156 lines
3.0 KiB
C
156 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Ptrace test for GPR/FPR registers in TM context
|
|
*
|
|
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
|
|
*/
|
|
#include "ptrace.h"
|
|
#include "ptrace-gpr.h"
|
|
#include "tm.h"
|
|
|
|
/* Tracer and Tracee Shared Data */
|
|
int shm_id;
|
|
unsigned long *cptr, *pptr;
|
|
|
|
float a = FPR_1;
|
|
float b = FPR_2;
|
|
float c = FPR_3;
|
|
|
|
void tm_gpr(void)
|
|
{
|
|
unsigned long gpr_buf[18];
|
|
unsigned long result, texasr;
|
|
float fpr_buf[32];
|
|
|
|
printf("Starting the child\n");
|
|
cptr = (unsigned long *)shmat(shm_id, NULL, 0);
|
|
|
|
trans:
|
|
cptr[1] = 0;
|
|
asm __volatile__(
|
|
ASM_LOAD_GPR_IMMED(gpr_1)
|
|
ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
|
|
"1: ;"
|
|
"tbegin.;"
|
|
"beq 2f;"
|
|
ASM_LOAD_GPR_IMMED(gpr_2)
|
|
ASM_LOAD_FPR_SINGLE_PRECISION(flt_2)
|
|
"tsuspend.;"
|
|
"li 7, 1;"
|
|
"stw 7, 0(%[cptr1]);"
|
|
"tresume.;"
|
|
"b .;"
|
|
|
|
"tend.;"
|
|
"li 0, 0;"
|
|
"ori %[res], 0, 0;"
|
|
"b 3f;"
|
|
|
|
/* Transaction abort handler */
|
|
"2: ;"
|
|
"li 0, 1;"
|
|
"ori %[res], 0, 0;"
|
|
"mfspr %[texasr], %[sprn_texasr];"
|
|
|
|
"3: ;"
|
|
: [res] "=r" (result), [texasr] "=r" (texasr)
|
|
: [gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2),
|
|
[sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "b" (&a),
|
|
[flt_2] "b" (&b), [cptr1] "b" (&cptr[1])
|
|
: "memory", "r0", "r7", "r8", "r9", "r10",
|
|
"r11", "r12", "r13", "r14", "r15", "r16",
|
|
"r17", "r18", "r19", "r20", "r21", "r22",
|
|
"r23", "r24", "r25", "r26", "r27", "r28",
|
|
"r29", "r30", "r31"
|
|
);
|
|
|
|
if (result) {
|
|
if (!cptr[0])
|
|
goto trans;
|
|
|
|
shmdt((void *)cptr);
|
|
store_gpr(gpr_buf);
|
|
store_fpr_single_precision(fpr_buf);
|
|
|
|
if (validate_gpr(gpr_buf, GPR_3))
|
|
exit(1);
|
|
|
|
if (validate_fpr_float(fpr_buf, c))
|
|
exit(1);
|
|
|
|
exit(0);
|
|
}
|
|
shmdt((void *)cptr);
|
|
exit(1);
|
|
}
|
|
|
|
int trace_tm_gpr(pid_t child)
|
|
{
|
|
unsigned long gpr[18];
|
|
unsigned long fpr[32];
|
|
|
|
FAIL_IF(start_trace(child));
|
|
FAIL_IF(show_gpr(child, gpr));
|
|
FAIL_IF(validate_gpr(gpr, GPR_2));
|
|
FAIL_IF(show_fpr(child, fpr));
|
|
FAIL_IF(validate_fpr(fpr, FPR_2_REP));
|
|
FAIL_IF(show_ckpt_fpr(child, fpr));
|
|
FAIL_IF(validate_fpr(fpr, FPR_1_REP));
|
|
FAIL_IF(show_ckpt_gpr(child, gpr));
|
|
FAIL_IF(validate_gpr(gpr, GPR_1));
|
|
FAIL_IF(write_ckpt_gpr(child, GPR_3));
|
|
FAIL_IF(write_ckpt_fpr(child, FPR_3_REP));
|
|
|
|
pptr[0] = 1;
|
|
FAIL_IF(stop_trace(child));
|
|
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int ptrace_tm_gpr(void)
|
|
{
|
|
pid_t pid;
|
|
int ret, status;
|
|
|
|
SKIP_IF(!have_htm());
|
|
SKIP_IF(htm_is_synthetic());
|
|
shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT);
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
perror("fork() failed");
|
|
return TEST_FAIL;
|
|
}
|
|
if (pid == 0)
|
|
tm_gpr();
|
|
|
|
if (pid) {
|
|
pptr = (unsigned long *)shmat(shm_id, NULL, 0);
|
|
|
|
while (!pptr[1])
|
|
asm volatile("" : : : "memory");
|
|
ret = trace_tm_gpr(pid);
|
|
if (ret) {
|
|
kill(pid, SIGTERM);
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
shmdt((void *)pptr);
|
|
|
|
ret = wait(&status);
|
|
shmctl(shm_id, IPC_RMID, NULL);
|
|
if (ret != pid) {
|
|
printf("Child's exit status not captured\n");
|
|
return TEST_FAIL;
|
|
}
|
|
|
|
return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
|
|
TEST_PASS;
|
|
}
|
|
return TEST_PASS;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
return test_harness(ptrace_tm_gpr, "ptrace_tm_gpr");
|
|
}
|