tqcq/kernel
1
0
Fork 0
Code Issues Pull Requests Actions Projects Releases Wiki Activity
e5480701d3
kernel/tools/testing/selftests/powerpc/ptrace/ptrace.h
tqcq e5480701d3 init repo.
2024-07-22 17:22:30 +08:00

746 lines
14 KiB
C
Raw Blame History

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Ptrace interface test helper functions
*
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
*/
#include <inttypes.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#include <errno.h>
#include <time.h>
#include <sys/ptrace.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/signal.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/user.h>
#include <linux/elf.h>
#include <linux/types.h>
#include <linux/auxvec.h>
#include "reg.h"
#include "utils.h"
#define TEST_PASS 0
#define TEST_FAIL 1
struct fpr_regs {
unsigned long fpr[32];
unsigned long fpscr;
};
struct tm_spr_regs {
unsigned long tm_tfhar;
unsigned long tm_texasr;
unsigned long tm_tfiar;
};
#ifndef NT_PPC_TAR
#define NT_PPC_TAR 0x103
#define NT_PPC_PPR 0x104
#define NT_PPC_DSCR 0x105
#define NT_PPC_EBB 0x106
#define NT_PPC_PMU 0x107
#define NT_PPC_TM_CGPR 0x108
#define NT_PPC_TM_CFPR 0x109
#define NT_PPC_TM_CVMX 0x10a
#define NT_PPC_TM_CVSX 0x10b
#define NT_PPC_TM_SPR 0x10c
#define NT_PPC_TM_CTAR 0x10d
#define NT_PPC_TM_CPPR 0x10e
#define NT_PPC_TM_CDSCR 0x10f
#endif
/* Basic ptrace operations */
int start_trace(pid_t child)
{
int ret;
ret = ptrace(PTRACE_ATTACH, child, NULL, NULL);
if (ret) {
perror("ptrace(PTRACE_ATTACH) failed");
return TEST_FAIL;
}
ret = waitpid(child, NULL, 0);
if (ret != child) {
perror("waitpid() failed");
return TEST_FAIL;
}
return TEST_PASS;
}
int stop_trace(pid_t child)
{
int ret;
ret = ptrace(PTRACE_DETACH, child, NULL, NULL);
if (ret) {
perror("ptrace(PTRACE_DETACH) failed");
return TEST_FAIL;
}
return TEST_PASS;
}
int cont_trace(pid_t child)
{
int ret;
ret = ptrace(PTRACE_CONT, child, NULL, NULL);
if (ret) {
perror("ptrace(PTRACE_CONT) failed");
return TEST_FAIL;
}
return TEST_PASS;
}
int ptrace_read_regs(pid_t child, unsigned long type, unsigned long regs[],
int n)
{
struct iovec iov;
long ret;
FAIL_IF(start_trace(child));
iov.iov_base = regs;
iov.iov_len = n * sizeof(unsigned long);
ret = ptrace(PTRACE_GETREGSET, child, type, &iov);
if (ret)
return ret;
FAIL_IF(stop_trace(child));
return TEST_PASS;
}
long ptrace_write_regs(pid_t child, unsigned long type, unsigned long regs[],
int n)
{
struct iovec iov;
long ret;
FAIL_IF(start_trace(child));
iov.iov_base = regs;
iov.iov_len = n * sizeof(unsigned long);
ret = ptrace(PTRACE_SETREGSET, child, type, &iov);
FAIL_IF(stop_trace(child));
return ret;
}
/* TAR, PPR, DSCR */
int show_tar_registers(pid_t child, unsigned long *out)
{
struct iovec iov;
unsigned long *reg;
int ret;
reg = malloc(sizeof(unsigned long));
if (!reg) {
perror("malloc() failed");
return TEST_FAIL;
}
iov.iov_base = (u64 *) reg;
iov.iov_len = sizeof(unsigned long);
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TAR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
if (out)
out[0] = *reg;
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_PPR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
if (out)
out[1] = *reg;
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_DSCR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
if (out)
out[2] = *reg;
free(reg);
return TEST_PASS;
fail:
free(reg);
return TEST_FAIL;
}
int write_tar_registers(pid_t child, unsigned long tar,
unsigned long ppr, unsigned long dscr)
{
struct iovec iov;
unsigned long *reg;
int ret;
reg = malloc(sizeof(unsigned long));
if (!reg) {
perror("malloc() failed");
return TEST_FAIL;
}
iov.iov_base = (u64 *) reg;
iov.iov_len = sizeof(unsigned long);
*reg = tar;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TAR, &iov);
if (ret) {
perror("ptrace(PTRACE_SETREGSET) failed");
goto fail;
}
*reg = ppr;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_PPR, &iov);
if (ret) {
perror("ptrace(PTRACE_SETREGSET) failed");
goto fail;
}
*reg = dscr;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_DSCR, &iov);
if (ret) {
perror("ptrace(PTRACE_SETREGSET) failed");
goto fail;
}
free(reg);
return TEST_PASS;
fail:
free(reg);
return TEST_FAIL;
}
int show_tm_checkpointed_state(pid_t child, unsigned long *out)
{
struct iovec iov;
unsigned long *reg;
int ret;
reg = malloc(sizeof(unsigned long));
if (!reg) {
perror("malloc() failed");
return TEST_FAIL;
}
iov.iov_base = (u64 *) reg;
iov.iov_len = sizeof(unsigned long);
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CTAR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
if (out)
out[0] = *reg;
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CPPR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
if (out)
out[1] = *reg;
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CDSCR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
if (out)
out[2] = *reg;
free(reg);
return TEST_PASS;
fail:
free(reg);
return TEST_FAIL;
}
int write_ckpt_tar_registers(pid_t child, unsigned long tar,
unsigned long ppr, unsigned long dscr)
{
struct iovec iov;
unsigned long *reg;
int ret;
reg = malloc(sizeof(unsigned long));
if (!reg) {
perror("malloc() failed");
return TEST_FAIL;
}
iov.iov_base = (u64 *) reg;
iov.iov_len = sizeof(unsigned long);
*reg = tar;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CTAR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
*reg = ppr;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CPPR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
*reg = dscr;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CDSCR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
goto fail;
}
free(reg);
return TEST_PASS;
fail:
free(reg);
return TEST_FAIL;
}
/* FPR */
int show_fpr(pid_t child, unsigned long *fpr)
{
struct fpr_regs *regs;
int ret, i;
regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
ret = ptrace(PTRACE_GETFPREGS, child, NULL, regs);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
if (fpr) {
for (i = 0; i < 32; i++)
fpr[i] = regs->fpr[i];
}
return TEST_PASS;
}
int write_fpr(pid_t child, unsigned long val)
{
struct fpr_regs *regs;
int ret, i;
regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
ret = ptrace(PTRACE_GETFPREGS, child, NULL, regs);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
for (i = 0; i < 32; i++)
regs->fpr[i] = val;
ret = ptrace(PTRACE_SETFPREGS, child, NULL, regs);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
return TEST_PASS;
}
int show_ckpt_fpr(pid_t child, unsigned long *fpr)
{
struct fpr_regs *regs;
struct iovec iov;
int ret, i;
regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
iov.iov_base = regs;
iov.iov_len = sizeof(struct fpr_regs);
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CFPR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
if (fpr) {
for (i = 0; i < 32; i++)
fpr[i] = regs->fpr[i];
}
return TEST_PASS;
}
int write_ckpt_fpr(pid_t child, unsigned long val)
{
struct fpr_regs *regs;
struct iovec iov;
int ret, i;
regs = (struct fpr_regs *) malloc(sizeof(struct fpr_regs));
iov.iov_base = regs;
iov.iov_len = sizeof(struct fpr_regs);
ret = ptrace(PTRACE_GETREGSET, child, NT_PPC_TM_CFPR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
for (i = 0; i < 32; i++)
regs->fpr[i] = val;
ret = ptrace(PTRACE_SETREGSET, child, NT_PPC_TM_CFPR, &iov);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
return TEST_PASS;
}
/* GPR */
int show_gpr(pid_t child, unsigned long *gpr)
{
struct pt_regs *regs;
int ret, i;
regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
if (!regs) {
perror("malloc() failed");
return TEST_FAIL;
}
ret = ptrace(PTRACE_GETREGS, child, NULL, regs);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
if (gpr) {
for (i = 14; i < 32; i++)
gpr[i-14] = regs->gpr[i];
}
return TEST_PASS;
}
int write_gpr(pid_t child, unsigned long val)
{
struct pt_regs *regs;
int i, ret;
regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
if (!regs) {
perror("malloc() failed");
return TEST_FAIL;
}
ret = ptrace(PTRACE_GETREGS, child, NULL, regs);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
for (i = 14; i < 32; i++)
regs->gpr[i] = val;
ret = ptrace(PTRACE_SETREGS, child, NULL, regs);
if (ret) {
perror("ptrace(PTRACE_GETREGSET) failed");
return TEST_FAIL;
}
return TEST_PASS;
}
int show_ckpt_gpr(pid_t child, unsigned long *gpr)
{
struct pt_regs *regs;
struct iovec iov;
int ret, i;
regs = (struct pt_regs *) malloc(sizeof(struct pt_regs));
if (!regs) {
perror("malloc() failed");
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;
}
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)
{
unsigned long ret;
asm volatile("mfspr %0,%1" : "=r" (ret) : "i" (SPRN_TFIAR));
return ret;
}
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);
void store_fpr(float *addr);
Reference in New Issue View Git Blame Copy Permalink