
|
|
|
|
if (validate_gpr(gpr_buf, GPR_3))
|
|
exit(1);
|
|
|
|
if (validate_fpr_float(fpr_buf, c))
|
|
exit(1);
|
|
|
|
exit(0);
|
|
}
|
|
|
|
int trace_gpr(pid_t child)
|
|
{
|
|
unsigned long gpr[18];
|
|
unsigned long fpr[32];
|
|
|
|
FAIL_IF(start_trace(child));
|
|
FAIL_IF(show_gpr(child, gpr));
|
|
FAIL_IF(validate_gpr(gpr, GPR_1));
|
|
FAIL_IF(show_fpr(child, fpr));
|
|
FAIL_IF(validate_fpr(fpr, FPR_1_REP));
|
|
FAIL_IF(write_gpr(child, GPR_3));
|
|
FAIL_IF(write_fpr(child, FPR_3_REP));
|
|
FAIL_IF(stop_trace(child));
|
|
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int ptrace_gpr(void)
|
|
{
|
|
pid_t pid;
|
|
int ret, status;
|
|
|
|
shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT);
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
perror("fork() failed");
|
|
return TEST_FAIL;
|
|
}
|
|
if (pid == 0)
|
|
gpr();
|
|
|
|
if (pid) {
|
|
pptr = (int *)shmat(shm_id, NULL, 0);
|
|
while (!pptr[1])
|
|
asm volatile("" : : : "memory");
|
|
|
|
ret = trace_gpr(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_gpr, "ptrace_gpr");
|
|
}
|