120 lines
2.2 KiB
C
120 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Ptrace test for GPR/FPR registers
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*
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* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
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*/
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#include "ptrace.h"
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#include "ptrace-gpr.h"
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#include "reg.h"
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/* Tracer and Tracee Shared Data */
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int shm_id;
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int *cptr, *pptr;
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float a = FPR_1;
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float b = FPR_2;
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float c = FPR_3;
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void gpr(void)
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{
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unsigned long gpr_buf[18];
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float fpr_buf[32];
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cptr = (int *)shmat(shm_id, NULL, 0);
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asm __volatile__(
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ASM_LOAD_GPR_IMMED(gpr_1)
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ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
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:
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: [gpr_1]"i"(GPR_1), [flt_1] "b" (&a)
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: "memory", "r6", "r7", "r8", "r9", "r10",
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"r11", "r12", "r13", "r14", "r15", "r16", "r17",
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"r18", "r19", "r20", "r21", "r22", "r23", "r24",
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"r25", "r26", "r27", "r28", "r29", "r30", "r31"
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);
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cptr[1] = 1;
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while (!cptr[0])
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asm volatile("" : : : "memory");
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shmdt((void *)cptr);
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store_gpr(gpr_buf);
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store_fpr_single_precision(fpr_buf);
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if (validate_gpr(gpr_buf, GPR_3))
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exit(1);
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if (validate_fpr_float(fpr_buf, c))
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exit(1);
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exit(0);
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}
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int trace_gpr(pid_t child)
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{
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unsigned long gpr[18];
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unsigned long fpr[32];
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FAIL_IF(start_trace(child));
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FAIL_IF(show_gpr(child, gpr));
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FAIL_IF(validate_gpr(gpr, GPR_1));
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FAIL_IF(show_fpr(child, fpr));
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FAIL_IF(validate_fpr(fpr, FPR_1_REP));
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FAIL_IF(write_gpr(child, GPR_3));
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FAIL_IF(write_fpr(child, FPR_3_REP));
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FAIL_IF(stop_trace(child));
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return TEST_PASS;
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}
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int ptrace_gpr(void)
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{
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pid_t pid;
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int ret, status;
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shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT);
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pid = fork();
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if (pid < 0) {
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perror("fork() failed");
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return TEST_FAIL;
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}
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if (pid == 0)
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gpr();
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if (pid) {
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pptr = (int *)shmat(shm_id, NULL, 0);
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while (!pptr[1])
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asm volatile("" : : : "memory");
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ret = trace_gpr(pid);
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if (ret) {
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kill(pid, SIGTERM);
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shmdt((void *)pptr);
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shmctl(shm_id, IPC_RMID, NULL);
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return TEST_FAIL;
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}
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pptr[0] = 1;
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shmdt((void *)pptr);
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ret = wait(&status);
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shmctl(shm_id, IPC_RMID, NULL);
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if (ret != pid) {
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printf("Child's exit status not captured\n");
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return TEST_FAIL;
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}
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return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
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TEST_PASS;
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}
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return TEST_PASS;
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}
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int main(int argc, char *argv[])
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{
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return test_harness(ptrace_gpr, "ptrace_gpr");
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}
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