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-rw-r--r--tools/testing/selftests/powerpc/ptrace/ptrace.h79
1 files changed, 73 insertions, 6 deletions
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace.h b/tools/testing/selftests/powerpc/ptrace/ptrace.h
index 5181ad9b4b6c..4e0233c0f2b3 100644
--- a/tools/testing/selftests/powerpc/ptrace/ptrace.h
+++ b/tools/testing/selftests/powerpc/ptrace/ptrace.h
@@ -4,6 +4,9 @@
*
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
*/
+
+#define __SANE_USERSPACE_TYPES__
+
#include <inttypes.h>
#include <unistd.h>
#include <stdlib.h>
@@ -20,6 +23,7 @@
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/user.h>
+#include <sys/syscall.h>
#include <linux/elf.h>
#include <linux/types.h>
#include <linux/auxvec.h>
@@ -30,8 +34,8 @@
#define TEST_FAIL 1
struct fpr_regs {
- unsigned long fpr[32];
- unsigned long fpscr;
+ __u64 fpr[32];
+ __u64 fpscr;
};
struct tm_spr_regs {
@@ -318,7 +322,7 @@ fail:
}
/* FPR */
-int show_fpr(pid_t child, unsigned long *fpr)
+int show_fpr(pid_t child, __u64 *fpr)
{
struct fpr_regs *regs;
int ret, i;
@@ -337,7 +341,7 @@ int show_fpr(pid_t child, unsigned long *fpr)
return TEST_PASS;
}
-int write_fpr(pid_t child, unsigned long val)
+int write_fpr(pid_t child, __u64 val)
{
struct fpr_regs *regs;
int ret, i;
@@ -360,7 +364,7 @@ int write_fpr(pid_t child, unsigned long val)
return TEST_PASS;
}
-int show_ckpt_fpr(pid_t child, unsigned long *fpr)
+int show_ckpt_fpr(pid_t child, __u64 *fpr)
{
struct fpr_regs *regs;
struct iovec iov;
@@ -437,6 +441,70 @@ int show_gpr(pid_t child, unsigned long *gpr)
return TEST_PASS;
}
+long sys_ptrace(enum __ptrace_request request, pid_t pid, unsigned long addr, unsigned long data)
+{
+ return syscall(__NR_ptrace, request, pid, (void *)addr, data);
+}
+
+// 33 because of FPSCR
+#define PT_NUM_FPRS (33 * (sizeof(__u64) / sizeof(unsigned long)))
+
+__u64 *peek_fprs(pid_t child)
+{
+ unsigned long *fprs, *p, addr;
+ long ret;
+ int i;
+
+ fprs = malloc(sizeof(unsigned long) * PT_NUM_FPRS);
+ if (!fprs) {
+ perror("malloc() failed");
+ return NULL;
+ }
+
+ for (i = 0, p = fprs; i < PT_NUM_FPRS; i++, p++) {
+ addr = sizeof(unsigned long) * (PT_FPR0 + i);
+ ret = sys_ptrace(PTRACE_PEEKUSER, child, addr, (unsigned long)p);
+ if (ret) {
+ perror("ptrace(PTRACE_PEEKUSR) failed");
+ return NULL;
+ }
+ }
+
+ addr = sizeof(unsigned long) * (PT_FPR0 + i);
+ ret = sys_ptrace(PTRACE_PEEKUSER, child, addr, (unsigned long)&addr);
+ if (!ret) {
+ printf("ptrace(PTRACE_PEEKUSR) succeeded unexpectedly!\n");
+ return NULL;
+ }
+
+ return (__u64 *)fprs;
+}
+
+int poke_fprs(pid_t child, unsigned long *fprs)
+{
+ unsigned long *p, addr;
+ long ret;
+ int i;
+
+ for (i = 0, p = fprs; i < PT_NUM_FPRS; i++, p++) {
+ addr = sizeof(unsigned long) * (PT_FPR0 + i);
+ ret = sys_ptrace(PTRACE_POKEUSER, child, addr, *p);
+ if (ret) {
+ perror("ptrace(PTRACE_POKEUSR) failed");
+ return -1;
+ }
+ }
+
+ addr = sizeof(unsigned long) * (PT_FPR0 + i);
+ ret = sys_ptrace(PTRACE_POKEUSER, child, addr, addr);
+ if (!ret) {
+ printf("ptrace(PTRACE_POKEUSR) succeeded unexpectedly!\n");
+ return -1;
+ }
+
+ return 0;
+}
+
int write_gpr(pid_t child, unsigned long val)
{
struct pt_regs *regs;
@@ -742,4 +810,3 @@ void analyse_texasr(unsigned long texasr)
}
void store_gpr(unsigned long *addr);
-void store_fpr(float *addr);