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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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