810 lines
15 KiB
C
810 lines
15 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Ptrace interface test helper functions
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*
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* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
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*/
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#define __SANE_USERSPACE_TYPES__
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#include <inttypes.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <malloc.h>
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#include <errno.h>
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#include <time.h>
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#include <sys/ptrace.h>
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#include <sys/ioctl.h>
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#include <sys/uio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/signal.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/user.h>
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#include <sys/syscall.h>
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#include <linux/elf.h>
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#include <linux/types.h>
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#include <linux/auxvec.h>
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#include "reg.h"
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#include "utils.h"
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#define TEST_PASS 0
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#define TEST_FAIL 1
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struct fpr_regs {
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__u64 fpr[32];
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__u64 fpscr;
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};
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struct tm_spr_regs {
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unsigned long tm_tfhar;
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unsigned long tm_texasr;
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unsigned long tm_tfiar;
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};
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#ifndef NT_PPC_TAR
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#define NT_PPC_TAR 0x103
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#define NT_PPC_PPR 0x104
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#define NT_PPC_DSCR 0x105
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#define NT_PPC_EBB 0x106
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#define NT_PPC_PMU 0x107
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#define NT_PPC_TM_CGPR 0x108
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#define NT_PPC_TM_CFPR 0x109
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#define NT_PPC_TM_CVMX 0x10a
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#define NT_PPC_TM_CVSX 0x10b
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#define NT_PPC_TM_SPR 0x10c
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#define NT_PPC_TM_CTAR 0x10d
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#define NT_PPC_TM_CPPR 0x10e
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#define NT_PPC_TM_CDSCR 0x10f
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#endif
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/* Basic ptrace operations */
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int start_trace(pid_t child)
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{
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int ret;
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ret = ptrace(PTRACE_ATTACH, child, NULL, NULL);
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if (ret) {
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perror("ptrace(PTRACE_ATTACH) failed");
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return TEST_FAIL;
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}
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ret = waitpid(child, NULL, 0);
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if (ret != child) {
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perror("waitpid() failed");
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return TEST_FAIL;
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}
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return TEST_PASS;
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}
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int stop_trace(pid_t child)
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{
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int ret;
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ret = ptrace(PTRACE_DETACH, child, NULL, NULL);
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if (ret) {
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perror("ptrace(PTRACE_DETACH) failed");
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return TEST_FAIL;
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}
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return TEST_PASS;
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}
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int cont_trace(pid_t child)
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{
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int ret;
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ret = ptrace(PTRACE_CONT, child, NULL, NULL);
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if (ret) {
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perror("ptrace(PTRACE_CONT) failed");
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return TEST_FAIL;
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}
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return TEST_PASS;
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}
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int ptrace_read_regs(pid_t child, unsigned long type, unsigned long regs[],
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int n)
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{
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struct iovec iov;
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long ret;
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FAIL_IF(start_trace(child));
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iov.iov_base = regs;
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iov.iov_len = n * sizeof(unsigned long);
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ret = ptrace(PTRACE_GETREGSET, child, type, &iov);
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if (ret)
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return ret;
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FAIL_IF(stop_trace(child));
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return TEST_PASS;
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}
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long ptrace_write_regs(pid_t child, unsigned long type, unsigned long regs[],
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int n)
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{
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struct iovec iov;
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long ret;
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FAIL_IF(start_trace(child));
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iov.iov_base = regs;
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iov.iov_len = n * sizeof(unsigned long);
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ret = ptrace(PTRACE_SETREGSET, child, type, &iov);
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FAIL_IF(stop_trace(child));
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return ret;
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}
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/* TAR, PPR, DSCR */
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int show_tar_registers(pid_t child, unsigned long *out)
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{
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struct iovec iov;
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unsigned long *reg;
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int ret;
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reg = malloc(sizeof(unsigned long));
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if (!reg) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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iov.iov_base = (u64 *) reg;
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iov.iov_len = sizeof(unsigned long);
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TAR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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if (out)
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out[0] = *reg;
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_PPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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if (out)
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out[1] = *reg;
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_DSCR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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if (out)
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out[2] = *reg;
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free(reg);
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return TEST_PASS;
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fail:
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free(reg);
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return TEST_FAIL;
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}
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int write_tar_registers(pid_t child, unsigned long tar,
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unsigned long ppr, unsigned long dscr)
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{
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struct iovec iov;
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unsigned long *reg;
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int ret;
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reg = malloc(sizeof(unsigned long));
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if (!reg) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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iov.iov_base = (u64 *) reg;
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iov.iov_len = sizeof(unsigned long);
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*reg = tar;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TAR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_SETREGSET) failed");
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goto fail;
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}
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*reg = ppr;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_PPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_SETREGSET) failed");
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goto fail;
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}
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*reg = dscr;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_DSCR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_SETREGSET) failed");
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goto fail;
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}
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free(reg);
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return TEST_PASS;
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fail:
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free(reg);
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return TEST_FAIL;
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}
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int show_tm_checkpointed_state(pid_t child, unsigned long *out)
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{
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struct iovec iov;
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unsigned long *reg;
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int ret;
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reg = malloc(sizeof(unsigned long));
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if (!reg) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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iov.iov_base = (u64 *) reg;
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iov.iov_len = sizeof(unsigned long);
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CTAR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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if (out)
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out[0] = *reg;
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CPPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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if (out)
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out[1] = *reg;
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CDSCR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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if (out)
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out[2] = *reg;
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free(reg);
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return TEST_PASS;
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fail:
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free(reg);
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return TEST_FAIL;
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}
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int write_ckpt_tar_registers(pid_t child, unsigned long tar,
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unsigned long ppr, unsigned long dscr)
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{
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struct iovec iov;
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unsigned long *reg;
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int ret;
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reg = malloc(sizeof(unsigned long));
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if (!reg) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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iov.iov_base = (u64 *) reg;
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iov.iov_len = sizeof(unsigned long);
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*reg = tar;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CTAR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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*reg = ppr;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CPPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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*reg = dscr;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CDSCR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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goto fail;
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}
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free(reg);
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return TEST_PASS;
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fail:
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free(reg);
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return TEST_FAIL;
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}
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/* FPR */
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int show_fpr(pid_t child, __u64 *fpr)
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{
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struct fpr_regs *regs;
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int ret, i;
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regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
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ret = ptrace(PTRACE_GETFPREGS, child, NULL, regs);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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if (fpr) {
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for (i = 0; i < 32; i++)
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fpr[i] = regs->fpr[i];
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}
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return TEST_PASS;
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}
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int write_fpr(pid_t child, __u64 val)
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{
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struct fpr_regs *regs;
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int ret, i;
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regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
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ret = ptrace(PTRACE_GETFPREGS, child, NULL, regs);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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for (i = 0; i < 32; i++)
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regs->fpr[i] = val;
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ret = ptrace(PTRACE_SETFPREGS, child, NULL, regs);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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return TEST_PASS;
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}
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int show_ckpt_fpr(pid_t child, __u64 *fpr)
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{
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struct fpr_regs *regs;
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struct iovec iov;
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int ret, i;
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regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
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iov.iov_base = regs;
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iov.iov_len = sizeof(struct fpr_regs);
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CFPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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if (fpr) {
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for (i = 0; i < 32; i++)
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fpr[i] = regs->fpr[i];
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}
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return TEST_PASS;
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}
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int write_ckpt_fpr(pid_t child, unsigned long val)
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{
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struct fpr_regs *regs;
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struct iovec iov;
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int ret, i;
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regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
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iov.iov_base = regs;
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iov.iov_len = sizeof(struct fpr_regs);
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CFPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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for (i = 0; i < 32; i++)
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regs->fpr[i] = val;
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ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CFPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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return TEST_PASS;
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}
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/* GPR */
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int show_gpr(pid_t child, unsigned long *gpr)
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{
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struct pt_regs *regs;
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int ret, i;
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regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
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if (!regs) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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ret = ptrace(PTRACE_GETREGS, child, NULL, regs);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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if (gpr) {
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for (i = 14; i < 32; i++)
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gpr[i-14] = regs->gpr[i];
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}
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return TEST_PASS;
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}
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long sys_ptrace(enum __ptrace_request request, pid_t pid, unsigned long addr, unsigned long data)
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{
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return syscall(__NR_ptrace, request, pid, (void *)addr, data);
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}
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// 33 because of FPSCR
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#define PT_NUM_FPRS (33 * (sizeof(__u64) / sizeof(unsigned long)))
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__u64 *peek_fprs(pid_t child)
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{
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unsigned long *fprs, *p, addr;
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long ret;
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int i;
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fprs = malloc(sizeof(unsigned long) * PT_NUM_FPRS);
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if (!fprs) {
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perror("malloc() failed");
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return NULL;
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}
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for (i = 0, p = fprs; i < PT_NUM_FPRS; i++, p++) {
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addr = sizeof(unsigned long) * (PT_FPR0 + i);
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ret = sys_ptrace(PTRACE_PEEKUSER, child, addr, (unsigned long)p);
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if (ret) {
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perror("ptrace(PTRACE_PEEKUSR) failed");
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return NULL;
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}
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}
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addr = sizeof(unsigned long) * (PT_FPR0 + i);
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ret = sys_ptrace(PTRACE_PEEKUSER, child, addr, (unsigned long)&addr);
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if (!ret) {
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printf("ptrace(PTRACE_PEEKUSR) succeeded unexpectedly!\n");
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return NULL;
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}
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return (__u64 *)fprs;
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}
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int poke_fprs(pid_t child, unsigned long *fprs)
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{
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unsigned long *p, addr;
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long ret;
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int i;
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for (i = 0, p = fprs; i < PT_NUM_FPRS; i++, p++) {
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addr = sizeof(unsigned long) * (PT_FPR0 + i);
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ret = sys_ptrace(PTRACE_POKEUSER, child, addr, *p);
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if (ret) {
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perror("ptrace(PTRACE_POKEUSR) failed");
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return -1;
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}
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}
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addr = sizeof(unsigned long) * (PT_FPR0 + i);
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ret = sys_ptrace(PTRACE_POKEUSER, child, addr, addr);
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if (!ret) {
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printf("ptrace(PTRACE_POKEUSR) succeeded unexpectedly!\n");
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return -1;
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}
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return 0;
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}
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int write_gpr(pid_t child, unsigned long val)
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{
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struct pt_regs *regs;
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int i, ret;
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regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
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if (!regs) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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ret = ptrace(PTRACE_GETREGS, child, NULL, regs);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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for (i = 14; i < 32; i++)
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regs->gpr[i] = val;
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ret = ptrace(PTRACE_SETREGS, child, NULL, regs);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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return TEST_PASS;
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}
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int show_ckpt_gpr(pid_t child, unsigned long *gpr)
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{
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struct pt_regs *regs;
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struct iovec iov;
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int ret, i;
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regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
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if (!regs) {
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perror("malloc() failed");
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return TEST_FAIL;
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}
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iov.iov_base = (u64 *) regs;
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iov.iov_len = sizeof(struct pt_regs);
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ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CGPR, &iov);
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if (ret) {
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perror("ptrace(PTRACE_GETREGSET) failed");
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return TEST_FAIL;
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}
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|
if (gpr) {
|
|
for (i = 14; i < 32; i++)
|
|
gpr[i-14] = regs->gpr[i];
|
|
}
|
|
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int write_ckpt_gpr(pid_t child, unsigned long val)
|
|
{
|
|
struct pt_regs *regs;
|
|
struct iovec iov;
|
|
int ret, i;
|
|
|
|
regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
|
|
if (!regs) {
|
|
perror("malloc() failed\n");
|
|
return TEST_FAIL;
|
|
}
|
|
iov.iov_base = (u64 *) regs;
|
|
iov.iov_len = sizeof(struct pt_regs);
|
|
|
|
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CGPR, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETREGSET) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
for (i = 14; i < 32; i++)
|
|
regs->gpr[i] = val;
|
|
|
|
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CGPR, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETREGSET) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
/* VMX */
|
|
int show_vmx(pid_t child, unsigned long vmx[][2])
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_GETVRREGS, child, 0, vmx);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETVRREGS) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int show_vmx_ckpt(pid_t child, unsigned long vmx[][2])
|
|
{
|
|
unsigned long regs[34][2];
|
|
struct iovec iov;
|
|
int ret;
|
|
|
|
iov.iov_base = (u64 *) regs;
|
|
iov.iov_len = sizeof(regs);
|
|
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CVMX, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETREGSET, NT_PPC_TM_CVMX) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
memcpy(vmx, regs, sizeof(regs));
|
|
return TEST_PASS;
|
|
}
|
|
|
|
|
|
int write_vmx(pid_t child, unsigned long vmx[][2])
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_SETVRREGS, child, 0, vmx);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_SETVRREGS) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int write_vmx_ckpt(pid_t child, unsigned long vmx[][2])
|
|
{
|
|
unsigned long regs[34][2];
|
|
struct iovec iov;
|
|
int ret;
|
|
|
|
memcpy(regs, vmx, sizeof(regs));
|
|
iov.iov_base = (u64 *) regs;
|
|
iov.iov_len = sizeof(regs);
|
|
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CVMX, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_SETREGSET, NT_PPC_TM_CVMX) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
/* VSX */
|
|
int show_vsx(pid_t child, unsigned long *vsx)
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_GETVSRREGS, child, 0, vsx);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETVSRREGS) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int show_vsx_ckpt(pid_t child, unsigned long *vsx)
|
|
{
|
|
unsigned long regs[32];
|
|
struct iovec iov;
|
|
int ret;
|
|
|
|
iov.iov_base = (u64 *) regs;
|
|
iov.iov_len = sizeof(regs);
|
|
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CVSX, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETREGSET, NT_PPC_TM_CVSX) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
memcpy(vsx, regs, sizeof(regs));
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int write_vsx(pid_t child, unsigned long *vsx)
|
|
{
|
|
int ret;
|
|
|
|
ret = ptrace(PTRACE_SETVSRREGS, child, 0, vsx);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_SETVSRREGS) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int write_vsx_ckpt(pid_t child, unsigned long *vsx)
|
|
{
|
|
unsigned long regs[32];
|
|
struct iovec iov;
|
|
int ret;
|
|
|
|
memcpy(regs, vsx, sizeof(regs));
|
|
iov.iov_base = (u64 *) regs;
|
|
iov.iov_len = sizeof(regs);
|
|
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CVSX, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_SETREGSET, NT_PPC_TM_CVSX) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
/* TM SPR */
|
|
int show_tm_spr(pid_t child, struct tm_spr_regs *out)
|
|
{
|
|
struct tm_spr_regs *regs;
|
|
struct iovec iov;
|
|
int ret;
|
|
|
|
regs = (struct tm_spr_regs *) malloc(sizeof(struct tm_spr_regs));
|
|
if (!regs) {
|
|
perror("malloc() failed");
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
iov.iov_base = (u64 *) regs;
|
|
iov.iov_len = sizeof(struct tm_spr_regs);
|
|
|
|
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_SPR, &iov);
|
|
if (ret) {
|
|
perror("ptrace(PTRACE_GETREGSET) failed");
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
if (out)
|
|
memcpy(out, regs, sizeof(struct tm_spr_regs));
|
|
|
|
return TEST_PASS;
|
|
}
|
|
|
|
|
|
|
|
/* Analyse TEXASR after TM failure */
|
|
inline unsigned long get_tfiar(void)
|
|
{
|
|
return mfspr(SPRN_TFIAR);
|
|
}
|
|
|
|
void analyse_texasr(unsigned long texasr)
|
|
{
|
|
printf("TEXASR: %16lx\t", texasr);
|
|
|
|
if (texasr & TEXASR_FP)
|
|
printf("TEXASR_FP ");
|
|
|
|
if (texasr & TEXASR_DA)
|
|
printf("TEXASR_DA ");
|
|
|
|
if (texasr & TEXASR_NO)
|
|
printf("TEXASR_NO ");
|
|
|
|
if (texasr & TEXASR_FO)
|
|
printf("TEXASR_FO ");
|
|
|
|
if (texasr & TEXASR_SIC)
|
|
printf("TEXASR_SIC ");
|
|
|
|
if (texasr & TEXASR_NTC)
|
|
printf("TEXASR_NTC ");
|
|
|
|
if (texasr & TEXASR_TC)
|
|
printf("TEXASR_TC ");
|
|
|
|
if (texasr & TEXASR_TIC)
|
|
printf("TEXASR_TIC ");
|
|
|
|
if (texasr & TEXASR_IC)
|
|
printf("TEXASR_IC ");
|
|
|
|
if (texasr & TEXASR_IFC)
|
|
printf("TEXASR_IFC ");
|
|
|
|
if (texasr & TEXASR_ABT)
|
|
printf("TEXASR_ABT ");
|
|
|
|
if (texasr & TEXASR_SPD)
|
|
printf("TEXASR_SPD ");
|
|
|
|
if (texasr & TEXASR_HV)
|
|
printf("TEXASR_HV ");
|
|
|
|
if (texasr & TEXASR_PR)
|
|
printf("TEXASR_PR ");
|
|
|
|
if (texasr & TEXASR_FS)
|
|
printf("TEXASR_FS ");
|
|
|
|
if (texasr & TEXASR_TE)
|
|
printf("TEXASR_TE ");
|
|
|
|
if (texasr & TEXASR_ROT)
|
|
printf("TEXASR_ROT ");
|
|
|
|
printf("TFIAR :%lx\n", get_tfiar());
|
|
}
|
|
|
|
void store_gpr(unsigned long *addr);
|